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1 <?php 2 /** 3 * 4 * @package phpBB3 5 * @version $Id$ 6 * @copyright (c) 2005 phpBB Group 7 * @license http://opensource.org/licenses/gpl-license.php GNU Public License 8 * 9 */ 10 11 /** 12 * @ignore 13 */ 14 define('IN_PHPBB', true); 15 $phpbb_root_path = (defined('PHPBB_ROOT_PATH')) ? PHPBB_ROOT_PATH : './../'; 16 $phpEx = substr(strrchr(__FILE__, '.'), 1); 17 18 19 // Thank you sun. 20 if (isset($_SERVER['CONTENT_TYPE'])) 21 { 22 if ($_SERVER['CONTENT_TYPE'] === 'application/x-java-archive') 23 { 24 exit; 25 } 26 } 27 else if (isset($_SERVER['HTTP_USER_AGENT']) && strpos($_SERVER['HTTP_USER_AGENT'], 'Java') !== false) 28 { 29 exit; 30 } 31 32 if (isset($_GET['avatar'])) 33 { 34 require($phpbb_root_path . 'includes/startup.' . $phpEx); 35 require($phpbb_root_path . 'config.' . $phpEx); 36 37 if (!defined('PHPBB_INSTALLED') || empty($dbms) || empty($acm_type)) 38 { 39 exit; 40 } 41 42 require($phpbb_root_path . 'includes/acm/acm_' . $acm_type . '.' . $phpEx); 43 require($phpbb_root_path . 'includes/cache.' . $phpEx); 44 require($phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx); 45 require($phpbb_root_path . 'includes/constants.' . $phpEx); 46 require($phpbb_root_path . 'includes/functions.' . $phpEx); 47 48 $db = new $sql_db(); 49 $cache = new cache(); 50 51 // Connect to DB 52 if (!@$db->sql_connect($dbhost, $dbuser, $dbpasswd, $dbname, $dbport, false, false)) 53 { 54 exit; 55 } 56 unset($dbpasswd); 57 58 // worst-case default 59 $browser = (!empty($_SERVER['HTTP_USER_AGENT'])) ? htmlspecialchars((string) $_SERVER['HTTP_USER_AGENT']) : 'msie 6.0'; 60 61 $config = $cache->obtain_config(); 62 $filename = request_var('avatar', ''); 63 $avatar_group = false; 64 $exit = false; 65 66 if (isset($filename[0]) && $filename[0] === 'g') 67 { 68 $avatar_group = true; 69 $filename = substr($filename, 1); 70 } 71 72 // '==' is not a bug - . as the first char is as bad as no dot at all 73 if (strpos($filename, '.') == false) 74 { 75 send_status_line(403, 'Forbidden'); 76 $exit = true; 77 } 78 79 if (!$exit) 80 { 81 $ext = substr(strrchr($filename, '.'), 1); 82 $stamp = (int) substr(stristr($filename, '_'), 1); 83 $filename = (int) $filename; 84 $exit = set_modified_headers($stamp, $browser); 85 } 86 if (!$exit && !in_array($ext, array('png', 'gif', 'jpg', 'jpeg'))) 87 { 88 // no way such an avatar could exist. They are not following the rules, stop the show. 89 send_status_line(403, 'Forbidden'); 90 $exit = true; 91 } 92 93 94 if (!$exit) 95 { 96 if (!$filename) 97 { 98 // no way such an avatar could exist. They are not following the rules, stop the show. 99 send_status_line(403, 'Forbidden'); 100 } 101 else 102 { 103 send_avatar_to_browser(($avatar_group ? 'g' : '') . $filename . '.' . $ext, $browser); 104 } 105 } 106 file_gc(); 107 } 108 109 // implicit else: we are not in avatar mode 110 include($phpbb_root_path . 'common.' . $phpEx); 111 112 $download_id = request_var('id', 0); 113 $mode = request_var('mode', ''); 114 $thumbnail = request_var('t', false); 115 116 // Start session management, do not update session page. 117 $user->session_begin(false); 118 $auth->acl($user->data); 119 $user->setup('viewtopic'); 120 121 if (!$download_id) 122 { 123 send_status_line(404, 'Not Found'); 124 trigger_error('NO_ATTACHMENT_SELECTED'); 125 } 126 127 if (!$config['allow_attachments'] && !