server/kiwi.js

   1 var fs          = require('fs'),
   2     _           = require('lodash'),
   3     util        = require('util'),
   4     WebListener = require('./weblistener.js'),
   5     config      = require('./configuration.js'),
   6     rehash      = require('./rehash.js'),
   7     modules     = require('./modules.js'),
   8     Identd      = require('./identd.js');
   9
  10
  11
  12 process.chdir(__dirname + '/../');
  13 config.loadConfig();
  14
  15
  16 // If we're not running in the forground and we have a log file.. switch
  17 // console.log to output to a file
  18 if (process.argv.indexOf('-f') === -1 && global.config && global.config.log) {
  19     (function () {
  20         var log_file_name = global.config.log;
  21
  22         if (log_file_name[0] !== '/') {
  23             log_file_name = __dirname + '/../' + log_file_name;
  24         }
  25
  26
  27
  28         console.log = function() {
  29             var logfile = fs.openSync(log_file_name, 'a'),
  30                 out;
  31
  32             out = util.format.apply(util, arguments);
  33
  34             // Make sure we out somthing to log and we have an open file
  35             if (!out || !logfile) return;
  36
  37             out += '\n';
  38             fs.writeSync(logfile, out, null);
  39
  40             fs.closeSync(logfile);
  41         };
  42     })();
  43 }
  44
  45
  46
  47 // Make sure we have a valid config file and at least 1 server
  48 if (!global.config || Object.keys(global.config).length === 0) {
  49     console.log('Couldn\'t find a valid config.js file (Did you copy the config.example.js file yet?)');
  50     process.exit(1);
  51 }
  52
  53 if ((!global.config.servers) || (global.config.servers.length < 1)) {
  54     console.log('No servers defined in config file');
  55     process.exit(2);
  56 }
  57
  58
  59
  60
  61 // Create a plugin interface
  62 global.modules = new modules.Publisher();
  63
  64 // Register as the active interface
  65 modules.registerPublisher(global.modules);
  66
  67 // Load any modules in the config
  68 if (global.config.module_dir) {
  69     (global.config.modules || []).forEach(function (module_name) {
  70         if (modules.load(module_name)) {
  71             console.log('Module ' + module_name + ' loaded successfuly');
  72         } else {
  73             console.log('Module ' + module_name + ' failed to load');
  74         }
  75     });
  76 }
  77
  78
  79
  80
  81 // Holder for all the connected clients
  82 global.clients = {
  83     clients: Object.create(null),
  84     addresses: Object.create(null),
  85
  86     // Local and foriegn port pairs for identd lookups
  87     // {'65483_6667': client_obj, '54356_6697': client_obj}
  88     port_pairs: {},
  89
  90     add: function (client) {
  91         this.clients[client.hash] = client;
  92         if (typeof this.addresses[client.real_address] === 'undefined') {
  93             this.addresses[client.real_address] = Object.create(null);
  94         }
  95         this.addresses[client.real_address][client.hash] = client;
  96     },
  97
  98     remove: function (client) {
  99         if (typeof this.clients[client.hash] !== 'undefined') {
 100             delete this.clients[client.hash];
 101             delete this.addresses[client.real_address][client.hash];
 102             if (Object.keys(this.addresses[client.real_address]).length < 1) {
 103                 delete this.addresses[client.real_address];
 104             }
 105         }
 106     },
 107
 108     numOnAddress: function (addr) {
 109         if (typeof this.addresses[addr] !== 'undefined') {
 110             return Object.keys(this.addresses[addr]).length;
 111         } else {
 112             return 0;
 113         }
 114     }
 115 };
 116
 117 global.servers = {
 118     servers: Object.create(null),
 119
 120     addConnection: function (connection) {
 121         var host = connection.irc_host.hostname;
 122         if (!this.servers[host]) {
 123             this.servers[host] = [];
 124         }
 125         this.servers[host].push(connection);
 126     },
 127
 128     removeConnection: function (connection) {
 129         var host = connection.irc_host.hostname
 130         if (this.servers[host]) {
 131             this.servers[host] = _.without(this.servers[host], connection);
 132             if (this.servers[host].length === 0) {
 133                 delete this.servers[host];
 134             }
 135         }
 136     },
 137
