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|
#![feature(test)]
#![allow(dead_code)]
use log;
use daemonize::Daemonize;
use std::env;
use std::process::exit;
use std::thread;
mod configuration;
mod platform;
mod wireguard;
use configuration::Configuration;
use platform::tun::{PlatformTun, Status};
use platform::uapi::{BindUAPI, PlatformUAPI};
use platform::*;
fn main() {
// parse commandline arguments
let mut name = None;
let mut drop_privileges = true;
let mut foreground = false;
let mut args = env::args();
args.next(); // skip path
for arg in args {
match arg.as_str() {
"--foreground" | "-f" => {
foreground = true;
}
"--root" => {
drop_privileges = false;
}
dev => name = Some(dev.to_owned()),
}
}
// unwrap device name
let name = match name {
None => {
eprintln!("No device name supplied");
exit(-1);
}
Some(name) => name,
};
// create UAPI socket
let uapi = plt::UAPI::bind(name.as_str()).unwrap_or_else(|e| {
eprintln!("Failed to create UAPI listener: {}", e);
exit(-2);
});
// create TUN device
let (readers, writer, status) = plt::Tun::create(name.as_str()).unwrap_or_else(|e| {
eprintln!("Failed to create TUN device: {}", e);
exit(-3);
});
// daemonize
if !foreground {
let daemonize = Daemonize::new()
.pid_file(format!("/tmp/wgrs-{}.pid", name))
.chown_pid_file(true)
.working_directory("/tmp")
.user("nobody")
.group("daemon")
.umask(0o777);
daemonize.start().expect("Failed to daemonize");
}
// start logging
env_logger::builder()
.try_init()
.expect("Failed to initialize event logger");
// drop privileges
if drop_privileges {}
// create WireGuard device
let wg: wireguard::Wireguard<plt::Tun, plt::UDP> = wireguard::Wireguard::new(readers, writer);
// wrap in configuration interface
let cfg = configuration::WireguardConfig::new(wg);
// start Tun event thread
{
let cfg = cfg.clone();
let mut status = status;
thread::spawn(move || loop {
match status.event() {
Err(e) => {
log::info!("Tun device error {}", e);
exit(0);
}
Ok(tun::TunEvent::Up(mtu)) => {
log::info!("Tun up (mtu = {})", mtu);
// bring the wireguard device up
cfg.up(mtu);
// start listening on UDP
let _ = cfg
.start_listener()
.map_err(|e| log::info!("Failed to start UDP listener: {}", e));
}
Ok(tun::TunEvent::Down) => {
log::info!("Tun down");
// set wireguard device down
cfg.down();
// close UDP listener
let _ = cfg
.stop_listener()
.map_err(|e| log::info!("Failed to stop UDP listener {}", e));
}
}
});
}
// start UAPI server
loop {
match uapi.connect() {
Ok(mut stream) => {
let cfg = cfg.clone();
thread::spawn(move || {
configuration::uapi::handle(&mut stream, &cfg);
});
}
Err(err) => {
log::info!("UAPI error: {}", err);
break;
}
}
}
}
|
