melib: bundle stalwartlabs/sieve into melib

We can't use it as a dependency because it uses external code for mail
parsing etc, which would be duplication of functionality since melib
does that already.

Signed-off-by: Manos Pitsidianakis <manos@pitsidianak.is>
feature/sieve
Manos Pitsidianakis 8 months ago
parent 7eed82783a
commit 6ead906b93
No known key found for this signature in database
GPG Key ID: 7729C7707F7E09D0

131
Cargo.lock generated

@ -24,6 +24,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2c99f64d1e06488f620f932677e24bc6e2897582980441ae90a671415bd7ec2f"
dependencies = [
"cfg-if 1.0.0",
"getrandom",
"once_cell",
"version_check",
]
@ -226,6 +227,30 @@ dependencies = [
"byteorder",
]
[[package]]
name = "bincode"
version = "1.3.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b1f45e9417d87227c7a56d22e471c6206462cba514c7590c09aff4cf6d1ddcad"
dependencies = [
"serde",
]
[[package]]
name = "bit-set"
version = "0.5.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0700ddab506f33b20a03b13996eccd309a48e5ff77d0d95926aa0210fb4e95f1"
dependencies = [
"bit-vec",
]
[[package]]
name = "bit-vec"
version = "0.6.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "349f9b6a179ed607305526ca489b34ad0a41aed5f7980fa90eb03160b69598fb"
[[package]]
name = "bitflags"
version = "1.3.2"
@ -654,6 +679,16 @@ version = "0.1.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7360491ce676a36bf9bb3c56c1aa791658183a54d2744120f27285738d90465a"
[[package]]
name = "fancy-regex"
version = "0.11.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b95f7c0680e4142284cf8b22c14a476e87d61b004a3a0861872b32ef7ead40a2"
dependencies = [
"bit-set",
"regex",
]
[[package]]
name = "fastrand"
version = "1.9.0"
@ -860,6 +895,16 @@ dependencies = [
"slab",
]
[[package]]
name = "gethostname"
version = "0.4.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0176e0459c2e4a1fe232f984bca6890e681076abb9934f6cea7c326f3fc47818"
dependencies = [
"libc",
"windows-targets",
]
[[package]]
name = "getrandom"
version = "0.2.10"
@ -1223,6 +1268,23 @@ dependencies = [
"time",
]
[[package]]
name = "mail-builder"
version = "0.3.1"
source = "git+https://github.com/stalwartlabs/mail-builder#1eb0b5a72211c491cbe338920e8dfd3a675d6653"
dependencies = [
"gethostname",
]
[[package]]
name = "mail-parser"
version = "0.9.0"
source = "git+https://github.com/stalwartlabs/mail-parser#e5a4e65112fd8aa4c527d37b87413d939f1259a1"
dependencies = [
"encoding_rs",
"serde",
]
[[package]]
name = "mailin"
version = "0.6.3"
@ -1300,12 +1362,15 @@ dependencies = [
name = "melib"
version = "0.8.1"
dependencies = [
"ahash",
"async-stream",
"base64 0.13.1",
"bincode",
"bitflags 2.4.0",
"data-encoding",
"encoding",
"encoding_rs",
"fancy-regex",
"flate2",
"futures",
"imap-codec",
@ -1314,11 +1379,14 @@ dependencies = [
"libc",
"libloading",
"log",
"mail-builder",
"mail-parser",
"mailin-embedded",
"native-tls",
"nix",
"nom",
"notify",
"phf",
"polling",
"regex",
"rusqlite",
@ -1653,6 +1721,48 @@ version = "2.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9b2a4787296e9989611394c33f193f676704af1686e70b8f8033ab5ba9a35a94"
[[package]]
name = "phf"
version = "0.11.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ade2d8b8f33c7333b51bcf0428d37e217e9f32192ae4772156f65063b8ce03dc"
dependencies = [
"phf_macros",
"phf_shared",
]
[[package]]
name = "phf_generator"
version = "0.11.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "48e4cc64c2ad9ebe670cb8fd69dd50ae301650392e81c05f9bfcb2d5bdbc24b0"
dependencies = [
"phf_shared",
"rand",
]
[[package]]
name = "phf_macros"
version = "0.11.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3444646e286606587e49f3bcf1679b8cef1dc2c5ecc29ddacaffc305180d464b"
dependencies = [
"phf_generator",
"phf_shared",
"proc-macro2",
"quote",
"syn 2.0.29",
]
[[package]]
name = "phf_shared"
version = "0.11.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "90fcb95eef784c2ac79119d1dd819e162b5da872ce6f3c3abe1e8ca1c082f72b"
dependencies = [
"siphasher",
]
[[package]]
name = "pin-project"
version = "1.1.3"
@ -1758,6 +1868,21 @@ dependencies = [
"proc-macro2",
]
[[package]]
name = "rand"
version = "0.8.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
dependencies = [
"rand_core",
]
[[package]]
name = "rand_core"
version = "0.6.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
[[package]]
name = "redox_syscall"
version = "0.2.16"
@ -2043,6 +2168,12 @@ dependencies = [
"libc",
]
[[package]]
name = "siphasher"
version = "0.3.11"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "38b58827f4464d87d377d175e90bf58eb00fd8716ff0a62f80356b5e61555d0d"
[[package]]
name = "slab"
version = "0.4.9"

@ -50,10 +50,16 @@ serde_path_to_error = { version = "0.1" }
smallvec = { version = "^1.5.0", features = ["serde"] }
smol = "1.0.0"
socket2 = { version = "0.4", features = [] }
unicode-segmentation = { version = "1.2.1", default-features = false, optional = true }
uuid = { version = "^1", features = ["serde", "v4", "v5"] }
xdg = "2.1.0"
# sieve
mail-parser = { version = "0.9", git = "https://github.com/stalwartlabs/mail-parser", features = ["ludicrous_mode", "full_encoding", "serde_support"] }
mail-builder = { version = "0.3", git = "https://github.com/stalwartlabs/mail-builder", features = ["ludicrous_mode"] }
phf = { version = "0.11", features = ["macros"] }
bincode = "1.3.3"
ahash = { version = "0.8.0" }
fancy-regex = "0.11.0"
[dev-dependencies]
mailin-embedded = { version = "0.7", features = ["rtls"] }

@ -0,0 +1,12 @@
.git1
# Generated by Cargo
# will have compiled files and executables
/target/
# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
Cargo.lock
# These are backup files generated by rustfmt
**/*.rs.bk
*.failed

@ -0,0 +1,17 @@
sieve-rs 0.3.1
================================
- Bump `mail-builder` dependency to 0.3.0.
sieve-rs 0.3.0
================================
- Updated ``execute`` grammar.
- Upgraded to latest mail-parser.
- Envelope accessible from environment variables.
sieve-rs 0.2.0
================================
- Improved event loop.
sieve-rs 0.1.0
================================
- Initial release.

@ -0,0 +1,28 @@
[package]
name = "sieve-rs"
description = "Sieve filter interpreter for Rust"
authors = [ "Stalwart Labs <hello@stalw.art>"]
repository = "https://github.com/stalwartlabs/sieve"
homepage = "https://github.com/stalwartlabs/sieve"
license = "AGPL-3.0-only"
keywords = ["sieve", "interpreter", "compiler", "email", "mail"]
categories = ["email", "compilers"]
readme = "README.md"
version = "0.3.1"
edition = "2021"
[lib]
name = "sieve"
[dependencies]
mail-parser = { version = "0.9", git = "https://github.com/stalwartlabs/mail-parser", features = ["ludicrous_mode", "full_encoding", "serde_support"] }
mail-builder = { version = "0.3", git = "https://github.com/stalwartlabs/mail-builder", features = ["ludicrous_mode"] }
phf = { version = "0.11", features = ["macros"] }
serde = { version = "1.0", features = ["derive"] }
bincode = "1.3.3"
ahash = { version = "0.8.0" }
fancy-regex = "0.11.0"
[dev-dependencies]
serde_json = "1.0"
evalexpr = "11.1.0"

@ -0,0 +1,661 @@
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holder fails to notify you of the violation by some reasonable means
prior to 60 days after the cessation.
Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.
Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License. If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.
9. Acceptance Not Required for Having Copies.
You are not required to accept this License in order to receive or
run a copy of the Program. Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance. However,
nothing other than this License grants you permission to propagate or
modify any covered work. These actions infringe copyright if you do
not accept this License. Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.
10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically
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You may not impose any further restrictions on the exercise of the
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11. Patents.
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work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims
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but do not include claims that would be infringed only as a
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patent sublicenses in a manner consistent with the requirements of
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Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
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propagate the contents of its contributor version.
In the following three paragraphs, a "patent license" is any express
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If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
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then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients. "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
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you grant is automatically extended to all recipients of the covered
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A patent license is "discriminatory" if it does not include within
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contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Remote Network Interaction; Use with the GNU General Public License.
Notwithstanding any other provision of this License, if you modify the
Program, your modified version must prominently offer all users
interacting with it remotely through a computer network (if your version
supports such interaction) an opportunity to receive the Corresponding
Source of your version by providing access to the Corresponding Source
from a network server at no charge, through some standard or customary
means of facilitating copying of software. This Corresponding Source
shall include the Corresponding Source for any work covered by version 3
of the GNU General Public License that is incorporated pursuant to the
following paragraph.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the work with which it is combined will remain governed by version
3 of the GNU General Public License.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU Affero General Public License from time to time. Such new versions
will be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU Affero General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU Affero General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU Affero General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
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WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
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PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer
network, you should also make sure that it provides a way for users to
get its source. For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
of the code. There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the
specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.

@ -0,0 +1,244 @@
# sieve
[![crates.io](https://img.shields.io/crates/v/sieve-rs)](https://crates.io/crates/sieve-rs)
[![build](https://github.com/stalwartlabs/sieve/actions/workflows/rust.yml/badge.svg)](https://github.com/stalwartlabs/sieve/actions/workflows/rust.yml)
[![docs.rs](https://img.shields.io/docsrs/sieve-rs)](https://docs.rs/sieve-rs)
[![License: AGPL v3](https://img.shields.io/badge/License-AGPL_v3-blue.svg)](https://www.gnu.org/licenses/agpl-3.0)
_sieve_ is a fast and secure Sieve filter interpreter for Rust that supports all [registered Sieve extensions](https://www.iana.org/assignments/sieve-extensions/sieve-extensions.xhtml).
## Usage Example
```rust
use sieve::{runtime::RuntimeError, Action, Compiler, Event, Input, Runtime};
// Sieve script to execute
let text_script = br#"
require ["fileinto", "body", "imap4flags"];
if body :contains "tps" {
setflag "$tps_reports";
}
if header :matches "List-ID" "*<*@*" {
fileinto "INBOX.lists.${2}"; stop;
}
"#;
// Message to filter
let raw_message = r#"From: Sales Mailing List <list-sales@example.org>
To: John Doe <jdoe@example.org>
List-ID: <sales@example.org>
Subject: TPS Reports
We're putting new coversheets on all the TPS reports before they go out now.
So if you could go ahead and try to remember to do that from now on, that'd be great. All right!
"#;
// Compile
let compiler = Compiler::new();
let script = compiler.compile(text_script).unwrap();
// Build runtime
let runtime = Runtime::new();
// Create filter instance
let mut instance = runtime.filter(raw_message.as_bytes());
let mut input = Input::script("my-script", script);
let mut messages: Vec<String> = Vec::new();
// Start event loop
while let Some(result) = instance.run(input) {
match result {
Ok(event) => match event {
Event::IncludeScript { name, optional } => {
// NOTE: Just for demonstration purposes, script name needs to be validated first.
if let Ok(bytes) = std::fs::read(name.as_str()) {
let script = compiler.compile(&bytes).unwrap();
input = Input::script(name, script);
} else if optional {
input = Input::False;
} else {
panic!("Script {} not found.", name);
}
}
Event::MailboxExists { .. } => {
// Set to true if the mailbox exists
input = false.into();
}
Event::ListContains { .. } => {
// Set to true if the list(s) contains an entry
input = false.into();
}
Event::DuplicateId { .. } => {
// Set to true if the ID is duplicate
input = false.into();
}
Event::Execute { command, arguments } => {
println!(
"Script executed command {:?} with parameters {:?}",
command, arguments
);
// Set to true if the script succeeded
input = false.into();
}
Event::Keep { flags, message_id } => {
println!(
"Keep message '{}' with flags {:?}.",
if message_id > 0 {
messages[message_id - 1].as_str()
} else {
raw_message
},
flags
);
input = true.into();
}
Event::Discard => {
println!("Discard message.");
input = true.into();
}
Event::Reject { reason, .. } => {
println!("Reject message with reason {:?}.", reason);
input = true.into();
}
Event::FileInto {
folder,
flags,
message_id,
..
} => {
println!(
"File message '{}' in folder {:?} with flags {:?}.",
if message_id > 0 {
messages[message_id - 1].as_str()
} else {
raw_message
},
folder,
flags
);
input = true.into();
}
Event::SendMessage {
recipient,
message_id,
..
} => {
println!(
"Send message '{}' to {:?}.",
if message_id > 0 {
messages[message_id - 1].as_str()
} else {
raw_message
},
recipient
);
input = true.into();
}
Event::Notify {
message, method, ..
} => {
println!("Notify URI {:?} with message {:?}", method, message);
input = true.into();
}
Event::CreatedMessage { message, .. } => {
messages.push(String::from_utf8(message).unwrap());
input = true.into();
}
#[cfg(test)]
_ => unreachable!(),
},
Err(error) => {
match error {
RuntimeError::TooManyIncludes => {
eprintln!("Too many included scripts.");
}
RuntimeError::InvalidInstruction(instruction) => {
eprintln!(
"Invalid instruction {:?} found at {}:{}.",
instruction.name(),
instruction.line_num(),
instruction.line_pos()
);
}
RuntimeError::ScriptErrorMessage(message) => {
eprintln!("Script called the 'error' function with {:?}", message);
}
RuntimeError::CapabilityNotAllowed(capability) => {
eprintln!(
"Capability {:?} has been disabled by the administrator.",
capability
);
}
RuntimeError::CapabilityNotSupported(capability) => {
eprintln!("Capability {:?} not supported.", capability);
}
RuntimeError::CPULimitReached => {
eprintln!("Script exceeded the configured CPU limit.");
}
}
input = true.into();
}
}
}
```
## Testing & Fuzzing
To run the testsuite:
```bash
$ cargo test --all-features
```
To fuzz the library with `cargo-fuzz`:
```bash
$ cargo +nightly fuzz run sieve
```
## Conformed RFCs
- [RFC 5228 - Sieve: An Email Filtering Language](https://datatracker.ietf.org/doc/html/rfc5228)
- [RFC 3894 - Copying Without Side Effects](https://datatracker.ietf.org/doc/html/rfc3894)
- [RFC 5173 - Body Extension](https://datatracker.ietf.org/doc/html/rfc5173)
- [RFC 5183 - Environment Extension](https://datatracker.ietf.org/doc/html/rfc5183)
- [RFC 5229 - Variables Extension](https://datatracker.ietf.org/doc/html/rfc5229)
- [RFC 5230 - Vacation Extension](https://datatracker.ietf.org/doc/html/rfc5230)
- [RFC 5231 - Relational Extension](https://datatracker.ietf.org/doc/html/rfc5231)
- [RFC 5232 - Imap4flags Extension](https://datatracker.ietf.org/doc/html/rfc5232)
- [RFC 5233 - Subaddress Extension](https://datatracker.ietf.org/doc/html/rfc5233)
- [RFC 5235 - Spamtest and Virustest Extensions](https://datatracker.ietf.org/doc/html/rfc5235)
- [RFC 5260 - Date and Index Extensions](https://datatracker.ietf.org/doc/html/rfc5260)
- [RFC 5293 - Editheader Extension](https://datatracker.ietf.org/doc/html/rfc5293)
- [RFC 5429 - Reject and Extended Reject Extensions](https://datatracker.ietf.org/doc/html/rfc5429)
- [RFC 5435 - Extension for Notifications](https://datatracker.ietf.org/doc/html/rfc5435)
- [RFC 5463 - Ihave Extension](https://datatracker.ietf.org/doc/html/rfc5463)
- [RFC 5490 - Extensions for Checking Mailbox Status and Accessing Mailbox Metadata](https://datatracker.ietf.org/doc/html/rfc5490)
- [RFC 5703 - MIME Part Tests, Iteration, Extraction, Replacement, and Enclosure](https://datatracker.ietf.org/doc/html/rfc5703)
- [RFC 6009 - Delivery Status Notifications and Deliver-By Extensions](https://datatracker.ietf.org/doc/html/rfc6009)
- [RFC 6131 - Sieve Vacation Extension: "Seconds" Parameter](https://datatracker.ietf.org/doc/html/rfc6131)
- [RFC 6134 - Externally Stored Lists](https://datatracker.ietf.org/doc/html/rfc6134)
- [RFC 6558 - Converting Messages before Delivery](https://datatracker.ietf.org/doc/html/rfc6558)
- [RFC 6609 - Include Extension](https://datatracker.ietf.org/doc/html/rfc6609)
- [RFC 7352 - Detecting Duplicate Deliveries](https://datatracker.ietf.org/doc/html/rfc7352)
- [RFC 8579 - Delivering to Special-Use Mailboxes](https://datatracker.ietf.org/doc/html/rfc8579)
- [RFC 8580 - File Carbon Copy (FCC)](https://datatracker.ietf.org/doc/html/rfc8580)
- [RFC 9042 - Delivery by MAILBOXID](https://datatracker.ietf.org/doc/html/rfc9042)
- [REGEX-01 - Regular Expression Extension (draft-ietf-sieve-regex-01)](https://www.ietf.org/archive/id/draft-ietf-sieve-regex-01.html)
## License
Licensed under the terms of the [GNU Affero General Public License](https://www.gnu.org/licenses/agpl-3.0.en.html) as published by
the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
See [LICENSE](LICENSE) for more details.
You can be released from the requirements of the AGPLv3 license by purchasing
a commercial license. Please contact licensing@stalw.art for more details.
## Copyright
Copyright (C) 2020-2023, Stalwart Labs Ltd.

@ -0,0 +1,62 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{
instruction::{CompilerState, Instruction},
test::Test,
},
CompileError, Value,
};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct Convert {
pub from_media_type: Value,
pub to_media_type: Value,
pub transcoding_params: Vec<Value>,
pub is_not: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_convert(&mut self) -> Result<Test, CompileError> {
Ok(Test::Convert(Convert {
from_media_type: self.parse_string()?,
to_media_type: self.parse_string()?,
transcoding_params: self.parse_strings(false)?,
is_not: false,
}))
}
pub(crate) fn parse_convert(&mut self) -> Result<(), CompileError> {
let cmd = Instruction::Convert(Convert {
from_media_type: self.parse_string()?,
to_media_type: self.parse_string()?,
transcoding_params: self.parse_strings(false)?,
is_not: false,
});
self.instructions.push(cmd);
Ok(())
}
}

@ -0,0 +1,214 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use mail_parser::HeaderName;
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{
instruction::{CompilerState, Instruction},
Capability, Comparator,
},
lexer::{word::Word, Token},
CompileError, ErrorType, Value,
};
use crate::sieve::compiler::grammar::MatchType;
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct AddHeader {
pub last: bool,
pub field_name: Value,
pub value: Value,
}
/*
Usage: "deleteheader" [":index" <fieldno: number> [":last"]]
[COMPARATOR] [MATCH-TYPE]
<field-name: string>
[<value-patterns: string-list>]
*/
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct DeleteHeader {
pub index: Option<i32>,
pub comparator: Comparator,
pub match_type: MatchType,
pub field_name: Value,
pub value_patterns: Vec<Value>,
pub mime_anychild: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_addheader(&mut self) -> Result<(), CompileError> {
let mut field_name = None;
let value;
let mut last = false;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(Word::Last) => {
self.validate_argument(1, None, token_info.line_num, token_info.line_pos)?;
last = true;
}
_ => {
let string = self.parse_string_token(token_info)?;
if field_name.is_none() {
if let Value::Text(header_name) = &string {
if HeaderName::parse(header_name).is_none() {
return Err(self
.tokens
.unwrap_next()?
.custom(ErrorType::InvalidHeaderName));
}
}
field_name = string.into();
} else {
if matches!(
&string,
Value::Text(value) if value.len() > self.compiler.max_header_size
) {
return Err(self
.tokens
.unwrap_next()?
.custom(ErrorType::HeaderTooLong));
}
value = string;
break;
}
}
}
}
self.instructions.push(Instruction::AddHeader(AddHeader {
last,
field_name: field_name.unwrap(),
value,
}));
Ok(())
}
pub(crate) fn parse_deleteheader(&mut self) -> Result<(), CompileError> {
let field_name: Value;
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut index = None;
let mut index_last = false;
let mut mime = false;
let mut mime_anychild = false;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex),
) => {
self.validate_argument(
1,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
Token::Tag(Word::Index) => {
self.validate_argument(3, None, token_info.line_num, token_info.line_pos)?;
index = (self.tokens.expect_number(u16::MAX as usize)? as i32).into();
}
Token::Tag(Word::Last) => {
self.validate_argument(4, None, token_info.line_num, token_info.line_pos)?;
index_last = true;
}
Token::Tag(Word::Mime) => {
self.validate_argument(
5,
Capability::Mime.into(),
token_info.line_num,
token_info.line_pos,
)?;
mime = true;
}
Token::Tag(Word::AnyChild) => {
self.validate_argument(
6,
Capability::Mime.into(),
token_info.line_num,
token_info.line_pos,
)?;
mime_anychild = true;
}
_ => {
field_name = self.parse_string_token(token_info)?;
if let Value::Text(header_name) = &field_name {
if HeaderName::parse(header_name).is_none() {
return Err(self
.tokens
.unwrap_next()?
.custom(ErrorType::InvalidHeaderName));
}
}
break;
}
}
}
if !mime && mime_anychild {
return Err(self.tokens.unwrap_next()?.missing_tag(":mime"));
}
let cmd = Instruction::DeleteHeader(DeleteHeader {
index: if index_last { index.map(|i| -i) } else { index },
comparator,
match_type,
field_name,
value_patterns: if let Some(Ok(
Token::StringConstant(_) | Token::StringVariable(_) | Token::BracketOpen,
)) = self.tokens.peek().map(|r| r.map(|t| &t.token))
{
let mut key_list = self.parse_strings(false)?;
self.validate_match(&match_type, &mut key_list)?;
key_list
} else {
Vec::new()
},
mime_anychild,
});
self.instructions.push(cmd);
Ok(())
}
}

@ -0,0 +1,119 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{
instruction::{CompilerState, Instruction},
Capability,
},
lexer::{word::Word, Token},
CompileError, Value,
};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct FileInto {
pub copy: bool,
pub create: bool,
pub folder: Value,
pub flags: Vec<Value>,
pub mailbox_id: Option<Value>,
pub special_use: Option<Value>,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_fileinto(&mut self) -> Result<(), CompileError> {
let folder;
let mut copy = false;
let mut create = false;
let mut flags = Vec::new();
let mut mailbox_id = None;
let mut special_use = None;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(Word::Copy) => {
self.validate_argument(
1,
Capability::Copy.into(),
token_info.line_num,
token_info.line_pos,
)?;
copy = true;
}
Token::Tag(Word::Create) => {
self.validate_argument(
2,
Capability::Mailbox.into(),
token_info.line_num,
token_info.line_pos,
)?;
create = true;
}
Token::Tag(Word::Flags) => {
self.validate_argument(
3,
Capability::Imap4Flags.into(),
token_info.line_num,
token_info.line_pos,
)?;
flags = self.parse_strings(false)?;
}
Token::Tag(Word::MailboxId) => {
self.validate_argument(
4,
Capability::Mailbox.into(),
token_info.line_num,
token_info.line_pos,
)?;
mailbox_id = self.parse_string()?.into();
}
Token::Tag(Word::SpecialUse) => {
self.validate_argument(
5,
Capability::SpecialUse.into(),
token_info.line_num,
token_info.line_pos,
)?;
special_use = self.parse_string()?.into();
}
_ => {
folder = self.parse_string_token(token_info)?;
break;
}
}
}
self.instructions.push(Instruction::FileInto(FileInto {
folder,
copy,
create,
flags,
mailbox_id,
special_use,
}));
Ok(())
}
}

@ -0,0 +1,90 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::instruction::{CompilerState, Instruction},
lexer::{word::Word, Token},
CompileError, ErrorType, Value, VariableType,
};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct EditFlags {
pub action: Action,
pub name: Option<VariableType>,
pub flags: Vec<Value>,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum Action {
Set,
Add,
Remove,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_flag_action(&mut self, word: Word) -> Result<(), CompileError> {
let token_info = self.tokens.unwrap_next()?;
let action = match word {
Word::SetFlag => Action::Set,
Word::AddFlag => Action::Add,
Word::RemoveFlag => Action::Remove,
_ => unreachable!(),
};
let instruction = Instruction::EditFlags(
match (
&token_info.token,
self.tokens.peek().map(|r| r.map(|t| &t.token)),
) {
(
Token::StringConstant(_),
Some(Ok(
Token::StringConstant(_) | Token::StringVariable(_) | Token::BracketOpen,
)),
) => EditFlags {
name: self.parse_variable_name(token_info, false)?.into(),
flags: self.parse_strings(false)?,
action,
},
(Token::BracketOpen, _)
| (
Token::StringConstant(_) | Token::StringVariable(_),
Some(Ok(Token::Semicolon)),
) => EditFlags {
name: None,
flags: self.parse_strings_token(token_info)?,
action,
},
_ => {
return Err(token_info.custom(ErrorType::InvalidArguments));
}
},
);
self.instructions.push(instruction);
Ok(())
}
}

@ -0,0 +1,94 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::instruction::{CompilerState, Instruction},
lexer::{word::Word, Token},
CompileError, Value,
};
/*
include [LOCATION] [":once"] [":optional"] <value: string>
LOCATION = ":personal" / ":global"
*/
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct Include {
pub location: Location,
pub once: bool,
pub optional: bool,
pub value: Value,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum Location {
Personal,
Global,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_include(&mut self) -> Result<(), CompileError> {
let value;
let mut once = false;
let mut optional = false;
let mut location = Location::Personal;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(Word::Once) => {
self.validate_argument(1, None, token_info.line_num, token_info.line_pos)?;
once = true;
}
Token::Tag(Word::Optional) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
optional = true;
}
Token::Tag(Word::Personal) => {
self.validate_argument(3, None, token_info.line_num, token_info.line_pos)?;
location = Location::Personal;
}
Token::Tag(Word::Global) => {
self.validate_argument(3, None, token_info.line_num, token_info.line_pos)?;
location = Location::Global;
}
_ => {
value = self.parse_string_token(token_info)?;
break;
}
}
}
self.instructions.push(Instruction::Include(Include {
location,
once,
optional,
value,
}));
Ok(())
}
}

@ -0,0 +1,60 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{
instruction::{CompilerState, Instruction},
Capability,
},
lexer::{word::Word, Token},
CompileError, Value,
};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct Keep {
pub flags: Vec<Value>,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_keep(&mut self) -> Result<(), CompileError> {
let cmd = Instruction::Keep(Keep {
flags: match self.tokens.peek().map(|r| r.map(|t| &t.token)) {
Some(Ok(Token::Tag(Word::Flags))) => {
let token_info = self.tokens.next().unwrap().unwrap();
self.validate_argument(
0,
Capability::Imap4Flags.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_strings(false)?
}
_ => Vec::new(),
},
});
self.instructions.push(cmd);
Ok(())
}
}

@ -0,0 +1,204 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::instruction::{CompilerState, Instruction},
lexer::{word::Word, Token},
CompileError, Value, VariableType,
};
use super::action_set::Modifier;
#[derive(Debug, Eq, PartialEq, Clone, Serialize, Deserialize)]
pub(crate) struct ForEveryPart {
pub jz_pos: usize,
}
#[derive(Debug, Eq, PartialEq, Clone, Serialize, Deserialize)]
pub(crate) struct Replace {
pub subject: Option<Value>,
pub from: Option<Value>,
pub replacement: Value,
pub mime: bool,
}
#[derive(Debug, Eq, PartialEq, Clone, Serialize, Deserialize)]
pub(crate) struct Enclose {
pub subject: Option<Value>,
pub headers: Vec<Value>,
pub value: Value,
}
#[derive(Debug, Eq, PartialEq, Clone, Serialize, Deserialize)]
pub(crate) struct ExtractText {
pub modifiers: Vec<Modifier>,
pub first: Option<usize>,
pub name: VariableType,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum MimeOpts<T> {
Type,
Subtype,
ContentType,
Param(Vec<T>),
None,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_replace(&mut self) -> Result<(), CompileError> {
let mut subject = None;
let mut from = None;
let replacement;
let mut mime = false;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(Word::Mime) => {
self.validate_argument(1, None, token_info.line_num, token_info.line_pos)?;
mime = true;
}
Token::Tag(Word::Subject) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
subject = self.parse_string()?.into();
}
Token::Tag(Word::From) => {
self.validate_argument(3, None, token_info.line_num, token_info.line_pos)?;
from = self.parse_string()?.into();
}
_ => {
replacement = self.parse_string_token(token_info)?;
break;
}
}
}
self.instructions.push(Instruction::Replace(Replace {
subject,
from,
replacement,
mime,
}));
Ok(())
}
pub(crate) fn parse_enclose(&mut self) -> Result<(), CompileError> {
let mut subject = None;
let mut headers = Vec::new();
let value;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(Word::Subject) => {
self.validate_argument(1, None, token_info.line_num, token_info.line_pos)?;
subject = self.parse_string()?.into();
}
Token::Tag(Word::Headers) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
headers = self.parse_strings(false)?;
}
_ => {
value = self.parse_string_token(token_info)?;
break;
}
}
}
self.instructions.push(Instruction::Enclose(Enclose {
subject,
headers,
value,
}));
Ok(())
}
pub(crate) fn parse_extracttext(&mut self) -> Result<(), CompileError> {
let mut modifiers = Vec::new();
let mut first = None;
let name;
let mut is_local = false;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(Word::First) => {
self.validate_argument(1, None, token_info.line_num, token_info.line_pos)?;
first = self.tokens.expect_number(usize::MAX)?.into();
}
Token::Tag(
word @ (Word::Lower
| Word::Upper
| Word::LowerFirst
| Word::UpperFirst
| Word::QuoteWildcard
| Word::QuoteRegex
| Word::Length),
) => {
let modifier = word.into();
if !modifiers.contains(&modifier) {
modifiers.push(modifier);
}
}
Token::Tag(Word::Replace) => {
let find = self.tokens.unwrap_next()?;
let replace = self.tokens.unwrap_next()?;
modifiers.push(Modifier::Replace {
find: self.parse_string_token(find)?,
replace: self.parse_string_token(replace)?,
});
}
Token::Tag(Word::Local) => {
is_local = true;
}
_ => {
name = self.parse_variable_name(token_info, is_local)?;
break;
}
}
}
modifiers.sort_unstable_by_key(|m| std::cmp::Reverse(m.order()));
self.instructions
.push(Instruction::ExtractText(ExtractText {
modifiers,
first,
name,
}));
Ok(())
}
pub(crate) fn parse_mimeopts(&mut self, opts: Word) -> Result<MimeOpts<Value>, CompileError> {
Ok(match opts {
Word::Type => MimeOpts::Type,
Word::Subtype => MimeOpts::Subtype,
Word::ContentType => MimeOpts::ContentType,
Word::Param => MimeOpts::Param(self.parse_strings(false)?),
_ => MimeOpts::None,
})
}
}

@ -0,0 +1,191 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::{
compiler::{
grammar::{
instruction::{CompilerState, Instruction, MapLocalVars},
Capability,
},
lexer::{word::Word, Token},
CompileError, ErrorType, Value,
},
runtime::actions::action_notify::{validate_from, validate_uri},
FileCarbonCopy,
};
/*
notify [":from" string]
[":importance" <"1" / "2" / "3">]
[":options" string-list]
[":message" string]
<method: string>
*/
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct Notify {
pub from: Option<Value>,
pub importance: Option<Value>,
pub options: Vec<Value>,
pub message: Option<Value>,
pub fcc: Option<FileCarbonCopy<Value>>,
pub method: Value,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_notify(&mut self) -> Result<(), CompileError> {
let method;
let mut from = None;
let mut importance = None;
let mut message = None;
let mut options = Vec::new();
let mut fcc = None;
let mut create = false;
let mut flags = Vec::new();
let mut special_use = None;
let mut mailbox_id = None;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(Word::From) => {
self.validate_argument(1, None, token_info.line_num, token_info.line_pos)?;
let address = self.parse_string()?;
if let Value::Text(address) = &address {
if address.is_empty() || !validate_from(address) {
return Err(token_info.custom(ErrorType::InvalidAddress));
}
}
from = address.into();
}
Token::Tag(Word::Message) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
message = self.parse_string()?.into();
}
Token::Tag(Word::Importance) => {
self.validate_argument(3, None, token_info.line_num, token_info.line_pos)?;
importance = self.parse_string()?.into();
}
Token::Tag(Word::Options) => {
self.validate_argument(4, None, token_info.line_num, token_info.line_pos)?;
options = self.parse_strings(false)?;
}
Token::Tag(Word::Create) => {
self.validate_argument(
5,
Capability::Mailbox.into(),
token_info.line_num,
token_info.line_pos,
)?;
create = true;
}
Token::Tag(Word::SpecialUse) => {
self.validate_argument(
6,
Capability::SpecialUse.into(),
token_info.line_num,
token_info.line_pos,
)?;
special_use = self.parse_string()?.into();
}
Token::Tag(Word::MailboxId) => {
self.validate_argument(
7,
Capability::MailboxId.into(),
token_info.line_num,
token_info.line_pos,
)?;
mailbox_id = self.parse_string()?.into();
}
Token::Tag(Word::Fcc) => {
self.validate_argument(
8,
Capability::Fcc.into(),
token_info.line_num,
token_info.line_pos,
)?;
fcc = self.parse_string()?.into();
}
Token::Tag(Word::Flags) => {
self.validate_argument(
9,
Capability::Imap4Flags.into(),
token_info.line_num,
token_info.line_pos,
)?;
flags = self.parse_strings(false)?;
}
_ => {
if let Token::StringConstant(uri) = &token_info.token {
if validate_uri(uri.to_string().as_ref()).is_none() {
return Err(token_info.custom(ErrorType::InvalidURI));
}
}
method = self.parse_string_token(token_info)?;
break;
}
}
}
if fcc.is_none()
&& (create || !flags.is_empty() || special_use.is_some() || mailbox_id.is_some())
{
return Err(self.tokens.unwrap_next()?.missing_tag(":fcc"));
}
self.instructions.push(Instruction::Notify(Notify {
method,
from,
importance,
options,
message,
fcc: if let Some(fcc) = fcc {
FileCarbonCopy {
mailbox: fcc,
create,
flags,
special_use,
mailbox_id,
}
.into()
} else {
None
},
}));
Ok(())
}
}
impl MapLocalVars for FileCarbonCopy<Value> {
fn map_local_vars(&mut self, last_id: usize) {
self.mailbox.map_local_vars(last_id);
self.mailbox_id.map_local_vars(last_id);
self.flags.map_local_vars(last_id);
self.special_use.map_local_vars(last_id);
}
}

@ -0,0 +1,259 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{
instruction::{CompilerState, Instruction, MapLocalVars},
Capability,
},
lexer::{word::Word, Token},
CompileError, Value,
};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct Redirect {
pub copy: bool,
pub address: Value,
pub notify: Notify,
pub return_of_content: Ret,
pub by_time: ByTime<Value>,
pub list: bool,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, Hash)]
pub enum NotifyItem {
Success,
Failure,
Delay,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, Hash)]
pub enum Notify {
Never,
Items(Vec<NotifyItem>),
Default,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, Hash)]
pub enum Ret {
Full,
Hdrs,
Default,
}
/*
Usage: redirect [:bytimerelative <rlimit: number> /
:bytimeabsolute <alimit:string>
[:bymode "notify"|"return"] [:bytrace]]
<address: string>
*/
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, Hash)]
pub enum ByTime<T> {
Relative {
rlimit: u64,
mode: ByMode,
trace: bool,
},
Absolute {
alimit: T,
mode: ByMode,
trace: bool,
},
None,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, Hash)]
pub enum ByMode {
Notify,
Return,
Default,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_redirect(&mut self) -> Result<(), CompileError> {
let address;
let mut copy = false;
let mut ret = Ret::Default;
let mut notify = Notify::Default;
let mut list = false;
let mut by_mode = ByMode::Default;
let mut by_trace = false;
let mut by_rlimit = None;
let mut by_alimit = None;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(Word::Copy) => {
self.validate_argument(
1,
Capability::Copy.into(),
token_info.line_num,
token_info.line_pos,
)?;
copy = true;
}
Token::Tag(Word::List) => {
self.validate_argument(
2,
Capability::ExtLists.into(),
token_info.line_num,
token_info.line_pos,
)?;
list = true;
}
Token::Tag(Word::ByTrace) => {
self.validate_argument(
3,
Capability::RedirectDeliverBy.into(),
token_info.line_num,
token_info.line_pos,
)?;
by_trace = true;
}
Token::Tag(Word::ByMode) => {
self.validate_argument(
4,
Capability::RedirectDeliverBy.into(),
token_info.line_num,
token_info.line_pos,
)?;
let by_mode_ = self.tokens.expect_static_string()?;
if by_mode_.eq_ignore_ascii_case("notify") {
by_mode = ByMode::Notify;
} else if by_mode_.eq_ignore_ascii_case("return") {
by_mode = ByMode::Return;
} else {
return Err(token_info.expected("\"notify\" or \"return\""));
}
}
Token::Tag(Word::ByTimeRelative) => {
self.validate_argument(
5,
Capability::RedirectDeliverBy.into(),
token_info.line_num,
token_info.line_pos,
)?;
by_rlimit = (self.tokens.expect_number(u64::MAX as usize)? as u64).into();
}
Token::Tag(Word::ByTimeAbsolute) => {
self.validate_argument(
5,
Capability::RedirectDeliverBy.into(),
token_info.line_num,
token_info.line_pos,
)?;
by_alimit = self.parse_string()?.into();
}
Token::Tag(Word::Ret) => {
self.validate_argument(
6,
Capability::RedirectDsn.into(),
token_info.line_num,
token_info.line_pos,
)?;
let ret_ = self.tokens.expect_static_string()?;
if ret_.eq_ignore_ascii_case("full") {
ret = Ret::Full;
} else if ret_.eq_ignore_ascii_case("hdrs") {
ret = Ret::Hdrs;
} else {
return Err(token_info.expected("\"FULL\" or \"HDRS\""));
}
}
Token::Tag(Word::Notify) => {
self.validate_argument(
7,
Capability::RedirectDsn.into(),
token_info.line_num,
token_info.line_pos,
)?;
let notify_ = self.tokens.expect_static_string()?;
if notify_.eq_ignore_ascii_case("never") {
notify = Notify::Never;
} else {
let mut items = Vec::new();
for item in notify_.split(',') {
let item = item.trim();
if item.eq_ignore_ascii_case("success") {
items.push(NotifyItem::Success);
} else if item.eq_ignore_ascii_case("failure") {
items.push(NotifyItem::Failure);
} else if item.eq_ignore_ascii_case("delay") {
items.push(NotifyItem::Delay);
}
}
if !items.is_empty() {
notify = Notify::Items(items);
} else {
return Err(
token_info.expected("\"NEVER\" or \"SUCCESS, FAILURE, DELAY, ..\"")
);
}
}
}
_ => {
address = self.parse_string_token(token_info)?;
break;
}
}
}
self.instructions.push(Instruction::Redirect(Redirect {
address,
copy,
notify,
return_of_content: ret,
by_time: if let Some(alimit) = by_alimit {
ByTime::Absolute {
alimit,
mode: by_mode,
trace: by_trace,
}
} else if let Some(rlimit) = by_rlimit {
ByTime::Relative {
rlimit,
mode: by_mode,
trace: by_trace,
}
} else {
ByTime::None
},
list,
}));
Ok(())
}
}
impl MapLocalVars for ByTime<Value> {
fn map_local_vars(&mut self, last_id: usize) {
if let ByTime::Absolute { alimit, .. } = self {
alimit.map_local_vars(last_id)
}
}
}

@ -0,0 +1,46 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::instruction::{CompilerState, Instruction},
CompileError, Value,
};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct Reject {
pub ereject: bool,
pub reason: Value,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_reject(&mut self, ereject: bool) -> Result<(), CompileError> {
let cmd = Instruction::Reject(Reject {
ereject,
reason: self.parse_string()?,
});
self.instructions.push(cmd);
Ok(())
}
}

@ -0,0 +1,110 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::compiler::{
grammar::{
instruction::{CompilerState, Instruction},
Capability,
},
lexer::Token,
CompileError,
};
impl<'x> CompilerState<'x> {
fn add_capability(&mut self, capabilities: &mut Vec<Capability>, capability: Capability) {
if !self.has_capability(&capability) {
let parent_capability = if matches!(&capability, Capability::SpamTestPlus) {
Some(Capability::SpamTest)
} else {
None
};
capabilities.push(capability.clone());
self.block.capabilities.insert(capability);
if let Some(capability) = parent_capability {
if !self.has_capability(&capability) {
capabilities.push(capability.clone());
self.block.capabilities.insert(capability);
}
}
}
}
pub(crate) fn parse_require(&mut self) -> Result<(), CompileError> {
let mut capabilities = Vec::new();
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::BracketOpen => loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::StringConstant(value) => {
self.add_capability(
&mut capabilities,
Capability::parse(value.to_string().as_ref()),
);
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Comma => (),
Token::BracketClose => break,
_ => {
return Err(token_info.expected("']' or ','"));
}
}
}
_ => {
return Err(token_info.expected("string"));
}
}
},
Token::StringConstant(value) => {
self.add_capability(
&mut capabilities,
Capability::parse(value.to_string().as_ref()),
);
}
_ => {
return Err(token_info.expected("'[' or string"));
}
}
if !capabilities.is_empty() {
if self.block.require_pos == usize::MAX {
self.block.require_pos = self.instructions.len();
self.instructions.push(Instruction::Require(capabilities));
} else if let Some(Instruction::Require(capabilties)) =
self.instructions.get_mut(self.block.require_pos)
{
capabilties.extend(capabilities)
} else {
#[cfg(test)]
panic!(
"Invalid require instruction position {}.",
self.block.require_pos
)
}
}
Ok(())
}
}

@ -0,0 +1,184 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use std::convert::TryFrom;
use crate::sieve::{
compiler::{
grammar::instruction::{CompilerState, Instruction},
lexer::{tokenizer::TokenInfo, word::Word, Token},
CompileError, ErrorType, Value, VariableType,
},
Envelope,
};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum Modifier {
Lower,
Upper,
LowerFirst,
UpperFirst,
QuoteWildcard,
QuoteRegex,
EncodeUrl,
Length,
Replace { find: Value, replace: Value },
}
impl Modifier {
pub fn order(&self) -> usize {
match self {
Modifier::Lower => 41,
Modifier::Upper => 40,
Modifier::LowerFirst => 31,
Modifier::UpperFirst => 30,
Modifier::QuoteWildcard => 20,
Modifier::QuoteRegex => 21,
Modifier::EncodeUrl => 15,
Modifier::Length => 10,
Modifier::Replace { .. } => 40,
}
}
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct Set {
pub modifiers: Vec<Modifier>,
pub name: VariableType,
pub value: Value,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_set(&mut self) -> Result<(), CompileError> {
let mut modifiers = Vec::new();
let mut name = None;
let mut is_local = false;
let value;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::Lower
| Word::Upper
| Word::LowerFirst
| Word::UpperFirst
| Word::QuoteWildcard
| Word::QuoteRegex
| Word::Length
| Word::EncodeUrl),
) => {
let modifier = word.into();
if !modifiers.contains(&modifier) {
modifiers.push(modifier);
}
}
Token::Tag(Word::Replace) => {
let find = self.tokens.unwrap_next()?;
let replace = self.tokens.unwrap_next()?;
modifiers.push(Modifier::Replace {
find: self.parse_string_token(find)?,
replace: self.parse_string_token(replace)?,
});
}
Token::Tag(Word::Local) => {
is_local = true;
}
_ => {
if name.is_none() {
name = self.parse_variable_name(token_info, is_local)?.into();
} else {
value = self.parse_string_token(token_info)?;
break;
}
}
}
}
modifiers.sort_unstable_by_key(|m| std::cmp::Reverse(m.order()));
self.instructions.push(Instruction::Set(Set {
modifiers,
name: name.unwrap(),
value,
}));
Ok(())
}
pub(crate) fn parse_variable_name(
&mut self,
token_info: TokenInfo,
register_as_local: bool,
) -> Result<VariableType, CompileError> {
match token_info.token {
Token::StringConstant(value) => self
.register_variable(value.into_string(), register_as_local)
.map_err(|error_type| CompileError {
line_num: token_info.line_num,
line_pos: token_info.line_pos,
error_type,
}),
_ => Err(token_info.custom(ErrorType::ExpectedConstantString)),
}
}
pub(crate) fn register_variable(
&mut self,
name: String,
register_as_local: bool,
) -> Result<VariableType, ErrorType> {
let name = name.to_lowercase();
if let Some((namespace, part)) = name.split_once('.') {
match namespace {
"global" | "t" => Ok(VariableType::Global(part.to_string())),
"envelope" => Envelope::try_from(part)
.map(VariableType::Envelope)
.map_err(|_| ErrorType::InvalidNamespace(namespace.to_string())),
_ => Err(ErrorType::InvalidNamespace(namespace.to_string())),
}
} else {
Ok(if !self.is_var_global(&name) {
VariableType::Local(self.register_local_var(name, register_as_local))
} else {
VariableType::Global(name)
})
}
}
}
impl From<Word> for Modifier {
fn from(word: Word) -> Self {
match word {
Word::Lower => Modifier::Lower,
Word::Upper => Modifier::Upper,
Word::LowerFirst => Modifier::LowerFirst,
Word::UpperFirst => Modifier::UpperFirst,
Word::QuoteWildcard => Modifier::QuoteWildcard,
Word::QuoteRegex => Modifier::QuoteRegex,
Word::Length => Modifier::Length,
Word::EncodeUrl => Modifier::EncodeUrl,
_ => unreachable!(),
}
}
}

@ -0,0 +1,235 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::{
compiler::{
grammar::{
instruction::{CompilerState, Instruction},
test::Test,
Capability,
},
lexer::{word::Word, Token},
CompileError, Value,
},
FileCarbonCopy,
};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct Vacation {
pub subject: Option<Value>,
pub from: Option<Value>,
pub mime: bool,
pub fcc: Option<FileCarbonCopy<Value>>,
pub reason: Value,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestVacation {
pub addresses: Vec<Value>,
pub period: Period,
pub handle: Option<Value>,
pub reason: Value,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum Period {
Days(u64),
Seconds(u64),
Default,
}
/*
vacation [":days" number] [":subject" string]
[":from" string] [":addresses" string-list]
[":mime"] [":handle" string] <reason: string>
vacation [FCC]
[":days" number | ":seconds" number]
[":subject" string]
[":from" string]
[":addresses" string-list]
[":mime"]
[":handle" string]
<reason: string>
":flags" <list-of-flags: string-list>
FCC = ":fcc" string *FCC-OPTS
; per Section 2.6.2 of RFC 5228,
; the tagged arguments in FCC may appear in any order
FCC-OPTS = CREATE / IMAP-FLAGS / SPECIAL-USE
; each option MUST NOT appear more than once
CREATE = ":create"
IMAP-FLAGS = ":flags" string-list
SPECIAL-USE = ":specialuse" string
*/
impl<'x> CompilerState<'x> {
pub(crate) fn parse_vacation(&mut self) -> Result<(), CompileError> {
let mut period = Period::Default;
let mut subject = None;
let mut from = None;
let mut handle = None;
let mut addresses = Vec::new();
let mut mime = false;
let reason;
let mut fcc = None;
let mut create = false;
let mut flags = Vec::new();
let mut special_use = None;
let mut mailbox_id = None;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(Word::Mime) => {
self.validate_argument(1, None, token_info.line_num, token_info.line_pos)?;
mime = true;
}
Token::Tag(Word::Create) => {
self.validate_argument(
2,
Capability::Mailbox.into(),
token_info.line_num,
token_info.line_pos,
)?;
create = true;
}
Token::Tag(Word::Days) => {
self.validate_argument(3, None, token_info.line_num, token_info.line_pos)?;
period = Period::Days(self.tokens.expect_number(u64::MAX as usize)? as u64);
}
Token::Tag(Word::Seconds) => {
self.validate_argument(
3,
Capability::VacationSeconds.into(),
token_info.line_num,
token_info.line_pos,
)?;
period = Period::Seconds(self.tokens.expect_number(u64::MAX as usize)? as u64);
}
Token::Tag(Word::Subject) => {
self.validate_argument(4, None, token_info.line_num, token_info.line_pos)?;
subject = self.parse_string()?.into();
}
Token::Tag(Word::From) => {
self.validate_argument(5, None, token_info.line_num, token_info.line_pos)?;
from = self.parse_string()?.into();
}
Token::Tag(Word::Handle) => {
self.validate_argument(6, None, token_info.line_num, token_info.line_pos)?;
handle = self.parse_string()?.into();
}
Token::Tag(Word::SpecialUse) => {
self.validate_argument(
7,
Capability::SpecialUse.into(),
token_info.line_num,
token_info.line_pos,
)?;
special_use = self.parse_string()?.into();
}
Token::Tag(Word::MailboxId) => {
self.validate_argument(
8,
Capability::MailboxId.into(),
token_info.line_num,
token_info.line_pos,
)?;
mailbox_id = self.parse_string()?.into();
}
Token::Tag(Word::Fcc) => {
self.validate_argument(
9,
Capability::Fcc.into(),
token_info.line_num,
token_info.line_pos,
)?;
fcc = self.parse_string()?.into();
}
Token::Tag(Word::Flags) => {
self.validate_argument(
10,
Capability::Imap4Flags.into(),
token_info.line_num,
token_info.line_pos,
)?;
flags = self.parse_strings(false)?;
}
Token::Tag(Word::Addresses) => {
self.validate_argument(11, None, token_info.line_num, token_info.line_pos)?;
addresses = self.parse_strings(false)?;
}
_ => {
reason = self.parse_string_token(token_info)?;
break;
}
}
}
if fcc.is_none()
&& (create || !flags.is_empty() || special_use.is_some() || mailbox_id.is_some())
{
return Err(self.tokens.unwrap_next()?.missing_tag(":fcc"));
}
self.instructions
.push(Instruction::Test(Test::Vacation(TestVacation {
period,
handle,
reason: reason.clone(),
addresses,
})));
self.instructions
.push(Instruction::Jz(self.instructions.len() + 2));
self.instructions.push(Instruction::Vacation(Vacation {
reason,
subject,
from,
mime,
fcc: if let Some(fcc) = fcc {
FileCarbonCopy {
mailbox: fcc,
create,
flags,
special_use,
mailbox_id,
}
.into()
} else {
None
},
}));
Ok(())
}
}

@ -0,0 +1,36 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
pub mod action_convert;
pub mod action_editheader;
pub mod action_fileinto;
pub mod action_flags;
pub mod action_include;
pub mod action_keep;
pub mod action_mime;
pub mod action_notify;
pub mod action_redirect;
pub mod action_reject;
pub mod action_require;
pub mod action_set;
pub mod action_vacation;

@ -0,0 +1,81 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{Number, VariableType};
pub mod parser;
pub mod tokenizer;
#[derive(Debug, PartialEq, Eq, Clone, Serialize, Deserialize)]
pub(crate) enum Expression {
Variable(VariableType),
Number(Number),
String(String),
BinaryOperator(BinaryOperator),
UnaryOperator(UnaryOperator),
Function { id: u32, num_args: u32 },
}
#[derive(Debug, PartialEq, Eq, Clone, Copy, Serialize, Deserialize)]
pub(crate) enum BinaryOperator {
Add,
Subtract,
Multiply,
Divide,
And,
Or,
Xor,
Eq,
Ne,
Lt,
Le,
Gt,
Ge,
}
#[derive(Debug, PartialEq, Eq, Clone, Copy, Serialize, Deserialize)]
pub(crate) enum UnaryOperator {
Not,
Minus,
}
#[derive(Debug, PartialEq, Eq, Clone)]
pub(crate) enum Token {
Variable(VariableType),
Function {
name: String,
id: u32,
num_args: u32,
},
Number(Number),
String(String),
BinaryOperator(BinaryOperator),
UnaryOperator(UnaryOperator),
OpenParen,
CloseParen,
Comma,
}

