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| 1 | <?php |
| 2 | /** |
| 3 | * |
| 4 | * This file is part of the phpBB Forum Software package. |
| 5 | * |
| 6 | * @copyright (c) phpBB Limited <https://www.phpbb.com> |
| 7 | * @license GNU General Public License, version 2 (GPL-2.0) |
| 8 | * |
| 9 | * For full copyright and license information, please see |
| 10 | * the docs/CREDITS.txt file. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | /** |
| 15 | * @ignore |
| 16 | */ |
| 17 | if (!defined('IN_PHPBB')) |
| 18 | { |
| 19 | exit; |
| 20 | } |
| 21 | |
| 22 | /** |
| 23 | * |
| 24 | * Jabber class from Flyspray project |
| 25 | * |
| 26 | * @version class.jabber2.php 1595 2008-09-19 (0.9.9) |
| 27 | * @copyright 2006 Flyspray.org |
| 28 | * @author Florian Schmitz (floele) |
| 29 | * |
| 30 | * Only slightly modified by Acyd Burn |
| 31 | */ |
| 32 | class jabber |
| 33 | { |
| 34 | var $connection = null; |
| 35 | var $session = array(); |
| 36 | var $timeout = 10; |
| 37 | |
| 38 | var $server; |
| 39 | var $connect_server; |
| 40 | var $port; |
| 41 | var $username; |
| 42 | var $password; |
| 43 | var $use_ssl; |
| 44 | var $verify_peer; |
| 45 | var $verify_peer_name; |
| 46 | var $allow_self_signed; |
| 47 | var $resource = 'functions_jabber.phpbb.php'; |
| 48 | |
| 49 | var $enable_logging; |
| 50 | var $log_array; |
| 51 | |
| 52 | var $features = array(); |
| 53 | |
| 54 | /** @var string Stream close handshake */ |
| 55 | private const STREAM_CLOSE_HANDSHAKE = '</stream:stream>'; |
| 56 | |
| 57 | /** |
| 58 | * Constructor |
| 59 | * |
| 60 | * @param string $server Jabber server |
| 61 | * @param int $port Jabber server port |
| 62 | * @param string $username Jabber username or JID |
| 63 | * @param string $password Jabber password |
| 64 | * @param bool $use_ssl Use ssl |
| 65 | * @param bool $verify_peer Verify SSL certificate |
| 66 | * @param bool $verify_peer_name Verify Jabber peer name |
| 67 | * @param bool $allow_self_signed Allow self signed certificates |
| 68 | */ |
| 69 | function __construct($server, $port, $username, $password, $use_ssl = false, $verify_peer = true, $verify_peer_name = true, $allow_self_signed = false) |
| 70 | { |
| 71 | $this->connect_server = ($server) ? $server : 'localhost'; |
| 72 | $this->port = ($port) ? $port : 5222; |
| 73 | |
| 74 | // Get the server and the username |
| 75 | if (strpos($username, '@') === false) |
| 76 | { |
| 77 | $this->server = $this->connect_server; |
| 78 | $this->username = $username; |
| 79 | } |
| 80 | else |
| 81 | { |
| 82 | $jid = explode('@', $username, 2); |
| 83 | |
| 84 | $this->username = $jid[0]; |
| 85 | $this->server = $jid[1]; |
| 86 | } |
| 87 | |
| 88 | $this->password = $password; |
| 89 | $this->use_ssl = ($use_ssl && self::can_use_ssl()) ? true : false; |
| 90 | $this->verify_peer = $verify_peer; |
| 91 | $this->verify_peer_name = $verify_peer_name; |
| 92 | $this->allow_self_signed = $allow_self_signed; |
| 93 | |
| 94 | // Change port if we use SSL |
| 95 | if ($this->port == 5222 && $this->use_ssl) |
| 96 | { |
| 97 | $this->port = 5223; |
| 98 | } |
| 99 | |
| 100 | $this->enable_logging = true; |
| 101 | $this->log_array = array(); |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Able to use the SSL functionality? |
| 106 | */ |
| 107 | public static function can_use_ssl() |
| 108 | { |
| 109 | return @extension_loaded('openssl'); |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Able to use TLS? |
| 114 | */ |
| 115 | public static function can_use_tls() |
| 116 | { |
| 117 | if (!@extension_loaded('openssl') || !function_exists('stream_socket_enable_crypto') || !function_exists('stream_get_meta_data') || !function_exists('stream_set_blocking') || !function_exists('stream_get_wrappers')) |