 138     numOnHost: function (host) {
 139         if (this.servers[host]) {
 140             return this.servers[host].length;
 141         } else {
 142             return 0;
 143         }
 144     }
 145 };
 146
 147
 148
 149 config.on('loaded', function () {
 150     for (var client in global.clients.clients) {
 151         global.clients.clients[client].sendKiwiCommand('reconfig');
 152     }
 153 });
 154
 155
 156
 157 /*
 158  * Identd server
 159  */
 160 if (global.config.identd && global.config.identd.enabled) {
 161     var identd_resolve_user = function(port_here, port_there) {
 162         var key = port_here.toString() + '_' + port_there.toString();
 163
 164         if (typeof global.clients.port_pairs[key] == 'undefined') {
 165             return;
 166         }
 167
 168         return global.clients.port_pairs[key].username;
 169     };
 170
 171     var identd_server = new Identd({
 172         bind_addr: global.config.identd.address,
 173         bind_port: global.config.identd.port,
 174         user_id: identd_resolve_user
 175     });
 176
 177     identd_server.start();
 178 }
 179
 180
 181
 182
 183 /*
 184  * Web listeners
 185  */
 186
 187
 188 // Start up a weblistener for each found in the config
 189 _.each(global.config.servers, function (server) {
 190     var wl = new WebListener(server, global.config.transports);
 191
 192     wl.on('connection', function (client) {
 193         clients.add(client);
 194     });
 195
 196     wl.on('client_dispose', function (client) {
 197         clients.remove(client);
 198     });
 199
 200     wl.on('listening', function () {
 201         console.log('Listening on %s:%s %s SSL', server.address, server.port, (server.ssl ? 'with' : 'without'));
 202         webListenerRunning();
 203     });
 204
 205     wl.on('error', function (err) {
 206         console.log('Error listening on %s:%s: %s', server.address, server.port, err.code);
 207         // TODO: This should probably be refactored. ^JA
 208         webListenerRunning();
 209     });
 210 });
 211
 212 // Once all the listeners are listening, set the processes UID/GID
 213 var num_listening = 0;
 214 function webListenerRunning() {
 215     num_listening++;
 216     if (num_listening === global.config.servers.length) {
 217         setProcessUid();
 218     }
 219 }
 220
 221
 222
 223
 224 /*
 225  * Process settings
 226  */
 227
 228 // Set process title
 229 process.title = 'kiwiirc';
 230
 231 // Change UID/GID
 232 function setProcessUid() {
 233     if ((global.config.group) && (global.config.group !== '')) {
 234         process.setgid(global.config.group);
 235     }
 236     if ((global.config.user) && (global.config.user !== '')) {
 237         process.setuid(global.config.user);
 238     }
 239 }
 240
 241
 242 // Make sure Kiwi doesn't simply quit on an exception
 243 process.on('uncaughtException', function (e) {
 244     console.log('[Uncaught exception] ' + e);
 245     console.log(e.stack);
 246 });
 247
 248
 249 process.on('SIGUSR1', function() {
 250     if (config.loadConfig()) {
 251         console.log('New config file loaded');
 252     } else {
 253         console.log("No new config file was loaded");
 254     }
 255 });
 256
 257
 258 process.on('SIGUSR2', function() {
 259     console.log('Connected clients: ' + _.size(global.clients.clients).toString());
 260     console.log('Num. remote hosts: ' + _.size(global.clients.addresses).toString());
 261 });
 262
 263
 264 /*
 265  * Listen for runtime commands
 266  */
 267
 268 process.stdin.resume();
 269 process.stdin.on('data', function (buffered) {
 270     var data = buffered.toString().trim();
 271
 272     switch (data) {
 273         case 'stats':
 274             console.log('Connected clients: ' + _.size(global.clients.clients).toString());
 275             console.log('Num. remote hosts: ' + _.size(global.clients.addresses).toString());
 276             break;
 277
 278         case 'reconfig':
 279             if (config.loadConfig()) {
 280                 console.log('New config file loaded');
 281             } else {
 282                 console.log("No new config file was loaded");
 283             }
 284
 285             break;
 286
 287
 288         case 'rehash':
 289             (function () {
 290                 rehash.rehashAll();
 291                 console.log('Rehashed');
 292             })();
 293
 294             break;
 295
 296         default:
 297             console.log('Unrecognised command: ' + data);
 298     }
 299 });