mirror of https://git.meli.delivery/meli/meli
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
183 lines
5.9 KiB
Rust
183 lines
5.9 KiB
Rust
5 years ago
|
/*
|
||
|
* meli - imap module.
|
||
|
*
|
||
|
* Copyright 2017 - 2019 Manos Pitsidianakis
|
||
|
*
|
||
|
* This file is part of meli.
|
||
|
*
|
||
|
* meli is free software: you can redistribute it and/or modify
|
||
|
* it under the terms of the GNU General Public License as published by
|
||
|
* the Free Software Foundation, either version 3 of the License, or
|
||
|
* (at your option) any later version.
|
||
|
*
|
||
|
* meli 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 General Public License for more details.
|
||
|
*
|
||
|
* You should have received a copy of the GNU General Public License
|
||
|
* along with meli. If not, see <http://www.gnu.org/licenses/>.
|
||
|
*/
|
||
|
|
||
|
use crate::email::parser::BytesExt;
|
||
|
use crate::error::*;
|
||
|
use std::io::Read;
|
||
|
use std::io::Write;
|
||
|
|
||
|
#[derive(Debug)]
|
||
|
pub struct ImapConnection {
|
||
|
pub cmd_id: usize,
|
||
|
pub stream: native_tls::TlsStream<std::net::TcpStream>,
|
||
|
}
|
||
|
|
||
|
impl Drop for ImapConnection {
|
||
|
fn drop(&mut self) {
|
||
|
self.send_command(b"LOGOUT").ok().take();
|
||
|
}
|
||
|
}
|
||
|
|
||
|
impl ImapConnection {
|
||
|
pub fn read_response(&mut self, ret: &mut String) -> Result<()> {
|
||
|
let id = format!("M{} ", self.cmd_id - 1);
|
||
|
self.read_lines(ret, id)
|
||
|
}
|
||
|
|
||
|
pub fn read_lines(&mut self, ret: &mut String, termination_string: String) -> Result<()> {
|
||
|
let mut buf: [u8; 1024] = [0; 1024];
|
||
|
ret.clear();
|
||
|
let mut last_line_idx: usize = 0;
|
||
|
loop {
|
||
|
match self.stream.read(&mut buf) {
|
||
|
Ok(0) => break,
|
||
|
Ok(b) => {
|
||
|
ret.push_str(unsafe { std::str::from_utf8_unchecked(&buf[0..b]) });
|
||
|
if let Some(mut pos) = ret[last_line_idx..].rfind("\r\n") {
|
||
|
if ret[last_line_idx..].starts_with("* BYE") {
|
||
|
return Err(MeliError::new("Disconnected"));
|
||
|
}
|
||
|
if let Some(prev_line) =
|
||
|
ret[last_line_idx..pos + last_line_idx].rfind("\r\n")
|
||
|
{
|
||
|
last_line_idx += prev_line + 2;
|
||
|
pos -= prev_line + 2;
|
||
|
}
|
||
|
if pos + "\r\n".len() == ret[last_line_idx..].len() {
|
||
|
if !termination_string.is_empty()
|
||
|
&& ret[last_line_idx..].starts_with(termination_string.as_str())
|
||
|
{
|
||
|
debug!(&ret[last_line_idx..]);
|
||
|
ret.replace_range(last_line_idx.., "");
|
||
|
break;
|
||
|
} else if termination_string.is_empty() {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
last_line_idx += pos + 2;
|
||
|
}
|
||
|
}
|
||
|
Err(ref e) if e.kind() == std::io::ErrorKind::WouldBlock => {
|
||
|
continue;
|
||
|
}
|
||
|
Err(e) => return Err(MeliError::from(e)),
|
||
|
}
|
||
|
}
|
||
|
Ok(())
|
||
|
}
|
||
|
|
||
|
