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PHP Cross Reference of phpBB-3.3.10-deutsch |
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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 namespace phpbb; 15 16 /** 17 * Session class 18 */ 19 class session 20 { 21 var $cookie_data = array(); 22 var $page = array(); 23 var $data = array(); 24 var $browser = ''; 25 var $forwarded_for = ''; 26 var $host = ''; 27 var $session_id = ''; 28 var $ip = ''; 29 var $load = 0; 30 var $time_now = 0; 31 var $update_session_page = true; 32 33 /** 34 * Extract current session page 35 * 36 * @param string $root_path current root path (phpbb_root_path) 37 * @return array 38 */ 39 static function extract_current_page($root_path) 40 { 41 global $request, $symfony_request, $phpbb_filesystem; 42 43 $page_array = array(); 44 45 // First of all, get the request uri... 46 $script_name = $request->escape($symfony_request->getScriptName(), true); 47 $args = $request->escape(explode('&', $symfony_request->getQueryString()), true); 48 49 // If we are unable to get the script name we use REQUEST_URI as a failover and note it within the page array for easier support... 50 if (!$script_name) 51 { 52 $script_name = html_entity_decode($request->server('REQUEST_URI'), ENT_COMPAT); 53 $script_name = (($pos = strpos($script_name, '?')) !== false) ? substr($script_name, 0, $pos) : $script_name; 54 $page_array['failover'] = 1; 55 } 56 57 // Replace backslashes and doubled slashes (could happen on some proxy setups) 58 $script_name = str_replace(array('\\', '//'), '/', $script_name); 59 60 // Now, remove the sid and let us get a clean query string... 61 $use_args = array(); 62 63 // Since some browser do not encode correctly we need to do this with some "special" characters... 64 // " -> %22, ' => %27, < -> %3C, > -> %3E 65 $find = array('"', "'", '<', '>', '"', '<', '>'); 66 $replace = array('%22', '%27', '%3C', '%3E', '%22', '%3C', '%3E'); 67 68 foreach ($args as $key => $argument) 69 { 70 if (strpos($argument, 'sid=') === 0) 71 { 72 continue; 73 } 74 75 $use_args[] = str_replace($find, $replace, $argument); 76 } 77 unset($args); 78 79 // The following examples given are for an request uri of {path to the phpbb directory}/adm/index.php?i=10&b=2 80 81 // The current query string 82 $query_string = trim(implode('&', $use_args)); 83 84 // basenamed page name (for example: index.php) 85 $page_name = (substr($script_name, -1, 1) == '/') ? '' : basename($script_name); 86 $page_name = urlencode(htmlspecialchars($page_name, ENT_COMPAT)); 87 88 $symfony_request_path = $phpbb_filesystem->clean_path($symfony_request->getPathInfo()); 89 if ($symfony_request_path !== '/') 90 { 91 $page_name .= str_replace('%2F', '/', urlencode($symfony_request_path)); 92 } 93 94 if (substr($root_path, 0, 2) === './' && strpos($root_path, '..') === false) 95 { 96 $root_dirs = explode('/', str_replace('\\', '/', rtrim($root_path, '/'))); 97 $page_dirs = explode('/', str_replace('\\', '/', '.')); 98 } 99 else 100 { 101 // current directory within the phpBB root (for example: adm) 102 $root_dirs = explode('/', str_replace('\\', '/', $phpbb_filesystem->realpath($root_path))); 103 $page_dirs = explode('/', str_replace('\\', '/', $phpbb_filesystem->realpath('./'))); 104 } 105 106 $intersection = array_intersect_assoc($root_dirs, $page_dirs); 107 108 $root_dirs = array_diff_assoc($root_dirs, $intersection); 109 $page_dirs = array_diff_assoc($page_dirs, $intersection); 110 111 $page_dir = str_repeat('../', count($root_dirs)) . implode('/', $page_dirs); 112 113 if ($page_dir && substr($page_dir, -1, 1) == '/') 114 { 115 $page_dir = substr($page_dir, 0, -1); 116 } 117 118 // Current page from phpBB root (for example: adm/index.php?i=10&b=2) 119 $page = (($page_dir) ? $page_dir . '/' : '') . $page_name; 120 if ($query_string) 121 { 122 $page .= '?' . $query_string; 123 } 124 125 // The script path from the webroot to the current directory (for example: /phpBB3/adm/) : always prefixed with / and ends in / 126 $script_path = $symfony_request->getBasePath(); 127 128 // The script path from the webroot to the phpBB root (for example: /phpBB3/) 129 $script_dirs = explode('/', $script_path); 130 array_splice($script_dirs, -count($page_dirs)); 131 $root_script_path = implode('/', $script_dirs) . (count($root_dirs) ? '/' . implode('/', $root_dirs) : ''); 132 133 // We are on the base level (phpBB root == webroot), lets adjust the variables a bit... 134 if (!$root_script_path) 135 { 136 $root_script_path = ($page_dir) ? str_replace($page_dir, '', $script_path) : $script_path; 137 } 138 139 $script_path .= (substr($script_path, -1, 1) == '/') ? '' : '/'; 140 $root_script_path .= (substr($root_script_path, -1, 1) == '/') ? '' : '/'; 141 142 $forum_id = $request->variable('f', 0); 143 // maximum forum id value is maximum value of mediumint unsigned column 144 $forum_id = ($forum_id > 0 && $forum_id < 16777215) ? $forum_id : 0; 145 146 $page_array += array( 147 'page_name' => $page_name, 148 'page_dir' => $page_dir, 149 150 'query_string' => $query_string, 151 'script_path' => str_replace(' ', '%20', htmlspecialchars($script_path, ENT_COMPAT)), 152 'root_script_path' => str_replace(' ', '%20', htmlspecialchars($root_script_path, ENT_COMPAT)), 153 154 'page' => $page, 155 'forum' => $forum_id, 156 ); 157 158 return $page_array; 159 } 160 161 /** 162 * Get valid hostname/port. HTTP_HOST is used, SERVER_NAME if HTTP_HOST not present. 163 */ 164 function extract_current_hostname() 165 { 166 global $config, $request; 167 168 // Get hostname 169 $host = html_entity_decode($request->header('Host', $request->server('SERVER_NAME')), ENT_COMPAT); 170 171 // Should be a string and lowered 172 $host = (string) strtolower($host); 173 174 // If host is equal the cookie domain or the server name (if config is set), then we assume it is valid 175 if ((isset($config['cookie_domain']) && $host === $config['cookie_domain']) || (isset($config['server_name']) && $host === $config['server_name'])) 176 { 177 return $host; 178 } 179 180 // Is the host actually a IP? If so, we use the IP... (IPv4) 181 if (long2ip(ip2long($host)) === $host) 182 { 183 return $host; 184 } 185 186 // Now return the hostname (this also removes any port definition). The http:// is prepended to construct a valid URL, hosts never have a scheme assigned 187 $host = @parse_url('http://' . $host); 188 $host = (!empty($host['host'])) ? $host['host'] : ''; 189 190 // Remove any portions not removed by parse_url (#) 191 $host = str_replace('#', '', $host); 192 193 // If, by any means, the host is now empty, we will use a "best approach" way to guess one 194 if (empty($host)) 195 { 196 if (!empty($config['server_name'])) 197 { 198 $host = $config['server_name']; 199 } 200 else if (!empty($config['cookie_domain'])) 201 { 202 $host = (strpos($config['cookie_domain'], '.') === 0) ? substr($config['cookie_domain'], 1) : $config['cookie_domain']; 203 } 204 else 205 { 206 // Set to OS hostname or localhost 207 $host = (function_exists('php_uname')) ? php_uname('n') : 'localhost'; 208 } 209 } 210 211 // It may be still no valid host, but for sure only a hostname (we may further expand on the cookie domain... if set) 212 return $host; 213 } 214 215 /** 216 * Start session management 217 * 218 * This is where all session activity begins. We gather various pieces of 219 * information from the client and server. We test to see if a session already 220 * exists. If it does, fine and dandy. If it doesn't we'll go on to create a 221 * new one ... pretty logical heh? We also examine the system load (if we're 222 * running on a system which makes such information readily available) and 223 * halt if it's above an admin definable limit. 