$config['allow_pm_attach']) 128 { 129 send_status_line(404, 'Not Found'); 130 trigger_error('ATTACHMENT_FUNCTIONALITY_DISABLED'); 131 } 132 133 $sql = 'SELECT attach_id, in_message, post_msg_id, extension, is_orphan, poster_id, filetime 134 FROM ' . ATTACHMENTS_TABLE . " 135 WHERE attach_id = $download_id"; 136 $result = $db->sql_query_limit($sql, 1); 137 $attachment = $db->sql_fetchrow($result); 138 $db->sql_freeresult($result); 139 140 if (!$attachment) 141 { 142 send_status_line(404, 'Not Found'); 143 trigger_error('ERROR_NO_ATTACHMENT'); 144 } 145 146 if ((!$attachment['in_message'] && !$config['allow_attachments']) || ($attachment['in_message'] && !$config['allow_pm_attach'])) 147 { 148 send_status_line(404, 'Not Found'); 149 trigger_error('ATTACHMENT_FUNCTIONALITY_DISABLED'); 150 } 151 152 $row = array(); 153 154 if ($attachment['is_orphan']) 155 { 156 // We allow admins having attachment permissions to see orphan attachments... 157 $own_attachment = ($auth->acl_get('a_attach') || $attachment['poster_id'] == $user->data['user_id']) ? true : false; 158 159 if (!$own_attachment || ($attachment['in_message'] && !$auth->acl_get('u_pm_download')) || (!$attachment['in_message'] && !$auth->acl_get('u_download'))) 160 { 161 send_status_line(404, 'Not Found'); 162 trigger_error('ERROR_NO_ATTACHMENT'); 163 } 164 165 // Obtain all extensions... 166 $extensions = $cache->obtain_attach_extensions(true); 167 } 168 else 169 { 170 if (!$attachment['in_message']) 171 { 172 // 173 $sql = 'SELECT p.forum_id, f.forum_name, f.forum_password, f.parent_id 174 FROM ' . POSTS_TABLE . ' p, ' . FORUMS_TABLE . ' f 175 WHERE p.post_id = ' . $attachment['post_msg_id'] . ' 176 AND p.forum_id = f.forum_id'; 177 $result = $db->sql_query_limit($sql, 1); 178 $row = $db->sql_fetchrow($result); 179 $db->sql_freeresult($result); 180 181 // Global announcement? 182 $f_download = (!$row) ? $auth->acl_getf_global('f_download') : $auth->acl_get('f_download', $row['forum_id']); 183 184 if ($auth->acl_get('u_download') && $f_download) 185 { 186 if ($row && $row['forum_password']) 187 { 188 // Do something else ... ? 189 login_forum_box($row); 190 } 191 } 192 else 193 { 194 send_status_line(403, 'Forbidden'); 195 trigger_error('SORRY_AUTH_VIEW_ATTACH'); 196 } 197 } 198 else 199 { 200 $row['forum_id'] = false; 201 if (!$auth->acl_get('u_pm_download')) 202 { 203 send_status_line(403, 'Forbidden'); 204 trigger_error('SORRY_AUTH_VIEW_ATTACH'); 205 } 206 207 // Check if the attachment is within the users scope... 208 $sql = 'SELECT user_id, author_id 209 FROM ' . PRIVMSGS_TO_TABLE . ' 210 WHERE msg_id = ' . $attachment['post_msg_id']; 211 $result = $db->sql_query($sql); 212 213 $allowed = false; 214 while ($user_row = $db->sql_fetchrow($result)) 215 { 216 if ($user->data['user_id'] == $user_row['user_id'] || $user->data['user_id'] == $user_row['author_id']) 217 { 218 $allowed = true; 219 break; 220 } 221 } 222 $db->sql_freeresult($result); 223 224 if (!$allowed) 225 { 226 send_status_line(403, 'Forbidden'); 227 trigger_error('ERROR_NO_ATTACHMENT'); 228 } 229 } 230 231 // disallowed? 232 $extensions = array(); 233 if (!extension_allowed($row['forum_id'], $attachment['extension'], $extensions)) 234 { 235 send_status_line(404, 'Forbidden'); 236 trigger_error(sprintf($user->lang['EXTENSION_DISABLED_AFTER_POSTING'], $attachment['extension'])); 237 } 238 } 239 240 if (!download_allowed()) 241 { 242 send_status_line(403, 'Forbidden'); 243 trigger_error($user->lang['LINKAGE_FORBIDDEN']); 244 } 245 246 $download_mode = (int) $extensions[$attachment['extension']]['download_mode']; 247 248 // Fetching filename here to prevent sniffing of filename 249 $sql = 'SELECT attach_id, is_orphan, in_message, post_msg_id, extension, physical_filename, real_filename, mimetype, filetime 250 FROM ' . ATTACHMENTS_TABLE . " 251 WHERE attach_id = $download_id"; 252 $result = $db->sql_query_limit($sql, 1); 253 $attachment = $db->sql_fetchrow($result); 254 $db->sql_freeresult($result); 255 256 if (!