pub fn wait_for_continuation_request(&mut self) -> Result<()> {
|
||
|
let term = "+ ".to_string();
|
||
|
let mut ret = String::new();
|
||
|
self.read_lines(&mut ret, term)
|
||
|
}
|
||
|
|
||
|
pub fn send_command(&mut self, command: &[u8]) -> Result<usize> {
|
||
|
let command = command.trim();
|
||
|
self.stream.write_all(b"M").unwrap();
|
||
|
self.stream
|
||
|
.write_all(self.cmd_id.to_string().as_bytes())
|
||
|
.unwrap();
|
||
|
self.stream.write_all(b" ").unwrap();
|
||
|
let ret = self.cmd_id;
|
||
|
self.cmd_id += 1;
|
||
|
self.stream.write_all(command).unwrap();
|
||
|
self.stream.write_all(b"\r\n").unwrap();
|
||
|
debug!("sent: M{} {}", self.cmd_id - 1, unsafe {
|
||
|
std::str::from_utf8_unchecked(command)
|
||
|
});
|
||
|
Ok(ret)
|
||
|
}
|
||
|
|
||
|
pub fn send_literal(&mut self, data: &[u8]) -> Result<()> {
|
||
|
self.stream.write_all(data).unwrap();
|
||
|
if !data.ends_with(b"\r\n") {
|
||
|
self.stream.write_all(b"\r\n").unwrap();
|
||
|
}
|
||
|
self.stream.write_all(b"\r\n").unwrap();
|
||
|
Ok(())
|
||
|
}
|
||
|
|
||
|
pub fn send_raw(&mut self, raw: &[u8]) -> Result<()> {
|
||
|
self.stream.write_all(raw).unwrap();
|
||
|
self.stream.write_all(b"\r\n").unwrap();
|
||
|
Ok(())
|
||
|
}
|
||
|
|
||
|
pub fn set_nonblocking(&mut self, val: bool) -> Result<()> {
|
||
|
self.stream.get_mut().set_nonblocking(val)?;
|
||
|
Ok(())
|
||
|
}
|
||
|
}
|
||
|
|
||
|
pub struct ImapBlockingConnection {
|
||
|
buf: [u8; 1024],
|
||
|
result: Vec<u8>,
|
||
|
prev_res_length: usize,
|
||
|
pub conn: ImapConnection,
|
||
|
}
|
||
|
|
||
|
impl From<ImapConnection> for ImapBlockingConnection {
|
||
|
fn from(mut conn: ImapConnection) -> Self {
|
||
|
conn.stream
|
||
|
.get_mut()
|
||
|
.set_nonblocking(false)
|
||
|
.expect("set_nonblocking call failed");
|
||
|
ImapBlockingConnection {
|
||
|
buf: [0; 1024],
|
||
|
conn,
|
||
|
prev_res_length: 0,
|
||
|
result: Vec::with_capacity(8 * 1024),
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
impl ImapBlockingConnection {
|
||
|
pub fn into_conn(self) -> ImapConnection {
|
||
|
self.conn
|
||
|
}
|
||
|
}
|
||
|
|
||
|
impl Iterator for ImapBlockingConnection {
|
||
|
type Item = Vec<u8>;
|
||
|
fn next(&mut self) -> Option<Self::Item> {
|
||
|
self.result.drain(0..self.prev_res_length);
|
||
|
self.prev_res_length = 0;
|
||
|
loop {
|
||
|
match self.conn.stream.read(&mut self.buf) {
|
||
|
Ok(0) => continue,
|
||
|
Ok(b) => {
|
||
|
self.result.extend_from_slice(&self.buf[0..b]);
|
||
|
debug!(unsafe { std::str::from_utf8_unchecked(&self.result) });
|
||
|
if let Some(pos) = self.result.find(b"\r\n") {
|
||
|
self.prev_res_length = pos + b"\r\n".len();
|
||
|
return Some(self.result[0..self.prev_res_length].to_vec());
|
||
|
}
|
||
|
}
|
||
|
Err(e) => {
|
||
|
debug!(e);
|
||
|
return None;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|