| 118 | { |
| 119 | return false; |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Make sure the encryption stream is supported |
| 124 | * Also seem to work without the crypto stream if correctly compiled |
| 125 | |
| 126 | $streams = stream_get_wrappers(); |
| 127 | |
| 128 | if (!in_array('streams.crypto', $streams)) |
| 129 | { |
| 130 | return false; |
| 131 | } |
| 132 | */ |
| 133 | |
| 134 | return true; |
| 135 | } |
| 136 | |
| 137 | /** |
| 138 | * Sets the resource which is used. No validation is done here, only escaping. |
| 139 | * @param string $name |
| 140 | * @access public |
| 141 | */ |
| 142 | function set_resource($name) |
| 143 | { |
| 144 | $this->resource = $name; |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * Connect |
| 149 | */ |
| 150 | function connect() |
| 151 | { |
| 152 | /* if (!$this->check_jid($this->username . '@' . $this->server)) |
| 153 | { |
| 154 | $this->add_to_log('Error: Jabber ID is not valid: ' . $this->username . '@' . $this->server); |
| 155 | return false; |
| 156 | }*/ |
| 157 | |
| 158 | $this->session['ssl'] = $this->use_ssl; |
| 159 | |
| 160 | if ($this->open_socket($this->connect_server, $this->port, $this->use_ssl, $this->verify_peer, $this->verify_peer_name, $this->allow_self_signed)) |
| 161 | { |
| 162 | $this->send("<?xml version='1.0' encoding='UTF-8' ?" . ">\n"); |
| 163 | $this->send("<stream:stream to='{$this->server}' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>\n"); |
| 164 | } |
| 165 | else |
| 166 | { |
| 167 | $this->add_to_log('Error: connect() #2'); |
| 168 | return false; |
| 169 | } |
| 170 | |
| 171 | // Now we listen what the server has to say...and give appropriate responses |
| 172 | $this->response($this->listen()); |
| 173 | return true; |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Disconnect |
| 178 | */ |
| 179 | function disconnect() |
| 180 | { |
| 181 | if ($this->connected()) |
| 182 | { |
| 183 | // disconnect gracefully |
| 184 | if (isset($this->session['sent_presence'])) |
| 185 | { |
| 186 | $this->send_presence('offline', '', true); |
| 187 | } |
| 188 | |
| 189 | $this->send(self::STREAM_CLOSE_HANDSHAKE); |
| 190 | // Check stream close handshake reply |
| 191 | $stream_close_reply = $this->listen(); |
| 192 | |
| 193 | if ($stream_close_reply != self::STREAM_CLOSE_HANDSHAKE) |
| 194 | { |
| 195 | $this->add_to_log("Error: Unexpected stream close handshake reply ”{$stream_close_reply}”"); |
| 196 | } |
| 197 | |
| 198 | $this->session = array(); |
| 199 | return fclose($this->connection); |
| 200 | } |
| 201 | |
| 202 | return false; |
| 203 | } |
| 204 | |
| 205 | /** |
| 206 | * Connected? |
| 207 | */ |
| 208 | function connected() |
| 209 | { |
| 210 | return (is_resource($this->connection) && !feof($this->connection)) ? true : false; |
| 211 | } |
| 212 | |
| 213 | |
| 214 | /** |
| 215 | * Initiates login (using data from contructor, after calling connect()) |
| 216 | * @access public |
| 217 | * @return bool |
| 218 | */ |
| 219 | function login() |
| 220 | { |
| 221 | if (empty($this->features)) |
| 222 | { |
| 223 | $this->add_to_log('Error: No feature information from server available.'); |
| 224 | return false; |
| 225 | } |
| 226 | |
| 227 | return $this->response($this->features); |
| 228 | } |
| 229 | |
| 230 | /** |
| 231 | * Send data to the Jabber server |
| 232 | * @param string $xml |
| 233 | * @access public |
| 234 | * @return bool |
| 235 | */ |
| 236 | function send($xml) |
| 237 | { |
| 238 | if ($this->connected()) |
| 239 | { |
| 240 | $xml = trim($xml); |
| 241 | return fwrite($this->connection, $xml); |
| 242 | } |
| 243 | else |
| 244 | { |
| 245 | $this->add_to_log('Error: Could not send, connection lost (flood?).'); |
| 246 | return false; |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * OpenSocket |