$attachment) 257 { 258 send_status_line(404, 'Not Found'); 259 trigger_error('ERROR_NO_ATTACHMENT'); 260 } 261 262 $attachment['physical_filename'] = utf8_basename($attachment['physical_filename']); 263 $display_cat = $extensions[$attachment['extension']]['display_cat']; 264 265 if (($display_cat == ATTACHMENT_CATEGORY_IMAGE || $display_cat == ATTACHMENT_CATEGORY_THUMB) && !$user->optionget('viewimg')) 266 { 267 $display_cat = ATTACHMENT_CATEGORY_NONE; 268 } 269 270 if ($display_cat == ATTACHMENT_CATEGORY_FLASH && !$user->optionget('viewflash')) 271 { 272 $display_cat = ATTACHMENT_CATEGORY_NONE; 273 } 274 275 if ($thumbnail) 276 { 277 $attachment['physical_filename'] = 'thumb_' . $attachment['physical_filename']; 278 } 279 else if (($display_cat == ATTACHMENT_CATEGORY_NONE/* || $display_cat == ATTACHMENT_CATEGORY_IMAGE*/) && !$attachment['is_orphan']) 280 { 281 // Update download count 282 $sql = 'UPDATE ' . ATTACHMENTS_TABLE . ' 283 SET download_count = download_count + 1 284 WHERE attach_id = ' . $attachment['attach_id']; 285 $db->sql_query($sql); 286 } 287 288 if ($display_cat == ATTACHMENT_CATEGORY_IMAGE && $mode === 'view' && (strpos($attachment['mimetype'], 'image') === 0) && (strpos(strtolower($user->browser), 'msie') !== false) && !phpbb_is_greater_ie_version($user->browser, 7)) 289 { 290 wrap_img_in_html(append_sid($phpbb_root_path . 'download/file.' . $phpEx, 'id=' . $attachment['attach_id']), $attachment['real_filename']); 291 file_gc(); 292 } 293 else 294 { 295 // Determine the 'presenting'-method 296 if ($download_mode == PHYSICAL_LINK) 297 { 298 // This presenting method should no longer be used 299 if (!@is_dir($phpbb_root_path . $config['upload_path'])) 300 { 301 send_status_line(500, 'Internal Server Error'); 302 trigger_error($user->lang['PHYSICAL_DOWNLOAD_NOT_POSSIBLE']); 303 } 304 305 redirect($phpbb_root_path . $config['upload_path'] . '/' . $attachment['physical_filename']); 306 file_gc(); 307 } 308 else 309 { 310 send_file_to_browser($attachment, $config['upload_path'], $display_cat); 311 file_gc(); 312 } 313 } 314 315 316 /** 317 * A simplified function to deliver avatars 318 * The argument needs to be checked before calling this function. 319 */ 320 function send_avatar_to_browser($file, $browser) 321 { 322 global $config, $phpbb_root_path; 323 324 $prefix = $config['avatar_salt'] . '_'; 325 $image_dir = $config['avatar_path']; 326 327 // Adjust image_dir path (no trailing slash) 328 if (substr($image_dir, -1, 1) == '/' || substr($image_dir, -1, 1) == '\\') 329 { 330 $image_dir = substr($image_dir, 0, -1) . '/'; 331 } 332 $image_dir = str_replace(array('../', '..\\', './', '.\\'), '', $image_dir); 333 334 if ($image_dir && ($image_dir[0] == '/' || $image_dir[0] == '\\')) 335 { 336 $image_dir = ''; 337 } 338 $file_path = $phpbb_root_path . $image_dir . '/' . $prefix . $file; 339 340 if ((@file_exists($file_path) && @is_readable($file_path)) && !headers_sent()) 341 { 342 header('Pragma: public'); 343 344 $image_data = @getimagesize($file_path); 345 header('Content-Type: ' . image_type_to_mime_type($image_data[2])); 346 347 if ((strpos(strtolower($browser), 'msie') !== false) && !phpbb_is_greater_ie_version($browser, 7)) 348 { 349 header('Content-Disposition: attachment; ' . header_filename($file)); 350 351 if (strpos(strtolower($browser), 'msie 6.0') !