@ -0,0 +1,181 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use super::{tokenizer::Tokenizer, BinaryOperator, Expression, Token};
pub(crate) struct ExpressionParser<'x, F>
where
F: Fn(&str, bool) -> Result<Token, String>,
{
pub(crate) tokenizer: Tokenizer<'x, F>,
pub(crate) output: Vec<Expression>,
operator_stack: Vec<Token>,
}
impl<'x, F> ExpressionParser<'x, F>
where
F: Fn(&str, bool) -> Result<Token, String>,
{
pub fn from_tokenizer(tokenizer: Tokenizer<'x, F>) -> Self {
Self {
tokenizer,
output: Vec::new(),
operator_stack: Vec::new(),
}
}
pub fn parse(mut self) -> Result<Self, String> {
let mut arg_count: Vec<i32> = vec![];
while let Some(token) = self.tokenizer.next()? {
match token {
Token::Variable(v) => {
if let Some(x) = arg_count.last_mut() {
*x = x.saturating_add(1);
}
self.output.push(Expression::Variable(v))
}
Token::Number(n) => {
if let Some(x) = arg_count.last_mut() {
*x = x.saturating_add(1);
}
self.output.push(Expression::Number(n))
}
Token::String(s) => {
if let Some(x) = arg_count.last_mut() {
*x = x.saturating_add(1);
}
self.output.push(Expression::String(s))
}
Token::UnaryOperator(uop) => self.operator_stack.push(Token::UnaryOperator(uop)),
Token::OpenParen => self.operator_stack.push(token),
Token::CloseParen => {
loop {
match self.operator_stack.pop() {
Some(Token::OpenParen) => {
break;
}
Some(Token::BinaryOperator(bop)) => {
self.output.push(Expression::BinaryOperator(bop))
}
Some(Token::UnaryOperator(uop)) => {
self.output.push(Expression::UnaryOperator(uop))
}
_ => return Err("Mismatched parentheses".to_string()),
}
}
if let Some(Token::Function { id, num_args, name }) = self.operator_stack.last()
{
let got_args = arg_count.pop().unwrap();
if got_args != *num_args as i32 {
return Err(format!(
"Expression function {:?} expected {} arguments, got {}",
name, num_args, got_args
));
}
let expr = Expression::Function {
id: *id,
num_args: *num_args,
};
self.operator_stack.pop();
self.output.push(expr);
}
}
Token::BinaryOperator(bop) => {
if let Some(x) = arg_count.last_mut() {
*x = x.saturating_sub(1);
}
while let Some(top_token) = self.operator_stack.last() {
match top_token {
Token::BinaryOperator(top_bop) => {
if bop.precedence() <= top_bop.precedence() {
let top_bop = *top_bop;
self.operator_stack.pop();
self.output.push(Expression::BinaryOperator(top_bop));
} else {
break;
}
}
Token::UnaryOperator(top_uop) => {
let top_uop = *top_uop;
self.operator_stack.pop();
self.output.push(Expression::UnaryOperator(top_uop));
}
_ => break,
}
}
self.operator_stack.push(Token::BinaryOperator(bop));
}
Token::Function { id, name, num_args } => {
if let Some(x) = arg_count.last_mut() {
*x = x.saturating_add(1);
}
arg_count.push(0);
self.operator_stack
.push(Token::Function { id, name, num_args })
}
Token::Comma => {
while let Some(token) = self.operator_stack.last() {
match token {
Token::OpenParen => break,
Token::BinaryOperator(bop) => {
self.output.push(Expression::BinaryOperator(*bop));
self.operator_stack.pop();
}
Token::UnaryOperator(uop) => {
self.output.push(Expression::UnaryOperator(*uop));
self.operator_stack.pop();
}
_ => break,
}
}
}
}
}
while let Some(token) = self.operator_stack.pop() {
match token {
Token::BinaryOperator(bop) => self.output.push(Expression::BinaryOperator(bop)),
Token::UnaryOperator(uop) => self.output.push(Expression::UnaryOperator(uop)),
_ => return Err("Invalid token on the operator stack".to_string()),
}
}
Ok(self)
}
}
impl BinaryOperator {
fn precedence(&self) -> i32 {
match self {
BinaryOperator::Multiply | BinaryOperator::Divide => 7,
BinaryOperator::Add | BinaryOperator::Subtract => 6,
BinaryOperator::Gt | BinaryOperator::Ge | BinaryOperator::Lt | BinaryOperator::Le => 5,
BinaryOperator::Eq | BinaryOperator::Ne => 4,
BinaryOperator::Xor => 3,
BinaryOperator::And => 2,
BinaryOperator::Or => 1,
}
}
}

@ -0,0 +1,281 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::{
iter::{Enumerate, Peekable},
slice::Iter,
};
use crate::sieve::{compiler::Number, runtime::eval::IntoString};
use super::{BinaryOperator, Token, UnaryOperator};
pub(crate) struct Tokenizer<'x, F>
where
F: Fn(&str, bool) -> Result<Token, String>,
{
pub(crate) iter: Peekable<Enumerate<Iter<'x, u8>>>,
token_map: F,
buf: Vec<u8>,
depth: u32,
next_token: Vec<Token>,
has_number: bool,
has_dot: bool,
has_alpha: bool,
is_start: bool,
is_eof: bool,
}
impl<'x, F> Tokenizer<'x, F>
where
F: Fn(&str, bool) -> Result<Token, String>,
{
#[cfg(test)]
pub fn new(expr: &'x str, token_map: F) -> Self {
Self::from_iter(expr.as_bytes().iter().enumerate().peekable(), token_map)
}
#[allow(clippy::should_implement_trait)]
pub(crate) fn from_iter(iter: Peekable<Enumerate<Iter<'x, u8>>>, token_map: F) -> Self {
Self {
iter,
buf: Vec::new(),
depth: 0,
next_token: Vec::with_capacity(2),
has_number: false,
has_dot: false,
has_alpha: false,
is_start: true,
is_eof: false,
token_map,
}
}
#[allow(clippy::should_implement_trait)]
pub(crate) fn next(&mut self) -> Result<Option<Token>, String> {
if let Some(token) = self.next_token.pop() {
return Ok(Some(token));
} else if self.is_eof {
return Ok(None);
}
while let Some((_, &ch)) = self.iter.next() {
match ch {
b'A'..=b'Z' | b'a'..=b'z' | b'_' => {
self.buf.push(ch);
self.has_alpha = true;
}
b'0'..=b'9' => {
self.buf.push(ch);
self.has_number = true;
}
b'.' => {
self.buf.push(ch);
self.has_dot = true;
}
b'}' => {
self.is_eof = true;
break;
}
b'[' if self.buf.last().map_or(false, |c| c.is_ascii_alphanumeric()) => {
self.buf.push(ch);
}
b'-' if self.buf.last().map_or(false, |c| *c == b'[')
|| matches!(self.buf.get(0..7), Some(b"header.")) =>
{
self.buf.push(ch);
}
b']' if self.buf.contains(&b'[') => {
self.buf.push(b']');
}
b'*' if self.buf.last().map_or(false, |&c| c == b'[' || c == b'.') => {
self.buf.push(ch);
}
_ => {
let prev_token = if !self.buf.is_empty() {
self.is_start = false;
self.parse_buf()?.into()
} else {
None
};
let token = match ch {
b'&' => {
if matches!(self.iter.peek(), Some((_, b'&'))) {
self.iter.next();
}
Token::BinaryOperator(BinaryOperator::And)
}
b'|' => {
if matches!(self.iter.peek(), Some((_, b'|'))) {
self.iter.next();
}
Token::BinaryOperator(BinaryOperator::Or)
}
b'!' => {
if matches!(self.iter.peek(), Some((_, b'='))) {
self.iter.next();
Token::BinaryOperator(BinaryOperator::Ne)
} else {
Token::UnaryOperator(UnaryOperator::Not)
}
}
b'^' => Token::BinaryOperator(BinaryOperator::Xor),
b'(' => {
self.depth += 1;
Token::OpenParen
}
b')' => {
if self.depth == 0 {
return Err("Unmatched close parenthesis".to_string());
}
self.depth -= 1;
Token::CloseParen
}
b'+' => Token::BinaryOperator(BinaryOperator::Add),
b'*' => Token::BinaryOperator(BinaryOperator::Multiply),
b'/' => Token::BinaryOperator(BinaryOperator::Divide),
b'-' => {
if self.is_start {
Token::UnaryOperator(UnaryOperator::Minus)
} else {
Token::BinaryOperator(BinaryOperator::Subtract)
}
}
b'=' => match self.iter.next() {
Some((_, b'=')) => Token::BinaryOperator(BinaryOperator::Eq),
Some((_, b'>')) => Token::BinaryOperator(BinaryOperator::Ge),
Some((_, b'<')) => Token::BinaryOperator(BinaryOperator::Le),
_ => Token::BinaryOperator(BinaryOperator::Eq),
},
b'>' => match self.iter.peek() {
Some((_, b'=')) => {
self.iter.next();
Token::BinaryOperator(BinaryOperator::Ge)
}
_ => Token::BinaryOperator(BinaryOperator::Gt),
},
b'<' => match self.iter.peek() {
Some((_, b'=')) => {
self.iter.next();
Token::BinaryOperator(BinaryOperator::Le)
}
_ => Token::BinaryOperator(BinaryOperator::Lt),
},
b',' => {
if self.depth == 0 {
return Err("Comma outside of function call".to_string());
}
Token::Comma
}
b' ' | b'\r' | b'\n' => {
if prev_token.is_some() {
return Ok(prev_token);
} else {
continue;
}
}
b'\"' | b'\'' => {
let mut buf = Vec::with_capacity(16);
let stop_ch = ch;
let mut last_ch = 0;
let mut found_end = false;
for (_, &ch) in self.iter.by_ref() {
if ch == stop_ch && last_ch != b'\\' {
found_end = true;
break;
} else if ch != b'\\' || last_ch == b'\\' {
buf.push(ch);
}
last_ch = ch;
}
if found_end {
Token::String(
String::from_utf8(buf)
.map_err(|_| "Invalid UTF-8".to_string())?,
)
} else {
return Err("Unterminated string".to_string());
}
}
_ => {
return Err(format!("Invalid character {:?}", char::from(ch),));
}
};
self.is_start = ch == b'(';
return if prev_token.is_some() {
self.next_token.push(token);
Ok(prev_token)
} else {
Ok(Some(token))
};
}
}
}
if self.depth > 0 {
Err("Unmatched open parenthesis".to_string())
} else if !self.buf.is_empty() {
self.parse_buf().map(Some)
} else {
Ok(None)
}
}
fn parse_buf(&mut self) -> Result<Token, String> {
let buf = std::mem::take(&mut self.buf).into_string();
if self.has_number && !self.has_alpha {
self.has_number = false;
if self.has_dot {
self.has_dot = false;
buf.parse::<f64>()
.map(|f| Token::Number(Number::Float(f)))
.map_err(|_| format!("Invalid float value {}", buf,))
} else {
buf.parse::<i64>()
.map(|i| Token::Number(Number::Integer(i)))
.map_err(|_| format!("Invalid integer value {}", buf,))
}
} else {
let has_dot = self.has_dot;
let has_number = self.has_number;
self.has_alpha = false;
self.has_number = false;
self.has_dot = false;
if !has_number && !has_dot && [4, 5].contains(&buf.len()) {
if buf == "true" {
return Ok(Token::Number(Number::Integer(1)));
} else if buf == "false" {
return Ok(Token::Number(Number::Integer(0)));
}
}
(self.token_map)(&buf, has_dot)
}
}
}

File diff suppressed because it is too large Load Diff

@ -0,0 +1,688 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::fmt::Display;
use phf::phf_map;
use serde::{Deserialize, Serialize};
use self::instruction::CompilerState;
use super::{
lexer::{tokenizer::TokenInfo, word::Word, Token},
CompileError, ErrorType, Regex, Value,
};
pub mod actions;
pub mod expr;
pub mod instruction;
pub mod test;
pub mod tests;
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, Hash)]
pub enum Capability {
Envelope,
EnvelopeDsn,
EnvelopeDeliverBy,
FileInto,
EncodedCharacter,
Comparator(Comparator),
Other(String),
Body,
Convert,
Copy,
Relational,
Date,
Index,
Duplicate,
Variables,
EditHeader,
ForEveryPart,
Mime,
Replace,
Enclose,
ExtractText,
Enotify,
RedirectDsn,
RedirectDeliverBy,
Environment,
Reject,
Ereject,
ExtLists,
SubAddress,
Vacation,
VacationSeconds,
Fcc,
Mailbox,
MailboxId,
MboxMetadata,
ServerMetadata,
SpecialUse,
Imap4Flags,
Ihave,
ImapSieve,
Include,
Regex,
SpamTest,
SpamTestPlus,
VirusTest,
// Extensions
Eval,
Plugins,
ForEveryLine,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
pub enum AddressPart {
LocalPart,
Domain,
All,
User,
Detail,
Name,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum MatchType {
Is,
Contains,
Matches(u64),
Regex(u64),
Value(RelationalMatch),
Count(RelationalMatch),
List,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum RelationalMatch {
Gt,
Ge,
Lt,
Le,
Eq,
Ne,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, Hash)]
pub enum Comparator {
Elbonia,
Octet,
AsciiCaseMap,
AsciiNumeric,
Other(String),
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct Clear {
pub(crate) local_vars_idx: u32,
pub(crate) local_vars_num: u32,
pub(crate) match_vars: u64,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct Invalid {
pub(crate) name: String,
pub(crate) line_num: usize,
pub(crate) line_pos: usize,
}
#[derive(Debug, Eq, PartialEq, Clone, Serialize, Deserialize)]
pub(crate) struct ForEveryLine {
pub var_idx: usize,
pub jz_pos: usize,
}
impl<'x> CompilerState<'x> {
#[inline(always)]
pub fn expect_instruction_end(&mut self) -> Result<(), CompileError> {
self.tokens.expect_token(Token::Semicolon)
}
pub fn ignore_instruction(&mut self) -> Result<(), CompileError> {
// Skip entire instruction
let mut curly_count = 0;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Semicolon if curly_count == 0 => {
break;
}
Token::CurlyOpen => {
curly_count += 1;
}
Token::CurlyClose => match curly_count {
0 => {
return Err(token_info.expected("instruction"));
}
1 => {
break;
}
_ => curly_count -= 1,
},
_ => (),
}
}
Ok(())
}
pub fn ignore_test(&mut self) -> Result<(), CompileError> {
let mut d_count = 0;
while let Some(token_info) = self.tokens.peek() {
match token_info?.token {
Token::ParenthesisOpen => {
d_count += 1;
}
Token::ParenthesisClose => {
if d_count == 0 {
break;
} else {
d_count -= 1;
}
}
Token::Comma => {
if d_count == 0 {
break;
}
}
Token::CurlyOpen => {
break;
}
_ => (),
}
self.tokens.next();
}
Ok(())
}
pub fn parse_match_type(&mut self, word: Word) -> Result<MatchType, CompileError> {
match word {
Word::Is => Ok(MatchType::Is),
Word::Contains => Ok(MatchType::Contains),
Word::Matches => {
self.block.match_test_pos.push(self.instructions.len());
Ok(MatchType::Matches(0))
}
Word::Regex => {
self.block.match_test_pos.push(self.instructions.len());
Ok(MatchType::Regex(0))
}
Word::List => Ok(MatchType::List),
_ => {
let token_info = self.tokens.unwrap_next()?;
if let Token::StringConstant(text) = &token_info.token {
if let Some(relational) = RELATIONAL.get(text.to_string().as_ref()) {
return Ok(if word == Word::Value {
MatchType::Value(*relational)
} else {
MatchType::Count(*relational)
});
}
}
Err(token_info.expected("relational match"))
}
}
}
pub(crate) fn parse_comparator(&mut self) -> Result<Comparator, CompileError> {
let comparator = self.tokens.expect_static_string()?;
Ok(if let Some(comparator) = COMPARATOR.get(&comparator) {
comparator.clone()
} else {
Comparator::Other(comparator)
})
}
pub(crate) fn parse_static_strings(&mut self) -> Result<Vec<String>, CompileError> {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::BracketOpen => {
let mut strings = Vec::new();
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::StringConstant(string) => {
strings.push(string.into_string());
}
Token::Comma => (),
Token::BracketClose if !strings.is_empty() => break,
_ => return Err(token_info.expected("constant string")),
}
}
Ok(strings)
}
Token::StringConstant(string) => Ok(vec![string.into_string()]),
_ => Err(token_info.expected("'[' or constant string")),
}
}
pub fn parse_string(&mut self) -> Result<Value, CompileError> {
let next_token = self.tokens.unwrap_next()?;
match next_token.token {
Token::StringConstant(s) => Ok(Value::from(s)),
Token::StringVariable(s) => {
self.tokenize_string(&s, true)
.map_err(|error_type| CompileError {
line_num: next_token.line_num,
line_pos: next_token.line_pos,
error_type,
})
}
Token::BracketOpen => {
let mut items = self.parse_string_list(false)?;
match items.pop() {
Some(s) if items.is_empty() => Ok(s),
_ => Err(next_token.expected("string")),
}
}
_ => Err(next_token.expected("string")),
}
}
pub(crate) fn parse_strings(&mut self, allow_empty: bool) -> Result<Vec<Value>, CompileError> {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::BracketOpen => self.parse_string_list(allow_empty),
Token::StringConstant(s) => Ok(vec![Value::from(s)]),
Token::StringVariable(s) => {
self.tokenize_string(&s, true)
.map(|s| vec![s])
.map_err(|error_type| CompileError {
line_num: token_info.line_num,
line_pos: token_info.line_pos,
error_type,
})
}
_ => Err(token_info.expected("'[' or string")),
}
}
pub(crate) fn parse_string_token(
&mut self,
token_info: TokenInfo,
) -> Result<Value, CompileError> {
match token_info.token {
Token::StringConstant(s) => Ok(Value::from(s)),
Token::StringVariable(s) => {
self.tokenize_string(&s, true)
.map_err(|error_type| CompileError {
line_num: token_info.line_num,
line_pos: token_info.line_pos,
error_type,
})
}
_ => Err(token_info.expected("string")),
}
}
pub(crate) fn parse_strings_token(
&mut self,
token_info: TokenInfo,
) -> Result<Vec<Value>, CompileError> {
match token_info.token {
Token::StringConstant(s) => Ok(vec![Value::from(s)]),
Token::StringVariable(s) => {
self.tokenize_string(&s, true)
.map(|s| vec![s])
.map_err(|error_type| CompileError {
line_num: token_info.line_num,
line_pos: token_info.line_pos,
error_type,
})
}
Token::BracketOpen => self.parse_string_list(false),
_ => Err(token_info.expected("string")),
}
}
pub(crate) fn parse_string_list(
&mut self,
allow_empty: bool,
) -> Result<Vec<Value>, CompileError> {
let mut strings = Vec::new();
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::StringConstant(s) => {
strings.push(Value::from(s));
}
Token::StringVariable(s) => {
strings.push(self.tokenize_string(&s, true).map_err(|error_type| {
CompileError {
line_num: token_info.line_num,
line_pos: token_info.line_pos,
error_type,
}
})?);
}
Token::Comma => (),
Token::BracketClose if !strings.is_empty() || allow_empty => break,
_ => return Err(token_info.expected("string or string list")),
}
}
Ok(strings)
}
#[inline(always)]
pub(crate) fn has_capability(&self, capability: &Capability) -> bool {
[&self.block]
.into_iter()
.chain(self.block_stack.iter())
.any(|b| b.capabilities.contains(capability))
}
#[inline(always)]
pub(crate) fn reset_param_check(&mut self) {
self.param_check.fill(false);
}
#[inline(always)]
pub(crate) fn validate_argument(
&mut self,
arg_num: usize,
capability: Option<Capability>,
line_num: usize,
line_pos: usize,
) -> Result<(), CompileError> {
if arg_num > 0 {
if let Some(param) = self.param_check.get_mut(arg_num - 1) {
if !*param {
*param = true;
} else {
return Err(CompileError {
line_num,
line_pos,
error_type: ErrorType::DuplicatedParameter,
});
}
} else {
#[cfg(test)]
panic!("Argument out of range {arg_num}");
}
}
if let Some(capability) = capability {
if !self.has_capability(&capability) {
return Err(CompileError {
line_num,
line_pos,
error_type: ErrorType::UndeclaredCapability(capability),
});
}
}
Ok(())
}
pub(crate) fn validate_match(
&mut self,
match_type: &MatchType,
key_list: &mut [Value],
) -> Result<(), CompileError> {
if matches!(match_type, MatchType::Regex(_)) {
for key in key_list {
if let Value::Text(expr) = key {
match fancy_regex::Regex::new(expr) {
Ok(regex) => {
*key = Value::Regex(Regex {
regex,
expr: std::mem::take(expr),
});
}
Err(err) => {
return Err(self
.tokens
.unwrap_next()?
.custom(ErrorType::InvalidRegex(format!("{expr}: {err}"))));
}
}
}
}
}
Ok(())
}
}
impl Capability {
pub fn parse(capability: &str) -> Capability {
if let Some(capability) = CAPABILITIES.get(capability) {
capability.clone()
} else if let Some(comparator) = capability.strip_prefix("comparator-") {
Capability::Comparator(Comparator::Other(comparator.to_string()))
} else {
Capability::Other(capability.to_string())
}
}
pub fn all() -> &'static [Capability] {
&[
Capability::Envelope,
Capability::EnvelopeDsn,
Capability::EnvelopeDeliverBy,
Capability::FileInto,
Capability::EncodedCharacter,
Capability::Comparator(Comparator::Elbonia),
Capability::Comparator(Comparator::AsciiCaseMap),
Capability::Comparator(Comparator::AsciiNumeric),
Capability::Comparator(Comparator::Octet),
Capability::Body,
Capability::Convert,
Capability::Copy,
Capability::Relational,
Capability::Date,
Capability::Index,
Capability::Duplicate,
Capability::Variables,
Capability::EditHeader,
Capability::ForEveryPart,
Capability::Mime,
Capability::Replace,
Capability::Enclose,
Capability::ExtractText,
Capability::Enotify,
Capability::RedirectDsn,
Capability::RedirectDeliverBy,
Capability::Environment,
Capability::Reject,
Capability::Ereject,
Capability::ExtLists,
Capability::SubAddress,
Capability::Vacation,
Capability::VacationSeconds,
Capability::Fcc,
Capability::Mailbox,
Capability::MailboxId,
Capability::MboxMetadata,
Capability::ServerMetadata,
Capability::SpecialUse,
Capability::Imap4Flags,
Capability::Ihave,
Capability::ImapSieve,
Capability::Include,
Capability::Regex,
Capability::SpamTest,
Capability::SpamTestPlus,
Capability::VirusTest,
]
}
}
static RELATIONAL: phf::Map<&'static str, RelationalMatch> = phf_map! {
"gt" => RelationalMatch::Gt,
"ge" => RelationalMatch::Ge,
"lt" => RelationalMatch::Lt,
"le" => RelationalMatch::Le,
"eq" => RelationalMatch::Eq,
"ne" => RelationalMatch::Ne,
};
static COMPARATOR: phf::Map<&'static str, Comparator> = phf_map! {
"i;octet" => Comparator::Octet,
"i;ascii-casemap" => Comparator::AsciiCaseMap,
"i;ascii-numeric" => Comparator::AsciiNumeric,
};
impl Invalid {
pub fn name(&self) -> &str {
&self.name
}
pub fn line_num(&self) -> usize {
self.line_num
}
pub fn line_pos(&self) -> usize {
self.line_pos
}
}
impl From<&str> for Capability {
fn from(value: &str) -> Self {
Capability::parse(value)
}
}
impl From<String> for Capability {
fn from(value: String) -> Self {
Capability::parse(&value)
}
}
impl Display for Capability {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Capability::Envelope => f.write_str("envelope"),
Capability::EnvelopeDsn => f.write_str("envelope-dsn"),
Capability::EnvelopeDeliverBy => f.write_str("envelope-deliverby"),
Capability::FileInto => f.write_str("fileinto"),
Capability::EncodedCharacter => f.write_str("encoded-character"),
Capability::Comparator(Comparator::Elbonia) => f.write_str("comparator-elbonia"),
Capability::Comparator(Comparator::Octet) => f.write_str("comparator-i;octet"),
Capability::Comparator(Comparator::AsciiCaseMap) => {
f.write_str("comparator-i;ascii-casemap")
}
Capability::Comparator(Comparator::AsciiNumeric) => {
f.write_str("comparator-i;ascii-numeric")
}
Capability::Comparator(Comparator::Other(comparator)) => f.write_str(comparator),
Capability::Body => f.write_str("body"),
Capability::Convert => f.write_str("convert"),
Capability::Copy => f.write_str("copy"),
Capability::Relational => f.write_str("relational"),
Capability::Date => f.write_str("date"),
Capability::Index => f.write_str("index"),
Capability::Duplicate => f.write_str("duplicate"),
Capability::Variables => f.write_str("variables"),
Capability::EditHeader => f.write_str("editheader"),
Capability::ForEveryPart => f.write_str("foreverypart"),
Capability::Mime => f.write_str("mime"),
Capability::Replace => f.write_str("replace"),
Capability::Enclose => f.write_str("enclose"),
Capability::ExtractText => f.write_str("extracttext"),
Capability::Enotify => f.write_str("enotify"),
Capability::RedirectDsn => f.write_str("redirect-dsn"),
Capability::RedirectDeliverBy => f.write_str("redirect-deliverby"),
Capability::Environment => f.write_str("environment"),
Capability::Reject => f.write_str("reject"),
Capability::Ereject => f.write_str("ereject"),
Capability::ExtLists => f.write_str("extlists"),
Capability::SubAddress => f.write_str("subaddress"),
Capability::Vacation => f.write_str("vacation"),
Capability::VacationSeconds => f.write_str("vacation-seconds"),
Capability::Fcc => f.write_str("fcc"),
Capability::Mailbox => f.write_str("mailbox"),
Capability::MailboxId => f.write_str("mailboxid"),
Capability::MboxMetadata => f.write_str("mboxmetadata"),
Capability::ServerMetadata => f.write_str("servermetadata"),
Capability::SpecialUse => f.write_str("special-use"),
Capability::Imap4Flags => f.write_str("imap4flags"),
Capability::Ihave => f.write_str("ihave"),
Capability::ImapSieve => f.write_str("imapsieve"),
Capability::Include => f.write_str("include"),
Capability::Regex => f.write_str("regex"),
Capability::SpamTest => f.write_str("spamtest"),
Capability::SpamTestPlus => f.write_str("spamtestplus"),
Capability::VirusTest => f.write_str("virustest"),
Capability::Plugins => f.write_str("vnd.stalwart.plugins"),
Capability::ForEveryLine => f.write_str("vnd.stalwart.foreveryline"),
Capability::Eval => f.write_str("vnd.stalwart.eval"),
Capability::Other(capability) => f.write_str(capability),
}
}
}
static CAPABILITIES: phf::Map<&'static str, Capability> = phf_map! {
"envelope" => Capability::Envelope,
"envelope-dsn" => Capability::EnvelopeDsn,
"envelope-deliverby" => Capability::EnvelopeDeliverBy,
"fileinto" => Capability::FileInto,
"encoded-character" => Capability::EncodedCharacter,
"comparator-elbonia" => Capability::Comparator(Comparator::Elbonia),
"comparator-i;octet" => Capability::Comparator(Comparator::Octet),
"comparator-i;ascii-casemap" => Capability::Comparator(Comparator::AsciiCaseMap),
"comparator-i;ascii-numeric" => Capability::Comparator(Comparator::AsciiNumeric),
"body" => Capability::Body,
"convert" => Capability::Convert,
"copy" => Capability::Copy,
"relational" => Capability::Relational,
"date" => Capability::Date,
"index" => Capability::Index,
"duplicate" => Capability::Duplicate,
"variables" => Capability::Variables,
"editheader" => Capability::EditHeader,
"foreverypart" => Capability::ForEveryPart,
"mime" => Capability::Mime,
"replace" => Capability::Replace,
"enclose" => Capability::Enclose,
"extracttext" => Capability::ExtractText,
"enotify" => Capability::Enotify,
"redirect-dsn" => Capability::RedirectDsn,
"redirect-deliverby" => Capability::RedirectDeliverBy,
"environment" => Capability::Environment,
"reject" => Capability::Reject,
"ereject" => Capability::Ereject,
"extlists" => Capability::ExtLists,
"subaddress" => Capability::SubAddress,
"vacation" => Capability::Vacation,
"vacation-seconds" => Capability::VacationSeconds,
"fcc" => Capability::Fcc,
"mailbox" => Capability::Mailbox,
"mailboxid" => Capability::MailboxId,
"mboxmetadata" => Capability::MboxMetadata,
"servermetadata" => Capability::ServerMetadata,
"special-use" => Capability::SpecialUse,
"imap4flags" => Capability::Imap4Flags,
"ihave" => Capability::Ihave,
"imapsieve" => Capability::ImapSieve,
"include" => Capability::Include,
"regex" => Capability::Regex,
"spamtest" => Capability::SpamTest,
"spamtestplus" => Capability::SpamTestPlus,
"virustest" => Capability::VirusTest,
// Extensions
"vnd.stalwart.plugins" => Capability::Plugins,
"vnd.stalwart.foreveryline" => Capability::ForEveryLine,
"vnd.stalwart.eval" => Capability::Eval,
};

@ -0,0 +1,703 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
lexer::{tokenizer::TokenInfo, word::Word, Token},
CompileError, ErrorType,
};
use super::{
actions::{action_convert::Convert, action_vacation::TestVacation},
expr::{parser::ExpressionParser, tokenizer::Tokenizer, Expression},
instruction::{CompilerState, Instruction},
tests::{
test_address::TestAddress,
test_body::TestBody,
test_date::{TestCurrentDate, TestDate},
test_duplicate::TestDuplicate,
test_envelope::TestEnvelope,
test_exists::TestExists,
test_extlists::TestValidExtList,
test_hasflag::TestHasFlag,
test_header::TestHeader,
test_ihave::TestIhave,
test_mailbox::{TestMailboxExists, TestMetadata, TestMetadataExists},
test_mailboxid::TestMailboxIdExists,
test_notify::{TestNotifyMethodCapability, TestValidNotifyMethod},
test_plugin::Plugin,
test_size::TestSize,
test_spamtest::{TestSpamTest, TestVirusTest},
test_specialuse::TestSpecialUseExists,
test_string::TestString,
},
Capability, Invalid,
};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum Test {
True,
False,
Address(TestAddress),
Envelope(TestEnvelope),
Exists(TestExists),
Header(TestHeader),
Size(TestSize),
Invalid(Invalid),
// RFC 5173
Body(TestBody),
// RFC 6558
Convert(Convert),
// RFC 5260
Date(TestDate),
CurrentDate(TestCurrentDate),
// RFC 7352
Duplicate(TestDuplicate),
// RFC 5229 & RFC 5183
String(TestString),
Environment(TestString),
// RFC 5435
NotifyMethodCapability(TestNotifyMethodCapability),
ValidNotifyMethod(TestValidNotifyMethod),
// RFC 6134
ValidExtList(TestValidExtList),
// RFC 5463
Ihave(TestIhave),
// RFC 5232
HasFlag(TestHasFlag),
// RFC 5490
MailboxExists(TestMailboxExists),
Metadata(TestMetadata),
MetadataExists(TestMetadataExists),
// RFC 9042
MailboxIdExists(TestMailboxIdExists),
// RFC 5235
SpamTest(TestSpamTest),
VirusTest(TestVirusTest),
// RFC 8579
SpecialUseExists(TestSpecialUseExists),
// RFC 5230
Vacation(TestVacation),
// Stalwart proprietary
EvalExpression(EvalExpression),
Plugin(Plugin),
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct EvalExpression {
pub expr: Vec<Expression>,
pub is_not: bool,
}
#[derive(Debug)]
struct Block {
is_all: bool,
is_not: bool,
p_count: u32,
jmps: Vec<usize>,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test(&mut self) -> Result<(), CompileError> {
let mut block_stack: Vec<Block> = Vec::new();
let mut block = Block {
is_all: false,
is_not: false,
p_count: 0,
jmps: Vec::new(),
};
let mut is_not = false;
loop {
let token_info = self.tokens.unwrap_next()?;
self.reset_param_check();
let test = match token_info.token {
Token::Comma
if !block_stack.is_empty()
&& matches!(self.instructions.last(), Some(Instruction::Test(_)))
&& matches!(
self.tokens.peek(),
Some(Ok(TokenInfo {
token: Token::Identifier(_) | Token::Unknown(_),
..
}))
) =>
{
is_not = block.is_not;
block.jmps.push(self.instructions.len());
self.instructions.push(if block.is_all {
Instruction::Jz(usize::MAX)
} else {
Instruction::Jnz(usize::MAX)
});
continue;
}
Token::ParenthesisOpen => {
block.p_count += 1;
continue;
}
Token::ParenthesisClose => {
if block.p_count > 0 {
block.p_count -= 1;
continue;
} else if let Some(prev_block) = block_stack.pop() {
let cur_pos = self.instructions.len();
for jmp_pos in block.jmps {
if let Instruction::Jnz(jmp_pos) | Instruction::Jz(jmp_pos) =
&mut self.instructions[jmp_pos]
{
*jmp_pos = cur_pos;
} else {
debug_assert!(false, "This should not have happened")
}
}
block = prev_block;
is_not = block.is_not;
if block_stack.is_empty() {
break;
} else {
continue;
}
} else {
return Err(token_info.expected("test name"));
}
}
Token::Identifier(Word::Not) => {
if !matches!(
self.tokens.peek(),
Some(Ok(TokenInfo {
token: Token::Identifier(_) | Token::Unknown(_),
..
}))
) {
return Err(token_info.expected("test name"));
}
is_not = !is_not;
continue;
}
Token::Identifier(word @ (Word::AnyOf | Word::AllOf)) => {
if block_stack.len() < self.tokens.compiler.max_nested_tests {
self.tokens.expect_token(Token::ParenthesisOpen)?;
block_stack.push(block);
let (is_all, block_is_not) = if word == Word::AllOf {
if !is_not {
(true, false)
} else {
(false, true)
}
} else if !is_not {
(false, false)
} else {
(true, true)
};
block = Block {
is_all,
is_not: block_is_not,
p_count: 0,
jmps: Vec::new(),
};
is_not = block_is_not;
continue;
} else {
return Err(CompileError {
line_num: token_info.line_num,
line_pos: token_info.line_pos,
error_type: ErrorType::TooManyNestedTests,
});
}
}
Token::Identifier(Word::True) => {
if !is_not {
Test::True
} else {
is_not = false;
Test::False
}
}
Token::Identifier(Word::False) => {
if !is_not {
Test::False
} else {
is_not = false;
Test::True
}
}
Token::Identifier(Word::Address) => self.parse_test_address()?,
Token::Identifier(Word::Envelope) => {
self.validate_argument(
0,
Capability::Envelope.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_envelope()?
}
Token::Identifier(Word::Header) => self.parse_test_header()?,
Token::Identifier(Word::Size) => self.parse_test_size()?,
Token::Identifier(Word::Exists) => self.parse_test_exists()?,
// RFC 5173
Token::Identifier(Word::Body) => {
self.validate_argument(
0,
Capability::Body.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_body()?
}
// RFC 6558
Token::Identifier(Word::Convert) => {
self.validate_argument(
0,
Capability::Convert.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_convert()?
}
// RFC 5260
Token::Identifier(Word::Date) => {
self.validate_argument(
0,
Capability::Date.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_date()?
}
Token::Identifier(Word::CurrentDate) => {
self.validate_argument(
0,
Capability::Date.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_currentdate()?
}
// RFC 7352
Token::Identifier(Word::Duplicate) => {
self.validate_argument(
0,
Capability::Duplicate.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_duplicate()?
}
// RFC 5229
Token::Identifier(Word::String) => {
self.validate_argument(
0,
Capability::Variables.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_string()?
}
// RFC 5435
Token::Identifier(Word::NotifyMethodCapability) => {
self.validate_argument(
0,
Capability::Enotify.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_notify_method_capability()?
}
Token::Identifier(Word::ValidNotifyMethod) => {
self.validate_argument(
0,
Capability::Enotify.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_valid_notify_method()?
}
// RFC 5183
Token::Identifier(Word::Environment) => {
self.validate_argument(
0,
Capability::Environment.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_environment()?
}
// RFC 6134
Token::Identifier(Word::ValidExtList) => {
self.validate_argument(
0,
Capability::ExtLists.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_valid_ext_list()?
}
// RFC 5463
Token::Identifier(Word::Ihave) => {
self.validate_argument(
0,
Capability::Ihave.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_ihave()?
}
// RFC 5232
Token::Identifier(Word::HasFlag) => {
self.validate_argument(
0,
Capability::Imap4Flags.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_hasflag()?
}
// RFC 5490
Token::Identifier(Word::MailboxExists) => {
self.validate_argument(
0,
Capability::Mailbox.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_mailboxexists()?
}
Token::Identifier(Word::Metadata) => {
self.validate_argument(
0,
Capability::MboxMetadata.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_metadata()?
}
Token::Identifier(Word::MetadataExists) => {
self.validate_argument(
0,
Capability::MboxMetadata.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_metadataexists()?
}
Token::Identifier(Word::ServerMetadata) => {
self.validate_argument(
0,
Capability::ServerMetadata.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_servermetadata()?
}
Token::Identifier(Word::ServerMetadataExists) => {
self.validate_argument(
0,
Capability::ServerMetadata.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_servermetadataexists()?
}
// RFC 9042
Token::Identifier(Word::MailboxIdExists) => {
self.validate_argument(
0,
Capability::MailboxId.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_mailboxidexists()?
}
// RFC 5235
Token::Identifier(Word::SpamTest) => {
self.validate_argument(
0,
Capability::SpamTest.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_spamtest()?
}
Token::Identifier(Word::VirusTest) => {
self.validate_argument(
0,
Capability::VirusTest.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_virustest()?
}
// RFC 8579
Token::Identifier(Word::SpecialUseExists) => {
self.validate_argument(
0,
Capability::SpecialUse.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_specialuseexists()?
}
Token::Identifier(Word::Eval) => {
self.validate_argument(
0,
Capability::Eval.into(),
token_info.line_num,
token_info.line_pos,
)?;
let mut next_token = self.tokens.unwrap_next()?;
let expr = match next_token.token {
Token::StringConstant(s) => s.into_string().into_bytes(),
Token::StringVariable(s) => s,
_ => return Err(next_token.expected("string")),
};
match ExpressionParser::from_tokenizer(Tokenizer::from_iter(
expr.iter().enumerate().peekable(),
|var_name, maybe_namespace| {
self.parse_expr_fnc_or_var(var_name, maybe_namespace)
},
))
.parse()
{
Ok(parser) => Test::EvalExpression(EvalExpression {
expr: parser.output,
is_not: false,
}),
Err(err) => {
let err = ErrorType::InvalidExpression(format!(
"{}: {}",
std::str::from_utf8(&expr).unwrap_or_default(),
err
));
next_token.token = Token::StringVariable(expr);
return Err(next_token.custom(err));
}
}
}
Token::Identifier(word) => {
self.ignore_test()?;
Test::Invalid(Invalid {
name: word.to_string(),
line_num: token_info.line_num,
line_pos: token_info.line_pos,
})
}
#[cfg(test)]
Token::Unknown(name) if name.contains("test") => {
use crate::sieve::compiler::Value;
let mut arguments = Vec::new();
arguments.push(crate::sieve::PluginArgument::Text(Value::Text(name)));
while !matches!(
self.tokens.peek().map(|r| r.map(|t| &t.token)),
Some(Ok(Token::Comma
| Token::ParenthesisClose
| Token::CurlyOpen))
) {
arguments.push(crate::sieve::PluginArgument::Text(
match self.tokens.unwrap_next()?.token {
Token::StringConstant(s) => Value::from(s),
Token::StringVariable(s) => self
.tokenize_string(&s, true)
.map_err(|error_type| CompileError {
line_num: 0,
line_pos: 0,
error_type,
})?,
Token::Number(n) => {
Value::Number(crate::sieve::compiler::Number::Integer(n as i64))
}
Token::Identifier(s) => Value::Text(s.to_string()),
Token::Tag(s) => Value::Text(format!(":{s}")),
Token::Unknown(s) => Value::Text(s),
other => panic!("Invalid test param {other:?}"),
},
));
}
Test::Plugin(Plugin {
id: u32::MAX,
arguments,
is_not: false,
})
}
Token::Unknown(name) => {
if let Some(schema) = self.compiler.plugins.get(&name) {
self.validate_argument(
0,
Capability::Plugins.into(),
token_info.line_num,
token_info.line_pos,
)?;
self.parse_test_plugin(schema)?
} else {
self.ignore_test()?;
Test::Invalid(Invalid {
name,
line_num: token_info.line_num,
line_pos: token_info.line_pos,
})
}
}
_ => return Err(token_info.expected("test name")),
};
while block.p_count > 0 {
self.tokens.expect_token(Token::ParenthesisClose)?;
block.p_count -= 1;
}
self.instructions.push(Instruction::Test(if !is_not {
test
} else {
test.set_not()
}));
if block_stack.is_empty() {
break;
}
}
self.instructions.push(Instruction::Jz(usize::MAX));
Ok(())
}
}
impl Test {
pub fn set_not(mut self) -> Self {
match &mut self {
Test::True => return Test::False,
Test::False => return Test::True,
Test::Address(op) => {
op.is_not = true;
}
Test::Envelope(op) => {
op.is_not = true;
}
Test::Exists(op) => {
op.is_not = true;
}
Test::Header(op) => {
op.is_not = true;
}
Test::Size(op) => {
op.is_not = true;
}
Test::Body(op) => {
op.is_not = true;
}
Test::Convert(op) => {
op.is_not = true;
}
Test::Date(op) => {
op.is_not = true;
}
Test::CurrentDate(op) => {
op.is_not = true;
}
Test::Duplicate(op) => {
op.is_not = true;
}
Test::String(op) | Test::Environment(op) => {
op.is_not = true;
}
Test::NotifyMethodCapability(op) => {
op.is_not = true;
}
Test::ValidNotifyMethod(op) => {
op.is_not = true;
}
Test::ValidExtList(op) => {
op.is_not = true;
}
Test::Ihave(op) => {
op.is_not = true;
}
Test::HasFlag(op) => {
op.is_not = true;
}
Test::MailboxExists(op) => {
op.is_not = true;
}
Test::Metadata(op) => {
op.is_not = true;
}
Test::MetadataExists(op) => {
op.is_not = true;
}
Test::MailboxIdExists(op) => {
op.is_not = true;
}
Test::SpamTest(op) => {
op.is_not = true;
}
Test::VirusTest(op) => {
op.is_not = true;
}
Test::SpecialUseExists(op) => {
op.is_not = true;
}
Test::Plugin(op) => {
op.is_not = true;
}
Test::EvalExpression(op) => {
op.is_not = true;
}
Test::Vacation(_) | Test::Invalid(_) => {}
}
self
}
}

@ -0,0 +1,42 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
pub mod test_address;
pub mod test_body;
pub mod test_date;
pub mod test_duplicate;
pub mod test_envelope;
pub mod test_environment;
pub mod test_exists;
pub mod test_extlists;
pub mod test_hasflag;
pub mod test_header;
pub mod test_ihave;
pub mod test_mailbox;
pub mod test_mailboxid;
pub mod test_notify;
pub mod test_plugin;
pub mod test_size;
pub mod test_spamtest;
pub mod test_specialuse;
pub mod test_string;

@ -0,0 +1,186 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{instruction::CompilerState, test::Test, Capability, Comparator},
lexer::{word::Word, Token},
CompileError, Value,
};
use crate::sieve::compiler::grammar::{AddressPart, MatchType};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestAddress {
pub header_list: Vec<Value>,
pub key_list: Vec<Value>,
pub address_part: AddressPart,
pub match_type: MatchType,
pub comparator: Comparator,
pub index: Option<i32>,
pub mime_anychild: bool,
pub is_not: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_address(&mut self) -> Result<Test, CompileError> {
let mut address_part = AddressPart::All;
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut header_list = None;
let mut key_list;
let mut index = None;
let mut index_last = false;
let mut mime = false;
let mut mime_anychild = false;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::LocalPart
| Word::Domain
| Word::All
| Word::User
| Word::Detail
| Word::Name),
) => {
self.validate_argument(
1,
if matches!(word, Word::User | Word::Detail) {
Capability::SubAddress.into()
} else {
None
},
token_info.line_num,
token_info.line_pos,
)?;
address_part = word.into();
}
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex
| Word::List),
) => {
self.validate_argument(
2,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(3, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
Token::Tag(Word::Index) => {
self.validate_argument(
4,
Capability::Index.into(),
token_info.line_num,
token_info.line_pos,
)?;
index = (self.tokens.expect_number(u16::MAX as usize)? as i32).into();
}
Token::Tag(Word::Last) => {
self.validate_argument(
5,
Capability::Index.into(),
token_info.line_num,
token_info.line_pos,
)?;
index_last = true;
}
Token::Tag(Word::Mime) => {
self.validate_argument(
6,
Capability::Mime.into(),
token_info.line_num,
token_info.line_pos,
)?;
mime = true;
}
Token::Tag(Word::AnyChild) => {
self.validate_argument(
7,
Capability::Mime.into(),
token_info.line_num,
token_info.line_pos,
)?;
mime_anychild = true;
}
_ => {
if header_list.is_none() {
header_list = self.parse_strings_token(token_info)?.into();
} else {
key_list = self.parse_strings_token(token_info)?;
break;
}
}
}
}
if !mime && mime_anychild {
return Err(self.tokens.unwrap_next()?.missing_tag(":mime"));
}
self.validate_match(&match_type, &mut key_list)?;
Ok(Test::Address(TestAddress {
header_list: header_list.unwrap(),
key_list,
address_part,
match_type,
comparator,
index: if index_last { index.map(|i| -i) } else { index },
mime_anychild,
is_not: false,
}))
}
}
impl From<Word> for AddressPart {
fn from(word: Word) -> Self {
match word {
Word::LocalPart => AddressPart::LocalPart,
Word::Domain => AddressPart::Domain,
Word::All => AddressPart::All,
Word::User => AddressPart::User,
Word::Detail => AddressPart::Detail,
Word::Name => AddressPart::Name,
_ => unreachable!(),
}
}
}

@ -0,0 +1,121 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{instruction::CompilerState, Capability, Comparator},
lexer::{word::Word, Token},
CompileError, Value,
};
use crate::sieve::compiler::grammar::{test::Test, MatchType};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestBody {
pub key_list: Vec<Value>,
pub body_transform: BodyTransform,
pub match_type: MatchType,
pub comparator: Comparator,
pub include_subject: bool,
pub is_not: bool,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum BodyTransform {
Raw,
Content(Vec<Value>),
Text,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_body(&mut self) -> Result<Test, CompileError> {
let mut body_transform = BodyTransform::Text;
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut key_list;
let mut include_subject = false;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(Word::Raw) => {
self.validate_argument(1, None, token_info.line_num, token_info.line_pos)?;
body_transform = BodyTransform::Raw;
}
Token::Tag(Word::Text) => {
self.validate_argument(1, None, token_info.line_num, token_info.line_pos)?;
body_transform = BodyTransform::Text;
}
Token::Tag(Word::Content) => {
self.validate_argument(1, None, token_info.line_num, token_info.line_pos)?;
body_transform = BodyTransform::Content(self.parse_strings(false)?);
}
Token::Tag(Word::Subject) => {
self.validate_argument(4, None, token_info.line_num, token_info.line_pos)?;
include_subject = true;
}
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex),
) => {
self.validate_argument(
2,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(3, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
_ => {
key_list = self.parse_strings_token(token_info)?;
break;
}
}
}
self.validate_match(&match_type, &mut key_list)?;
Ok(Test::Body(TestBody {
key_list,
body_transform,
match_type,
comparator,
include_subject,
is_not: false,
}))
}
}

@ -0,0 +1,354 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use mail_parser::HeaderName;
use phf::phf_map;
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{instruction::CompilerState, Capability, Comparator},
lexer::{word::Word, StringConstant, Token},
CompileError, ErrorType, Number, Value,
};
use crate::sieve::compiler::grammar::{test::Test, MatchType};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestDate {
pub header_name: Value,
pub key_list: Vec<Value>,
pub match_type: MatchType,
pub comparator: Comparator,
pub index: Option<i32>,
pub zone: Zone,
pub date_part: DatePart,
pub mime_anychild: bool,
pub is_not: bool,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestCurrentDate {
pub zone: Option<i64>,
pub match_type: MatchType,
pub comparator: Comparator,
pub date_part: DatePart,
pub key_list: Vec<Value>,
pub is_not: bool,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum Zone {
Time(i64),
Original,
Local,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum DatePart {
Year,
Month,
Day,
Date,
Julian,
Hour,
Minute,
Second,
Time,
Iso8601,
Std11,
Zone,
Weekday,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_date(&mut self) -> Result<Test, CompileError> {
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut header_name = None;
let mut key_list;
let mut index = None;
let mut index_last = false;
let mut zone = Zone::Local;
let mut date_part = None;
let mut mime = false;
let mut mime_anychild = false;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex
| Word::List),
) => {
self.validate_argument(
1,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
Token::Tag(Word::Index) => {
self.validate_argument(
3,
Capability::Index.into(),
token_info.line_num,
token_info.line_pos,
)?;
index = (self.tokens.expect_number(u16::MAX as usize)? as i32).into();
}
Token::Tag(Word::Last) => {
self.validate_argument(
4,
Capability::Index.into(),
token_info.line_num,
token_info.line_pos,
)?;
index_last = true;
}
Token::Tag(Word::Mime) => {
self.validate_argument(
5,
Capability::Mime.into(),
token_info.line_num,
token_info.line_pos,
)?;
mime = true;
}
Token::Tag(Word::AnyChild) => {
self.validate_argument(
6,
Capability::Mime.into(),
token_info.line_num,
token_info.line_pos,
)?;
mime_anychild = true;
}
Token::Tag(Word::OriginalZone) => {
self.validate_argument(7, None, token_info.line_num, token_info.line_pos)?;
zone = Zone::Original;
}
Token::Tag(Word::Zone) => {
self.validate_argument(7, None, token_info.line_num, token_info.line_pos)?;
zone = Zone::Time(self.parse_timezone()?);
}
_ => {
if header_name.is_none() {
let header = self.parse_string_token(token_info)?;
if let Value::Text(header_name) = &header {
if HeaderName::parse(header_name).is_none() {
return Err(self
.tokens
.unwrap_next()?
.custom(ErrorType::InvalidHeaderName));
}
}
header_name = header.into();
} else if date_part.is_none() {
if let Token::StringConstant(string) = &token_info.token {
if let Some(date_part_) =
DATE_PART.get(&string.to_string().to_ascii_lowercase())
{
date_part = (*date_part_).into();
continue;
}
}
return Err(token_info.expected("valid date part"));
} else {
key_list = self.parse_strings_token(token_info)?;
break;
}
}
}
}
if !mime && mime_anychild {
return Err(self.tokens.unwrap_next()?.missing_tag(":mime"));
}
self.validate_match(&match_type, &mut key_list)?;
Ok(Test::Date(TestDate {
header_name: header_name.unwrap(),
key_list,
date_part: date_part.unwrap(),
match_type,
comparator,
index: if index_last { index.map(|i| -i) } else { index },
zone,
mime_anychild,
is_not: false,
}))
}
pub(crate) fn parse_test_currentdate(&mut self) -> Result<Test, CompileError> {
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut key_list;
let mut zone = None;
let mut date_part = None;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex
| Word::List),
) => {
self.validate_argument(
1,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
Token::Tag(Word::Zone) => {
self.validate_argument(3, None, token_info.line_num, token_info.line_pos)?;
zone = self.parse_timezone()?.into();
}
_ => {
if date_part.is_none() {
if let Token::StringConstant(string) = &token_info.token {
if let Some(date_part_) =
DATE_PART.get(&string.to_string().to_ascii_lowercase())
{
date_part = (*date_part_).into();
continue;
}
}
return Err(token_info.expected("valid date part"));
} else {
key_list = self.parse_strings_token(token_info)?;
break;
}
}
}
}
self.validate_match(&match_type, &mut key_list)?;
Ok(Test::CurrentDate(TestCurrentDate {
key_list,
date_part: date_part.unwrap(),
match_type,
comparator,
zone,
is_not: false,
}))
}
pub(crate) fn parse_timezone(&mut self) -> Result<i64, CompileError> {
let token_info = self.tokens.unwrap_next()?;
if let Token::StringConstant(value) = &token_info.token {
let timezone = match value {
StringConstant::String(value) => value.parse::<i64>().unwrap_or(i64::MAX),
StringConstant::Number(Number::Integer(n)) => *n,
StringConstant::Number(Number::Float(n)) => *n as i64,
};
return match timezone {
0..=1400 => Ok((timezone / 100 * 3600) + (timezone % 100 * 60)),
-1200..=-1 => Ok((timezone / 100 * 3600) - (-timezone % 100 * 60)),
_ => Err(token_info.expected("invalid timezone")),
};
}
Err(token_info.expected("string containing time zone"))
}
}
/*
"year" => the year, "0000" .. "9999".
"month" => the month, "01" .. "12".
"day" => the day, "01" .. "31".
"date" => the date in "yyyy-mm-dd" format.
"julian" => the Modified Julian Day, that is, the date
expressed as an integer number of days since
00:00 UTC on November 17, 1858 (using the Gregorian
calendar). This corresponds to the regular
Julian Day minus 2400000.5. Sample routines to
convert to and from modified Julian dates are
given in Appendix A.
"hour" => the hour, "00" .. "23".
"minute" => the minute, "00" .. "59".
"second" => the second, "00" .. "60".
"time" => the time in "hh:mm:ss" format.
"iso8601" => the date and time in restricted ISO 8601 format.
"std11" => the date and time in a format appropriate
for use in a Date: header field [RFC2822].
"zone" => the time zone in use. If the user specified a
time zone with ":zone", "zone" will
contain that value. If :originalzone is specified
this value will be the original zone specified
in the date-time value. If neither argument is
specified the value will be the server's default
time zone in offset format "+hhmm" or "-hhmm". An
offset of 0 (Zulu) always has a positive sign.
"weekday" => the day of the week expressed as an integer between
"0" and "6". "0" is Sunday, "1" is Monday, etc.
*/
static DATE_PART: phf::Map<&'static str, DatePart> = phf_map! {
"year" => DatePart::Year,
"month" => DatePart::Month,
"day" => DatePart::Day,
"date" => DatePart::Date,
"julian" => DatePart::Julian,
"hour" => DatePart::Hour,
"minute" => DatePart::Minute,
"second" => DatePart::Second,
"time" => DatePart::Time,
"iso8601" => DatePart::Iso8601,
"std11" => DatePart::Std11,
"zone" => DatePart::Zone,
"weekday" => DatePart::Weekday,
};