| 252 | * @param string $server host to connect to |
| 253 | * @param int $port port number |
| 254 | * @param bool $use_ssl use ssl or not |
| 255 | * @param bool $verify_peer verify ssl certificate |
| 256 | * @param bool $verify_peer_name verify peer name |
| 257 | * @param bool $allow_self_signed allow self-signed ssl certificates |
| 258 | * @access public |
| 259 | * @return bool |
| 260 | */ |
| 261 | function open_socket($server, $port, $use_ssl, $verify_peer, $verify_peer_name, $allow_self_signed) |
| 262 | { |
| 263 | if (@function_exists('dns_get_record')) |
| 264 | { |
| 265 | $record = @dns_get_record("_xmpp-client._tcp.$server", DNS_SRV); |
| 266 | if (!empty($record) && !empty($record[0]['target'])) |
| 267 | { |
| 268 | $server = $record[0]['target']; |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | $options = array(); |
| 273 | |
| 274 | if ($use_ssl) |
| 275 | { |
| 276 | $remote_socket = 'ssl://' . $server . ':' . $port; |
| 277 | |
| 278 | // Set ssl context options, see http://php.net/manual/en/context.ssl.php |
| 279 | $options['ssl'] = array('verify_peer' => $verify_peer, 'verify_peer_name' => $verify_peer_name, 'allow_self_signed' => $allow_self_signed); |
| 280 | } |
| 281 | else |
| 282 | { |
| 283 | $remote_socket = $server . ':' . $port; |
| 284 | } |
| 285 | |
| 286 | $socket_context = stream_context_create($options); |
| 287 | |
| 288 | if ($this->connection = @stream_socket_client($remote_socket, $errorno, $errorstr, $this->timeout, STREAM_CLIENT_CONNECT, $socket_context)) |
| 289 | { |
| 290 | stream_set_blocking($this->connection, 0); |
| 291 | stream_set_timeout($this->connection, 60); |
| 292 | |
| 293 | return true; |
| 294 | } |
| 295 | |
| 296 | // Apparently an error occurred... |
| 297 | $this->add_to_log('Error: open_socket() - ' . $errorstr); |
| 298 | return false; |
| 299 | } |
| 300 | |
| 301 | /** |
| 302 | * Return log |
| 303 | */ |
| 304 | function get_log() |
| 305 | { |
| 306 | if ($this->enable_logging && count($this->log_array)) |
| 307 | { |
| 308 | return implode("<br /><br />", $this->log_array); |
| 309 | } |
| 310 | |
| 311 | return ''; |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * Add information to log |
| 316 | */ |
| 317 | function add_to_log($string) |
| 318 | { |
| 319 | if ($this->enable_logging) |
| 320 | { |
| 321 | $this->log_array[] = utf8_htmlspecialchars($string); |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | /** |
| 326 | * Listens to the connection until it gets data or the timeout is reached. |
| 327 | * Thus, it should only be called if data is expected to be received. |
| 328 | * @access public |
| 329 | * @return mixed either false for timeout or an array with the received data |
| 330 | */ |
| 331 | function listen($timeout = 10, $wait = false) |
| 332 | { |
| 333 | if (!$this->connected()) |
| 334 | { |
| 335 | return false; |
| 336 | } |
| 337 | |
| 338 | // Wait for a response until timeout is reached |
| 339 | $start = time(); |
| 340 | $data = ''; |
| 341 | |
| 342 | do |
| 343 | { |
| 344 | $read = trim(fread($this->connection, 4096)); |
| 345 | $data .= $read; |
| 346 | } |
| 347 | while (time() <= $start + $timeout && !feof($this->connection) && ($wait || $data == '' || $read != '' || (substr(rtrim($data), -1) != '>'))); |
| 348 | |
| 349 | if ($data != '') |
| 350 | { |
| 351 | return $this->xmlize($data); |
| 352 | } |
| 353 | else |
| 354 | { |
| 355 | $this->add_to_log('Timeout, no response from server.'); |
| 356 | return false; |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | /** |
| 361 | * Initiates account registration (based on data used for contructor) |
| 362 | * @access public |
| 363 | * @return bool |
| 364 | */ |
| 365 | function register() |