== false) 352 { 353 header('Expires: -1'); 354 } 355 else 356 { 357 header('Expires: ' . gmdate('D, d M Y H:i:s \G\M\T', time() + 31536000)); 358 } 359 } 360 else 361 { 362 header('Content-Disposition: inline; ' . header_filename($file)); 363 header('Expires: ' . gmdate('D, d M Y H:i:s \G\M\T', time() + 31536000)); 364 } 365 366 $size = @filesize($file_path); 367 if ($size) 368 { 369 header("Content-Length: $size"); 370 } 371 372 if (@readfile($file_path) == false) 373 { 374 $fp = @fopen($file_path, 'rb'); 375 376 if ($fp !== false) 377 { 378 while (!feof($fp)) 379 { 380 echo fread($fp, 8192); 381 } 382 fclose($fp); 383 } 384 } 385 386 flush(); 387 } 388 else 389 { 390 send_status_line(404, 'Not Found'); 391 } 392 } 393 394 /** 395 * Wraps an url into a simple html page. Used to display attachments in IE. 396 * this is a workaround for now; might be moved to template system later 397 * direct any complaints to 1 Microsoft Way, Redmond 398 */ 399 function wrap_img_in_html($src, $title) 400 { 401 echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-Strict.dtd">'; 402 echo '<html>'; 403 echo '<head>'; 404 echo '<meta http-equiv="content-type" content="text/html; charset=UTF-8" />'; 405 echo '<title>' . $title . '</title>'; 406 echo '</head>'; 407 echo '<body>'; 408 echo '<div>'; 409 echo '<img src="' . $src . '" alt="' . $title . '" />'; 410 echo '</div>'; 411 echo '</body>'; 412 echo '</html>'; 413 } 414 415 /** 416 * Send file to browser 417 */ 418 function send_file_to_browser($attachment, $upload_dir, $category) 419 { 420 global $user, $db, $config, $phpbb_root_path; 421 422 $filename = $phpbb_root_path . $upload_dir . '/' . $attachment['physical_filename']; 423 424 if (!@file_exists($filename)) 425 { 426 send_status_line(404, 'Not Found'); 427 trigger_error('ERROR_NO_ATTACHMENT'); 428 } 429 430 // Correct the mime type - we force application/octetstream for all files, except images 431 // Please do not change this, it is a security precaution 432 if ($category != ATTACHMENT_CATEGORY_IMAGE || strpos($attachment['mimetype'], 'image') !== 0) 433 { 434 $attachment['mimetype'] = (strpos(strtolower($user->browser), 'msie') !== false || strpos(strtolower($user->browser), 'opera') !== false) ? 'application/octetstream' : 'application/octet-stream'; 435 } 436 437 if (@ob_get_length()) 438 { 439 @ob_end_clean(); 440 } 441 442 // Now send the File Contents to the Browser 443 $size = @filesize($filename); 444 445 // To correctly display further errors we need to make sure we are using the correct headers for both (unsetting content-length may not work) 446 447 // Check if headers already sent or not able to get the file contents. 448 if (headers_sent() || !@file_exists($filename) || !@is_readable($filename)) 449 { 450 // PHP track_errors setting On? 451 if (!empty($php_errormsg)) 452 { 453 send_status_line(500, 'Internal Server Error'); 454 trigger_error($user->lang['UNABLE_TO_DELIVER_FILE'] . '<br />' . sprintf($user->lang['TRACKED_PHP_ERROR'], $php_errormsg)); 455 } 456 457 send_status_line(500, 'Internal Server Error'); 458 trigger_error('UNABLE_TO_DELIVER_FILE'); 459 } 460 461 // Now the tricky part... let's dance 462 header('Pragma: public'); 463 464 /** 465 * Commented out X-Sendfile support. To not expose the physical filename within the header if xsendfile is absent we need to look into methods of checking it's status. 