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  1. 4
      .gitignore
  2. 6
      Cargo.lock
  3. 20
      Cargo.toml
  4. 201
      LICENSE-APACHE
  5. 25
      LICENSE-MIT
  6. 28
      README.md
  7. 186
      src/main.rs

4
.gitignore vendored
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/target/
**/*.rs.bk
.idea
easier

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Cargo.lock generated
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# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
[[package]]
name = "wireguard-proxy"
version = "0.1.0"

20
Cargo.toml
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[package]
name = "wireguard-proxy"
version = "0.1.0"
authors = ["moparisthebest <admin@moparisthebest.com>"]
description = "Tunnel wireguard (UDP) over TCP/TLS."
repository = "https://code.moparisthebest.com/moparisthebest/wireguard-proxy"
keywords = ["wireguard", "tunnel", "tcp", "udp", "tls"]
license = "MIT/Apache-2.0"
readme = "README.md"
edition = "2018"
include = [
"**/*.rs",
"Cargo.toml",
"LICENSE-*",
"*.md",
]

201
LICENSE-APACHE
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Apache License
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LICENSE-MIT
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Copyright (c) 2019 Travis Burtrum
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28
README.md
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# wireguard-proxy
Server-side daemon to proxy multiple TCP connections to wireguard, client-side implementation coming here soon
Testing with GNU netcat:
- `nc -vulp 51820` listen on udp like wireguard would
- `nc -u 127.0.0.1 51820` connect directly to local udp wireguard port to send/receive data
- `nc -vlp 5555` listen on tcp like wireguard-proxy would
- `nc 127.0.0.1 5555` connect directly to local tcp wireguard-proxy port to send/recieve data
- so to test through wireguard-proxy run first and last command while it's running, type in both places
# License
This project is licensed under either of
* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
http://www.apache.org/licenses/LICENSE-2.0)
* MIT license ([LICENSE-MIT](LICENSE-MIT) or
http://opensource.org/licenses/MIT)
at your option.
### Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in die by you, as defined in the Apache-2.0 license, shall be
dual licensed as above, without any additional terms or conditions.

186
src/main.rs
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use std::io::{Read, Write};
use std::net::{TcpListener, TcpStream, UdpSocket};
use std::time::Duration;
use std::env;
use std::str::FromStr;
use std::sync::Arc;
use std::thread;
struct Server {
udp_target: String,
udp_host: String,
udp_low_port: u16,
udp_high_port: u16,
socket_timeout: Option<Duration>,
}
unsafe impl Send for Server {}
impl Server {
fn new(
udp_target: String,
udp_host: String,
udp_low_port: u16,
udp_high_port: u16,
secs: u64,
) -> Server {
Server {
udp_target,
udp_host,
udp_low_port,
udp_high_port,
socket_timeout: match secs {
0 => None,
x => Some(Duration::from_secs(x)),
},
}
}
fn handle_client(&self, mut tcp_stream: TcpStream) -> std::io::Result<usize> {
tcp_stream.set_read_timeout(self.socket_timeout)?;
let mut port = self.udp_low_port;
let udp_socket = loop {
match UdpSocket::bind((&self.udp_host[..], port)) {
Ok(sock) => break sock,
Err(_) => {
port += 1;
if port > self.udp_high_port {
panic!("cannot find free port, increase range?");
}
}
}
};
udp_socket.set_read_timeout(self.socket_timeout)?;
udp_socket.connect(&self.udp_target)?;
let udp_socket_clone = udp_socket.try_clone().expect("clone udp_socket failed");
let mut tcp_stream_clone = tcp_stream.try_clone().expect("clone tcp_stream failed");
thread::spawn(move || {
let mut buf = [0u8; 2048];
loop {
match udp_socket_clone.recv(&mut buf) {
Ok(len) => {
println!("udp got len: {}", len);
tcp_stream_clone
.write(&buf[..len])
.expect("cannot write to tcp_clone");
}
Err(e) => {
println!("recv function failed: {:?}", e);
break;
}
}
}
});
let mut buf = [0u8; 2048];
loop {
match tcp_stream.read(&mut buf) {
Ok(len) => {
println!("tcp got len: {}", len);
udp_socket.send(&buf[..len])?;
}
Err(e) => {
println!("Unable to read stream: {}", e);
break;
}
}
}
Ok(0)
}
}
struct Args<'a> {
args: &'a Vec<String>,
}
impl<'a> Args<'a> {
fn new(args: &'a Vec<String>) -> Args {
Args { args }
}
fn get_str(&self, index: usize, def: &'a str) -> &'a str {
match self.args.get(index) {
Some(ret) => ret,
None => def,
}
}
fn get<T: FromStr>(&self, index: usize, def: T) -> T {
match self.args.get(index) {
Some(ret) => match ret.parse::<T>() {
Ok(ret) => ret,
Err(_) => def, // or panic
},
None => def,
}
}
}
fn main() {
let raw_args = env::args().collect();
let args = Args::new(&raw_args);
if args.get_str(1, "").contains("-h") {
println!(
"usage: {} [-h] [host, 127.0.0.1:5555] [udp_target, 127.0.0.1:51820] [udp_bind_host_range, 127.0.0.1:30000-40000] [socket_timeout, 0]",
args.get_str(0, "curl_bash")
);
return;
}
let host = args.get_str(1, "127.0.0.1:5555");
let udp_bind_host_range_str = args.get_str(3, "127.0.0.1:30000-40000");
let mut udp_bind_host_range = udp_bind_host_range_str.split(":");
let udp_host = udp_bind_host_range
.next()
.expect("udp_bind_host_range host invalid");
let mut udp_ports = udp_bind_host_range
.next()
.expect("udp_bind_host_range port range invalid")
.split("-");
let udp_low_port = udp_ports
.next()
.expect("udp_bind_host_range low port invalid")
.trim()
.parse::<u16>()
.expect("udp_bind_host_range low port invalid");
let udp_high_port = udp_ports
.next()
.expect("udp_bind_host_range low port invalid")
.trim()
.parse::<u16>()
.expect("udp_bind_host_range low port invalid");
let server = Arc::new(Server::new(
args.get_str(2, "127.0.0.1:51820").to_owned(),
udp_host.to_string(),
udp_low_port,
udp_high_port,
args.get(4, 0),
));
println!(
"udp_target: {}, udp_bind_host_range: {}, socket_timeout: {:?}",
server.udp_target, udp_bind_host_range_str, server.socket_timeout,
);
let listener = TcpListener::bind(&host).unwrap();
println!("Listening for connections on {}", &host);
for stream in listener.incoming() {
match stream {
Ok(stream) => {
let server = server.clone();
thread::spawn(move || {
server
.handle_client(stream)
.expect("error handling connection")
});
}
Err(e) => {
println!("Unable to connect: {}", e);
}
}
}
}
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