socks5_impl/protocol/handshake/password_method/
request.rs

1#[cfg(feature = "tokio")]
2use crate::protocol::AsyncStreamOperation;
3use crate::protocol::{StreamOperation, UserKey};
4#[cfg(feature = "tokio")]
5use async_trait::async_trait;
6#[cfg(feature = "tokio")]
7use tokio::io::{AsyncRead, AsyncReadExt};
8
9/// SOCKS5 password handshake request
10///
11/// ```plain
12/// +-----+------+----------+------+----------+
13/// | VER | ULEN |  UNAME   | PLEN |  PASSWD  |
14/// +-----+------+----------+------+----------+
15/// |  1  |  1   | 1 to 255 |  1   | 1 to 255 |
16/// +-----+------+----------+------+----------+
17/// ```
18
19#[derive(Clone, Debug)]
20pub struct Request {
21    pub user_key: UserKey,
22}
23
24impl Request {
25    pub fn new(username: &str, password: &str) -> Self {
26        let user_key = UserKey::new(username, password);
27        Self { user_key }
28    }
29}
30
31impl StreamOperation for Request {
32    fn retrieve_from_stream<R: std::io::Read>(r: &mut R) -> std::io::Result<Self> {
33        let mut ver = [0; 1];
34        r.read_exact(&mut ver)?;
35        let ver = ver[0];
36
37        if ver != super::SUBNEGOTIATION_VERSION {
38            let err = format!("Unsupported sub-negotiation version {0:#x}", ver);
39            return Err(std::io::Error::new(std::io::ErrorKind::Unsupported, err));
40        }
41
42        let mut ulen = [0; 1];
43        r.read_exact(&mut ulen)?;
44        let ulen = ulen[0];
45        let mut buf = vec![0; ulen as usize + 1];
46        r.read_exact(&mut buf)?;
47
48        let plen = buf[ulen as usize];
49        buf.truncate(ulen as usize);
50        let username = String::from_utf8(buf).map_err(|e| std::io::Error::new(std::io::ErrorKind::InvalidData, e))?;
51
52        let mut password = vec![0; plen as usize];
53        r.read_exact(&mut password)?;
54        let pwd = String::from_utf8(password).map_err(|e| std::io::Error::new(std::io::ErrorKind::InvalidData, e))?;
55
56        let user_key = UserKey::new(username, pwd);
57        Ok(Self { user_key })
58    }
59
60    fn write_to_buf<B: bytes::BufMut>(&self, buf: &mut B) {
61        buf.put_u8(super::SUBNEGOTIATION_VERSION);
62
63        let username = self.user_key.username_arr();
64        buf.put_u8(username.len() as u8);
65        buf.put_slice(&username);
66
67        let password = self.user_key.password_arr();
68        buf.put_u8(password.len() as u8);
69        buf.put_slice(&password);
70    }
71
72    fn len(&self) -> usize {
73        3 + self.user_key.username_arr().len() + self.user_key.password_arr().len()
74    }
75}
76
77#[cfg(feature = "tokio")]
78#[async_trait]
79impl AsyncStreamOperation for Request {
80    async fn retrieve_from_async_stream<R>(r: &mut R) -> std::io::Result<Self>
81    where
82        R: AsyncRead + Unpin + Send + ?Sized,
83    {
84        let ver = r.read_u8().await?;
85
86        if ver != super::SUBNEGOTIATION_VERSION {
87            let err = format!("Unsupported sub-negotiation version {0:#x}", ver);
88            return Err(std::io::Error::new(std::io::ErrorKind::Unsupported, err));
89        }
90
91        let ulen = r.read_u8().await?;
92        let mut buf = vec![0; ulen as usize + 1];
93        r.read_exact(&mut buf).await?;
94
95        let plen = buf[ulen as usize];
96        buf.truncate(ulen as usize);
97        let username = String::from_utf8(buf).map_err(|e| std::io::Error::new(std::io::ErrorKind::InvalidData, e))?;
98
99        let mut password = vec![0; plen as usize];
100        r.read_exact(&mut password).await?;
101        let pwd = String::from_utf8(password).map_err(|e| std::io::Error::new(std::io::ErrorKind::InvalidData, e))?;
102
103        let user_key = UserKey::new(username, pwd);
104        Ok(Self { user_key })
105    }
106}
socks5_impl/protocol/handshake/password_method/request.rs

socks5_impl/protocol/handshake/password_method/
request.rs