466 * 467 * Try X-Sendfile since it is much more server friendly - only works if the path is *not* outside of the root path... 468 * lighttpd has core support for it. An apache2 module is available at http://celebnamer.celebworld.ws/stuff/mod_xsendfile/ 469 * 470 * Not really ideal, but should work fine... 471 * <code> 472 * if (strpos($upload_dir, '/') !== 0 && strpos($upload_dir, '../') === false) 473 * { 474 * header('X-Sendfile: ' . $filename); 475 * } 476 * </code> 477 */ 478 479 // Send out the Headers. Do not set Content-Disposition to inline please, it is a security measure for users using the Internet Explorer. 480 header('Content-Type: ' . $attachment['mimetype']); 481 482 if (phpbb_is_greater_ie_version($user->browser, 7)) 483 { 484 header('X-Content-Type-Options: nosniff'); 485 } 486 487 if ($category == ATTACHMENT_CATEGORY_FLASH && request_var('view', 0) === 1) 488 { 489 // We use content-disposition: inline for flash files and view=1 to let it correctly play with flash player 10 - any other disposition will fail to play inline 490 header('Content-Disposition: inline'); 491 } 492 else 493 { 494 if (empty($user->browser) || ((strpos(strtolower($user->browser), 'msie') !== false) && !phpbb_is_greater_ie_version($user->browser, 7))) 495 { 496 header('Content-Disposition: attachment; ' . header_filename(htmlspecialchars_decode($attachment['real_filename']))); 497 if (empty($user->browser) || (strpos(strtolower($user->browser), 'msie 6.0') !== false)) 498 { 499 header('expires: -1'); 500 } 501 } 502 else 503 { 504 header('Content-Disposition: ' . ((strpos($attachment['mimetype'], 'image') === 0) ? 'inline' : 'attachment') . '; ' . header_filename(htmlspecialchars_decode($attachment['real_filename']))); 505 if (phpbb_is_greater_ie_version($user->browser, 7) && (strpos($attachment['mimetype'], 'image') !== 0)) 506 { 507 header('X-Download-Options: noopen'); 508 } 509 } 510 } 511 512 if ($size) 513 { 514 header("Content-Length: $size"); 515 } 516 517 // Close the db connection before sending the file 518 $db->sql_close(); 519 520 if (!set_modified_headers($attachment['filetime'], $user->browser)) 521 { 522 // Try to deliver in chunks 523 @set_time_limit(0); 524 525 $fp = @fopen($filename, 'rb'); 526 527 if ($fp !== false) 528 { 529 while (!feof($fp)) 530 { 531 echo fread($fp, 8192); 532 } 533 fclose($fp); 534 } 535 else 536 { 537 @readfile($filename); 538 } 539 540 flush(); 541 } 542 file_gc(); 543 } 544 545 /** 546 * Get a browser friendly UTF-8 encoded filename 547 */ 548 function header_filename($file) 549 { 550 $user_agent = (!empty($_SERVER['HTTP_USER_AGENT'])) ? htmlspecialchars((string) $_SERVER['HTTP_USER_AGENT']) : ''; 551 552 // There be dragons here. 553 // Not many follows the RFC... 554 if (strpos($user_agent, 'MSIE') !== false || strpos($user_agent, 'Safari') !== false || strpos($user_agent, 'Konqueror') !== false) 555 { 556 return "filename=" . rawurlencode($file); 557 } 558 559 // follow the RFC for extended filename for the rest 560 return "filename*=UTF-8''" . rawurlencode($file); 561 } 562 563 /** 564 * Check if downloading item is allowed 565 */ 566 function download_allowed() 567 { 568 global $config, $user, $db; 569 570 if (!$config['secure_downloads']) 571 { 572 return true; 573 } 574 575 $url = (!empty($_SERVER['HTTP_REFERER'])) ? trim($_SERVER['HTTP_REFERER']) : trim(getenv('HTTP_REFERER')); 576 577 if (!$url) 578 { 579 return ($config['secure_allow_empty_referer']) ? true : false; 580 } 581 582 // Split URL into domain and script part 583 $url = @parse_url($url); 584 585 if ($url === false) 586 { 587 return ($config['secure_allow_empty_referer']) ? true : false; 588 } 589 590 $hostname = $url['host']; 591 unset($url); 592 593 $allowed = ($config['secure_allow_deny']) ? false : true; 594 $iplist = array(); 595 596 if (($ip_ary = @gethostbynamel($hostname)) !