| 366 | { |
| 367 | if (!isset($this->session['id']) || isset($this->session['jid'])) |
| 368 | { |
| 369 | $this->add_to_log('Error: Cannot initiate registration.'); |
| 370 | return false; |
| 371 | } |
| 372 | |
| 373 | $this->send("<iq type='get' id='reg_1'><query xmlns='jabber:iq:register'/></iq>"); |
| 374 | return $this->response($this->listen()); |
| 375 | } |
| 376 | |
| 377 | /** |
| 378 | * Sets account presence. No additional info required (default is "online" status) |
| 379 | * @param $message online, offline... |
| 380 | * @param $type dnd, away, chat, xa or nothing |
| 381 | * @param $unavailable set this to true if you want to become unavailable |
| 382 | * @access public |
| 383 | * @return bool |
| 384 | */ |
| 385 | function send_presence($message = '', $type = '', $unavailable = false) |
| 386 | { |
| 387 | if (!isset($this->session['jid'])) |
| 388 | { |
| 389 | $this->add_to_log('ERROR: send_presence() - Cannot set presence at this point, no jid given.'); |
| 390 | return false; |
| 391 | } |
| 392 | |
| 393 | $type = strtolower($type); |
| 394 | $type = (in_array($type, array('dnd', 'away', 'chat', 'xa'))) ? '<show>'. $type .'</show>' : ''; |
| 395 | |
| 396 | $unavailable = ($unavailable) ? " type='unavailable'" : ''; |
| 397 | $message = ($message) ? '<status>' . utf8_htmlspecialchars($message) .'</status>' : ''; |
| 398 | |
| 399 | $this->session['sent_presence'] = !$unavailable; |
| 400 | |
| 401 | return $this->send("<presence$unavailable>" . $type . $message . '</presence>'); |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * This handles all the different XML elements |
| 406 | * @param array $xml |
| 407 | * @access public |
| 408 | * @return bool |
| 409 | */ |
| 410 | function response($xml) |
| 411 | { |
| 412 | if (!is_array($xml) || !count($xml)) |
| 413 | { |
| 414 | return false; |
| 415 | } |
| 416 | |
| 417 | // did we get multiple elements? do one after another |
| 418 | // array('message' => ..., 'presence' => ...) |
| 419 | if (count($xml) > 1) |
| 420 | { |
| 421 | foreach ($xml as $key => $value) |
| 422 | { |
| 423 | $this->response(array($key => $value)); |
| 424 | } |
| 425 | return; |
| 426 | } |
| 427 | else |
| 428 | { |
| 429 | // or even multiple elements of the same type? |
| 430 | // array('message' => array(0 => ..., 1 => ...)) |
| 431 | if (is_array(reset($xml)) && count(reset($xml)) > 1) |
| 432 | { |
| 433 | foreach (reset($xml) as $value) |
| 434 | { |
| 435 | $this->response(array(key($xml) => array(0 => $value))); |
| 436 | } |
| 437 | return; |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | switch (key($xml)) |
| 442 | { |
| 443 | case 'stream:stream': |
| 444 | // Connection initialised (or after authentication). Not much to do here... |
| 445 | |
| 446 | if (isset($xml['stream:stream'][0]['#']['stream:features'])) |
| 447 | { |
| 448 | // we already got all info we need |
| 449 | $this->features = $xml['stream:stream'][0]['#']; |
| 450 | } |
| 451 | else |
| 452 | { |
| 453 | $this->features = $this->listen(); |
| 454 | } |
| 455 | |
| 456 | $second_time = isset($this->session['id']); |
| 457 | $this->session['id'] = isset($xml['stream:stream'][0]['@']['id']) ? $xml['stream:stream'][0]['@']['id'] : ''; |
| 458 | |
| 459 | if ($second_time) |
| 460 | { |
| 461 | // If we are here for the second time after TLS, we need to continue logging in |
| 462 | return $this->login(); |
| 463 | } |
| 464 | |
| 465 | // go on with authentication? |
| 466 | if (isset($this->features['stream:features'][0]['#']['bind']) || !empty($this->session['tls'])) |
| 467 | { |
| 468 | return $this->response($this->features); |
| 469 | } |
| 470 | break; |
| 471 | |
| 472 | case 'stream:features': |
| 473 | // Resource binding after successful authentication |
