'; echo '

Flagrant System error

'; echo "

Message

$message

"; if (strpos($message, 'Database') !== false) { echo '

Try running database setup

'; } echo "

"; if (defined('CONFIG_DEBUG') && CONFIG_DEBUG) { global $SLX_ERRORS; if (!empty($SLX_ERRORS)) { echo '

PHP Errors

';
				foreach ($SLX_ERRORS as $error) {
					echo htmlspecialchars("{$error['errstr']} ({$error['errfile']}:{$error['errline']}\n");
				}
				echo '

'; } echo "

Stack Trace

"; echo '

', self::formatBacktraceHtml(debug_backtrace()), '

'; echo "

Globals

";
			echo htmlspecialchars(print_r($GLOBALS, true));
			echo '

'; } else { echo << ________________________¶¶¶¶¶¶¶¶¶¶¶¶¶¶¶¶¶¶¶________ ____________________¶¶¶___________________¶¶¶¶_____ ________________¶¶¶_________________________¶¶¶¶___ ______________¶¶______________________________¶¶¶__ ___________¶¶¶_________________________________¶¶¶_ _________¶¶_____________________________________¶¶¶ ________¶¶_________¶¶¶¶¶___________¶¶¶¶¶_________¶¶ ______¶¶__________¶¶¶¶¶¶__________¶¶¶¶¶¶_________¶¶ _____¶¶___________¶¶¶¶____________¶¶¶¶___________¶¶ ____¶¶___________________________________________¶¶ ___¶¶___________________________________________¶¶_ __¶¶____________________¶¶¶¶____________________¶¶_ _¶¶_______________¶¶¶¶¶¶¶¶¶¶¶¶¶¶¶______________¶¶__ _¶¶____________¶¶¶¶___________¶¶¶¶¶___________¶¶___ ¶¶¶_________¶¶¶__________________¶¶__________¶¶____ ¶¶_________¶______________________¶¶________¶¶_____ ¶¶¶______¶________________________¶¶_______¶¶______ ¶¶¶_____¶_________________________¶¶_____¶¶________ _¶¶¶___________________________________¶¶__________ __¶¶¶________________________________¶¶____________ ___¶¶¶____________________________¶¶_______________ ____¶¶¶¶______________________¶¶¶__________________ _______¶¶¶¶¶_____________¶¶¶¶¶_____________________ SADFACE; } echo ''; exit(0); } public static function formatBacktraceHtml($trace, $escape = true) { $output = ''; foreach ($trace as $idx => $line) { $args = array(); foreach ($line['args'] as $arg) { if (is_string($arg)) { $arg = "'$arg'"; } elseif (is_object($arg)) { $arg = 'instanceof ' . get_class($arg); } elseif (is_array($arg)) { $arg = 'Array(' . count($arg) . ')'; } $args[] = '' . htmlspecialchars($arg) . ''; } $frame = str_pad('#' . $idx, 3, ' ', STR_PAD_LEFT); $function = htmlspecialchars($line['function']); $args = implode(', ', $args); $file = preg_replace('~(/[^/]+)$~', '$1', htmlspecialchars($line['file'])); // Add line $output .= $frame . ' ' . $function . '(' . $args . ')' . ' @ ' . $file . ':' . $line['line'] . "\n"; } return $output; } public static function formatBacktracePlain($trace) { $output = ''; foreach ($trace as $idx => $line) { $args = array(); foreach ($line['args'] as $arg) { if (is_string($arg)) { $arg = "'$arg'"; } elseif (is_object($arg)) { $arg = 'instanceof ' . get_class($arg); } elseif (is_array($arg)) { $arg = 'Array(' . count($arg) . ')'; } $args[] = $arg; } $frame = str_pad('#' . $idx, 3, ' ', STR_PAD_LEFT); $args = implode(', ', $args); // Add line $output .= "\n" . $frame . ' ' . $line['function'] . '(' . $args . ')' . ' @ ' . $line['file'] . ':' . $line['line']; } return $output; } /** * Redirects the user via a '302 Moved' header. * An active session will be saved, any messages that haven't * been displayed yet will be appended to the redirect. * @param string $location Location to redirect to. "false" to redirect to same URL (useful after POSTs) */ public static function redirect($location = false) { if ($location === false) { $location = preg_replace('/(&|\?)message\[\]\=[^&]*/', '\1', $_SERVER['REQUEST_URI']); } Session::save(); $messages = Message::toRequest(); if (!empty($messages)) { if (strpos($location, '?') === false) { $location .= '?' . $messages; } else { $location .= '&' . $messages; } } if (!empty(self::$redirectParams)) { if (strpos($location, '?') === false) { $location .= '?' . implode('&', self::$redirectParams); } else { $location .= '&' . implode('&', self::$redirectParams); } } Header('Location: ' . $location); exit(0); } public static function addRedirectParam($key, $value) { self::$redirectParams[] = $key .= '=' . urlencode($value); } /** * Verify the user's token that protects against CSRF. * If the user is logged in and there is no token variable set in * the request, or the submitted token does not match the user's * token, this function will return false and display an error. * If the token matches, or the user is not logged in, it will return true. */ public static function verifyToken() { if (!User::isLoggedIn() && Session::get('token') === false) return true; if (isset($_REQUEST['token']) && Session::get('token') === $_REQUEST['token']) return true; Message::addError('main.token'); return false; } /** * Simple markup "rendering": * *word* is bold * /word/ is italics * _word_ is underlined * \n is line break */ public static function markup($string) { $string = htmlspecialchars($string); $string = preg_replace('#(^|[\n \-_/\.])