224 * 225 * @param bool $update_session_page if true the session page gets updated. 226 * This can be set to circumvent certain scripts to update the users last visited page. 227 */ 228 function session_begin($update_session_page = true) 229 { 230 global $phpEx, $SID, $_SID, $_EXTRA_URL, $db, $config, $phpbb_root_path; 231 global $request, $phpbb_container, $user, $phpbb_log, $phpbb_dispatcher; 232 233 // Give us some basic information 234 $this->time_now = time(); 235 $this->cookie_data = array('u' => 0, 'k' => ''); 236 $this->update_session_page = $update_session_page; 237 $this->browser = $request->header('User-Agent'); 238 $this->referer = $request->header('Referer'); 239 $this->forwarded_for = $request->header('X-Forwarded-For'); 240 241 $this->host = $this->extract_current_hostname(); 242 $this->page = $this->extract_current_page($phpbb_root_path); 243 244 // if the forwarded for header shall be checked we have to validate its contents 245 if ($config['forwarded_for_check']) 246 { 247 $this->forwarded_for = preg_replace('# {2,}#', ' ', str_replace(',', ' ', $this->forwarded_for)); 248 249 // split the list of IPs 250 $ips = explode(' ', $this->forwarded_for); 251 foreach ($ips as $ip) 252 { 253 if (!filter_var($ip, FILTER_VALIDATE_IP)) 254 { 255 // contains invalid data, don't use the forwarded for header 256 $this->forwarded_for = ''; 257 break; 258 } 259 } 260 } 261 else 262 { 263 $this->forwarded_for = ''; 264 } 265 266 if ($request->is_set($config['cookie_name'] . '_sid', \phpbb\request\request_interface::COOKIE) || $request->is_set($config['cookie_name'] . '_u', \phpbb\request\request_interface::COOKIE)) 267 { 268 $this->cookie_data['u'] = $request->variable($config['cookie_name'] . '_u', 0, false, \phpbb\request\request_interface::COOKIE); 269 $this->cookie_data['k'] = $request->variable($config['cookie_name'] . '_k', '', false, \phpbb\request\request_interface::COOKIE); 270 $this->session_id = $request->variable($config['cookie_name'] . '_sid', '', false, \phpbb\request\request_interface::COOKIE); 271 272 $SID = (defined('NEED_SID')) ? '?sid=' . $this->session_id : '?sid='; 273 $_SID = (defined('NEED_SID')) ? $this->session_id : ''; 274 275 if (empty($this->session_id)) 276 { 277 $this->session_id = $_SID = $request->variable('sid', ''); 278 $SID = '?sid=' . $this->session_id; 279 $this->cookie_data = array('u' => 0, 'k' => ''); 280 } 281 } 282 else 283 { 284 $this->session_id = $_SID = $request->variable('sid', ''); 285 $SID = '?sid=' . $this->session_id; 286 } 287 288 $_EXTRA_URL = array(); 289 290 // Why no forwarded_for et al? Well, too easily spoofed. With the results of my recent requests 291 // it's pretty clear that in the majority of cases you'll at least be left with a proxy/cache ip. 292 $ip = html_entity_decode($request->server('REMOTE_ADDR'), ENT_COMPAT); 293 $ip = preg_replace('# {2,}#', ' ', str_replace(',', ' ', $ip)); 294 295 /** 296 * Event to alter user IP address 297 * 298 * @event core.session_ip_after 299 * @var string ip REMOTE_ADDR 300 * @since 3.1.10-RC1 301 */ 302 $vars = array('ip'); 303 extract($phpbb_dispatcher->trigger_event('core.session_ip_after', compact($vars))); 304 305 // split the list of IPs 306 $ips = explode(' ', trim($ip)); 307 308 // Default IP if REMOTE_ADDR is invalid 309 $this->ip = '127.0.0.1'; 310 311 foreach ($ips as $ip) 312 { 313 // Normalise IP address 314 $ip = phpbb_ip_normalise($ip); 315 316 if ($ip === false) 317 { 318 // IP address is invalid. 319 break; 320 } 321 322 // IP address is valid. 323 $this->ip = $ip; 324 } 325 326 $this->load = false; 327 328 // Load limit check (if applicable) 329 if ($config['limit_load'] || $config['limit_search_load']) 330 { 331 if ((function_exists('sys_getloadavg') && $load = sys_getloadavg()) || ($load = explode(' ', @file_get_contents('/proc/loadavg')))) 332 { 333 $this->load = array_slice($load, 0, 1); 334 $this->load = floatval($this->load[0]); 335 } 336 else 337 { 338 $config->set('limit_load', '0'); 339 $config->set('limit_search_load', '0'); 340 } 341 } 342 343 // if no session id is set, redirect to index.php 344 $session_id = $request->variable('sid', ''); 345 if (defined('NEED_SID') && (empty($session_id) || $this->session_id !== $session_id)) 346 { 347 send_status_line(401, 'Unauthorized'); 348 redirect(append_sid("{$phpbb_root_path}index.$phpEx")); 349 } 350 351 // if session id is set 352 if (!empty($this->session_id)) 353 { 354 $sql = 'SELECT u.*, s.* 355 FROM ' . SESSIONS_TABLE . ' s, ' . USERS_TABLE . " u 356 WHERE s.session_id = '" . $db->sql_escape($this->session_id) . "' 357 AND u.user_id = s.session_user_id"; 358 $result = $db->sql_query($sql); 359 $this->data = $db->sql_fetchrow($result); 360 $db->sql_freeresult($result); 361 362 // Did the session exist in the DB? 363 if (isset($this->data['user_id'])) 364 { 365 // Validate IP length according to admin ... enforces an IP 366 // check on bots if admin requires this 367 // $quadcheck = ($config['ip_check_bot'] && $this->data['user_type'] & USER_BOT) ? 4 : $config['ip_check']; 368 369 if (strpos($this->ip, ':') !== false && strpos($this->data['session_ip'], ':') !== false) 370 { 371 $s_ip = short_ipv6($this->data['session_ip'], $config['ip_check']); 372 $u_ip = short_ipv6($this->ip, $config['ip_check']); 373 } 374 else 375 { 376 $s_ip = implode('.', array_slice(explode('.', $this->data['session_ip']), 0, $config['ip_check'])); 377 $u_ip = implode('.', array_slice(explode('.', $this->ip), 0, $config['ip_check'])); 378 } 379 380 $s_browser = ($config['browser_check']) ? trim(strtolower(substr($this->data['session_browser'], 0, 149))) : ''; 381 $u_browser = ($config['browser_check']) ? trim(strtolower(substr($this->browser, 0, 149))) : ''; 382 383 $s_forwarded_for = ($config['forwarded_for_check']) ? substr($this->data['session_forwarded_for'], 0, 254) : ''; 384 $u_forwarded_for = ($config['forwarded_for_check']) ? substr($this->forwarded_for, 0, 254) : ''; 385 386 // referer checks 387 // The @ before $config['referer_validation'] suppresses notices present while running the updater 388 $check_referer_path = (@$config['referer_validation'] == REFERER_VALIDATE_PATH); 389 $referer_valid = true; 390 391 // we assume HEAD and TRACE to be foul play and thus only whitelist GET 392 if (@$config['referer_validation'] && strtolower($request->server('REQUEST_METHOD')) !== 'get') 393 { 394 $referer_valid = $this->validate_referer($check_referer_path); 395 } 396 397 if ($u_ip === $s_ip && $s_browser === $u_browser && $s_forwarded_for === $u_forwarded_for && $referer_valid) 398 { 399 $session_expired = false; 400 401 // Check whether the session is still valid if we have one 402 /* @var $provider_collection \phpbb\auth\provider_collection */ 403 $provider_collection = $phpbb_container->get('auth.provider_collection'); 404 $provider = $provider_collection->get_provider(); 405 406 if (!($provider instanceof \phpbb\auth\provider\provider_interface)) 407 { 408 throw new \RuntimeException($provider . ' must implement \phpbb\auth\provider\provider_interface'); 409 } 410 411 $ret = $provider->validate_session($this->data); 412 if ($ret !== null && !$ret) 413 { 414 $session_expired = true; 415 } 416 417 if (!$session_expired) 418 { 419 // Check the session length timeframe if autologin is not enabled. 420 // Else check the autologin length... and also removing those having autologin enabled but no longer allowed board-wide. 421 if (!$this->data['session_autologin']) 422 { 423 if ($this->data['session_time'] < $this->time_now - ((int) $config['session_length'] + 60)) 424 { 425 $session_expired = true; 426 } 427 } 428 else if (!