| 474 | if (isset($this->session['authenticated'])) |
| 475 | { |
| 476 | // session required? |
| 477 | $this->session['sess_required'] = isset($xml['stream:features'][0]['#']['session']); |
| 478 | |
| 479 | $this->send("<iq type='set' id='bind_1'> |
| 480 | <bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'> |
| 481 | <resource>" . utf8_htmlspecialchars($this->resource) . '</resource> |
| 482 | </bind> |
| 483 | </iq>'); |
| 484 | return $this->response($this->listen()); |
| 485 | } |
| 486 | |
| 487 | // Let's use TLS if SSL is not enabled and we can actually use it |
| 488 | if (!$this->session['ssl'] && self::can_use_tls() && self::can_use_ssl() && isset($xml['stream:features'][0]['#']['starttls'])) |
| 489 | { |
| 490 | $this->add_to_log('Switching to TLS.'); |
| 491 | $this->send("<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>\n"); |
| 492 | return $this->response($this->listen()); |
| 493 | } |
| 494 | |
| 495 | // Does the server support SASL authentication? |
| 496 | |
| 497 | // I hope so, because we do (and no other method). |
| 498 | if (isset($xml['stream:features'][0]['#']['mechanisms'][0]['@']['xmlns']) && $xml['stream:features'][0]['#']['mechanisms'][0]['@']['xmlns'] == 'urn:ietf:params:xml:ns:xmpp-sasl') |
| 499 | { |
| 500 | // Now decide on method |
| 501 | $methods = array(); |
| 502 | |
| 503 | foreach ($xml['stream:features'][0]['#']['mechanisms'][0]['#']['mechanism'] as $value) |
| 504 | { |
| 505 | $methods[] = $value['#']; |
| 506 | } |
| 507 | |
| 508 | // we prefer DIGEST-MD5 |
| 509 | // we don't want to use plain authentication (neither does the server usually) if no encryption is in place |
| 510 | |
| 511 | // http://www.xmpp.org/extensions/attic/jep-0078-1.7.html |
| 512 | // The plaintext mechanism SHOULD NOT be used unless the underlying stream is encrypted (using SSL or TLS) |
| 513 | // and the client has verified that the server certificate is signed by a trusted certificate authority. |
| 514 | |
| 515 | if (in_array('DIGEST-MD5', $methods)) |
| 516 | { |
| 517 | $this->send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='DIGEST-MD5'/>"); |
| 518 | } |
| 519 | else if (in_array('PLAIN', $methods) && ($this->session['ssl'] || !empty($this->session['tls']))) |
| 520 | { |
| 521 | // http://www.ietf.org/rfc/rfc4616.txt (PLAIN SASL Mechanism) |
| 522 | $this->send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'>" |
| 523 | . base64_encode($this->username . '@' . $this->server . chr(0) . $this->username . chr(0) . $this->password) . |
| 524 | '</auth>'); |
| 525 | } |
| 526 | else if (in_array('ANONYMOUS', $methods)) |
| 527 | { |
| 528 | $this->send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='ANONYMOUS'/>"); |
| 529 | } |
| 530 | else |
| 531 | { |
| 532 | // not good... |
| 533 | $this->add_to_log('Error: No authentication method supported.'); |
| 534 | $this->disconnect(); |
| 535 | return false; |
| 536 | } |
| 537 | |
| 538 | return $this->response($this->listen()); |
| 539 | } |
| 540 | else |
| 541 | { |
| 542 | // ok, this is it. bye. |
| 543 | $this->add_to_log('Error: Server does not offer SASL authentication.'); |
| 544 | $this->disconnect(); |
| 545 | return false; |
| 546 | } |
| 547 | break; |
| 548 | |
| 549 | case 'challenge': |
| 550 | // continue with authentication...a challenge literally -_- |
| 551 | $decoded = base64_decode($xml['challenge'][0]['#']); |
| 552 | $decoded = $this->parse_data($decoded); |
| 553 | |
| 554 | if (!isset($decoded['digest-uri'])) |
| 555 | { |
| 556 | $decoded['digest-uri'] = 'xmpp/'. $this->server; |
| 557 | } |
| 558 | |
| 559 | // better generate a cnonce, maybe it's needed |
| 560 | $decoded['cnonce'] = base64_encode(md5(uniqid(mt_rand(), true))); |
| 561 | |
| 562 | // second challenge? |
