Error

' . '' . '

Error

' . $message . '

' . '

This alternative error page is being displayed because the other couldn\'t be found or hasn\'t loaded yet.

'); } function fatal_error_handler() { if($error = error_get_last()) { if($error['type'] == E_ERROR) { if(function_exists('error')) { error('Caught fatal error: ' . $error['message'] . ' in ' . $error['file'] . ' on line ' . $error['line']); } else { basic_error_function_because_the_other_isnt_loaded_yet('Caught fatal error: ' . $error['message'] . ' in ' . $error['file'] . ' on line ' . $error['line']); } } } } // Memcached function memcached_open() { global $memcached, $config; if($memcached) return; $memcached = new Memcached(); $memcached->addServers($config['memcached']['servers']); } function loadThemeConfig($_theme) { global $config; if(!file_exists($config['dir']['homepage'] . '/' . $_theme . '/info.php')) return false; // Load theme information into $theme include $config['dir']['homepage'] . '/' . $_theme . '/info.php'; return $theme; } function rebuildTheme($action) { global $config, $_theme; $query = query("SELECT `value` AS `theme` FROM `theme_settings` WHERE `name` = 'theme'") or error(db_error()); if($theme = $query->fetch()) { // A theme is installed $_theme = $theme['theme']; $theme = loadThemeConfig($_theme); if(file_exists($config['dir']['homepage'] . '/' . $_theme . '/theme.php')) { include $config['dir']['homepage'] . '/' . $_theme . '/theme.php'; $theme['build_function']($action, themeSettings()); } } } function themeSettings() { $query = query("SELECT * FROM `theme_settings`") or error(db_error()); $settings = Array(); while($s = $query->fetch()) { $settings[$s['name']] = $s['value']; } return $settings; } function sprintf3($str, $vars, $delim = '%') { $replaces = array(); foreach($vars as $k => $v) { $replaces[$delim . $k . $delim] = $v; } return str_replace(array_keys($replaces), array_values($replaces), $str); } function setupBoard($array) { global $board, $config; $board = Array( 'id' => $array['id'], 'uri' => $array['uri'], 'name' => $array['title'], 'title' => $array['subtitle']); $board['dir'] = sprintf($config['board_path'], $board['uri']); $board['url'] = sprintf($config['board_abbreviation'], $board['uri']); loadConfig(); if(!file_exists($board['dir'])) mkdir($board['dir'], 0777); if(!file_exists($board['dir'] . $config['dir']['img'])) @mkdir($board['dir'] . $config['dir']['img'], 0777) or error("Couldn't create " . $config['dir']['img'] . ". Check permissions.", true); if(!file_exists($board['dir'] . $config['dir']['thumb'])) @mkdir($board['dir'] . $config['dir']['thumb'], 0777) or error("Couldn't create " . $config['dir']['thumb'] . ". Check permissions.", true); if(!file_exists($board['dir'] . $config['dir']['res'])) @mkdir($board['dir'] . $config['dir']['res'], 0777) or error("Couldn't create " . $config['dir']['res'] . ". Check permissions.", true); } function openBoard($uri) { $query = prepare("SELECT * FROM `boards` WHERE `uri` = :uri LIMIT 1"); $query->bindValue(':uri', $uri); $query->execute() or error(db_error($query)); if($board = $query->fetch()) { setupBoard($board); return true; } else return false; } function file_write($path, $data) { global $config; if(preg_match('/^scp:\/\/(.+)$/', $path, $m)) { // Experimental: secure copy... $file = tempnam($config['tmp'], 'tinyboard-scp'); // Write to temp file file_write($file, $data); // Call `scp` (yes, this is horrible) $command = 'scp ' . escapeshellarg($file) . ' ' . escapeshellarg($m[1]); system($command); // Delete temporary file unlink($file); exit; } if(!$fp = fopen($path, 'c')) error('Unable to open file for writing: ' . $path); // File locking if(!flock($fp, LOCK_EX)) { error('Unable to lock file: ' . $path); } // Truncate file ftruncate($fp, 0); // Write data fwrite($fp, $data); flock($fp, LOCK_UN); fclose($fp); } function listBoards() { $query = query("SELECT * FROM `boards` ORDER BY `uri`") or error(db_error()); $boards = $query->fetchAll(); return $boards; } function checkFlood($post) { global $board, $config; $query = prepare(sprintf("SELECT * FROM `posts_%s` WHERE (`ip` = :ip AND `time` >= :floodtime) OR (`ip` = :ip AND `body` = :body AND `time` >= :floodsameiptime) OR (`body` = :body AND `time` >= :floodsametime) LIMIT 1", $board['uri'])); $query->bindValue(':ip', $_SERVER['REMOTE_ADDR']); $query->bindValue(':body', $post['body'], PDO::PARAM_INT); $query->bindValue(':floodtime', time()-$config['flood_time'], PDO::PARAM_INT); $query->bindValue(':floodsameiptime', time()-$config['flood_time_ip'], PDO::PARAM_INT); $query->bindValue(':floodsametime', time()-$config['flood_time_same'], PDO::PARAM_INT); $query->execute() or error(db_error($query)); return (bool)$query->fetch(); } function until($timestamp) { $difference = $timestamp - time(); if($difference < 60) { return $difference . ' second' . ($difference != 1 ? 's' : ''); } elseif($difference < 60*60) { return ($num = round($difference/(60))) . ' minute' . ($num != 1 ? 's' : ''); } elseif($difference < 60*60*24) { return ($num = round($difference/(60*60))) . ' hour' . ($num != 1 ? 's' : ''); } elseif($difference < 60*60*24*7) { return ($num = round($difference/(60*60*24))) . ' day' . ($num != 1 ? 's' : ''); } elseif($difference < 60*60*24*365) { return ($num = round($difference/(60*60*24*7))) . ' week' . ($num != 1 ? 's' : ''); } else { return ($num = round($difference/(60*60*24*365))) . ' year' . ($num != 1 ? 's' : ''); } } function ago($timestamp) { $difference = time() - $timestamp; if($difference < 60) { return $difference . ' second' . ($difference != 1 ? 's' : ''); } elseif($difference < 60*60) { return ($num = round($difference/(60))) . ' minute' . ($num != 1 ? 's' : ''); } elseif($difference < 60*60*24) { return ($num = round($difference/(60*60))) . ' hour' . ($num != 1 ? 's' : ''); } elseif($difference < 60*60*24*7) { return ($num = round($difference/(60*60*24))) . ' day' . ($num != 1 ? 's' : ''); } elseif($difference < 60*60*24*365) { return ($num = round($difference/(60*60*24*7))) . ' week' . ($num != 1 ? 's' : ''); } else { return ($num = round($difference/(60*60*24*365))) . ' year' . ($num != 1 ? 's' : ''); } } function formatDate($timestamp) { return date('jS F, Y', $timestamp); } function displayBan($ban) { global $config; $body = '