@ -0,0 +1,120 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use mail_parser::HeaderName;
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::instruction::{CompilerState, MapLocalVars},
lexer::{word::Word, Token},
CompileError, ErrorType, Value,
};
use crate::sieve::compiler::grammar::test::Test;
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestDuplicate {
pub handle: Option<Value>,
pub dup_match: DupMatch,
pub seconds: Option<u64>,
pub last: bool,
pub is_not: bool,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum DupMatch {
Header(Value),
UniqueId(Value),
Default,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_duplicate(&mut self) -> Result<Test, CompileError> {
let mut handle = None;
let mut dup_match = DupMatch::Default;
let mut seconds = None;
let mut last = false;
while let Some(token_info) = self.tokens.peek() {
let token_info = token_info?;
let line_num = token_info.line_num;
let line_pos = token_info.line_pos;
match token_info.token {
Token::Tag(Word::Handle) => {
self.validate_argument(1, None, line_num, line_pos)?;
self.tokens.next();
handle = self.parse_string()?.into();
}
Token::Tag(Word::Header) => {
self.validate_argument(2, None, line_num, line_pos)?;
self.tokens.next();
let header = self.parse_string()?;
if let Value::Text(header_name) = &header {
if HeaderName::parse(header_name).is_none() {
return Err(self
.tokens
.unwrap_next()?
.custom(ErrorType::InvalidHeaderName));
}
}
dup_match = DupMatch::Header(header);
}
Token::Tag(Word::UniqueId) => {
self.validate_argument(2, None, line_num, line_pos)?;
self.tokens.next();
dup_match = DupMatch::UniqueId(self.parse_string()?);
}
Token::Tag(Word::Seconds) => {
self.validate_argument(3, None, line_num, line_pos)?;
self.tokens.next();
seconds = (self.tokens.expect_number(u64::MAX as usize)? as u64).into();
}
Token::Tag(Word::Last) => {
self.validate_argument(4, None, line_num, line_pos)?;
self.tokens.next();
last = true;
}
_ => break,
}
}
Ok(Test::Duplicate(TestDuplicate {
handle,
dup_match,
seconds,
last,
is_not: false,
}))
}
}
impl MapLocalVars for DupMatch {
fn map_local_vars(&mut self, last_id: usize) {
match self {
DupMatch::Header(header) => header.map_local_vars(last_id),
DupMatch::UniqueId(unique_id) => unique_id.map_local_vars(last_id),
DupMatch::Default => {}
}
}
}

@ -0,0 +1,243 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use phf::phf_map;
use serde::{Deserialize, Serialize};
use crate::sieve::{
compiler::{
grammar::{instruction::CompilerState, Capability, Comparator},
lexer::{word::Word, Token},
CompileError, ErrorType, Value,
},
Envelope,
};
use crate::sieve::compiler::grammar::{test::Test, AddressPart, MatchType};
use std::convert::TryFrom;
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestEnvelope {
pub envelope_list: Vec<Envelope>,
pub key_list: Vec<Value>,
pub address_part: AddressPart,
pub match_type: MatchType,
pub comparator: Comparator,
pub zone: Option<i64>,
pub is_not: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_envelope(&mut self) -> Result<Test, CompileError> {
let mut address_part = AddressPart::All;
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut envelope_list = None;
let mut key_list;
let mut zone = None;
loop {
let mut token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::LocalPart | Word::Domain | Word::All | Word::User | Word::Detail),
) => {
self.validate_argument(
1,
if matches!(word, Word::User | Word::Detail) {
Capability::SubAddress.into()
} else {
None
},
token_info.line_num,
token_info.line_pos,
)?;
address_part = word.into();
}
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex
| Word::List),
) => {
self.validate_argument(
2,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(3, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
Token::Tag(Word::Zone) => {
self.validate_argument(
4,
Capability::EnvelopeDeliverBy.into(),
token_info.line_num,
token_info.line_pos,
)?;
zone = self.parse_timezone()?.into();
}
_ => {
if envelope_list.is_none() {
let mut envelopes = Vec::new();
let line_num = token_info.line_num;
let line_pos = token_info.line_pos;
match token_info.token {
Token::StringConstant(s) => match Envelope::try_from(s.into_string()) {
Ok(envelope) => {
envelopes.push(envelope);
}
Err(invalid) => {
token_info.token = Token::Comma;
return Err(
token_info.custom(ErrorType::InvalidEnvelope(invalid))
);
}
},
Token::BracketOpen => loop {
let mut token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::StringConstant(s) => {
match Envelope::try_from(s.into_string()) {
Ok(envelope) => {
if !envelopes.contains(&envelope) {
envelopes.push(envelope);
}
}
Err(invalid) => {
token_info.token = Token::Comma;
return Err(token_info
.custom(ErrorType::InvalidEnvelope(invalid)));
}
}
}
Token::Comma => (),
Token::BracketClose if !envelopes.is_empty() => break,
_ => return Err(token_info.expected("constant string")),
}
},
_ => return Err(token_info.expected("constant string")),
}
for envelope in &envelopes {
match envelope {
Envelope::ByTimeAbsolute
| Envelope::ByTimeRelative
| Envelope::ByMode
| Envelope::ByTrace => {
self.validate_argument(
0,
Capability::EnvelopeDeliverBy.into(),
line_num,
line_pos,
)?;
}
Envelope::Notify
| Envelope::Orcpt
| Envelope::Ret
| Envelope::Envid => {
self.validate_argument(
0,
Capability::EnvelopeDsn.into(),
line_num,
line_pos,
)?;
}
_ => (),
}
}
envelope_list = envelopes.into();
} else {
key_list = self.parse_strings_token(token_info)?;
break;
}
}
}
}
self.validate_match(&match_type, &mut key_list)?;
Ok(Test::Envelope(TestEnvelope {
envelope_list: envelope_list.unwrap(),
key_list,
address_part,
match_type,
comparator,
zone,
is_not: false,
}))
}
}
impl TryFrom<String> for Envelope {
type Error = String;
fn try_from(value: String) -> Result<Self, Self::Error> {
if let Some(envelope) = ENVELOPE.get(&value) {
Ok(*envelope)
} else {
Err(value)
}
}
}
impl<'x> TryFrom<&'x str> for Envelope {
type Error = &'x str;
fn try_from(value: &'x str) -> Result<Self, Self::Error> {
if let Some(envelope) = ENVELOPE.get(value) {
Ok(*envelope)
} else {
Err(value)
}
}
}
pub(crate) static ENVELOPE: phf::Map<&'static str, Envelope> = phf_map! {
"from" => Envelope::From,
"to" => Envelope::To,
"bytimeabsolute" => Envelope::ByTimeAbsolute,
"bytimerelative" => Envelope::ByTimeRelative,
"bymode" => Envelope::ByMode,
"bytrace" => Envelope::ByTrace,
"notify" => Envelope::Notify,
"orcpt" => Envelope::Orcpt,
"ret" => Envelope::Ret,
"envid" => Envelope::Envid,
};

@ -0,0 +1,97 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::compiler::{
grammar::{instruction::CompilerState, Capability, Comparator},
lexer::{word::Word, Token},
CompileError, Value, VariableType,
};
use crate::sieve::compiler::grammar::{test::Test, MatchType};
use super::test_string::TestString;
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_environment(&mut self) -> Result<Test, CompileError> {
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut name = None;
let mut key_list;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex),
) => {
self.validate_argument(
1,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
_ => {
if name.is_none() {
if let Token::StringConstant(s) = token_info.token {
name = Value::Variable(VariableType::Environment(
s.into_string().to_lowercase(),
))
.into();
} else {
return Err(token_info.expected("environment variable"));
}
} else {
key_list = self.parse_strings_token(token_info)?;
break;
}
}
}
}
self.validate_match(&match_type, &mut key_list)?;
Ok(Test::Environment(TestString {
source: vec![name.unwrap()],
key_list,
match_type,
comparator,
is_not: false,
}))
}
}

@ -0,0 +1,97 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use mail_parser::HeaderName;
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{instruction::CompilerState, Capability},
lexer::{word::Word, Token},
CompileError, ErrorType, Value,
};
use crate::sieve::compiler::grammar::test::Test;
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestExists {
pub header_names: Vec<Value>,
pub mime_anychild: bool,
pub is_not: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_exists(&mut self) -> Result<Test, CompileError> {
let mut header_names = None;
let mut mime = false;
let mut mime_anychild = false;
while header_names.is_none() {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(Word::Mime) => {
self.validate_argument(
1,
Capability::Mime.into(),
token_info.line_num,
token_info.line_pos,
)?;
mime = true;
}
Token::Tag(Word::AnyChild) => {
self.validate_argument(
2,
Capability::Mime.into(),
token_info.line_num,
token_info.line_pos,
)?;
mime_anychild = true;
}
_ => {
let headers = self.parse_strings_token(token_info)?;
for header in &headers {
if let Value::Text(header_name) = &header {
if HeaderName::parse(header_name).is_none() {
return Err(self
.tokens
.unwrap_next()?
.custom(ErrorType::InvalidHeaderName));
}
}
}
header_names = headers.into();
}
}
}
if !mime && mime_anychild {
return Err(self.tokens.unwrap_next()?.missing_tag(":mime"));
}
Ok(Test::Exists(TestExists {
header_names: header_names.unwrap(),
mime_anychild,
is_not: false,
}))
}
}

@ -0,0 +1,45 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::grammar::instruction::CompilerState;
use crate::sieve::compiler::CompileError;
use crate::sieve::compiler::Value;
use crate::sieve::compiler::grammar::test::Test;
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestValidExtList {
pub list_names: Vec<Value>,
pub is_not: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_valid_ext_list(&mut self) -> Result<Test, CompileError> {
Ok(Test::ValidExtList(TestValidExtList {
list_names: self.parse_strings(false)?,
is_not: false,
}))
}
}

@ -0,0 +1,158 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{instruction::CompilerState, Capability, Comparator},
lexer::{tokenizer::TokenInfo, word::Word, Token},
CompileError, ErrorType, Value, VariableType,
};
use crate::sieve::compiler::grammar::{test::Test, MatchType};
/*
Usage: hasflag [MATCH-TYPE] [COMPARATOR]
[<variable-list: string-list>]
<list-of-flags: string-list>
*/
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestHasFlag {
pub comparator: Comparator,
pub match_type: MatchType,
pub variable_list: Vec<VariableType>,
pub flags: Vec<Value>,
pub is_not: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_hasflag(&mut self) -> Result<Test, CompileError> {
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut is_local = false;
let mut maybe_variables;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex),
) => {
self.validate_argument(
1,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
Token::Tag(Word::Local) => {
is_local = true;
}
_ => {
maybe_variables = self.parse_strings_token(token_info)?;
break;
}
}
}
match self.tokens.peek() {
Some(Ok(TokenInfo {
token: Token::StringConstant(_) | Token::StringVariable(_) | Token::BracketOpen,
line_num,
line_pos,
})) => {
if !maybe_variables.is_empty() {
let line_num = *line_num;
let line_pos = *line_pos;
let mut variable_list = Vec::with_capacity(maybe_variables.len());
for variable in maybe_variables {
match variable {
Value::Text(var_name) => {
variable_list.push(
self.register_variable(var_name, is_local).map_err(
|error_type| CompileError {
line_num,
line_pos,
error_type,
},
)?,
);
}
_ => {
return Err(self
.tokens
.unwrap_next()?
.custom(ErrorType::ExpectedConstantString))
}
}
}
let mut flags = self.parse_strings(false)?;
self.validate_match(&match_type, &mut flags)?;
Ok(Test::HasFlag(TestHasFlag {
comparator,
match_type,
variable_list,
flags,
is_not: false,
}))
} else {
Err(self
.tokens
.unwrap_next()?
.custom(ErrorType::ExpectedConstantString))
}
}
_ => {
self.validate_match(&match_type, &mut maybe_variables)?;
Ok(Test::HasFlag(TestHasFlag {
comparator,
match_type,
variable_list: Vec::new(),
flags: maybe_variables,
is_not: false,
}))
}
}
}
}

@ -0,0 +1,191 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use mail_parser::HeaderName;
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{
actions::action_mime::MimeOpts,
instruction::{CompilerState, MapLocalVars},
Capability, Comparator,
},
lexer::{word::Word, Token},
CompileError, ErrorType, Value,
};
use crate::sieve::compiler::grammar::{test::Test, MatchType};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestHeader {
pub header_list: Vec<Value>,
pub key_list: Vec<Value>,
pub match_type: MatchType,
pub comparator: Comparator,
pub index: Option<i32>,
pub mime_opts: MimeOpts<Value>,
pub mime_anychild: bool,
pub is_not: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_header(&mut self) -> Result<Test, CompileError> {
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut header_list = None;
let mut key_list;
let mut index = None;
let mut index_last = false;
let mut mime = false;
let mut mime_opts = MimeOpts::None;
let mut mime_anychild = false;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex
| Word::List),
) => {
self.validate_argument(
1,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
Token::Tag(Word::Index) => {
self.validate_argument(
3,
Capability::Index.into(),
token_info.line_num,
token_info.line_pos,
)?;
index = (self.tokens.expect_number(u16::MAX as usize)? as i32).into();
}
Token::Tag(Word::Last) => {
self.validate_argument(
4,
Capability::Index.into(),
token_info.line_num,
token_info.line_pos,
)?;
index_last = true;
}
Token::Tag(Word::Mime) => {
self.validate_argument(
5,
Capability::Mime.into(),
token_info.line_num,
token_info.line_pos,
)?;
mime = true;
}
Token::Tag(Word::AnyChild) => {
self.validate_argument(
6,
Capability::Mime.into(),
token_info.line_num,
token_info.line_pos,
)?;
mime_anychild = true;
}
Token::Tag(
word @ (Word::Type | Word::Subtype | Word::ContentType | Word::Param),
) => {
self.validate_argument(
7,
Capability::Mime.into(),
token_info.line_num,
token_info.line_pos,
)?;
mime_opts = self.parse_mimeopts(word)?;
}
_ => {
if header_list.is_none() {
let headers = self.parse_strings_token(token_info)?;
for header in &headers {
if let Value::Text(header_name) = &header {
if HeaderName::parse(header_name).is_none() {
return Err(self
.tokens
.unwrap_next()?
.custom(ErrorType::InvalidHeaderName));
}
}
}
header_list = headers.into();
} else {
key_list = self.parse_strings_token(token_info)?;
break;
}
}
}
}
if !mime && (mime_anychild || mime_opts != MimeOpts::None) {
return Err(self.tokens.unwrap_next()?.missing_tag(":mime"));
}
self.validate_match(&match_type, &mut key_list)?;
Ok(Test::Header(TestHeader {
header_list: header_list.unwrap(),
key_list,
match_type,
comparator,
index: if index_last { index.map(|i| -i) } else { index },
mime_opts,
mime_anychild,
is_not: false,
}))
}
}
impl MapLocalVars for MimeOpts<Value> {
fn map_local_vars(&mut self, last_id: usize) {
if let MimeOpts::Param(value) = self {
value.map_local_vars(last_id)
}
}
}

@ -0,0 +1,63 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::grammar::instruction::{CompilerState, Instruction};
use crate::sieve::compiler::grammar::Capability;
use crate::sieve::compiler::CompileError;
use crate::sieve::compiler::Value;
use crate::sieve::compiler::grammar::test::Test;
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestIhave {
pub capabilities: Vec<Capability>,
pub is_not: bool,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct Error {
pub message: Value,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_ihave(&mut self) -> Result<Test, CompileError> {
Ok(Test::Ihave(TestIhave {
capabilities: self
.parse_static_strings()?
.into_iter()
.map(|n| n.into())
.collect(),
is_not: false,
}))
}
pub(crate) fn parse_error(&mut self) -> Result<(), CompileError> {
let cmd = Instruction::Error(Error {
message: self.parse_string()?,
});
self.instructions.push(cmd);
Ok(())
}
}

@ -0,0 +1,234 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::{
compiler::{
grammar::{
instruction::{CompilerState, MapLocalVars},
Capability, Comparator,
},
lexer::{word::Word, Token},
CompileError, Value,
},
Metadata,
};
use crate::sieve::compiler::grammar::{test::Test, MatchType};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestMailboxExists {
pub mailbox_names: Vec<Value>,
pub is_not: bool,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestMetadataExists {
pub mailbox: Option<Value>,
pub annotation_names: Vec<Value>,
pub is_not: bool,
}
/*
metadata [MATCH-TYPE] [COMPARATOR]
<mailbox: string>
<annotation-name: string> <key-list: string-list>
*/
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestMetadata {
pub match_type: MatchType,
pub comparator: Comparator,
pub medatata: Metadata<Value>,
pub key_list: Vec<Value>,
pub is_not: bool,
}
/*
servermetadata [MATCH-TYPE] [COMPARATOR]
<annotation-name: string> <key-list: string-list>
*/
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_mailboxexists(&mut self) -> Result<Test, CompileError> {
Ok(Test::MailboxExists(TestMailboxExists {
mailbox_names: self.parse_strings(false)?,
is_not: false,
}))
}
pub(crate) fn parse_test_metadataexists(&mut self) -> Result<Test, CompileError> {
Ok(Test::MetadataExists(TestMetadataExists {
mailbox: self.parse_string()?.into(),
annotation_names: self.parse_strings(false)?,
is_not: false,
}))
}
pub(crate) fn parse_test_servermetadataexists(&mut self) -> Result<Test, CompileError> {
Ok(Test::MetadataExists(TestMetadataExists {
mailbox: None,
annotation_names: self.parse_strings(false)?,
is_not: false,
}))
}
pub(crate) fn parse_test_metadata(&mut self) -> Result<Test, CompileError> {
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut mailbox = None;
let mut annotation_name = None;
let mut key_list: Vec<Value>;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex),
) => {
self.validate_argument(
1,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
_ => {
if mailbox.is_none() {
mailbox = self.parse_string_token(token_info)?.into();
} else if annotation_name.is_none() {
annotation_name = self.parse_string_token(token_info)?.into();
} else {
key_list = self.parse_strings_token(token_info)?;
break;
}
}
}
}
self.validate_match(&match_type, &mut key_list)?;
Ok(Test::Metadata(TestMetadata {
match_type,
comparator,
medatata: Metadata::Mailbox {
name: mailbox.unwrap(),
annotation: annotation_name.unwrap(),
},
key_list,
is_not: false,
}))
}
pub(crate) fn parse_test_servermetadata(&mut self) -> Result<Test, CompileError> {
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut annotation_name = None;
let mut key_list: Vec<Value>;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex),
) => {
self.validate_argument(
1,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
_ => {
if annotation_name.is_none() {
annotation_name = self.parse_string_token(token_info)?.into();
} else {
key_list = self.parse_strings_token(token_info)?;
break;
}
}
}
}
self.validate_match(&match_type, &mut key_list)?;
Ok(Test::Metadata(TestMetadata {
match_type,
comparator,
medatata: Metadata::Server {
annotation: annotation_name.unwrap(),
},
key_list,
is_not: false,
}))
}
}
impl MapLocalVars for Metadata<Value> {
fn map_local_vars(&mut self, last_id: usize) {
match self {
Metadata::Mailbox { name, annotation } => {
name.map_local_vars(last_id);
annotation.map_local_vars(last_id);
}
Metadata::Server { annotation } => {
annotation.map_local_vars(last_id);
}
}
}
}

@ -0,0 +1,45 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::grammar::instruction::CompilerState;
use crate::sieve::compiler::CompileError;
use crate::sieve::compiler::Value;
use crate::sieve::compiler::grammar::test::Test;
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestMailboxIdExists {
pub mailbox_ids: Vec<Value>,
pub is_not: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_mailboxidexists(&mut self) -> Result<Test, CompileError> {
Ok(Test::MailboxIdExists(TestMailboxIdExists {
mailbox_ids: self.parse_strings(false)?,
is_not: false,
}))
}
}

@ -0,0 +1,117 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{instruction::CompilerState, Capability, Comparator},
lexer::{word::Word, Token},
CompileError, Value,
};
use crate::sieve::compiler::grammar::{test::Test, MatchType};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestNotifyMethodCapability {
pub comparator: Comparator,
pub match_type: MatchType,
pub notification_uri: Value,
pub notification_capability: Value,
pub key_list: Vec<Value>,
pub is_not: bool,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestValidNotifyMethod {
pub notification_uris: Vec<Value>,
pub is_not: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_valid_notify_method(&mut self) -> Result<Test, CompileError> {
Ok(Test::ValidNotifyMethod(TestValidNotifyMethod {
notification_uris: self.parse_strings(false)?,
is_not: false,
}))
}
pub(crate) fn parse_test_notify_method_capability(&mut self) -> Result<Test, CompileError> {
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut notification_uri = None;
let mut notification_capability = None;
let mut key_list;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex),
) => {
self.validate_argument(
1,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
_ => {
if notification_uri.is_none() {
notification_uri = self.parse_string_token(token_info)?.into();
} else if notification_capability.is_none() {
notification_capability = self.parse_string_token(token_info)?.into();
} else {
key_list = self.parse_strings_token(token_info)?;
break;
}
}
}
}
self.validate_match(&match_type, &mut key_list)?;
Ok(Test::NotifyMethodCapability(TestNotifyMethodCapability {
key_list,
match_type,
comparator,
notification_uri: notification_uri.unwrap(),
notification_capability: notification_capability.unwrap(),
is_not: false,
}))
}
}

@ -0,0 +1,213 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::fmt::Display;
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::grammar::instruction::{CompilerState, Instruction, MapLocalVars};
use crate::sieve::compiler::lexer::Token;
use crate::sieve::compiler::{CompileError, Regex};
use crate::sieve::compiler::{ErrorType, Value};
use crate::sieve::{ExternalId, PluginArgument, PluginSchema, PluginSchemaArgument};
use crate::sieve::compiler::grammar::test::Test;
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct Plugin {
pub id: ExternalId,
pub arguments: Vec<PluginArgument<Value, Value>>,
pub is_not: bool,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct Error {
pub message: Value,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_plugin(&mut self, schema: &PluginSchema) -> Result<(), CompileError> {
let instruction = Instruction::Plugin(self.parse_plugin_(schema)?);
self.tokens.expect_token(Token::Semicolon)?;
self.instructions.push(instruction);
Ok(())
}
pub(crate) fn parse_test_plugin(
&mut self,
schema: &PluginSchema,
) -> Result<Test, CompileError> {
Ok(Test::Plugin(self.parse_plugin_(schema)?))
}
fn parse_plugin_(&mut self, schema: &PluginSchema) -> Result<Plugin, CompileError> {
let mut plugin = Plugin {
id: schema.id,
arguments: vec![],
is_not: false,
};
let mut tags = vec![];
let mut schema_args = schema.arguments.iter();
while let Some(token_info) = self.tokens.peek() {
let token_info = token_info?;
let (target, schema_arg) = match &token_info.token {
Token::Tag(tag) => {
let tag = tag.to_string();
let token_info = self.tokens.unwrap_next()?;
if let Some(tagged_arg) = schema.tags.get(&tag) {
tags.push(PluginArgument::Tag(tagged_arg.id));
if let Some(schema_arg) = &tagged_arg.argument {
(&mut tags, schema_arg)
} else {
continue;
}
} else {
return Err(token_info.expected("a valid argument"));
}
}
Token::Unknown(tag) => {
if let Some(tagged_arg) =
tag.strip_prefix(':').and_then(|tag| schema.tags.get(tag))
{
self.tokens.unwrap_next()?;
tags.push(PluginArgument::Tag(tagged_arg.id));
if let Some(schema_arg) = &tagged_arg.argument {
(&mut tags, schema_arg)
} else {
continue;
}
} else {
return Err(self.tokens.unwrap_next()?.expected("a valid argument"));
}
}
_ => {
if let Some(schema_arg) = schema_args.next() {
(&mut plugin.arguments, schema_arg)
} else {
break;
}
}
};
match schema_arg {
PluginSchemaArgument::Array(item_schema) => {
let mut items = vec![];
if matches!(item_schema.as_ref(), PluginSchemaArgument::Variable) {
for item in self.parse_static_strings()? {
match self.register_variable(item, false) {
Ok(var) => {
items.push(PluginArgument::Variable(var));
}
Err(err) => {
return Err(self.tokens.unwrap_next()?.custom(err));
}
}
}
} else {
for item in self.parse_strings(true)? {
match item_schema.convert_argument(item) {
Ok(arg) => {
items.push(arg);
}
Err(err) => {
return Err(self.tokens.unwrap_next()?.custom(err));
}
}
}
}
target.push(PluginArgument::Array(items));
}
PluginSchemaArgument::Variable => {
let token = self.tokens.unwrap_next()?;
target.push(PluginArgument::Variable(
self.parse_variable_name(token, false)?,
));
}
_ => match schema_arg.convert_argument(self.parse_string()?) {
Ok(arg) => {
target.push(arg);
}
Err(err) => {
return Err(self.tokens.unwrap_next()?.custom(err));
}
},
}
}
if let Some(schema_arg) = schema_args.next() {
self.tokens
.unwrap_next()?
.expected(format!("expected a {schema_arg}"));
}
plugin.arguments.extend(tags);
Ok(plugin)
}
}
impl PluginSchemaArgument {
fn convert_argument(&self, value: Value) -> Result<PluginArgument<Value, Value>, ErrorType> {
match self {
PluginSchemaArgument::Text => Ok(PluginArgument::Text(value)),
PluginSchemaArgument::Number => Ok(PluginArgument::Number(value)),
PluginSchemaArgument::Regex => {
if let Value::Text(expr) = value {
fancy_regex::Regex::new(&expr)
.map(|regex| PluginArgument::Regex(Regex { regex, expr }))
.map_err(|err| ErrorType::InvalidRegex(err.to_string()))
} else {
Err(ErrorType::InvalidRegex(
"Expected a regular expression".to_string(),
))
}
}
_ => Err(ErrorType::InvalidArguments),
}
}
}
impl MapLocalVars for PluginArgument<Value, Value> {
fn map_local_vars(&mut self, last_id: usize) {
match self {
PluginArgument::Text(v) => v.map_local_vars(last_id),
PluginArgument::Number(v) => v.map_local_vars(last_id),
PluginArgument::Array(v) => v.map_local_vars(last_id),
PluginArgument::Variable(v) => v.map_local_vars(last_id),
_ => (),
}
}
}
impl Display for PluginSchemaArgument {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
PluginSchemaArgument::Text => write!(f, "string"),
PluginSchemaArgument::Number => write!(f, "number"),
PluginSchemaArgument::Regex => write!(f, "regular expression"),
PluginSchemaArgument::Variable => write!(f, "variable"),
PluginSchemaArgument::Array(item) => write!(f, "array of {}s", item),
}
}
}

@ -0,0 +1,62 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::instruction::CompilerState,
lexer::{word::Word, Token},
CompileError,
};
use crate::sieve::compiler::grammar::test::Test;
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestSize {
pub over: bool,
pub limit: usize,
pub is_not: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_size(&mut self) -> Result<Test, CompileError> {
let token_info = self.tokens.unwrap_next()?;
let over = match token_info.token {
Token::Tag(Word::Over) => true,
Token::Tag(Word::Under) => false,
_ => {
return Err(token_info.expected("':over' or ':under'"));
}
};
let token_info = self.tokens.unwrap_next()?;
if let Token::Number(limit) = token_info.token {
Ok(Test::Size(TestSize {
over,
limit,
is_not: false,
}))
} else {
Err(token_info.expected("number"))
}
}
}

@ -0,0 +1,165 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{instruction::CompilerState, Capability, Comparator},
lexer::{word::Word, Token},
CompileError, Value,
};
use crate::sieve::compiler::grammar::{test::Test, MatchType};
/*
Usage: spamtest [":percent"] [COMPARATOR] [MATCH-TYPE]
<value: string>
*/
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestSpamTest {
pub value: Value,
pub match_type: MatchType,
pub comparator: Comparator,
pub percent: bool,
pub is_not: bool,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestVirusTest {
pub value: Value,
pub match_type: MatchType,
pub comparator: Comparator,
pub is_not: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_spamtest(&mut self) -> Result<Test, CompileError> {
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut percent = false;
let value;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex),
) => {
self.validate_argument(
1,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
Token::Tag(Word::Percent) => {
self.validate_argument(
3,
Capability::SpamTestPlus.into(),
token_info.line_num,
token_info.line_pos,
)?;
percent = true;
}
_ => {
value = self.parse_string_token(token_info)?;
break;
}
}
}
Ok(Test::SpamTest(TestSpamTest {
value,
percent,
match_type,
comparator,
is_not: false,
}))
}
pub(crate) fn parse_test_virustest(&mut self) -> Result<Test, CompileError> {
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let value;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex),
) => {
self.validate_argument(
1,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
_ => {
value = self.parse_string_token(token_info)?;
break;
}
}
}
Ok(Test::VirusTest(TestVirusTest {
value,
match_type,
comparator,
is_not: false,
}))
}
}

@ -0,0 +1,67 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::instruction::CompilerState, lexer::Token, CompileError, Value,
};
use crate::sieve::compiler::grammar::test::Test;
/*
Usage: specialuse_exists [<mailbox: string>]
<special-use-attrs: string-list>
*/
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestSpecialUseExists {
pub mailbox: Option<Value>,
pub attributes: Vec<Value>,
pub is_not: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_specialuseexists(&mut self) -> Result<Test, CompileError> {
let mut maybe_attributes = self.parse_strings(false)?;
match self.tokens.peek().map(|r| r.map(|t| &t.token)) {
Some(Ok(Token::StringConstant(_) | Token::StringVariable(_) | Token::BracketOpen)) => {
if maybe_attributes.len() == 1 {
Ok(Test::SpecialUseExists(TestSpecialUseExists {
mailbox: maybe_attributes.pop(),
attributes: self.parse_strings(false)?,
is_not: false,
}))
} else {
Err(self.tokens.unwrap_next()?.expected("string"))
}
}
_ => Ok(Test::SpecialUseExists(TestSpecialUseExists {
mailbox: None,
attributes: maybe_attributes,
is_not: false,
})),
}
}
}

@ -0,0 +1,100 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::{instruction::CompilerState, Capability, Comparator},
lexer::{word::Word, Token},
CompileError, Value,
};
use crate::sieve::compiler::grammar::{test::Test, MatchType};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct TestString {
pub match_type: MatchType,
pub comparator: Comparator,
pub source: Vec<Value>,
pub key_list: Vec<Value>,
pub is_not: bool,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_test_string(&mut self) -> Result<Test, CompileError> {
let mut match_type = MatchType::Is;
let mut comparator = Comparator::AsciiCaseMap;
let mut source = None;
let mut key_list: Vec<Value>;
loop {
let token_info = self.tokens.unwrap_next()?;
match token_info.token {
Token::Tag(
word @ (Word::Is
| Word::Contains
| Word::Matches
| Word::Value
| Word::Count
| Word::Regex
| Word::List),
) => {
self.validate_argument(
1,
match word {
Word::Value | Word::Count => Capability::Relational.into(),
Word::Regex => Capability::Regex.into(),
Word::List => Capability::ExtLists.into(),
_ => None,
},
token_info.line_num,
token_info.line_pos,
)?;
match_type = self.parse_match_type(word)?;
}
Token::Tag(Word::Comparator) => {
self.validate_argument(2, None, token_info.line_num, token_info.line_pos)?;
comparator = self.parse_comparator()?;
}
_ => {
if source.is_none() {
source = self.parse_strings_token(token_info)?.into();
} else {
key_list = self.parse_strings_token(token_info)?;
break;
}
}
}
}
self.validate_match(&match_type, &mut key_list)?;
Ok(Test::String(TestString {
source: source.unwrap(),
key_list,
match_type,
comparator,
is_not: false,
}))
}
}

@ -0,0 +1,107 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
pub mod string;
pub mod tokenizer;
pub mod word;
use std::{borrow::Cow, fmt::Display};
use self::word::Word;
use super::{Number, Value};
#[derive(Debug, Clone, PartialEq, Eq)]
pub(crate) enum Token {
CurlyOpen,
CurlyClose,
BracketOpen,
BracketClose,
ParenthesisOpen,
ParenthesisClose,
Comma,
Semicolon,
StringConstant(StringConstant),
StringVariable(Vec<u8>),
Number(usize),
Identifier(Word),
Tag(Word),
Unknown(String),
Colon,
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub(crate) enum StringConstant {
String(String),
Number(Number),
}
impl StringConstant {
pub fn to_string(&self) -> Cow<str> {
match self {
StringConstant::String(s) => s.as_str().into(),
StringConstant::Number(n) => n.to_string().into(),
}
}
pub fn into_string(self) -> String {
match self {
StringConstant::String(s) => s,
StringConstant::Number(n) => n.to_string(),
}
}
}
impl From<StringConstant> for Value {
fn from(value: StringConstant) -> Self {
match value {
StringConstant::String(s) => Value::Text(s),
StringConstant::Number(n) => Value::Number(n),
}
}
}
impl Display for Token {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Token::CurlyOpen => f.write_str("{"),
Token::CurlyClose => f.write_str("}"),
Token::BracketOpen => f.write_str("["),
Token::BracketClose => f.write_str("]"),
Token::ParenthesisOpen => f.write_str("("),
Token::ParenthesisClose => f.write_str(")"),
Token::Comma => f.write_str(","),
Token::Semicolon => f.write_str(";"),
Token::Colon => f.write_str(":"),
Token::Number(n) => write!(f, "{n}"),
Token::Identifier(w) => w.fmt(f),
Token::Tag(t) => write!(f, ":{t}"),
Token::Unknown(s) => f.write_str(s),
Token::StringVariable(s) => f.write_str(&String::from_utf8_lossy(s)),
Token::StringConstant(c) => match c {
StringConstant::String(s) => f.write_str(s),
StringConstant::Number(n) => write!(f, "{n}"),
},
}
}
}

@ -0,0 +1,990 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::convert::TryFrom;
use std::fmt::Display;
use mail_parser::HeaderName;
use crate::sieve::{
compiler::{
grammar::{
expr::{self, parser::ExpressionParser, tokenizer::Tokenizer},
instruction::CompilerState,
AddressPart,
},
ContentTypePart, ErrorType, HeaderPart, HeaderVariable, MessagePart, Number,
ReceivedHostname, ReceivedPart, Value, VariableType,
},
runtime::eval::IntoString,
Envelope, MAX_MATCH_VARIABLES,
};
enum State {
None,
Variable,
Encoded {
is_unicode: bool,
initial_buf_size: usize,
},
}
impl<'x> CompilerState<'x> {
pub(crate) fn tokenize_string(
&mut self,
bytes: &[u8],
parse_decoded: bool,
) -> Result<Value, ErrorType> {
let mut state = State::None;
let mut items = Vec::with_capacity(3);
let mut last_ch = 0;
let mut var_start_pos = usize::MAX;
let mut var_is_number = true;
let mut var_has_namespace = false;
let mut text_has_digits = true;
let mut text_has_dots = false;
let mut hex_start = usize::MAX;
let mut decode_buf = Vec::with_capacity(bytes.len());
let mut iter = bytes.iter().enumerate().peekable();
while let Some((mut pos, &ch)) = iter.next() {
let mut is_var_error = false;
match state {
State::None => match ch {
b'{' if last_ch == b'$' => {
decode_buf.pop();
var_start_pos = pos + 1;
var_is_number = true;
var_has_namespace = false;
state = State::Variable;
}
b'{' if last_ch == b'%' => {
decode_buf.pop();
var_start_pos = pos + 1;
// Add any text before the variable
if !decode_buf.is_empty() {
self.add_value(
&mut items,
&decode_buf,
parse_decoded,
text_has_digits,
text_has_dots,
)?;
decode_buf.clear();
text_has_digits = true;
text_has_dots = false;
}
match ExpressionParser::from_tokenizer(Tokenizer::from_iter(
iter,
|var_name, maybe_namespace| {
self.parse_expr_fnc_or_var(var_name, maybe_namespace)
},
))
.parse()
{
Ok(parser) => {
iter = parser.tokenizer.iter;
state = State::None;
if !parser.output.is_empty() {
items.push(Value::Expression(parser.output));
} else {
is_var_error = true;
pos = iter.peek().map(|(p, _)| *p).unwrap_or(bytes.len()) - 1;
}
}
Err(err) => {
return Err(ErrorType::InvalidExpression(format!(
"{}: {}",
std::str::from_utf8(bytes).unwrap_or_default(),
err
)))
}
}
}
b'.' => {
if text_has_dots {
text_has_digits = false;
} else {
text_has_dots = true;
}
decode_buf.push(ch);
}
b'0'..=b'9' => {
decode_buf.push(ch);
}
_ => {
text_has_digits = false;
decode_buf.push(ch);
}
},
State::Variable => match ch {
b'a'..=b'z' | b'A'..=b'Z' | b'_' | b'[' | b']' | b'*' | b'-' => {
var_is_number = false;
}
b'.' => {
var_is_number = false;
var_has_namespace = true;
}
b'0'..=b'9' => {}
b'}' => {
if pos > var_start_pos {
// Add any text before the variable
if !decode_buf.is_empty() {
self.add_value(
&mut items,
&decode_buf,
parse_decoded,
text_has_digits,
text_has_dots,
)?;
decode_buf.clear();
text_has_digits = true;
text_has_dots = false;
}
// Parse variable type
let var_name = std::str::from_utf8(&bytes[var_start_pos..pos]).unwrap();
let var_type = if !var_is_number {
self.parse_variable(var_name, var_has_namespace)
} else {
self.parse_match_variable(var_name)
};
match var_type {
Ok(Some(var)) => items.push(Value::Variable(var)),
Ok(None) => {}
Err(
ErrorType::InvalidNamespace(_) | ErrorType::InvalidEnvelope(_),
) => {
is_var_error = true;
}
Err(e) => return Err(e),
}
state = State::None;
} else {
is_var_error = true;
}
}
b':' => {
if parse_decoded && !var_has_namespace {
match bytes.get(var_start_pos..pos) {
Some(enc) if enc.eq_ignore_ascii_case(b"hex") => {
state = State::Encoded {
is_unicode: false,
initial_buf_size: decode_buf.len(),
};
}
Some(enc) if enc.eq_ignore_ascii_case(b"unicode") => {
state = State::Encoded {
is_unicode: true,
initial_buf_size: decode_buf.len(),
};
}
_ => {
is_var_error = true;
}
}
} else if var_has_namespace {
var_is_number = false;
} else {
is_var_error = true;
}
}
_ => {
is_var_error = true;
}
},
State::Encoded {
is_unicode,
initial_buf_size,
} => match ch {
b'0'..=b'9' | b'a'..=b'f' | b'A'..=b'F' => {
if hex_start == usize::MAX {
hex_start = pos;
}
}
b' ' | b'\t' | b'\r' | b'\n' | b'}' => {
if hex_start != usize::MAX {
let code = std::str::from_utf8(&bytes[hex_start..pos]).unwrap();
hex_start = usize::MAX;
if !is_unicode {
if let Ok(ch) = u8::from_str_radix(code, 16) {
decode_buf.push(ch);
} else {
is_var_error = true;
}
} else if let Ok(ch) = u32::from_str_radix(code, 16) {
let mut buf = [0; 4];
decode_buf.extend_from_slice(
char::from_u32(ch)
.ok_or(ErrorType::InvalidUnicodeSequence(ch))?
.encode_utf8(&mut buf)
.as_bytes(),
);
} else {
is_var_error = true;
}
}
if ch == b'}' {
if decode_buf.len() != initial_buf_size {
state = State::None;
} else {
is_var_error = true;
}
}
}
_ => {
is_var_error = true;
}
},
}
if is_var_error {
if let State::Encoded {
initial_buf_size, ..
} = state
{
if initial_buf_size != decode_buf.len() {
decode_buf.truncate(initial_buf_size);
}
}
decode_buf.extend_from_slice(&bytes[var_start_pos - 2..pos + 1]);
hex_start = usize::MAX;
state = State::None;
}
last_ch = ch;
}
match state {
State::Variable => {
decode_buf.extend_from_slice(&bytes[var_start_pos - 2..bytes.len()]);
}
State::Encoded {
initial_buf_size, ..
} => {
if initial_buf_size != decode_buf.len() {
decode_buf.truncate(initial_buf_size);
}
decode_buf.extend_from_slice(&bytes[var_start_pos - 2..bytes.len()]);
}
State::None => (),
}
if !decode_buf.is_empty() {
self.add_value(
&mut items,
&decode_buf,
parse_decoded,
text_has_digits,
text_has_dots,
)?;
}
Ok(match items.len() {
1 => items.pop().unwrap(),
0 => Value::Text(String::new()),
_ => Value::List(items),
})
}
fn parse_match_variable(&mut self, var_name: &str) -> Result<Option<VariableType>, ErrorType> {
let num = var_name
.parse()
.map_err(|_| ErrorType::InvalidNumber(var_name.to_string()))?;
if num < MAX_MATCH_VARIABLES {
if self.register_match_var(num) {
let total_vars = num + 1;
if total_vars > self.vars_match_max {
self.vars_match_max = total_vars;
}
Ok(Some(VariableType::Match(num)))
} else {
Ok(None)
}
} else {
Err(ErrorType::InvalidMatchVariable(num))
}
}
pub fn parse_variable(
&self,
var_name: &str,
maybe_namespace: bool,
) -> Result<Option<VariableType>, ErrorType> {
if !maybe_namespace {
if self.is_var_global(var_name) {
Ok(Some(VariableType::Global(var_name.to_string())))
} else if let Some(var_id) = self.get_local_var(var_name) {
Ok(Some(VariableType::Local(var_id)))
} else {
Ok(None)
}
} else {
let var = match var_name.to_lowercase().split_once('.') {
Some(("global" | "t", var_name)) if !var_name.is_empty() => {
VariableType::Global(var_name.to_string())
}
Some(("env", var_name)) if !var_name.is_empty() => {
VariableType::Environment(var_name.to_string())
}
Some(("envelope", var_name)) if !var_name.is_empty() => {
let envelope = match var_name {
"from" => Envelope::From,
"to" => Envelope::To,
"by_time_absolute" => Envelope::ByTimeAbsolute,
"by_time_relative" => Envelope::ByTimeRelative,
"by_mode" => Envelope::ByMode,
"by_trace" => Envelope::ByTrace,
"notify" => Envelope::Notify,
"orcpt" => Envelope::Orcpt,
"ret" => Envelope::Ret,
"envid" => Envelope::Envid,
_ => {
return Err(ErrorType::InvalidEnvelope(var_name.to_string()));
}
};
VariableType::Envelope(envelope)
}
Some(("header", var_name)) if !var_name.is_empty() => {
self.parse_header_variable(var_name)?
}
Some(("body", var_name)) if !var_name.is_empty() => match var_name {
"text" => VariableType::Part(MessagePart::TextBody(false)),
"html" => VariableType::Part(MessagePart::HtmlBody(false)),
"to_text" => VariableType::Part(MessagePart::TextBody(true)),
"to_html" => VariableType::Part(MessagePart::HtmlBody(true)),
_ => return Err(ErrorType::InvalidNamespace(var_name.to_string())),
},
Some(("part", var_name)) if !var_name.is_empty() => match var_name {
"text" => VariableType::Part(MessagePart::Contents),
"raw" => VariableType::Part(MessagePart::Raw),
_ => return Err(ErrorType::InvalidNamespace(var_name.to_string())),
},
None => {
if self.is_var_global(var_name) {
VariableType::Global(var_name.to_string())
} else if let Some(var_id) = self.get_local_var(var_name) {
VariableType::Local(var_id)
} else {
return Ok(None);
}
}
_ => return Err(ErrorType::InvalidNamespace(var_name.to_string())),
};
Ok(Some(var))
}
}
fn parse_header_variable(&self, var_name: &str) -> Result<VariableType, ErrorType> {
#[derive(Debug)]
enum State {
Name,
Index,
Part,
PartIndex,
}
let mut name = vec![];
let mut has_name = false;
let mut has_wildcard = false;
let mut hdr_name = String::new();
let mut hdr_index = String::new();
let mut part = String::new();
let mut part_index = String::new();
let mut state = State::Name;
for ch in var_name.chars() {
match state {
State::Name => match ch {
'[' => {
state = if hdr_index.is_empty() {
State::Index
} else if part.is_empty() {
State::PartIndex
} else {
return Err(ErrorType::InvalidExpression(var_name.to_string()));
};
has_name = true;
}
'.' => {
state = State::Part;
has_name = true;
}
' ' | '\t' | '\r' | '\n' => {}
'*' if !has_wildcard && hdr_name.is_empty() && name.is_empty() => {
has_wildcard = true;
}
':' if !hdr_name.is_empty() && !has_wildcard => {
name.push(
HeaderName::parse(std::mem::take(&mut hdr_name)).ok_or_else(|| {
ErrorType::InvalidExpression(var_name.to_string())
})?,
);
}
_ if !has_name && !has_wildcard => {
hdr_name.push(ch);
}
_ => {
return Err(ErrorType::InvalidExpression(var_name.to_string()));
}
},
State::Index => match ch {
']' => {
state = State::Name;
}
' ' | '\t' | '\r' | '\n' => {}
_ => {
hdr_index.push(ch);
}
},
State::Part => match ch {
'[' => {
state = State::PartIndex;
}
' ' | '\t' | '\r' | '\n' => {}
_ => {
part.push(ch);
}
},
State::PartIndex => match ch {
']' => {
state = State::Name;
}
' ' | '\t' | '\r' | '\n' => {}
_ => {
part_index.push(ch);
}
},
}
}
if !hdr_name.is_empty() {
name.push(
HeaderName::parse(hdr_name)
.ok_or_else(|| ErrorType::InvalidExpression(var_name.to_string()))?,
);
}
if !name.is_empty() || has_wildcard {
Ok(VariableType::Header(HeaderVariable {
name,
part: HeaderPart::try_from(part.as_str())
.map_err(|_| ErrorType::InvalidExpression(var_name.to_string()))?,
index_hdr: match hdr_index.as_str() {
"" => {
if !has_wildcard {
-1
} else {
0
}
}
"*" => 0,
_ => hdr_index
.parse()
.map(|v| if v == 0 { 1 } else { v })
.map_err(|_| ErrorType::InvalidExpression(var_name.to_string()))?,
},
index_part: match part_index.as_str() {
"" => {
if !has_wildcard {
-1
} else {
0
}
}
"*" => 0,
_ => part_index
.parse()
.map(|v| if v == 0 { 1 } else { v })
.map_err(|_| ErrorType::InvalidExpression(var_name.to_string()))?,
},
}))
} else {
Err(ErrorType::InvalidExpression(var_name.to_string()))
}
}
pub fn parse_expr_fnc_or_var(
&self,
var_name: &str,
maybe_namespace: bool,
) -> Result<expr::Token, String> {
match self.parse_variable(var_name, maybe_namespace) {
Ok(Some(var)) => Ok(expr::Token::Variable(var)),
_ => {
if let Some((id, num_args)) = self.compiler.functions.get(var_name) {
Ok(expr::Token::Function {
name: var_name.to_string(),
id: *id,
num_args: *num_args,
})
} else {
Err(format!("Invalid variable or function name {var_name:?}"))
}
}
}
}
#[inline(always)]
fn add_value(
&mut self,
items: &mut Vec<Value>,
buf: &[u8],
parse_decoded: bool,
has_digits: bool,
has_dots: bool,
) -> Result<(), ErrorType> {
if !parse_decoded {
items.push(if has_digits {
if has_dots {
match std::str::from_utf8(buf)
.ok()
.and_then(|v| (v, v.parse::<f64>().ok()?).into())
{
Some((v, n)) if n.to_string() == v => Value::Number(Number::Float(n)),
_ => Value::Text(buf.to_vec().into_string()),
}
} else {
match std::str::from_utf8(buf)
.ok()
.and_then(|v| (v, v.parse::<i64>().ok()?).into())
{
Some((v, n)) if n.to_string() == v => Value::Number(Number::Integer(n)),
_ => Value::Text(buf.to_vec().into_string()),
}
}
} else {
Value::Text(buf.to_vec().into_string())
});
} else {
match self.tokenize_string(buf, false)? {
Value::List(new_items) => items.extend(new_items),
item => items.push(item),
}
}
Ok(())
}
}
impl TryFrom<&str> for HeaderPart {
type Error = ();
fn try_from(value: &str) -> Result<Self, Self::Error> {
let (value, subvalue) = value.split_once('.').unwrap_or((value, ""));
Ok(match value {
"" | "text" => HeaderPart::Text,
// Addresses
"name" => HeaderPart::Address(AddressPart::Name),
"addr" => {
if !subvalue.is_empty() {
HeaderPart::Address(AddressPart::try_from(subvalue)?)
} else {
HeaderPart::Address(AddressPart::All)
}
}
// Content-type
"type" => HeaderPart::ContentType(ContentTypePart::Type),
"subtype" => HeaderPart::ContentType(ContentTypePart::Subtype),
"attr" if !subvalue.is_empty() => {
HeaderPart::ContentType(ContentTypePart::Attribute(subvalue.to_string()))
}
// Received
"rcvd" => {
if !subvalue.is_empty() {
HeaderPart::Received(ReceivedPart::try_from(subvalue)?)
} else {
HeaderPart::Text
}
}
// Id
"id" => HeaderPart::Id,
// Raw
"raw" => HeaderPart::Raw,
// Date
"date" => HeaderPart::Date,
// Content-type attributes
_ => {
return Err(());
}
})
}
}
impl TryFrom<&str> for ReceivedPart {
type Error = ();
fn try_from(value: &str) -> Result<Self, Self::Error> {
Ok(match value {
// Received
"from" => ReceivedPart::From(ReceivedHostname::Any),
"from.name" => ReceivedPart::From(ReceivedHostname::Name),
"from.ip" => ReceivedPart::From(ReceivedHostname::Ip),
"ip" => ReceivedPart::FromIp,
"iprev" => ReceivedPart::FromIpRev,
"by" => ReceivedPart::By(ReceivedHostname::Any),
"by.name" => ReceivedPart::By(ReceivedHostname::Name),
"by.ip" => ReceivedPart::By(ReceivedHostname::Ip),
"for" => ReceivedPart::For,
"with" => ReceivedPart::With,
"tls" => ReceivedPart::TlsVersion,
"cipher" => ReceivedPart::TlsCipher,
"id" => ReceivedPart::Id,
"ident" => ReceivedPart::Ident,
"date" => ReceivedPart::Date,
"date.raw" => ReceivedPart::DateRaw,
_ => return Err(()),
})
}
}
impl TryFrom<&str> for AddressPart {
type Error = ();
fn try_from(value: &str) -> Result<Self, Self::Error> {
Ok(match value {
"name" => AddressPart::Name,
"addr" | "all" => AddressPart::All,
"addr.domain" => AddressPart::Domain,
"addr.local" => AddressPart::LocalPart,
"addr.user" => AddressPart::User,
"addr.detail" => AddressPart::Detail,
_ => return Err(()),
})
}
}
impl Display for Value {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Value::Text(t) => f.write_str(t),
Value::List(l) => {
for i in l {
i.fmt(f)?;
}
Ok(())
}
Value::Number(n) => n.fmt(f),
Value::Variable(v) => v.fmt(f),
Value::Expression(_) => f.write_str("%{}"),
Value::Regex(r) => f.write_str(&r.expr),
}
}
}
impl Display for VariableType {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
VariableType::Local(v) => write!(f, "${{{v}}}"),
VariableType::Match(v) => write!(f, "${{{v}}}"),
VariableType::Global(v) => write!(f, "${{global.{v}}}"),
VariableType::Environment(v) => write!(f, "${{env.{v}}}"),
VariableType::Envelope(env) => f.write_str(match env {
Envelope::From => "${{envelope.from}}",
Envelope::To => "${{envelope.to}}",
Envelope::ByTimeAbsolute => "${{envelope.by_time_absolute}}",
Envelope::ByTimeRelative => "${{envelope.by_time_relative}}",
Envelope::ByMode => "${{envelope.by_mode}}",
Envelope::ByTrace => "${{envelope.by_trace}}",
Envelope::Notify => "${{envelope.notify}}",
Envelope::Orcpt => "${{envelope.orcpt}}",
Envelope::Ret => "${{envelope.ret}}",
Envelope::Envid => "${{envelope.envit}}",
}),
VariableType::Header(hdr) => {
write!(
f,
"${{header.{}",
hdr.name.first().map(|h| h.as_str()).unwrap_or_default()
)?;
if hdr.index_hdr != 0 {
write!(f, "[{}]", hdr.index_hdr)?;
} else {
f.write_str("[*]")?;
}
/*if hdr.part != HeaderPart::Text {
f.write_str(".")?;
f.write_str(match &hdr.part {
HeaderPart::Name => "name",
HeaderPart::Address => "address",
HeaderPart::Type => "type",
HeaderPart::Subtype => "subtype",
HeaderPart::Raw => "raw",
HeaderPart::Date => "date",
HeaderPart::Attribute(attr) => attr.as_str(),
HeaderPart::Text => unreachable!(),
})?;
}*/
if hdr.index_part != 0 {
write!(f, "[{}]", hdr.index_part)?;
} else {
f.write_str("[*]")?;
}
f.write_str("}")
}
VariableType::Part(part) => {
write!(
f,
"${{{}",
match part {
MessagePart::TextBody(true) => "body.to_text",
MessagePart::TextBody(false) => "body.text",
MessagePart::HtmlBody(true) => "body.to_html",
MessagePart::HtmlBody(false) => "body.html",
MessagePart::Contents => "part.text",
MessagePart::Raw => "part.raw",
}
)?;
f.write_str("}")
}
}
}
}
#[cfg(test)]
mod tests {
use mail_parser::HeaderName;
use super::Value;
use crate::sieve::compiler::grammar::instruction::{
Block, CompilerState, Instruction, MAX_PARAMS,
};
use crate::sieve::compiler::grammar::test::Test;
use crate::sieve::compiler::grammar::tests::test_string::TestString;
use crate::sieve::compiler::grammar::{Comparator, MatchType};
use crate::sieve::compiler::lexer::tokenizer::Tokenizer;
use crate::sieve::compiler::lexer::word::Word;
use crate::sieve::compiler::{AddressPart, HeaderPart, HeaderVariable, VariableType};
use crate::sieve::{AHashSet, Compiler};
use std::convert::{TryFrom, TryInto};
#[test]
fn tokenize_string() {
let c = Compiler::new();
let mut block = Block::new(Word::Not);
block.match_test_pos.push(0);
let mut compiler = CompilerState {
compiler: &c,
instructions: vec![Instruction::Test(Test::String(TestString {
match_type: MatchType::Regex(u64::MAX),
comparator: Comparator::AsciiCaseMap,
source: vec![Value::Variable(VariableType::Local(0))],
key_list: vec![Value::Variable(VariableType::Local(0))],
is_not: false,
}))],
block_stack: Vec::new(),
block,
last_block_type: Word::Not,
vars_global: AHashSet::new(),
vars_num: 0,
vars_num_max: 0,
vars_local: 0,
tokens: Tokenizer::new(&c, b""),
vars_match_max: usize::MAX,
param_check: [false; MAX_PARAMS],
includes_num: 0,
};
for (input, expected_result) in [
("$${hex:24 24}", Value::Text("$$$".to_string())),
("$${hex:40}", Value::Text("$@".to_string())),
("${hex: 40 }", Value::Text("@".to_string())),
("${HEX: 40}", Value::Text("@".to_string())),
("${hex:40", Value::Text("${hex:40".to_string())),
("${hex:400}", Value::Text("${hex:400}".to_string())),
("${hex:4${hex:30}}", Value::Text("${hex:40}".to_string())),
("${unicode:40}", Value::Text("@".to_string())),
("${ unicode:40}", Value::Text("${ unicode:40}".to_string())),
("${UNICODE:40}", Value::Text("@".to_string())),
("${UnICoDE:0000040}", Value::Text("@".to_string())),
("${Unicode:40}", Value::Text("@".to_string())),
(
"${Unicode:40 40 ",
Value::Text("${Unicode:40 40 ".to_string()),
),
(
"${Unicode:Cool}",
Value::Text("${Unicode:Cool}".to_string()),
),
("", Value::Text("".to_string())),
(
"${global.full}",
Value::Variable(VariableType::Global("full".to_string())),
),
(
"${BAD${global.Company}",
Value::List(vec![
Value::Text("${BAD".to_string()),
Value::Variable(VariableType::Global("company".to_string())),
]),
),
(
"${President, ${global.Company} Inc.}",
Value::List(vec![
Value::Text("${President, ".to_string()),
Value::Variable(VariableType::Global("company".to_string())),
Value::Text(" Inc.}".to_string()),
]),
),
(
"dear${hex:20 24 7b}global.Name}",
Value::List(vec![
Value::Text("dear ".to_string()),
Value::Variable(VariableType::Global("name".to_string())),
]),
),
(
"INBOX.lists.${2}",
Value::List(vec![
Value::Text("INBOX.lists.".to_string()),
Value::Variable(VariableType::Match(2)),
]),
),
(
"Ein unerh${unicode:00F6}rt gro${unicode:00DF}er Test",
Value::Text("Ein unerhört großer Test".to_string()),
),
("&%${}!", Value::Text("&%${}!".to_string())),
("${doh!}", Value::Text("${doh!}".to_string())),
(
"${hex: 20 }${global.hi}${hex: 20 }",
Value::List(vec![
Value::Text(" ".to_string()),
Value::Variable(VariableType::Global("hi".to_string())),
Value::Text(" ".to_string()),
]),
),
(
"${hex:20 24 7b z}${global.hi}${unicode:}${unicode: }${hex:20}",
Value::List(vec![
Value::Text("${hex:20 24 7b z}".to_string()),
Value::Variable(VariableType::Global("hi".to_string())),
Value::Text("${unicode:}${unicode: } ".to_string()),
]),
),
(
"${header.from}",
Value::Variable(VariableType::Header(HeaderVariable {
name: vec![HeaderName::From],
part: HeaderPart::Text,
index_hdr: -1,
index_part: -1,
})),
),
(
"${header.from.addr}",
Value::Variable(VariableType::Header(HeaderVariable {
name: vec![HeaderName::From],
part: HeaderPart::Address(AddressPart::All),
index_hdr: -1,
index_part: -1,
})),
),
(
"${header.from[1]}",
Value::Variable(VariableType::Header(HeaderVariable {
name: vec![HeaderName::From],
part: HeaderPart::Text,
index_hdr: 1,
index_part: -1,
})),
),
(
"${header.from[*]}",
Value::Variable(VariableType::Header(HeaderVariable {
name: vec![HeaderName::From],
part: HeaderPart::Text,
index_hdr: 0,
index_part: -1,
})),
),
(
"${header.from[20].name}",
Value::Variable(VariableType::Header(HeaderVariable {
name: vec![HeaderName::From],
part: HeaderPart::Address(AddressPart::Name),
index_hdr: 20,
index_part: -1,
})),
),
(
"${header.from[*].addr}",
Value::Variable(VariableType::Header(HeaderVariable {
name: vec![HeaderName::From],
part: HeaderPart::Address(AddressPart::All),
index_hdr: 0,
index_part: -1,
})),
),
(
"${header.from[-5].name[2]}",
Value::Variable(VariableType::Header(HeaderVariable {
name: vec![HeaderName::From],
part: HeaderPart::Address(AddressPart::Name),
index_hdr: -5,
index_part: 2,
})),
),
(
"${header.from[*].raw[*]}",
Value::Variable(VariableType::Header(HeaderVariable {
name: vec![HeaderName::From],
part: HeaderPart::Raw,
index_hdr: 0,
index_part: 0,
})),
),
] {
assert_eq!(
compiler.tokenize_string(input.as_bytes(), true).unwrap(),
expected_result,
"Failed for {input}"
);
}
for input in ["${unicode:200000}", "${Unicode:DF01}"] {
assert!(compiler.tokenize_string(input.as_bytes(), true).is_err());
}
}
}