$config['allow_autologin'] || ($config['max_autologin_time'] && $this->data['session_time'] < $this->time_now - (86400 * (int) $config['max_autologin_time']) + 60)) 429 { 430 $session_expired = true; 431 } 432 } 433 434 if (!$session_expired) 435 { 436 $this->data['is_registered'] = ($this->data['user_id'] != ANONYMOUS && ($this->data['user_type'] == USER_NORMAL || $this->data['user_type'] == USER_FOUNDER)) ? true : false; 437 $this->data['is_bot'] = (!$this->data['is_registered'] && $this->data['user_id'] != ANONYMOUS) ? true : false; 438 $this->data['user_lang'] = basename($this->data['user_lang']); 439 440 // Is user banned? Are they excluded? Won't return on ban, exists within method 441 $this->check_ban_for_current_session($config); 442 443 return true; 444 } 445 } 446 else 447 { 448 // Added logging temporarily to help debug bugs... 449 if ($phpbb_container->getParameter('session.log_errors') && $this->data['user_id'] != ANONYMOUS) 450 { 451 if ($referer_valid) 452 { 453 $phpbb_log->add('critical', $user->data['user_id'], $user->ip, 'LOG_IP_BROWSER_FORWARDED_CHECK', false, array( 454 $u_ip, 455 $s_ip, 456 $u_browser, 457 $s_browser, 458 htmlspecialchars($u_forwarded_for, ENT_COMPAT), 459 htmlspecialchars($s_forwarded_for, ENT_COMPAT) 460 )); 461 } 462 else 463 { 464 $phpbb_log->add('critical', $user->data['user_id'], $user->ip, 'LOG_REFERER_INVALID', false, array($this->referer)); 465 } 466 } 467 } 468 } 469 } 470 471 // If we reach here then no (valid) session exists. So we'll create a new one 472 return $this->session_create(); 473 } 474 475 /** 476 * Create a new session 477 * 478 * If upon trying to start a session we discover there is nothing existing we 479 * jump here. Additionally this method is called directly during login to regenerate 480 * the session for the specific user. In this method we carry out a number of tasks; 481 * garbage collection, (search)bot checking, banned user comparison. Basically 482 * though this method will result in a new session for a specific user. 483 */ 484 function session_create($user_id = false, $set_admin = false, $persist_login = false, $viewonline = true) 485 { 486 global $SID, $_SID, $db, $config, $cache, $phpbb_container, $phpbb_dispatcher; 487 488 $this->data = array(); 489 490 /* Garbage collection ... remove old sessions updating user information 491 // if necessary. It means (potentially) 11 queries but only infrequently 492 if ($this->time_now > $config['session_last_gc'] + $config['session_gc']) 493 { 494 $this->session_gc(); 495 }*/ 496 497 // Do we allow autologin on this board? No? Then override anything 498 // that may be requested here 499 if (!$config['allow_autologin']) 500 { 501 $this->cookie_data['k'] = $persist_login = false; 502 } 503 504 /** 505 * Here we do a bot check, oh er saucy! No, not that kind of bot 506 * check. We loop through the list of bots defined by the admin and 507 * see if we have any useragent and/or IP matches. If we do, this is a 508 * bot, act accordingly 509 */ 510 $bot = false; 511 $active_bots = $cache->obtain_bots(); 512 513 foreach ($active_bots as $row) 514 { 515 if ($row['bot_agent'] && preg_match('#' . str_replace('\*', '.*?', preg_quote($row['bot_agent'], '#')) . '#i', $this->browser)) 516 { 517 $bot = $row['user_id']; 518 } 519 520 // If ip is supplied, we will make sure the ip is matching too... 521 if ($row['bot_ip'] && ($bot || !$row['bot_agent'])) 522 { 523 // Set bot to false, then we only have to set it to true if it is matching 524 $bot = false; 525 526 foreach (explode(',', $row['bot_ip']) as $bot_ip) 527 { 528 $bot_ip = trim($bot_ip); 529 530 if (!$bot_ip) 531 { 532 continue; 533 } 534 535 if (strpos($this->ip, $bot_ip) === 0) 536 { 537 $bot = (int) $row['user_id']; 538 break; 539 } 540 } 541 } 542 543 if ($bot) 544 { 545 break; 546 } 547 } 548 549 /* @var $provider_collection \phpbb\auth\provider_collection */ 550 $provider_collection = $phpbb_container->get('auth.provider_collection'); 551 $provider = $provider_collection->get_provider(); 552 $this->data = $provider->autologin(); 553 554 if ($user_id !== false && isset($this->data['user_id']) && $this->data['user_id'] != $user_id) 555 { 556 $this->data = array(); 557 } 558 559 if (isset($this->data['user_id'])) 560 { 561 $this->cookie_data['k'] = ''; 562 $this->cookie_data['u'] = $this->data['user_id']; 563 } 564 565 // If we're presented with an autologin key we'll join against it. 566 // Else if we've been passed a user_id we'll grab data based on that 567 if (isset($this->cookie_data['k']) && $this->cookie_data['k'] && $this->cookie_data['u'] && empty($this->data)) 568 { 569 $sql = 'SELECT u.* 570 FROM ' . USERS_TABLE . ' u, ' . SESSIONS_KEYS_TABLE . ' k 571 WHERE u.user_id = ' . (int) $this->cookie_data['u'] . ' 572 AND u.user_type IN (' . USER_NORMAL . ', ' . USER_FOUNDER . ") 573 AND k.user_id = u.user_id 574 AND k.key_id = '" . $db->sql_escape(md5($this->cookie_data['k'])) . "'"; 575 $result = $db->sql_query($sql); 576 $user_data = $db->sql_fetchrow($result); 577 578 if ($user_id === false || (isset($user_data['user_id']) && $user_id == $user_data['user_id'])) 579 { 580 $this->data = $user_data; 581 $bot = false; 582 } 583 584 $db->sql_freeresult($result); 585 } 586 587 if ($user_id !== false && empty($this->data)) 588 { 589 $this->cookie_data['k'] = ''; 590 $this->cookie_data['u'] = $user_id; 591 592 $sql = 'SELECT * 593 FROM ' . USERS_TABLE . ' 594 WHERE user_id = ' . (int) $this->cookie_data['u'] . ' 595 AND user_type IN (' . USER_NORMAL . ', ' . USER_FOUNDER . ')'; 596 $result = $db->sql_query($sql); 597 $this->data = $db->sql_fetchrow($result); 598 $db->sql_freeresult($result); 599 $bot = false; 600 } 601 602 // Bot user, if they have a SID in the Request URI we need to get rid of it 603 // otherwise they'll index this page with the SID, duplicate content oh my! 604 if ($bot && isset($_GET['sid'])) 605 { 606 send_status_line(301, 'Moved Permanently'); 607 redirect(build_url(array('sid'))); 608 } 609 610 // If no data was returned one or more of the following occurred: 611 // Key didn't match one in the DB 612 // User does not exist 613 // User is inactive 614 // User is bot 615 if (!is_array($this->data) || !count($this->data)) 616 { 617 $this->cookie_data['k'] = ''; 618 $this->cookie_data['u'] = ($bot) ? $bot : ANONYMOUS; 619 620 if (!$bot) 621 { 622 $sql = 'SELECT * 623 FROM ' . USERS_TABLE . ' 624 WHERE user_id = ' . (int) $this->cookie_data['u']; 625 } 626 else 627 { 628 // We give bots always the same session if it is not yet expired. 629 $sql = 'SELECT u.*, s.* 630 FROM ' . USERS_TABLE . ' u 631 LEFT JOIN ' . SESSIONS_TABLE . ' s ON (s.session_user_id = u.user_id) 632 WHERE u.user_id = ' . (int) $bot; 633 } 634 635 $result = $db->sql_query($sql); 636 $this->data = $db->sql_fetchrow($result); 637 $db->sql_freeresult($result); 638 } 639 640 if ($this->data['user_id'] != ANONYMOUS && !$bot) 641 { 642 $this->data['session_last_visit'] = (isset($this->data['session_time']) && $this->data['session_time']) ? $this->data['session_time'] : (($this->data['user_lastvisit']) ? $this->data['user_lastvisit'] : time()); 643 } 644 else 645 { 646 $this->data['session_last_visit'] = $this->time_now; 647 } 648 649 // Force user id to be integer... 650 $this->data['user_id'] = (int) $this->data['user_id']; 651 652 // At this stage we should have a filled data array, defined cookie u and k data. 653 // data array should contain recent session info if we're a real user and a recent 654 // session exists in which case session_id will also be set 655 656 // Is user banned? Are they excluded? Won't return on ban, exists within method 657 $this->check_ban_for_current_session($config); 658 659 $this->data['is_registered'] = (!