== false) 597 { 598 foreach ($ip_ary as $ip) 599 { 600 if ($ip) 601 { 602 $iplist[] = $ip; 603 } 604 } 605 } 606 607 // Check for own server... 608 $server_name = $user->host; 609 610 // Forcing server vars is the only way to specify/override the protocol 611 if ($config['force_server_vars'] || !$server_name) 612 { 613 $server_name = $config['server_name']; 614 } 615 616 if (preg_match('#^.*?' . preg_quote($server_name, '#') . '.*?$#i', $hostname)) 617 { 618 $allowed = true; 619 } 620 621 // Get IP's and Hostnames 622 if (!$allowed) 623 { 624 $sql = 'SELECT site_ip, site_hostname, ip_exclude 625 FROM ' . SITELIST_TABLE; 626 $result = $db->sql_query($sql); 627 628 while ($row = $db->sql_fetchrow($result)) 629 { 630 $site_ip = trim($row['site_ip']); 631 $site_hostname = trim($row['site_hostname']); 632 633 if ($site_ip) 634 { 635 foreach ($iplist as $ip) 636 { 637 if (preg_match('#^' . str_replace('\*', '.*?', preg_quote($site_ip, '#')) . '$#i', $ip)) 638 { 639 if ($row['ip_exclude']) 640 { 641 $allowed = ($config['secure_allow_deny']) ? false : true; 642 break 2; 643 } 644 else 645 { 646 $allowed = ($config['secure_allow_deny']) ? true : false; 647 } 648 } 649 } 650 } 651 652 if ($site_hostname) 653 { 654 if (preg_match('#^' . str_replace('\*', '.*?', preg_quote($site_hostname, '#')) . '$#i', $hostname)) 655 { 656 if ($row['ip_exclude']) 657 { 658 $allowed = ($config['secure_allow_deny']) ? false : true; 659 break; 660 } 661 else 662 { 663 $allowed = ($config['secure_allow_deny']) ? true : false; 664 } 665 } 666 } 667 } 668 $db->sql_freeresult($result); 669 } 670 671 return $allowed; 672 } 673 674 /** 675 * Check if the browser has the file already and set the appropriate headers- 676 * @returns false if a resend is in order. 677 */ 678 function set_modified_headers($stamp, $browser) 679 { 680 // let's see if we have to send the file at all 681 $last_load = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? strtotime(trim($_SERVER['HTTP_IF_MODIFIED_SINCE'])) : false; 682 683 if (strpos(strtolower($browser), 'msie 6.0') === false && !phpbb_is_greater_ie_version($browser, 7)) 684 { 685 if ($last_load !== false && $last_load >= $stamp) 686 { 687 send_status_line(304, 'Not Modified'); 688 // seems that we need those too ... browsers 689 header('Pragma: public'); 690 header('Expires: ' . gmdate('D, d M Y H:i:s \G\M\T', time() + 31536000)); 691 return true; 692 } 693 else 694 { 695 header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $stamp) . ' GMT'); 696 } 697 } 698 return false; 699 } 700 701 function file_gc() 702 { 703 global $cache, $db; 704 if (!empty($cache)) 705 { 706 $cache->unload(); 707 } 708 $db->sql_close(); 709 exit; 710 } 711 712 /** 713 * Check if the browser is internet explorer version 7+ 714 * 715 * @param string $user_agent User agent HTTP header 716 * @param int $version IE version to check against 717 * 718 * @return bool true if internet explorer version is greater than $version 719 */ 720 function phpbb_is_greater_ie_version($user_agent, $version) 721 { 722 if (preg_match('/msie (\d+)/', strtolower($user_agent), $matches)) 723 { 724 $ie_version = (int) $matches[1]; 725 return ($ie_version > $version); 726 } 727 else 728 { 729 return false; 730 } 731 } 732 733 ?>
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| Generated: Wed Oct 2 15:03:47 2013 | Cross-referenced by PHPXref 0.7.1 |