@ -0,0 +1,590 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::{iter::Peekable, slice::Iter};
use crate::sieve::{
compiler::{CompileError, ErrorType, Number},
runtime::eval::IntoString,
Compiler,
};
use super::{word::WORDS, StringConstant, Token};
pub(crate) struct Tokenizer<'x> {
pub compiler: &'x Compiler,
pub iter: Peekable<Iter<'x, u8>>,
pub buf: Vec<u8>,
pub next_token: Vec<TokenInfo>,
pub pos: usize,
pub line_num: usize,
pub line_start: usize,
pub text_line_num: usize,
pub text_line_pos: usize,
pub token_line_num: usize,
pub token_line_pos: usize,
pub token_is_tag: bool,
pub last_ch: u8,
pub state: State,
}
#[derive(Debug)]
pub(crate) struct TokenInfo {
pub(crate) token: Token,
pub(crate) line_num: usize,
pub(crate) line_pos: usize,
}
pub(crate) enum State {
None,
BracketComment,
HashComment,
QuotedString(StringType),
MultiLine(StringType),
}
#[derive(Clone, Copy, Default)]
pub(crate) struct StringType {
maybe_variable: bool,
has_other: bool,
has_digits: bool,
has_dots: bool,
}
impl<'x> Tokenizer<'x> {
pub fn new(compiler: &'x Compiler, bytes: &'x [u8]) -> Self {
Tokenizer {
compiler,
iter: bytes.iter().peekable(),
buf: Vec::with_capacity(bytes.len() / 2),
pos: usize::MAX,
line_num: 1,
line_start: 0,
text_line_num: 0,
text_line_pos: 0,
token_line_num: 0,
token_line_pos: 0,
token_is_tag: false,
next_token: Vec::with_capacity(2),
last_ch: 0,
state: State::None,
}
}
pub fn get_current_token(&mut self) -> Option<TokenInfo> {
if !self.buf.is_empty() {
let word = std::str::from_utf8(&self.buf).unwrap();
let token = if let Some(word) = WORDS.get(word) {
if self.token_is_tag {
self.token_line_pos -= 1;
Token::Tag(*word)
} else {
Token::Identifier(*word)
}
} else if self.buf.first().unwrap().is_ascii_digit() {
let multiplier = match self.buf.last().unwrap() {
b'k' => 1024,
b'm' => 1048576,
b'g' => 1073741824,
_ => 1,
};
if let Ok(number) = (if multiplier > 1 && self.buf.len() > 1 {
std::str::from_utf8(&self.buf[..self.buf.len() - 1]).unwrap()
} else {
word
})
.parse::<usize>()
{
Token::Number(number.saturating_mul(multiplier))
} else if self.token_is_tag {
Token::Unknown(format!(":{word}"))
} else {
Token::Unknown(word.to_string())
}
} else if self.token_is_tag {
Token::Unknown(format!(":{word}"))
} else {
Token::Unknown(word.to_string())
};
self.reset_current_token();
Some(TokenInfo {
token,
line_num: self.token_line_num,
line_pos: self.token_line_pos,
})
} else {
None
}
}
#[inline(always)]
pub fn reset_current_token(&mut self) {
self.buf.clear();
self.token_is_tag = false;
}
#[inline(always)]
pub fn token_is_tag(&mut self) {
self.token_is_tag = true;
}
pub fn get_token(&mut self, token: Token) -> TokenInfo {
let next_token = TokenInfo {
token,
line_num: self.line_num,
line_pos: self.pos - self.line_start,
};
if let Some(token) = self.get_current_token() {
self.next_token.push(next_token);
token
} else {
next_token
}
}
pub fn get_string(&mut self, str_type: StringType) -> Result<TokenInfo, CompileError> {
if self.buf.len() < self.compiler.max_string_size {
let token = if str_type.maybe_variable {
Token::StringVariable(self.buf.to_vec())
} else {
let constant = self.buf.to_vec().into_string();
if !str_type.has_other && str_type.has_digits {
if !str_type.has_dots {
if let Some(number) = constant.parse::<i64>().ok().and_then(|n| {
if n.to_string() == constant {
Some(n)
} else {
None
}
}) {
Token::StringConstant(StringConstant::Number(Number::Integer(number)))
} else {
Token::StringConstant(StringConstant::String(constant))
}
} else if let Some(number) = constant.parse::<f64>().ok().and_then(|n| {
if n.to_string() == constant {
Some(n)
} else {
None
}
}) {
Token::StringConstant(StringConstant::Number(Number::Float(number)))
} else {
Token::StringConstant(StringConstant::String(constant))
}
} else {
Token::StringConstant(StringConstant::String(constant))
}
};
self.buf.clear();
Ok(TokenInfo {
token,
line_num: self.text_line_num,
line_pos: self.text_line_pos,
})
} else {
Err(CompileError {
line_num: self.text_line_num,
line_pos: self.text_line_pos,
error_type: ErrorType::StringTooLong,
})
}
}
#[inline(always)]
pub fn push_byte(&mut self, ch: u8) {
if self.buf.is_empty() {
self.token_line_num = self.line_num;
self.token_line_pos = self.pos - self.line_start;
}
self.buf.push(ch);
}
#[inline(always)]
pub fn new_line(&mut self) {
self.line_num += 1;
self.line_start = self.pos;
}
#[inline(always)]
pub fn text_start(&mut self) {
self.text_line_num = self.line_num;
self.text_line_pos = self.pos - self.line_start;
}
#[inline(always)]
pub fn is_token_start(&self) -> bool {
self.buf.is_empty()
}
#[inline(always)]
pub fn token_bytes(&self) -> &[u8] {
&self.buf
}
#[inline(always)]
pub fn next_byte(&mut self) -> Option<(u8, u8)> {
self.iter.next().map(|&ch| {
let last_ch = self.last_ch;
self.pos = self.pos.wrapping_add(1);
self.last_ch = ch;
(ch, last_ch)
})
}
#[inline(always)]
pub fn peek_byte(&mut self) -> Option<u8> {
self.iter.peek().map(|ch| **ch)
}
pub fn unwrap_next(&mut self) -> Result<TokenInfo, CompileError> {
if let Some(token) = self.next() {
token
} else {
Err(CompileError {
line_num: self.line_num,
line_pos: self.pos - self.line_start,
error_type: ErrorType::UnexpectedEOF,
})
}
}
pub fn expect_token(&mut self, token: Token) -> Result<(), CompileError> {
let next_token = self.unwrap_next()?;
if next_token.token == token {
Ok(())
} else {
Err(next_token.expected(format!("'{token}'")))
}
}
pub fn expect_static_string(&mut self) -> Result<String, CompileError> {
let next_token = self.unwrap_next()?;
match next_token.token {
Token::StringConstant(s) => Ok(s.into_string()),
Token::BracketOpen => {
let mut string = None;
loop {
let token_info = self.unwrap_next()?;
match token_info.token {
Token::StringConstant(string_) => {
string = string_.into();
}
Token::BracketClose if string.is_some() => break,
_ => return Err(token_info.expected("constant string")),
}
}
Ok(string.unwrap().into_string())
}
_ => Err(next_token.expected("constant string")),
}
}
pub fn expect_number(&mut self, max_value: usize) -> Result<usize, CompileError> {
let next_token = self.unwrap_next()?;
if let Token::Number(n) = next_token.token {
if n < max_value {
Ok(n)
} else {
Err(next_token.expected(format!("number lower than {max_value}")))
}
} else {
Err(next_token.expected("number"))
}
}
pub fn invalid_character(&self) -> CompileError {
CompileError {
line_num: self.line_num,
line_pos: self.pos - self.line_start,
error_type: ErrorType::InvalidCharacter(self.last_ch),
}
}
pub fn peek(&mut self) -> Option<Result<&TokenInfo, CompileError>> {
if self.next_token.is_empty() {
match self.next()? {
Ok(next_token) => self.next_token.push(next_token),
Err(err) => return Some(Err(err)),
}
}
self.next_token.last().map(Ok)
}
}
impl<'x> Iterator for Tokenizer<'x> {
type Item = Result<TokenInfo, CompileError>;
fn next(&mut self) -> Option<Self::Item> {
if let Some(prev_token) = self.next_token.pop() {
return Some(Ok(prev_token));
}
'outer: while let Some((ch, last_ch)) = self.next_byte() {
match self.state {
State::None => match ch {
b'a'..=b'z' | b'0'..=b'9' | b'_' | b'.' | b'$' => {
self.push_byte(ch);
}
b'A'..=b'Z' => {
self.push_byte(ch.to_ascii_lowercase());
}
b':' => {
if self.is_token_start()
&& matches!(self.peek_byte(), Some(b) if b.is_ascii_alphabetic())
{
self.token_is_tag();
} else if self.token_bytes().eq_ignore_ascii_case(b"text") {
self.state = State::MultiLine(StringType::default());
self.text_start();
while let Some((ch, _)) = self.next_byte() {
if ch == b'\n' {
self.new_line();
self.reset_current_token();
continue 'outer;
}
}
} else {
return Some(Ok(self.get_token(Token::Colon)));
//return Some(Err(self.invalid_character()));
}
}
b'"' => {
self.state = State::QuotedString(StringType::default());
self.text_start();
if let Some(token) = self.get_current_token() {
return Some(Ok(token));
}
}
b'{' => {
return Some(Ok(self.get_token(Token::CurlyOpen)));
}
b'}' => {
return Some(Ok(self.get_token(Token::CurlyClose)));
}
b';' => {
return Some(Ok(self.get_token(Token::Semicolon)));
}
b',' => {
return Some(Ok(self.get_token(Token::Comma)));
}
b'[' => {
return Some(Ok(self.get_token(Token::BracketOpen)));
}
b']' => {
return Some(Ok(self.get_token(Token::BracketClose)));
}
b'(' => {
return Some(Ok(self.get_token(Token::ParenthesisOpen)));
}
b')' => {
return Some(Ok(self.get_token(Token::ParenthesisClose)));
}
b'/' => {
if let Some((b'*', _)) = self.next_byte() {
self.last_ch = 0;
self.state = State::BracketComment;
self.text_start();
if let Some(token) = self.get_current_token() {
return Some(Ok(token));
}
} else {
return Some(Err(self.invalid_character()));
}
}
b'#' => {
self.state = State::HashComment;
if let Some(token) = self.get_current_token() {
return Some(Ok(token));
}
}
b'\n' => {
self.new_line();
if let Some(token) = self.get_current_token() {
return Some(Ok(token));
}
}
b' ' | b'\t' | b'\r' => {
if let Some(token) = self.get_current_token() {
return Some(Ok(token));
}
}
_ => {
return Some(Err(self.invalid_character()));
}
},
State::BracketComment { .. } => match ch {
b'/' if last_ch == b'*' => {
self.state = State::None;
}
b'\n' => {
self.new_line();
}
_ => (),
},
State::HashComment => {
if ch == b'\n' {
self.state = State::None;
self.new_line();
}
}
State::QuotedString(mut str_type) => match ch {
b'"' if last_ch != b'\\' => {
self.state = State::None;
return Some(self.get_string(str_type));
}
b'\n' => {
self.new_line();
self.push_byte(b'\n');
str_type.has_other = true;
self.state = State::QuotedString(str_type);
}
b'{' if (last_ch == b'$' || last_ch == b'%') => {
str_type.maybe_variable = true;
self.state = State::QuotedString(str_type);
self.push_byte(ch);
}
b'\\' => {
if last_ch == b'\\' {
self.push_byte(ch);
}
}
b'0'..=b'9' => {
if !str_type.has_digits {
str_type.has_digits = true;
self.state = State::QuotedString(str_type);
}
self.push_byte(ch);
}
b'.' => {
if !str_type.has_dots {
str_type.has_dots = true;
} else {
str_type.has_other = true;
}
self.state = State::QuotedString(str_type);
self.push_byte(ch);
}
_ => {
if !str_type.has_other && ch != b'-' {
str_type.has_other = true;
self.state = State::QuotedString(str_type);
}
self.push_byte(ch);
}
},
State::MultiLine(mut str_type) => match ch {
b'.' if last_ch == b'\n' => {
let is_eof = match (self.next_byte(), self.peek_byte()) {
(Some((b'\r', _)), Some(b'\n')) => {
self.next_byte();
true
}
(Some((b'\n', _)), _) => true,
(Some((b'.', _)), _) => {
self.push_byte(b'.');
false
}
(Some((ch, _)), _) => {
self.push_byte(b'.');
self.push_byte(ch);
false
}
_ => false,
};
if is_eof {
self.new_line();
self.state = State::None;
return Some(self.get_string(str_type));
}
}
b'\n' => {
self.new_line();
self.push_byte(b'\n');
}
b'{' if (last_ch == b'$' || last_ch == b'%') => {
str_type.maybe_variable = true;
self.state = State::MultiLine(str_type);
self.push_byte(ch);
}
b'0'..=b'9' => {
if !str_type.has_digits {
str_type.has_digits = true;
self.state = State::MultiLine(str_type);
}
self.push_byte(ch);
}
b'.' => {
if !str_type.has_dots {
str_type.has_dots = true;
} else {
str_type.has_other = true;
}
self.state = State::MultiLine(str_type);
self.push_byte(ch);
}
_ => {
if !str_type.has_other && ch != b'-' {
str_type.has_other = true;
self.state = State::MultiLine(str_type);
}
self.push_byte(ch);
}
},
}
}
match self.state {
State::BracketComment | State::QuotedString(_) | State::MultiLine(_) => {
Some(Err(CompileError {
line_num: self.text_line_num,
line_pos: self.text_line_pos,
error_type: (&self.state).into(),
}))
}
_ => None,
}
}
}
impl From<&State> for ErrorType {
fn from(state: &State) -> Self {
match state {
State::BracketComment => ErrorType::UnterminatedComment,
State::QuotedString(_) => ErrorType::UnterminatedString,
State::MultiLine(_) => ErrorType::UnterminatedMultiline,
_ => unreachable!(),
}
}
}

@ -0,0 +1,420 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::fmt::Display;
use phf::phf_map;
#[derive(Debug, PartialEq, Eq, Clone, Copy)]
pub(crate) enum Word {
AddFlag,
AddHeader,
Address,
Addresses,
All,
AllOf,
AnyChild,
AnyOf,
Body,
Break,
ByMode,
ByTimeAbsolute,
ByTimeRelative,
ByTrace,
Comparator,
Contains,
Content,
ContentType,
Convert,
Copy,
Count,
Create,
CurrentDate,
Date,
Days,
DeleteHeader,
Detail,
Discard,
Domain,
Duplicate,
Else,
ElsIf,
Enclose,
EncodeUrl,
Envelope,
Environment,
Ereject,
Error,
Exists,
ExtractText,
False,
Fcc,
FileInto,
First,
Flags,
ForEveryPart,
From,
Global,
Handle,
HasFlag,
Header,
Headers,
If,
Ihave,
Importance,
Include,
Index,
Is,
Keep,
Last,
Length,
List,
LocalPart,
Lower,
LowerFirst,
MailboxExists,
MailboxId,
MailboxIdExists,
Matches,
Message,
Metadata,
MetadataExists,
Mime,
Name,
Not,
Notify,
NotifyMethodCapability,
Once,
Optional,
Options,
OriginalZone,
Over,
Param,
Percent,
Personal,
QuoteRegex,
QuoteWildcard,
Raw,
Redirect,
Regex,
Reject,
RemoveFlag,
Replace,
Require,
Ret,
Return,
Seconds,
ServerMetadata,
ServerMetadataExists,
Set,
SetFlag,
Size,
SpamTest,
SpecialUse,
SpecialUseExists,
Stop,
String,
Subject,
Subtype,
Text,
True,
Type,
Under,
UniqueId,
Upper,
UpperFirst,
User,
Vacation,
ValidExtList,
ValidNotifyMethod,
Value,
VirusTest,
Zone,
// Extensions
Eval,
Local,
ForEveryLine,
}
pub(crate) static WORDS: phf::Map<&'static str, Word> = phf_map! {
"addflag" => Word::AddFlag,
"addheader" => Word::AddHeader,
"address" => Word::Address,
"addresses" => Word::Addresses,
"all" => Word::All,
"allof" => Word::AllOf,
"anychild" => Word::AnyChild,
"anyof" => Word::AnyOf,
"body" => Word::Body,
"break" => Word::Break,
"bymode" => Word::ByMode,
"bytimeabsolute" => Word::ByTimeAbsolute,
"bytimerelative" => Word::ByTimeRelative,
"bytrace" => Word::ByTrace,
"comparator" => Word::Comparator,
"contains" => Word::Contains,
"content" => Word::Content,
"contenttype" => Word::ContentType,
"convert" => Word::Convert,
"copy" => Word::Copy,
"count" => Word::Count,
"create" => Word::Create,
"currentdate" => Word::CurrentDate,
"date" => Word::Date,
"days" => Word::Days,
"deleteheader" => Word::DeleteHeader,
"detail" => Word::Detail,
"discard" => Word::Discard,
"domain" => Word::Domain,
"duplicate" => Word::Duplicate,
"else" => Word::Else,
"elsif" => Word::ElsIf,
"enclose" => Word::Enclose,
"encodeurl" => Word::EncodeUrl,
"envelope" => Word::Envelope,
"environment" => Word::Environment,
"ereject" => Word::Ereject,
"error" => Word::Error,
"exists" => Word::Exists,
"extracttext" => Word::ExtractText,
"false" => Word::False,
"fcc" => Word::Fcc,
"fileinto" => Word::FileInto,
"first" => Word::First,
"flags" => Word::Flags,
"foreverypart" => Word::ForEveryPart,
"from" => Word::From,
"global" => Word::Global,
"handle" => Word::Handle,
"hasflag" => Word::HasFlag,
"header" => Word::Header,
"headers" => Word::Headers,
"if" => Word::If,
"ihave" => Word::Ihave,
"importance" => Word::Importance,
"include" => Word::Include,
"index" => Word::Index,
"is" => Word::Is,
"keep" => Word::Keep,
"last" => Word::Last,
"length" => Word::Length,
"list" => Word::List,
"localpart" => Word::LocalPart,
"lower" => Word::Lower,
"lowerfirst" => Word::LowerFirst,
"mailboxexists" => Word::MailboxExists,
"mailboxid" => Word::MailboxId,
"mailboxidexists" => Word::MailboxIdExists,
"matches" => Word::Matches,
"message" => Word::Message,
"metadata" => Word::Metadata,
"metadataexists" => Word::MetadataExists,
"mime" => Word::Mime,
"name" => Word::Name,
"not" => Word::Not,
"notify" => Word::Notify,
"notify_method_capability" => Word::NotifyMethodCapability,
"once" => Word::Once,
"optional" => Word::Optional,
"options" => Word::Options,
"originalzone" => Word::OriginalZone,
"over" => Word::Over,
"param" => Word::Param,
"percent" => Word::Percent,
"personal" => Word::Personal,
"quoteregex" => Word::QuoteRegex,
"quotewildcard" => Word::QuoteWildcard,
"raw" => Word::Raw,
"redirect" => Word::Redirect,
"regex" => Word::Regex,
"reject" => Word::Reject,
"removeflag" => Word::RemoveFlag,
"replace" => Word::Replace,
"require" => Word::Require,
"ret" => Word::Ret,
"return" => Word::Return,
"seconds" => Word::Seconds,
"servermetadata" => Word::ServerMetadata,
"servermetadataexists" => Word::ServerMetadataExists,
"set" => Word::Set,
"setflag" => Word::SetFlag,
"size" => Word::Size,
"spamtest" => Word::SpamTest,
"specialuse" => Word::SpecialUse,
"specialuse_exists" => Word::SpecialUseExists,
"stop" => Word::Stop,
"string" => Word::String,
"subject" => Word::Subject,
"subtype" => Word::Subtype,
"text" => Word::Text,
"true" => Word::True,
"type" => Word::Type,
"under" => Word::Under,
"uniqueid" => Word::UniqueId,
"upper" => Word::Upper,
"upperfirst" => Word::UpperFirst,
"user" => Word::User,
"vacation" => Word::Vacation,
"valid_ext_list" => Word::ValidExtList,
"valid_notify_method" => Word::ValidNotifyMethod,
"value" => Word::Value,
"virustest" => Word::VirusTest,
"zone" => Word::Zone,
"eval" => Word::Eval,
"local" => Word::Local,
"foreveryline" => Word::ForEveryLine,
};
impl Display for Word {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Word::AddFlag => f.write_str("addflag"),
Word::AddHeader => f.write_str("addheader"),
Word::Address => f.write_str("address"),
Word::Addresses => f.write_str("addresses"),
Word::All => f.write_str("all"),
Word::AllOf => f.write_str("allof"),
Word::AnyChild => f.write_str("anychild"),
Word::AnyOf => f.write_str("anyof"),
Word::Body => f.write_str("body"),
Word::Break => f.write_str("break"),
Word::ByMode => f.write_str("bymode"),
Word::ByTimeAbsolute => f.write_str("bytimeabsolute"),
Word::ByTimeRelative => f.write_str("bytimerelative"),
Word::ByTrace => f.write_str("bytrace"),
Word::Comparator => f.write_str("comparator"),
Word::Contains => f.write_str("contains"),
Word::Content => f.write_str("content"),
Word::ContentType => f.write_str("contenttype"),
Word::Convert => f.write_str("convert"),
Word::Copy => f.write_str("copy"),
Word::Count => f.write_str("count"),
Word::Create => f.write_str("create"),
Word::CurrentDate => f.write_str("currentdate"),
Word::Date => f.write_str("date"),
Word::Days => f.write_str("days"),
Word::DeleteHeader => f.write_str("deleteheader"),
Word::Detail => f.write_str("detail"),
Word::Discard => f.write_str("discard"),
Word::Domain => f.write_str("domain"),
Word::Duplicate => f.write_str("duplicate"),
Word::Else => f.write_str("else"),
Word::ElsIf => f.write_str("elsif"),
Word::Enclose => f.write_str("enclose"),
Word::EncodeUrl => f.write_str("encodeurl"),
Word::Envelope => f.write_str("envelope"),
Word::Environment => f.write_str("environment"),
Word::Ereject => f.write_str("ereject"),
Word::Error => f.write_str("error"),
Word::Exists => f.write_str("exists"),
Word::ExtractText => f.write_str("extracttext"),
Word::False => f.write_str("false"),
Word::Fcc => f.write_str("fcc"),
Word::FileInto => f.write_str("fileinto"),
Word::First => f.write_str("first"),
Word::Flags => f.write_str("flags"),
Word::ForEveryPart => f.write_str("foreverypart"),
Word::From => f.write_str("from"),
Word::Global => f.write_str("global"),
Word::Handle => f.write_str("handle"),
Word::HasFlag => f.write_str("hasflag"),
Word::Header => f.write_str("header"),
Word::Headers => f.write_str("headers"),
Word::If => f.write_str("if"),
Word::Ihave => f.write_str("ihave"),
Word::Importance => f.write_str("importance"),
Word::Include => f.write_str("include"),
Word::Index => f.write_str("index"),
Word::Is => f.write_str("is"),
Word::Keep => f.write_str("keep"),
Word::Last => f.write_str("last"),
Word::Length => f.write_str("length"),
Word::List => f.write_str("list"),
Word::LocalPart => f.write_str("localpart"),
Word::Lower => f.write_str("lower"),
Word::LowerFirst => f.write_str("lowerfirst"),
Word::MailboxExists => f.write_str("mailboxexists"),
Word::MailboxId => f.write_str("mailboxid"),
Word::MailboxIdExists => f.write_str("mailboxidexists"),
Word::Matches => f.write_str("matches"),
Word::Message => f.write_str("message"),
Word::Metadata => f.write_str("metadata"),
Word::MetadataExists => f.write_str("metadataexists"),
Word::Mime => f.write_str("mime"),
Word::Name => f.write_str("name"),
Word::Not => f.write_str("not"),
Word::Notify => f.write_str("notify"),
Word::NotifyMethodCapability => f.write_str("notify_method_capability"),
Word::Once => f.write_str("once"),
Word::Optional => f.write_str("optional"),
Word::Options => f.write_str("options"),
Word::OriginalZone => f.write_str("originalzone"),
Word::Over => f.write_str("over"),
Word::Param => f.write_str("param"),
Word::Percent => f.write_str("percent"),
Word::Personal => f.write_str("personal"),
Word::QuoteRegex => f.write_str("quoteregex"),
Word::QuoteWildcard => f.write_str("quotewildcard"),
Word::Raw => f.write_str("raw"),
Word::Redirect => f.write_str("redirect"),
Word::Regex => f.write_str("regex"),
Word::Reject => f.write_str("reject"),
Word::RemoveFlag => f.write_str("removeflag"),
Word::Replace => f.write_str("replace"),
Word::Require => f.write_str("require"),
Word::Ret => f.write_str("ret"),
Word::Return => f.write_str("return"),
Word::Seconds => f.write_str("seconds"),
Word::ServerMetadata => f.write_str("servermetadata"),
Word::ServerMetadataExists => f.write_str("servermetadataexists"),
Word::Set => f.write_str("set"),
Word::SetFlag => f.write_str("setflag"),
Word::Size => f.write_str("size"),
Word::SpamTest => f.write_str("spamtest"),
Word::SpecialUse => f.write_str("specialuse"),
Word::SpecialUseExists => f.write_str("specialuse_exists"),
Word::Stop => f.write_str("stop"),
Word::String => f.write_str("string"),
Word::Subject => f.write_str("subject"),
Word::Subtype => f.write_str("subtype"),
Word::Text => f.write_str("text"),
Word::True => f.write_str("true"),
Word::Type => f.write_str("type"),
Word::Under => f.write_str("under"),
Word::UniqueId => f.write_str("uniqueid"),
Word::Upper => f.write_str("upper"),
Word::UpperFirst => f.write_str("upperfirst"),
Word::User => f.write_str("user"),
Word::Vacation => f.write_str("vacation"),
Word::ValidExtList => f.write_str("valid_ext_list"),
Word::ValidNotifyMethod => f.write_str("valid_notify_method"),
Word::Value => f.write_str("value"),
Word::VirusTest => f.write_str("virustest"),
Word::Zone => f.write_str("zone"),
Word::Eval => f.write_str("eval"),
Word::Local => f.write_str("local"),
Word::ForEveryLine => f.write_str("foreveryline"),
}
}
}

@ -0,0 +1,719 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::{borrow::Cow, fmt::Display};
use ahash::AHashMap;
use mail_parser::HeaderName;
use serde::{Deserialize, Deserializer, Serialize, Serializer};
use crate::sieve::{
runtime::RuntimeError, Compiler, Envelope, ExternalId, FunctionMap, PluginSchema,
PluginSchemaArgument, PluginSchemaTag,
};
use self::{
grammar::{expr::Expression, AddressPart, Capability},
lexer::tokenizer::TokenInfo,
};
pub mod grammar;
pub mod lexer;
#[derive(Debug)]
pub struct CompileError {
line_num: usize,
line_pos: usize,
error_type: ErrorType,
}
#[derive(Debug)]
pub enum ErrorType {
InvalidCharacter(u8),
InvalidNumber(String),
InvalidMatchVariable(usize),
InvalidUnicodeSequence(u32),
InvalidNamespace(String),
InvalidRegex(String),
InvalidExpression(String),
InvalidUtf8String,
InvalidHeaderName,
InvalidArguments,
InvalidAddress,
InvalidURI,
InvalidEnvelope(String),
UnterminatedString,
UnterminatedComment,
UnterminatedMultiline,
UnterminatedBlock,
ScriptTooLong,
StringTooLong,
VariableTooLong,
VariableIsLocal(String),
HeaderTooLong,
ExpectedConstantString,
UnexpectedToken {
expected: Cow<'static, str>,
found: String,
},
UnexpectedEOF,
TooManyNestedBlocks,
TooManyNestedTests,
TooManyNestedForEveryParts,
TooManyIncludes,
LabelAlreadyDefined(String),
LabelUndefined(String),
BreakOutsideLoop,
UnsupportedComparator(String),
DuplicatedParameter,
UndeclaredCapability(Capability),
MissingTag(Cow<'static, str>),
}
impl Default for Compiler {
fn default() -> Self {
Self::new()
}
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum Value {
Text(String),
Number(Number),
Variable(VariableType),
Expression(Vec<Expression>),
Regex(Regex),
List(Vec<Value>),
}
#[derive(Debug, Clone)]
pub struct Regex {
pub regex: fancy_regex::Regex,
pub expr: String,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum VariableType {
Local(usize),
Match(usize),
Global(String),
Environment(String),
Envelope(Envelope),
Header(HeaderVariable),
Part(MessagePart),
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct Transform {
pub variable: Box<VariableType>,
pub functions: Vec<usize>,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct HeaderVariable {
pub name: Vec<HeaderName<'static>>,
pub part: HeaderPart,
pub index_hdr: i32,
pub index_part: i32,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum MessagePart {
TextBody(bool),
HtmlBody(bool),
Contents,
Raw,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum HeaderPart {
Text,
Date,
Id,
Address(AddressPart),
ContentType(ContentTypePart),
Received(ReceivedPart),
Raw,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum ContentTypePart {
Type,
Subtype,
Attribute(String),
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum ReceivedPart {
From(ReceivedHostname),
FromIp,
FromIpRev,
By(ReceivedHostname),
For,
With,
TlsVersion,
TlsCipher,
Id,
Ident,
Via,
Date,
DateRaw,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum ReceivedHostname {
Name,
Ip,
Any,
}
#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
pub enum Number {
Integer(i64),
Float(f64),
}
impl Number {
#[cfg(test)]
pub fn to_float(&self) -> f64 {
match self {
Number::Integer(i) => *i as f64,
Number::Float(fl) => *fl,
}
}
}
impl From<Number> for usize {
fn from(value: Number) -> Self {
match value {
Number::Integer(i) => i as usize,
Number::Float(fl) => fl as usize,
}
}
}
impl Display for Number {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Number::Integer(i) => i.fmt(f),
Number::Float(fl) => fl.fmt(f),
}
}
}
impl Compiler {
pub const VERSION: u32 = 2;
pub fn new() -> Self {
Compiler {
max_script_size: 1024 * 1024,
max_string_size: 4096,
max_variable_name_size: 32,
max_nested_blocks: 15,
max_nested_tests: 15,
max_nested_foreverypart: 3,
max_match_variables: 30,
max_local_variables: 128,
max_header_size: 1024,
max_includes: 6,
plugins: AHashMap::new(),
functions: AHashMap::new(),
}
}
pub fn set_max_header_size(&mut self, size: usize) {
self.max_header_size = size;
}
pub fn with_max_header_size(mut self, size: usize) -> Self {
self.max_header_size = size;
self
}
pub fn set_max_includes(&mut self, size: usize) {
self.max_includes = size;
}
pub fn with_max_includes(mut self, size: usize) -> Self {
self.max_includes = size;
self
}
pub fn set_max_nested_blocks(&mut self, size: usize) {
self.max_nested_blocks = size;
}
pub fn with_max_nested_blocks(mut self, size: usize) -> Self {
self.max_nested_blocks = size;
self
}
pub fn set_max_nested_tests(&mut self, size: usize) {
self.max_nested_tests = size;
}
pub fn with_max_nested_tests(mut self, size: usize) -> Self {
self.max_nested_tests = size;
self
}
pub fn set_max_nested_foreverypart(&mut self, size: usize) {
self.max_nested_foreverypart = size;
}
pub fn with_max_nested_foreverypart(mut self, size: usize) -> Self {
self.max_nested_foreverypart = size;
self
}
pub fn set_max_script_size(&mut self, size: usize) {
self.max_script_size = size;
}
pub fn with_max_script_size(mut self, size: usize) -> Self {
self.max_script_size = size;
self
}
pub fn set_max_string_size(&mut self, size: usize) {
self.max_string_size = size;
}
pub fn with_max_string_size(mut self, size: usize) -> Self {
self.max_string_size = size;
self
}
pub fn set_max_variable_name_size(&mut self, size: usize) {
self.max_variable_name_size = size;
}
pub fn with_max_variable_name_size(mut self, size: usize) -> Self {
self.max_variable_name_size = size;
self
}
pub fn set_max_match_variables(&mut self, size: usize) {
self.max_match_variables = size;
}
pub fn with_max_match_variables(mut self, size: usize) -> Self {
self.max_match_variables = size;
self
}
pub fn set_max_local_variables(&mut self, size: usize) {
self.max_local_variables = size;
}
pub fn with_max_local_variables(mut self, size: usize) -> Self {
self.max_local_variables = size;
self
}
pub fn register_plugin(&mut self, name: impl Into<String>) -> &mut PluginSchema {
let id = self.plugins.len() as ExternalId;
self.plugins
.entry(name.into())
.or_insert_with(|| PluginSchema {
id,
tags: AHashMap::new(),
arguments: Vec::new(),
})
}
pub fn register_functions(mut self, fnc_map: &mut FunctionMap) -> Self {
self.functions = std::mem::take(&mut fnc_map.map);
self
}
}
impl PluginSchema {
pub fn with_id(&mut self, id: ExternalId) -> &mut Self {
self.id = id;
self
}
pub fn with_string_argument(&mut self) -> &mut Self {
self.arguments.push(PluginSchemaArgument::Text);
self
}
pub fn with_number_argument(&mut self) -> &mut Self {
self.arguments.push(PluginSchemaArgument::Number);
self
}
pub fn with_regex_argument(&mut self) -> &mut Self {
self.arguments.push(PluginSchemaArgument::Regex);
self
}
pub fn with_variable_argument(&mut self) -> &mut Self {
self.arguments.push(PluginSchemaArgument::Variable);
self
}
pub fn with_string_array_argument(&mut self) -> &mut Self {
self.arguments.push(PluginSchemaArgument::Array(Box::new(
PluginSchemaArgument::Text,
)));
self
}
pub fn with_number_array_argument(&mut self) -> &mut Self {
self.arguments.push(PluginSchemaArgument::Array(Box::new(
PluginSchemaArgument::Number,
)));
self
}
pub fn with_regex_array_argument(&mut self) -> &mut Self {
self.arguments.push(PluginSchemaArgument::Array(Box::new(
PluginSchemaArgument::Regex,
)));
self
}
pub fn with_variable_array_argument(&mut self) -> &mut Self {
self.arguments.push(PluginSchemaArgument::Array(Box::new(
PluginSchemaArgument::Variable,
)));
self
}
pub fn with_argument(&mut self, argument: PluginSchemaArgument) -> &mut Self {
self.arguments.push(argument);
self
}
pub fn with_tagged_argument(
&mut self,
tag: impl Into<String>,
argument: PluginSchemaArgument,
) -> &mut Self {
let id = self.tags.len() as ExternalId;
self.tags.insert(
tag.into(),
PluginSchemaTag {
id,
argument: argument.into(),
},
);
self
}
pub fn with_tagged_string_argument(&mut self, tag: impl Into<String>) -> &mut Self {
self.with_tagged_argument(tag, PluginSchemaArgument::Text)
}
pub fn with_tagged_number_argument(&mut self, tag: impl Into<String>) -> &mut Self {
self.with_tagged_argument(tag, PluginSchemaArgument::Number)
}
pub fn with_tagged_regex_argument(&mut self, tag: impl Into<String>) -> &mut Self {
self.with_tagged_argument(tag, PluginSchemaArgument::Regex)
}
pub fn with_tagged_variable_argument(&mut self, tag: impl Into<String>) -> &mut Self {
self.with_tagged_argument(tag, PluginSchemaArgument::Variable)
}
pub fn with_tagged_string_array_argument(&mut self, tag: impl Into<String>) -> &mut Self {
self.with_tagged_argument(
tag,
PluginSchemaArgument::Array(Box::new(PluginSchemaArgument::Text)),
)
}
pub fn with_tagged_number_array_argument(&mut self, tag: impl Into<String>) -> &mut Self {
self.with_tagged_argument(
tag,
PluginSchemaArgument::Array(Box::new(PluginSchemaArgument::Number)),
)
}
pub fn with_tagged_regex_array_argument(&mut self, tag: impl Into<String>) -> &mut Self {
self.with_tagged_argument(
tag,
PluginSchemaArgument::Array(Box::new(PluginSchemaArgument::Regex)),
)
}
pub fn with_tagged_variable_array_argument(&mut self, tag: impl Into<String>) -> &mut Self {
self.with_tagged_argument(
tag,
PluginSchemaArgument::Array(Box::new(PluginSchemaArgument::Variable)),
)
}
pub fn with_tag(&mut self, tag: impl Into<String>) -> &mut Self {
let id = self.tags.len() as ExternalId;
self.tags
.insert(tag.into(), PluginSchemaTag { id, argument: None });
self
}
}
impl CompileError {
pub fn line_num(&self) -> usize {
self.line_num
}
pub fn line_pos(&self) -> usize {
self.line_pos
}
pub fn error_type(&self) -> &ErrorType {
&self.error_type
}
}
impl PartialEq for Regex {
fn eq(&self, other: &Self) -> bool {
self.expr == other.expr
}
}
impl Eq for Regex {}
impl Serialize for Regex {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
self.expr.serialize(serializer)
}
}
impl<'de> Deserialize<'de> for Regex {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
<String>::deserialize(deserializer).and_then(|expr| {
fancy_regex::Regex::new(&expr)
.map(|regex| Regex { regex, expr })
.map_err(|err| serde::de::Error::custom(err.to_string()))
})
}
}
impl TokenInfo {
pub fn expected(self, expected: impl Into<Cow<'static, str>>) -> CompileError {
CompileError {
line_num: self.line_num,
line_pos: self.line_pos,
error_type: ErrorType::UnexpectedToken {
expected: expected.into(),
found: self.token.to_string(),
},
}
}
pub fn missing_tag(self, tag: impl Into<Cow<'static, str>>) -> CompileError {
CompileError {
line_num: self.line_num,
line_pos: self.line_pos,
error_type: ErrorType::MissingTag(tag.into()),
}
}
pub fn custom(self, error_type: ErrorType) -> CompileError {
CompileError {
line_num: self.line_num,
line_pos: self.line_pos,
error_type,
}
}
}
impl Display for CompileError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match &self.error_type() {
ErrorType::InvalidCharacter(value) => {
write!(f, "Invalid character {:?}", char::from(*value))
}
ErrorType::InvalidNumber(value) => write!(f, "Invalid number {value:?}"),
ErrorType::InvalidMatchVariable(value) => {
write!(f, "Match variable {value} out of range")
}
ErrorType::InvalidUnicodeSequence(value) => {
write!(f, "Invalid Unicode sequence {value:04x}")
}
ErrorType::InvalidNamespace(value) => write!(f, "Invalid namespace {value:?}"),
ErrorType::InvalidRegex(value) => write!(f, "Invalid regular expression {value:?}"),
ErrorType::InvalidExpression(value) => write!(f, "Invalid expression {value}"),
ErrorType::InvalidUtf8String => write!(f, "Invalid UTF-8 string"),
ErrorType::InvalidHeaderName => write!(f, "Invalid header name"),
ErrorType::InvalidArguments => write!(f, "Invalid Arguments"),
ErrorType::InvalidAddress => write!(f, "Invalid Address"),
ErrorType::InvalidURI => write!(f, "Invalid URI"),
ErrorType::InvalidEnvelope(value) => write!(f, "Invalid envelope {value:?}"),
ErrorType::UnterminatedString => write!(f, "Unterminated string"),
ErrorType::UnterminatedComment => write!(f, "Unterminated comment"),
ErrorType::UnterminatedMultiline => write!(f, "Unterminated multi-line string"),
ErrorType::UnterminatedBlock => write!(f, "Unterminated block"),
ErrorType::ScriptTooLong => write!(f, "Sieve script is too large"),
ErrorType::StringTooLong => write!(f, "String is too long"),
ErrorType::VariableTooLong => write!(f, "Variable name is too long"),
ErrorType::VariableIsLocal(value) => {
write!(f, "Variable {value:?} was already defined as local")
}
ErrorType::HeaderTooLong => write!(f, "Header value is too long"),
ErrorType::ExpectedConstantString => write!(f, "Expected a constant string"),
ErrorType::UnexpectedToken { expected, found } => {
write!(f, "Expected token {expected:?} but found {found:?}")
}
ErrorType::UnexpectedEOF => write!(f, "Unexpected end of file"),
ErrorType::TooManyNestedBlocks => write!(f, "Too many nested blocks"),
ErrorType::TooManyNestedTests => write!(f, "Too many nested tests"),
ErrorType::TooManyNestedForEveryParts => {
write!(f, "Too many nested foreverypart blocks")
}
ErrorType::TooManyIncludes => write!(f, "Too many includes"),
ErrorType::LabelAlreadyDefined(value) => write!(f, "Label {value:?} already defined"),
ErrorType::LabelUndefined(value) => write!(f, "Label {value:?} does not exist"),
ErrorType::BreakOutsideLoop => write!(f, "Break used outside of foreverypart loop"),
ErrorType::UnsupportedComparator(value) => {
write!(f, "Comparator {value:?} is not supported")
}
ErrorType::DuplicatedParameter => write!(f, "Duplicated argument"),
ErrorType::UndeclaredCapability(value) => {
write!(f, "Undeclared capability '{value}'")
}
ErrorType::MissingTag(value) => write!(f, "Missing tag {value:?}"),
}?;
write!(
f,
" at line {}, column {}.",
self.line_num(),
self.line_pos()
)
}
}
impl Display for RuntimeError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
RuntimeError::TooManyIncludes => write!(f, ""),
RuntimeError::InvalidInstruction(value) => write!(
f,
"Script executed invalid instruction {:?} at line {}, column {}.",
value.name(),
value.line_pos(),
value.line_num()
),
RuntimeError::ScriptErrorMessage(value) => {
write!(f, "Script reported error {value:?}.")
}
RuntimeError::CapabilityNotAllowed(value) => {
write!(f, "Capability '{value}' has been disabled.")
}
RuntimeError::CapabilityNotSupported(value) => {
write!(f, "Capability '{value}' not supported.")
}
RuntimeError::CPULimitReached => write!(
f,
"Script exceeded the maximum number of instructions allowed to execute."
),
}
}
}
#[cfg(test)]
mod tests {
use std::{fs, path::PathBuf};
use crate::sieve::Compiler;
#[test]
fn parse_rfc() {
let mut test_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
test_dir.push("tests");
test_dir.push("rfcs");
let mut tests_run = 0;
let mut compiler = Compiler::new().with_max_nested_foreverypart(10);
compiler
.register_plugin("plugin1")
.with_tag("tag1")
.with_tag("tag2")
.with_tagged_string_argument("string_arg")
.with_number_argument()
.with_string_array_argument();
compiler
.register_plugin("plugin2")
.with_tagged_number_array_argument("array_arg")
.with_regex_array_argument();
for file_name in fs::read_dir(&test_dir).unwrap() {
let mut file_name = file_name.unwrap().path();
if file_name.extension().map_or(false, |e| e == "sieve") {
println!("Parsing {}", file_name.display());
/*if !file_name
.file_name()
.unwrap()
.to_str()
.unwrap()
.contains("plugins")
{
let test = "true";
continue;
}*/
let script = fs::read(&file_name).unwrap();
file_name.set_extension("json");
let expected_result = fs::read(&file_name).unwrap();
tests_run += 1;
let sieve = compiler.compile(&script).unwrap();
let json_sieve = serde_json::to_string_pretty(
&sieve
.instructions
.into_iter()
.enumerate()
.collect::<Vec<_>>(),
)
.unwrap();
if json_sieve.as_bytes() != expected_result {
file_name.set_extension("failed");
fs::write(&file_name, json_sieve.as_bytes()).unwrap();
panic!("Test failed, parsed sieve saved to {}", file_name.display());
}
}
}
assert!(
tests_run > 0,
"Did not find any tests to run in folder {}.",
test_dir.display()
);
}
}

@ -0,0 +1,196 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use sieve::{runtime::RuntimeError, Compiler, Event, Input, Runtime};
fn main() {
let text_script = br#"
require ["fileinto", "body", "imap4flags"];
if body :contains "tps" {
setflag "$tps_reports";
}
if header :matches "List-ID" "*<*@*" {
fileinto "INBOX.lists.${2}"; stop;
}
"#;
let raw_message = r#"From: Sales Mailing List <list-sales@example.org>
To: John Doe <jdoe@example.org>
List-ID: <sales@example.org>
Subject: TPS Reports
We're putting new coversheets on all the TPS reports before they go out now.
So if you could go ahead and try to remember to do that from now on, that'd be great. All right!
"#;
// Compile
let compiler = Compiler::new();
let script = compiler.compile(text_script).unwrap();
// Build runtime
let runtime = Runtime::new();
// Create filter instance
let mut instance = runtime.filter(raw_message.as_bytes());
let mut input = Input::script("my-script", script);
let mut messages: Vec<String> = Vec::new();
// Start event loop
while let Some(result) = instance.run(input) {
match result {
Ok(event) => match event {
Event::IncludeScript { name, optional } => {
// NOTE: Just for demonstration purposes, script name needs to be validated first.
if let Ok(bytes) = std::fs::read(name.as_str()) {
let script = compiler.compile(&bytes).unwrap();
input = Input::script(name, script);
} else if optional {
input = Input::False;
} else {
panic!("Script {name} not found.");
}
}
Event::MailboxExists { .. } => {
// Set to true if the mailbox exists
input = false.into();
}
Event::ListContains { .. } => {
// Set to true if the list(s) contains an entry
input = false.into();
}
Event::DuplicateId { .. } => {
// Set to true if the ID is duplicate
input = false.into();
}
Event::Plugin { id, arguments } => {
println!("Script executed plugin {id} with parameters {arguments:?}");
// Set to true if the script succeeded
input = false.into();
}
Event::SetEnvelope { envelope, value } => {
println!("Set envelope {envelope:?} to {value:?}");
input = true.into();
}
Event::Keep { flags, message_id } => {
println!(
"Keep message '{}' with flags {:?}.",
if message_id > 0 {
messages[message_id - 1].as_str()
} else {
raw_message
},
flags
);
input = true.into();
}
Event::Discard => {
println!("Discard message.");
input = true.into();
}
Event::Reject { reason, .. } => {
println!("Reject message with reason {reason:?}.");
input = true.into();
}
Event::FileInto {
folder,
flags,
message_id,
..
} => {
println!(
"File message '{}' in folder {:?} with flags {:?}.",
if message_id > 0 {
messages[message_id - 1].as_str()
} else {
raw_message
},
folder,
flags
);
input = true.into();
}
Event::SendMessage {
recipient,
message_id,
..
} => {
println!(
"Send message '{}' to {:?}.",
if message_id > 0 {
messages[message_id - 1].as_str()
} else {
raw_message
},
recipient
);
input = true.into();
}
Event::Notify {
message, method, ..
} => {
println!("Notify URI {method:?} with message {message:?}");
input = true.into();
}
Event::CreatedMessage { message, .. } => {
messages.push(String::from_utf8(message).unwrap());
input = true.into();
}
#[cfg(test)]
_ => unreachable!(),
},
Err(error) => {
match error {
RuntimeError::TooManyIncludes => {
eprintln!("Too many included scripts.");
}
RuntimeError::InvalidInstruction(instruction) => {
eprintln!(
"Invalid instruction {:?} found at {}:{}.",
instruction.name(),
instruction.line_num(),
instruction.line_pos()
);
}
RuntimeError::ScriptErrorMessage(message) => {
eprintln!("Script called the 'error' function with {message:?}");
}
RuntimeError::CapabilityNotAllowed(capability) => {
eprintln!(
"Capability {capability:?} has been disabled by the administrator.",
);
}
RuntimeError::CapabilityNotSupported(capability) => {
eprintln!("Capability {capability:?} not supported.");
}
RuntimeError::CPULimitReached => {
eprintln!("Script exceeded the configured CPU limit.");
}
}
input = true.into();
}
}
}
}

