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#![cfg(all(feature = "client-legacy",))]
use tokio::io::{AsyncReadExt, AsyncWriteExt};
use tokio::net::{TcpListener, TcpStream};
use tower_service::Service;
use hyper_util::client::legacy::connect::proxy::{SocksV4, SocksV5, Tunnel};
use hyper_util::client::legacy::connect::HttpConnector;
#[cfg(not(miri))]
#[tokio::test]
async fn test_tunnel_works() {
let tcp = TcpListener::bind("127.0.0.1:0").await.expect("bind");
let addr = tcp.local_addr().expect("local_addr");
let proxy_dst = format!("http://{addr}").parse().expect("uri");
let mut connector = Tunnel::new(proxy_dst, HttpConnector::new());
let t1 = tokio::spawn(async move {
let _conn = connector
.call("https://hyper.rs".parse().unwrap())
.await
.expect("tunnel");
});
let t2 = tokio::spawn(async move {
let (mut io, _) = tcp.accept().await.expect("accept");
let mut buf = [0u8; 64];
let n = io.read(&mut buf).await.expect("read 1");
assert_eq!(
&buf[..n],
b"CONNECT hyper.rs:443 HTTP/1.1\r\nHost: hyper.rs:443\r\n\r\n"
);
io.write_all(b"HTTP/1.1 200 OK\r\n\r\n")
.await
.expect("write 1");
});
t1.await.expect("task 1");
t2.await.expect("task 2");
}
#[cfg(not(miri))]
#[tokio::test]
async fn test_socks_v5_without_auth_works() {
let proxy_tcp = TcpListener::bind("127.0.0.1:0").await.expect("bind");
let proxy_addr = proxy_tcp.local_addr().expect("local_addr");
let proxy_dst = format!("http://{proxy_addr}").parse().expect("uri");
let target_tcp = TcpListener::bind("127.0.0.1:0").await.expect("bind");
let target_addr = target_tcp.local_addr().expect("local_addr");
let target_dst = format!("http://{target_addr}").parse().expect("uri");
let mut connector = SocksV5::new(proxy_dst, HttpConnector::new());
// Client
//
// Will use `SocksV5` to establish proxy tunnel.
// Will send "Hello World!" to the target and receive "Goodbye!" back.
let t1 = tokio::spawn(async move {
let conn = connector.call(target_dst).await.expect("tunnel");
let mut tcp = conn.into_inner();
tcp.write_all(b"Hello World!").await.expect("write 1");
let mut buf = [0u8; 64];
let n = tcp.read(&mut buf).await.expect("read 1");
assert_eq!(&buf[..n], b"Goodbye!");
});
// Proxy
//
// Will receive CONNECT command from client.
// Will connect to target and success code back to client.
// Will blindly tunnel between client and target.
let t2 = tokio::spawn(async move {
let (mut to_client, _) = proxy_tcp.accept().await.expect("accept");
let mut buf = [0u8; 513];
// negotiation req/res
let n = to_client.read(&mut buf).await.expect("read 1");
assert_eq!(&buf[..n], [0x05, 0x01, 0x00]);
to_client.write_all(&[0x05, 0x00]).await.expect("write 1");
// command req/rs
let [p1, p2] = target_addr.port().to_be_bytes();
let [ip1, ip2, ip3, ip4] = [0x7f, 0x00, 0x00, 0x01];
let message = [0x05, 0x01, 0x00, 0x01, ip1, ip2, ip3, ip4, p1, p2];
let n = to_client.read(&mut buf).await.expect("read 2");
assert_eq!(&buf[..n], message);
let mut to_target = TcpStream::connect(target_addr).await.expect("connect");
let message = [0x05, 0x00, 0x00, 0x01, ip1, ip2, ip3, ip4, p1, p2];
to_client.write_all(&message).await.expect("write 2");
let (from_client, from_target) =
tokio::io::copy_bidirectional(&mut to_client, &mut to_target)
.await
.expect("proxy");
assert_eq!(from_client, 12);
assert_eq!(from_target, 8)
});
// Target server
//
// Will accept connection from proxy server
// Will receive "Hello World!" from the client and return "Goodbye!"