| 563 | if (isset($decoded['rspauth'])) |
| 564 | { |
| 565 | $this->send("<response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'/>"); |
| 566 | } |
| 567 | else |
| 568 | { |
| 569 | // Make sure we only use 'auth' for qop (relevant for $this->encrypt_password()) |
| 570 | // If the <response> is choking up on the changed parameter we may need to adjust encrypt_password() directly |
| 571 | if (isset($decoded['qop']) && $decoded['qop'] != 'auth' && strpos($decoded['qop'], 'auth') !== false) |
| 572 | { |
| 573 | $decoded['qop'] = 'auth'; |
| 574 | } |
| 575 | |
| 576 | $response = array( |
| 577 | 'username' => $this->username, |
| 578 | 'response' => $this->encrypt_password(array_merge($decoded, array('nc' => '00000001'))), |
| 579 | 'charset' => 'utf-8', |
| 580 | 'nc' => '00000001', |
| 581 | 'qop' => 'auth', // only auth being supported |
| 582 | ); |
| 583 | |
| 584 | foreach (array('nonce', 'digest-uri', 'realm', 'cnonce') as $key) |
| 585 | { |
| 586 | if (isset($decoded[$key])) |
| 587 | { |
| 588 | $response[$key] = $decoded[$key]; |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | $this->send("<response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'>" . base64_encode($this->implode_data($response)) . '</response>'); |
| 593 | } |
| 594 | |
| 595 | return $this->response($this->listen()); |
| 596 | break; |
| 597 | |
| 598 | case 'failure': |
| 599 | $this->add_to_log('Error: Server sent "failure".'); |
| 600 | $this->disconnect(); |
| 601 | return false; |
| 602 | break; |
| 603 | |
| 604 | case 'proceed': |
| 605 | // continue switching to TLS |
| 606 | $meta = stream_get_meta_data($this->connection); |
| 607 | stream_set_blocking($this->connection, 1); |
| 608 | |
| 609 | if (!stream_socket_enable_crypto($this->connection, true, STREAM_CRYPTO_METHOD_TLS_CLIENT)) |
| 610 | { |
| 611 | $this->add_to_log('Error: TLS mode change failed.'); |
| 612 | return false; |
| 613 | } |
| 614 | |
| 615 | stream_set_blocking($this->connection, $meta['blocked']); |
| 616 | $this->session['tls'] = true; |
| 617 | |
| 618 | // new stream |
| 619 | $this->send("<?xml version='1.0' encoding='UTF-8' ?" . ">\n"); |
| 620 | $this->send("<stream:stream to='{$this->server}' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>\n"); |
| 621 | |
| 622 | return $this->response($this->listen()); |
| 623 | break; |
| 624 | |
| 625 | case 'success': |
| 626 | // Yay, authentication successful. |
| 627 | $this->send("<stream:stream to='{$this->server}' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>\n"); |
| 628 | $this->session['authenticated'] = true; |
| 629 | |
| 630 | // we have to wait for another response |
| 631 | return $this->response($this->listen()); |
| 632 | break; |
| 633 | |
| 634 | case 'iq': |
| 635 | // we are not interested in IQs we did not expect |
| 636 | if (!isset($xml['iq'][0]['@']['id'])) |
| 637 | { |
| 638 | return false; |
| 639 | } |
| 640 | |
| 641 | // multiple possibilities here |
| 642 | switch ($xml['iq'][0]['@']['id']) |
| 643 | { |
| 644 | case 'bind_1': |
| 645 | $this->session['jid'] = $xml['iq'][0]['#']['bind'][0]['#']['jid'][0]['#']; |
| 646 | |
| 647 | // and (maybe) yet another request to be able to send messages *finally* |
| 648 | if ($this->session['sess_required']) |
| 649 | { |
| 650 | $this->send("<iq to='{$this->server}' type='set' id='sess_1'> |
| 651 | <session xmlns='urn:ietf:params:xml:ns:xmpp-session'/> |
| 652 | </iq>"); |
| 653 | return $this->response($this->listen()); |
| 654 | } |
| 655 | |
| 656 | return true; |
| 657 | break; |
| 658 | |
| 659 | case 'sess_1': |
| 660 | return true; |
| 661 | break; |
| 662 | |
| 663 | case 'reg_1': |
| 664 | $this->send("<iq type='set' id='reg_2'> |
| 665 | <query xmlns='jabber:iq:register'> |
| 666 | <username>" . utf8_htmlspecialchars($this->username) . "</username> |