You are banned! ;_;

You have been banned ' . ($ban['reason'] ? 'for the following reason:' : 'for an unspecified reason.') . '

' . ($ban['reason'] ? '

' . $ban['reason'] . '

' : '') . '

Your ban was filed on ' . formatDate($ban['set']) . ', and ' . ($ban['expires'] ? 'expires ' . until($ban['expires']) . ' from now, which is on ' . formatDate($ban['expires']) . ' ' : 'will not expire.' ) . '

Your IP address is ' . $_SERVER['REMOTE_ADDR'] . '.

'; // Show banned page and exit die(Element('page.html', Array( 'config' => $config, 'title' => 'Banned', 'subtitle' => 'You are banned!', 'body' => $body ) )); } function checkBan() { global $config, $memcached; if(!isset($_SERVER['REMOTE_ADDR'])) { // Server misconfiguration return; } if($config['memcached']['enabled']) { // Cached ban? if($ban = $memcached->get("ban_${_SERVER['REMOTE_ADDR']}")) { displayBan($ban); } } $query = prepare("SELECT * FROM `bans` WHERE `ip` = :ip ORDER BY `expires` IS NULL DESC, `expires` DESC, `expires` DESC LIMIT 1"); $query->bindValue(':ip', $_SERVER['REMOTE_ADDR']); $query->execute() or error(db_error($query)); if($query->rowCount() < 1 && $config['ban_range']) { $query = prepare("SELECT * FROM `bans` WHERE :ip REGEXP CONCAT('^', REPLACE(REPLACE(`ip`, '.', '\\.'), '*', '[0-9]*'), '$') ORDER BY `expires` IS NULL DESC, `expires` DESC LIMIT 1"); $query->bindValue(':ip', $_SERVER['REMOTE_ADDR']); $query->execute() or error(db_error($query)); } if($ban = $query->fetch()) { if($ban['expires'] && $ban['expires'] < time()) { // Ban expired $query = prepare("DELETE FROM `bans` WHERE `ip` = :ip AND `expires` = :expires LIMIT 1"); $query->bindValue(':ip', $_SERVER['REMOTE_ADDR']); $query->bindValue(':expires', $ban['expires'], PDO::PARAM_INT); $query->execute() or error(db_error($query)); if($config['ban_range']) { $query = prepare("DELETE FROM `bans` WHERE :ip REGEXP CONCAT('^', REPLACE(REPLACE(`ip`, '.', '\\.'), '*', '[0-9a-f]*'), '$') AND `expires` = :expires LIMIT 1"); $query->bindValue(':ip', $_SERVER['REMOTE_ADDR']); $query->bindValue(':expires', $ban['expires'], PDO::PARAM_INT); $query->execute() or error(db_error($query)); } return; } if($config['memcached']['enabled']) $memcached->set("ban_${_SERVER['REMOTE_ADDR']}", $ban, $ban['expires']); displayBan($ban); } } function threadLocked($id) { global $board; $query = prepare(sprintf("SELECT `locked` FROM `posts_%s` WHERE `id` = :id AND `thread` IS NULL LIMIT 1", $board['uri'])); $query->bindValue(':id', $id, PDO::PARAM_INT); $query->execute() or error(db_error()); if(!$post = $query->fetch()) { // Non-existant, so it can't be locked... return false; } return (bool) $post['locked']; } function threadExists($id) { global $board; $query = prepare(sprintf("SELECT 1 FROM `posts_%s` WHERE `id` = :id AND `thread` IS NULL LIMIT 1", $board['uri'])); $query->bindValue(':id', $id, PDO::PARAM_INT); $query->execute() or error(db_error()); if($query->rowCount()) { return true; } else return false; } function post($post, $OP) { global $pdo, $board; $query = prepare(sprintf("INSERT INTO `posts_%s` VALUES ( NULL, :thread, :subject, :email, :name, :trip, :capcode, :body, :time, :time, :thumb, :thumbwidth, :thumbheight, :file, :width, :height, :filesize, :filename, :filehash, :password, :ip, :sticky, :locked, :embed)", $board['uri'])); // Basic stuff $query->bindValue(':subject', $post['subject']); $query->bindValue(':email', $post['email']); $query->bindValue(':name', $post['name']); $query->bindValue(':trip', $post['trip']); $query->bindValue(':body', $post['body']); $query->bindValue(':time', time(), PDO::PARAM_INT); $query->bindValue(':password', $post['password']); $query->bindValue(':ip', $_SERVER['REMOTE_ADDR']); if($post['mod'] && $post['sticky']) { $query->bindValue(':sticky', 1, PDO::PARAM_INT); } else { $query->bindValue(':sticky', 0, PDO::PARAM_INT); } if($post['mod'] && $post['locked']) { $query->bindValue(':locked', 1, PDO::PARAM_INT); } else { $query->bindValue(':locked', 0, PDO::PARAM_INT); } if($post['mod'] && $post['capcode']) { $query->bindValue(':capcode', $post['capcode'], PDO::PARAM_INT); } else { $query->bindValue(':capcode', NULL, PDO::PARAM_NULL); } if(!empty($post['embed'])) { $query->bindValue(':embed', $post['embed']); } else { $query->bindValue(':embed', NULL, PDO::PARAM_NULL); } if($OP) { // No parent thread, image $query->bindValue(':thread', null, PDO::PARAM_NULL); } else { $query->bindValue(':thread', $post['thread'], PDO::PARAM_INT); } if($post['has_file']) { $query->bindValue(':thumb', $post['thumb']); $query->bindValue(':thumbwidth', $post['thumbwidth'], PDO::PARAM_INT); $query->bindValue(':thumbheight', $post['thumbheight'], PDO::PARAM_INT); $query->bindValue(':file', $post['file']); $query->bindValue(':width', $post['width'], PDO::PARAM_INT); $query->bindValue(':height', $post['height'], PDO::PARAM_INT); $query->bindValue(':filesize', $post['filesize'], PDO::PARAM_INT); $query->bindValue(':filename', $post['filename']); $query->bindValue(':filehash', $post['file']); } else { $query->bindValue(':thumb', null, PDO::PARAM_NULL); $query->bindValue(':thumbwidth', null, PDO::PARAM_NULL); $query->bindValue(':thumbheight', null, PDO::PARAM_NULL); $query->bindValue(':file', null, PDO::PARAM_NULL); $query->bindValue(':width', null, PDO::PARAM_NULL); $query->bindValue(':height', null, PDO::PARAM_NULL); $query->bindValue(':filesize', null, PDO::PARAM_NULL); $query->bindValue(':filename', null, PDO::PARAM_NULL); $query->bindValue(':filehash', null, PDO::PARAM_NULL); } $query->execute() or error(db_error($query)); return $pdo->lastInsertId(); } function bumpThread($id) { global $board; $query = prepare(sprintf("UPDATE `posts_%s` SET `bump` = :time WHERE `id` = :id AND `thread` IS NULL", $board['uri'])); $query->bindValue(':time', time(), PDO::PARAM_INT); $query->bindValue(':id', $id, PDO::PARAM_INT); $query->execute() or error(db_error($query)); } // Remove file from post function deleteFile($id, $remove_entirely_if_already=true) { global $board, $config; $query = prepare(sprintf("SELECT `thread`,`thumb`,`file` FROM `posts_%s` WHERE `id` = :id AND `thread` IS NOT NULL LIMIT 1", $board['uri'])); $query->bindValue(':id', $id, PDO::PARAM_INT); $query->execute() or error(db_error($query)); if($query->rowCount() < 1) { error($config['error']['invalidpost']); } $post = $query->fetch(); $query = prepare(sprintf("UPDATE `posts_%s` SET `thumb` = NULL, `thumbwidth` = NULL, `thumbheight` = NULL, `filewidth` = NULL, `fileheight` = NULL, `filesize` = NULL, `filename` = NULL, `filehash` = NULL, `file` = :file WHERE `id` = :id OR `thread` = :id", $board['uri'])); if($post['file'] == 'deleted' && $remove_entirely_if_already) { // Already deleted; remove file fully $query->bindValue(':file', null, PDO::PARAM_NULL); } else { // Delete thumbnail @unlink($board['dir'] . $config['dir']['thumb'] . $post['thumb']); // Delete file @unlink($board['dir'] . $config['dir']['img'] . $post['file']); // Set file to 'deleted' $query->bindValue(':file', 'deleted', PDO::PARAM_INT); } // Update database $query->bindValue(':id', $id, PDO::PARAM_INT); $query->execute() or error(db_error($query)); buildThread($post['thread']); } // Delete a post (reply or thread) function deletePost($id, $error_if_doesnt_exist=true) { global $board, $config; // Select post and replies (if thread) in one query $query = prepare(sprintf("SELECT `id`,`thread`,`thumb`,`file` FROM `posts_%s` WHERE `id` = :id OR `thread` = :id", $board['uri'])); $query->bindValue(':id', $id, PDO::PARAM_INT); $query->execute() or error(db_error($query)); if($query->rowCount() < 1) { if($error_if_doesnt_exist) error($config['error']['invalidpost']); else return false; } // Delete posts and maybe replies while($post = $query->fetch()) { if(!$post['thread']) { // Delete thread HTML page @unlink($board['dir'] . $config['dir']['res'] . sprintf($config['file_page'], $post['id'])); } elseif($query->rowCount() == 1) { // Rebuild thread $rebuild = $post['thread']; } if($post['thumb']) { // Delete thumbnail @unlink($board['dir'] . $config['dir']['thumb'] . $post['thumb']); } if($post['file']) { // Delete file @unlink($board['dir'] . $config['dir']['img'] . $post['file']); } } $query = prepare(sprintf("DELETE FROM `posts_%s` WHERE `id` = :id OR `thread` = :id", $board['uri'])); $query->bindValue(':id', $id, PDO::PARAM_INT); $query->execute() or error(db_error($query)); if(isset($rebuild)) { buildThread($rebuild); } return true; } function clean() { global $board, $config; $offset = round($config['max_pages']*$config['threads_per_page']); // I too wish there was an easier way of doing this... $query = prepare(sprintf("SELECT `id` FROM `posts_%s` WHERE `thread` IS NULL ORDER BY `sticky` DESC, `bump` DESC LIMIT :offset, 9001", $board['uri'])); $query->bindValue(':offset', $offset, PDO::PARAM_INT); $query->execute() or error(db_error($query)); while($post = $query->fetch()) { deletePost($post['id']); } } function index($page, $mod=false) { global $board, $config, $memcached; $body = ''; $offset = round($page*$config['threads_per_page']-$config['threads_per_page']); $query = prepare(sprintf("SELECT * FROM `posts_%s` WHERE `thread` IS NULL ORDER BY `sticky` DESC, `bump` DESC LIMIT ?,?", $board['uri'])); $query->bindValue(1, $offset, PDO::PARAM_INT); $query->bindValue(2, $config['threads_per_page'], PDO::PARAM_INT); $query->execute() or error(db_error($query)); if($query->rowcount() < 1 && $page > 1) return false; while($th = $query->fetch()) { $thread = new Thread($th['id'], $th['subject'], $th['email'], $th['name'], $th['trip'], $th['capcode'], $th['body'], $th['time'], $th['thumb'], $th['thumbwidth'], $th['thumbheight'], $th['file'], $th['filewidth'], $th['fileheight'], $th['filesize'], $th['filename'], $th['ip'], $th['sticky'], $th['locked'], $th['embed'], $mod ? '?/' : $config['root'], $mod); if($config['memcached']['enabled'] && !$mod) { if($built = $memcached->get("theadindex_{$board['uri']}_{$th['id']}")) { $body .= $built; continue; } } $posts = prepare(sprintf("SELECT * FROM `posts_%s` WHERE `thread` = ? ORDER BY `id` DESC LIMIT ?", $board['uri'])); $posts->bindValue(1, $th['id']); $posts->bindValue(2, ($th['sticky'] ? $config['threads_preview_sticky'] : $config['threads_preview']), PDO::PARAM_INT); $posts->execute() or error(db_error($posts)); $num_images = 0; while($po = $posts->fetch()) { if($po['file']) $num_images++; $thread->add(new Post($po['id'], $th['id'], $po['subject'], $po['email'], $po['name'], $po['trip'], $po['capcode'], $po['body'], $po['time'], $po['thumb'], $po['thumbwidth'], $po['thumbheight'], $po['file'], $po['filewidth'], $po['fileheight'], $po['filesize'], $po['filename'], $po['ip'], $po['embed'], $mod ? '?/' : $config['root'], $mod)); } if($posts->rowCount() == ($th['sticky'] ? $config['threads_preview_sticky'] : $config['threads_preview'])) { $count = prepare(sprintf("SELECT COUNT(`id`) as `num` FROM `posts_%s` WHERE `thread` = :thread UNION ALL SELECT COUNT(`id`) FROM `posts_%s` WHERE `file` IS NOT NULL AND `thread` = :thread", $board['uri'], $board['uri'])); $count->bindValue(':thread', $th['id'], PDO::PARAM_INT); $count->execute() or error(db_error($count)); $c = $count->fetch(); $thread->omitted = $c['num'] - ($th['sticky'] ? $config['threads_preview_sticky'] : $config['threads_preview']); $c = $count->fetch(); $thread->omitted_images = $c['num'] - $num_images; } $thread->posts = array_reverse($thread->posts); $built = '

