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
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
#![feature(test)]
#![feature(weak_into_raw)]
#[cfg(feature = "profiler")]
extern crate cpuprofiler;
#[cfg(feature = "profiler")]
use cpuprofiler::PROFILER;
mod configuration;
mod platform;
mod wireguard;
use log;
use daemonize::Daemonize;
use std::env;
use std::process::exit;
use std::thread;
use configuration::Configuration;
use platform::tun::{PlatformTun, Status};
use platform::uapi::{BindUAPI, PlatformUAPI};
use platform::*;
use wireguard::WireGuard;
#[cfg(feature = "profiler")]
fn profiler_stop() {
println!("Stopping profiler");
PROFILER.lock().unwrap().stop().unwrap();
}
#[cfg(not(feature = "profiler"))]
fn profiler_stop() {}
#[cfg(feature = "profiler")]
fn profiler_start(name: &str) {
use std::path::Path;
// find first available path to save profiler output
let mut n = 0;
loop {
let path = format!("./{}-{}.profile", name, n);
if !Path::new(path.as_str()).exists() {
println!("Starting profiler: {}", path);
PROFILER.lock().unwrap().start(path).unwrap();
break;
};
n += 1;
}
}
fn main() {
// parse command line arguments
let mut name = None;
let mut drop_privileges = true;
let mut foreground = false;
let mut args = env::args();
args.next(); // skip path (argv[0])
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 (mut 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");
log::info!("starting {} wireguard device", name);
// drop privileges
if drop_privileges {}
// start profiler (if enabled)
#[cfg(feature = "profiler")]
profiler_start(name.as_str());
// create WireGuard device
let wg: WireGuard<plt::Tun, plt::UDP> = WireGuard::new(writer);
// add all Tun readers
while let Some(reader) = readers.pop() {
wg.add_tun_reader(reader);
}
// wrap in configuration interface
let cfg = configuration::WireGuardConfig::new(wg.clone());
// 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);
profiler_stop();
exit(0);
}
Ok(tun::TunEvent::Up(mtu)) => {
log::info!("Tun up (mtu = {})", mtu);
let _ = cfg.up(mtu); // TODO: handle
}
Ok(tun::TunEvent::Down) => {
log::info!("Tun down");
cfg.down();
}
}
});
}
// start UAPI server
thread::spawn(move || loop {
// accept and handle UAPI config connections
match uapi.connect() {
Ok(mut stream) => {
let cfg = cfg.clone();
thread::spawn(move || {
configuration::uapi::handle(&mut stream, &cfg);
});
}
Err(err) => {
log::info!("UAPI connection error: {}", err);
profiler_stop();
exit(0);
}
}
});
// block until all tun readers closed
wg.wait();
profiler_stop();
}
|