$bot && $this->data['user_id'] != ANONYMOUS && ($this->data['user_type'] == USER_NORMAL || $this->data['user_type'] == USER_FOUNDER)) ? true : false; 660 $this->data['is_bot'] = ($bot) ? true : false; 661 662 // If our friend is a bot, we re-assign a previously assigned session 663 if ($this->data['is_bot'] && $bot == $this->data['user_id'] && $this->data['session_id']) 664 { 665 // Only assign the current session if the ip, browser and forwarded_for match... 666 if (strpos($this->ip, ':') !== false && strpos($this->data['session_ip'], ':') !== false) 667 { 668 $s_ip = short_ipv6($this->data['session_ip'], $config['ip_check']); 669 $u_ip = short_ipv6($this->ip, $config['ip_check']); 670 } 671 else 672 { 673 $s_ip = implode('.', array_slice(explode('.', $this->data['session_ip']), 0, $config['ip_check'])); 674 $u_ip = implode('.', array_slice(explode('.', $this->ip), 0, $config['ip_check'])); 675 } 676 677 $s_browser = ($config['browser_check']) ? trim(strtolower(substr($this->data['session_browser'], 0, 149))) : ''; 678 $u_browser = ($config['browser_check']) ? trim(strtolower(substr($this->browser, 0, 149))) : ''; 679 680 $s_forwarded_for = ($config['forwarded_for_check']) ? substr($this->data['session_forwarded_for'], 0, 254) : ''; 681 $u_forwarded_for = ($config['forwarded_for_check']) ? substr($this->forwarded_for, 0, 254) : ''; 682 683 if ($u_ip === $s_ip && $s_browser === $u_browser && $s_forwarded_for === $u_forwarded_for) 684 { 685 $this->session_id = $this->data['session_id']; 686 687 // Only update session DB a minute or so after last update or if page changes 688 if ($this->time_now - $this->data['session_time'] > 60 || ($this->update_session_page && $this->data['session_page'] != $this->page['page'])) 689 { 690 // Update the last visit time 691 $sql = 'UPDATE ' . USERS_TABLE . ' 692 SET user_lastvisit = ' . (int) $this->data['session_time'] . ' 693 WHERE user_id = ' . (int) $this->data['user_id']; 694 $db->sql_query($sql); 695 } 696 697 $SID = '?sid='; 698 $_SID = ''; 699 return true; 700 } 701 else 702 { 703 // If the ip and browser does not match make sure we only have one bot assigned to one session 704 $db->sql_query('DELETE FROM ' . SESSIONS_TABLE . ' WHERE session_user_id = ' . $this->data['user_id']); 705 } 706 } 707 708 $session_autologin = (($this->cookie_data['k'] || $persist_login) && $this->data['is_registered']) ? true : false; 709 $set_admin = ($set_admin && $this->data['is_registered']) ? true : false; 710 711 // Create or update the session 712 $sql_ary = array( 713 'session_user_id' => (int) $this->data['user_id'], 714 'session_start' => (int) $this->time_now, 715 'session_last_visit' => (int) $this->data['session_last_visit'], 716 'session_time' => (int) $this->time_now, 717 'session_browser' => (string) trim(substr($this->browser, 0, 149)), 718 'session_forwarded_for' => (string) $this->forwarded_for, 719 'session_ip' => (string) $this->ip, 720 'session_autologin' => ($session_autologin) ? 1 : 0, 721 'session_admin' => ($set_admin) ? 1 : 0, 722 'session_viewonline' => ($viewonline) ? 1 : 0, 723 ); 724 725 if ($this->update_session_page) 726 { 727 $sql_ary['session_page'] = (string) substr($this->page['page'], 0, 199); 728 $sql_ary['session_forum_id'] = $this->page['forum']; 729 } 730 731 $db->sql_return_on_error(true); 732 733 $sql = 'DELETE 734 FROM ' . SESSIONS_TABLE . ' 735 WHERE session_id = \'' . $db->sql_escape($this->session_id) . '\' 736 AND session_user_id = ' . ANONYMOUS; 737 738 if (!defined('IN_ERROR_HANDLER') && (!$this->session_id || !$db->sql_query($sql) || !$db->sql_affectedrows())) 739 { 740 // Limit new sessions in 1 minute period (if required) 741 if (empty($this->data['session_time']) && $config['active_sessions']) 742 { 743 // $db->sql_return_on_error(false); 744 745 $sql = 'SELECT COUNT(session_id) AS sessions 746 FROM ' . SESSIONS_TABLE . ' 747 WHERE session_time >= ' . ($this->time_now - 60); 748 $result = $db->sql_query($sql); 749 $row = $db->sql_fetchrow($result); 750 $db->sql_freeresult($result); 751 752 if ((int) $row['sessions'] > (int) $config['active_sessions']) 753 { 754 send_status_line(503, 'Service Unavailable'); 755 trigger_error('BOARD_UNAVAILABLE'); 756 } 757 } 758 } 759 760 // Since we re-create the session id here, the inserted row must be unique. Therefore, we display potential errors. 761 // Commented out because it will not allow forums to update correctly 762 // $db->sql_return_on_error(false); 763 764 // Something quite important: session_page always holds the *last* page visited, except for the *first* visit. 765 // We are not able to simply have an empty session_page btw, therefore we need to tell phpBB how to detect this special case. 766 // If the session id is empty, we have a completely new one and will set an "identifier" here. This identifier is able to be checked later. 767 if (empty($this->data['session_id'])) 768 { 769 // This is a temporary variable, only set for the very first visit 770 $this->data['session_created'] = true; 771 } 772 773 $this->session_id = $this->data['session_id'] = md5(unique_id()); 774 775 $sql_ary['session_id'] = (string) $this->session_id; 776 $sql_ary['session_page'] = (string) substr($this->page['page'], 0, 199); 777 $sql_ary['session_forum_id'] = $this->page['forum']; 778 779 $sql = 'INSERT INTO ' . SESSIONS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary); 780 $db->sql_query($sql); 781 782 $db->sql_return_on_error(false); 783 784 // Regenerate autologin/persistent login key 785 if ($session_autologin) 786 { 787 $this->set_login_key(); 788 } 789 790 // refresh data 791 $SID = '?sid=' . $this->session_id; 792 $_SID = $this->session_id; 793 $this->data = array_merge($this->data, $sql_ary); 794 795 if (!$bot) 796 { 797 $cookie_expire = $this->time_now + (($config['max_autologin_time']) ? 86400 * (int) $config['max_autologin_time'] : 31536000); 798 799 $this->set_cookie('u', $this->cookie_data['u'], $cookie_expire); 800 $this->set_cookie('k', $this->cookie_data['k'], $cookie_expire); 801 $this->set_cookie('sid', $this->session_id, $cookie_expire); 802 803 unset($cookie_expire); 804 805 $sql = 'SELECT COUNT(session_id) AS sessions 806 FROM ' . SESSIONS_TABLE . ' 807 WHERE session_user_id = ' . (int) $this->data['user_id'] . ' 808 AND session_time >= ' . (int) ($this->time_now - (max((int) $config['session_length'], (int) $config['form_token_lifetime']))); 809 $result = $db->sql_query($sql); 810 $row = $db->sql_fetchrow($result); 811 $db->sql_freeresult($result); 812 813 if ((int) $row['sessions'] <= 1 || empty($this->data['user_form_salt'])) 814 { 815 $this->data['user_form_salt'] = unique_id(); 816 // Update the form key 817 $sql = 'UPDATE ' . USERS_TABLE . ' 818 SET user_form_salt = \'' . $db->sql_escape($this->data['user_form_salt']) . '\' 819 WHERE user_id = ' . (int) $this->data['user_id']; 820 $db->sql_query($sql); 821 } 822 } 823 else 824 { 825 $this->data['session_time'] = $this->data['session_last_visit'] = $this->time_now; 826 827 // Update the last visit time 828 $sql = 'UPDATE ' . USERS_TABLE . ' 829 SET user_lastvisit = ' . (int) $this->data['session_time'] . ' 830 WHERE user_id = ' . (int) $this->data['user_id']; 831 $db->sql_query($sql); 832 833 $SID = '?sid='; 834 $_SID = ''; 835 } 836 837 $session_data = $sql_ary; 838 /** 839 * Event to send new session data to extension 840 * Read-only event 841 * 842 * @event core.session_create_after 843 * @var array session_data Associative array of session keys to be updated 844 * @since 3.1.6-RC1 845 */ 846 $vars = array('session_data'); 847 extract($phpbb_dispatcher->trigger_event('core.session_create_after', compact($vars))); 848 unset($session_data); 849 850 return true; 851 } 852 853 /** 854 * Kills a session 855 * 856 * This method does what it says on the tin. It will delete a pre-existing session. 