' . $thread->build(true) . '

'; if($config['memcached']['enabled'] && !$mod) { $memcached->set("theadindex_{$board['uri']}_{$th['id']}", $built, time() + $config['memcached']['timeout']); } $body .= $built; } return Array( 'board'=>$board, 'body'=>$body, 'post_url' => $config['post_url'], 'config' => $config, 'boardlist' => createBoardlist($mod) ); } function getPageButtons($pages, $mod=false) { global $config, $board; $btn = Array(); $root = ($mod ? '?/' : $config['root']) . $board['dir']; foreach($pages as $num => $page) { if(isset($page['selected'])) { // Previous button if($num == 0) { // There is no previous page. $btn['prev'] = 'Previous'; } else { $loc = ($mod ? '?/' . $board['uri'] . '/' : '') . ($num == 1 ? $config['file_index'] : sprintf($config['file_page'], $num) ); $btn['prev'] = ''; } if($num == count($pages) - 1) { // There is no next page. $btn['next'] = 'Next'; } else { $loc = ($mod ? '?/' . $board['uri'] . '/' : '') . sprintf($config['file_page'], $num + 2); $btn['next'] = ''; } } } return $btn; } function getPages($mod=false) { global $board, $config; // Count threads $query = query(sprintf("SELECT COUNT(`id`) as `num` FROM `posts_%s` WHERE `thread` IS NULL", $board['uri'])) or error(db_error()); $count = current($query->fetch()); $count = floor(($config['threads_per_page'] + $count - 1) / $config['threads_per_page']); if($count < 1) $count = 1; $pages = Array(); for($x=0;$x<$count && $x<$config['max_pages'];$x++) { $pages[] = Array( 'num' => $x+1, 'link' => $x==0 ? ($mod ? '?/' : $config['root']) . $board['dir'] . $config['file_index'] : ($mod ? '?/' : $config['root']) . $board['dir'] . sprintf($config['file_page'], $x+1) ); } return $pages; } function makerobot($body) { global $config; $body = strtolower($body); // Leave only letters $body = preg_replace('/[^a-z]/i', '', $body); // Remove repeating characters if($config['robot_strip_repeating']) $body = preg_replace('/(.)\\1+/', '$1', $body); return sha1($body); } function checkRobot($body) { $body = makerobot($body); $query = prepare("SELECT 1 FROM `robot` WHERE `hash` = :hash LIMIT 1"); $query->bindValue(':hash', $body); $query->execute() or error(db_error($query)); if($query->fetch()) { return true; } else { // Insert new hash $query = prepare("INSERT INTO `robot` VALUES (:hash)"); $query->bindValue(':hash', $body); $query->execute() or error(db_error($query)); return false; } } function numPosts($id) { global $board; $query = prepare(sprintf("SELECT COUNT(*) as `count` FROM `posts_%s` WHERE `thread` = :thread", $board['uri'])); $query->bindValue(':thread', $id, PDO::PARAM_INT); $query->execute() or error(db_error($query)); $result = $query->fetch(); return $result['count']; } function muteTime() { global $config; // Find number of mutes in the past X hours $query = prepare("SELECT COUNT(*) as `count` FROM `mutes` WHERE `time` >= :time AND `ip` = :ip"); $query->bindValue(':time', time()-($config['robot_mute_hour']*3600), PDO::PARAM_INT); $query->bindValue(':ip', $_SERVER['REMOTE_ADDR']); $query->execute() or error(db_error($query)); $result = $query->fetch(); if($result['count'] == 0) return 0; return pow($config['robot_mute_multiplier'], $result['count']); } function mute() { // Insert mute $query = prepare("INSERT INTO `mutes` VALUES (:ip, :time)"); $query->bindValue(':time', time(), PDO::PARAM_INT); $query->bindValue(':ip', $_SERVER['REMOTE_ADDR']); $query->execute() or error(db_error($query)); return muteTime(); } function checkMute() { global $config, $memcached; if($config['memcached']['enabled']) { // Cached mute? if(($mute = $memcached->get("mute_${_SERVER['REMOTE_ADDR']}")) && ($mutetime = $memcached->get("mutetime_${_SERVER['REMOTE_ADDR']}"))) { error(sprintf($config['error']['youaremuted'], $mute['time'] + $mutetime - time())); } } $mutetime = muteTime(); if($mutetime > 0) { // Find last mute time $query = prepare("SELECT `time` FROM `mutes` WHERE `ip` = :ip ORDER BY `time` DESC LIMIT 1"); $query->bindValue(':ip', $_SERVER['REMOTE_ADDR']); $query->execute() or error(db_error($query)); if(!$mute = $query->fetch()) { // What!? He's muted but he's not muted... return; } if($mute['time'] + $mutetime > time()) { if($config['memcached']['enabled']) { $memcached->set("mute_${_SERVER['REMOTE_ADDR']}", $mute, $mute['time'] + $mutetime); $memcached->set("mutetime_${_SERVER['REMOTE_ADDR']}", $mutetime, $mute['time'] + $mutetime); } // Not expired yet error(sprintf($config['error']['youaremuted'], $mute['time'] + $mutetime - time())); } else { // Already expired return; } } } function createHiddenInputs() { global $config; $inputs = Array(); shuffle($config['spam']['hidden_input_names']); $hidden_input_names_x = 0; $input_count = rand($config['spam']['hidden_inputs_min'], $config['spam']['hidden_inputs_max']); for($x=0;$x<$input_count;$x++) { if(rand(0, 2) == 0 || $hidden_input_names_x < 0) { // Use an obscure name $name = substr(base64_encode(sha1(rand())), 0, rand(2, 40)); } else { // Use a pre-defined confusing name $name = $config['spam']['hidden_input_names'][$hidden_input_names_x++]; if($hidden_input_names_x >= count($config['spam']['hidden_input_names'])) $hidden_input_names_x = -1; } if(rand(0, 2) == 0) { // Value must be null $inputs[$name] = ''; } elseif(rand(0, 4) == 0) { // Numeric value $inputs[$name] = rand(0, 100); } else { // Obscure value $inputs[$name] = substr(base64_encode(sha1(rand())), 0, rand(2, 40)); } } $content = ''; foreach($inputs as $name => $value) { $display_type = rand(0, 8); switch($display_type) { case 0: $content .