let t3 = tokio::spawn(async move {
let (mut io, _) = target_tcp.accept().await.expect("accept");
let mut buf = [0u8; 64];
let n = io.read(&mut buf).await.expect("read 1");
assert_eq!(&buf[..n], b"Hello World!");
io.write_all(b"Goodbye!").await.expect("write 1");
});
t1.await.expect("task - client");
t2.await.expect("task - proxy");
t3.await.expect("task - target");
}
#[cfg(not(miri))]
#[tokio::test]
async fn test_socks_v5_with_auth_works() {
let proxy_tcp = TcpListener::bind("127.0.0.1:0").await.expect("bind");
let proxy_addr = proxy_tcp.local_addr().expect("local_addr");
let proxy_dst = format!("http://{proxy_addr}").parse().expect("uri");
let target_tcp = TcpListener::bind("127.0.0.1:0").await.expect("bind");
let target_addr = target_tcp.local_addr().expect("local_addr");
let target_dst = format!("http://{target_addr}").parse().expect("uri");
let mut connector =
SocksV5::new(proxy_dst, HttpConnector::new()).with_auth("user".into(), "pass".into());
// Client
//
// Will use `SocksV5` to establish proxy tunnel.
// Will send "Hello World!" to the target and receive "Goodbye!" back.
let t1 = tokio::spawn(async move {
let conn = connector.call(target_dst).await.expect("tunnel");
let mut tcp = conn.into_inner();
tcp.write_all(b"Hello World!").await.expect("write 1");
let mut buf = [0u8; 64];
let n = tcp.read(&mut buf).await.expect("read 1");
assert_eq!(&buf[..n], b"Goodbye!");
});
// Proxy
//
// Will receive CONNECT command from client.
// Will connect to target and success code back to client.
// Will blindly tunnel between client and target.
let t2 = tokio::spawn(async move {
let (mut to_client, _) = proxy_tcp.accept().await.expect("accept");
let mut buf = [0u8; 513];
// negotiation req/res
let n = to_client.read(&mut buf).await.expect("read 1");
assert_eq!(&buf[..n], [0x05, 0x01, 0x02]);
to_client.write_all(&[0x05, 0x02]).await.expect("write 1");
// auth req/res
let n = to_client.read(&mut buf).await.expect("read 2");
let [u1, u2, u3, u4] = b"user";
let [p1, p2, p3, p4] = b"pass";
let message = [0x01, 0x04, *u1, *u2, *u3, *u4, 0x04, *p1, *p2, *p3, *p4];
assert_eq!(&buf[..n], message);
to_client.write_all(&[0x01, 0x00]).await.expect("write 2");
// command req/res
let n = to_client.read(&mut buf).await.expect("read 3");
let [p1, p2] = target_addr.port().to_be_bytes();
let [ip1, ip2, ip3, ip4] = [0x7f, 0x00, 0x00, 0x01];
let message = [0x05, 0x01, 0x00, 0x01, ip1, ip2, ip3, ip4, p1, p2];
assert_eq!(&buf[..n], message);
let mut to_target = TcpStream::connect(target_addr).await.expect("connect");
let message = [0x05, 0x00, 0x00, 0x01, ip1, ip2, ip3, ip4, p1, p2];
to_client.write_all(&message).await.expect("write 3");
let (from_client, from_target) =
tokio::io::copy_bidirectional(&mut to_client, &mut to_target)
.await
.expect("proxy");
assert_eq!(from_client, 12);
assert_eq!(from_target, 8)
});
// Target server
//
// Will accept connection from proxy server
// Will receive "Hello World!" from the client and return "Goodbye!"
let t3 = tokio::spawn(async move {
let (mut io, _) = target_tcp.accept().await.expect("accept");
let mut buf = [0u8; 64];
let n = io.read(&mut buf).await.expect("read 1");
assert_eq!(&buf[..n], b"Hello World!");
io.write_all(b"Goodbye!").await.expect("write 1");
});
t1.await.expect("task - client");
t2.await.expect("task - proxy");
t3.await.expect("task - target");
}
#[cfg(not(miri))]
#[tokio::test]
async fn test_socks_v5_with_server_resolved_domain_works() {
let proxy_tcp = TcpListener::bind("127.0.0.1:0").await.expect("bind");
let proxy_addr = proxy_tcp.local_addr().expect("local_addr");
let proxy_addr = format!("http://{proxy_addr}").parse().expect("uri");
let mut connector = SocksV5::new(proxy_addr, HttpConnector::new())
.with_auth("user".into(), "pass".into())
.local_dns(false);
// Client
//
// Will use `SocksV5` to establish proxy tunnel.