@ -0,0 +1,41 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use sieve::{Compiler, Sieve};
fn main() {
let script = br#"if header :matches \"List-ID\" \"*<*@*\" {
fileinto \"INBOX.lists.${2}\"; stop;
}"#;
// Compile
let compiled_script = Compiler::new().compile(script).unwrap();
// Serialize
let serialized_script = compiled_script.serialize().unwrap();
// Deserialize
let deserialized_script = Sieve::deserialize(&serialized_script).unwrap();
assert_eq!(compiled_script, deserialized_script);
}

@ -24,6 +24,10 @@ use crate::utils::parsec::*;
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct RuleBlock(pub Vec<Rule>);
pub mod compiler;
pub mod lib;
pub mod runtime;
/*
MATCH-TYPE =/ COUNT / VALUE

File diff suppressed because it is too large Load Diff

@ -0,0 +1,116 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use mail_parser::{
decoders::html::{html_to_text, text_to_html},
Encoding, Header, HeaderName, HeaderValue, MimeHeaders, PartType,
};
use crate::sieve::{
compiler::grammar::actions::action_convert::Convert, runtime::tests::TestResult, Context,
};
#[derive(Clone, Copy)]
enum Conversion {
TextToHtml,
TextPlainToHtml,
HtmlToText,
}
impl Convert {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let from_media_type = ctx.eval_value(&self.from_media_type).into_cow();
let to_media_type = ctx.eval_value(&self.to_media_type).into_cow();
if from_media_type.eq_ignore_ascii_case(to_media_type.as_ref()) {
return TestResult::Bool(false ^ self.is_not);
}
let conversion = if (from_media_type.eq_ignore_ascii_case("text")
|| from_media_type.starts_with("text/"))
&& to_media_type.eq_ignore_ascii_case("text/html")
{
if from_media_type.eq_ignore_ascii_case("text") {
Conversion::TextPlainToHtml
} else {
Conversion::TextToHtml
}
} else if from_media_type.eq_ignore_ascii_case("text/html")
&& to_media_type.eq_ignore_ascii_case("text/plain")
{
Conversion::HtmlToText
} else {
return TestResult::Bool(false ^ self.is_not);
};
let mut did_convert = false;
for part in ctx.message.parts.iter_mut() {
let (new_body, ct) = match (&part.body, conversion) {
(PartType::Html(html), Conversion::HtmlToText) => (
PartType::Text(html_to_text(html.as_ref()).into()),
"text/plain; charset=utf8",
),
(PartType::Text(text), Conversion::TextToHtml) => (
PartType::Html(text_to_html(text.as_ref()).into()),
"text/html; charset=utf8",
),
(PartType::Text(text), Conversion::TextPlainToHtml)
if part
.content_type()
.and_then(|ct| ct.c_subtype.as_ref())
.map_or(false, |st| st.eq_ignore_ascii_case("plain")) =>
{
(
PartType::Html(text_to_html(text.as_ref()).into()),
"text/html; charset=utf8",
)
}
_ => {
continue;
}
};
part.headers = vec![Header {
name: HeaderName::Other("Content-Type".into()),
value: HeaderValue::Text(ct.to_string().into()),
offset_start: 0,
offset_end: 0,
offset_field: 0,
}];
ctx.message_size = ctx.message_size + ct.len() + new_body.len() + 16
- (if part.offset_body != 0 {
part.offset_end - part.offset_header
} else {
part.body.len()
});
part.offset_body = 0;
part.body = new_body;
part.encoding = Encoding::QuotedPrintable; //Used as non-mime flag
did_convert = true;
}
if did_convert {
ctx.has_changes = true;
}
TestResult::Bool(did_convert ^ self.is_not)
}
}

@ -0,0 +1,202 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::borrow::Cow;
use mail_parser::{Header, HeaderName, HeaderValue};
use crate::sieve::{
compiler::grammar::{
actions::{
action_editheader::{AddHeader, DeleteHeader},
action_mime::MimeOpts,
},
MatchType,
},
runtime::Variable,
Context,
};
impl AddHeader {
pub(crate) fn exec(&self, ctx: &mut Context) {
let header_name_ = ctx.eval_value(&self.field_name).into_cow();
let mut header_name = String::with_capacity(header_name_.len());
for ch in header_name_.chars() {
if ch.is_alphanumeric() || ch == '-' {
header_name.push(ch);
}
}
if !header_name.is_empty() {
if let Some(header_name) = HeaderName::parse(header_name) {
if !ctx.runtime.protected_headers.contains(&header_name) {
ctx.has_changes = true;
ctx.insert_header(
ctx.part,
header_name,
ctx.eval_value(&self.value)
.into_cow()
.as_ref()
.remove_crlf(ctx.runtime.max_header_size),
self.last,
)
}
}
}
}
}
impl DeleteHeader {
pub(crate) fn exec(&self, ctx: &mut Context) {
let header_name = if let Some(header_name) =
HeaderName::parse(ctx.eval_value(&self.field_name).into_cow())
{
header_name
} else {
return;
};
let value_patterns = ctx.eval_values(&self.value_patterns);
let mut deleted_headers = Vec::new();
let mut deleted_bytes = 0;
if ctx.runtime.protected_headers.contains(&header_name) {
return;
}
ctx.find_headers(
&[header_name],
self.index,
self.mime_anychild,
|header, part_id, header_pos| {
if !value_patterns.is_empty() {
let did_match = ctx.find_header_values(header, &MimeOpts::None, |value| {
for (pattern_expr, pattern) in
value_patterns.iter().zip(self.value_patterns.iter())
{
if match &self.match_type {
MatchType::Is => {
self.comparator.is(&Variable::from(value), pattern_expr)
}
MatchType::Contains => self
.comparator
.contains(value, pattern_expr.to_cow().as_ref()),
MatchType::Value(rel_match) => self.comparator.relational(
rel_match,
&Variable::from(value),
pattern_expr,
),
MatchType::Matches(_) => self.comparator.matches(
value,
pattern_expr.to_cow().as_ref(),
0,
&mut Vec::new(),
),
MatchType::Regex(_) => self.comparator.regex(
pattern,
pattern_expr,
value,
0,
&mut Vec::new(),
),
MatchType::Count(_) => false,
MatchType::List => false,
} {
return true;
}
}
false
});
if !did_match {
return false;
}
}
if header.offset_end != 0 {
deleted_bytes += header.offset_end - header.offset_field;
} else {
deleted_bytes += header.name.as_str().len() + header.value.len() + 4;
}
deleted_headers.push((part_id, header_pos));
false
},
);
if !deleted_headers.is_empty() {
ctx.has_changes = true;
for (part_id, header_pos) in deleted_headers.iter().rev() {
ctx.message.parts[*part_id].headers.remove(*header_pos);
}
}
ctx.message_size -= deleted_bytes;
}
}
pub(crate) trait RemoveCrLf {
fn remove_crlf(&self, max_len: usize) -> String;
}
impl RemoveCrLf for &str {
fn remove_crlf(&self, max_len: usize) -> String {
let mut header_value = String::with_capacity(self.len());
for ch in self.chars() {
if !['\n', '\r'].contains(&ch) {
if header_value.len() + ch.len_utf8() <= max_len {
header_value.push(ch);
} else {
return header_value;
}
}
}
header_value
}
}
impl<'x> Context<'x> {
pub(crate) fn insert_header(
&mut self,
part_id: usize,
header_name: HeaderName<'x>,
header_value: impl Into<Cow<'static, str>>,
last: bool,
) {
let header_value = header_value.into();
self.message_size += header_name.len() + header_value.len() + 4;
let header = Header {
name: header_name,
value: HeaderValue::Text(header_value),
offset_start: 0,
offset_end: 0,
offset_field: 0,
};
if !last {
self.message.parts[part_id].headers.insert(0, header);
} else {
self.message.parts[part_id].headers.push(header);
}
}
}

@ -0,0 +1,57 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::{compiler::grammar::actions::action_fileinto::FileInto, Context, Event};
impl FileInto {
pub(crate) fn exec(&self, ctx: &mut Context) {
let folder = ctx.eval_value(&self.folder).into_string();
let mut events = Vec::with_capacity(2);
if let Some(event) = ctx.build_message_id() {
events.push(event);
}
if !self.copy
&& !matches!(&ctx.final_event, Some(Event::Keep { flags, .. }) if !flags.is_empty())
{
ctx.final_event = None;
}
events.push(Event::FileInto {
folder,
flags: ctx.get_local_or_global_flags(&self.flags),
mailbox_id: self
.mailbox_id
.as_ref()
.map(|mi| ctx.eval_value(mi).into_string()),
special_use: self
.special_use
.as_ref()
.map(|su| ctx.eval_value(su).into_string()),
create: self.create,
message_id: ctx.main_message_id,
});
ctx.queued_events = events.into_iter();
}
}

@ -0,0 +1,156 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::{
compiler::{
grammar::actions::action_flags::{Action, EditFlags},
Value, VariableType,
},
Context,
};
impl EditFlags {
pub(crate) fn exec(&self, ctx: &mut Context) {
let mut var_name_ = None;
let var_name = self.name.as_ref().unwrap_or_else(|| {
var_name_.get_or_insert_with(|| VariableType::Global("__flags".to_string()))
});
match &self.action {
Action::Set => {
let mut flags_lc = Vec::new();
let mut flags = String::new();
ctx.tokenize_flags(&self.flags, |flag| {
let flag_lc = flag.to_lowercase();
if !flags_lc.contains(&flag_lc) {
if !flags.is_empty() {
flags.push(' ');
}
flags.push_str(flag);
flags_lc.push(flag_lc);
}
false
});
ctx.set_variable(var_name, flags.into());
}
Action::Add => {
let mut new_flags = ctx
.get_variable(var_name)
.map(|v| v.to_cow())
.unwrap_or_default()
.into_owned();
let mut current_flags = new_flags
.split(' ')
.map(|f| f.to_lowercase())
.collect::<Vec<_>>();
ctx.tokenize_flags(&self.flags, |flag| {
let flag_lc = flag.to_lowercase();
if !current_flags.contains(&flag_lc) {
if !new_flags.is_empty() {
new_flags.push(' ');
}
new_flags.push_str(flag);
current_flags.push(flag_lc);
}
false
});
ctx.set_variable(var_name, new_flags.into());
}
Action::Remove => {
let mut current_flags = Vec::new();
let mut current_flags_lc = Vec::new();
let flags = ctx
.get_variable(var_name)
.map(|v| v.to_cow().into_owned())
.unwrap_or_default();
for flag in flags.split(' ') {
current_flags.push(flag);
current_flags_lc.push(flag.to_lowercase());
}
ctx.tokenize_flags(&self.flags, |flag| {
let flag = flag.to_lowercase();
if let Some(pos) = current_flags_lc.iter().position(|lflag| lflag == &flag) {
current_flags.swap_remove(pos);
current_flags_lc.swap_remove(pos);
}
false
});
ctx.set_variable(var_name, current_flags.join(" ").into());
}
}
}
}
impl<'x> Context<'x> {
pub(crate) fn tokenize_flags(
&self,
strings: &[Value],
mut cb: impl FnMut(&str) -> bool,
) -> bool {
for (pos, string) in strings.iter().enumerate() {
let flag = self.eval_value(string).into_cow();
if !flag.is_empty() {
if pos == 0 && strings.len() == 1 {
for flag in flag.split_ascii_whitespace() {
if !flag.is_empty() && cb(flag) {
return true;
}
}
} else if cb(flag.trim()) {
return true;
}
}
}
false
}
pub(crate) fn get_local_flags(&self, strings: &[Value]) -> Vec<String> {
let mut flags = Vec::new();
self.tokenize_flags(strings, |flag| {
flags.push(flag.to_string());
false
});
flags
}
pub(crate) fn get_global_flags(&self) -> Vec<String> {
match self.vars_global.get("__flags") {
Some(flags) if !flags.is_empty() => flags
.to_cow()
.split(' ')
.map(|s| s.to_string())
.collect::<Vec<String>>(),
_ => Vec::new(),
}
}
pub(crate) fn get_local_or_global_flags(&self, strings: &[Value]) -> Vec<String> {
if strings.is_empty() {
self.get_global_flags()
} else {
self.get_local_flags(strings)
}
}
}

@ -0,0 +1,70 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::sync::Arc;
use crate::sieve::{
compiler::grammar::actions::action_include::{Include, Location},
runtime::RuntimeError,
Context, Event, Script, Sieve,
};
pub(crate) enum IncludeResult {
Cached(Arc<Sieve>),
Event(Event),
Error(RuntimeError),
None,
}
impl Include {
pub(crate) fn exec(&self, ctx: &Context) -> IncludeResult {
let script_name = ctx.eval_value(&self.value);
if !script_name.is_empty() {
let script_name = if self.location == Location::Global {
Script::Global(script_name.into_string())
} else {
Script::Personal(script_name.into_string())
};
let cached_script = ctx.script_cache.get(&script_name);
if !self.once || cached_script.is_none() {
if ctx.script_stack.len() < ctx.runtime.max_nested_includes {
if let Some(script) = cached_script
.or_else(|| ctx.runtime.include_scripts.get(script_name.as_str()))
{
return IncludeResult::Cached(script.clone());
} else {
return IncludeResult::Event(Event::IncludeScript {
name: script_name,
optional: self.optional,
});
}
} else {
return IncludeResult::Error(RuntimeError::TooManyIncludes);
}
}
}
IncludeResult::None
}
}

@ -0,0 +1,593 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::cmp::Reverse;
use mail_parser::{
decoders::html::html_to_text, Encoding, HeaderName, Message, MessagePart, PartType,
};
use crate::sieve::{
compiler::{
grammar::actions::action_mime::{Enclose, ExtractText, Replace},
VariableType,
},
Context, Event,
};
use super::action_editheader::RemoveCrLf;
#[cfg(not(test))]
use mail_builder::headers::message_id::generate_message_id_header;
impl Replace {
pub(crate) fn exec(&self, ctx: &mut Context) {
// Delete children parts
let mut part_ids = ctx.find_nested_parts_ids(false);
part_ids.sort_unstable_by_key(|a| Reverse(*a));
for part_id in part_ids {
ctx.message.parts.remove(part_id);
}
ctx.has_changes = true;
// Update part
let body = ctx.eval_value(&self.replacement).into_string();
let body_len = body.len();
let part = &mut ctx.message.parts[ctx.part];
ctx.message_size = ctx.message_size + body_len
- (if part.offset_body != 0 {
part.offset_end - part.offset_header
} else {
part.body.len()
});
part.body = PartType::Text(body.into());
part.encoding = if !self.mime {
Encoding::QuotedPrintable
} else {
Encoding::None
};
part.offset_body = 0;
let prev_headers = std::mem::take(&mut part.headers);
let mut add_date = true;
if ctx.part == 0 {
for mut header in prev_headers {
let mut size = header.offset_end - header.offset_field;
match &header.name {
HeaderName::Subject => {
if self.subject.is_some() {
header.name = HeaderName::Other("Original-Subject".into());
header.offset_field = header.offset_start;
size += "Original-".len();
}
}
HeaderName::From => {
if self.from.is_some() {
header.name = HeaderName::Other("Original-From".into());
header.offset_field = header.offset_start;
size += "Original-".len();
}
}
HeaderName::To | HeaderName::Cc | HeaderName::Bcc | HeaderName::Received => (),
HeaderName::Date => {
add_date = false;
}
_ => continue,
}
ctx.message_size += size;
part.headers.push(header);
}
// Add From
let mut add_from = true;
if let Some(from) = self.from.as_ref().map(|f| ctx.eval_value(f)) {
if !from.is_empty() {
ctx.insert_header(
0,
HeaderName::Other("From".into()),
from.into_cow()
.as_ref()
.remove_crlf(ctx.runtime.max_header_size),
true,
);
add_from = false;
}
}
if add_from {
ctx.insert_header(
0,
HeaderName::Other("From".to_string().into()),
ctx.user_from_field(),
true,
);
}
// Add Subject
if let Some(subject) = self.subject.as_ref().map(|f| ctx.eval_value(f)) {
if !subject.is_empty() {
ctx.insert_header(
0,
HeaderName::Other("Subject".into()),
subject
.into_cow()
.as_ref()
.remove_crlf(ctx.runtime.max_header_size),
true,
);
}
}
// Add Date
if add_date {
#[cfg(not(test))]
let header_value = mail_builder::headers::date::Date::now().to_rfc822();
#[cfg(test)]
let header_value = "Tue, 20 Nov 2022 05:14:20 -0300".to_string();
ctx.insert_header(
0,
HeaderName::Other("Date".to_string().into()),
header_value,
true,
);
}
// Add Message-ID
let mut header_value = Vec::with_capacity(20);
#[cfg(not(test))]
generate_message_id_header(&mut header_value, &ctx.runtime.local_hostname).unwrap();
#[cfg(test)]
header_value.extend_from_slice(b"<auto-generated@message-id>");
ctx.insert_header(
0,
HeaderName::Other("Message-ID".to_string().into()),
String::from_utf8(header_value).unwrap(),
true,
);
}
if !self.mime {
ctx.insert_header(
ctx.part,
HeaderName::Other("Content-Type".into()),
"text/plain; charset=utf-8".to_string(),
true,
);
}
}
}
impl Enclose {
pub(crate) fn exec(&self, ctx: &mut Context) {
let body = ctx.eval_value(&self.value).into_string();
let subject = self
.subject
.as_ref()
.map(|s| {
ctx.eval_value(s)
.into_cow()
.as_ref()
.remove_crlf(ctx.runtime.max_header_size)
})
.or_else(|| ctx.message.subject().map(|s| s.to_string()))
.unwrap_or_default();
let message = std::mem::take(&mut ctx.message);
#[cfg(test)]
let boundary = make_test_boundary();
#[cfg(not(test))]
let boundary = mail_builder::mime::make_boundary(".");
ctx.message_size += ((boundary.len() + 6) * 3) + body.len() + 2;
ctx.part = 0;
ctx.has_changes = true;
ctx.message = Message {
html_body: Vec::with_capacity(0),
text_body: Vec::with_capacity(0),
attachments: Vec::with_capacity(0),
parts: vec![
MessagePart {
headers: vec![],
is_encoding_problem: false,
body: PartType::Multipart(vec![1, 2]),
encoding: Encoding::None,
offset_header: 0,
offset_body: 0,
offset_end: 0,
},
MessagePart {
headers: vec![],
is_encoding_problem: false,
body: PartType::Text(body.into()),
encoding: Encoding::QuotedPrintable, // Flag non-mime part
offset_header: 0,
offset_body: 0,
offset_end: 0,
},
MessagePart {
headers: vec![],
is_encoding_problem: false,
body: PartType::Message(message),
encoding: Encoding::QuotedPrintable, // Flag non-mime part
offset_header: 0,
offset_body: 0,
offset_end: 0,
},
],
raw_message: b""[..].into(),
};
ctx.insert_header(
0,
HeaderName::Other("Content-Type".into()),
format!("multipart/mixed; boundary=\"{boundary}\""),
true,
);
ctx.insert_header(0, HeaderName::Other("Subject".into()), subject, true);
ctx.insert_header(
1,
HeaderName::Other("Content-Type".into()),
"text/plain; charset=utf-8",
true,
);
ctx.insert_header(
2,
HeaderName::Other("Content-Type".into()),
"message/rfc822",
true,
);
let mut add_date = true;
let mut add_message_id = true;
let mut add_from = true;
for header in &self.headers {
let header = ctx.eval_value(header);
if let Some((mut header_name, mut header_value)) =
header.into_cow().as_ref().split_once(':')
{
header_name = header_name.trim();
header_value = header_value.trim();
if !header_value.is_empty() {
if let Some(name) = HeaderName::parse(header_name) {
if !ctx.runtime.protected_headers.contains(&name) {
match &name {
HeaderName::Date => {
add_date = false;
}
HeaderName::From => {
add_from = false;
}
HeaderName::MessageId => {
add_message_id = false;
}
_ => (),
}
ctx.insert_header(
0,
HeaderName::Other(header_name.to_string().into()),
header_value.remove_crlf(ctx.runtime.max_header_size),
true,
);
}
}
}
}
}
if add_from {
ctx.insert_header(
0,
HeaderName::Other("From".to_string().into()),
ctx.user_from_field(),
true,
);
}
if add_date {
#[cfg(not(test))]
let header_value = mail_builder::headers::date::Date::now().to_rfc822();
#[cfg(test)]
let header_value = "Tue, 20 Nov 2022 05:14:20 -0300".to_string();
ctx.insert_header(
0,
HeaderName::Other("Date".to_string().into()),
header_value,
true,
);
}
if add_message_id {
let mut header_value = Vec::with_capacity(20);
#[cfg(not(test))]
generate_message_id_header(&mut header_value, &ctx.runtime.local_hostname).unwrap();
#[cfg(test)]
header_value.extend_from_slice(b"<auto-generated@message-id>");
ctx.insert_header(
0,
HeaderName::Other("Message-ID".to_string().into()),
String::from_utf8(header_value).unwrap(),
true,
);
}
}
}
impl ExtractText {
pub(crate) fn exec(&self, ctx: &mut Context) {
let mut value = String::new();
if !ctx.part_iter_stack.is_empty() {
match ctx.message.parts.get(ctx.part).map(|p| &p.body) {
Some(PartType::Text(text)) => {
value = if let Some(first) = &self.first {
text.chars().take(*first).collect()
} else {
text.as_ref().to_string()
};
}
Some(PartType::Html(html)) => {
value = if let Some(first) = &self.first {
html_to_text(html.as_ref()).chars().take(*first).collect()
} else {
html_to_text(html.as_ref())
};
}
_ => (),
}
if !self.modifiers.is_empty() && !value.is_empty() {
for modifier in &self.modifiers {
value = modifier.apply(&value, ctx);
}
}
}
match &self.name {
VariableType::Local(var_id) => {
if let Some(var) = ctx.vars_local.get_mut(*var_id) {
*var = value.into();
} else {
debug_assert!(false, "Non-existent local variable {var_id}");
}
}
VariableType::Global(var_name) => {
ctx.vars_global
.insert(var_name.to_string().into(), value.into());
}
VariableType::Envelope(env) => {
ctx.queued_events = vec![Event::SetEnvelope {
envelope: *env,
value,
}]
.into_iter();
}
_ => (),
}
}
}
enum StackItem<'x> {
Message(&'x Message<'x>),
Boundary(&'x str),
None,
}
impl<'x> Context<'x> {
pub(crate) fn build_message_id(&mut self) -> Option<Event> {
if self.has_changes {
self.last_message_id += 1;
self.main_message_id = self.last_message_id;
self.has_changes = false;
let message = self.build_message();
Some(Event::CreatedMessage {
message_id: self.main_message_id,
message,
})
} else {
None
}
}
pub(crate) fn build_message(&mut self) -> Vec<u8> {
let mut current_message = &self.message;
let mut current_boundary = "";
let mut message = Vec::with_capacity(self.message_size);
let mut iter = [0].iter();
let mut iter_stack = Vec::new();
let mut last_offset = 0;
'outer: loop {
while let Some(part) = iter.next().and_then(|p| current_message.parts.get(*p)) {
if last_offset > 0 {
message.extend_from_slice(
&current_message.raw_message[last_offset..part.offset_header],
);
} else if !current_boundary.is_empty()
&& part.offset_end == 0
&& !matches!(iter_stack.last(), Some((StackItem::Message(_), _, _)))
{
message.extend_from_slice(b"\r\n--");
message.extend_from_slice(current_boundary.as_bytes());
message.extend_from_slice(b"\r\n");
}
let mut ct_pos = usize::MAX;
for (header_pos, header) in part.headers.iter().enumerate() {
if header.offset_end != 0 {
if header.offset_field != header.offset_start {
message.extend_from_slice(
&current_message.raw_message
[header.offset_field..header.offset_end],
);
} else {
// Renamed header
message.extend_from_slice(header.name.as_str().as_bytes());
message.extend_from_slice(b":");
message.extend_from_slice(
&current_message.raw_message
[header.offset_start..header.offset_end],
);
}
} else {
if header.name == HeaderName::Other("Content-Type".into()) {
ct_pos = header_pos;
}
message.extend_from_slice(header.name.as_str().as_bytes());
message.extend_from_slice(b": ");
message.extend_from_slice(header.value.as_text().unwrap_or("").as_bytes());
message.extend_from_slice(b"\r\n");
}
}
if part.offset_body != 0 || part.encoding != Encoding::None {
// Add CRLF unless this is a :mime replaced part
message.extend_from_slice(b"\r\n");
}
if part.offset_body != 0 {
// Original message part
if let PartType::Multipart(subparts) = &part.body {
// Multiparts contain offsets of the entire part, do not add.
iter_stack.push((
StackItem::None,
part,
std::mem::replace(&mut iter, subparts.iter()),
));
last_offset = part.offset_body;
continue 'outer;
} else {
message.extend_from_slice(
&current_message.raw_message[part.offset_body..part.offset_end],
)
}
} else {
match &part.body {
PartType::Message(nested_message) => {
// Enclosed message
iter_stack.push((
StackItem::Message(current_message),
part,
std::mem::replace(&mut iter, [0].iter()),
));
current_message = nested_message;
continue 'outer;
}
PartType::Multipart(subparts) => {
// Multipart enclosing nested message, obtain MIME boundary
let prev_boundary = std::mem::replace(
&mut current_boundary,
if ct_pos != usize::MAX {
part.headers[ct_pos]
.value
.as_text()
.and_then(|h| h.split_once("boundary=\""))
.and_then(|(_, h)| h.split_once('\"'))
.map(|(h, _)| h)
} else {
None
}
.unwrap_or("invalid-boundary"),
);
// Enclose multipart
iter_stack.push((
StackItem::Boundary(prev_boundary),
part,
std::mem::replace(&mut iter, subparts.iter()),
));
continue 'outer;
}
_ => {
// Replaced part
message.extend_from_slice(part.contents());
}
}
}
last_offset = part.offset_end;
}
if let Some((prev_item, prev_part, prev_iter)) = iter_stack.pop() {
match prev_item {
StackItem::Message(prev_message) => {
if last_offset > 0 {
if let Some(bytes) = current_message.raw_message.get(last_offset..) {
message.extend_from_slice(bytes);
}
last_offset = 0;
}
current_message = prev_message;
}
StackItem::Boundary(prev_boundary) => {
if !current_boundary.is_empty() {
message.extend_from_slice(b"\r\n--");
message.extend_from_slice(current_boundary.as_bytes());
message.extend_from_slice(b"--\r\n");
}
current_boundary = prev_boundary;
}
StackItem::None => {
message.extend_from_slice(
&current_message.raw_message[last_offset..prev_part.offset_end],
);
last_offset = prev_part.offset_end;
}
}
iter = prev_iter;
} else {
break;
}
}
if last_offset > 0 {
if let Some(bytes) = current_message.raw_message.get(last_offset..) {
message.extend_from_slice(bytes);
}
}
message
}
}
#[cfg(test)]
thread_local!(static COUNTER: std::cell::Cell<u64> = 0.into());
#[cfg(test)]
pub(crate) fn make_test_boundary() -> String {
format!("boundary_{}", COUNTER.with(|c| { c.replace(c.get() + 1) }))
}
#[cfg(test)]
pub(crate) fn reset_test_boundary() {
COUNTER.with(|c| c.replace(0));
}

@ -0,0 +1,595 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use mail_builder::headers::{date::Date, message_id::generate_message_id_header};
use mail_parser::{decoders::quoted_printable::HEX_MAP, HeaderName};
use crate::sieve::{
compiler::grammar::actions::{
action_notify::Notify,
action_redirect::{ByTime, Ret},
},
Context, Event, Importance, Recipient,
};
use super::action_vacation::MAX_SUBJECT_LEN;
impl Notify {
pub(crate) fn exec(&self, ctx: &mut Context) {
// Do not notify on Auto-Submitted messages
for header in &ctx.message.parts[0].headers {
if matches!(&header.name, HeaderName::Other(name) if name.eq_ignore_ascii_case("Auto-Submitted"))
&& header
.value
.as_text()
.map_or(true, |v| !v.eq_ignore_ascii_case("no"))
{
return;
}
}
let uri = ctx.eval_value(&self.method).into_string();
let (scheme, params) = if let Some(parts) = parse_uri(&uri) {
parts
} else {
return;
};
let has_fcc = self.fcc.is_some();
let is_mailto = scheme.eq_ignore_ascii_case("mailto")
&& ctx.num_out_messages < ctx.runtime.max_out_messages;
let mut events = Vec::with_capacity(3);
if is_mailto || has_fcc {
let params = if is_mailto {
if let Some(params) = parse_mailto(params) {
params
} else {
return;
}
} else {
MailtoMessage {
to: Vec::new(),
cc: Vec::new(),
bcc: Vec::new(),
body: None,
headers: Vec::new(),
}
};
let from = if let Some(from) = &self.from {
let from = ctx.eval_value(from).into_cow();
if from
.to_ascii_lowercase()
.contains(&ctx.user_address.to_ascii_lowercase())
{
from
} else {
ctx.user_from_field().into()
}
} else {
ctx.user_from_field().into()
};
let notify_message = self.message.as_ref().map(|m| ctx.eval_value(m).into_cow());
let message_len = params
.to
.iter()
.chain(params.cc.iter())
.map(|a| a.len() + 4)
.sum::<usize>()
+ params
.headers
.iter()
.map(|(h, v)| h.len() + v.len() + 4)
.sum::<usize>()
+ params.body.as_ref().map_or(0, |b| b.len())
+ notify_message.as_ref().map_or(0, |b| b.len())
+ from.len()
+ 200;
let mut message = Vec::with_capacity(message_len);
message.extend_from_slice(b"From: ");
message.extend_from_slice(from.as_bytes());
message.extend_from_slice(b"\r\n");
for (header, addresses) in [("To: ", &params.to), ("Cc: ", &params.cc)] {
if !addresses.is_empty() {
message.extend_from_slice(header.as_bytes());
for (pos, address) in addresses.iter().enumerate() {
if pos > 0 {
message.extend_from_slice(b", ");
}
if !address.contains('<') {
message.push(b'<');
}
message.extend_from_slice(address.as_bytes());
if !address.contains('<') {
message.push(b'>');
}
}
message.extend_from_slice(b"\r\n");
}
}
let mut has_subject = None;
let mut has_date = false;
let mut has_message_id = false;
for (header, value) in &params.headers {
match header {
HeaderName::Subject => {
has_subject = value.into();
continue;
}
HeaderName::Date => {
has_date = true;
}
HeaderName::MessageId => {
has_message_id = true;
}
HeaderName::From => {
continue;
}
_ => (),
}
message.extend_from_slice(header.as_str().as_bytes());
message.extend_from_slice(b": ");
message.extend_from_slice(value.as_bytes());
message.extend_from_slice(b"\r\n");
}
if !has_date {
message.extend_from_slice(b"Date: ");
message.extend_from_slice(Date::now().to_rfc822().as_bytes());
message.extend_from_slice(b"\r\n");
}
if !has_message_id {
message.extend_from_slice(b"Message-ID: ");
generate_message_id_header(&mut message, &ctx.runtime.local_hostname).unwrap();
message.extend_from_slice(b"\r\n");
}
let (importance, priority) =
self.importance
.as_ref()
.map_or(("Normal", "3 (Normal)"), |i| {
match ctx.eval_value(i).into_cow().as_ref() {
"1" => ("High", "1 (High)"),
"3" => ("Low", "5 (Low)"),
_ => ("Normal", "3 (Normal)"),
}
});
message.extend_from_slice(b"Importance: ");
message.extend_from_slice(importance.as_bytes());
message.extend_from_slice(b"\r\n");
message.extend_from_slice(b"X-Priority: ");
message.extend_from_slice(priority.as_bytes());
message.extend_from_slice(b"\r\n");
message.extend_from_slice(b"Subject: ");
let subject = if let Some(subject) = has_subject {
subject.as_str()
} else if let Some(subject) = &notify_message {
subject.as_ref()
} else if let Some(subject) = ctx.message.subject() {
subject
} else {
""
};
let mut iter = subject.chars().enumerate();
let mut buf = [0; 4];
#[allow(clippy::while_let_on_iterator)]
while let Some((pos, char)) = iter.next() {
if pos < MAX_SUBJECT_LEN {
message.extend_from_slice(char.encode_utf8(&mut buf).as_bytes());
} else {
break;
}
}
if iter.next().is_some() {
message.extend_from_slice('…'.encode_utf8(&mut buf).as_bytes());
}
message.extend_from_slice(b"\r\n");
message.extend_from_slice(b"Auto-Submitted: auto-notified\r\n");
message.extend_from_slice(b"X-Sieve: yes\r\n");
message.extend_from_slice(b"Content-type: text/plain; charset=utf-8\r\n\r\n");
if let Some(body) = params.body {
message.extend_from_slice(body.as_bytes());
} else if let Some(subject) = &notify_message {
message.extend_from_slice(subject.as_bytes());
} else if let Some(subject) = ctx.message.subject() {
message.extend_from_slice(subject.as_bytes());
}
ctx.last_message_id += 1;
events.push(Event::CreatedMessage {
message_id: ctx.last_message_id,
message,
});
if is_mailto {
events.push(Event::SendMessage {
recipient: Recipient::Group(
params
.to
.into_iter()
.chain(params.cc)
.chain(params.bcc)
.map(|addr| {
if let Some((addr, _)) = addr
.rsplit_once('<')
.and_then(|(_, addr)| addr.rsplit_once('>'))
{
addr.to_string()
} else {
addr
}
})
.collect(),
),
notify:
crate::sieve::compiler::grammar::actions::action_redirect::Notify::Never,
return_of_content: Ret::Default,
by_time: ByTime::None,
message_id: ctx.last_message_id,
});
}
}
if !is_mailto {
events.push(Event::Notify {
method: uri,
from: self.from.as_ref().map(|f| ctx.eval_value(f).into_string()),
importance: self.importance.as_ref().map_or(Importance::Normal, |i| {
match ctx.eval_value(i).into_cow().as_ref() {
"1" => Importance::High,
"3" => Importance::Low,
_ => Importance::Normal,
}
}),
options: ctx.eval_values_owned(&self.options),
message: self
.message
.as_ref()
.map(|m| ctx.eval_value(m).into_string())
.or_else(|| ctx.message.subject().map(|s| s.to_string()))
.unwrap_or_default(),
});
ctx.num_out_messages += 1;
}
if let Some(fcc) = &self.fcc {
// File carbon copy
events.push(Event::FileInto {
folder: ctx.eval_value(&fcc.mailbox).into_string(),
flags: ctx.get_local_flags(&fcc.flags),
mailbox_id: fcc
.mailbox_id
.as_ref()
.map(|m| ctx.eval_value(m).into_string()),
special_use: fcc
.special_use
.as_ref()
.map(|s| ctx.eval_value(s).into_string()),
create: fcc.create,
message_id: ctx.last_message_id,
});
}
ctx.queued_events = events.into_iter();
}
}
pub fn validate_from(addr: &str) -> bool {
let mut has_at = false;
let mut has_dot = false;
let mut in_quote = false;
let mut in_angle = false;
let mut last_ch = 0;
for &ch in addr.as_bytes().iter() {
match ch {
b'\"' => {
if last_ch != b'\\' {
in_quote = !in_quote;
}
}
b'<' if !in_quote => {
if !in_angle {
in_angle = true;
has_at = false;
has_dot = false;
} else {
return false;
}
}
b'>' if !in_quote => {
if in_angle {
in_angle = false;
} else {
return false;
}
}
b'@' if !in_quote => {
if !has_at && last_ch.is_ascii_alphanumeric() {
has_at = true;
} else {
return false;
}
}
b'.' if !in_quote && has_at => {
has_dot = true;
}
_ => (),
}
last_ch = ch;
}
has_dot && has_at && !in_angle
}
pub fn validate_uri(uri: &str) -> Option<&str> {
let (scheme, uri) = parse_uri(uri)?;
if scheme.eq_ignore_ascii_case("mailto") {
parse_mailto(uri)?;
scheme.into()
} else if ["xmpp", "tel", "http", "https"].contains(&scheme) {
scheme.into()
} else {
None
}
}
pub(crate) fn parse_uri(uri: &str) -> Option<(&str, &str)> {
let (scheme, uri) = uri.split_once(':')?;
if !uri.is_empty() {
Some((scheme, uri))
} else {
None
}
}
pub enum Mailto {
Header(HeaderName<'static>),
Body,
Other(String),
}
enum State {
Address((HeaderName<'static>, bool)),
ParamName,
ParamValue(Mailto),
}
#[derive(Default)]
struct MailtoMessage {
to: Vec<String>,
cc: Vec<String>,
bcc: Vec<String>,
body: Option<String>,
headers: Vec<(HeaderName<'static>, String)>,
}
fn parse_mailto(uri: &str) -> Option<MailtoMessage> {
let mut params = MailtoMessage::default();
let mut state = State::Address((HeaderName::To, false));
let mut buf = Vec::new();
let uri_ = uri.as_bytes();
let mut iter = uri_.iter();
let mut has_addresses = false;
while let Some(&ch) = iter.next() {
match ch {
b'%' => {
let hex1 = HEX_MAP[*iter.next()? as usize];
let hex2 = HEX_MAP[*iter.next()? as usize];
if hex1 != -1 && hex2 != -1 {
let ch = ((hex1 as u8) << 4) | hex2 as u8;
match &state {
State::Address((header, has_at)) => match ch {
b',' => {
if *has_at {
insert_address(
&mut params,
header.clone(),
String::from_utf8(std::mem::take(&mut buf)).ok()?,
);
has_addresses = true;
state = State::Address((header.clone(), false));
} else {
return None;
}
}
b'@' => {
if !*has_at {
state = State::Address((header.clone(), true));
buf.push(ch);
} else {
return None;
}
}
_ => {
buf.push(ch);
}
},
_ => buf.push(ch),
}
} else {
return None;
}
}
b',' => match &state {
State::Address((header, true)) => {
insert_address(
&mut params,
header.clone(),
String::from_utf8(std::mem::take(&mut buf)).ok()?,
);
state = State::Address((header.clone(), false));
has_addresses = true;
}
State::ParamValue(_) => buf.push(ch),
_ => return None,
},
b'?' => match &state {
State::Address((header, has_at)) if *has_at || buf.is_empty() => {
if !buf.is_empty() {
insert_address(
&mut params,
header.clone(),
String::from_utf8(std::mem::take(&mut buf)).ok()?,
);
has_addresses = true;
}
state = State::ParamName;
}
State::ParamValue(_) => buf.push(ch),
_ => return None,
},
b'@' => match &state {
State::Address((header, false)) if !buf.is_empty() => {
buf.push(ch);
state = State::Address((header.clone(), true));
}
State::ParamName | State::ParamValue(_) => buf.push(ch),
_ => return None,
},
b'=' => match &state {
State::ParamName if !buf.is_empty() => {
let param = String::from_utf8(std::mem::take(&mut buf)).ok()?;
state = HeaderName::parse(param)
.map(|hdr| match hdr {
HeaderName::To | HeaderName::Cc | HeaderName::Bcc => {
State::Address((hdr, false))
}
HeaderName::Other(param) => {
if param.eq_ignore_ascii_case("body") {
State::ParamValue(Mailto::Body)
} else {
State::ParamValue(Mailto::Other(param.into_owned()))
}
}
_ => State::ParamValue(Mailto::Header(hdr)),
})
.unwrap_or_else(|| State::ParamValue(Mailto::Other(String::new())));
}
State::ParamValue(_) => buf.push(ch),
_ => return None,
},
b'&' => match state {
State::Address((header, true)) => {
if !buf.is_empty() {
insert_address(
&mut params,
header,
String::from_utf8(std::mem::take(&mut buf)).ok()?,
);
}
state = State::ParamName;
}
State::ParamValue(param) => {
if !buf.is_empty() {
let value = String::from_utf8(std::mem::take(&mut buf)).ok()?;
match param {
Mailto::Header(header) => params.headers.push((header, value)),
Mailto::Body => params.body = value.into(),
Mailto::Other(header) => params.headers.push((header.into(), value)),
}
}
state = State::ParamName;
}
_ => return None,
},
_ => match &state {
State::ParamName => {
if ch.is_ascii_alphanumeric() || [b'-', b'_'].contains(&ch) {
buf.push(ch);
} else {
return None;
}
}
_ => {
if !ch.is_ascii_whitespace() {
buf.push(ch);
}
}
},
}
}
if !buf.is_empty() {
let value = String::from_utf8(std::mem::take(&mut buf)).ok()?;
match state {
State::Address((header, true)) => {
insert_address(&mut params, header, value);
has_addresses = true;
}
State::ParamName => {
params
.headers
.push((HeaderName::Other(value.into()), String::new()));
}
State::ParamValue(param) => match param {
Mailto::Header(header) => params.headers.push((header, value)),
Mailto::Body => params.body = value.into(),
Mailto::Other(header) => params
.headers
.push((HeaderName::Other(header.into()), value)),
},
_ => return None,
}
}
if has_addresses {
Some(params)
} else {
None
}
}
#[inline(always)]
fn insert_address(params: &mut MailtoMessage, name: HeaderName, value: String) {
if !params
.to
.iter()
.chain(params.cc.iter())
.chain(params.bcc.iter())
.any(|v| v.eq_ignore_ascii_case(&value))
{
match name {
HeaderName::To => {
params.to.push(value);
}
HeaderName::Cc => {
params.cc.push(value);
}
HeaderName::Bcc => {
params.bcc.push(value);
}
_ => (),
}
}
}

@ -0,0 +1,159 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use mail_parser::{DateTime, HeaderName};
use crate::sieve::{
compiler::grammar::actions::action_redirect::{ByTime, Redirect},
Context, Envelope, Event, Recipient,
};
impl Redirect {
pub(crate) fn exec(&self, ctx: &mut Context) {
if let Some(address) = sanitize_address(ctx.eval_value(&self.address).into_cow().as_ref()) {
if ctx.num_redirects < ctx.runtime.max_redirects
&& ctx.num_out_messages < ctx.runtime.max_out_messages
&& ctx.message.parts[0]
.headers
.iter()
.filter(|h| matches!(&h.name, HeaderName::Received))
.count()
< ctx.runtime.max_received_headers
{
// Try to avoid forwarding loops
if !self.list
&& (address.eq_ignore_ascii_case(ctx.user_address.as_ref())
|| ctx.envelope.iter().any(|(e, v)| {
matches!(e, Envelope::From)
&& v.to_cow().eq_ignore_ascii_case(address.as_str())
}))
{
return;
}
if !self.copy && matches!(&ctx.final_event, Some(Event::Keep { .. })) {
ctx.final_event = None;
}
let mut events = Vec::with_capacity(2);
if let Some(event) = ctx.build_message_id() {
events.push(event);
}
ctx.num_redirects += 1;
ctx.num_out_messages += 1;
events.push(Event::SendMessage {
recipient: if !self.list {
Recipient::Address(address)
} else {
Recipient::List(address)
},
notify: self.notify.clone(),
return_of_content: self.return_of_content.clone(),
by_time: match &self.by_time {
ByTime::Relative {
rlimit,
mode,
trace,
} => ByTime::Relative {
rlimit: *rlimit,
mode: mode.clone(),
trace: *trace,
},
ByTime::Absolute {
alimit,
mode,
trace,
} => ByTime::Absolute {
alimit: DateTime::parse_rfc3339(
ctx.eval_value(alimit).into_cow().as_ref(),
)
.and_then(|d| {
if d.is_valid() {
d.to_timestamp().into()
} else {
None
}
})
.unwrap_or(0),
mode: mode.clone(),
trace: *trace,
},
ByTime::None => ByTime::None,
},
message_id: ctx.main_message_id,
});
ctx.queued_events = events.into_iter();
}
}
}
}
pub(crate) fn sanitize_address(addr: &str) -> Option<String> {
let mut result = String::with_capacity(addr.len());
let mut in_quote = false;
let mut last_ch = '\n';
let mut has_at = false;
let mut has_dot = false;
for ch in addr.chars() {
match ch {
'\"' => {
if !in_quote {
in_quote = true;
} else if last_ch != '\\' {
in_quote = false;
}
}
'@' if !in_quote => {
if !has_at && !result.is_empty() {
has_at = true;
result.push(ch);
} else {
return None;
}
}
'.' if !in_quote && has_at && !has_dot => {
has_dot = true;
result.push(ch);
}
'<' => {
result.clear();
has_at = false;
has_dot = false;
}
'>' => (),
_ => {
if !ch.is_ascii_whitespace() || in_quote {
result.push(ch);
}
}
}
last_ch = ch;
}
if !result.is_empty() && has_at && has_dot {
Some(result)
} else {
None
}
}

@ -0,0 +1,211 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::{
compiler::{
grammar::actions::action_set::{Modifier, Set},
VariableType,
},
runtime::Variable,
Context, Event,
};
use std::fmt::Write;
impl Set {
pub(crate) fn exec(&self, ctx: &mut Context) {
let mut value = ctx.eval_value(&self.value).into_owned();
for modifier in &self.modifiers {
value = modifier.apply(value.into_cow().as_ref(), ctx).into();
}
ctx.set_variable(&self.name, value);
}
}
impl<'x> Context<'x> {
pub(crate) fn set_variable(&mut self, var_name: &VariableType, mut variable: Variable<'x>) {
if variable.len() > self.runtime.max_variable_size {
let mut new_variable = String::with_capacity(self.runtime.max_variable_size);
for ch in variable.into_cow().chars() {
if ch.len_utf8() + new_variable.len() <= self.runtime.max_variable_size {
new_variable.push(ch);
} else {
break;
}
}
variable = new_variable.into();
}
match var_name {
VariableType::Local(var_id) => {
if let Some(var) = self.vars_local.get_mut(*var_id) {
*var = variable.into_owned();
} else {
debug_assert!(false, "Non-existent local variable {var_id}");
}
}
VariableType::Global(var_name) => {
self.vars_global
.insert(var_name.to_string().into(), variable.into_owned());
}
VariableType::Envelope(env) => {
self.queued_events = vec![Event::SetEnvelope {
envelope: *env,
value: variable.into_string(),
}]
.into_iter();
}
_ => (),
}
}
pub(crate) fn get_variable(&self, var_name: &VariableType) -> Option<&Variable<'x>> {
match var_name {
VariableType::Local(var_id) => self.vars_local.get(*var_id),
VariableType::Global(var_name) => self.vars_global.get(var_name.as_str()),
VariableType::Envelope(env) => {
self.envelope.iter().find_map(
|(name, val)| {
if name == env {
Some(val)
} else {
None
}
},
)
}
_ => unreachable!(),
}
}
}
impl Modifier {
pub(crate) fn apply(&self, input: &str, ctx: &Context) -> String {
let max_len = ctx.runtime.max_variable_size;
match self {
Modifier::Lower => input.to_lowercase(),
Modifier::Upper => input.to_uppercase(),
Modifier::LowerFirst => {
let mut result = String::with_capacity(input.len());
for (pos, char) in input.chars().enumerate() {
if result.len() + char.len_utf8() <= max_len {
if pos != 0 {
result.push(char);
} else {
for char in char.to_lowercase() {
result.push(char);
}
}
} else {
return result;
}
}
result
}
Modifier::UpperFirst => {
let mut result = String::with_capacity(input.len());
for (pos, char) in input.chars().enumerate() {
if result.len() + char.len_utf8() <= max_len {
if pos != 0 {
result.push(char);
} else {
for char in char.to_uppercase() {
result.push(char);
}
}
} else {
return result;
}
}
result
}
Modifier::QuoteWildcard => {
let mut result = String::with_capacity(input.len());
for char in input.chars() {
if ['*', '\\', '?'].contains(&char) {
if result.len() + char.len_utf8() < max_len {
result.push('\\');
result.push(char);
} else {
return result;
}
} else if result.len() + char.len_utf8() <= max_len {
result.push(char);
} else {
return result;
}
}
result
}
Modifier::QuoteRegex => {
let mut result = String::with_capacity(input.len());
for char in input.chars() {
if [
'*', '\\', '?', '.', '[', ']', '(', ')', '+', '{', '}', '|', '^', '=', ':',
'$',
]
.contains(&char)
{
if result.len() + char.len_utf8() < max_len {
result.push('\\');
result.push(char);
} else {
return result;
}
} else if result.len() + char.len_utf8() <= max_len {
result.push(char);
} else {
return result;
}
}
result
}
Modifier::Length => input.chars().count().to_string(),
Modifier::EncodeUrl => {
let mut buf = [0; 4];
let mut result = String::with_capacity(input.len());
for char in input.chars() {
if char.is_ascii_alphanumeric() || ['-', '.', '_', '~'].contains(&char) {
if result.len() < max_len {
result.push(char);
} else {
return result;
}
} else if result.len() + (char.len_utf8() * 3) <= max_len {
for byte in char.encode_utf8(&mut buf).as_bytes().iter() {
write!(result, "%{byte:02x}").ok();
}
} else {
return result;
}
}
result
}
Modifier::Replace { find, replace } => input.replace(
ctx.eval_value(find).into_cow().as_ref(),
ctx.eval_value(replace).into_cow().as_ref(),
),
}
}
}