= ''; break; case 1: $content .= ''; break; case 2: $content .= ''; break; case 3: $content .= ''; break; case 4: $content .= ''; break; case 5: $content .= ''; break; case 6: if(!empty($value)) $content .= ''; else $content .= ''; break; case 7: if(!empty($value)) $content .= ''; else $content .= ''; break; case 8: $content .= ''; break; } } // Create a hash to validate it after // This is the tricky part. // First, sort the keys in alphabetical order (A-Z) ksort($inputs); $hash = ''; // Iterate through each input foreach($inputs as $name => $value) { $hash .= $name . '=' . $value; } // Add a salt to the hash $hash .= $config['cookies']['salt']; // Use SHA1 for the hash $hash = sha1($hash); // Append it to the HTML $content .= ''; return $content; } function checkSpam() { global $config; if(!isset($_POST['hash'])) return true; $hash = $_POST['hash']; // Reconsturct the $inputs array $inputs = Array(); foreach($_POST as $name => $value) { if(in_array($name, $config['spam']['valid_inputs'])) continue; $inputs[$name] = $value; } // Sort the inputs in alphabetical order (A-Z) ksort($inputs); $_hash = ''; // Iterate through each input foreach($inputs as $name => $value) { $_hash .= $name . '=' . $value; } // Add a salt to the hash $_hash .= $config['cookies']['salt']; // Use SHA1 for the hash $_hash = sha1($_hash); return $hash != $_hash; } function buildIndex() { global $board, $config; $pages = getPages(); $page = 1; while($page <= $config['max_pages'] && $content = index($page)) { $filename = $board['dir'] . ($page==1 ? $config['file_index'] : sprintf($config['file_page'], $page)); if(file_exists($filename)) $md5 = md5_file($filename); $content['pages'] = $pages; $content['pages'][$page-1]['selected'] = true; $content['btn'] = getPageButtons($content['pages']); $content['hidden_inputs'] = createHiddenInputs(); file_write($filename, Element('index.html', $content)); if(isset($md5) && $md5 == md5_file($filename)) { break; } $page++; } if($page < $config['max_pages']) { for(;$page<=$config['max_pages'];$page++) { $filename = $page==1 ? $config['file_index'] : sprintf($config['file_page'], $page); @unlink($filename); } } } function buildJavascript() { global $config; $stylesheets = Array(); foreach($config['stylesheets'] as $name => $uri) { $stylesheets[] = Array( 'name' => addslashes($name), 'uri' => addslashes((!empty($uri) ? $config['uri_stylesheets'] : '') . $uri)); } file_write($config['file_script'], Element('main.js', Array( 'config' => $config, 'stylesheets' => $stylesheets ))); } function checkDNSBL() { global $config; if(isIPv6()) return; // No IPv6 support yet. if(!isset($_SERVER['REMOTE_ADDR'])) return; // Fix your web server configuration // Reverse IP $ip = ReverseIPOctets($_SERVER['REMOTE_ADDR']); foreach($config['dnsbl'] as &$blacklist) { $lookup = $ip . '.' . $blacklist; $host = gethostbyname($lookup); if($host != $lookup) { // On NXDOMAIN (meaning it's not in the blacklist), gethostbyname() returns the host unchanged. if(preg_match('/^127\.0\.0\./', $host) && $host != '127.0.0.10') error(sprintf($config['error']['dnsbl'], $blacklist)); } } } function isIPv6() { return strstr($_SERVER['REMOTE_ADDR'], ':') !== false; } function ReverseIPOctets($ip) { $ipoc = explode('.', $ip); return $ipoc[3] . '.' . $ipoc[2] . '.' . $ipoc[1] . '.' . $ipoc[0]; } function wordfilters(&$body) { global $config; foreach($config['wordfilters'] as $filter) { if(isset($filter[2]) && $filter[2]) { $body = preg_replace($filter[0], $filter[1], $body); } else { $body = str_replace($filter[0], $filter[1], $body); } } } function quote($body, $quote=true) { $body = str_replace('