// Will send "Hello World!" to the target and receive "Goodbye!" back.
let t1 = tokio::spawn(async move {
let _conn = connector
.call("https://hyper.rs:443".try_into().unwrap())
.await
.expect("tunnel");
});
// Proxy
//
// Will receive CONNECT command from client.
// Will connect to target and success code back to client.
// Will blindly tunnel between client and target.
let t2 = tokio::spawn(async move {
let (mut to_client, _) = proxy_tcp.accept().await.expect("accept");
let mut buf = [0u8; 513];
// negotiation req/res
let n = to_client.read(&mut buf).await.expect("read 1");
assert_eq!(&buf[..n], [0x05, 0x01, 0x02]);
to_client.write_all(&[0x05, 0x02]).await.expect("write 1");
// auth req/res
let n = to_client.read(&mut buf).await.expect("read 2");
let [u1, u2, u3, u4] = b"user";
let [p1, p2, p3, p4] = b"pass";
let message = [0x01, 0x04, *u1, *u2, *u3, *u4, 0x04, *p1, *p2, *p3, *p4];
assert_eq!(&buf[..n], message);
to_client.write_all(&[0x01, 0x00]).await.expect("write 2");
// command req/res
let n = to_client.read(&mut buf).await.expect("read 3");
let host = "hyper.rs";
let port: u16 = 443;
let mut message = vec![0x05, 0x01, 0x00, 0x03, host.len() as u8];
message.extend(host.bytes());
message.extend(port.to_be_bytes());
assert_eq!(&buf[..n], message);
let mut message = vec![0x05, 0x00, 0x00, 0x03, host.len() as u8];
message.extend(host.bytes());
message.extend(port.to_be_bytes());
to_client.write_all(&message).await.expect("write 3");
});
t1.await.expect("task - client");
t2.await.expect("task - proxy");
}
#[cfg(not(miri))]
#[tokio::test]
async fn test_socks_v5_with_locally_resolved_domain_works() {
let proxy_tcp = TcpListener::bind("127.0.0.1:0").await.expect("bind");
let proxy_addr = proxy_tcp.local_addr().expect("local_addr");
let proxy_addr = format!("http://{proxy_addr}").parse().expect("uri");
let mut connector = SocksV5::new(proxy_addr, HttpConnector::new())
.with_auth("user".into(), "pass".into())
.local_dns(true);
// Client
//
// Will use `SocksV5` to establish proxy tunnel.
// Will send "Hello World!" to the target and receive "Goodbye!" back.
let t1 = tokio::spawn(async move {
let _conn = connector
.call("https://hyper.rs:443".try_into().unwrap())
.await
.expect("tunnel");
});
// Proxy
//
// Will receive CONNECT command from client.
// Will connect to target and success code back to client.
// Will blindly tunnel between client and target.
let t2 = tokio::spawn(async move {
let (mut to_client, _) = proxy_tcp.accept().await.expect("accept");
let mut buf = [0u8; 513];
// negotiation req/res
let n = to_client.read(&mut buf).await.expect("read 1");
assert_eq!(&buf[..n], [0x05, 0x01, 0x02]);
to_client.write_all(&[0x05, 0x02]).await.expect("write 1");
// auth req/res
let n = to_client.read(&mut buf).await.expect("read 2");
let [u1, u2, u3, u4] = b"user";
let [p1, p2, p3, p4] = b"pass";
let message = [0x01, 0x04, *u1, *u2, *u3, *u4, 0x04, *p1, *p2, *p3, *p4];
assert_eq!(&buf[..n], message);
to_client.write_all(&[0x01, 0x00]).await.expect("write 2");
// command req/res
let n = to_client.read(&mut buf).await.expect("read 3");
let message = [0x05, 0x01, 0x00];
assert_eq!(&buf[..3], message);
assert!(buf[3] == 0x01 || buf[3] == 0x04); // IPv4 or IPv6
assert_eq!(n, 4 + 4 * (buf[3] as usize) + 2);
let message = vec![0x05, 0x00, 0x00, 0x01, 0, 0, 0, 0, 0, 0];
to_client.write_all(&message).await.expect("write 3");
});
t1.await.expect("task - client");
t2.await.expect("task - proxy");
}
#[cfg(not(miri))]
#[tokio::test]
async fn test_socks_v4_works() {
let proxy_tcp = TcpListener::bind("127.0.0.1:0").await.expect("bind");
let proxy_addr = proxy_tcp.local_addr().expect("local_addr");
let proxy_dst = format!("http://{proxy_addr}").parse().expect("uri");
let target_tcp = TcpListener::bind("127.0.0.1:0").await.expect("bind");
let target_addr = target_tcp.local_addr().expect("local_addr");
let target_dst = format!("http://{target_addr}").parse().expect("uri");
let mut connector = SocksV4::new(proxy_dst, HttpConnector::new());
// Client
//
// Will use `SocksV4` to establish proxy tunnel.
