sync/server.js

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var path = require("path");
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var fs = require("fs");
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var express = require("express");
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var Config = require("./config");
var Logger = require("./logger");
var Channel = require("./channel");
var User = require("./user");
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const VERSION = "2.3.0";
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function getIP(req) {
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var raw = req.connection.remoteAddress;
var forward = req.header("x-forwarded-for");
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if(Server.cfg["trust-x-forward"] && forward) {
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var ip = forward.split(",")[0];
Logger.syslog.log("REVPROXY " + raw + " => " + ip);
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return ip;
}
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return raw;
}
function getSocketIP(socket) {
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var raw = socket.handshake.address.address;
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if(Server.cfg["trust-x-forward"]) {
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if(typeof socket.handshake.headers["x-forwarded-for"] == "string") {
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var ip = socket.handshake.headers["x-forwarded-for"]
.split(",")[0];
Logger.syslog.log("REVPROXY " + raw + " => " + ip);
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return ip;
}
}
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return raw;
}
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var Server = {
channels: [],
channelLoaded: function (name) {
for(var i in this.channels) {
if(this.channels[i].canonical_name == name.toLowerCase())
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return true;
}
return false;
},
getChannel: function (name) {
for(var i in this.channels) {
if(this.channels[i].canonical_name == name.toLowerCase())
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return this.channels[i];
}
var c = new Channel(name, this);
this.channels.push(c);
return c;
},
unloadChannel: function(chan) {
if(chan.registered)
chan.saveDump();
chan.playlist.die();
chan.logger.close();
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for(var i in this.channels) {
if(this.channels[i].canonical_name == chan.canonical_name) {
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this.channels.splice(i, 1);
break;
}
}
chan.name = "";
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},
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stats: null,
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app: null,
io: null,
httpserv: null,
ioserv: null,
db: null,
ips: {},
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acp: null,
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httpaccess: null,
logHTTP: function (req, status) {
if(status === undefined)
status = 200;
var ip = req.connection.remoteAddress;
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var ip2 = false;
if(this.cfg["trust-x-forward"])
ip2 = req.header("x-forwarded-for") || req.header("cf-connecting-ip");
var ipstr = !ip2 ? ip : ip + " (X-Forwarded-For " + ip2 + ")";
var url = req.url;
// Remove query
if(url.indexOf("?") != -1)
url = url.substring(0, url.lastIndexOf("?"));
this.httpaccess.log([ipstr, req.method, url, status, req.headers["user-agent"]].join(" "));
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},
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init: function () {
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this.httpaccess = new Logger.Logger("httpaccess.log");
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this.app = express();
// channel path
this.app.get("/r/:channel(*)", function (req, res, next) {
var c = req.params.channel;
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if(!c.match(/^[\w-_]+$/)) {
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res.redirect("/" + c);
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}
else {
this.logHTTP(req);
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res.sendfile(__dirname + "/www/channel.html");
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}
}.bind(this));
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// api path
this.api = require("./api")(this);
this.app.get("/api/:apireq(*)", function (req, res, next) {
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this.logHTTP(req);
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this.api.handle(req.url.substring(5), req, res);
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}.bind(this));
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this.app.get("/", function (req, res, next) {
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this.logHTTP(req);
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res.sendfile(__dirname + "/www/index.html");
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}.bind(this));
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// default path
this.app.get("/:thing(*)", function (req, res, next) {
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var opts = {
root: __dirname + "/www",
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maxAge: this.cfg["asset-cache-ttl"]
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}
res.sendfile(req.params.thing, opts, function (err) {
if(err) {
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this.logHTTP(req, err.status);
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// Damn path traversal attacks
if(req.params.thing.indexOf("%2e") != -1) {
res.send("Don't try that again, I'll ban you");
Logger.syslog.log("WARNING: Attempted path "+
"traversal from /" + getIP(req));
Logger.syslog.log("URL: " + req.url);
}
// Something actually went wrong
else {
// Status codes over 500 are server errors
if(err.status >= 500)
Logger.errlog.log(err);
res.send(err.status);
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}
}
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else {
this.logHTTP(req);
}
}.bind(this));
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}.bind(this));
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// fallback
this.app.use(function (err, req, res, next) {
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this.logHTTP(req, err.status);
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if(err.status == 404) {
res.send(404);
} else {
next(err);
}
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}.bind(this));
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// bind servers
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this.httpserv = this.app.listen(Server.cfg["web-port"],
Server.cfg["express-host"]);
this.ioserv = express().listen(Server.cfg["io-port"],
Server.cfg["express-host"]);
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// init socket.io
this.io = require("socket.io").listen(this.ioserv);
this.io.set("log level", 1);
this.io.sockets.on("connection", function (socket) {
var ip = getSocketIP(socket);
socket._ip = ip;
if(this.db.checkGlobalBan(ip)) {
Logger.syslog.log("Disconnecting " + ip + " - gbanned");
socket.emit("kick", {
reason: "You're globally banned."
});
socket.disconnect(true);
return;
}
socket.on("disconnect", function () {
this.ips[ip]--;
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}.bind(this));
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if(!(ip in this.ips))
this.ips[ip] = 0;
this.ips[ip]++;
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if(this.ips[ip] > Server.cfg["ip-connection-limit"]) {
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socket.emit("kick", {
reason: "Too many connections from your IP address"
});
socket.disconnect(true);
return;
}
// finally a valid user
Logger.syslog.log("Accepted socket from /" + socket._ip);
new User(socket, this);
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}.bind(this));
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// init database
this.db = require("./database");
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this.db.setup(Server.cfg);
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this.db.init();
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// init ACP
this.acp = require("./acp")(this);
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// init stats
this.stats = require("./stats")(this);
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// init media retriever
this.infogetter = require("./get-info")(this);
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},
shutdown: function () {
Logger.syslog.log("Unloading channels");
for(var i in this.channels) {
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if(this.channels[i].registered) {
Logger.syslog.log("Saving /r/" + this.channels[i].name);
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this.channels[i].saveDump();
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}
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}
Logger.syslog.log("Goodbye");
process.exit(0);
}
};
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Logger.syslog.log("Starting CyTube v" + VERSION);
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fs.exists("chanlogs", function (exists) {
exists || fs.mkdir("chanlogs");
});
fs.exists("chandump", function (exists) {
exists || fs.mkdir("chandump");
});
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Config.load(Server, "cfg.json", function () {
Server.init();
if(!Server.cfg["debug"]) {
process.on("uncaughtException", function (err) {
Logger.errlog.log("[SEVERE] Uncaught Exception: " + err);
Logger.errlog.log(err.stack);
});
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process.on("SIGINT", function () {
Server.shutdown();
});
}
});