\*(.+?)\*($|[ \-_/\.\!\?,:])#is', '$1$2$3', $string); $string = preg_replace('#(^|[\n \-\*/\.])_(.+?)_($|[ \-\*/\.\!\?,:])#is', '$1$2$3', $string); $string = preg_replace('#(^|[\n \-_\*\.])/(.+?)/($|[ \-_\*\.\!\?,:])#is', '$1$2$3', $string); return nl2br($string); } /** * Convert given number to human readable file size string. * Will append Bytes, KiB, etc. depending on magnitude of number. * * @param type $bytes numeric value of the filesize to make readable * @param type $decimals number of decimals to show, -1 for automatic * @return type human readable string representing the given filesize */ public static function readableFileSize($bytes, $decimals = -1) { static $sz = array('Byte', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB'); $factor = floor((strlen($bytes) - 1) / 3); if ($factor == 0) { $decimals = 0; } elseif ($decimals === -1) { $decimals = 2 - floor((strlen($bytes) - 1) % 3); } return sprintf("%.{$decimals}f ", $bytes / pow(1024, $factor)) . $sz[$factor]; } public static function sanitizeFilename($name) { return preg_replace('/[^a-zA-Z0-9_\-]+/', '_', $name); } public static function safePath($path, $prefix = '') { if (empty($path)) return false; $path = trim($path); if ($path{0} == '/' || preg_match('/[\x00-\x19\?\*]/', $path)) return false; if (strpos($path, '..') !== false) return false; if (substr($path, 0, 2) !== './') $path = "./$path"; if (empty($prefix)) return $path; if (substr($prefix, 0, 2) !== './') $prefix = "./$prefix"; if (substr($path, 0, strlen($prefix)) !== $prefix) return false; return $path; } /** * Create human readable error description from a $_FILES[<..>]['error'] code * * @param int $code the code to turn into an error description * @return string the error description */ public static function uploadErrorString($code) { switch ($code) { case UPLOAD_ERR_INI_SIZE: $message = "The uploaded file exceeds the upload_max_filesize directive in php.ini"; break; case UPLOAD_ERR_FORM_SIZE: $message = "The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form"; break; case UPLOAD_ERR_PARTIAL: $message = "The uploaded file was only partially uploaded"; break; case UPLOAD_ERR_NO_FILE: $message = "No file was uploaded"; break; case UPLOAD_ERR_NO_TMP_DIR: $message = "Missing a temporary folder"; break; case UPLOAD_ERR_CANT_WRITE: $message = "Failed to write file to disk"; break; case UPLOAD_ERR_EXTENSION: $message = "File upload stopped by extension"; break; default: $message = "Unknown upload error"; break; } return $message; } /** * Is given string a public ipv4 address? * * @param string $ip_addr input to check * @return boolean true iff $ip_addr is a valid public ipv4 address */ public static function isPublicIpv4($ip_addr) { if (!preg_match("/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/", $ip_addr)) return false; $parts = explode(".", $ip_addr); foreach ($parts as $part) { if (!is_numeric($part) || $part > 255 || $part < 0) return false; } if ($parts[0] == 0 || $parts[0] == 10 || $parts[0] == 127 || ($parts[0] > 223 && $parts[0] < 240)) return false; if (($parts[0] == 192 && $parts[1] == 168) || ($parts[0] == 169 && $parts[1] == 254)) return false; if ($parts[0] == 172 && $parts[1] > 15 && $parts[1] < 32) return false; return true; } /** * Check whether $arrax contains all keys given in $keyList * @param array $array An array * @param array $keyList A list of strings which must all be valid keys in $array * @return boolean */ public static function hasAllKeys($array, $keyList) { if (!is_array($array)) return false; foreach ($keyList as $key) { if (!isset($array[$key])) return false; } return true; } /** * Send a file to user for download. * * @param type $file path of local file * @param type $name name of file to send to user agent * @param type $delete delete the file when done? * @return boolean false: file could not be opened. * true: error while reading the file * - on success, the function does not return */ public static function sendFile($file, $name, $delete = false) { while ((@ob_get_level()) > 0) @ob_end_clean(); $fh = @fopen($file, 'rb'); if ($fh === false) { Message::addError('main.error-read', $file); return false; } Header('Content-Type: application/octet-stream', true); Header('Content-Disposition: attachment; filename=' . str_replace(array(' ', '=', ',', '/', '\\', ':', '?'), '_', iconv('UTF-8', 'ASCII//TRANSLIT', $name))); Header('Content-Length: ' . @filesize($file)); while (!feof($fh)) { $data = fread($fh, 16000); if ($data === false) { echo "\r\n\nDOWNLOAD INTERRUPTED!\n"; if ($delete) @unlink($file); return true; } echo $data; @ob_flush(); @flush(); } @fclose($fh); if ($delete) @unlink($file); exit(0); } }