', "\n", $body); $body = strip_tags($body); $body = preg_replace("/(^|\n)/", '$1>', $body); return $body . "\n"; } function markup(&$body) { global $board, $config; $body = utf8tohtml($body, true); if($config['wiki_markup']) { $body = preg_replace("/(^|\n)==(.+?)==\n?/m", "$2", $body); $body = preg_replace("/'''(.+?)'''/m", "$1", $body); $body = preg_replace("/''(.+?)''/m", "$1", $body); $body = preg_replace("/\*\*(.+?)\*\*/m", "$1", $body); } if($config['markup_urls']) { $body = preg_replace($config['url_regex'], "$0", $body, -1, $num_links); if($num_links > $config['max_links']) error($config['error']['toomanylinks']); } if($config['auto_unicode']) { $body = str_replace('...', '…', $body); $body = str_replace('<--', '←', $body); $body = str_replace('-->', '→', $body); // En and em- dashes are rendered exactly the same in // most monospace fonts (they look the same in code // editors). $body = str_replace('---', '—', $body); // em dash $body = str_replace('--', '–', $body); // en dash } // Cites if(isset($board) && preg_match_all('/(^|\s)>>(\d+?)(\s|$)/', $body, $cites)) { if(count($cites[0]) > $config['max_cites']) { error($config['error']['toomanycites']); } for($index=0;$indexbindValue(':id', $cite); $query->execute() or error(db_error($query)); if($post = $query->fetch()) { $replacement = '' . '>>' . $cite . ''; $body = str_replace($cites[0][$index], $cites[1][$index] . $replacement . $cites[3][$index], $body); } } } // Cross-board linking if(preg_match_all('/(^|\s)>>>\/(\w+?)\/(\d+)?(\s|$)/', $body, $cites)) { if(count($cites[0]) > $config['max_cites']) { error($config['error']['toomanycross']); } for($index=0;$indexbindValue(':id', $cite); $query->execute() or error(db_error($query)); if($post = $query->fetch()) { $replacement = '' . '>>>/' . $_board . '/' . $cite . ''; $body = str_replace($cites[0][$index], $cites[1][$index] . $replacement . $cites[4][$index], $body); } } else { $replacement = '' . '>>>/' . $_board . '/' . ''; $body = str_replace($cites[0][$index], $cites[1][$index] . $replacement . $cites[4][$index], $body); } } // Restore main board settings openBoard($tmp_board); } } $body = str_replace("\r", '', $body); $body = preg_replace("/(^|\n)([\s]+)?(>)([^\n]+)?($|\n)/m", '$1$2$3$4$5', $body); if($config['strip_superfluous_returns']) $body = preg_replace('/\s+$/', '', $body); $body = preg_replace("/\n/", '
', $body); } function html_entity_decode_utf8($string) { static $trans_tbl; // replace numeric entities $string = preg_replace('~&#x([0-9a-f]+);~ei', 'code2utf(hexdec("\\1"))', $string); $string = preg_replace('~&#([0-9]+);~e', 'code2utf(\\1)', $string); // replace literal entities if (!isset($trans_tbl)) { $trans_tbl = array(); foreach (get_html_translation_table(HTML_ENTITIES) as $val=>$key) $trans_tbl[$key] = utf8_encode($val); } return strtr($string, $trans_tbl); } // Returns the utf string corresponding to the unicode value (from php.net, courtesy - romans@void.lv) function code2utf($num) { if ($num < 128) return chr($num); if ($num < 2048) return chr(($num >> 6) + 192) . chr(($num & 63) + 128); if ($num < 65536) return chr(($num >> 12) + 224) . chr((($num >> 6) & 63) + 128) . chr(($num & 63) + 128); if ($num < 2097152) return chr(($num >> 18) + 240) . chr((($num >> 12) & 63) + 128) . chr((($num >> 6) & 63) + 128) . chr(($num & 63) + 128); return ''; } function utf8tohtml($utf8, $encodeTags=true) { $result = ''; for ($i = 0; $i < strlen($utf8); $i++) { $char = $utf8[$i]; $ascii = ord($char); if ($ascii < 128) { // one-byte character $result .= ($encodeTags) ? htmlentities($char) : $char; } else if ($ascii < 192) { // non-utf8 character or not a start byte } else if ($ascii < 224) { // two-byte character $result .= htmlentities(substr($utf8, $i, 2), ENT_QUOTES, 'UTF-8'); $i++; } else if ($ascii < 240) { // three-byte character $ascii1 = ord($utf8[$i+1]); $ascii2 = @ord($utf8[$i+2]); $unicode = (15 & $ascii) * 4096 + (63 & $ascii1) * 64 + (63 & $ascii2); $result .= "&#$unicode;"; $i += 2; } else if ($ascii < 248) { // four-byte character $ascii1 = ord($utf8[$i+1]); $ascii2 = ord($utf8[$i+2]); $ascii3 = ord($utf8[$i+3]); $unicode = (15 & $ascii) * 262144 + (63 & $ascii1) * 4096 + (63 & $ascii2) * 64 + (63 & $ascii3); $result .= "&#$unicode;"; $i += 3; } } return $result; } function buildThread($id, $return=false, $mod=false) { global $board, $config, $memcached; $id = round($id); if($config['memcached']['enabled'] && !$mod) { // Clear cache for index pages $memcached->delete("theadindex_{$board['uri']}_{$id}"); } $query = prepare(sprintf("SELECT * FROM `posts_%s` WHERE (`thread` IS NULL AND `id` = :id) OR `thread` = :id ORDER BY `thread`,`time`", $board['uri'])); $query->bindValue(':id', $id, PDO::PARAM_INT); $query->execute() or error(db_error($query)); while($post = $query->fetch()) { if(!isset($thread)) { $thread = new Thread($post['id'], $post['subject'], $post['email'], $post['name'], $post['trip'], $post['capcode'], $post['body'], $post['time'], $post['thumb'], $post['thumbwidth'], $post['thumbheight'], $post['file'], $post['filewidth'], $post['fileheight'], $post['filesize'], $post['filename'], $post['ip'], $post['sticky'], $post['locked'], $post['embed'], $mod ? '?/' : $config['root'], $mod); } else { $thread->add(new Post($post['id'], $thread->id, $post['subject'], $post['email'], $post['name'], $post['trip'], $post['capcode'], $post['body'], $post['time'], $post['thumb'], $post['thumbwidth'], $post['thumbheight'], $post['file'], $post['filewidth'], $post['fileheight'], $post['filesize'], $post['filename'], $post['ip'], $post['embed'], $mod ? '?