Differential D11143 Diff 26755 support/aphlict/server/aphlict_server.js

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support/aphlict/server/aphlict_server.js

/**
* Notification server. Launch with:
*
* sudo node aphlict_server.js --user=aphlict
*
* You can also specify `port`, `admin`, `host` and `log`.
*/

var JX = require('./lib/javelin').JX;		var JX = require('./lib/javelin').JX;
		var http = require('http');
		var util = require('util');
		var WebSocket = require('ws');

		joshuaspenceUnsubmitted Not Done Inline Actions Maybe we should `try`/`catch` this and provide installation instructions if it is missing. Otherwise, users who blindly update may not understand why Aphlict stopped working. joshuaspence: Maybe we should `try`/`catch` this and provide installation instructions if it is missing.
JX.require('lib/AphlictFlashPolicyServer', __dirname);
JX.require('lib/AphlictListenerList', __dirname);
JX.require('lib/AphlictLog', __dirname);		JX.require('lib/AphlictLog', __dirname);

function parse_command_line_arguments(argv) {		function parse_command_line_arguments(argv) {
var config = {		var config = {
port: 22280,		port: 8080,
admin: 22281,		admin: 8081,
host: '127.0.0.1',		host: '127.0.0.1',
user: null,		user: null,
log: '/var/log/aphlict.log'		log: '/var/log/aphlict.log'
};		};

		joshuaspenceUnsubmitted Not Done Inline Actions Sort of ugly, maybe just `cert` and `key` would suffice. joshuaspence: Sort of ugly, maybe just `cert` and `key` would suffice.
for (var ii = 2; ii < argv.length; ii++) {		for (var ii = 2; ii < argv.length; ii++) {
var arg = argv[ii];		var arg = argv[ii];
var matches = arg.match(/^--([^=]+)=(.*)$/);		var matches = arg.match(/^--([^=]+)=(.*)$/);
if (!matches) {		if (!matches) {
throw new Error("Unknown argument '" + arg + "'!");		throw new Error("Unknown argument '" + arg + "'!");
}		}
if (!(matches[1] in config)) {		if (!(matches[1] in config)) {
throw new Error("Unknown argument '" + matches[1] + "'!");		throw new Error("Unknown argument '" + matches[1] + "'!");
}		}
config[matches[1]] = matches[2];		config[matches[1]] = matches[2];
}		}

config.port = parseInt(config.port, 10);		config.port = parseInt(config.port, 10);
config.admin = parseInt(config.admin, 10);		config.admin = parseInt(config.admin, 10);

return config;		return config;
}		}

var debug = new JX.AphlictLog()		var debug = new JX.AphlictLog()
.addConsole(console);		.addConsole(console);

var clients = new JX.AphlictListenerList();

var config = parse_command_line_arguments(process.argv);		var config = parse_command_line_arguments(process.argv);

if (config.logfile) {		if (config.logfile) {
debug.addLogfile(config.logfile);		debug.addLogfile(config.logfile);
}		}

if (process.getuid() !== 0) {
console.log(
"ERROR: " +
"This server must be run as root because it needs to bind to privileged " +
"port 843 to start a Flash policy server. It will downgrade to run as a " +
"less-privileged user after binding if you pass a user in the command " +
"line arguments with '--user=alincoln'.");
process.exit(1);
}

var net = require('net');
var http = require('http');

process.on('uncaughtException', function(err) {		process.on('uncaughtException', function(err) {
debug.log('\n<<< UNCAUGHT EXCEPTION! >>>\n' + err.stack);		debug.log('\n<<< UNCAUGHT EXCEPTION! >>>\n' + err.stack);

process.exit(1);		process.exit(1);
});		});

new JX.AphlictFlashPolicyServer()		// WEBSOCKETS
.setDebugLog(debug)		var ws = new WebSocket.Server({host: config.host, port: config.port});
.setAccessPort(config.port)
.start();


net.createServer(function(socket) {
var listener = clients.addListener(socket);

debug.log('<%s> Connected from %s',
listener.getDescription(),
socket.remoteAddress);

var buffer = new Buffer([]);
var length = 0;

socket.on('data', function(data) {
buffer = Buffer.concat([buffer, new Buffer(data)]);

while (buffer.length) {		ws.on('connection', function(ws) {
if (!length) {		function log() {
length = buffer.readUInt16BE(0);		debug.log(
buffer = buffer.slice(2);		util.format('<%s:%d>', ws._socket.remoteAddress, ws._socket.remotePort) +
		' ' +
		util.format.apply(null, arguments));
}		}