| 667 | <password>" . utf8_htmlspecialchars($this->password) . "</password> |
| 668 | </query> |
| 669 | </iq>"); |
| 670 | return $this->response($this->listen()); |
| 671 | break; |
| 672 | |
| 673 | case 'reg_2': |
| 674 | // registration end |
| 675 | if (isset($xml['iq'][0]['#']['error'])) |
| 676 | { |
| 677 | $this->add_to_log('Warning: Registration failed.'); |
| 678 | return false; |
| 679 | } |
| 680 | return true; |
| 681 | break; |
| 682 | |
| 683 | case 'unreg_1': |
| 684 | return true; |
| 685 | break; |
| 686 | |
| 687 | default: |
| 688 | $this->add_to_log('Notice: Received unexpected IQ.'); |
| 689 | return false; |
| 690 | break; |
| 691 | } |
| 692 | break; |
| 693 | |
| 694 | case 'message': |
| 695 | // we are only interested in content... |
| 696 | if (!isset($xml['message'][0]['#']['body'])) |
| 697 | { |
| 698 | return false; |
| 699 | } |
| 700 | |
| 701 | $message['body'] = $xml['message'][0]['#']['body'][0]['#']; |
| 702 | $message['from'] = $xml['message'][0]['@']['from']; |
| 703 | |
| 704 | if (isset($xml['message'][0]['#']['subject'])) |
| 705 | { |
| 706 | $message['subject'] = $xml['message'][0]['#']['subject'][0]['#']; |
| 707 | } |
| 708 | $this->session['messages'][] = $message; |
| 709 | break; |
| 710 | |
| 711 | default: |
| 712 | // hm...don't know this response |
| 713 | $this->add_to_log('Notice: Unknown server response'); |
| 714 | return false; |
| 715 | break; |
| 716 | } |
| 717 | } |
| 718 | |
| 719 | function send_message($to, $text, $subject = '', $type = 'normal') |
| 720 | { |
| 721 | if (!isset($this->session['jid'])) |
| 722 | { |
| 723 | return false; |
| 724 | } |
| 725 | |
| 726 | if (!in_array($type, array('chat', 'normal', 'error', 'groupchat', 'headline'))) |
| 727 | { |
| 728 | $type = 'normal'; |
| 729 | } |
| 730 | |
| 731 | return $this->send("<message from='" . utf8_htmlspecialchars($this->session['jid']) . "' to='" . utf8_htmlspecialchars($to) . "' type='$type' id='" . uniqid('msg') . "'> |
| 732 | <subject>" . utf8_htmlspecialchars($subject) . "</subject> |
| 733 | <body>" . utf8_htmlspecialchars($text) . "</body> |
| 734 | </message>" |
| 735 | ); |
| 736 | } |
| 737 | |
| 738 | /** |
| 739 | * Encrypts a password as in RFC 2831 |
| 740 | * @param array $data Needs data from the client-server connection |
| 741 | * @access public |
| 742 | * @return string |
| 743 | */ |
| 744 | function encrypt_password($data) |
| 745 | { |
| 746 | // let's me think about <challenge> again... |
| 747 | foreach (array('realm', 'cnonce', 'digest-uri') as $key) |
| 748 | { |
| 749 | if (!isset($data[$key])) |
| 750 | { |
| 751 | $data[$key] = ''; |
| 752 | } |
| 753 | } |
| 754 | |
| 755 | $pack = md5($this->username . ':' . $data['realm'] . ':' . $this->password); |
| 756 | |
| 757 | if (isset($data['authzid'])) |
| 758 | { |
| 759 | $a1 = pack('H32', $pack) . sprintf(':%s:%s:%s', $data['nonce'], $data['cnonce'], $data['authzid']); |
| 760 | } |
| 761 | else |
| 762 | { |
| 763 | $a1 = pack('H32', $pack) . sprintf(':%s:%s', $data['nonce'], $data['cnonce']); |
| 764 | } |
| 765 | |
| 766 | // should be: qop = auth |
| 767 | $a2 = 'AUTHENTICATE:'. $data['digest-uri']; |
| 768 | |
| 769 | return md5(sprintf('%s:%s:%s:%s:%s:%s', md5($a1), $data['nonce'], $data['nc'], $data['cnonce'], $data['qop'], md5($a2))); |
| 770 | } |
| 771 | |
| 772 | /** |
| 773 | * parse_data like a="b",c="d",... or like a="a, b", c, d="e", f=g,... |
| 774 | * @param string $data |
| 775 | * @access public |
| 776 | * @return array a => b ... |
| 777 | */ |
| 778 | function parse_data($data) |
| 779 | { |
| 780 | $data = explode(',', $data); |
| 781 | $pairs = array(); |
| 782 | $key = false; |
| 783 | |
| 784 | foreach ($data as $pair) |
| 785 | { |