@ -0,0 +1,360 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::borrow::Cow;
use mail_builder::headers::{date::Date, message_id::generate_message_id_header};
use mail_parser::{HeaderName, HeaderValue};
use crate::sieve::{
compiler::grammar::{
actions::{
action_redirect::{ByTime, Notify, Ret},
action_vacation::{Period, TestVacation, Vacation},
},
AddressPart,
},
runtime::tests::TestResult,
Context, Envelope, Event, Recipient,
};
pub(crate) const MAX_SUBJECT_LEN: usize = 256;
impl TestVacation {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let mut from = String::new();
let mut user_addresses = Vec::new();
if ctx.num_out_messages >= ctx.runtime.max_out_messages {
return TestResult::Bool(false);
}
for (name, value) in &ctx.envelope {
if !value.is_empty() {
match name {
Envelope::From => {
from = value.to_cow().to_ascii_lowercase();
}
Envelope::To => {
if !ctx.runtime.vacation_use_orig_rcpt {
user_addresses.push(value.to_cow());
}
}
Envelope::Orcpt => {
if ctx.runtime.vacation_use_orig_rcpt {
user_addresses.push(value.to_cow());
}
}
_ => (),
}
}
}
// Add user specified addresses
for address in &self.addresses {
let address = ctx.eval_value(address).into_cow();
if !address.is_empty() {
user_addresses.push(address);
}
}
if !ctx.user_address.is_empty() {
user_addresses.push(ctx.user_address.as_ref().into());
}
// Do not reply to own address
if from.is_empty()
|| user_addresses.is_empty()
|| from.starts_with("mailer-daemon")
|| from.starts_with("owner-")
|| from.contains("-request@")
|| user_addresses.iter().any(|a| a.eq_ignore_ascii_case(&from))
{
return TestResult::Bool(false);
}
// Check headers
let mut found_rcpt = false;
let mut received_count = 0;
for header in &ctx.message.parts[0].headers {
match &header.name {
HeaderName::To
| HeaderName::Cc
| HeaderName::Bcc
| HeaderName::ResentTo
| HeaderName::ResentBcc
| HeaderName::ResentCc
if !found_rcpt =>
{
found_rcpt = ctx.find_addresses(header, &AddressPart::All, |addr| {
user_addresses.iter().any(|a| a.eq_ignore_ascii_case(addr))
});
}
HeaderName::ListArchive
| HeaderName::ListHelp
| HeaderName::ListId
| HeaderName::ListOwner
| HeaderName::ListPost
| HeaderName::ListSubscribe
| HeaderName::ListUnsubscribe => {
// Do not send vacation responses to lists
return TestResult::Bool(false);
}
HeaderName::Received => {
received_count += 1;
}
HeaderName::Other(header_name) => {
if header_name.eq_ignore_ascii_case("Auto-Submitted") {
if header
.value
.as_text()
.map_or(true, |v| !v.eq_ignore_ascii_case("no"))
{
return TestResult::Bool(false);
}
} else if header_name.eq_ignore_ascii_case("X-Auto-Response-Suppress") {
if header.value.as_text().map_or(false, |v| {
v.to_ascii_lowercase()
.split(',')
.any(|v| ["all", "oof"].contains(&v.trim()))
}) {
return TestResult::Bool(false);
}
} else if header_name.eq_ignore_ascii_case("Precedence")
&& header
.value
.as_text()
.map_or(false, |v| v.eq_ignore_ascii_case("bulk"))
{
return TestResult::Bool(false);
}
}
_ => (),
}
}
// No user address found in header or possible loop
if found_rcpt && received_count <= ctx.runtime.max_received_headers {
TestResult::Event {
event: Event::DuplicateId {
id: if let Some(handle) = &self.handle {
format!("_v{}{}", from, ctx.eval_value(handle).into_cow())
} else {
format!("_v{}{}", from, ctx.eval_value(&self.reason).into_cow())
},
expiry: match &self.period {
Period::Days(days) => days * 86400,
Period::Seconds(seconds) => *seconds,
Period::Default => ctx.runtime.default_vacation_expiry,
},
last: false,
},
is_not: true,
}
} else {
TestResult::Bool(false)
}
}
}
impl Vacation {
pub(crate) fn exec(&self, ctx: &mut Context) {
let mut vacation_to = Cow::from("");
for (name, value) in &ctx.envelope {
if !value.is_empty() && name == &Envelope::From {
vacation_to = value.to_cow();
break;
}
}
// Check headers
let mut vacation_subject = if let Some(subject) = &self.subject {
ctx.eval_value(subject)
} else {
"".into()
};
// Check headers
let mut message_id = None;
let mut vacation_to_full = None;
let mut references = None;
for header in &ctx.message.parts[0].headers {
match &header.name {
HeaderName::Subject if vacation_subject.is_empty() => {
if let Some(subject) = header.value.as_text() {
let mut vacation_subject_ = String::with_capacity(MAX_SUBJECT_LEN);
let mut iter = ctx
.runtime
.vacation_subject_prefix
.chars()
.chain(subject.chars())
.enumerate();
#[allow(clippy::while_let_on_iterator)]
while let Some((pos, char)) = iter.next() {
if pos < MAX_SUBJECT_LEN {
vacation_subject_.push(char);
} else {
break;
}
}
if iter.next().is_some() {
vacation_subject_.push('…');
}
vacation_subject = vacation_subject_.into();
}
}
HeaderName::MessageId => {
message_id = header.value.as_text();
}
HeaderName::References => {
if header.offset_start > 0 {
references = (&ctx.message.raw_message
[header.offset_start..header.offset_end])
.into();
}
}
HeaderName::From | HeaderName::Sender => {
if matches!(&header.value, HeaderValue::Address(address) if address.contains(vacation_to.as_ref()))
&& header.offset_start > 0
{
vacation_to_full = (&ctx.message.raw_message
[header.offset_start..header.offset_end])
.into();
}
}
_ => (),
}
}
// Build message
let vacation_from = if let Some(from) = &self.from {
ctx.eval_value(from)
} else if !ctx.user_address.is_empty() {
ctx.user_from_field().into()
} else if let Some(addr) =
ctx.envelope
.iter()
.find_map(|(n, v)| if n == &Envelope::To { Some(v) } else { None })
{
addr.to_cow().into()
} else {
"".into()
};
if vacation_subject.is_empty() {
vacation_subject = ctx.runtime.vacation_default_subject.as_ref().into();
}
let vacation_body = ctx.eval_value(&self.reason);
let message_len = vacation_body.len()
+ vacation_from.len()
+ vacation_to_full
.as_ref()
.map_or(vacation_to.len(), |t| t.len())
+ vacation_subject.len()
+ message_id.as_ref().map_or(0, |m| m.len() * 2)
+ references.as_ref().map_or(0, |m| m.len())
+ 160;
let mut message = Vec::with_capacity(message_len);
write_header(&mut message, "From: ", vacation_from.into_cow().as_ref());
if let Some(vacation_to_full) = vacation_to_full {
message.extend_from_slice(b"To:");
message.extend_from_slice(vacation_to_full);
} else {
write_header(&mut message, "To: ", vacation_to.to_string().as_ref());
}
write_header(
&mut message,
"Subject: ",
vacation_subject.into_cow().as_ref(),
);
if let Some(message_id) = message_id {
message.extend_from_slice(b"In-Reply-To: <");
message.extend_from_slice(message_id.as_bytes());
message.extend_from_slice(b">\r\n");
message.extend_from_slice(b"References: <");
message.extend_from_slice(message_id.as_bytes());
if let Some(references) = references {
message.extend_from_slice(b"> ");
message.extend_from_slice(references);
} else {
message.extend_from_slice(b">\r\n");
}
}
message.extend_from_slice(b"Date: ");
message.extend_from_slice(Date::now().to_rfc822().as_bytes());
message.extend_from_slice(b"\r\n");
message.extend_from_slice(b"Message-ID: ");
generate_message_id_header(&mut message, &ctx.runtime.local_hostname).unwrap();
message.extend_from_slice(b"\r\n");
write_header(&mut message, "Auto-Submitted: ", "auto-replied");
if !self.mime {
message.extend_from_slice(b"Content-type: text/plain; charset=utf-8\r\n\r\n");
}
message.extend_from_slice(vacation_body.into_cow().as_bytes());
// Add action
let mut events = Vec::with_capacity(3);
ctx.last_message_id += 1;
ctx.num_out_messages += 1;
events.push(Event::CreatedMessage {
message_id: ctx.last_message_id,
message,
});
events.push(Event::SendMessage {
recipient: Recipient::Address(vacation_to.to_string()),
notify: Notify::Never,
return_of_content: Ret::Default,
by_time: ByTime::None,
message_id: ctx.last_message_id,
});
// File carbon copy
if let Some(fcc) = &self.fcc {
events.push(Event::FileInto {
folder: ctx.eval_value(&fcc.mailbox).into_string(),
flags: ctx.get_local_flags(&fcc.flags),
mailbox_id: fcc
.mailbox_id
.as_ref()
.map(|m| ctx.eval_value(m).into_string()),
special_use: fcc
.special_use
.as_ref()
.map(|s| ctx.eval_value(s).into_string()),
create: fcc.create,
message_id: ctx.last_message_id,
});
}
ctx.queued_events = events.into_iter();
}
}
fn write_header(buf: &mut Vec<u8>, name: &str, value: &str) {
buf.extend_from_slice(name.as_bytes());
buf.extend_from_slice(value.as_bytes());
buf.extend_from_slice(b"\r\n");
}

@ -0,0 +1,33 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
pub mod action_convert;
pub mod action_editheader;
pub mod action_fileinto;
pub mod action_flags;
pub mod action_include;
pub mod action_mime;
pub mod action_notify;
pub mod action_redirect;
pub mod action_set;
pub mod action_vacation;

@ -0,0 +1,682 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::convert::TryInto;
use std::{borrow::Cow, sync::Arc, time::SystemTime};
use ahash::AHashMap;
use mail_parser::Message;
use crate::sieve::{
compiler::grammar::{instruction::Instruction, Capability},
Context, Envelope, Event, Input, Metadata, Runtime, Sieve, SpamStatus, VirusStatus,
MAX_LOCAL_VARIABLES, MAX_MATCH_VARIABLES,
};
use super::{
actions::action_include::IncludeResult,
tests::{test_envelope::parse_envelope_address, TestResult},
RuntimeError, Variable,
};
#[derive(Clone, Debug)]
pub(crate) struct ScriptStack {
pub(crate) script: Arc<Sieve>,
pub(crate) prev_pos: usize,
pub(crate) prev_vars_local: Vec<Variable<'static>>,
pub(crate) prev_vars_match: Vec<Variable<'static>>,
}
impl<'x> Context<'x> {
pub(crate) fn new(runtime: &'x Runtime, message: Message<'x>) -> Self {
Context {
#[cfg(test)]
runtime: runtime.clone(),
#[cfg(not(test))]
runtime,
message,
part: 0,
part_iter: Vec::new().into_iter(),
part_iter_stack: Vec::new(),
line_iter: Vec::new().into_iter().enumerate(),
pos: usize::MAX,
test_result: false,
script_cache: AHashMap::new(),
script_stack: Vec::with_capacity(0),
vars_global: AHashMap::new(),
vars_env: AHashMap::new(),
vars_local: Vec::with_capacity(0),
vars_match: Vec::with_capacity(0),
envelope: Vec::new(),
metadata: Vec::new(),
message_size: usize::MAX,
final_event: Event::Keep {
flags: Vec::with_capacity(0),
message_id: 0,
}
.into(),
queued_events: vec![].into_iter(),
has_changes: false,
user_address: "".into(),
user_full_name: "".into(),
current_time: SystemTime::now()
.duration_since(SystemTime::UNIX_EPOCH)
.map(|d| d.as_secs())
.unwrap_or(0) as i64,
num_redirects: 0,
num_instructions: 0,
num_out_messages: 0,
last_message_id: 0,
main_message_id: 0,
virus_status: VirusStatus::Unknown,
spam_status: SpamStatus::Unknown,
}
}
#[allow(clippy::while_let_on_iterator)]
pub fn run(&mut self, input: Input) -> Option<Result<Event, RuntimeError>> {
match input {
Input::True => self.test_result ^= true,
Input::False => self.test_result ^= false,
Input::Script { name, script } => {
let num_vars = script.num_vars;
let num_match_vars = script.num_match_vars;
if num_match_vars <= MAX_MATCH_VARIABLES && num_vars <= MAX_LOCAL_VARIABLES {
if self.message_size == usize::MAX {
self.message_size = self.message.raw_message.len();
}
self.script_cache.insert(name, script.clone());
self.script_stack.push(ScriptStack {
script,
prev_pos: self.pos,
prev_vars_local: std::mem::replace(
&mut self.vars_local,
vec![Variable::default(); num_vars],
),
prev_vars_match: std::mem::replace(
&mut self.vars_match,
vec![Variable::default(); num_match_vars],
),
});
self.pos = 0;
self.test_result = false;
}
}
Input::Variables { list } => {
for item in list {
self.set_variable(&item.name, item.value);
}
self.test_result ^= true;
}
}
// Return any queued events
if let Some(event) = self.queued_events.next() {
return Some(Ok(event));
}
let mut current_script = self.script_stack.last()?.script.clone();
let mut iter = current_script.instructions.get(self.pos..)?.iter();
'outer: loop {
while let Some(instruction) = iter.next() {
self.num_instructions += 1;
if self.num_instructions > self.runtime.cpu_limit {
self.finish_loop();
return Some(Err(RuntimeError::CPULimitReached));
}
self.pos += 1;
match instruction {
Instruction::Jz(jmp_pos) => {
if !self.test_result {
debug_assert!(*jmp_pos > self.pos - 1);
self.pos = *jmp_pos;
iter = current_script.instructions.get(self.pos..)?.iter();
continue;
}
}
Instruction::Jnz(jmp_pos) => {
if self.test_result {
debug_assert!(*jmp_pos > self.pos - 1);
self.pos = *jmp_pos;
iter = current_script.instructions.get(self.pos..)?.iter();
continue;
}
}
Instruction::Jmp(jmp_pos) => {
debug_assert_ne!(*jmp_pos, self.pos - 1);
self.pos = *jmp_pos;
iter = current_script.instructions.get(self.pos..)?.iter();
continue;
}
Instruction::Test(test) => match test.exec(self) {
TestResult::Bool(result) => {
self.test_result = result;
}
TestResult::Event { event, is_not } => {
self.test_result = is_not;
return Some(Ok(event));
}
TestResult::Error(err) => {
self.finish_loop();
return Some(Err(err));
}
},
Instruction::Clear(clear) => {
if clear.local_vars_num > 0 {
if let Some(local_vars) = self.vars_local.get_mut(
clear.local_vars_idx as usize
..(clear.local_vars_idx + clear.local_vars_num) as usize,
) {
for local_var in local_vars.iter_mut() {
if !local_var.is_empty() {
*local_var = Variable::default();
}
}
} else {
debug_assert!(false, "Failed to clear local variables: {clear:?}");
}
}
if clear.match_vars != 0 {
self.clear_match_variables(clear.match_vars);
}
}
Instruction::Keep(keep) => {
let next_event = self.build_message_id();
self.final_event = Event::Keep {
flags: self.get_local_or_global_flags(&keep.flags),
message_id: self.main_message_id,
}
.into();
if let Some(next_event) = next_event {
return Some(Ok(next_event));
}
}
Instruction::FileInto(fi) => {
fi.exec(self);
if let Some(event) = self.queued_events.next() {
return Some(Ok(event));
}
}
Instruction::Redirect(redirect) => {
redirect.exec(self);
if let Some(event) = self.queued_events.next() {
return Some(Ok(event));
}
}
Instruction::Discard => {
self.final_event = Event::Discard.into();
}
Instruction::Stop => {
self.script_stack.clear();
break 'outer;
}
Instruction::Reject(reject) => {
self.final_event = None;
return Some(Ok(Event::Reject {
extended: reject.ereject,
reason: self.eval_value(&reject.reason).into_string(),
}));
}
Instruction::ForEveryPart(fep) => {
if let Some(next_part) = self.part_iter.next() {
self.part = next_part;
} else if let Some((prev_part, prev_part_iter)) = self.part_iter_stack.pop()
{
debug_assert!(fep.jz_pos > self.pos - 1);
self.part_iter = prev_part_iter;
self.part = prev_part;
self.pos = fep.jz_pos;
iter = current_script.instructions.get(self.pos..)?.iter();
continue;
} else {
self.part = 0;
#[cfg(test)]
panic!("ForEveryPart executed without items on stack.");
}
}
Instruction::ForEveryPartPush => {
let part_iter = self
.find_nested_parts_ids(self.part_iter_stack.is_empty())
.into_iter();
self.part_iter_stack
.push((self.part, std::mem::replace(&mut self.part_iter, part_iter)));
}
Instruction::ForEveryPartPop(num_pops) => {
debug_assert!(
*num_pops > 0 && *num_pops <= self.part_iter_stack.len(),
"Pop out of range: {} with {} items.",
num_pops,
self.part_iter_stack.len()
);
for _ in 0..*num_pops {
if let Some((prev_part, prev_part_iter)) = self.part_iter_stack.pop() {
self.part_iter = prev_part_iter;
self.part = prev_part;
} else {
break;
}
}
}
Instruction::ForEveryLineInit(source) => {
self.line_iter = match self.eval_value(source) {
Variable::Array(arr) if !arr.is_empty() => arr
.into_iter()
.map(|v| v.into_owned())
.collect::<Vec<_>>()
.into_iter()
.enumerate(),
Variable::ArrayRef(arr) if !arr.is_empty() => arr
.iter()
.map(|v| v.to_owned())
.collect::<Vec<_>>()
.into_iter()
.enumerate(),
Variable::String(s) => s
.lines()
.map(|line| Variable::String(line.to_string()))
.collect::<Vec<_>>()
.into_iter()
.enumerate(),
Variable::StringRef(s) => s
.lines()
.map(|line| Variable::String(line.to_string()))
.collect::<Vec<_>>()
.into_iter()
.enumerate(),
Variable::Integer(n) => {
vec![Variable::Integer(n)].into_iter().enumerate()
}
Variable::Float(n) => vec![Variable::Float(n)].into_iter().enumerate(),
_ => Vec::new().into_iter().enumerate(),
};
}
Instruction::ForEveryLine(fep) => {
if let Some((line_num, line)) = self.line_iter.next() {
if let Some(var) = self.vars_local.get_mut(fep.var_idx) {
*var = line;
} else {
debug_assert!(false, "Non-existent local variable {}", fep.var_idx);
}
if let Some(var) = self.vars_local.get_mut(fep.var_idx + 1) {
*var = Variable::Integer((line_num + 1) as i64);
} else {
debug_assert!(
false,
"Non-existent local variable {}",
fep.var_idx + 1
);
}
} else {
debug_assert!(fep.jz_pos > self.pos - 1);
self.pos = fep.jz_pos;
iter = current_script.instructions.get(self.pos..)?.iter();
continue;
}
}
Instruction::Replace(replace) => replace.exec(self),
Instruction::Enclose(enclose) => enclose.exec(self),
Instruction::ExtractText(extract) => {
extract.exec(self);
if let Some(event) = self.queued_events.next() {
return Some(Ok(event));
}
}
Instruction::AddHeader(add_header) => add_header.exec(self),
Instruction::DeleteHeader(delete_header) => delete_header.exec(self),
Instruction::Set(set) => {
set.exec(self);
if let Some(event) = self.queued_events.next() {
return Some(Ok(event));
}
}
Instruction::Notify(notify) => {
notify.exec(self);
if let Some(event) = self.queued_events.next() {
return Some(Ok(event));
}
}
Instruction::Vacation(vacation) => {
vacation.exec(self);
if let Some(event) = self.queued_events.next() {
return Some(Ok(event));
}
}
Instruction::EditFlags(flags) => flags.exec(self),
Instruction::Include(include) => match include.exec(self) {
IncludeResult::Cached(script) => {
self.script_stack.push(ScriptStack {
script: script.clone(),
prev_pos: self.pos,
prev_vars_local: std::mem::replace(
&mut self.vars_local,
vec![Variable::default(); script.num_vars],
),
prev_vars_match: std::mem::replace(
&mut self.vars_match,
vec![Variable::default(); script.num_match_vars],
),
});
self.pos = 0;
current_script = script;
iter = current_script.instructions.iter();
continue;
}
IncludeResult::Event(event) => {
return Some(Ok(event));
}
IncludeResult::Error(err) => {
self.finish_loop();
return Some(Err(err));
}
IncludeResult::None => (),
},
Instruction::Convert(convert) => {
convert.exec(self);
}
Instruction::Return => {
break;
}
Instruction::Require(capabilities) => {
for capability in capabilities {
if !self.runtime.allowed_capabilities.contains(capability) {
self.finish_loop();
return Some(Err(
if let Capability::Other(not_supported) = capability {
RuntimeError::CapabilityNotSupported(not_supported.clone())
} else {
RuntimeError::CapabilityNotAllowed(capability.clone())
},
));
}
}
}
Instruction::Error(err) => {
self.finish_loop();
return Some(Err(RuntimeError::ScriptErrorMessage(
self.eval_value(&err.message).into_string(),
)));
}
Instruction::Plugin(plugin) => {
return Some(Ok(self.eval_plugin_arguments(plugin)));
}
Instruction::Invalid(invalid) => {
self.finish_loop();
return Some(Err(RuntimeError::InvalidInstruction(invalid.clone())));
}
}
}
if let Some(prev_script) = self.script_stack.pop() {
self.pos = prev_script.prev_pos;
self.vars_local = prev_script.prev_vars_local;
self.vars_match = prev_script.prev_vars_match;
}
if let Some(script_stack) = self.script_stack.last() {
current_script = script_stack.script.clone();
iter = current_script.instructions.get(self.pos..)?.iter();
} else {
break;
}
}
match self.final_event.take() {
Some(Event::Keep {
mut flags,
message_id,
}) => {
let create_event = if self.has_changes {
self.build_message_id()
} else {
None
};
let global_flags = self.get_global_flags();
if flags.is_empty() && !global_flags.is_empty() {
flags = global_flags;
}
if let Some(create_event) = create_event {
self.queued_events = vec![
create_event,
Event::Keep {
flags,
message_id: self.main_message_id,
},
]
.into_iter();
self.queued_events.next().map(Ok)
} else {
Some(Ok(Event::Keep { flags, message_id }))
}
}
Some(event) => Some(Ok(event)),
_ => None,
}
}
pub(crate) fn finish_loop(&mut self) {
self.script_stack.clear();
if let Some(event) = self.final_event.take() {
self.queued_events = if let Event::Keep {
mut flags,
message_id,
} = event
{
let global_flags = self.get_global_flags();
if flags.is_empty() && !global_flags.is_empty() {
flags = global_flags;
}
if self.has_changes {
if let Some(event) = self.build_message_id() {
vec![
event,
Event::Keep {
flags,
message_id: self.main_message_id,
},
]
} else {
vec![Event::Keep { flags, message_id }]
}
} else {
vec![Event::Keep { flags, message_id }]
}
} else {
vec![event]
}
.into_iter();
}
}
pub fn set_envelope(
&mut self,
envelope: impl TryInto<Envelope>,
value: impl Into<Cow<'x, str>>,
) {
if let Ok(envelope) = envelope.try_into() {
if matches!(&envelope, Envelope::From | Envelope::To) {
let value: Cow<str> = value.into();
if let Some(value) = parse_envelope_address(value.as_ref()) {
self.envelope.push((envelope, value.to_string().into()));
}
} else {
self.envelope.push((envelope, Variable::from(value.into())));
}
}
}
pub fn with_vars_env(mut self, vars_env: AHashMap<Cow<'static, str>, Variable<'x>>) -> Self {
self.vars_env = vars_env;
self
}
pub fn with_envelope_list(mut self, envelope: Vec<(Envelope, Variable<'x>)>) -> Self {
self.envelope = envelope;
self
}
pub fn with_envelope(
mut self,
envelope: impl TryInto<Envelope>,
value: impl Into<Cow<'x, str>>,
) -> Self {
self.set_envelope(envelope, value);
self
}
pub fn clear_envelope(&mut self) {
self.envelope.clear()
}
pub fn set_user_address(&mut self, from: impl Into<Cow<'x, str>>) {
self.user_address = from.into();
}
pub fn with_user_address(mut self, from: impl Into<Cow<'x, str>>) -> Self {
self.set_user_address(from);
self
}
pub fn set_user_full_name(&mut self, name: &str) {
let mut name_ = String::with_capacity(name.len());
for ch in name.chars() {
if ['\"', '\\'].contains(&ch) {
name_.push('\\');
}
name_.push(ch);
}
self.user_full_name = name_.into();
}
pub fn with_user_full_name(mut self, name: &str) -> Self {
self.set_user_full_name(name);
self
}
pub fn set_env_variable(
&mut self,
name: impl Into<Cow<'static, str>>,
value: impl Into<Variable<'x>>,
) {
self.vars_env.insert(name.into(), value.into());
}
pub fn with_env_variable(
mut self,
name: impl Into<Cow<'static, str>>,
value: impl Into<Variable<'x>>,
) -> Self {
self.set_env_variable(name, value);
self
}
pub fn set_global_variable(
&mut self,
name: impl Into<Cow<'static, str>>,
value: impl Into<Variable<'x>>,
) {
self.vars_env.insert(name.into(), value.into());
}
pub fn with_global_variable(
mut self,
name: impl Into<Cow<'static, str>>,
value: impl Into<Variable<'x>>,
) -> Self {
self.set_global_variable(name, value);
self
}
pub fn set_medatata(
&mut self,
name: impl Into<Metadata<String>>,
value: impl Into<Cow<'x, str>>,
) {
self.metadata.push((name.into(), value.into()));
}
pub fn with_metadata(
mut self,
name: impl Into<Metadata<String>>,
value: impl Into<Cow<'x, str>>,
) -> Self {
self.set_medatata(name, value);
self
}
pub fn set_spam_status(&mut self, status: impl Into<SpamStatus>) {
self.spam_status = status.into();
}
pub fn with_spam_status(mut self, status: impl Into<SpamStatus>) -> Self {
self.set_spam_status(status);
self
}
pub fn set_virus_status(&mut self, status: impl Into<VirusStatus>) {
self.virus_status = status.into();
}
pub fn with_virus_status(mut self, status: impl Into<VirusStatus>) -> Self {
self.set_virus_status(status);
self
}
pub fn take_message(&mut self) -> Message<'x> {
std::mem::take(&mut self.message)
}
pub fn has_message_changed(&self) -> bool {
self.main_message_id > 0
}
pub(crate) fn user_from_field(&self) -> String {
if !self.user_full_name.is_empty() {
format!("\"{}\" <{}>", self.user_full_name, self.user_address)
} else {
self.user_address.to_string()
}
}
pub fn global_variable_names(&self) -> impl Iterator<Item = &str> {
self.vars_global.keys().map(|k| k.as_ref())
}
pub fn global_variable(&self, name: &str) -> Option<&Variable<'x>> {
self.vars_global.get(name)
}
pub fn message(&self) -> &Message<'x> {
&self.message
}
pub fn part(&self) -> usize {
self.part
}
}

@ -0,0 +1,499 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::cmp::Ordering;
use mail_parser::{
decoders::html::{html_to_text, text_to_html},
parsers::MessageStream,
Addr, Header, HeaderName, HeaderValue, Host, PartType, Received,
};
use crate::sieve::{
compiler::{
grammar::tests::test_plugin::Plugin, ContentTypePart, HeaderPart, HeaderVariable,
MessagePart, ReceivedHostname, ReceivedPart, Value, VariableType,
},
Context, Event, PluginArgument,
};
use super::Variable;
impl<'x> Context<'x> {
pub(crate) fn variable<'y: 'x>(&'y self, var: &VariableType) -> Option<Variable<'x>> {
match var {
VariableType::Local(var_num) => self.vars_local.get(*var_num).map(|v| v.as_ref()),
VariableType::Match(var_num) => self.vars_match.get(*var_num).map(|v| v.as_ref()),
VariableType::Global(var_name) => {
self.vars_global.get(var_name.as_str()).map(|v| v.as_ref())
}
VariableType::Environment(var_name) => self
.vars_env
.get(var_name.as_str())
.or_else(|| self.runtime.environment.get(var_name.as_str()))
.map(|v| v.as_ref()),
VariableType::Envelope(envelope) => self.envelope.iter().find_map(|(e, v)| {
if e == envelope {
Some(v.as_ref())
} else {
None
}
}),
VariableType::Header(header) => self.eval_header(header),
VariableType::Part(part) => match part {
MessagePart::TextBody(convert) => {
let part = self.message.parts.get(*self.message.text_body.first()?)?;
match &part.body {
PartType::Text(text) => Some(text.as_ref().into()),
PartType::Html(html) if *convert => {
Some(html_to_text(html.as_ref()).into())
}
_ => None,
}
}
MessagePart::HtmlBody(convert) => {
let part = self.message.parts.get(*self.message.html_body.first()?)?;
match &part.body {
PartType::Html(html) => Some(html.as_ref().into()),
PartType::Text(text) if *convert => {
Some(text_to_html(text.as_ref()).into())
}
_ => None,
}
}
MessagePart::Contents => match &self.message.parts.get(self.part)?.body {
PartType::Text(text) | PartType::Html(text) => {
Variable::from(text.as_ref()).into()
}
PartType::Binary(bin) | PartType::InlineBinary(bin) => {
Variable::from(String::from_utf8_lossy(bin.as_ref())).into()
}
_ => None,
},
MessagePart::Raw => {
let part = self.message.parts.get(self.part)?;
self.message
.raw_message()
.get(part.raw_body_offset()..part.raw_end_offset())
.map(|v| Variable::from(String::from_utf8_lossy(v)))
}
},
}
}
pub(crate) fn eval_value<'z: 'y, 'y>(&'z self, string: &'y Value) -> Variable<'y> {
match string {
Value::Text(text) => Variable::String(text.into()),
Value::Variable(var) => self.variable(var).unwrap_or_default(),
Value::List(list) => {
let mut data = String::new();
for item in list {
match item {
Value::Text(string) => {
data.push_str(string);
}
Value::Variable(var) => {
if let Some(value) = self.variable(var) {
data.push_str(&value.to_cow());
}
}
Value::List(_) => {
debug_assert!(false, "This should not have happened: {string:?}");
}
Value::Number(n) => {
data.push_str(&n.to_string());
}
Value::Expression(expr) => {
if let Some(value) = self.eval_expression(expr) {
data.push_str(&value.to_string());
}
}
Value::Regex(_) => (),
}
}
data.into()
}
Value::Number(n) => Variable::from(*n),
Value::Expression(expr) => self.eval_expression(expr).unwrap_or(Variable::default()),
Value::Regex(r) => Variable::StringRef(&r.expr),
}
}
fn eval_header<'z: 'x>(&'z self, header: &HeaderVariable) -> Option<Variable<'x>> {
let mut result = Vec::new();
let part = self.message.part(self.part)?;
let raw = self.message.raw_message();
if !header.name.is_empty() {
let mut headers = part
.headers
.iter()
.filter(|h| header.name.contains(&h.name));
match header.index_hdr.cmp(&0) {
Ordering::Greater => {
if let Some(h) = headers.nth((header.index_hdr - 1) as usize) {
header.eval_part(h, raw, &mut result);
}
}
Ordering::Less => {
if let Some(h) = headers
.rev()
.nth((header.index_hdr.unsigned_abs() - 1) as usize)
{
header.eval_part(h, raw, &mut result);
}
}
Ordering::Equal => {
for h in headers {
header.eval_part(h, raw, &mut result);
}
}
}
} else {
for h in &part.headers {
match &header.part {
HeaderPart::Raw => {
if let Some(var) = raw
.get(h.offset_field..h.offset_end)
.map(sanitize_raw_header)
{
result.push(Variable::from(var));
}
}
HeaderPart::Text => {
if let HeaderValue::Text(text) = &h.value {
result.push(Variable::from(format!("{}: {}", h.name.as_str(), text)));
} else if let HeaderValue::Text(text) =
MessageStream::new(raw.get(h.offset_start..h.offset_end).unwrap_or(b""))
.parse_unstructured()
{
result.push(Variable::from(format!("{}: {}", h.name.as_str(), text)));
}
}
_ => {
header.eval_part(h, raw, &mut result);
}
}
}
}
match result.len() {
1 => result.pop(),
0 => None,
_ => Some(Variable::Array(result)),
}
}
#[inline(always)]
pub(crate) fn eval_values<'z: 'y, 'y>(&'z self, strings: &'y [Value]) -> Vec<Variable<'y>> {
strings.iter().map(|s| self.eval_value(s)).collect()
}
#[inline(always)]
pub(crate) fn eval_values_owned(&self, strings: &[Value]) -> Vec<String> {
strings
.iter()
.map(|s| self.eval_value(s).into_cow().into_owned())
.collect()
}
pub(crate) fn eval_plugin_arguments(&self, plugin: &Plugin) -> Event {
let mut arguments = Vec::with_capacity(plugin.arguments.len());
for argument in &plugin.arguments {
arguments.push(match argument {
PluginArgument::Tag(tag) => PluginArgument::Tag(*tag),
PluginArgument::Text(t) => PluginArgument::Text(self.eval_value(t).into_string()),
PluginArgument::Number(n) => PluginArgument::Number(self.eval_value(n).to_number()),
PluginArgument::Regex(r) => PluginArgument::Regex(r.clone()),
PluginArgument::Array(a) => {
let mut arr = Vec::with_capacity(a.len());
for item in a {
arr.push(match item {
PluginArgument::Tag(tag) => PluginArgument::Tag(*tag),
PluginArgument::Text(t) => {
PluginArgument::Text(self.eval_value(t).into_string())
}
PluginArgument::Number(n) => {
PluginArgument::Number(self.eval_value(n).to_number())
}
PluginArgument::Regex(r) => PluginArgument::Regex(r.clone()),
PluginArgument::Variable(var) => PluginArgument::Variable(var.clone()),
PluginArgument::Array(_) => continue,
});
}
PluginArgument::Array(arr)
}
PluginArgument::Variable(var) => PluginArgument::Variable(var.clone()),
});
}
Event::Plugin {
id: plugin.id,
arguments,
}
}
}
impl HeaderVariable {
fn eval_part<'x>(&self, header: &'x Header<'x>, raw: &'x [u8], result: &mut Vec<Variable<'x>>) {
let var = match &self.part {
HeaderPart::Text => match &header.value {
HeaderValue::Text(v) if self.include_single_part() => {
Some(Variable::from(v.as_ref()))
}
HeaderValue::TextList(list) => match self.index_part.cmp(&0) {
Ordering::Greater => list
.get((self.index_part - 1) as usize)
.map(|v| Variable::from(v.as_ref())),
Ordering::Less => list
.iter()
.rev()
.nth((self.index_part.unsigned_abs() - 1) as usize)
.map(|v| Variable::from(v.as_ref())),
Ordering::Equal => {
for item in list {
result.push(Variable::from(item.as_ref()));
}
return;
}
},
HeaderValue::ContentType(ct) => if let Some(st) = &ct.c_subtype {
Variable::from(format!("{}/{}", ct.c_type, st))
} else {
Variable::from(ct.c_type.as_ref())
}
.into(),
HeaderValue::Address(list) => {
let mut list = list.iter();
match self.index_part.cmp(&0) {
Ordering::Greater => list
.nth((self.index_part - 1) as usize)
.map(|a| a.to_text()),
Ordering::Less => list
.rev()
.nth((self.index_part.unsigned_abs() - 1) as usize)
.map(|a| a.to_text()),
Ordering::Equal => {
for item in list {
result.push(item.to_text());
}
return;
}
}
}
HeaderValue::DateTime(_) => raw
.get(header.offset_start..header.offset_end)
.and_then(|bytes| std::str::from_utf8(bytes).ok())
.map(|s| s.trim())
.map(Variable::from),
_ => None,
},
HeaderPart::Address(addr) => match &header.value {
HeaderValue::Address(list) => {
let mut list = list.iter();
match self.index_part.cmp(&0) {
Ordering::Greater => list
.nth((self.index_part - 1) as usize)
.and_then(|a| addr.eval(a))
.map(Variable::from),
Ordering::Less => list
.rev()
.nth((self.index_part.unsigned_abs() - 1) as usize)
.and_then(|a| addr.eval(a))
.map(Variable::from),
Ordering::Equal => {
for item in list {
if let Some(part) = addr.eval(item) {
result.push(Variable::from(part));
}
}
return;
}
}
}
_ => None,
},
HeaderPart::Date => {
if let HeaderValue::DateTime(dt) = &header.value {
Variable::from(dt.to_timestamp()).into()
} else {
raw.get(header.offset_start..header.offset_end)
.and_then(|bytes| match MessageStream::new(bytes).parse_date() {
HeaderValue::DateTime(dt) => Variable::from(dt.to_timestamp()).into(),
_ => None,
})
}
}
HeaderPart::Id => match &header.name {
HeaderName::MessageId | HeaderName::ResentMessageId => match &header.value {
HeaderValue::Text(id) => Variable::from(id.as_ref()).into(),
HeaderValue::TextList(ids) => {
for id in ids {
result.push(Variable::from(id.as_ref()));
}
return;
}
_ => None,
},
HeaderName::Other(_) => {
match MessageStream::new(
raw.get(header.offset_start..header.offset_end)
.unwrap_or(b""),
)
.parse_id()
{
HeaderValue::Text(id) => Variable::from(id).into(),
HeaderValue::TextList(ids) => {
for id in ids {
result.push(Variable::from(id));
}
return;
}
_ => None,
}
}
_ => None,
},
HeaderPart::Raw => raw
.get(header.offset_start..header.offset_end)
.map(sanitize_raw_header)
.map(Variable::from),
_ => match (&header.value, &self.part) {
(HeaderValue::ContentType(ct), HeaderPart::ContentType(part)) => match part {
ContentTypePart::Type => Variable::from(ct.c_type.as_ref()).into(),
ContentTypePart::Subtype => {
ct.c_subtype.as_ref().map(|s| Variable::from(s.as_ref()))
}
ContentTypePart::Attribute(attr) => ct.attributes.as_ref().and_then(|attrs| {
attrs.iter().find_map(|(k, v)| {
if k.eq_ignore_ascii_case(attr) {
Some(Variable::from(v.as_ref()))
} else {
None
}
})
}),
},
(HeaderValue::Received(rcvd), HeaderPart::Received(part)) => part.eval(rcvd),
_ => None,
},
};
result.push(var.unwrap_or_default());
}
#[inline(always)]
fn include_single_part(&self) -> bool {
[-1, 0, 1].contains(&self.index_part)
}
}
impl ReceivedPart {
pub fn eval<'x>(&self, rcvd: &'x Received<'x>) -> Option<Variable<'x>> {
match self {
ReceivedPart::From(from) => rcvd
.from()
.or_else(|| rcvd.helo())
.and_then(|v| from.to_variable(v)),
ReceivedPart::FromIp => rcvd.from_ip().map(|ip| Variable::from(ip.to_string())),
ReceivedPart::FromIpRev => rcvd.from_iprev().map(Variable::from),
ReceivedPart::By(by) => rcvd.by().and_then(|v: &Host<'_>| by.to_variable(v)),
ReceivedPart::For => rcvd.for_().map(Variable::from),
ReceivedPart::With => rcvd.with().map(|v| Variable::from(v.as_str())),
ReceivedPart::TlsVersion => rcvd.tls_version().map(|v| Variable::from(v.as_str())),
ReceivedPart::TlsCipher => rcvd.tls_cipher().map(Variable::from),
ReceivedPart::Id => rcvd.id().map(Variable::from),
ReceivedPart::Ident => rcvd.ident().map(Variable::from),
ReceivedPart::Via => rcvd.via().map(Variable::from),
ReceivedPart::Date => rcvd.date().map(|d| Variable::from(d.to_timestamp())),
ReceivedPart::DateRaw => rcvd.date().map(|d| Variable::from(d.to_rfc822())),
}
}
}
trait AddrToText<'x> {
fn to_text<'z: 'x>(&'z self) -> Variable<'x>;
}
impl<'x> AddrToText<'x> for Addr<'x> {
fn to_text<'z: 'x>(&'z self) -> Variable<'x> {
if let Some(name) = &self.name {
if let Some(address) = &self.address {
Variable::String(format!("{name} <{address}>"))
} else {
Variable::StringRef(name.as_ref())
}
} else if let Some(address) = &self.address {
Variable::String(format!("<{address}>"))
} else {
Variable::StringRef("")
}
}
}
impl ReceivedHostname {
fn to_variable<'x>(&self, host: &'x Host<'x>) -> Option<Variable<'x>> {
match (self, host) {
(ReceivedHostname::Name, Host::Name(name)) => Variable::from(name.as_ref()).into(),
(ReceivedHostname::Ip, Host::IpAddr(ip)) => Variable::from(ip.to_string()).into(),
(ReceivedHostname::Any, _) => Variable::from(host.to_string()).into(),
_ => None,
}
}
}
pub(crate) trait IntoString: Sized {
fn into_string(self) -> String;
}
pub(crate) trait ToString: Sized {
fn to_string(&self) -> String;
}
impl IntoString for Vec<u8> {
fn into_string(self) -> String {
String::from_utf8(self)
.unwrap_or_else(|err| String::from_utf8_lossy(err.as_bytes()).into_owned())
}
}
fn sanitize_raw_header(bytes: &[u8]) -> String {
let mut result = Vec::with_capacity(bytes.len());
let mut last_is_space = false;
for &ch in bytes {
if ch.is_ascii_whitespace() {
last_is_space = true;
} else {
if last_is_space {
if !result.is_empty() {
result.push(b' ');
}
last_is_space = false;
}
result.push(ch);
}
}
result.into_string()
}

@ -0,0 +1,689 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::{cmp::Ordering, fmt::Display};
use crate::sieve::{compiler::Number, runtime::Variable, Context};
use crate::sieve::compiler::grammar::expr::{BinaryOperator, Expression, UnaryOperator};
impl<'x> Context<'x> {
pub(crate) fn eval_expression<'y: 'x, 'z>(
&'y self,
expr: &'z [Expression],
) -> Option<Variable<'x>> {
let mut stack = Vec::with_capacity(expr.len());
for expr in expr {
match expr {
Expression::Variable(v) => {
stack.push(self.variable(v).unwrap_or_default());
}
Expression::Number(val) => {
stack.push(Variable::from(*val));
}
Expression::String(val) => {
stack.push(Variable::from(val.to_string()));
}
Expression::UnaryOperator(op) => {
let value = stack.pop()?;
stack.push(match op {
UnaryOperator::Not => value.op_not(),
UnaryOperator::Minus => value.op_minus(),
});
}
Expression::BinaryOperator(op) => {
let right = stack.pop()?;
let left = stack.pop()?;
stack.push(match op {
BinaryOperator::Add => left.op_add(right),
BinaryOperator::Subtract => left.op_subtract(right),
BinaryOperator::Multiply => left.op_multiply(right),
BinaryOperator::Divide => left.op_divide(right),
BinaryOperator::And => left.op_and(right),
BinaryOperator::Or => left.op_or(right),
BinaryOperator::Xor => left.op_xor(right),
BinaryOperator::Eq => left.op_eq(right),
BinaryOperator::Ne => left.op_ne(right),
BinaryOperator::Lt => left.op_lt(right),
BinaryOperator::Le => left.op_le(right),
BinaryOperator::Gt => left.op_gt(right),
BinaryOperator::Ge => left.op_ge(right),
});
}
Expression::Function { id, num_args } => {
let num_args = *num_args as usize;
let mut args = vec![Variable::Integer(0); num_args];
for arg_num in 0..num_args {
args[num_args - arg_num - 1] = stack.pop()?;
}
stack.push((self.runtime.functions.get(*id as usize)?)(self, args));
}
}
}
stack.pop()
}
}
impl<'x> Variable<'x> {
fn op_add(self, other: Variable<'x>) -> Variable<'x> {
match (self, other) {
(Variable::Integer(a), Variable::Integer(b)) => Variable::Integer(a.saturating_add(b)),
(Variable::Float(a), Variable::Float(b)) => Variable::Float(a + b),
(Variable::Integer(i), Variable::Float(f))
| (Variable::Float(f), Variable::Integer(i)) => Variable::Float(i as f64 + f),
(Variable::Array(mut a), Variable::Array(b)) => {
a.extend(b);
Variable::Array(a)
}
(Variable::ArrayRef(a), Variable::ArrayRef(b)) => {
Variable::Array(a.iter().chain(b).map(|v| v.as_ref()).collect())
}
(Variable::Array(mut a), Variable::ArrayRef(b)) => {
a.extend(b.iter().map(|v| v.as_ref()));
Variable::Array(a)
}
(Variable::ArrayRef(a), Variable::Array(b)) => {
Variable::Array(a.iter().map(|v| v.as_ref()).chain(b).collect())
}
(Variable::Array(mut a), b) => {
a.push(b);
Variable::Array(a)
}
(Variable::ArrayRef(a), b) => {
Variable::Array(a.iter().map(|v| v.as_ref()).chain([b]).collect())
}
(a, Variable::Array(mut b)) => {
b.insert(0, a);
Variable::Array(b)
}
(a, Variable::ArrayRef(b)) => Variable::Array(
[a].into_iter()
.chain(b.iter().map(|v| v.as_ref()))
.collect(),
),
(Variable::String(a), b) => {
if !a.is_empty() {
Variable::String(format!("{}{}", a, b))
} else {
b
}
}
(a, Variable::String(b)) => {
if !b.is_empty() {
Variable::String(format!("{}{}", a, b))
} else {
a
}
}
(Variable::StringRef(a), b) => {
if !a.is_empty() {
Variable::String(format!("{}{}", a, b))
} else {
b
}
}
(a, Variable::StringRef(b)) => {
if !b.is_empty() {
Variable::String(format!("{}{}", a, b))
} else {
a
}
}
}
}
fn op_subtract(self, other: Variable<'x>) -> Variable<'x> {
match (self, other) {
(Variable::Integer(a), Variable::Integer(b)) => Variable::Integer(a.saturating_sub(b)),
(Variable::Float(a), Variable::Float(b)) => Variable::Float(a - b),
(Variable::Integer(a), Variable::Float(b)) => Variable::Float(a as f64 - b),
(Variable::Float(a), Variable::Integer(b)) => Variable::Float(a - b as f64),
(Variable::Array(mut a), b) | (b, Variable::Array(mut a)) => {
a.retain(|v| *v != b);
Variable::Array(a)
}
(a, b) => a.parse_number().op_subtract(b.parse_number()),
}
}
fn op_multiply(self, other: Variable<'x>) -> Variable<'x> {
match (self, other) {
(Variable::Integer(a), Variable::Integer(b)) => Variable::Integer(a.saturating_mul(b)),
(Variable::Float(a), Variable::Float(b)) => Variable::Float(a * b),
(Variable::Integer(i), Variable::Float(f))
| (Variable::Float(f), Variable::Integer(i)) => Variable::Float(i as f64 * f),
(a, b) => a.parse_number().op_multiply(b.parse_number()),
}
}
fn op_divide(self, other: Variable<'x>) -> Variable<'x> {
match (self, other) {
(Variable::Integer(a), Variable::Integer(b)) => {
Variable::Float(if b != 0 { a as f64 / b as f64 } else { 0.0 })
}
(Variable::Float(a), Variable::Float(b)) => {
Variable::Float(if b != 0.0 { a / b } else { 0.0 })
}
(Variable::Integer(a), Variable::Float(b)) => {
Variable::Float(if b != 0.0 { a as f64 / b } else { 0.0 })
}
(Variable::Float(a), Variable::Integer(b)) => {
Variable::Float(if b != 0 { a / b as f64 } else { 0.0 })
}
(a, b) => a.parse_number().op_divide(b.parse_number()),
}
}
fn op_and(self, other: Variable<'x>) -> Variable<'x> {
Variable::Integer(i64::from(self.to_bool() & other.to_bool()))
}
fn op_or(self, other: Variable<'x>) -> Variable<'x> {
Variable::Integer(i64::from(self.to_bool() | other.to_bool()))
}
fn op_xor(self, other: Variable<'x>) -> Variable<'x> {
Variable::Integer(i64::from(self.to_bool() ^ other.to_bool()))
}
fn op_eq(self, other: Variable<'x>) -> Variable<'x> {
Variable::Integer(i64::from(self == other))
}
fn op_ne(self, other: Variable<'x>) -> Variable<'x> {
Variable::Integer(i64::from(self != other))
}
fn op_lt(self, other: Variable<'x>) -> Variable<'x> {
Variable::Integer(i64::from(self < other))
}
fn op_le(self, other: Variable<'x>) -> Variable<'x> {
Variable::Integer(i64::from(self <= other))
}
fn op_gt(self, other: Variable<'x>) -> Variable<'x> {
Variable::Integer(i64::from(self > other))
}
fn op_ge(self, other: Variable<'x>) -> Variable<'x> {
Variable::Integer(i64::from(self >= other))
}
fn op_not(self) -> Variable<'x> {
Variable::Integer(i64::from(!self.to_bool()))
}
fn op_minus(self) -> Variable<'x> {
match self {
Variable::Integer(n) => Variable::Integer(-n),
Variable::Float(n) => Variable::Float(-n),
_ => self.parse_number().op_minus(),
}
}
pub fn parse_number(&self) -> Variable<'x> {
match self {
Variable::String(s) if !s.is_empty() => {
if let Ok(n) = s.parse::<i64>() {
Variable::Integer(n)
} else if let Ok(n) = s.parse::<f64>() {
Variable::Float(n)
} else {
Variable::Integer(0)
}
}
Variable::StringRef(s) if !s.is_empty() => {
if let Ok(n) = s.parse::<i64>() {
Variable::Integer(n)
} else if let Ok(n) = s.parse::<f64>() {
Variable::Float(n)
} else {
Variable::Integer(0)
}
}
Variable::Integer(n) => Variable::Integer(*n),
Variable::Float(n) => Variable::Float(*n),
Variable::Array(l) => Variable::Integer(l.is_empty() as i64),
_ => Variable::Integer(0),
}
}
pub fn to_bool(&self) -> bool {
match self {
Variable::Float(f) => *f != 0.0,
Variable::Integer(n) => *n != 0,
Variable::String(s) => !s.is_empty(),
Variable::StringRef(s) => !s.is_empty(),
Variable::Array(a) => !a.is_empty(),
Variable::ArrayRef(a) => !a.is_empty(),
}
}
}
impl<'x> PartialEq for Variable<'x> {
fn eq(&self, other: &Self) -> bool {
match (self, other) {
(Self::Integer(a), Self::Integer(b)) => a == b,
(Self::Float(a), Self::Float(b)) => a == b,
(Self::Integer(a), Self::Float(b)) | (Self::Float(b), Self::Integer(a)) => {
*a as f64 == *b
}
(Self::String(a), Self::String(b)) => a == b,
(Self::StringRef(a), Self::StringRef(b)) => a == b,
(Self::String(a), Self::StringRef(b)) | (Self::StringRef(b), Self::String(a)) => a == b,
(Self::String(_) | Self::StringRef(_), Self::Integer(_) | Self::Float(_)) => {
&self.parse_number() == other
}
(Self::Integer(_) | Self::Float(_), Self::String(_) | Self::StringRef(_)) => {
self == &other.parse_number()
}
(Self::Array(a), Self::Array(b)) => a == b,
(Self::ArrayRef(a), Self::ArrayRef(b)) => a == b,
(Self::Array(a), Self::ArrayRef(b)) | (Self::ArrayRef(b), Self::Array(a)) => a == *b,
_ => false,
}
}
}
impl Eq for Variable<'_> {}
impl<'x> PartialOrd for Variable<'x> {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
match (self, other) {
(Self::Integer(a), Self::Integer(b)) => a.partial_cmp(b),
(Self::Float(a), Self::Float(b)) => a.partial_cmp(b),
(Self::Integer(a), Self::Float(b)) => (*a as f64).partial_cmp(b),
(Self::Float(a), Self::Integer(b)) => a.partial_cmp(&(*b as f64)),
(Self::String(a), Self::String(b)) => a.partial_cmp(b),
(Self::StringRef(a), Self::StringRef(b)) => a.partial_cmp(b),
(Self::String(a), Self::StringRef(b)) => a.as_str().partial_cmp(*b),
(Self::StringRef(a), Self::String(b)) => a.partial_cmp(&b.as_str()),
(Self::String(_) | Self::StringRef(_), Self::Integer(_) | Self::Float(_)) => {
self.parse_number().partial_cmp(other)
}
(Self::Integer(_) | Self::Float(_), Self::String(_) | Self::StringRef(_)) => {
self.partial_cmp(&other.parse_number())
}
(Self::Array(a), Self::Array(b)) => a.partial_cmp(b),
(Self::ArrayRef(a), Self::ArrayRef(b)) => a.partial_cmp(b),
(Self::Array(a), Self::ArrayRef(b)) => a.partial_cmp(b),
(Self::ArrayRef(a), Self::Array(b)) => a.partial_cmp(&b),
(Self::Array(_) | Self::ArrayRef(_) | Self::String(_) | Self::StringRef(_), _) => {
Ordering::Greater.into()
}
(_, Self::Array(_) | Self::ArrayRef(_)) => Ordering::Less.into(),
}
}
}
impl<'x> Ord for Variable<'x> {
fn cmp(&self, other: &Self) -> std::cmp::Ordering {
self.partial_cmp(other).unwrap_or(Ordering::Greater)
}
}
impl Display for Variable<'_> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Variable::String(v) => v.fmt(f),
Variable::StringRef(v) => v.fmt(f),
Variable::Integer(v) => v.fmt(f),
Variable::Float(v) => v.fmt(f),
Variable::Array(v) => {
for (i, v) in v.iter().enumerate() {
if i > 0 {
f.write_str("\n")?;
}
v.fmt(f)?;
}
Ok(())
}
Variable::ArrayRef(v) => {
for (i, v) in v.iter().enumerate() {
if i > 0 {
f.write_str("\n")?;
}
v.fmt(f)?;
}
Ok(())
}
}
}
}
impl Number {
pub fn is_non_zero(&self) -> bool {
match self {
Number::Integer(n) => *n != 0,
Number::Float(n) => *n != 0.0,
}
}
}
impl Default for Number {
fn default() -> Self {
Number::Integer(0)
}
}
trait IntoBool {
fn into_bool(self) -> bool;
}
impl IntoBool for f64 {
#[inline(always)]
fn into_bool(self) -> bool {
self != 0.0
}
}
impl IntoBool for i64 {
#[inline(always)]
fn into_bool(self) -> bool {
self != 0
}
}
impl From<bool> for Number {
#[inline(always)]
fn from(b: bool) -> Self {
Number::Integer(i64::from(b))
}
}
impl From<i64> for Number {
#[inline(always)]
fn from(n: i64) -> Self {
Number::Integer(n)
}
}
impl From<f64> for Number {
#[inline(always)]
fn from(n: f64) -> Self {
Number::Float(n)
}
}
impl From<i32> for Number {
#[inline(always)]
fn from(n: i32) -> Self {
Number::Integer(n as i64)
}
}
#[cfg(test)]
mod test {
use ahash::{HashMap, HashMapExt};
use crate::sieve::{
compiler::{
grammar::expr::{
parser::ExpressionParser, tokenizer::Tokenizer, BinaryOperator, Expression, Token,
UnaryOperator,
},
VariableType,
},
runtime::Variable,
};
use evalexpr::*;
pub trait EvalExpression {
fn eval(&self, variables: &HashMap<String, Variable>) -> Option<Variable>;
}
impl EvalExpression for Vec<Expression> {
fn eval(&self, variables: &HashMap<String, Variable>) -> Option<Variable> {
let mut stack = Vec::with_capacity(self.len());
for expr in self.iter() {
match expr {
Expression::Variable(VariableType::Global(v)) => {
stack.push(variables.get(v)?.as_ref().into_owned());
}
Expression::Number(val) => {
stack.push(Variable::from(*val));
}
Expression::String(val) => {
stack.push(Variable::from(val.to_string()));
}
Expression::UnaryOperator(op) => {
let value = stack.pop()?;
stack.push(match op {
UnaryOperator::Not => value.op_not(),
UnaryOperator::Minus => value.op_minus(),
});
}
Expression::BinaryOperator(op) => {
let right = stack.pop()?;
let left = stack.pop()?;
stack.push(match op {
BinaryOperator::Add => left.op_add(right),
BinaryOperator::Subtract => left.op_subtract(right),
BinaryOperator::Multiply => left.op_multiply(right),
BinaryOperator::Divide => left.op_divide(right),
BinaryOperator::And => left.op_and(right),
BinaryOperator::Or => left.op_or(right),
BinaryOperator::Xor => left.op_xor(right),
BinaryOperator::Eq => left.op_eq(right),
BinaryOperator::Ne => left.op_ne(right),
BinaryOperator::Lt => left.op_lt(right),
BinaryOperator::Le => left.op_le(right),
BinaryOperator::Gt => left.op_gt(right),
BinaryOperator::Ge => left.op_ge(right),
});
}
_ => unreachable!("Invalid expression"),
}
}
stack.pop()
}
}
#[test]
fn eval_expression() {
let mut variables = HashMap::from_iter([
("A".to_string(), Variable::Integer(0)),
("B".to_string(), Variable::Integer(0)),
("C".to_string(), Variable::Integer(0)),
("D".to_string(), Variable::Integer(0)),
("E".to_string(), Variable::Integer(0)),
("F".to_string(), Variable::Integer(0)),
("G".to_string(), Variable::Integer(0)),
("H".to_string(), Variable::Integer(0)),
("I".to_string(), Variable::Integer(0)),
("J".to_string(), Variable::Integer(0)),
]);
let num_vars = variables.len();
for expr in [
"A + B",
"A * B",
"A / B",
"A - B",
"-A",
"A == B",
"A != B",
"A > B",
"A < B",
"A >= B",
"A <= B",
"A + B * C - D / E",
"A + B + C - D - E",
"(A + B) * (C - D) / E",
"A - B + C * D / E * F - G",
"A + B * C - D / E",
"(A + B) * (C - D) / E",
"A - B + C / D * E",
"(A + B) / (C - D) + E",
"A * (B + C) - D / E",
"A / (B - C + D) * E",
"(A + B) * C - D / (E + F)",
"A * B - C + D / E",
"A + B - C * D / E",
"(A * B + C) / D - E",
"A - B / C + D * E",
"A + B * (C - D) / E",
"A * B / C + (D - E)",
"(A - B) * C / D + E",
"A * (B / C) - D + E",
"(A + B) / (C + D) * E",
"A - B * C / D + E",
"A + (B - C) * D / E",
"(A + B) * (C / D) - E",
"A - B / (C * D) + E",
"(A + B) > (C - D) && E <= F",
"A * B == C / D || E - F != G + H",
"A / B >= C * D && E + F < G - H",
"(A * B - C) != (D / E + F) && G > H",
"A - B < C && D + E >= F * G",
"(A * B) > C && (D / E) < F || G == H",
"(A + B) <= (C - D) || E > F && G != H",
"A * B != C + D || E - F == G / H",
"A >= B * C && D < E - F || G != H + I",
"(A / B + C) > D && E * F <= G - H",
"A * (B - C) == D && E / F > G + H",
"(A - B + C) != D || E * F >= G && H < I",
"A < B / C && D + E * F == G - H",
"(A + B * C) <= D && E > F / G",
"(A * B - C) > D || E <= F + G && H != I",
"A != B / C && D == E * F - G",
"A <= B + C - D && E / F > G * H",
"(A - B * C) < D || E >= F + G && H != I",
"(A + B) / C == D && E - F < G * H",
"A * B != C && D >= E + F / G || H < I",
"!(A * B != C) && !(D >= E + F / G) || !(H < I)",
"-A - B - (- C - D) - E - (-F)",
] {
for (pos, v) in variables.values_mut().enumerate() {
*v = Variable::Integer(pos as i64 + 1);
}
assert_expr(expr, &variables);
for (pos, v) in variables.values_mut().enumerate() {
*v = Variable::Integer((num_vars - pos) as i64);
}
assert_expr(expr, &variables);
}
for expr in [
"true && false",
"!true || false",
"true && !false",
"!(true && false)",
"true || true && false",
"!false && (true || false)",
"!(true || !false) && true",
"!(!true && !false)",
"true || false && !true",
"!(true && true) || !false",
"!(!true || !false) && (!false) && !(!true)",
] {
let pexp = parse_expression(expr.replace("true", "1").replace("false", "0").as_str());
let result = pexp.eval(&HashMap::new()).unwrap();
//println!("{} => {:?}", expr, result);
match (eval(expr).expect(expr), result) {
(Value::Float(a), Variable::Float(b)) if a == b => (),
(Value::Float(a), Variable::Integer(b)) if a == b as f64 => (),
(Value::Boolean(a), Variable::Integer(b)) if a == (b != 0) => (),
(a, b) => {
panic!("{} => {:?} != {:?}", expr, a, b)
}
}
}
}
fn assert_expr(expr: &str, variables: &HashMap<String, Variable>) {
let e = parse_expression(expr);
let result = e.eval(variables).unwrap();
let mut str_expr = expr.to_string();
let mut str_expr_float = expr.to_string();
for (k, v) in variables {
let v = v.to_string();
if v.contains('.') {
str_expr_float = str_expr_float.replace(k, &v);
} else {
str_expr_float = str_expr_float.replace(k, &format!("{}.0", v));
}
str_expr = str_expr.replace(k, &v);
}
assert_eq!(
parse_expression(&str_expr)
.eval(&HashMap::new())
.unwrap()
.to_number()
.to_float(),
result.to_number().to_float()
);
assert_eq!(
parse_expression(&str_expr_float)
.eval(&HashMap::new())
.unwrap()
.to_number()
.to_float(),
result.to_number().to_float()
);
//println!("{str_expr} ({e:?}) => {result:?}");
match (
eval(&str_expr_float)
.map(|v| {
// Divisions by zero are converted to 0.0
if matches!(&v, Value::Float(f) if f.is_infinite()) {
Value::Float(0.0)
} else {
v
}
})
.expect(&str_expr),
result,
) {
(Value::Float(a), Variable::Float(b)) if a == b => (),
(Value::Float(a), Variable::Integer(b)) if a == b as f64 => (),
(Value::Boolean(a), Variable::Integer(b)) if a == (b != 0) => (),
(a, b) => {
panic!("{} => {:?} != {:?}", str_expr, a, b)
}
}
}
fn parse_expression(expr: &str) -> Vec<Expression> {
ExpressionParser::from_tokenizer(Tokenizer::new(expr, |var_name: &str, _: bool| {
Ok::<_, String>(Token::Variable(VariableType::Global(var_name.to_string())))
}))
.parse()
.unwrap()
.output
}
}