857 * It resets cookie information (destroying any autologin key within that cookie data) 858 * and update the users information from the relevant session data. It will then 859 * grab guest user information. 860 */ 861 function session_kill($new_session = true) 862 { 863 global $SID, $_SID, $db, $phpbb_container, $phpbb_dispatcher; 864 865 $sql = 'DELETE FROM ' . SESSIONS_TABLE . " 866 WHERE session_id = '" . $db->sql_escape($this->session_id) . "' 867 AND session_user_id = " . (int) $this->data['user_id']; 868 $db->sql_query($sql); 869 870 $user_id = (int) $this->data['user_id']; 871 $session_id = $this->session_id; 872 /** 873 * Event to send session kill information to extension 874 * Read-only event 875 * 876 * @event core.session_kill_after 877 * @var int user_id user_id of the session user. 878 * @var string session_id current user's session_id 879 * @var bool new_session should we create new session for user 880 * @since 3.1.6-RC1 881 */ 882 $vars = array('user_id', 'session_id', 'new_session'); 883 extract($phpbb_dispatcher->trigger_event('core.session_kill_after', compact($vars))); 884 unset($user_id); 885 unset($session_id); 886 887 // Allow connecting logout with external auth method logout 888 /* @var $provider_collection \phpbb\auth\provider_collection */ 889 $provider_collection = $phpbb_container->get('auth.provider_collection'); 890 $provider = $provider_collection->get_provider(); 891 $provider->logout($this->data, $new_session); 892 893 if ($this->data['user_id'] != ANONYMOUS) 894 { 895 // Delete existing session, update last visit info first! 896 if (!isset($this->data['session_time'])) 897 { 898 $this->data['session_time'] = time(); 899 } 900 901 $sql = 'UPDATE ' . USERS_TABLE . ' 902 SET user_lastvisit = ' . (int) $this->data['session_time'] . ' 903 WHERE user_id = ' . (int) $this->data['user_id']; 904 $db->sql_query($sql); 905 906 if ($this->cookie_data['k']) 907 { 908 $sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . ' 909 WHERE user_id = ' . (int) $this->data['user_id'] . " 910 AND key_id = '" . $db->sql_escape(md5($this->cookie_data['k'])) . "'"; 911 $db->sql_query($sql); 912 } 913 914 // Reset the data array 915 $this->data = array(); 916 917 $sql = 'SELECT * 918 FROM ' . USERS_TABLE . ' 919 WHERE user_id = ' . ANONYMOUS; 920 $result = $db->sql_query($sql); 921 $this->data = $db->sql_fetchrow($result); 922 $db->sql_freeresult($result); 923 } 924 925 $cookie_expire = $this->time_now - 31536000; 926 $this->set_cookie('u', '', $cookie_expire); 927 $this->set_cookie('k', '', $cookie_expire); 928 $this->set_cookie('sid', '', $cookie_expire); 929 unset($cookie_expire); 930 931 $SID = '?sid='; 932 $this->session_id = $_SID = ''; 933 934 // To make sure a valid session is created we create one for the anonymous user 935 if ($new_session) 936 { 937 $this->session_create(ANONYMOUS); 938 } 939 940 return true; 941 } 942 943 /** 944 * Session garbage collection 945 * 946 * This looks a lot more complex than it really is. Effectively we are 947 * deleting any sessions older than an admin definable limit. Due to the 948 * way in which we maintain session data we have to ensure we update user 949 * data before those sessions are destroyed. In addition this method 950 * removes autologin key information that is older than an admin defined 951 * limit. 952 */ 953 function session_gc() 954 { 955 global $db, $config, $phpbb_container, $phpbb_dispatcher; 956 957 if (!$this->time_now) 958 { 959 $this->time_now = time(); 960 } 961 962 /** 963 * Get expired sessions for registered users, only most recent for each user 964 * Inner SELECT gets most recent expired sessions for unique session_user_id 965 * Outer SELECT gets data for them 966 */ 967 $sql_select = 'SELECT s1.session_page, s1.session_user_id, s1.session_time AS recent_time 968 FROM ' . SESSIONS_TABLE . ' AS s1 969 INNER JOIN ( 970 SELECT session_user_id, MAX(session_time) AS recent_time 971 FROM ' . SESSIONS_TABLE . ' 972 WHERE session_time < ' . ($this->time_now - (int) $config['session_length']) . ' 973 AND session_user_id <> ' . ANONYMOUS . ' 974 GROUP BY session_user_id 975 ) AS s2 976 ON s1.session_user_id = s2.session_user_id 977 AND s1.session_time = s2.recent_time'; 978 979 switch ($db->get_sql_layer()) 980 { 981 case 'sqlite3': 982 if (phpbb_version_compare($db->sql_server_info(true), '3.8.3', '>=')) 983 { 984 // For SQLite versions 3.8.3+ which support Common Table Expressions (CTE) 985 $sql = "WITH s3 (session_page, session_user_id, session_time) AS ($sql_select) 986 UPDATE " . USERS_TABLE . ' 987 SET (user_lastpage, user_lastvisit) = (SELECT session_page, session_time FROM s3 WHERE session_user_id = user_id) 988 WHERE EXISTS (SELECT session_user_id FROM s3 WHERE session_user_id = user_id)'; 989 $db->sql_query($sql); 990 991 break; 992 } 993 994 // No break, for SQLite versions prior to 3.8.3 and Oracle 995 case 'oracle': 996 $result = $db->sql_query($sql_select); 997 while ($row = $db->sql_fetchrow($result)) 998 { 999 $sql = 'UPDATE ' . USERS_TABLE . ' 1000 SET user_lastvisit = ' . (int) $row['recent_time'] . ", user_lastpage = '" . $db->sql_escape($row['session_page']) . "' 1001 WHERE user_id = " . (int) $row['session_user_id']; 1002 $db->sql_query($sql); 1003 } 1004 $db->sql_freeresult($result); 1005 break; 1006 1007 case 'mysqli': 1008 $sql = 'UPDATE ' . USERS_TABLE . " u, 1009 ($sql_select) s3 1010 SET u.user_lastvisit = s3.recent_time, u.user_lastpage = s3.session_page 1011 WHERE u.user_id = s3.session_user_id"; 1012 $db->sql_query($sql); 1013 break; 1014 1015 default: 1016 $sql = 'UPDATE ' . USERS_TABLE . " 1017 SET user_lastvisit = s3.recent_time, user_lastpage = s3.session_page 1018 FROM ($sql_select) s3 1019 WHERE user_id = s3.session_user_id"; 1020 $db->sql_query($sql); 1021 break; 1022 } 1023 1024 // Delete all expired sessions 1025 $sql = 'DELETE FROM ' . SESSIONS_TABLE . ' 1026 WHERE session_time < ' . ($this->time_now - (int) $config['session_length']); 1027 $db->sql_query($sql); 1028 1029 // Update gc timer 1030 $config->set('session_last_gc', $this->time_now, false); 1031 1032 if ($config['max_autologin_time']) 1033 { 1034 $sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . ' 1035 WHERE last_login < ' . (time() - (86400 * (int) $config['max_autologin_time'])); 1036 $db->sql_query($sql); 1037 } 1038 1039 // only called from CRON; should be a safe workaround until the infrastructure gets going 1040 /* @var \phpbb\captcha\factory $captcha_factory */ 1041 $captcha_factory = $phpbb_container->get('captcha.factory'); 1042 $captcha_factory->garbage_collect($config['captcha_plugin']); 1043 1044 $sql = 'DELETE FROM ' . LOGIN_ATTEMPT_TABLE . ' 1045 WHERE attempt_time < ' . (time() - (int) $config['ip_login_limit_time']); 1046 $db->sql_query($sql); 1047 1048 /** 1049 * Event to trigger extension on session_gc 1050 * 1051 * @event core.session_gc_after 1052 * @since 3.1.6-RC1 1053 */ 1054 $phpbb_dispatcher->dispatch('core.session_gc_after'); 1055 1056 return; 1057 } 1058 1059 /** 1060 * Sets a cookie 1061 * 1062 * Sets a cookie of the given name with the specified data for the given length of time. If no time is specified, a session cookie will be set. 1063 * 1064 * @param string $name Name of the cookie, will be automatically prefixed with the phpBB cookie name. track becomes [cookie_name]_track then. 1065 * @param string $cookiedata The data to hold within the cookie 1066 * @param int $cookietime The expiration time as UNIX timestamp. If 0 is provided, a session cookie is set. 1067 * @param bool $httponly Use HttpOnly. Defaults to true. Use false to make cookie accessible by client-side scripts. 