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