| 786 | $dd = strpos($pair, '='); |
| 787 | |
| 788 | if ($dd) |
| 789 | { |
| 790 | $key = trim(substr($pair, 0, $dd)); |
| 791 | $pairs[$key] = trim(trim(substr($pair, $dd + 1)), '"'); |
| 792 | } |
| 793 | else if (strpos(strrev(trim($pair)), '"') === 0 && $key) |
| 794 | { |
| 795 | // We are actually having something left from "a, b" values, add it to the last one we handled. |
| 796 | $pairs[$key] .= ',' . trim(trim($pair), '"'); |
| 797 | continue; |
| 798 | } |
| 799 | } |
| 800 | |
| 801 | return $pairs; |
| 802 | } |
| 803 | |
| 804 | /** |
| 805 | * opposite of jabber::parse_data() |
| 806 | * @param array $data |
| 807 | * @access public |
| 808 | * @return string |
| 809 | */ |
| 810 | function implode_data($data) |
| 811 | { |
| 812 | $return = array(); |
| 813 | foreach ($data as $key => $value) |
| 814 | { |
| 815 | $return[] = $key . '="' . $value . '"'; |
| 816 | } |
| 817 | return implode(',', $return); |
| 818 | } |
| 819 | |
| 820 | /** |
| 821 | * xmlize() |
| 822 | * @author Hans Anderson |
| 823 | * @copyright Hans Anderson / http://www.hansanderson.com/php/xml/ |
| 824 | */ |
| 825 | function xmlize($data, $skip_white = 1, $encoding = 'UTF-8') |
| 826 | { |
| 827 | $data = trim($data); |
| 828 | |
| 829 | if (substr($data, 0, 5) != '<?xml') |
| 830 | { |
| 831 | // mod |
| 832 | $data = '<root>'. $data . '</root>'; |
| 833 | } |
| 834 | |
| 835 | $vals = $index = $array = array(); |
| 836 | $parser = xml_parser_create($encoding); |
| 837 | xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0); |
| 838 | xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, $skip_white); |
| 839 | xml_parse_into_struct($parser, $data, $vals, $index); |
| 840 | xml_parser_free($parser); |
| 841 | |
| 842 | $i = 0; |
| 843 | $tagname = $vals[$i]['tag']; |
| 844 | |
| 845 | $array[$tagname][0]['@'] = (isset($vals[$i]['attributes'])) ? $vals[$i]['attributes'] : array(); |
| 846 | $array[$tagname][0]['#'] = $this->_xml_depth($vals, $i); |
| 847 | |
| 848 | if (substr($data, 0, 5) != '<?xml') |
| 849 | { |
| 850 | $array = $array['root'][0]['#']; |
| 851 | } |
| 852 | |
| 853 | return $array; |
| 854 | } |
| 855 | |
| 856 | /** |
| 857 | * _xml_depth() |
| 858 | * @author Hans Anderson |
| 859 | * @copyright Hans Anderson / http://www.hansanderson.com/php/xml/ |
| 860 | */ |
| 861 | function _xml_depth($vals, &$i) |
| 862 | { |
| 863 | $children = array(); |
| 864 | |
| 865 | if (isset($vals[$i]['value'])) |
| 866 | { |
| 867 | array_push($children, $vals[$i]['value']); |
| 868 | } |
| 869 | |
| 870 | while (++$i < count($vals)) |
| 871 | { |
| 872 | switch ($vals[$i]['type']) |
| 873 | { |
| 874 | case 'open': |
| 875 | |
| 876 | $tagname = (isset($vals[$i]['tag'])) ? $vals[$i]['tag'] : ''; |
| 877 | $size = (isset($children[$tagname])) ? count($children[$tagname]) : 0; |
| 878 | |
| 879 | if (isset($vals[$i]['attributes'])) |
| 880 | { |
| 881 | $children[$tagname][$size]['@'] = $vals[$i]['attributes']; |
| 882 | } |
| 883 | |
| 884 | $children[$tagname][$size]['#'] = $this->_xml_depth($vals, $i); |
| 885 | |
| 886 | break; |
| 887 | |
| 888 | case 'cdata': |
| 889 | array_push($children, $vals[$i]['value']); |
| 890 | break; |
| 891 | |
| 892 | case 'complete': |
| 893 | |
| 894 | $tagname = $vals[$i]['tag']; |
| 895 | $size = (isset($children[$tagname])) ? count($children[$tagname]) : 0; |
| 896 | $children[$tagname][$size]['#'] = (isset($vals[$i]['value'])) ? $vals[$i]['value'] : array(); |
| 897 | |
| 898 | if (isset($vals[$i]['attributes'])) |
| 899 | { |
| 900 | $children[$tagname][$size]['@'] = $vals[$i]['attributes']; |
| 901 | } |
| 902 | |
| 903 | break; |
| 904 | |
| 905 | case 'close': |
| 906 | return $children; |
| 907 | break; |
| 908 | } |
| 909 | } |
| 910 | |
| 911 | return $children; |
| 912 | } |
| 913 | } |