// Will send "Hello World!" to the target and receive "Goodbye!" back.
let t1 = tokio::spawn(async move {
let conn = connector.call(target_dst).await.expect("tunnel");
let mut tcp = conn.into_inner();
tcp.write_all(b"Hello World!").await.expect("write 1");
let mut buf = [0u8; 64];
let n = tcp.read(&mut buf).await.expect("read 1");
assert_eq!(&buf[..n], b"Goodbye!");
});
// Proxy
//
// Will receive CONNECT command from client.
// Will connect to target and success code back to client.
// Will blindly tunnel between client and target.
let t2 = tokio::spawn(async move {
let (mut to_client, _) = proxy_tcp.accept().await.expect("accept");
let mut buf = [0u8; 512];
let [p1, p2] = target_addr.port().to_be_bytes();
let [ip1, ip2, ip3, ip4] = [127, 0, 0, 1];
let message = [4, 0x01, p1, p2, ip1, ip2, ip3, ip4, 0, 0];
let n = to_client.read(&mut buf).await.expect("read");
assert_eq!(&buf[..n], message);
let mut to_target = TcpStream::connect(target_addr).await.expect("connect");
let message = [0, 90, p1, p2, ip1, ip2, ip3, ip4];
to_client.write_all(&message).await.expect("write");
let (from_client, from_target) =
tokio::io::copy_bidirectional(&mut to_client, &mut to_target)
.await
.expect("proxy");
assert_eq!(from_client, 12);
assert_eq!(from_target, 8)
});
// Target server
//
// Will accept connection from proxy server
// Will receive "Hello World!" from the client and return "Goodbye!"
let t3 = tokio::spawn(async move {
let (mut io, _) = target_tcp.accept().await.expect("accept");
let mut buf = [0u8; 64];
let n = io.read(&mut buf).await.expect("read 1");
assert_eq!(&buf[..n], b"Hello World!");
io.write_all(b"Goodbye!").await.expect("write 1");
});
t1.await.expect("task - client");
t2.await.expect("task - proxy");
t3.await.expect("task - target");
}
#[cfg(not(miri))]
#[tokio::test]
async fn test_socks_v5_optimistic_works() {
let proxy_tcp = TcpListener::bind("127.0.0.1:0").await.expect("bind");
let proxy_addr = proxy_tcp.local_addr().expect("local_addr");
let proxy_dst = format!("http://{proxy_addr}").parse().expect("uri");
let target_addr = std::net::SocketAddr::new([127, 0, 0, 1].into(), 1234);
let target_dst = format!("http://{target_addr}").parse().expect("uri");
let mut connector = SocksV5::new(proxy_dst, HttpConnector::new())
.with_auth("ABC".into(), "XYZ".into())
.send_optimistically(true);
// Client
//
// Will use `SocksV5` to establish proxy tunnel.
// Will send "Hello World!" to the target and receive "Goodbye!" back.
let t1 = tokio::spawn(async move {
let _ = connector.call(target_dst).await.expect("tunnel");
});
// Proxy
//
// Will receive SOCKS handshake from client.
// Will connect to target and success code back to client.
// Will blindly tunnel between client and target.
let t2 = tokio::spawn(async move {
let (mut to_client, _) = proxy_tcp.accept().await.expect("accept");
let [p1, p2] = target_addr.port().to_be_bytes();
let mut buf = [0; 22];
let request = vec![
5, 1, 2, // Negotiation
1, 3, 65, 66, 67, 3, 88, 89, 90, // Auth ("ABC"/"XYZ")
5, 1, 0, 1, 127, 0, 0, 1, p1, p2, // Reply
];
let response = vec![
5, 2, // Negotiation,
1, 0, // Auth,
5, 0, 0, 1, 127, 0, 0, 1, p1, p2, // Reply
];
// Accept all handshake messages
to_client.read_exact(&mut buf).await.expect("read");
assert_eq!(request.as_slice(), buf);
// Send all handshake messages back
to_client
.write_all(response.as_slice())
.await
.expect("write");
to_client.flush().await.expect("flush");
});
t1.await.expect("task - client");
t2.await.expect("task - proxy");
}
|
