1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
use crate::sendmail::error::SendmailResult;
use crate::SendableEmail;
use crate::Transport;
use async_std::prelude::*;
use async_trait::async_trait;
use log::info;
use std::convert::AsRef;
use std::io::prelude::*;
use std::{
process::{Command, Stdio},
time::Duration,
};
pub mod error;
#[derive(Debug, Default)]
#[cfg_attr(
feature = "serde-impls",
derive(serde_derive::Serialize, serde_derive::Deserialize)
)]
pub struct SendmailTransport {
command: String,
}
impl SendmailTransport {
pub fn new() -> SendmailTransport {
SendmailTransport {
command: "/usr/sbin/sendmail".to_string(),
}
}
pub fn new_with_command<S: Into<String>>(command: S) -> SendmailTransport {
SendmailTransport {
command: command.into(),
}
}
}
#[allow(clippy::unwrap_used)]
#[async_trait]
impl<'a> Transport<'a> for SendmailTransport {
type Result = SendmailResult;
async fn send(&mut self, email: SendableEmail) -> SendmailResult {
let message_id = email.message_id().to_string();
let command = self.command.clone();
let from = email
.envelope()
.from()
.map(AsRef::as_ref)
.unwrap_or("\"\"")
.to_owned();
let to = email.envelope().to().to_owned();
let mut message_content = String::new();
let _ = email.message().read_to_string(&mut message_content).await;
let output = async_std::task::spawn_blocking(move || {
let mut process = Command::new(command)
.arg("-i")
.arg("-f")
.arg(from)
.arg("--")
.args(to)
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()?;
process
.stdin
.as_mut()
.unwrap()
.write_all(message_content.as_bytes())?;
info!("Wrote {} message to stdin", message_id);
process.wait_with_output()
})
.await?;
if output.status.success() {
Ok(())
} else {
Err(error::Error::Client(String::from_utf8(output.stderr)?))
}
}
async fn send_with_timeout(
&mut self,
email: SendableEmail,
_timeout: Option<&Duration>,
) -> Self::Result {
self.send(email).await
}
}