/' : $config['root'], $mod)); } } // Check if any posts were found if(!isset($thread)) error($config['error']['nonexistant']); $body = Element('thread.html', Array( 'board'=>$board, 'body'=>$thread->build(), 'config' => $config, 'id' => $id, 'mod' => $mod, 'boardlist' => createBoardlist($mod), 'hidden_inputs' => $content['hidden_inputs'] = createHiddenInputs(), 'return' => ($mod ? '?' . $board['url'] . $config['file_index'] : $config['root'] . $board['uri'] . '/' . $config['file_index']) )); if($return) return $body; else file_write($board['dir'] . $config['dir']['res'] . sprintf($config['file_page'], $id), $body); } function rrmdir($dir) { if (is_dir($dir)) { $objects = scandir($dir); foreach ($objects as $object) { if ($object != "." && $object != "..") { if (filetype($dir."/".$object) == "dir") rrmdir($dir."/".$object); else unlink($dir."/".$object); } } reset($objects); rmdir($dir); } } function poster_id($ip, $thread) { global $config; // Confusing, hard to brute-force, but simple algorithm return substr(sha1(sha1($ip . $config['secure_trip_salt'] . $thread) . $config['secure_trip_salt']), 0, $config['poster_id_length']); } function generate_tripcode($name, $length = 10){ global $config; $name = stripslashes ( $name ); $t = explode('#', $name); $nameo = $t[0]; if ( isset ( $t[1] ) || isset ( $t[2] ) ) { $trip = ( ( strlen ( $t[1] ) > 0 ) ? $t[1] : $t[2] ); if ( ( function_exists ( 'mb_convert_encoding' ) ) ) { # mb_substitute_character('none'); $recoded_cap = mb_convert_encoding ( $trip, 'Shift_JIS', 'UTF-8' ); } $trip = ( ( ! empty ( $recoded_cap ) ) ? $recoded_cap : $trip ); $salt = substr ( $trip.'H.', 1, 2 ); $salt = preg_replace ( '/[^\.-z]/', '.', $salt ); $salt = strtr ( $salt, ':;<=>?@[\]^_`', 'ABCDEFGabcdef' ); if ( isset ( $t[2] ) ) { // secure $trip = '!!' . substr ( crypt ( $trip, $config['secure_trip_salt'] ), ( -1 * $length ) ); } else { // insecure $trip = '!' . substr ( crypt ( $trip, $salt ), ( -1 * $length ) ); } } if ( isset ( $trip ) ) { return array ( $nameo, $trip ); } else { return array ( $nameo ); } } // Highest common factor function hcf($a, $b){ $gcd = 1; if ($a>$b) { $a = $a+$b; $b = $a-$b; $a = $a-$b; } if ($b==(round($b/$a))*$a) $gcd=$a; else { for($i=round($a/2);$i;$i--) { if ($a == round($a/$i)*$i && $b == round($b/$i)*$i) { $gcd = $i; $i = false; } } } return $gcd; } function fraction($numerator, $denominator, $sep) { $gcf = hcf($numerator, $denominator); $numerator = $numerator / $gcf; $denominator = $denominator / $gcf; return "{$numerator}{$sep}{$denominator}"; } /*********************************************/ /* Fonction: imagecreatefrombmp */ /* Author: DHKold */ /* Contact: admin@dhkold.com */ /* Date: The 15th of June 2005 */ /* Version: 2.0B */ /*********************************************/ function imagecreatefrombmp($filename) { if (! $f1 = fopen($filename,"rb")) return FALSE; $FILE = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14)); if ($FILE['file_type'] != 19778) return FALSE; $BMP = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'. '/Vcompression/Vsize_bitmap/Vhoriz_resolution'. '/Vvert_resolution/Vcolors_used/Vcolors_important', fread($f1,40)); $BMP['colors'] = pow(2,$BMP['bits_per_pixel']); if ($BMP['size_bitmap'] == 0) $BMP['size_bitmap'] = $FILE['file_size'] - $FILE['bitmap_offset']; $BMP['bytes_per_pixel'] = $BMP['bits_per_pixel']/8; $BMP['bytes_per_pixel2'] = ceil($BMP['bytes_per_pixel']); $BMP['decal'] = ($BMP['width']*$BMP['bytes_per_pixel']/4); $BMP['decal'] -= floor($BMP['width']*$BMP['bytes_per_pixel']/4); $BMP['decal'] = 4-(4*$BMP['decal']); if ($BMP['decal'] == 4) $BMP['decal'] = 0; $PALETTE = array(); if ($BMP['colors'] < 16777216) { $PALETTE = unpack('V'.$BMP['colors'], fread($f1,$BMP['colors']*4)); } $IMG = fread($f1,$BMP['size_bitmap']); $VIDE = chr(0); $res = imagecreatetruecolor($BMP['width'],$BMP['height']); $P = 0; $Y = $BMP['height']-1; while ($Y >= 0) { $X=0; while ($X < $BMP['width']) { if ($BMP['bits_per_pixel'] == 24) $COLOR = unpack("V",substr($IMG,$P,3).$VIDE); elseif ($BMP['bits_per_pixel'] == 16) { $COLOR = unpack("n",substr($IMG,$P,2)); $COLOR[1] = $PALETTE[$COLOR[1]+1]; } elseif ($BMP['bits_per_pixel'] == 8) { $COLOR = unpack("n",$VIDE.substr($IMG,$P,1)); $COLOR[1] = $PALETTE[$COLOR[1]+1]; } elseif ($BMP['bits_per_pixel'] == 4) { $COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1)); if (($P*2)%2 == 0) $COLOR[1] = ($COLOR[1] >> 4) ; else $COLOR[1] = ($COLOR[1] & 0x0F); $COLOR[1] = $PALETTE[$COLOR[1]+1]; } elseif ($BMP['bits_per_pixel'] == 1) { $COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1)); if (($P*8)%8 == 0) $COLOR[1] = $COLOR[1] >>7; elseif (($P*8)%8 == 1) $COLOR[1] = ($COLOR[1] & 0x40)>>6; elseif (($P*8)%8 == 2) $COLOR[1] = ($COLOR[1] & 0x20)>>5; elseif (($P*8)%8 == 3) $COLOR[1] = ($COLOR[1] & 0x10)>>4; elseif (($P*8)%8 == 4) $COLOR[1] = ($COLOR[1] & 0x8)>>3; elseif (($P*8)%8 == 5) $COLOR[1] = ($COLOR[1] & 0x4)>>2; elseif (($P*8)%8 == 6) $COLOR[1] = ($COLOR[1] & 0x2)>>1; elseif (($P*8)%8 == 7) $COLOR[1] = ($COLOR[1] & 0x1); $COLOR[1] = $PALETTE[$COLOR[1]+1]; } else return FALSE; imagesetpixel($res,$X,$Y,$COLOR[1]); $X++; $P += $BMP['bytes_per_pixel']; } $Y--; $P+=$BMP['decal']; } fclose($f1); return $res; } function getPostByHash($hash) { global $board; $query = prepare(sprintf("SELECT `id`,`thread` FROM `posts_%s` WHERE `filehash` = :hash", $board['uri'])); $query->bindValue(':hash', $hash, PDO::PARAM_STR); $query->execute() or error(db_error($query)); if($post = $query->fetch()) { return $post; } return false; } function undoImage($post) { if($post['has_file']) @unlink($post['file']); @unlink($post['thumb']); } function createimage($type, $source_pic) { global $config; $image = false; switch($type) { case 'jpg': case 'jpeg': if(!$image = @imagecreatefromjpeg($source_pic)) { unlink($source_pic); error($config['error']['invalidimg']); } break; case 'png': if(!$image = @imagecreatefrompng($source_pic)) { unlink($source_pic); error($config['error']['invalidimg']); } break; case 'gif': if(!$image = @imagecreatefromgif($source_pic)) { unlink($source_pic); error($config['error']['invalidimg']); } break; case 'bmp': if(!$image = @imagecreatefrombmp($source_pic)) { unlink($source_pic); error($config['error']['invalidimg']); } break; default: error($config['error']['unknownext']); } return $image; } function resize($src, $width, $height, $destination_pic, $max_width, $max_height, $ext) { global $config; $return = Array(); $x_ratio = $max_width / $width; $y_ratio = $max_height / $height; if(($width <= $max_width) && ($height <= $max_height)) { $tn_width = $width; $tn_height = $height; } elseif (($x_ratio * $height) < $max_height) { $tn_height = ceil($x_ratio * $height); $tn_width = $max_width; } else { $tn_width = ceil($y_ratio * $width); $tn_height = $max_height; } $return['width'] = $tn_width; $return['height'] = $tn_height; $tmp = imagecreatetruecolor($tn_width, $tn_height); if($ext == 'png' || $ext == 'gif') { imagecolortransparent($tmp, imagecolorallocatealpha($tmp, 0, 0, 0, 0)); imagesavealpha($tmp, true); } if($ext == 'png') imagealphablending($tmp, false); imagecopyresampled($tmp, $src, 0, 0, 0, 0, $tn_width, $tn_height, $width, $height); switch($ext) { case 'jpg': case 'jpeg': imagejpeg($tmp, $destination_pic); break; case 'png': imagepng($tmp, $destination_pic, $config['thumb_quality']); break; case 'gif': imagegif($tmp, $destination_pic); break; case 'bmp': imagebmp($tmp, $destination_pic); break; default: error($config['error']['unknownext']); } imagedestroy($src); imagedestroy($tmp); return $return; } function imagebmp(&$img, $filename='') { $widthOrig = imagesx($img); $widthFloor = ((floor($widthOrig/16))*16); $widthCeil = ((ceil($widthOrig/16))*16); $height = imagesy($img); $size = ($widthCeil*$height*3)+54; // Bitmap File Header $result = 'BM'; // header (2b) $result .= int_to_dword($size); // size of file (4b) $result .= int_to_dword(0); // reserved (4b) $result .= int_to_dword(54); // byte location in the file which is first byte of IMAGE (4b) // Bitmap Info Header $result .= int_to_dword(40); // Size of BITMAPINFOHEADER (4b) $result .= int_to_dword($widthCeil); // width of bitmap (4b) $result .= int_to_dword($height); // height of bitmap (4b) $result .= int_to_word(1); // biPlanes = 1 (2b) $result .= int_to_word(24); // biBitCount = {1 (mono) or 4 (16 clr ) or 8 (256 clr) or 24 (16 Mil)} (2b $result .= int_to_dword(0); // RLE COMPRESSION (4b) $result .= int_to_dword(0); // width x height (4b) $result .= int_to_dword(0); // biXPelsPerMeter (4b) $result .= int_to_dword(0); // biYPelsPerMeter (4b) $result .= int_to_dword(0); // Number of palettes used (4b) $result .= int_to_dword(0); // Number of important colour (4b) // is faster than chr() $arrChr = array(); for($i=0; $i<256; $i++){ $arrChr[$i] = chr($i); } // creates image data $bgfillcolor = array('red'=>0, 'green'=>0, 'blue'=>0); // bottom to top - left to right - attention blue green red !!! $y=$height-1; for ($y2=0; $y2<$height; $y2++) { for ($x=0; $x<$widthFloor; ) { $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; } for ($x=$widthFloor; $x<$widthCeil; $x++) { $rgb = ($x<$widthOrig) ? imagecolorsforindex($img, imagecolorat($img, $x, $y)) : $bgfillcolor; $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; } $y--; } // see imagegif if($filename == '') { echo $result; } else { $file = fopen($filename, 'wb'); fwrite($file, $result); fclose($file); } } // imagebmp helpers function int_to_dword($n) { return chr($n & 255).chr(($n >> 8) & 255).chr(($n >> 16) & 255).chr(($n >> 24) & 255); } function int_to_word($n) { return chr($n & 255).chr(($n >> 8) & 255); } ?>