@ -0,0 +1,871 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
pub mod actions;
pub mod context;
pub mod eval;
pub mod expression;
pub mod serialize;
pub mod tests;
pub mod variables;
pub(self) use std::iter::FromIterator;
pub(self) use std::iter::IntoIterator;
use std::{borrow::Cow, fmt::Display, ops::Deref, sync::Arc};
use ahash::{AHashMap, AHashSet};
use mail_parser::{Encoding, HeaderName, Message, MessageParser, MessagePart, PartType};
use crate::sieve::{
compiler::{
grammar::{Capability, Invalid},
Number, Regex, VariableType,
},
Context, Function, FunctionMap, Input, Metadata, PluginArgument, Runtime, Script, SetVariable,
Sieve,
};
use self::eval::ToString;
#[derive(Debug, Clone)]
pub enum Variable<'x> {
String(String),
StringRef(&'x str),
Integer(i64),
Float(f64),
Array(Vec<Variable<'x>>),
ArrayRef(&'x Vec<Variable<'x>>),
}
#[derive(Debug)]
pub enum RuntimeError {
TooManyIncludes,
InvalidInstruction(Invalid),
ScriptErrorMessage(String),
CapabilityNotAllowed(Capability),
CapabilityNotSupported(String),
CPULimitReached,
}
impl<'x> Default for Variable<'x> {
fn default() -> Self {
Variable::StringRef("")
}
}
impl<'x> Variable<'x> {
pub fn into_cow(self) -> Cow<'x, str> {
match self {
Variable::String(s) => Cow::Owned(s),
Variable::StringRef(s) => Cow::Borrowed(s),
Variable::Integer(n) => Cow::Owned(n.to_string()),
Variable::Float(n) => Cow::Owned(n.to_string()),
Variable::Array(l) => Cow::Owned(l.to_string()),
Variable::ArrayRef(l) => Cow::Owned(l.to_string()),
}
}
pub fn to_cow<'y: 'x>(&'y self) -> Cow<'x, str> {
match self {
Variable::String(s) => Cow::Borrowed(s.as_str()),
Variable::StringRef(s) => Cow::Borrowed(*s),
Variable::Integer(n) => Cow::Owned(n.to_string()),
Variable::Float(n) => Cow::Owned(n.to_string()),
Variable::Array(l) => Cow::Owned(l.to_string()),
Variable::ArrayRef(l) => Cow::Owned(l.to_string()),
}
}
pub fn into_string(self) -> String {
match self {
Variable::String(s) => s,
Variable::StringRef(s) => s.to_string(),
Variable::Integer(n) => n.to_string(),
Variable::Float(n) => n.to_string(),
Variable::Array(l) => l.to_string(),
Variable::ArrayRef(l) => l.to_string(),
}
}
pub fn to_number(&self) -> Number {
self.to_number_checked()
.unwrap_or(Number::Float(f64::INFINITY))
}
pub fn to_number_checked(&self) -> Option<Number> {
let s = match self {
Variable::Integer(n) => return Number::Integer(*n).into(),
Variable::Float(n) => return Number::Float(*n).into(),
Variable::String(s) if !s.is_empty() => s.as_str(),
Variable::StringRef(s) if !s.is_empty() => *s,
_ => return None,
};
if !s.contains('.') {
s.parse::<i64>().map(Number::Integer).ok()
} else {
s.parse::<f64>().map(Number::Float).ok()
}
}
pub fn to_integer(&self) -> i64 {
match self {
Variable::Integer(n) => *n,
Variable::Float(n) => *n as i64,
Variable::String(s) if !s.is_empty() => s.parse::<i64>().unwrap_or(0),
Variable::StringRef(s) if !s.is_empty() => s.parse::<i64>().unwrap_or(0),
_ => 0,
}
}
pub fn len(&self) -> usize {
match self {
Variable::String(s) => s.len(),
Variable::StringRef(s) => s.len(),
Variable::Integer(_) | Variable::Float(_) => 2,
Variable::Array(l) => l.iter().map(|v| v.len() + 2).sum(),
Variable::ArrayRef(l) => l.iter().map(|v| v.len() + 2).sum(),
}
}
pub fn is_empty(&self) -> bool {
match self {
Variable::String(s) => s.is_empty(),
Variable::StringRef(s) => s.is_empty(),
_ => false,
}
}
pub fn to_owned(&self) -> Variable<'static> {
match self {
Variable::String(s) => Variable::String(s.to_string()),
Variable::StringRef(s) => Variable::String(s.to_string()),
Variable::Integer(n) => Variable::Integer(*n),
Variable::Float(n) => Variable::Float(*n),
Variable::Array(l) => Variable::Array(l.iter().map(Variable::to_owned).collect()),
Variable::ArrayRef(l) => Variable::Array(l.iter().map(Variable::to_owned).collect()),
}
}
pub fn into_owned(self) -> Variable<'static> {
match self {
Variable::String(s) => Variable::String(s),
Variable::StringRef(s) => Variable::String(s.to_string()),
Variable::Integer(n) => Variable::Integer(n),
Variable::Float(n) => Variable::Float(n),
Variable::Array(l) => {
Variable::Array(l.into_iter().map(Variable::into_owned).collect())
}
Variable::ArrayRef(l) => Variable::Array(l.iter().map(Variable::to_owned).collect()),
}
}
pub fn as_ref<'y: 'x>(&'y self) -> Variable<'x> {
match self {
Variable::String(s) => Variable::StringRef(s.as_str()),
Variable::StringRef(s) => Variable::StringRef(s),
Variable::Integer(n) => Variable::Integer(*n),
Variable::Float(n) => Variable::Float(*n),
Variable::Array(l) => Variable::ArrayRef(l),
Variable::ArrayRef(l) => Variable::ArrayRef(l),
}
}
}
impl<'x> From<&'x str> for Variable<'x> {
fn from(s: &'x str) -> Self {
Variable::StringRef(s)
}
}
impl From<String> for Variable<'_> {
fn from(s: String) -> Self {
Variable::String(s)
}
}
impl<'x> From<&'x String> for Variable<'x> {
fn from(s: &'x String) -> Self {
Variable::StringRef(s.as_str())
}
}
impl<'x> From<Cow<'x, str>> for Variable<'x> {
fn from(s: Cow<'x, str>) -> Self {
match s {
Cow::Borrowed(s) => Variable::StringRef(s),
Cow::Owned(s) => Variable::String(s),
}
}
}
impl<'x> From<Vec<Variable<'x>>> for Variable<'x> {
fn from(l: Vec<Variable<'x>>) -> Self {
Variable::Array(l)
}
}
impl From<Number> for Variable<'_> {
fn from(n: Number) -> Self {
match n {
Number::Integer(n) => Variable::Integer(n),
Number::Float(n) => Variable::Float(n),
}
}
}
impl From<usize> for Variable<'_> {
fn from(n: usize) -> Self {
Variable::Integer(n as i64)
}
}
impl From<i64> for Variable<'_> {
fn from(n: i64) -> Self {
Variable::Integer(n)
}
}
impl From<u64> for Variable<'_> {
fn from(n: u64) -> Self {
Variable::Integer(n as i64)
}
}
impl From<f64> for Variable<'_> {
fn from(n: f64) -> Self {
Variable::Float(n)
}
}
impl From<i32> for Variable<'_> {
fn from(n: i32) -> Self {
Variable::Integer(n as i64)
}
}
impl From<bool> for Variable<'_> {
fn from(b: bool) -> Self {
Variable::Integer(i64::from(b))
}
}
impl PartialEq for Number {
fn eq(&self, other: &Self) -> bool {
match (self, other) {
(Self::Integer(a), Self::Integer(b)) => a == b,
(Self::Float(a), Self::Float(b)) => a == b,
(Self::Integer(a), Self::Float(b)) => (*a as f64) == *b,
(Self::Float(a), Self::Integer(b)) => *a == (*b as f64),
}
}
}
impl Eq for Number {}
impl PartialOrd for Number {
fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
let (a, b) = match (self, other) {
(Number::Integer(a), Number::Integer(b)) => return a.partial_cmp(b),
(Number::Float(a), Number::Float(b)) => (*a, *b),
(Number::Integer(a), Number::Float(b)) => (*a as f64, *b),
(Number::Float(a), Number::Integer(b)) => (*a, *b as f64),
};
a.partial_cmp(&b)
}
}
impl<'x> self::eval::ToString for Vec<Variable<'x>> {
fn to_string(&self) -> String {
let mut result = String::with_capacity(self.len() * 10);
for item in self {
if !result.is_empty() {
result.push_str("\r\n");
}
match item {
Variable::String(v) => result.push_str(v),
Variable::StringRef(v) => result.push_str(v),
Variable::Integer(v) => result.push_str(&v.to_string()),
Variable::Float(v) => result.push_str(&v.to_string()),
Variable::Array(_) | Variable::ArrayRef(_) => {}
}
}
result
}
}
impl PluginArgument<String, Number> {
pub fn unwrap_string(self) -> Option<String> {
match self {
PluginArgument::Text(s) => s.into(),
PluginArgument::Number(n) => n.to_string().into(),
_ => None,
}
}
pub fn unwrap_number(self) -> Option<Number> {
match self {
PluginArgument::Number(n) => n.into(),
_ => None,
}
}
pub fn unwrap_regex(self) -> Option<Regex> {
match self {
PluginArgument::Regex(r) => r.into(),
_ => None,
}
}
pub fn unwrap_array(self) -> Option<Vec<Self>> {
match self {
PluginArgument::Array(a) => a.into(),
_ => None,
}
}
pub fn unwrap_variable(self) -> Option<VariableType> {
match self {
PluginArgument::Variable(v) => v.into(),
_ => None,
}
}
pub fn unwrap_string_array(self) -> Option<Vec<String>> {
match self {
PluginArgument::Array(a) => a
.into_iter()
.filter_map(Self::unwrap_string)
.collect::<Vec<_>>()
.into(),
_ => None,
}
}
pub fn unwrap_number_array(self) -> Option<Vec<Number>> {
match self {
PluginArgument::Array(a) => a
.into_iter()
.filter_map(Self::unwrap_number)
.collect::<Vec<_>>()
.into(),
_ => None,
}
}
pub fn unwrap_regex_array(self) -> Option<Vec<Regex>> {
match self {
PluginArgument::Array(a) => a
.into_iter()
.filter_map(Self::unwrap_regex)
.collect::<Vec<_>>()
.into(),
_ => None,
}
}
pub fn unwrap_variable_array(self) -> Option<Vec<VariableType>> {
match self {
PluginArgument::Array(a) => a
.into_iter()
.filter_map(Self::unwrap_variable)
.collect::<Vec<_>>()
.into(),
_ => None,
}
}
}
impl Runtime {
pub fn new() -> Self {
#[allow(unused_mut)]
let mut allowed_capabilities = AHashSet::from_iter(Capability::all().iter().cloned());
#[cfg(test)]
allowed_capabilities.insert(Capability::Other("vnd.stalwart.testsuite".to_string()));
Runtime {
allowed_capabilities,
environment: AHashMap::from_iter([
("name".into(), "Stalwart Sieve".into()),
("version".into(), env!("CARGO_PKG_VERSION").into()),
]),
metadata: Vec::new(),
include_scripts: AHashMap::new(),
max_nested_includes: 3,
cpu_limit: 5000,
max_variable_size: 4096,
max_redirects: 1,
max_received_headers: 10,
protected_headers: vec![
HeaderName::Other("Original-Subject".into()),
HeaderName::Other("Original-From".into()),
],
valid_notification_uris: AHashSet::new(),
valid_ext_lists: AHashSet::new(),
vacation_use_orig_rcpt: false,
vacation_default_subject: "Automated reply".into(),
vacation_subject_prefix: "Auto: ".into(),
max_header_size: 1024,
max_out_messages: 3,
default_vacation_expiry: 30 * 86400,
default_duplicate_expiry: 7 * 86400,
local_hostname: "localhost".into(),
functions: Vec::new(),
}
}
pub fn set_cpu_limit(&mut self, size: usize) {
self.cpu_limit = size;
}
pub fn with_cpu_limit(mut self, size: usize) -> Self {
self.cpu_limit = size;
self
}
pub fn set_max_nested_includes(&mut self, size: usize) {
self.max_nested_includes = size;
}
pub fn with_max_nested_includes(mut self, size: usize) -> Self {
self.max_nested_includes = size;
self
}
pub fn set_max_redirects(&mut self, size: usize) {
self.max_redirects = size;
}
pub fn with_max_redirects(mut self, size: usize) -> Self {
self.max_redirects = size;
self
}
pub fn set_max_out_messages(&mut self, size: usize) {
self.max_out_messages = size;
}
pub fn with_max_out_messages(mut self, size: usize) -> Self {
self.max_out_messages = size;
self
}
pub fn set_max_received_headers(&mut self, size: usize) {
self.max_received_headers = size;
}
pub fn with_max_received_headers(mut self, size: usize) -> Self {
self.max_received_headers = size;
self
}
pub fn set_max_variable_size(&mut self, size: usize) {
self.max_variable_size = size;
}
pub fn with_max_variable_size(mut self, size: usize) -> Self {
self.max_variable_size = size;
self
}
pub fn set_max_header_size(&mut self, size: usize) {
self.max_header_size = size;
}
pub fn with_max_header_size(mut self, size: usize) -> Self {
self.max_header_size = size;
self
}
pub fn set_default_vacation_expiry(&mut self, expiry: u64) {
self.default_vacation_expiry = expiry;
}
pub fn with_default_vacation_expiry(mut self, expiry: u64) -> Self {
self.default_vacation_expiry = expiry;
self
}
pub fn set_default_duplicate_expiry(&mut self, expiry: u64) {
self.default_duplicate_expiry = expiry;
}
pub fn with_default_duplicate_expiry(mut self, expiry: u64) -> Self {
self.default_duplicate_expiry = expiry;
self
}
pub fn set_capability(&mut self, capability: impl Into<Capability>) {
self.allowed_capabilities.insert(capability.into());
}
pub fn with_capability(mut self, capability: impl Into<Capability>) -> Self {
self.set_capability(capability);
self
}
pub fn unset_capability(&mut self, capability: impl Into<Capability>) {
self.allowed_capabilities.remove(&capability.into());
}
pub fn without_capability(mut self, capability: impl Into<Capability>) -> Self {
self.unset_capability(capability);
self
}
pub fn without_capabilities(
mut self,
capabilities: impl IntoIterator<Item = impl Into<Capability>>,
) -> Self {
for capability in capabilities {
self.allowed_capabilities.remove(&capability.into());
}
self
}
pub fn set_protected_header(&mut self, header_name: impl Into<Cow<'static, str>>) {
if let Some(header_name) = HeaderName::parse(header_name) {
self.protected_headers.push(header_name);
}
}
pub fn with_protected_header(mut self, header_name: impl Into<Cow<'static, str>>) -> Self {
self.set_protected_header(header_name);
self
}
pub fn with_protected_headers(
mut self,
header_names: impl IntoIterator<Item = impl Into<Cow<'static, str>>>,
) -> Self {
self.protected_headers = header_names
.into_iter()
.filter_map(HeaderName::parse)
.collect();
self
}
pub fn set_env_variable(
&mut self,
name: impl Into<Cow<'static, str>>,
value: impl Into<Variable<'static>>,
) {
self.environment.insert(name.into(), value.into());
}
pub fn with_env_variable(
mut self,
name: impl Into<Cow<'static, str>>,
value: impl Into<Cow<'static, str>>,
) -> Self {
self.set_env_variable(name.into(), value.into());
self
}
pub fn set_medatata(
&mut self,
name: impl Into<Metadata<String>>,
value: impl Into<Cow<'static, str>>,
) {
self.metadata.push((name.into(), value.into()));
}
pub fn with_metadata(
mut self,
name: impl Into<Metadata<String>>,
value: impl Into<Cow<'static, str>>,
) -> Self {
self.set_medatata(name, value);
self
}
pub fn set_valid_notification_uri(&mut self, uri: impl Into<Cow<'static, str>>) {
self.valid_notification_uris.insert(uri.into());
}
pub fn with_valid_notification_uri(mut self, uri: impl Into<Cow<'static, str>>) -> Self {
self.valid_notification_uris.insert(uri.into());
self
}
pub fn with_valid_notification_uris(
mut self,
uris: impl IntoIterator<Item = impl Into<Cow<'static, str>>>,
) -> Self {
self.valid_notification_uris = uris.into_iter().map(Into::into).collect();
self
}
pub fn set_valid_ext_list(&mut self, name: impl Into<Cow<'static, str>>) {
self.valid_ext_lists.insert(name.into());
}
pub fn with_valid_ext_list(mut self, name: impl Into<Cow<'static, str>>) -> Self {
self.set_valid_ext_list(name);
self
}
pub fn set_vacation_use_orig_rcpt(&mut self, value: bool) {
self.vacation_use_orig_rcpt = value;
}
pub fn with_valid_ext_lists(
mut self,
lists: impl IntoIterator<Item = impl Into<Cow<'static, str>>>,
) -> Self {
self.valid_ext_lists = lists.into_iter().map(Into::into).collect();
self
}
pub fn with_vacation_use_orig_rcpt(mut self, value: bool) -> Self {
self.set_vacation_use_orig_rcpt(value);
self
}
pub fn set_vacation_default_subject(&mut self, value: impl Into<Cow<'static, str>>) {
self.vacation_default_subject = value.into();
}
pub fn with_vacation_default_subject(mut self, value: impl Into<Cow<'static, str>>) -> Self {
self.set_vacation_default_subject(value);
self
}
pub fn set_vacation_subject_prefix(&mut self, value: impl Into<Cow<'static, str>>) {
self.vacation_subject_prefix = value.into();
}
pub fn with_vacation_subject_prefix(mut self, value: impl Into<Cow<'static, str>>) -> Self {
self.set_vacation_subject_prefix(value);
self
}
pub fn set_local_hostname(&mut self, value: impl Into<Cow<'static, str>>) {
self.local_hostname = value.into();
}
pub fn with_local_hostname(mut self, value: impl Into<Cow<'static, str>>) -> Self {
self.set_local_hostname(value);
self
}
pub fn with_functions(mut self, fnc_map: &mut FunctionMap) -> Self {
self.functions = std::mem::take(&mut fnc_map.functions);
self
}
pub fn set_functions(&mut self, fnc_map: &mut FunctionMap) {
self.functions = std::mem::take(&mut fnc_map.functions);
}
pub fn filter<'z: 'x, 'x>(&'z self, raw_message: &'x [u8]) -> Context<'x> {
Context::new(
self,
MessageParser::new()
.parse(raw_message)
.unwrap_or_else(|| Message {
parts: vec![MessagePart {
headers: vec![],
is_encoding_problem: false,
body: PartType::Text("".into()),
encoding: Encoding::None,
offset_header: 0,
offset_body: 0,
offset_end: 0,
}],
raw_message: b""[..].into(),
..Default::default()
}),
)
}
pub fn filter_parsed<'z: 'x, 'x>(&'z self, message: Message<'x>) -> Context<'x> {
Context::new(self, message)
}
}
impl FunctionMap {
pub fn new() -> Self {
Self::default()
}
pub fn with_function(self, name: impl Into<String>, fnc: Function) -> Self {
self.with_function_args(name, fnc, 1)
}
pub fn with_function_no_args(self, name: impl Into<String>, fnc: Function) -> Self {
self.with_function_args(name, fnc, 0)
}
pub fn with_function_args(
mut self,
name: impl Into<String>,
fnc: Function,
num_args: u32,
) -> Self {
self.map
.insert(name.into(), (self.functions.len() as u32, num_args));
self.functions.push(fnc);
self
}
}
impl Default for Runtime {
fn default() -> Self {
Self::new()
}
}
impl Input {
pub fn script(name: impl Into<Script>, script: impl Into<Arc<Sieve>>) -> Self {
Input::Script {
name: name.into(),
script: script.into(),
}
}
pub fn success() -> Self {
Input::True
}
pub fn fail() -> Self {
Input::False
}
pub fn variables(list: Vec<SetVariable>) -> Self {
Input::Variables { list }
}
}
impl From<bool> for Input {
fn from(value: bool) -> Self {
if value {
Input::True
} else {
Input::False
}
}
}
impl Deref for Script {
type Target = String;
fn deref(&self) -> &Self::Target {
match self {
Script::Personal(name) | Script::Global(name) => name,
}
}
}
impl AsRef<str> for Script {
fn as_ref(&self) -> &str {
match self {
Script::Personal(name) | Script::Global(name) => name.as_str(),
}
}
}
impl AsRef<String> for Script {
fn as_ref(&self) -> &String {
match self {
Script::Personal(name) | Script::Global(name) => name,
}
}
}
impl Script {
pub fn into_string(self) -> String {
match self {
Script::Personal(name) | Script::Global(name) => name,
}
}
pub fn as_str(&self) -> &String {
match self {
Script::Personal(name) | Script::Global(name) => name,
}
}
}
impl Display for Script {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str(self.as_str())
}
}
impl From<String> for Script {
fn from(name: String) -> Self {
Script::Personal(name)
}
}
impl From<&str> for Script {
fn from(name: &str) -> Self {
Script::Personal(name.to_string())
}
}
impl<T> Metadata<T> {
pub fn server(annotation: impl Into<T>) -> Self {
Metadata::Server {
annotation: annotation.into(),
}
}
pub fn mailbox(name: impl Into<T>, annotation: impl Into<T>) -> Self {
Metadata::Mailbox {
name: name.into(),
annotation: annotation.into(),
}
}
}
impl From<String> for Metadata<String> {
fn from(annotation: String) -> Self {
Metadata::Server { annotation }
}
}
impl From<&'_ str> for Metadata<String> {
fn from(annotation: &'_ str) -> Self {
Metadata::Server {
annotation: annotation.to_string(),
}
}
}
impl From<(String, String)> for Metadata<String> {
fn from((name, annotation): (String, String)) -> Self {
Metadata::Mailbox { name, annotation }
}
}
impl From<(&'_ str, &'_ str)> for Metadata<String> {
fn from((name, annotation): (&'_ str, &'_ str)) -> Self {
Metadata::Mailbox {
name: name.to_string(),
annotation: annotation.to_string(),
}
}
}

@ -0,0 +1,50 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::{Compiler, Sieve};
const SIEVE_MARKER: u8 = 0xff;
pub enum SerializeError {
Other,
}
impl Sieve {
pub fn deserialize(bytes: &[u8]) -> Result<Self, Box<bincode::ErrorKind>> {
if bytes.len() > 2 && bytes[0] == SIEVE_MARKER && bytes[1] == Compiler::VERSION as u8 {
bincode::deserialize(&bytes[2..])
} else {
Err(Box::new(bincode::ErrorKind::Custom(
"Incompatible version".to_string(),
)))
}
}
pub fn serialize(&self) -> Result<Vec<u8>, Box<bincode::ErrorKind>> {
let mut buf = Vec::with_capacity(bincode::serialized_size(self)? as usize + 2);
buf.push(SIEVE_MARKER);
buf.push(Compiler::VERSION as u8);
bincode::serialize_into(&mut buf, self)?;
Ok(buf)
}
}

@ -0,0 +1,146 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::borrow::Cow;
use crate::sieve::{
compiler::{
grammar::{Comparator, RelationalMatch},
Value,
},
runtime::Variable,
MatchAs,
};
use super::glob::{glob_match, glob_match_capture};
impl Comparator {
pub(crate) fn is(&self, a: &Variable<'_>, b: &Variable<'_>) -> bool {
match self {
Comparator::Octet => a.to_cow() == b.to_cow(),
Comparator::AsciiNumeric => RelationalMatch::Eq.cmp(&a.to_number(), &b.to_number()),
_ => a.to_cow().to_lowercase() == b.to_cow().to_lowercase(),
}
}
pub(crate) fn contains(&self, haystack: &str, needle: &str) -> bool {
needle.is_empty()
|| match self {
Comparator::Octet => haystack.contains(needle),
_ => haystack.to_lowercase().contains(&needle.to_lowercase()),
}
}
pub(crate) fn relational(
&self,
relation: &RelationalMatch,
a: &Variable<'_>,
b: &Variable<'_>,
) -> bool {
match self {
Comparator::Octet => relation.cmp(a.to_cow().as_ref(), b.to_cow().as_ref()),
Comparator::AsciiNumeric => relation.cmp(&a.to_number(), &b.to_number()),
_ => relation.cmp(&a.to_cow().to_lowercase(), &b.to_cow().to_lowercase()),
}
}
pub(crate) fn matches(
&self,
value: &str,
pattern: &str,
capture_positions: u64,
captured_values: &mut Vec<(usize, String)>,
) -> bool {
match self {
Comparator::AsciiCaseMap if capture_positions == 0 => {
glob_match(&value.to_lowercase(), pattern, true)
}
Comparator::AsciiCaseMap => {
glob_match_capture(value, pattern, true, capture_positions, captured_values)
}
_ if capture_positions == 0 => glob_match(value, pattern, false),
_ => glob_match_capture(value, pattern, false, capture_positions, captured_values),
}
}
pub(crate) fn regex(
&self,
pattern: &Value,
pattern_expr: &Variable<'_>,
value: &str,
mut capture_positions: u64,
captured_values: &mut Vec<(usize, String)>,
) -> bool {
let regex = if let Value::Regex(regex) = pattern {
Cow::Borrowed(&regex.regex)
} else {
match fancy_regex::Regex::new(pattern_expr.to_cow().as_ref()) {
Ok(regex) => Cow::Owned(regex),
Err(err) => {
debug_assert!(false, "Failed to compile regex: {err:?}");
return false;
}
}
};
if capture_positions == 0 {
regex.is_match(value).unwrap_or_default()
} else if let Ok(Some(captures)) = regex.captures(value) {
captured_values.clear();
while capture_positions != 0 {
let index = 63 - capture_positions.leading_zeros();
capture_positions ^= 1 << index;
if let Some(match_var) = captures.get(index as usize) {
captured_values.push((index as usize, match_var.as_str().to_string()));
}
}
true
} else {
false
}
}
pub(crate) fn as_match(&self) -> MatchAs {
match self {
Comparator::AsciiCaseMap => MatchAs::Lowercase,
Comparator::AsciiNumeric => MatchAs::Number,
_ => MatchAs::Octet,
}
}
}
impl RelationalMatch {
pub fn cmp<T>(&self, a: &T, b: &T) -> bool
where
T: PartialOrd + ?Sized,
{
match self {
RelationalMatch::Gt => a.gt(b),
RelationalMatch::Ge => a.ge(b),
RelationalMatch::Lt => a.lt(b),
RelationalMatch::Le => a.le(b),
RelationalMatch::Eq => a.eq(b),
RelationalMatch::Ne => a.ne(b),
}
}
}

@ -0,0 +1,313 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::char::REPLACEMENT_CHARACTER;
use crate::sieve::MAX_MATCH_VARIABLES;
#[derive(Debug)]
enum PatternChar {
WildcardMany { num: usize, match_pos: usize },
WildcardSingle { match_pos: usize },
Char { char: char, match_pos: usize },
}
fn compile(str: &str, to_lower: bool) -> Vec<PatternChar> {
let mut chars = Vec::new();
let mut is_escaped = false;
let mut str = str.chars().peekable();
while let Some(char) = str.next() {
match char {
'*' if !is_escaped => {
let mut num = 1;
while let Some('*') = str.peek() {
num += 1;
str.next();
}
chars.push(PatternChar::WildcardMany { num, match_pos: 0 });
}
'?' if !is_escaped => {
chars.push(PatternChar::WildcardSingle { match_pos: 0 });
}
'\\' if !is_escaped => {
is_escaped = true;
continue;
}
_ => {
if is_escaped {
is_escaped = false;
}
if to_lower && char.is_uppercase() {
for char in char.to_lowercase() {
chars.push(PatternChar::Char { char, match_pos: 0 });
}
} else {
chars.push(PatternChar::Char { char, match_pos: 0 });
}
}
}
}
chars
}
// Credits: Algorithm ported from https://research.swtch.com/glob
pub(crate) fn glob_match(value: &str, pattern: &str, to_lower: bool) -> bool {
let pattern = compile(pattern, to_lower);
let value = if to_lower {
value.to_lowercase().chars().collect::<Vec<_>>()
} else {
value.chars().collect::<Vec<_>>()
};
let mut px = 0;
let mut nx = 0;
let mut next_px = 0;
let mut next_nx = 0;
while px < pattern.len() || nx < value.len() {
match pattern.get(px) {
Some(PatternChar::Char { char, .. }) => {
if matches!(value.get(nx), Some(nc) if nc == char ) {
px += 1;
nx += 1;
continue;
}
}
Some(PatternChar::WildcardSingle { .. }) => {
if nx < value.len() {
px += 1;
nx += 1;
continue;
}
}
Some(PatternChar::WildcardMany { .. }) => {
next_px = px;
next_nx = nx + 1;
px += 1;
continue;
}
_ => (),
}
if 0 < next_nx && next_nx <= value.len() {
px = next_px;
nx = next_nx;
continue;
}
return false;
}
true
}
pub(crate) fn glob_match_capture(
value_: &str,
pattern: &str,
to_lower: bool,
capture_positions: u64,
captured_values: &mut Vec<(usize, String)>,
) -> bool {
let mut pattern = compile(pattern, to_lower);
let value = if to_lower {
let mut value = Vec::with_capacity(value_.len());
for char in value_.chars() {
if char.is_uppercase() {
for (pos, lowerchar) in char.to_lowercase().enumerate() {
value.push((
lowerchar,
if pos == 0 {
char
} else {
REPLACEMENT_CHARACTER
},
));
}
} else {
value.push((char, char));
}
}
value
} else {
value_.chars().map(|char| (char, char)).collect::<Vec<_>>()
};
let mut px = 0;
let mut nx = 0;
let mut next_px = 0;
let mut next_nx = 0;
while px < pattern.len() || nx < value.len() {
match pattern.get_mut(px) {
Some(PatternChar::Char { char, match_pos }) => {
if matches!(value.get(nx), Some(nc) if &nc.0 == char ) {
*match_pos = nx;
px += 1;
nx += 1;
continue;
}
}
Some(PatternChar::WildcardSingle { match_pos }) => {
if nx < value.len() {
*match_pos = nx;
px += 1;
nx += 1;
continue;
}
}
Some(PatternChar::WildcardMany { match_pos, .. }) => {
*match_pos = nx;
next_px = px;
next_nx = nx + 1;
px += 1;
continue;
}
_ => (),
}
if 0 < next_nx && next_nx <= value.len() {
px = next_px;
nx = next_nx;
continue;
}
return false;
}
let mut last_pos = 0;
captured_values.clear();
if capture_positions & 1 != 0 {
captured_values.push((0usize, value_.to_string()));
}
let mut wildcard_pos = 1;
for item in pattern {
if wildcard_pos <= MAX_MATCH_VARIABLES {
last_pos = match item {
PatternChar::WildcardMany { mut num, match_pos } => {
while num > 1 {
if capture_positions & (1 << wildcard_pos) != 0 {
captured_values.push((wildcard_pos, String::with_capacity(0)));
}
wildcard_pos += 1;
num -= 1;
}
if capture_positions & (1 << wildcard_pos) != 0 {
if let Some(range) = value.get(last_pos..match_pos) {
captured_values.push((
wildcard_pos,
range
.iter()
.filter_map(|(_, char)| {
if char != &REPLACEMENT_CHARACTER {
Some(char)
} else {
None
}
})
.collect::<String>(),
));
} else {
debug_assert!(false, "Glob pattern failure.");
return false;
}
}
wildcard_pos += 1;
match_pos
}
PatternChar::WildcardSingle { match_pos } => {
if capture_positions & (1 << wildcard_pos) != 0 {
if let Some((char, orig_char)) = value.get(match_pos) {
captured_values.push((
wildcard_pos,
(if orig_char != &REPLACEMENT_CHARACTER {
orig_char
} else {
char
})
.to_string(),
));
} else {
debug_assert!(false, "Glob pattern failure.");
return false;
}
}
wildcard_pos += 1;
match_pos
}
PatternChar::Char { match_pos, .. } => match_pos,
} + 1;
} else {
break;
}
}
true
}
#[cfg(test)]
mod tests {
#[test]
fn glob_match() {
for (value, pattern, expected_result) in [
(
"frop.......frop.........frop....",
"?*frop*",
vec!["f", "rop.......", ".........frop...."],
),
("frop:frup:frop", "*:*:*", vec!["frop", "frup", "frop"]),
(
"a b c d e f g",
"? ? ? ? ? ? ?",
vec!["a", "b", "c", "d", "e", "f", "g"],
),
("puk pok puk pok", "pu*ok", vec!["k pok puk p"]),
("snot kip snot", "snot*snot", vec![" kip "]),
(
"klopfropstroptop",
"*fr??*top",
vec!["klop", "o", "p", "strop"],
),
("toptoptop", "*top", vec!["toptop"]),
(
"Fehlende Straße zur Karte hinzufügen",
"FEHLENDE * ZUR Karte HINZUFÜGEN",
vec!["Straße"],
),
] {
let mut match_values = Vec::new();
assert!(
super::glob_match_capture(value, pattern, true, u64::MAX ^ 1, &mut match_values),
"{value:?} {pattern:?}",
);
assert_eq!(
match_values.into_iter().map(|(_, v)| v).collect::<Vec<_>>(),
expected_result,
"{value:?} {pattern:?}",
);
assert!(
super::glob_match(value, pattern, true),
"{value:?} {pattern:?}",
);
}
}
}

@ -0,0 +1,221 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::slice::Iter;
use mail_parser::{Message, MessagePart, MimeHeaders, PartType};
use crate::sieve::Context;
#[derive(Debug)]
pub(crate) enum ContentTypeFilter {
Type(String),
TypeSubtype((String, String)),
}
pub(crate) struct SubpartIterator<'x> {
ctx: &'x Context<'x>,
iter: Iter<'x, usize>,
iter_stack: Vec<Iter<'x, usize>>,
anychild: bool,
}
impl<'x> SubpartIterator<'x> {
pub(crate) fn new(ctx: &'x Context<'x>, parts: &'x [usize], anychild: bool) -> Self {
SubpartIterator {
ctx,
iter: parts.iter(),
iter_stack: Vec::new(),
anychild,
}
}
#[allow(clippy::should_implement_trait)]
pub fn next(&mut self) -> Option<(usize, &MessagePart<'x>)> {
loop {
if let Some(&part_id) = self.iter.next() {
let subpart = self.ctx.message.parts.get(part_id)?;
match &subpart.body {
PartType::Multipart(subparts) if self.anychild => {
self.iter_stack
.push(std::mem::replace(&mut self.iter, subparts.iter()));
}
_ => (),
}
return Some((part_id, subpart));
}
if let Some(prev_iter) = self.iter_stack.pop() {
self.iter = prev_iter;
} else {
return None;
}
}
}
}
impl<'x> Context<'x> {
pub(crate) fn find_nested_parts<'z: 'x>(
&'z self,
mut message: &'x Message<'x>,
ct_filter: &[ContentTypeFilter],
visitor_fnc: &mut impl FnMut(&MessagePart, &[u8]) -> bool,
) -> bool {
let mut iter_stack = Vec::new();
let mut iter = vec![self.part].into_iter();
loop {
while let Some(part_id) = iter.next() {
if let Some(subpart) = message.parts.get(part_id) {
let process_part = if !ct_filter.is_empty() {
let mut process_part = false;
let (ct, cst) = if let Some(ct) = subpart.content_type() {
(ct.c_type.as_ref(), ct.c_subtype.as_deref().unwrap_or(""))
} else {
match &subpart.body {
PartType::Text(_) => ("text", "plain"),
PartType::Html(_) => ("text", "html"),
PartType::Message(_) => ("message", "rfc822"),
PartType::Multipart(_) => ("multipart", "mixed"),
_ => ("application", "octet-stream"),
}
};
for ctf in ct_filter {
match ctf {
ContentTypeFilter::Type(name) => {
if name.eq_ignore_ascii_case(ct) {
process_part = true;
break;
}
}
ContentTypeFilter::TypeSubtype((name, subname)) => {
if name.eq_ignore_ascii_case(ct)
&& subname.eq_ignore_ascii_case(cst)
{
process_part = true;
break;
}
}
}
}
process_part
} else {
true
};
if process_part && visitor_fnc(subpart, message.raw_message.as_ref()) {
return true;
}
match &subpart.body {
PartType::Multipart(subparts) => {
iter_stack.push((
std::mem::replace(&mut iter, subparts.clone().into_iter()),
None,
));
}
PartType::Message(next_message) => {
iter_stack.push((
std::mem::replace(&mut iter, vec![0].into_iter()),
Some(message),
));
message = next_message;
}
_ => (),
}
}
}
if let Some((prev_iter, prev_message)) = iter_stack.pop() {
iter = prev_iter;
if let Some(prev_message) = prev_message {
message = prev_message;
}
} else {
break;
}
}
false
}
pub(crate) fn find_nested_parts_ids(&self, include_current: bool) -> Vec<usize> {
if self.part == 0 {
if include_current {
(0..self.message.parts.len()).collect()
} else if self.message.parts.len() > 1 {
(1..self.message.parts.len()).collect()
} else {
Vec::new()
}
} else {
let mut part_ids = Vec::new();
let mut iter_stack = Vec::new();
if include_current {
part_ids.push(self.part);
}
if let Some(PartType::Multipart(subparts)) =
self.message.parts.get(self.part).map(|p| &p.body)
{
let mut iter = subparts.iter();
loop {
while let Some(&part_id) = iter.next() {
part_ids.push(part_id);
if let Some(PartType::Multipart(subparts)) =
self.message.parts.get(part_id).map(|p| &p.body)
{
iter_stack.push(std::mem::replace(&mut iter, subparts.iter()));
}
}
if let Some(prev_iter) = iter_stack.pop() {
iter = prev_iter;
} else {
break;
}
}
}
part_ids
}
}
}
impl ContentTypeFilter {
pub(crate) fn parse(ct: &str) -> Option<ContentTypeFilter> {
let mut iter = ct.split('/');
let name = iter.next()?;
if let Some(sub_name) = iter.next() {
if !name.is_empty() && !sub_name.is_empty() && iter.next().is_none() {
Some(ContentTypeFilter::TypeSubtype((
name.to_string(),
sub_name.to_string(),
)))
} else {
None
}
} else if !name.is_empty() {
Some(ContentTypeFilter::Type(name.to_string()))
} else {
None
}
}
}

@ -0,0 +1,136 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::{
compiler::grammar::{test::Test, Capability},
Context, Event, Mailbox,
};
use super::RuntimeError;
pub mod comparator;
pub mod glob;
pub mod mime;
pub mod test_address;
pub mod test_body;
pub mod test_date;
pub mod test_duplicate;
pub mod test_envelope;
pub mod test_exists;
pub mod test_extlists;
pub mod test_hasflag;
pub mod test_header;
pub mod test_metadata;
pub mod test_notify;
pub mod test_size;
pub mod test_spamtest;
pub mod test_string;
pub(crate) enum TestResult {
Bool(bool),
Event { event: Event, is_not: bool },
Error(RuntimeError),
}
impl Test {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
match &self {
Test::Header(test) => test.exec(ctx),
Test::Address(test) => test.exec(ctx),
Test::Envelope(test) => test.exec(ctx),
Test::Exists(test) => test.exec(ctx),
Test::Size(test) => test.exec(ctx),
Test::Body(test) => test.exec(ctx),
Test::String(test) => test.exec(ctx, false),
Test::EvalExpression(expr) => TestResult::Bool(
ctx.eval_expression(&expr.expr)
.and_then(|v| v.to_number_checked())
.unwrap_or_default()
.is_non_zero()
^ expr.is_not,
),
Test::HasFlag(test) => test.exec(ctx),
Test::Date(test) => test.exec(ctx),
Test::CurrentDate(test) => test.exec(ctx),
Test::Duplicate(test) => test.exec(ctx),
Test::NotifyMethodCapability(test) => test.exec(ctx),
Test::ValidNotifyMethod(test) => test.exec(ctx),
Test::Environment(test) => test.exec(ctx, true),
Test::ValidExtList(test) => test.exec(ctx),
Test::Ihave(test) => TestResult::Bool(
test.capabilities.iter().all(|c| {
![Capability::Variables, Capability::EncodedCharacter].contains(c)
&& ctx.runtime.allowed_capabilities.contains(c)
}) ^ test.is_not,
),
Test::MailboxExists(test) => TestResult::Event {
event: Event::MailboxExists {
mailboxes: test
.mailbox_names
.iter()
.map(|m| Mailbox::Name(ctx.eval_value(m).into_string()))
.collect(),
special_use: Vec::new(),
},
is_not: test.is_not,
},
Test::Vacation(test) => test.exec(ctx),
Test::Metadata(test) => test.exec(ctx),
Test::MetadataExists(test) => test.exec(ctx),
Test::MailboxIdExists(test) => TestResult::Event {
event: Event::MailboxExists {
mailboxes: test
.mailbox_ids
.iter()
.map(|m| Mailbox::Id(ctx.eval_value(m).into_string()))
.collect(),
special_use: Vec::new(),
},
is_not: test.is_not,
},
Test::SpamTest(test) => test.exec(ctx),
Test::VirusTest(test) => test.exec(ctx),
Test::SpecialUseExists(test) => TestResult::Event {
event: Event::MailboxExists {
mailboxes: if let Some(mailbox) = &test.mailbox {
vec![Mailbox::Name(ctx.eval_value(mailbox).into_string())]
} else {
Vec::new()
},
special_use: ctx.eval_values_owned(&test.attributes),
},
is_not: test.is_not,
},
Test::Convert(test) => test.exec(ctx),
Test::Plugin(test) => TestResult::Event {
event: ctx.eval_plugin_arguments(test),
is_not: test.is_not,
},
Test::True => TestResult::Bool(true),
Test::False => TestResult::Bool(false),
Test::Invalid(invalid) => {
TestResult::Error(RuntimeError::InvalidInstruction(invalid.clone()))
}
}
}
}

@ -0,0 +1,300 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use mail_parser::{
parsers::{
fields::address::{
parse_address_detail_part, parse_address_domain, parse_address_local_part,
parse_address_user_part,
},
MessageStream,
},
Addr, Address, Header, HeaderValue,
};
use crate::sieve::{
compiler::{
grammar::{tests::test_address::TestAddress, AddressPart, MatchType},
Number,
},
runtime::Variable,
Context, Event,
};
use super::TestResult;
impl TestAddress {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let key_list = ctx.eval_values(&self.key_list);
let header_list = ctx.parse_header_names(&self.header_list);
let result = match &self.match_type {
MatchType::Is | MatchType::Contains => {
let is_is = matches!(&self.match_type, MatchType::Is);
ctx.find_headers(
&header_list,
self.index,
self.mime_anychild,
|header, _, _| {
ctx.find_addresses(header, &self.address_part, |value| {
for key in &key_list {
if is_is {
if self.comparator.is(&Variable::from(value), key) {
return true;
}
} else if self.comparator.contains(value, key.to_cow().as_ref()) {
return true;
}
}
false
})
},
)
}
MatchType::Value(rel_match) => ctx.find_headers(
&header_list,
self.index,
self.mime_anychild,
|header, _, _| {
ctx.find_addresses(header, &self.address_part, |value| {
for key in &key_list {
if self
.comparator
.relational(rel_match, &Variable::from(value), key)
{
return true;
}
}
false
})
},
),
MatchType::Matches(capture_positions) | MatchType::Regex(capture_positions) => {
let mut captured_positions = Vec::new();
let is_matches = matches!(&self.match_type, MatchType::Matches(_));
let result = ctx.find_headers(
&header_list,
self.index,
self.mime_anychild,
|header, _, _| {
ctx.find_addresses(header, &self.address_part, |value| {
for (pattern_expr, pattern) in key_list.iter().zip(self.key_list.iter())
{
if is_matches {
if self.comparator.matches(
value,
pattern_expr.to_cow().as_ref(),
*capture_positions,
&mut captured_positions,
) {
return true;
}
} else if self.comparator.regex(
pattern,
pattern_expr,
value,
*capture_positions,
&mut captured_positions,
) {
return true;
}
}
false
})
},
);
if !captured_positions.is_empty() {
ctx.set_match_variables(captured_positions);
}
result
}
MatchType::Count(rel_match) => {
let mut count: i64 = 0;
ctx.find_headers(
&header_list,
self.index,
self.mime_anychild,
|header, _, _| {
ctx.find_addresses(header, &self.address_part, |value| {
if !value.is_empty() {
count += 1;
}
false
})
},
);
let mut result = false;
for key in &key_list {
if rel_match.cmp(&Number::from(count), &key.to_number()) {
result = true;
break;
}
}
result
}
MatchType::List => {
let mut values: Vec<String> = Vec::new();
ctx.find_headers(
&header_list,
self.index,
self.mime_anychild,
|header, _, _| {
ctx.find_addresses(header, &self.address_part, |value| {
if !value.is_empty() && !values.iter().any(|v| v.eq(value)) {
values.push(value.to_string());
}
false
})
},
);
if !values.is_empty() {
return TestResult::Event {
event: Event::ListContains {
lists: ctx.eval_values_owned(&self.key_list),
values,
match_as: self.comparator.as_match(),
},
is_not: self.is_not,
};
}
false
}
};
TestResult::Bool(result ^ self.is_not)
}
}
impl<'x> Context<'x> {
#[allow(unused_assignments)]
pub(crate) fn find_addresses(
&self,
header: &Header,
part: &AddressPart,
mut visitor_fnc: impl FnMut(&str) -> bool,
) -> bool {
match &header.value {
HeaderValue::Address(Address::List(addr_list)) => {
for addr in addr_list {
if let Some(addr) = part.eval(addr) {
if visitor_fnc(addr) {
return true;
}
}
}
false
}
HeaderValue::Address(Address::Group(group_list)) => {
for group in group_list {
for addr in &group.addresses {
if let Some(addr) = part.eval(addr) {
if visitor_fnc(addr) {
return true;
}
}
}
}
false
}
_ => {
let mut raw_header = None;
let bytes = if header.offset_end > 0 {
self.message
.raw_message
.get(header.offset_start..header.offset_end)
.unwrap_or(b"")
} else if let HeaderValue::Text(text) = &header.value {
// Inserted header
raw_header = format!("{text}\n").into_bytes().into();
raw_header.as_deref().unwrap()
} else {
b""
};
match MessageStream::new(bytes).parse_address() {
HeaderValue::Address(Address::List(addr_list)) => {
for addr in &addr_list {
if let Some(addr) = part.eval(addr) {
if visitor_fnc(addr) {
return true;
}
}
}
false
}
HeaderValue::Address(Address::Group(group_list)) => {
for group in group_list {
for addr in &group.addresses {
if let Some(addr) = part.eval(addr) {
if visitor_fnc(addr) {
return true;
}
}
}
}
false
}
_ => visitor_fnc(""),
}
}
}
}
}
impl AddressPart {
pub(crate) fn eval<'x>(&self, addr: &'x Addr<'x>) -> Option<&'x str> {
let email = addr.address.as_deref().or(addr.name.as_deref());
match (self, email) {
(AddressPart::All, _) => email,
(AddressPart::LocalPart, Some(email)) if !email.is_empty() => {
parse_address_local_part(email)
}
(AddressPart::Domain, Some(email)) if !email.is_empty() => parse_address_domain(email),
(AddressPart::User, Some(email)) if !email.is_empty() => parse_address_user_part(email),
(AddressPart::Detail, Some(email)) if !email.is_empty() => {
parse_address_detail_part(email)
}
(AddressPart::Name, _) => addr.name.as_deref(),
_ => email,
}
}
pub(crate) fn eval_string<'x>(&self, addr: &'x str) -> Option<&'x str> {
if !addr.is_empty() {
match self {
AddressPart::All => addr.into(),
AddressPart::LocalPart => parse_address_local_part(addr),
AddressPart::Domain => parse_address_domain(addr),
AddressPart::User => parse_address_user_part(addr),
AddressPart::Detail => parse_address_detail_part(addr),
_ => addr.into(),
}
} else {
addr.into()
}
}
}