1068 */ 1069 function set_cookie($name, $cookiedata, $cookietime, $httponly = true) 1070 { 1071 global $config, $phpbb_dispatcher; 1072 1073 // If headers are already set, we just return 1074 if (headers_sent()) 1075 { 1076 return; 1077 } 1078 1079 $disable_cookie = false; 1080 /** 1081 * Event to modify or disable setting cookies 1082 * 1083 * @event core.set_cookie 1084 * @var bool disable_cookie Set to true to disable setting this cookie 1085 * @var string name Name of the cookie 1086 * @var string cookiedata The data to hold within the cookie 1087 * @var int cookietime The expiration time as UNIX timestamp 1088 * @var bool httponly Use HttpOnly? 1089 * @since 3.2.9-RC1 1090 */ 1091 $vars = array( 1092 'disable_cookie', 1093 'name', 1094 'cookiedata', 1095 'cookietime', 1096 'httponly', 1097 ); 1098 extract($phpbb_dispatcher->trigger_event('core.set_cookie', compact($vars))); 1099 1100 if ($disable_cookie) 1101 { 1102 return; 1103 } 1104 1105 $name_data = rawurlencode($config['cookie_name'] . '_' . $name) . '=' . rawurlencode($cookiedata); 1106 $expire = gmdate('D, d-M-Y H:i:s \\G\\M\\T', $cookietime); 1107 $domain = (!$config['cookie_domain'] || $config['cookie_domain'] == '127.0.0.1' || strpos($config['cookie_domain'], '.') === false) ? '' : '; domain=' . $config['cookie_domain']; 1108 1109 header('Set-Cookie: ' . $name_data . (($cookietime) ? '; expires=' . $expire : '') . '; path=' . $config['cookie_path'] . $domain . ((!$config['cookie_secure']) ? '' : '; secure') . ';' . (($httponly) ? ' HttpOnly' : ''), false); 1110 } 1111 1112 /** 1113 * Check for banned user 1114 * 1115 * Checks whether the supplied user is banned by id, ip or email. If no parameters 1116 * are passed to the method pre-existing session data is used. 1117 * 1118 * @param int|false $user_id The user id 1119 * @param mixed $user_ips Can contain a string with one IP or an array of multiple IPs 1120 * @param string|false $user_email The user email 1121 * @param bool $return If $return is false this routine does not return on finding a banned user, 1122 * it outputs a relevant message and stops execution. 1123 */ 1124 function check_ban($user_id = false, $user_ips = false, $user_email = false, $return = false) 1125 { 1126 global $config, $db, $phpbb_dispatcher; 1127 1128 if (defined('IN_CHECK_BAN') || defined('SKIP_CHECK_BAN')) 1129 { 1130 return; 1131 } 1132 1133 $banned = false; 1134 $cache_ttl = 3600; 1135 $where_sql = array(); 1136 1137 $sql = 'SELECT ban_ip, ban_userid, ban_email, ban_exclude, ban_give_reason, ban_end 1138 FROM ' . BANLIST_TABLE . ' 1139 WHERE '; 1140 1141 // Determine which entries to check, only return those 1142 if ($user_email === false) 1143 { 1144 $where_sql[] = "ban_email = ''"; 1145 } 1146 1147 if ($user_ips === false) 1148 { 1149 $where_sql[] = "(ban_ip = '' OR ban_exclude = 1)"; 1150 } 1151 1152 if ($user_id === false) 1153 { 1154 $where_sql[] = '(ban_userid = 0 OR ban_exclude = 1)'; 1155 } 1156 else 1157 { 1158 $cache_ttl = ($user_id == ANONYMOUS) ? 3600 : 0; 1159 $_sql = '(ban_userid = ' . $user_id; 1160 1161 if ($user_email !== false) 1162 { 1163 $_sql .= " OR ban_email <> ''"; 1164 } 1165 1166 if ($user_ips !== false) 1167 { 1168 $_sql .= " OR ban_ip <> ''"; 1169 } 1170 1171 $_sql .= ')'; 1172 1173 $where_sql[] = $_sql; 1174 } 1175 1176 $sql .= (count($where_sql)) ? implode(' AND ', $where_sql) : ''; 1177 $result = $db->sql_query($sql, $cache_ttl); 1178 1179 $ban_triggered_by = 'user'; 1180 while ($row = $db->sql_fetchrow($result)) 1181 { 1182 if ($row['ban_end'] && $row['ban_end'] < time()) 1183 { 1184 continue; 1185 } 1186 1187 $ip_banned = false; 1188 if (!empty($row['ban_ip'])) 1189 { 1190 if (!is_array($user_ips)) 1191 { 1192 $ip_banned = preg_match('#^' . str_replace('\*', '.*?', preg_quote($row['ban_ip'], '#')) . '$#i', $user_ips); 1193 } 1194 else 1195 { 1196 foreach ($user_ips as $user_ip) 1197 { 1198 if (preg_match('#^' . str_replace('\*', '.*?', preg_quote($row['ban_ip'], '#')) . '$#i', $user_ip)) 1199 { 1200 $ip_banned = true; 1201 break; 1202 } 1203 } 1204 } 1205 } 1206 1207 if ((!empty($row['ban_userid']) && intval($row['ban_userid']) == $user_id) || 1208 $ip_banned || 1209 (!empty($row['ban_email']) && preg_match('#^' . str_replace('\*', '.*?', preg_quote($row['ban_email'], '#')) . '$#i', $user_email))) 1210 { 1211 if (!empty($row['ban_exclude'])) 1212 { 1213 $banned = false; 1214 break; 1215 } 1216 else 1217 { 1218 $banned = true; 1219 $ban_row = $row; 1220 1221 if (!empty($row['ban_userid']) && intval($row['ban_userid']) == $user_id) 1222 { 1223 $ban_triggered_by = 'user'; 1224 } 1225 else if ($ip_banned) 1226 { 1227 $ban_triggered_by = 'ip'; 1228 } 1229 else 1230 { 1231 $ban_triggered_by = 'email'; 1232 } 1233 1234 // Don't break. Check if there is an exclude rule for this user 1235 } 1236 } 1237 } 1238 $db->sql_freeresult($result); 1239 1240 /** 1241 * Event to set custom ban type 1242 * 1243 * @event core.session_set_custom_ban 1244 * @var bool return If $return is false this routine does not return on finding a banned user, it outputs a relevant message and stops execution 1245 * @var bool banned Check if user already banned 1246 * @var array|false ban_row Ban data 1247 * @var string ban_triggered_by Method that caused ban, can be your custom method 1248 * @since 3.1.3-RC1 1249 */ 1250 $ban_row = isset($ban_row) ? $ban_row : false; 1251 $vars = array('return', 'banned', 'ban_row', 'ban_triggered_by'); 1252 extract($phpbb_dispatcher->trigger_event('core.session_set_custom_ban', compact($vars))); 1253 1254 if ($banned && !$return) 1255 { 1256 global $phpbb_root_path, $phpEx; 1257 1258 // If the session is empty we need to create a valid one... 1259 if (empty($this->session_id)) 1260 { 1261 // This seems to be no longer needed? - #14971 1262 // $this->session_create(ANONYMOUS); 1263 } 1264 1265 // Initiate environment ... since it won't be set at this stage 1266 $this->setup(); 1267 1268 // Logout the user, banned users are unable to use the normal 'logout' link 1269 if ($this->data['user_id'] != ANONYMOUS) 1270 { 1271 $this->session_kill(); 1272 } 1273 1274 // We show a login box here to allow founders accessing the board if banned by IP 1275 if (defined('IN_LOGIN') && $this->data['user_id'] == ANONYMOUS) 1276 { 1277 $this->setup('ucp'); 1278 $this->data['is_registered'] = $this->data['is_bot'] = false; 1279 1280 // Set as a precaution to allow login_box() handling this case correctly as well as this function not being executed again. 1281 define('IN_CHECK_BAN', 1); 1282 1283 login_box("index.$phpEx"); 1284 1285 // The false here is needed, else the user is able to circumvent the ban. 1286 $this->session_kill(false); 1287 } 1288 1289 // Ok, we catch the case of an empty session id for the anonymous user... 1290 // This can happen if the user is logging in, banned by username and the login_box() being called "again". 1291 if (empty($this->session_id) && defined('IN_CHECK_BAN')) 1292 { 1293 $this->session_create(ANONYMOUS); 1294 } 1295 1296 // Determine which message to output 1297 $till_date = ($ban_row['ban_end']) ? $this->format_date($ban_row['ban_end']) : ''; 1298 $message = ($ban_row['ban_end']) ? 'BOARD_BAN_TIME' : 'BOARD_BAN_PERM'; 1299 1300 $contact_link = phpbb_get_board_contact_link($config, $phpbb_root_path, $phpEx); 1301 $message = sprintf($this->lang[$message], $till_date, '<a href="' . $contact_link . '">', '</a>'); 1302 $message .