if (buffer.length < length) {		log('Connected.');
// We need to wait for the rest of the data.
return;
}

var message;		ws.on('message', function(data) {
try {		try {
message = JSON.parse(buffer.toString('utf8', 0, length));		data = JSON.parse(data);
		log('Received data: %s', JSON.stringify(data));
} catch (err) {		} catch (err) {
debug.log('<%s> Received invalid data.', listener.getDescription());		log('Received invalid data: %s', err.message);
continue;
} finally {
buffer = buffer.slice(length);
length = 0;
}		}

		joshuaspenceUnsubmitted Not Done Inline Actions Maybe include `ws._socket.remotePort` as well? joshuaspence: Maybe include `ws._socket.remotePort` as well?
debug.log('<%s> Received data: %s',
listener.getDescription(),
JSON.stringify(message));

switch (message.command) {		switch (message.command) {
case 'subscribe':		case 'subscribe':
debug.log(		debug.log(
'<%s> Subscribed to: %s',		'<%s> Subscribed to: %s',
listener.getDescription(),		listener.getDescription(),
JSON.stringify(message.data));		JSON.stringify(message.data));
listener.subscribe(message.data);		listener.subscribe(message.data);
break;		break;

case 'unsubscribe':		case 'unsubscribe':
debug.log(		debug.log(
'<%s> Unsubscribed from: %s',		'<%s> Unsubscribed from: %s',
listener.getDescription(),		listener.getDescription(),
JSON.stringify(message.data));		JSON.stringify(message.data));
listener.unsubscribe(message.data);		listener.unsubscribe(message.data);
break;		break;

default:		default:
debug.log('<s> Unrecognized command.', listener.getDescription());		debug.log('<s> Unrecognized command.', listener.getDescription());
}		}
}
});		});

socket.on('close', function() {		ws.on('close', function(ws) {
clients.removeListener(listener);		log('Closed.');
debug.log('<%s> Disconnected', listener.getDescription());
});		});

socket.on('timeout', function() {		ws.on('error', function(err) {
debug.log('<%s> Timed Out', listener.getDescription());		log('Error: %s', err.message);
});		});

socket.on('end', function() {
debug.log('<%s> Ended Connection', listener.getDescription());
});

socket.on('error', function(e) {
debug.log('<%s> Error: %s', listener.getDescription(), e);
});		});

}).listen(config.port);		ws.broadcast = function broadcast(data) {
		for (var i in this.clients) {
		this.clients[i].send(data);
var messages_out = 0;		}
var messages_in = 0;		};
var start_time = new Date().getTime();

function transmit(msg) {
var listeners = clients.getListeners().filter(function(client) {
return client.isSubscribedToAny(msg.subscribers);
});

for (var i = 0; i < listeners.length; i++) {		// If we're configured to drop permissions, get rid of them now that we've
var listener = listeners[i];		// bound to the ports we need and opened logfiles.
		if (config.user) {
		process.setuid(config.user);
		}

try {		debug.log('Started Server (PID %d)', process.pid);
listener.writeMessage(msg);

++messages_out;
debug.log('<%s> Wrote Message', listener.getDescription());
} catch (error) {
clients.removeListener(listener);
debug.log('<%s> Write Error: %s', listener.getDescription(), error);
}
}
}

http.createServer(function(request, response) {		http.createServer(function(request, response) {
// Publishing a notification.		// Publishing a notification.
if (request.url == '/') {		if (request.url == '/') {
if (request.method == 'POST') {		if (request.method == 'POST') {
var body = '';		var body = '';

request.on('data', function(data) {		request.on('data', function(data) {
▲ Show 20 Lines • Show All 56 Lines • ▼ Show 20 Lines	request.on('end', function() {
response.end();		response.end();
});		});
} else {		} else {
response.statusCode = 404;		response.statusCode = 404;
response.write('404 Not Found\n');		response.write('404 Not Found\n');
response.end();		response.end();
}		}
}).listen(config.admin, config.host);		}).listen(config.admin, config.host);

// If we're configured to drop permissions, get rid of them now that we've
// bound to the ports we need and opened logfiles.
if (config.user) {
process.setuid(config.user);
}

debug.log('Started Server (PID %d)', process.pid);