@ -0,0 +1,229 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use mail_parser::{decoders::html::html_to_text, MimeHeaders, PartType};
use crate::sieve::{
compiler::{
grammar::{
tests::test_body::{BodyTransform, TestBody},
MatchType,
},
Number,
},
runtime::Variable,
Context,
};
use super::{mime::ContentTypeFilter, TestResult};
impl TestBody {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
// Check Subject (not a Sieve standard)
let key_list = ctx.eval_values(&self.key_list);
if self.include_subject {
let subject = if !matches!(&self.body_transform, BodyTransform::Raw) {
ctx.message.subject().unwrap_or_default()
} else {
ctx.message.header_raw("Subject").unwrap_or_default()
};
for (key, pattern) in key_list.iter().zip(self.key_list.iter()) {
let result = match &self.match_type {
MatchType::Is => self.comparator.is(&Variable::from(subject), key),
MatchType::Contains => self.comparator.contains(subject, key.to_cow().as_ref()),
MatchType::Value(rel_match) => {
self.comparator
.relational(rel_match, &Variable::from(subject), key)
}
MatchType::Matches(_) => {
self.comparator
.matches(subject, key.to_cow().as_ref(), 0, &mut Vec::new())
}
MatchType::Regex(_) => {
self.comparator
.regex(pattern, key, subject, 0, &mut Vec::new())
}
_ => break,
};
if result {
return TestResult::Bool(result ^ self.is_not);
}
}
}
let ct_filter = match &self.body_transform {
BodyTransform::Text | BodyTransform::Raw => Vec::new(),
BodyTransform::Content(values) => {
let mut ct_filter = Vec::with_capacity(values.len());
for ct in values {
let ct = ctx.eval_value(ct);
if ct.is_empty() {
break;
} else if let Some(ctf) = ContentTypeFilter::parse(ct.into_cow().as_ref()) {
ct_filter.push(ctf);
} else {
return TestResult::Bool(false ^ self.is_not);
}
}
ct_filter
}
};
let result = if let MatchType::Count(rel_match) = &self.match_type {
let mut count = 0;
let mut result = false;
ctx.find_nested_parts(&ctx.message, &ct_filter, &mut |_part, _raw_message| {
count += 1;
false
});
for key in &self.key_list {
if rel_match.cmp(&Number::from(count), &ctx.eval_value(key).to_number()) {
result = true;
break;
}
}
result
} else {
ctx.find_nested_parts(&ctx.message, &ct_filter, &mut |part, raw_message| {
let text = match (&self.body_transform, &part.body) {
(BodyTransform::Content(_), PartType::Message(message)) => {
if let Some(part) = message.parts.get(0) {
String::from_utf8_lossy(
raw_message
.get(part.raw_header_offset()..part.raw_body_offset())
.unwrap_or(b""),
)
} else {
return false;
}
}
(BodyTransform::Content(_), PartType::Multipart(_)) => {
if let Some(boundary) =
part.content_type().and_then(|ct| ct.attribute("boundary"))
{
let mime_body = std::str::from_utf8(
raw_message
.get(part.raw_body_offset()..part.raw_end_offset())
.unwrap_or(b""),
)
.unwrap_or("");
let mut mime_part = String::with_capacity(64);
if let Some((prologue, epilogue)) =
mime_body.split_once(&format!("\n--{boundary}"))
{
mime_part.push_str(prologue);
if let Some((_, epilogue)) =
epilogue.rsplit_once(&format!("\n--{boundary}--"))
{
mime_part.push_str(epilogue);
}
}
mime_part.into()
} else {
String::from_utf8_lossy(
raw_message
.get(part.raw_body_offset()..part.raw_end_offset())
.unwrap_or(b""),
)
}
}
(BodyTransform::Raw, _) => {
match &part.body {
PartType::Text(text) if part.raw_body_offset() == 0 => {
// Inserted part
text.as_ref().into()
}
_ if part.raw_end_offset() > part.raw_body_offset() => {
String::from_utf8_lossy(
raw_message
.get(part.raw_body_offset()..part.raw_end_offset())
.unwrap_or(b""),
)
}
_ => return false,
}
}
(_, PartType::Text(text))
| (BodyTransform::Content(_), PartType::Html(text)) => text.as_ref().into(),
(_, PartType::Html(html)) => html_to_text(html.as_ref()).into(),
(
BodyTransform::Text,
PartType::Binary(bytes) | PartType::InlineBinary(bytes),
) if part.content_type().map_or(false, |ct| {
ct.c_type.eq_ignore_ascii_case("application")
&& ct.c_subtype.as_ref().map_or(false, |st| st.contains("xml"))
}) =>
{
html_to_text(std::str::from_utf8(bytes.as_ref()).unwrap_or("")).into()
}
(
BodyTransform::Content(_),
PartType::Binary(bytes) | PartType::InlineBinary(bytes),
) => String::from_utf8_lossy(bytes.as_ref()),
_ => {
return false;
}
};
let mut result = false;
for (key, pattern) in key_list.iter().zip(self.key_list.iter()) {
result = match &self.match_type {
MatchType::Is => self.comparator.is(&Variable::from(text.as_ref()), key),
MatchType::Contains => self
.comparator
.contains(text.as_ref(), key.to_cow().as_ref()),
MatchType::Value(rel_match) => self.comparator.relational(
rel_match,
&Variable::from(text.as_ref()),
key,
),
MatchType::Matches(_) => self.comparator.matches(
text.as_ref(),
key.to_cow().as_ref(),
0,
&mut Vec::new(),
),
MatchType::Regex(_) => {
self.comparator
.regex(pattern, key, text.as_ref(), 0, &mut Vec::new())
}
_ => false,
};
if result {
break;
}
}
result
})
};
TestResult::Bool(result ^ self.is_not)
}
}

@ -0,0 +1,313 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::borrow::Cow;
use mail_parser::{parsers::MessageStream, DateTime, Header, HeaderValue};
use crate::sieve::{
compiler::{
grammar::{
tests::test_date::{DatePart, TestCurrentDate, TestDate, Zone},
MatchType,
},
Number,
},
runtime::Variable,
Context, Event,
};
use super::TestResult;
impl TestDate {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let header_name = if let Some(header_name) = ctx.parse_header_name(&self.header_name) {
header_name
} else {
return TestResult::Bool(false ^ self.is_not);
};
let result = match &self.match_type {
MatchType::Count(rel_match) => {
let mut date_count = 0;
ctx.find_headers(
&[header_name],
self.index,
self.mime_anychild,
|header, _, _| {
if ctx.find_dates(header).is_some() {
date_count += 1;
}
false
},
);
let mut result = false;
for key in &self.key_list {
if rel_match.cmp(&Number::from(date_count), &ctx.eval_value(key).to_number()) {
result = true;
break;
}
}
result
}
MatchType::List => {
let mut values = Vec::new();
ctx.find_headers(
&[header_name],
self.index,
self.mime_anychild,
|header, _, _| {
if let Some(dt) = ctx.find_dates(header) {
let value = self.date_part.eval(self.zone.eval(dt.as_ref()).as_ref());
if !value.is_empty() && !values.iter().any(|v: &String| v.eq(&value)) {
values.push(value);
}
}
false
},
);
if !values.is_empty() {
return TestResult::Event {
event: Event::ListContains {
lists: ctx.eval_values_owned(&self.key_list),
values,
match_as: self.comparator.as_match(),
},
is_not: self.is_not,
};
}
false
}
_ => {
let key_list = ctx.eval_values(&self.key_list);
let mut captured_values = Vec::new();
let result = ctx.find_headers(
&[header_name],
self.index,
self.mime_anychild,
|header, _, _| {
if let Some(dt) = ctx.find_dates(header) {
let date_part =
self.date_part.eval(self.zone.eval(dt.as_ref()).as_ref());
for key in &key_list {
if match &self.match_type {
MatchType::Is => {
self.comparator.is(&Variable::from(&date_part), key)
}
MatchType::Contains => {
self.comparator.contains(&date_part, key.to_cow().as_ref())
}
MatchType::Value(rel_match) => self.comparator.relational(
rel_match,
&Variable::from(&date_part),
key,
),
MatchType::Matches(capture_positions) => {
self.comparator.matches(
&date_part,
key.to_cow().as_ref(),
*capture_positions,
&mut captured_values,
)
}
MatchType::Regex(capture_positions) => self.comparator.matches(
&date_part,
key.to_cow().as_ref(),
*capture_positions,
&mut captured_values,
),
MatchType::Count(_) | MatchType::List => false,
} {
return true;
}
}
}
false
},
);
if !captured_values.is_empty() {
ctx.set_match_variables(captured_values);
}
result
}
};
TestResult::Bool(result ^ self.is_not)
}
}
impl TestCurrentDate {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let mut result = false;
match &self.match_type {
MatchType::Count(rel_match) => {
for key in &self.key_list {
if rel_match.cmp(&Number::from(1.0), &ctx.eval_value(key).to_number()) {
result = true;
break;
}
}
}
MatchType::List => {
let value = self.date_part.eval(
&(if let Some(zone) = self.zone {
DateTime::from_timestamp(ctx.current_time).to_timezone(zone)
} else {
DateTime::from_timestamp(ctx.current_time)
}),
);
if !value.is_empty() {
return TestResult::Event {
event: Event::ListContains {
lists: ctx.eval_values_owned(&self.key_list),
values: vec![value],
match_as: self.comparator.as_match(),
},
is_not: self.is_not,
};
}
}
_ => {
let mut captured_values = Vec::new();
let date_part = self.date_part.eval(
&(if let Some(zone) = self.zone {
DateTime::from_timestamp(ctx.current_time).to_timezone(zone)
} else {
DateTime::from_timestamp(ctx.current_time)
}),
);
for key in &self.key_list {
let key = ctx.eval_value(key);
if match &self.match_type {
MatchType::Is => self.comparator.is(&Variable::from(&date_part), &key),
MatchType::Contains => self
.comparator
.contains(&date_part, key.into_cow().as_ref()),
MatchType::Value(rel_match) => {
self.comparator
.relational(rel_match, &Variable::from(&date_part), &key)
}
MatchType::Matches(capture_positions) => self.comparator.matches(
&date_part,
key.into_cow().as_ref(),
*capture_positions,
&mut captured_values,
),
MatchType::Regex(capture_positions) => self.comparator.matches(
&date_part,
key.into_cow().as_ref(),
*capture_positions,
&mut captured_values,
),
MatchType::Count(_) | MatchType::List => false,
} {
result = true;
break;
}
}
if !captured_values.is_empty() {
ctx.set_match_variables(captured_values);
}
}
}
TestResult::Bool(result ^ self.is_not)
}
}
impl<'x> Context<'x> {
#[allow(unused_assignments)]
pub(crate) fn find_dates(&self, header: &'x Header) -> Option<Cow<'x, DateTime>> {
if let HeaderValue::DateTime(dt) = &header.value {
if dt.is_valid() {
return Some(Cow::Borrowed(dt));
}
} else if header.offset_end > 0 {
let bytes = self
.message
.raw_message
.get(header.offset_start..header.offset_end)?;
if let HeaderValue::DateTime(dt) = MessageStream::new(bytes).parse_date() {
if dt.is_valid() {
return Some(Cow::Owned(dt));
}
}
} else if let HeaderValue::Text(text) = &header.value {
// Inserted header
let bytes = format!("{text}\n").into_bytes();
if let HeaderValue::DateTime(dt) = MessageStream::new(&bytes).parse_date() {
if dt.is_valid() {
return Some(Cow::Owned(dt));
}
}
}
None
}
}
impl DatePart {
fn eval(&self, dt: &DateTime) -> String {
match self {
DatePart::Year => format!("{:04}", dt.year),
DatePart::Month => format!("{:02}", dt.month),
DatePart::Day => format!("{:02}", dt.day),
DatePart::Date => format!("{:04}-{:02}-{:02}", dt.year, dt.month, dt.day,),
DatePart::Julian => ((dt.julian_day() as f64 - 2400000.5) as i64).to_string(),
DatePart::Hour => format!("{:02}", dt.hour),
DatePart::Minute => format!("{:02}", dt.minute),
DatePart::Second => format!("{:02}", dt.second),
DatePart::Time => format!("{:02}:{:02}:{:02}", dt.hour, dt.minute, dt.second,),
DatePart::Iso8601 => dt.to_rfc3339(),
DatePart::Std11 => dt.to_rfc822(),
DatePart::Zone => format!(
"{}{:02}{:02}",
if dt.tz_before_gmt && (dt.tz_hour > 0 || dt.tz_minute > 0) {
"-"
} else {
"+"
},
dt.tz_hour,
dt.tz_minute
),
DatePart::Weekday => dt.day_of_week().to_string(),
}
}
}
impl Zone {
pub(crate) fn eval<'x>(&self, dt: &'x DateTime) -> Cow<'x, DateTime> {
match self {
Zone::Time(tz) => Cow::Owned(dt.to_timezone(*tz)),
Zone::Original => Cow::Borrowed(dt),
Zone::Local => Cow::Owned(DateTime::from_timestamp(dt.to_timestamp())),
}
}
}

@ -0,0 +1,88 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use mail_parser::{parsers::MessageStream, HeaderValue};
use crate::sieve::{
compiler::grammar::tests::test_duplicate::{DupMatch, TestDuplicate},
Context, Event,
};
use super::TestResult;
impl TestDuplicate {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let id = match &self.dup_match {
DupMatch::Header(header_name) => {
let mut value = String::new();
if let Some(header_name) = ctx.parse_header_name(header_name) {
ctx.find_headers(&[header_name], None, true, |header, _, _| {
if header.offset_end > 0 {
if let Some(bytes) = ctx
.message
.raw_message
.get(header.offset_start..header.offset_end)
{
if let HeaderValue::Text(id) = MessageStream::new(bytes).parse_id()
{
if !id.is_empty() {
value = id.to_string();
return true;
}
}
}
} else if let HeaderValue::Text(text) = &header.value {
// Inserted header
let bytes = format!("{text}\n").into_bytes();
if let HeaderValue::Text(id) = MessageStream::new(&bytes).parse_id() {
if !id.is_empty() {
value = id.to_string();
return true;
}
}
}
false
});
}
value.into()
}
DupMatch::UniqueId(s) => ctx.eval_value(s).into_cow(),
DupMatch::Default => ctx.message.message_id().unwrap_or("").into(),
};
TestResult::Event {
event: Event::DuplicateId {
id: if id.is_empty() {
return TestResult::Bool(false ^ self.is_not);
} else if let Some(handle) = &self.handle {
format!("{}{}", ctx.eval_value(handle).into_cow(), id)
} else {
id.into_owned()
},
expiry: self.seconds.unwrap_or(ctx.runtime.default_duplicate_expiry),
last: self.last,
},
is_not: self.is_not,
}
}
}

@ -0,0 +1,279 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use mail_parser::DateTime;
use crate::sieve::{
compiler::{
grammar::{tests::test_envelope::TestEnvelope, MatchType},
Number,
},
runtime::Variable,
Context, Envelope, Event,
};
use super::TestResult;
impl TestEnvelope {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let key_list = ctx.eval_values(&self.key_list);
let result = match &self.match_type {
MatchType::Is | MatchType::Contains => {
let is_is = matches!(&self.match_type, MatchType::Is);
ctx.find_envelopes(self, |value| {
for key in &key_list {
if is_is {
if self.comparator.is(&Variable::from(value), key) {
return true;
}
} else if self.comparator.contains(value, key.to_cow().as_ref()) {
return true;
}
}
false
})
}
MatchType::Value(rel_match) => ctx.find_envelopes(self, |value| {
for key in &key_list {
if self
.comparator
.relational(rel_match, &Variable::from(value), key)
{
return true;
}
}
false
}),
MatchType::Matches(capture_positions) | MatchType::Regex(capture_positions) => {
let mut captured_positions = Vec::new();
let is_matches = matches!(&self.match_type, MatchType::Matches(_));
let result = ctx.find_envelopes(self, |value| {
for (pattern_expr, pattern) in key_list.iter().zip(self.key_list.iter()) {
if is_matches {
if self.comparator.matches(
value,
pattern_expr.to_cow().as_ref(),
*capture_positions,
&mut captured_positions,
) {
return true;
}
} else if self.comparator.regex(
pattern,
pattern_expr,
value,
*capture_positions,
&mut captured_positions,
) {
return true;
}
}
false
});
if !captured_positions.is_empty() {
ctx.set_match_variables(captured_positions);
}
result
}
MatchType::Count(rel_match) => {
let mut count = 0;
ctx.find_envelopes(self, |value| {
if !value.is_empty() {
count += 1;
}
false
});
let mut result = false;
for key in &key_list {
if rel_match.cmp(&Number::from(count), &key.to_number()) {
result = true;
break;
}
}
result
}
MatchType::List => {
let mut values: Vec<String> = Vec::new();
ctx.find_envelopes(self, |value| {
if !value.is_empty() && !values.iter().any(|v| v.eq(value)) {
values.push(value.to_string());
}
false
});
if !values.is_empty() {
return TestResult::Event {
event: Event::ListContains {
lists: ctx.eval_values_owned(&self.key_list),
values,
match_as: self.comparator.as_match(),
},
is_not: self.is_not,
};
}
false
}
};
TestResult::Bool(result ^ self.is_not)
}
}
impl<'x> Context<'x> {
fn find_envelopes(
&self,
test_envelope: &TestEnvelope,
mut cb: impl FnMut(&str) -> bool,
) -> bool {
for (name, value) in &self.envelope {
if test_envelope.envelope_list.contains(name)
&& match name {
Envelope::From | Envelope::To | Envelope::Orcpt => {
if let Some(value) = test_envelope
.address_part
.eval_string(value.to_cow().as_ref())
{
cb(value)
} else {
false
}
}
Envelope::ByTimeAbsolute if test_envelope.zone.is_some() => {
if let Some(dt) = DateTime::parse_rfc3339(value.to_cow().as_ref()) {
cb(&dt.to_timezone(test_envelope.zone.unwrap()).to_rfc3339())
} else {
cb("")
}
}
_ => cb(value.to_cow().as_ref()),
}
{
return true;
}
}
false
}
}
pub fn parse_envelope_address(addr: &str) -> Option<&str> {
let addr = addr.as_bytes();
let mut addr_start_pos = 0;
let mut addr_end_pos = addr.len();
let mut last_ch = 0;
let mut at_pos = 0;
let mut has_bracket = false;
let mut in_path = false;
if addr.is_empty() {
return "".into();
}
for (pos, &ch) in addr.iter().enumerate() {
match ch {
b'<' => {
if pos == 0 {
addr_start_pos = pos + 1;
has_bracket = true;
} else {
return None;
}
}
b'>' => {
if has_bracket && pos == addr.len() - 1 {
if addr.len() > 2 {
has_bracket = false;
addr_end_pos = pos;
} else {
// <>
return "".into();
}
} else {
return None;
}
}
b':' => {
if at_pos != 0 {
at_pos = 0;
addr_start_pos = pos + 1;
in_path = false;
} else {
return None;
}
}
b',' => {
if at_pos != 0 {
at_pos = 0;
in_path = true;
} else {
return None;
}
}
b'@' => {
if at_pos == 0 && pos != addr.len() - 1 {
at_pos = pos;
} else {
return None;
}
}
b'.' => {
if (at_pos != 0 && last_ch == b'.') || last_ch == b'@' {
return None;
}
}
_ => {
if ch.is_ascii_whitespace() || !ch.is_ascii() {
return None;
}
}
}
last_ch = ch;
}
if !has_bracket && !in_path && at_pos > addr_start_pos && addr_end_pos - 1 > at_pos {
std::str::from_utf8(&addr[addr_start_pos..addr_end_pos])
.unwrap()
.into()
} else {
match addr.get(addr_start_pos..addr_end_pos) {
Some(addr) if at_pos == 0 && addr.eq_ignore_ascii_case(b"mailer-daemon") => {
std::str::from_utf8(addr).unwrap().into()
}
_ => None,
}
}
}

@ -0,0 +1,53 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::{compiler::grammar::tests::test_exists::TestExists, Context};
use super::{mime::SubpartIterator, TestResult};
impl TestExists {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let header_names = ctx.parse_header_names(&self.header_names);
let mut header_exists = vec![false; header_names.len()];
let parts = [ctx.part];
let mut part_iter = SubpartIterator::new(ctx, &parts, self.mime_anychild);
let mut result = false;
while let Some((_, message_part)) = part_iter.next() {
for (pos, header_name) in header_names.iter().enumerate() {
if !header_exists[pos]
&& message_part.headers.iter().any(|h| &h.name == header_name)
{
header_exists[pos] = true;
}
}
if header_exists.iter().all(|v| *v) {
result = true;
break;
}
}
TestResult::Bool(result ^ self.is_not)
}
}

@ -0,0 +1,44 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::{compiler::grammar::tests::test_extlists::TestValidExtList, Context};
use super::TestResult;
impl TestValidExtList {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let mut num_valid = 0;
for list in &self.list_names {
if ctx
.runtime
.valid_ext_lists
.contains(&ctx.eval_value(list).into_cow())
{
num_valid += 1;
}
}
TestResult::Bool((num_valid == self.list_names.len()) ^ self.is_not)
}
}

@ -0,0 +1,118 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::{
compiler::{
grammar::{tests::test_hasflag::TestHasFlag, MatchType},
Number, VariableType,
},
runtime::Variable,
Context,
};
use super::TestResult;
impl TestHasFlag {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let mut variable_list_ = None;
let variable_list = if !self.variable_list.is_empty() {
&self.variable_list
} else {
variable_list_.get_or_insert_with(|| vec![VariableType::Global("__flags".to_string())])
};
let result = if let MatchType::Count(rel_match) = &self.match_type {
let mut flag_count = 0;
for variable in variable_list {
match ctx.get_variable(variable) {
Some(flags) if !flags.is_empty() => {
flag_count += flags.to_cow().split(' ').count();
}
_ => (),
}
}
let mut result = false;
for key in &self.flags {
if rel_match.cmp(
&Number::from(flag_count as i64),
&ctx.eval_value(key).to_number(),
) {
result = true;
break;
}
}
result
} else {
let mut captured_values = Vec::new();
let result = ctx.tokenize_flags(&self.flags, |check_flag| {
for variable in variable_list {
match ctx.get_variable(variable) {
Some(flags) if !flags.is_empty() => {
for flag in flags.to_cow().split(' ') {
if match &self.match_type {
MatchType::Is => self
.comparator
.is(&Variable::from(flag), &Variable::from(check_flag)),
MatchType::Contains => {
self.comparator.contains(flag, check_flag)
}
MatchType::Value(rel_match) => self.comparator.relational(
rel_match,
&Variable::from(flag),
&Variable::from(check_flag),
),
MatchType::Matches(capture_positions) => {
self.comparator.matches(
flag,
check_flag,
*capture_positions,
&mut captured_values,
)
}
MatchType::Regex(capture_positions) => self.comparator.matches(
flag,
check_flag,
*capture_positions,
&mut captured_values,
),
MatchType::Count(_) | MatchType::List => false,
} {
return true;
}
}
}
_ => (),
}
}
false
});
if !captured_values.is_empty() {
ctx.set_match_variables(captured_values);
}
result
};
TestResult::Bool(result ^ self.is_not)
}
}

@ -0,0 +1,379 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use mail_parser::{parsers::MessageStream, Header, HeaderName, HeaderValue};
use crate::sieve::{
compiler::{
grammar::{actions::action_mime::MimeOpts, tests::test_header::TestHeader, MatchType},
Number, Value,
},
runtime::Variable,
Context, Event,
};
use super::{mime::SubpartIterator, TestResult};
impl TestHeader {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let key_list = ctx.eval_values(&self.key_list);
let header_list = ctx.parse_header_names(&self.header_list);
let mime_opts = match &self.mime_opts {
MimeOpts::Type => MimeOpts::Type,
MimeOpts::Subtype => MimeOpts::Subtype,
MimeOpts::ContentType => MimeOpts::ContentType,
MimeOpts::Param(params) => MimeOpts::Param(ctx.eval_values(params)),
MimeOpts::None => MimeOpts::None,
};
let result = match &self.match_type {
MatchType::Is | MatchType::Contains => {
let is_is = matches!(&self.match_type, MatchType::Is);
ctx.find_headers(
&header_list,
self.index,
self.mime_anychild,
|header, _, _| {
ctx.find_header_values(header, &mime_opts, |value| {
for key in &key_list {
if is_is {
if self.comparator.is(&Variable::from(value), key) {
return true;
}
} else if self.comparator.contains(value, key.to_cow().as_ref()) {
return true;
}
}
false
})
},
)
}
MatchType::Value(rel_match) => ctx.find_headers(
&header_list,
self.index,
self.mime_anychild,
|header, _, _| {
ctx.find_header_values(header, &mime_opts, |value| {
for key in &key_list {
if self
.comparator
.relational(rel_match, &Variable::from(value), key)
{
return true;
}
}
false
})
},
),
MatchType::Matches(capture_positions) | MatchType::Regex(capture_positions) => {
let mut captured_values = Vec::new();
let is_matches = matches!(&self.match_type, MatchType::Matches(_));
let result = ctx.find_headers(
&header_list,
self.index,
self.mime_anychild,
|header, _, _| {
ctx.find_header_values(header, &mime_opts, |value| {
for (pattern_expr, pattern) in key_list.iter().zip(self.key_list.iter())
{
if is_matches {
if self.comparator.matches(
value,
pattern_expr.to_cow().as_ref(),
*capture_positions,
&mut captured_values,
) {
return true;
}
} else if self.comparator.regex(
pattern,
pattern_expr,
value,
*capture_positions,
&mut captured_values,
) {
return true;
}
}
false
})
},
);
if !captured_values.is_empty() {
ctx.set_match_variables(captured_values);
}
result
}
MatchType::Count(rel_match) => {
let mut count = 0;
ctx.find_headers(
&header_list,
self.index,
self.mime_anychild,
|header, _, _| {
match &mime_opts {
MimeOpts::None => {
count += 1;
}
MimeOpts::Type | MimeOpts::Subtype | MimeOpts::ContentType => {
if let HeaderValue::ContentType(_) = &header.value {
count += 1;
}
}
MimeOpts::Param(params) => {
if let HeaderValue::ContentType(ct) = &header.value {
if let Some(attributes) = &ct.attributes {
for (attr_name, _) in attributes {
if params
.iter()
.any(|p| p.to_cow().eq_ignore_ascii_case(attr_name))
{
count += 1;
}
}
}
}
}
}
false
},
);
let mut result = false;
for key in &key_list {
if rel_match.cmp(&Number::from(count), &key.to_number()) {
result = true;
break;
}
}
result
}
MatchType::List => {
let mut values: Vec<String> = Vec::new();
ctx.find_headers(
&header_list,
self.index,
self.mime_anychild,
|header, _, _| {
ctx.find_header_values(header, &mime_opts, |value| {
if !value.is_empty() && !values.iter().any(|v| v.eq(value)) {
values.push(value.to_string());
}
false
})
},
);
if !values.is_empty() {
return TestResult::Event {
event: Event::ListContains {
lists: ctx.eval_values_owned(&self.key_list),
values,
match_as: self.comparator.as_match(),
},
is_not: self.is_not,
};
}
false
}
};
TestResult::Bool(result ^ self.is_not)
}
}
impl<'x> Context<'x> {
pub(crate) fn parse_header_names<'z: 'y, 'y>(
&'z self,
header_names: &'y [Value],
) -> Vec<HeaderName<'y>> {
let mut result = Vec::with_capacity(header_names.len());
for header_name in header_names {
if let Some(header_name) = self.parse_header_name(header_name) {
result.push(header_name);
}
}
result
}
#[inline(always)]
pub(crate) fn parse_header_name<'z: 'y, 'y>(
&'z self,
header_name: &'y Value,
) -> Option<HeaderName<'y>> {
HeaderName::parse(self.eval_value(header_name).into_cow())
}
pub(crate) fn find_headers(
&self,
header_names: &[HeaderName],
index: Option<i32>,
any_child: bool,
mut visitor_fnc: impl FnMut(&Header, usize, usize) -> bool,
) -> bool {
let parts = [self.part];
let mut part_iter = SubpartIterator::new(self, &parts, any_child);
while let Some((part_id, message_part)) = part_iter.next() {
'outer: for header_name in header_names {
match index {
None => {
for (pos, header) in message_part
.headers
.iter()
.enumerate()
.filter(|(_, h)| &h.name == header_name)
{
if visitor_fnc(header, part_id, pos) {
return true;
}
}
}
Some(index) if index >= 0 => {
let mut header_count = 0;
for (pos, header) in message_part.headers.iter().enumerate() {
if &header.name == header_name {
header_count += 1;
if header_count == index {
if visitor_fnc(header, part_id, pos) {
return true;
}
continue 'outer;
}
}
}
}
Some(index) => {
let index = -index;
let mut header_count = 0;
for (pos, header) in message_part.headers.iter().enumerate().rev() {
if &header.name == header_name {
header_count += 1;
if header_count == index {
if visitor_fnc(header, part_id, pos) {
return true;
}
break;
}
}
}
}
}
}
}
false
}
#[allow(unused_assignments)]
pub(crate) fn find_header_values(
&self,
header: &Header,
mime_opts: &MimeOpts<Variable>,
mut visitor_fnc: impl FnMut(&str) -> bool,
) -> bool {
let mut raw_header = None;
let mut header_value_ = None;
let header_value = if header.offset_end != 0 {
&header.value
} else {
let value = if let HeaderValue::Text(text) = &header.value {
text.as_ref()
} else {
#[cfg(test)]
panic!("Unexpected value.");
#[cfg(not(test))]
return false;
};
if mime_opts == &MimeOpts::None {
return visitor_fnc(value);
} else {
raw_header = format!("{value}\n").into_bytes().into();
header_value_ = MessageStream::new(raw_header.as_ref().unwrap())
.parse_content_type()
.into();
header_value_.as_ref().unwrap()
}
};
match (mime_opts, header_value) {
(MimeOpts::None, HeaderValue::Text(text))
if matches!(
&header.name,
HeaderName::Subject
| HeaderName::Comments
| HeaderName::ContentDescription
| HeaderName::ContentLocation
| HeaderName::ContentTransferEncoding,
) =>
{
visitor_fnc(text.as_ref())
}
(MimeOpts::None, _) => {
if let HeaderValue::Text(text) = MessageStream::new(
self.message
.raw_message
.get(header.offset_start..header.offset_end)
.unwrap_or(b""),
)
.parse_unstructured()
{
visitor_fnc(text.as_ref())
} else {
visitor_fnc("")
}
}
(MimeOpts::Type, HeaderValue::ContentType(ct)) => visitor_fnc(ct.c_type.as_ref()),
(MimeOpts::Subtype, HeaderValue::ContentType(ct)) => {
visitor_fnc(ct.c_subtype.as_deref().unwrap_or(""))
}
(MimeOpts::ContentType, HeaderValue::ContentType(ct)) => {
if let Some(sub_type) = &ct.c_subtype {
visitor_fnc(&format!("{}/{}", ct.c_type, sub_type))
} else {
visitor_fnc(ct.c_type.as_ref())
}
}
(MimeOpts::Param(params), HeaderValue::ContentType(ct)) => {
if let Some(attributes) = &ct.attributes {
for param in params {
for (attr_name, attr_value) in attributes {
if param.to_cow().eq_ignore_ascii_case(attr_name)
&& visitor_fnc(attr_value.as_ref())
{
return true;
}
}
}
}
visitor_fnc("")
}
_ => visitor_fnc(""),
}
}
}

@ -0,0 +1,149 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::{
compiler::{
grammar::{
tests::test_mailbox::{TestMetadata, TestMetadataExists},
MatchType,
},
Number,
},
runtime::Variable,
Context, Metadata,
};
use super::TestResult;
impl TestMetadata {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let metadata = match &self.medatata {
Metadata::Server { annotation } => Metadata::Server {
annotation: ctx.eval_value(annotation).into_cow(),
},
Metadata::Mailbox { name, annotation } => Metadata::Mailbox {
name: ctx.eval_value(name).into_cow(),
annotation: ctx.eval_value(annotation).into_cow(),
},
};
let value = if let Some((_, value)) = [&ctx.metadata, &ctx.runtime.metadata]
.into_iter()
.flatten()
.find(|(m, _)| match (m, &metadata) {
(Metadata::Server { annotation: a }, Metadata::Server { annotation: b }) => {
a.eq_ignore_ascii_case(b)
}
(
Metadata::Mailbox {
name: a,
annotation: c,
},
Metadata::Mailbox {
name: b,
annotation: d,
},
) => a.eq(b) && c.eq_ignore_ascii_case(d),
_ => false,
}) {
value.as_ref()
} else {
return TestResult::Bool(false ^ self.is_not);
};
let mut result = false;
if let MatchType::Count(match_type) = &self.match_type {
for key in &self.key_list {
if match_type.cmp(&Number::Float(1.0), &ctx.eval_value(key).to_number()) {
result = true;
break;
}
}
} else {
let mut captured_values = Vec::new();
for pattern in &self.key_list {
let key = ctx.eval_value(pattern);
result = match &self.match_type {
MatchType::Is => self.comparator.is(&Variable::from(value), &key),
MatchType::Contains => self.comparator.contains(value, key.into_cow().as_ref()),
MatchType::Value(relation) => {
self.comparator
.relational(relation, &Variable::from(value), &key)
}
MatchType::Matches(capture_positions) => self.comparator.matches(
value,
key.into_cow().as_ref(),
*capture_positions,
&mut captured_values,
),
MatchType::Regex(capture_positions) => self.comparator.regex(
pattern,
&key,
value,
*capture_positions,
&mut captured_values,
),
_ => false,
};
if result {
break;
}
}
if !captured_values.is_empty() {
ctx.set_match_variables(captured_values);
}
}
TestResult::Bool(result ^ self.is_not)
}
}
impl TestMetadataExists {
pub(crate) fn exec(&self, ctx: &Context) -> TestResult {
let mailbox = self
.mailbox
.as_ref()
.map(|s| ctx.eval_value(s).into_string());
let mut annotations = ctx.eval_values(&self.annotation_names);
for (metadata, _) in [&ctx.metadata, &ctx.runtime.metadata].into_iter().flatten() {
match (metadata, mailbox.as_ref()) {
(Metadata::Server { annotation }, None) => {
annotations.retain(|a| !a.to_cow().eq_ignore_ascii_case(annotation))
}
(Metadata::Mailbox { name, annotation }, Some(mailbox)) if name.eq(mailbox) => {
annotations.retain(|a| !a.to_cow().eq_ignore_ascii_case(annotation));
}
_ => (),
}
if annotations.is_empty() {
return TestResult::Bool(true ^ self.is_not);
}
}
TestResult::Bool(false ^ self.is_not)
}
}

@ -0,0 +1,116 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use std::borrow::Cow;
use crate::sieve::{
compiler::{
grammar::{
tests::test_notify::{TestNotifyMethodCapability, TestValidNotifyMethod},
MatchType,
},
Number,
},
runtime::{actions::action_notify::validate_uri, Variable},
Context,
};
use super::TestResult;
impl TestValidNotifyMethod {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let mut num_valid = 0;
for uri in &self.notification_uris {
let uri = ctx.eval_value(uri).into_cow();
if let Some(scheme) = validate_uri(uri.as_ref()) {
if ctx
.runtime
.valid_notification_uris
.contains(&Cow::from(scheme))
|| ctx.runtime.valid_notification_uris.contains(&uri)
{
num_valid += 1;
}
}
}
TestResult::Bool((num_valid == self.notification_uris.len()) ^ self.is_not)
}
}
impl TestNotifyMethodCapability {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let uri = ctx.eval_value(&self.notification_uri).into_cow();
if !ctx
.eval_value(&self.notification_capability)
.into_cow()
.eq_ignore_ascii_case("online")
|| !validate_uri(uri.as_ref()).map_or(false, |scheme| {
ctx.runtime
.valid_notification_uris
.contains(&Cow::from(scheme))
|| ctx.runtime.valid_notification_uris.contains(&uri)
})
{
return TestResult::Bool(false ^ self.is_not);
}
if let MatchType::Count(rel_match) = &self.match_type {
for key in &self.key_list {
if rel_match.cmp(&Number::from(1.0), &ctx.eval_value(key).to_number()) {
return TestResult::Bool(true ^ self.is_not);
}
}
} else {
for pattern in &self.key_list {
let key = ctx.eval_value(pattern);
if match &self.match_type {
MatchType::Is => self.comparator.is(&Variable::from("maybe"), &key),
MatchType::Contains => {
self.comparator.contains("maybe", key.into_cow().as_ref())
}
MatchType::Value(relation) => {
self.comparator
.relational(relation, &Variable::from("maybe"), &key)
}
MatchType::Matches(_) => self.comparator.matches(
"maybe",
key.into_cow().as_ref(),
0,
&mut Vec::new(),
),
MatchType::Regex(_) => {
self.comparator
.regex(pattern, &key, "maybe", 0, &mut Vec::new())
}
_ => false,
} {
return TestResult::Bool(true ^ self.is_not);
}
}
}
TestResult::Bool(false ^ self.is_not)
}
}

@ -0,0 +1,38 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::{compiler::grammar::tests::test_size::TestSize, Context};
use super::TestResult;
impl TestSize {
pub(crate) fn exec(&self, ctx: &Context) -> TestResult {
TestResult::Bool(
(if self.over {
ctx.message_size > self.limit
} else {
ctx.message_size < self.limit
}) ^ self.is_not,
)
}
}

@ -0,0 +1,234 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::{
compiler::{
grammar::{
tests::test_spamtest::{TestSpamTest, TestVirusTest},
MatchType,
},
Number,
},
runtime::Variable,
Context, SpamStatus, VirusStatus,
};
use super::TestResult;
impl TestSpamTest {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let status = if self.percent {
ctx.spam_status.as_percentage()
} else {
ctx.spam_status.as_number()
};
let value = ctx.eval_value(&self.value);
let mut captured_values = Vec::new();
let result = match &self.match_type {
MatchType::Is => self.comparator.is(&status, &value),
MatchType::Contains => self
.comparator
.contains(status.into_cow().as_ref(), value.into_cow().as_ref()),
MatchType::Value(rel_match) => self.comparator.relational(rel_match, &status, &value),
MatchType::Matches(capture_positions) => self.comparator.matches(
status.into_cow().as_ref(),
value.into_cow().as_ref(),
*capture_positions,
&mut captured_values,
),
MatchType::Regex(capture_positions) => self.comparator.regex(
&self.value,
&value,
status.into_cow().as_ref(),
*capture_positions,
&mut captured_values,
),
MatchType::Count(rel_match) => rel_match.cmp(
&Number::from(if matches!(&ctx.spam_status, SpamStatus::Unknown) {
0.0
} else {
1.1
}),
&value.to_number(),
),
MatchType::List => false,
};
if !captured_values.is_empty() {
ctx.set_match_variables(captured_values);
}
TestResult::Bool(result ^ self.is_not)
}
}
impl TestVirusTest {
pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
let status = ctx.virus_status.as_number();
let value = ctx.eval_value(&self.value);
let mut captured_values = Vec::new();
let result = match &self.match_type {
MatchType::Is => self.comparator.is(&status, &value),
MatchType::Contains => self
.comparator
.contains(status.into_cow().as_ref(), value.into_cow().as_ref()),
MatchType::Value(rel_match) => self.comparator.relational(rel_match, &status, &value),
MatchType::Matches(capture_positions) => self.comparator.matches(
status.into_cow().as_ref(),
value.into_cow().as_ref(),
*capture_positions,
&mut captured_values,
),
MatchType::Regex(capture_positions) => self.comparator.regex(
&self.value,
&value,
status.into_cow().as_ref(),
*capture_positions,
&mut captured_values,
),
MatchType::Count(rel_match) => rel_match.cmp(
&Number::from(if matches!(&ctx.virus_status, VirusStatus::Unknown) {
0.0
} else {
1.1
}),
&value.to_number(),
),
MatchType::List => false,
};
if !captured_values.is_empty() {
ctx.set_match_variables(captured_values);
}
TestResult::Bool(result ^ self.is_not)
}
}
impl SpamStatus {
pub fn from_number(number: u32) -> Self {
match number {
1 => SpamStatus::Ham,
2..=9 => SpamStatus::MaybeSpam(number as f64 / 10.0),
10 => SpamStatus::Spam,
_ => SpamStatus::Unknown,
}
}
pub(crate) fn as_number(&self) -> Variable<'static> {
Variable::Integer(match self {
SpamStatus::Unknown => 0,
SpamStatus::Ham => 1,
SpamStatus::MaybeSpam(pct) => {
let n = (pct * 10.0) as i64;
if n < 2 {
2
} else if n > 9 {
9
} else {
n
}
}
SpamStatus::Spam => 10,
})
}
pub(crate) fn as_percentage(&self) -> Variable<'static> {
Variable::Integer(match self {
SpamStatus::Unknown | SpamStatus::Ham => 0,
SpamStatus::MaybeSpam(pct) => {
let n = (pct * 100.0).ceil() as i64;
if n > 100 {
100
} else if n < 1 {
1
} else {
n
}
}
SpamStatus::Spam => 100,
})
}
}
impl VirusStatus {
pub fn from_number(number: u32) -> Self {
match number {
1 => VirusStatus::Clean,
2 => VirusStatus::Replaced,
3 => VirusStatus::Cured,
4 => VirusStatus::MaybeVirus,
5 => VirusStatus::Virus,
_ => VirusStatus::Unknown,
}
}
pub(crate) fn as_number(&self) -> Variable<'static> {
Variable::Integer(match self {
VirusStatus::Unknown => 0,
VirusStatus::Clean => 1,
VirusStatus::Replaced => 2,
VirusStatus::Cured => 3,
VirusStatus::MaybeVirus => 4,
VirusStatus::Virus => 5,
})
}
}
impl From<u32> for SpamStatus {
fn from(number: u32) -> Self {
SpamStatus::from_number(number)
}
}
impl From<i32> for SpamStatus {
fn from(number: i32) -> Self {
SpamStatus::from_number(number as u32)
}
}
impl From<usize> for SpamStatus {
fn from(number: usize) -> Self {
SpamStatus::from_number(number as u32)
}
}
impl From<u32> for VirusStatus {
fn from(number: u32) -> Self {
VirusStatus::from_number(number)
}
}
impl From<i32> for VirusStatus {
fn from(number: i32) -> Self {
VirusStatus::from_number(number as u32)
}
}
impl From<usize> for VirusStatus {
fn from(number: usize) -> Self {
VirusStatus::from_number(number as u32)
}
}

@ -0,0 +1,122 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::{
compiler::{
grammar::{tests::test_string::TestString, MatchType},
Number,
},
Context, Event,
};
use super::TestResult;
impl TestString {
pub(crate) fn exec(&self, ctx: &mut Context, empty_is_null: bool) -> TestResult {
let mut result = false;
match &self.match_type {
MatchType::Count(match_type) => {
let num_items = self
.source
.iter()
.filter(|x| !ctx.eval_value(x).is_empty())
.count() as i64;
if !empty_is_null || num_items > 0 {
for key in &self.key_list {
if match_type
.cmp(&Number::from(num_items), &ctx.eval_value(key).to_number())
{
result = true;
break;
}
}
}
}
MatchType::List => {
let mut values = Vec::with_capacity(self.source.len());
for source in &self.source {
let value = ctx.eval_value(source).into_cow();
if !value.is_empty() && !values.iter().any(|v: &String| v.eq(value.as_ref())) {
values.push(value.into_owned());
}
}
if !values.is_empty() {
return TestResult::Event {
event: Event::ListContains {
lists: ctx.eval_values_owned(&self.key_list),
values,
match_as: self.comparator.as_match(),
},
is_not: self.is_not,
};
}
}
_ => {
let mut captured_values = Vec::new();
let sources = ctx.eval_values(&self.source);
for pattern in &self.key_list {
let key = ctx.eval_value(pattern);
for source in &sources {
if !empty_is_null || !source.is_empty() {
result = match &self.match_type {
MatchType::Is => self.comparator.is(source, &key),
MatchType::Contains => self
.comparator
.contains(source.to_cow().as_ref(), key.to_cow().as_ref()),
MatchType::Value(relation) => {
self.comparator.relational(relation, source, &key)
}
MatchType::Matches(capture_positions) => self.comparator.matches(
source.to_cow().as_ref(),
key.to_cow().as_ref(),
*capture_positions,
&mut captured_values,
),
MatchType::Regex(capture_positions) => self.comparator.regex(
pattern,
&key,
source.to_cow().as_ref(),
*capture_positions,
&mut captured_values,
),
_ => false,
};
if result {
break;
}
}
}
}
if !captured_values.is_empty() {
ctx.set_match_variables(captured_values);
}
}
}
TestResult::Bool(result ^ self.is_not)
}
}

@ -0,0 +1,52 @@
/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use crate::sieve::Context;
use super::Variable;
impl<'x> Context<'x> {
pub(crate) fn set_match_variables(&mut self, set_vars: Vec<(usize, String)>) {
for (var_num, value) in set_vars {
if let Some(var) = self.vars_match.get_mut(var_num) {
*var = value.into();
} else {
debug_assert!(false, "Invalid match variable {var_num}");
}
}
}
pub(crate) fn clear_match_variables(&mut self, mut positions: u64) {
while positions != 0 {
let index = 63 - positions.leading_zeros();
positions ^= 1 << index;
if let Some(match_var) = self.vars_match.get_mut(index as usize) {
if !match_var.is_empty() {
*match_var = Variable::default();
}
} else {
debug_assert!(false, "Failed to clear match variable at index {index}.");
}
}
}
}

@ -0,0 +1,11 @@
Test suite from Dovecot Pigeonhole.
AUTHORS
===
Stephan Bosch <stephan@rename-it.nl>
This package is built for and partly based on the Dovecot Secure IMAP server
written by:
Timo Sirainen <tss@iki.fi>.

@ -0,0 +1,39 @@
require "vnd.stalwart.testsuite";
test_set "message" text:
From: stephan@example.org
Cc: frop@example.com
To: test@dovecot.example.net
X-A: This is a TEST header
Subject: Test Message
Test!
.
;
test "i;ascii-casemap :contains (1)" {
if not header :contains :comparator "i;ascii-casemap" "X-A" "TEST" {
test_fail "should have matched";
}
}
test "i;ascii-casemap :contains (2)" {
if not header :contains :comparator "i;ascii-casemap" "X-A" "test" {
test_fail "should have matched";
}
}
test "i;ascii-casemap :matches (1)" {
if not header :matches :comparator "i;ascii-casemap" "X-A" "This*TEST*r" {
test_fail "should have matched";
}
}
test "i;ascii-casemap :matches (2)" {
if not header :matches :comparator "i;ascii-casemap" "X-A" "ThIs*tEsT*R" {
test_fail "should have matched";
}
}

@ -0,0 +1,37 @@
require "vnd.stalwart.testsuite";
test_set "message" text:
From: stephan@example.org
Cc: frop@example.com
To: test@dovecot.example.net
X-A: This is a TEST header
Subject: Test Message
Test!
.
;
test "i;octet :contains" {
if not header :contains :comparator "i;octet" "X-A" "TEST" {
test_fail "should have matched";
}
}
test "i;octet not :contains" {
if header :contains :comparator "i;octet" "X-A" "test" {
test_fail "should not have matched";
}
}
test "i;octet :matches" {
if not header :matches :comparator "i;octet" "X-A" "This*TEST*r" {
test_fail "should have matched";
}
}
test "i;octet not :matches" {
if header :matches :comparator "i;octet" "X-A" "ThIs*tEsT*R" {
test_fail "should not have matched";
}
}

@ -0,0 +1,48 @@
require "vnd.stalwart.testsuite";
# Just test whether valid scripts will compile without problems
test "Trivial" {
# Commands must be case-insensitive
keep;
Keep;
KEEP;
discard;
DisCaRD;
# Tags must be case-insensitive
if size :UNDER 34 {
}
if header :Is "from" "tukker@example.com" {
}
# Numbers must be case-insensitive
if anyof( size :UNDER 34m, size :oVeR 50M ) {
}
}
test "Redirect" {
redirect "stephan@example.org";
redirect " stephan@example.org";
redirect "stephan @example.org";
redirect "stephan@ example.org";
redirect "stephan@example.org ";
redirect " stephan @ example.org ";
redirect "Stephan Bosch<stephan@example.org>";
redirect " Stephan Bosch<stephan@example.org>";
redirect "Stephan Bosch <stephan@example.org>";
redirect "Stephan Bosch< stephan@example.org>";
redirect "Stephan Bosch<stephan @example.org>";
redirect "Stephan Bosch<stephan@ example.org>";
redirect "Stephan Bosch<stephan@example.org >";
redirect "Stephan Bosch<stephan@example.org> ";
redirect " Stephan Bosch < stephan @ example.org > ";
# Test address syntax
redirect "\"Stephan Bosch\"@example.org";
redirect "Stephan.Bosch@eXamPle.oRg";
redirect "Stephan.Bosch@example.org";
redirect "Stephan Bosch <stephan@example.org>";
}

@ -0,0 +1,225 @@
require "vnd.stalwart.testsuite";
require "relational";
require "comparator-i;ascii-numeric";
/*
* Errors triggered in the compiled scripts are pretty reduntant over the
* tested commands, but we want to be thorough.
*/
/*
* Lexer errors
*/
test "Lexer errors (FIXME: count only)" {
if test_script_compile "errors/lexer.sieve" {
test_fail "compile should have failed.";
}
}
/*
* Parser errors
*/
test "Parser errors (FIXME: count only)" {
if test_script_compile "errors/parser.sieve" {
test_fail "compile should have failed.";
}
}
/*
* Header test
*/
test "Header errors" {
if test_script_compile "errors/header.sieve" {
test_fail "compile should have failed.";
}
}
/*
* Address test
*/
test "Address errors" {
if test_script_compile "errors/address.sieve" {
test_fail "compile should have failed.";
}
}
/*
* If command
*/
test "If errors (FIXME: count only)" {
if test_script_compile "errors/if.sieve" {
test_fail "compile should have failed.";
}
}
/*
* Require command
*/
test "Require errors (FIXME: count only)" {
if test_script_compile "errors/require.sieve" {
test_fail "compile should have failed.";
}
}
/*
* Size test
*/
test "Size errors (FIXME: count only)" {
if test_script_compile "errors/size.sieve" {
test_fail "compile should have failed.";
}
}
/*
* Envelope test
*/
test "Envelope errors (FIXME: count only)" {
if test_script_compile "errors/envelope.sieve" {
test_fail "compile should have failed.";
}
}
/*
* Stop command
*/
test "Stop errors (FIXME: count only)" {
if test_script_compile "errors/stop.sieve" {
test_fail "compile should have failed.";
}
}
/*
* Keep command
*/
test "Keep errors (FIXME: count only)" {
if test_script_compile "errors/keep.sieve" {
test_fail "compile should have failed.";
}
}
/*
* Fileinto command
*/
test "Fileinto errors (FIXME: count only)" {
if test_script_compile "errors/fileinto.sieve" {
test_fail "compile should have failed.";
}
}
/*
* COMPARATOR errors
*/
test "COMPARATOR errors (FIXME: count only)" {
if test_script_compile "errors/comparator.sieve" {
test_fail "compile should have failed.";
}
}
/*
* ADDRESS-PART errors
*/
test "ADDRESS-PART errors (FIXME: count only)" {
if test_script_compile "errors/address-part.sieve" {
test_fail "compile should have failed.";
}
}
/*
* MATCH-TYPE errors
*/
test "MATCH-TYPE errors (FIXME: count only)" {
if test_script_compile "errors/match-type.sieve" {
test_fail "compile should have failed.";
}
}
/*
* Encoded-character errors
*/
test "Encoded-character errors (FIXME: count only)" {
if test_script_compile "errors/encoded-character.sieve" {
test_fail "compile should have failed.";
}
}
/*
* Outgoing address errors
*/
/*test "Outgoing address errors (FIXME: count only)" {
if test_script_compile "errors/out-address.sieve" {
test_fail "compile should have failed.";
}
}*/
/*
* Tagged argument errors
*/
test "Tagged argument errors (FIXME: count only)" {
if test_script_compile "errors/tag.sieve" {
test_fail "compile should have failed.";
}
}
/*
* Typos
*/
test "Typos" {
if test_script_compile "errors/typos.sieve" {
test_fail "compile should have failed.";
}
}
/*
* Unsupported language features
*/
test "Unsupported language features (FIXME: count only)" {
if test_script_compile "errors/unsupported.sieve" {
test_fail "compile should have failed.";
}
}

@ -0,0 +1,17 @@
/*
* Address part errors
*
* Total errors: 2 (+1 = 3)
*/
# Duplicate address part (1)
if address :all :comparator "i;octet" :domain "from" "STEPHAN" {
# Duplicate address part (2)
if address :domain :localpart :comparator "i;octet" "from" "friep.example.com" {
keep;
}
stop;
}

@ -0,0 +1,71 @@
require "comparator-i;ascii-numeric";
/*
* Address test errors
*
* Total count: 8 (+1 = 9)
*/
/*
* Command structure
*/
# Invalid tag
if address :nonsense :comparator "i;ascii-casemap" :localpart "From" "nico" {
discard;
}
# Invalid first argument
if address :is :comparator "i;ascii-numeric" :localpart 45 "nico" {
discard;
}
# Invalid second argument
if address :is :comparator "i;ascii-numeric" :localpart "From" 45 {
discard;
}
# Invalid second argument
if address :comparator "i;ascii-numeric" :localpart "From" :is {
discard;
}
# Missing second argument
if address :is :comparator "i;ascii-numeric" :localpart "From" {
discard;
}
# Missing arguments
if address :is :comparator "i;ascii-numeric" :localpart {
discard;
}
# Not an error
if address :localpart :is :comparator "i;ascii-casemap" "from" ["frop", "frop"] {
discard;
}
/*
* Specified headers must contain addresses
*/
# Invalid header
if address :is "frop" "frml" {
keep;
}
# Not an error
if address :is "reply-to" "frml" {
keep;
}
# Invalid header (#2)
if address :is ["to", "frop"] "frml" {
keep;
}
# Not an error
if address :is ["to", "reply-to"] "frml" {
keep;
}

@ -0,0 +1,21 @@
/*
* Address part errors
*
* Total errors: 5 (+1 = 6)
*/
# 1: No argument
if address :comparator { }
# 2: Number argument
if address :comparator 1 "from" "frop" { }
# 3: String list argument
if address :comparator ["a", "b"] "from" "frop" { }
# 4: Unknown tag
if address :comparator :frop "from" "frop" { }
# 5: Known tag
if address :comparator :all "from" "frop" { }

@ -0,0 +1,23 @@
/*
* Encoded-character errors
*
* Total errors: 2 (+1 = 3)
*/
require "encoded-character";
require "fileinto";
# Invalid unicode character (1)
fileinto "INBOX.${unicode:200000}";
# Not an error
fileinto "INBOX.${unicode:200000";
# Invalid unicode character (2)
fileinto "INBOX.${Unicode:DF01}";
# Not an error
fileinto "INBOX.${Unicode:DF01";

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