|
|
|
use interprocess::local_socket::{LocalSocketListener, LocalSocketStream};
|
|
|
|
use std::{
|
|
|
|
env,
|
|
|
|
error::Error,
|
|
|
|
fs,
|
|
|
|
io::{self, prelude::*, BufReader},
|
|
|
|
path::Path,
|
|
|
|
process::{exit, id, Command, Stdio},
|
|
|
|
};
|
|
|
|
use sysinfo::{ProcessExt, System, SystemExt};
|
|
|
|
|
|
|
|
fn main() -> Result<(), Box<dyn Error>> {
|
|
|
|
env::set_var("RUST_LOG", "swhks=trace");
|
|
|
|
env_logger::init();
|
|
|
|
|
|
|
|
let pidfile: String = String::from("/tmp/swhkc.pid");
|
|
|
|
let sockfile: String = String::from("/tmp/swhkd.sock");
|
|
|
|
|
|
|
|
if Path::new(&pidfile).exists() {
|
|
|
|
log::trace!("Reading {} file and checking for running instances.", pidfile);
|
|
|
|
let swhkd_pid = match fs::read_to_string(&pidfile) {
|
|
|
|
Ok(swhkd_pid) => swhkd_pid,
|
|
|
|
Err(e) => {
|
|
|
|
log::error!("Unable to read {} to check all running instances", e);
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
};
|
|
|
|
log::debug!("Previous PID: {}", swhkd_pid);
|
|
|
|
|
|
|
|
let mut sys = System::new_all();
|
|
|
|
sys.refresh_all();
|
|
|
|
for (pid, process) in sys.processes() {
|
|
|
|
if pid.to_string() == swhkd_pid {
|
|
|
|
if process.exe() == env::current_exe().unwrap() {
|
|
|
|
log::error!("Server is already running!");
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if Path::new(&sockfile).exists() {
|
|
|
|
log::trace!("Sockfile exists, attempting to remove it.");
|
|
|
|
match fs::remove_file(&sockfile) {
|
|
|
|
Ok(_) => {
|
|
|
|
log::debug!("Removed old socket file");
|
|
|
|
}
|
|
|
|
Err(e) => {
|
|
|
|
log::error!("Error removeing the socket file!: {}", e);
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
};
|
|
|
|
}
|
|
|
|
|
|
|
|
match fs::write(&pidfile, id().to_string()) {
|
|
|
|
Ok(_) => {}
|
|
|
|
Err(e) => {
|
|
|
|
log::error!("Unable to write to {}: {}", pidfile, e);
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fn handle_error(connection: io::Result<LocalSocketStream>) -> Option<LocalSocketStream> {
|
|
|
|
connection.map_err(|error| log::error!("Incoming connection failed: {}", error)).ok()
|
|
|
|
}
|
|
|
|
|
|
|
|
fn run_system_command(command: &String) -> () {
|
|
|
|
match Command::new("sh")
|
|
|
|
.arg("-c")
|
|
|
|
.arg(command)
|
|
|
|
.stdin(Stdio::null())
|
|
|
|
.stdout(Stdio::null())
|
|
|
|
.stderr(Stdio::null())
|
|
|
|
.spawn()
|
|
|
|
{
|
|
|
|
Ok(_) => {}
|
|
|
|
Err(e) => {
|
|
|
|
log::error!("Failed to execute {}", command);
|
|
|
|
log::error!("Error, {}", e);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
let listener = LocalSocketListener::bind(sockfile)?;
|
|
|
|
for conn in listener.incoming().filter_map(handle_error) {
|
|
|
|
let mut conn = BufReader::new(conn);
|
|
|
|
let mut buffer = String::new();
|
|
|
|
conn.read_line(&mut buffer)?;
|
|
|
|
log::debug!("Recieved command : {}", buffer);
|
|
|
|
run_system_command(&buffer);
|
|
|
|
}
|
|
|
|
Ok(())
|
|
|
|
}
|