= ($ban_row['ban_give_reason']) ? '<br /><br />' . sprintf($this->lang['BOARD_BAN_REASON'], $ban_row['ban_give_reason']) : ''; 1303 $message .= '<br /><br /><em>' . $this->lang['BAN_TRIGGERED_BY_' . strtoupper($ban_triggered_by)] . '</em>'; 1304 1305 // A very special case... we are within the cron script which is not supposed to print out the ban message... show blank page 1306 if (defined('IN_CRON')) 1307 { 1308 garbage_collection(); 1309 exit_handler(); 1310 exit; 1311 } 1312 1313 // To circumvent session_begin returning a valid value and the check_ban() not called on second page view, we kill the session again 1314 $this->session_kill(false); 1315 1316 trigger_error($message); 1317 } 1318 1319 if (!empty($ban_row)) 1320 { 1321 $ban_row['ban_triggered_by'] = $ban_triggered_by; 1322 } 1323 1324 return ($banned && $ban_row) ? $ban_row : $banned; 1325 } 1326 1327 /** 1328 * Check the current session for bans 1329 * 1330 * @return true if session user is banned. 1331 */ 1332 protected function check_ban_for_current_session($config) 1333 { 1334 if (!defined('SKIP_CHECK_BAN') && $this->data['user_type'] != USER_FOUNDER) 1335 { 1336 if (!$config['forwarded_for_check']) 1337 { 1338 $this->check_ban($this->data['user_id'], $this->ip); 1339 } 1340 else 1341 { 1342 $ips = explode(' ', $this->forwarded_for); 1343 $ips[] = $this->ip; 1344 $this->check_ban($this->data['user_id'], $ips); 1345 } 1346 } 1347 } 1348 1349 /** 1350 * Check if ip is blacklisted by Spamhaus SBL 1351 * 1352 * Disables DNSBL setting if errors are returned by Spamhaus due to a policy violation. 1353 * https://www.spamhaus.com/product/help-for-spamhaus-public-mirror-users/ 1354 * 1355 * @param string $dnsbl the blacklist to check against 1356 * @param string|false $ip the IPv4 address to check 1357 * 1358 * @return bool true if listed in spamhaus database, false if not 1359 */ 1360 function check_dnsbl_spamhaus($dnsbl, $ip = false) 1361 { 1362 global $config, $phpbb_log; 1363 1364 if ($ip === false) 1365 { 1366 $ip = $this->ip; 1367 } 1368 1369 // Spamhaus does not support IPv6 addresses. 1370 if (strpos($ip, ':') !== false) 1371 { 1372 return false; 1373 } 1374 1375 if ($ip) 1376 { 1377 $quads = explode('.', $ip); 1378 $reverse_ip = $quads[3] . '.' . $quads[2] . '.' . $quads[1] . '.' . $quads[0]; 1379 1380 $records = dns_get_record($reverse_ip . '.' . $dnsbl . '.', DNS_A); 1381 if (empty($records)) 1382 { 1383 return false; 1384 } 1385 else 1386 { 1387 $error = false; 1388 foreach ($records as $record) 1389 { 1390 if ($record['ip'] == '127.255.255.254') 1391 { 1392 $error = 'LOG_SPAMHAUS_OPEN_RESOLVER'; 1393 break; 1394 } 1395 else if ($record['ip'] == '127.255.255.255') 1396 { 1397 $error = 'LOG_SPAMHAUS_VOLUME_LIMIT'; 1398 break; 1399 } 1400 } 1401 1402 if ($error !== false) 1403 { 1404 $config->set('check_dnsbl', 0); 1405 $phpbb_log->add('critical', $this->data['user_id'], $ip, $error); 1406 } 1407 else 1408 { 1409 // The existence of a non-error A record means it's a hit 1410 return true; 1411 } 1412 } 1413 } 1414 1415 return false; 1416 } 1417 1418 /** 1419 * Checks if an IPv4 address is in a specified DNS blacklist 1420 * 1421 * Only checks if a record is returned or not. 1422 * 1423 * @param string $dnsbl the blacklist to check against 1424 * @param string|false $ip the IPv4 address to check 1425 * 1426 * @return bool true if record is returned, false if not 1427 */ 1428 function check_dnsbl_ipv4_generic($dnsbl, $ip = false) 1429 { 1430 if ($ip === false) 1431 { 1432 $ip = $this->ip; 1433 } 1434 1435 // This function does not support IPv6 addresses. 1436 if (strpos($ip, ':') !== false) 1437 { 1438 return false; 1439 } 1440 1441 $quads = explode('.', $ip); 1442 $reverse_ip = $quads[3] . '.' . $quads[2] . '.' . $quads[1] . '.' . $quads[0]; 1443 1444 if (checkdnsrr($reverse_ip . '.' . $dnsbl . '.', 'A') === true) 1445 { 1446 return true; 1447 } 1448 1449 return false; 1450 } 1451 1452 /** 1453 * Check if ip is blacklisted 1454 * This should be called only where absolutely necessary 1455 * 1456 * Only IPv4 (rbldns does not support AAAA records/IPv6 lookups) 1457 * 1458 * @author satmd (from the php manual) 1459 * @param string $mode register/post - spamcop for example is omitted for posting 1460 * @param string|false $ip the IPv4 address to check 1461 * 1462 * @return false if ip is not blacklisted, else an array([checked server], [lookup]) 1463 */ 1464 function check_dnsbl($mode, $ip = false) 1465 { 1466 if ($ip === false) 1467 { 1468 $ip = $this->ip; 1469 } 1470 1471 // Neither Spamhaus nor Spamcop supports IPv6 addresses. 1472 if (strpos($ip, ':') !== false) 1473 { 1474 return false; 1475 } 1476 1477 $dnsbl_check = array( 1478 'sbl.spamhaus.org' => ['http://www.spamhaus.org/query/bl?ip=', 'check_dnsbl_spamhaus'], 1479 ); 1480 1481 if ($mode == 'register') 1482 { 1483 $dnsbl_check['bl.spamcop.net'] = ['http://spamcop.net/bl.shtml?', 'check_dnsbl_ipv4_generic']; 1484 } 1485 1486 if ($ip) 1487 { 1488 // Need to be listed on all servers... 1489 $listed = true; 1490 $info = array(); 1491 1492 foreach ($dnsbl_check as $dnsbl => $lookup) 1493 { 1494 if (call_user_func(array($this, $lookup[1]), $dnsbl, $ip) === true) 1495 { 1496 $info = array($dnsbl, $lookup[0] . $ip); 1497 } 1498 else 1499 { 1500 $listed = false; 1501 } 1502 } 1503 1504 if ($listed) 1505 { 1506 return $info; 1507 } 1508 } 1509 1510 return false; 1511 } 1512 1513 /** 1514 * Check if URI is blacklisted 1515 * This should be called only where absolutely necessary, for example on the submitted website field 1516 * This function is not in use at the moment and is only included for testing purposes, it may not work at all! 1517 * This means it is untested at the moment and therefore commented out 1518 * 1519 * @param string $uri URI to check 1520 * @return true if uri is on blacklist, else false. Only blacklist is checked (~zero FP), no grey lists 1521 function check_uribl($uri) 1522 { 1523 // Normally parse_url() is not intended to parse uris 1524 // We need to get the top-level domain name anyway... change. 1525 $uri = parse_url($uri); 1526 1527 if ($uri === false || empty($uri['host'])) 1528 { 1529 return false; 1530 } 1531 1532 $uri = trim($uri['host']); 1533 1534 if ($uri) 1535 { 1536 // One problem here... the return parameter for the "windows" method is different from what 1537 // we expect... this may render this check useless... 1538 if (checkdnsrr($uri . '.multi.uribl.com.', 'A') === true) 1539 { 1540 return true; 1541 } 1542 } 1543 1544 return false; 1545 } 1546 */ 1547 1548 /** 1549 * Set/Update a persistent login key 1550 * 1551 * This method creates or updates a persistent session key. When a user makes 1552 * use of persistent (formerly auto-) logins a key is generated and stored in the 1553 * DB. When they revisit with the same key it's automatically updated in both the 1554 * DB and cookie. Multiple keys may exist for each user representing different 1555 * browsers or locations. As with _any_ non-secure-socket no passphrase login this 1556 * remains vulnerable to exploit. 1557 */ 1558 function set_login_key($user_id = false, $key = false, $user_ip = false) 1559 { 1560 global $db, $phpbb_dispatcher; 1561 1562 $user_id = ($user_id === false) ? $this->data['user_id'] : $user_id; 1563 $user_ip = ($user_ip === false) ? $this->ip : $user_ip; 1564 $key = ($key === false) ? (($this->cookie_data['k']) ? $this->cookie_data['k'] : false) : $key; 1565 1566 $key_id = unique_id(hexdec(substr($this->session_id, 0, 8))); 1567 1568 $sql_ary = array( 1569 'key_id' => (string) md5($key_id), 1570 'last_ip' => (string) $user_ip, 1571 'last_login' => (int) time() 1572 ); 1573 1574 if (!