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#!/usr/bin/env node
const fs=require("fs");
const net=require("net");
const https=require("https");
const WebSocket=require("uws");
const PORT=29546;
const upstream={
host: "localhost",
port: 29536
};
let httpsConfig=null;
if(process.argv.length>=4){
console.log("Reading keys for https");
httpsConfig={
key: fs.readFileSync(process.argv[2]),
cert: fs.readFileSync(process.argv[3]),
};
}
if(process.getuid()==0){
console.log(`Old uid: ${process.getuid()}, old gid: ${process.getgid()}; setting to nobody...`);
process.setgid("nobody");
process.setuid("nobody");
console.log(`New uid: ${process.getuid()}, new gid: ${process.getgid()}`);
}
let httpsServer,wsServer;
if(httpsConfig){
httpsServer=https.createServer(httpsConfig,(req,res)=>{
console.log("Got request in httpsServer?");
// req.socket.end(); // ?
});
wsServer=new WebSocket.Server({server:httpsServer},()=>{
console.log(`Bound websocket server to https server`);
});
} else {
wsServer=new WebSocket.Server({port:PORT},()=>{
console.log(`Listening for websocket http requests on port ${PORT}`);
});
}
wsServer.on("connection",(sock)=>{
let netconn=null;
let buffer=[];
let linebuf="";
netconn=net.connect(upstream.port,upstream.host,()=>{
for(const item of buffer){
netconn.write(item+"\n");
}
buffer=[];
});
netconn.on("close",()=>{
sock.close();
});
netconn.on("data",(data)=>{
linebuf+=data;
let idx;
while((idx=linebuf.indexOf("\n"))!=-1){
sock.send(linebuf.slice(0,idx));
linebuf=linebuf.slice(idx+1);
}
});
sock.on("close",()=>{
netconn.end();
});
sock.on("message",(data)=>{
if(netconn.connecting)buffer.push(data);
else netconn.write(data+"\n");
});
});
if(httpsConfig){
httpsServer.listen(PORT,()=>{
console.log(`HTTPS server bound on port ${PORT}`);
});
}
process.on("SIGINT",()=>{
console.log("Closing server...");
wsServer.close();
if(httpsConfig)httpsServer.close();
});
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