$key) 1575 { 1576 $sql_ary += array( 1577 'user_id' => (int) $user_id 1578 ); 1579 } 1580 1581 if ($key) 1582 { 1583 $sql = 'UPDATE ' . SESSIONS_KEYS_TABLE . ' 1584 SET ' . $db->sql_build_array('UPDATE', $sql_ary) . ' 1585 WHERE user_id = ' . (int) $user_id . " 1586 AND key_id = '" . $db->sql_escape(md5($key)) . "'"; 1587 } 1588 else 1589 { 1590 $sql = 'INSERT INTO ' . SESSIONS_KEYS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary); 1591 } 1592 1593 /** 1594 * Event to adjust autologin keys process 1595 * 1596 * @event core.set_login_key 1597 * @var string|false key Current autologin key if exists, false otherwise 1598 * @var string key_id New autologin key 1599 * @var string sql SQL query to update/insert autologin key 1600 * @var array sql_ary Aray with autologin key data 1601 * @var int user_id Current user's ID 1602 * @var string user_ip Current user's IP address 1603 * @since 3.3.2-RC1 1604 */ 1605 $vars = [ 1606 'key', 1607 'key_id', 1608 'sql', 1609 'sql_ary', 1610 'user_id', 1611 'user_ip', 1612 ]; 1613 extract($phpbb_dispatcher->trigger_event('core.set_login_key', compact($vars))); 1614 1615 $db->sql_query($sql); 1616 1617 $this->cookie_data['k'] = $key_id; 1618 1619 return false; 1620 } 1621 1622 /** 1623 * Reset all login keys for the specified user 1624 * 1625 * This method removes all current login keys for a specified (or the current) 1626 * user. It will be called on password change to render old keys unusable 1627 */ 1628 function reset_login_keys($user_id = false) 1629 { 1630 global $db; 1631 1632 $user_id = ($user_id === false) ? (int) $this->data['user_id'] : (int) $user_id; 1633 1634 $sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . ' 1635 WHERE user_id = ' . (int) $user_id; 1636 $db->sql_query($sql); 1637 1638 // If the user is logged in, update last visit info first before deleting sessions 1639 $sql = 'SELECT session_time, session_page 1640 FROM ' . SESSIONS_TABLE . ' 1641 WHERE session_user_id = ' . (int) $user_id . ' 1642 ORDER BY session_time DESC'; 1643 $result = $db->sql_query_limit($sql, 1); 1644 $row = $db->sql_fetchrow($result); 1645 $db->sql_freeresult($result); 1646 1647 if ($row) 1648 { 1649 $sql = 'UPDATE ' . USERS_TABLE . ' 1650 SET user_lastvisit = ' . (int) $row['session_time'] . ", user_lastpage = '" . $db->sql_escape($row['session_page']) . "' 1651 WHERE user_id = " . (int) $user_id; 1652 $db->sql_query($sql); 1653 } 1654 1655 // Let's also clear any current sessions for the specified user_id 1656 // If it's the current user then we'll leave this session intact 1657 $sql_where = 'session_user_id = ' . (int) $user_id; 1658 $sql_where .= ($user_id === (int) $this->data['user_id']) ? " AND session_id <> '" . $db->sql_escape($this->session_id) . "'" : ''; 1659 1660 $sql = 'DELETE FROM ' . SESSIONS_TABLE . " 1661 WHERE $sql_where"; 1662 $db->sql_query($sql); 1663 1664 // We're changing the password of the current user and they have a key 1665 // Lets regenerate it to be safe 1666 if ($user_id === (int) $this->data['user_id'] && $this->cookie_data['k']) 1667 { 1668 $this->set_login_key($user_id); 1669 } 1670 } 1671 1672 1673 /** 1674 * Check if the request originated from the same page. 1675 * @param bool $check_script_path If true, the path will be checked as well 1676 */ 1677 function validate_referer($check_script_path = false) 1678 { 1679 global $config, $request; 1680 1681 // no referer - nothing to validate, user's fault for turning it off (we only check on POST; so meta can't be the reason) 1682 if (empty($this->referer) || empty($this->host)) 1683 { 1684 return true; 1685 } 1686 1687 $host = htmlspecialchars($this->host, ENT_COMPAT); 1688 $ref = substr($this->referer, strpos($this->referer, '://') + 3); 1689 1690 if (!(stripos($ref, $host) === 0) && (!$config['force_server_vars'] || !(stripos($ref, $config['server_name']) === 0))) 1691 { 1692 return false; 1693 } 1694 else if ($check_script_path && rtrim($this->page['root_script_path'], '/') !== '') 1695 { 1696 $ref = substr($ref, strlen($host)); 1697 $server_port = $request->server('SERVER_PORT', 0); 1698 1699 if ($server_port !== 80 && $server_port !== 443 && stripos($ref, ":$server_port") === 0) 1700 { 1701 $ref = substr($ref, strlen(":$server_port")); 1702 } 1703 1704 if (!(stripos(rtrim($ref, '/'), rtrim($this->page['root_script_path'], '/')) === 0)) 1705 { 1706 return false; 1707 } 1708 } 1709 1710 return true; 1711 } 1712 1713 1714 function unset_admin() 1715 { 1716 global $db; 1717 $sql = 'UPDATE ' . SESSIONS_TABLE . ' 1718 SET session_admin = 0 1719 WHERE session_id = \'' . $db->sql_escape($this->session_id) . '\''; 1720 $db->sql_query($sql); 1721 } 1722 1723 /** 1724 * Update the session data 1725 * 1726 * @param array $session_data associative array of session keys to be updated 1727 * @param string $session_id optional session_id, defaults to current user's session_id 1728 */ 1729 public function update_session($session_data, $session_id = null) 1730 { 1731 global $db, $phpbb_dispatcher; 1732 1733 $session_id = ($session_id) ? $session_id : $this->session_id; 1734 1735 $sql = 'UPDATE ' . SESSIONS_TABLE . ' SET ' . $db->sql_build_array('UPDATE', $session_data) . " 1736 WHERE session_id = '" . $db->sql_escape($session_id) . "'"; 1737 $db->sql_query($sql); 1738 1739 /** 1740 * Event to send update session information to extension 1741 * Read-only event 1742 * 1743 * @event core.update_session_after 1744 * @var array session_data Associative array of session keys to be updated 1745 * @var string session_id current user's session_id 1746 * @since 3.1.6-RC1 1747 */ 1748 $vars = array('session_data', 'session_id'); 1749 extract($phpbb_dispatcher->trigger_event('core.update_session_after', compact($vars))); 1750 } 1751 1752 public function update_session_infos() 1753 { 1754 global $config, $db, $request; 1755 1756 // No need to update if it's a new session. Informations are already inserted by session_create() 1757 if (isset($this->data['session_created']) && $this->data['session_created']) 1758 { 1759 return; 1760 } 1761 1762 // Do not update the session page for ajax requests, so the view online still works as intended 1763 $page_changed = $this->update_session_page && (!isset($this->data['session_page']) || $this->data['session_page'] != $this->page['page']) && !$request->is_ajax(); 1764 1765 // Only update session DB a minute or so after last update or if page changes 1766 if ($this->time_now - (isset($this->data['session_time']) ? $this->data['session_time'] : 0) > 60 || $page_changed) 1767 { 1768 $sql_ary = array('session_time' => $this->time_now); 1769 1770 if ($page_changed) 1771 { 1772 $sql_ary['session_page'] = substr($this->page['page'], 0, 199); 1773 $sql_ary['session_forum_id'] = $this->page['forum']; 1774 } 1775 1776 $db->sql_return_on_error(true); 1777 1778 $this->update_session($sql_ary); 1779 1780 $db->sql_return_on_error(false); 1781 1782 $this->data = array_merge($this->data, $sql_ary); 1783 1784 if ($this->data['user_id'] != ANONYMOUS && isset($config['new_member_post_limit']) && $this->data['user_new'] && $config['new_member_post_limit'] <= $this->data['user_posts']) 1785 { 1786 $this->leave_newly_registered(); 1787 } 1788 } 1789 } 1790 1791 /** 1792 * Get user ID 1793 * 1794 * @return int User ID 1795 */ 1796 public function id() : int 1797 { 1798 return isset($this->data['user_id']) ? (int) $this->data['user_id'] : ANONYMOUS; 1799 } 1800 }
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| Generated: Wed Feb 22 20:16:20 2023 | Cross-referenced by PHPXref 0.7.1 |