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'; /** * E-Mail address where to send errors * @var boolean */ static protected $email_errors = false; /** * Reporting URL */ static protected $report_url = null; /** * Reporting automatically? */ static protected $report_auto = true; /** * Custom context */ static protected $context = []; /** * Custom exception handlers * @var array */ static protected $custom_handlers = []; /** * Does the terminal support ANSI colors * @var boolean */ static protected $term_color = false; /** * Will be set to true when catching an exception to avoid double catching * with the shutdown function * @var boolean */ static protected $catching = false; /** * Used to store timers and memory consumption * @var array */ static protected $run_trace = []; /** * Handles PHP shutdown on fatal error to be able to catch the error * @return void */ static public function shutdownHandler() { // Stop here if disabled or if the script ended with an exception if (!self::$enabled || self::$catching) return false; $error = error_get_last(); if ($error && in_array($error['type'], [E_ERROR, E_CORE_ERROR, E_COMPILE_ERROR, E_PARSE, E_RECOVERABLE_ERROR, E_USER_ERROR], TRUE)) { // Don't exit at the end, as there might be other shutdown handlers // after this one self::exceptionHandler(new \ErrorException($error['message'], 0, $error['type'], $error['file'], $error['line']), false); } } /** * Internal error handler to throw them as exceptions * (private use) */ static public function errorHandler($severity, $message, $file, $line) { if (!(error_reporting() & $severity)) { // Don't report this error (for example @unlink) return; } $types = [ E_ERROR => 'Fatal error', E_USER_ERROR => 'User error', E_RECOVERABLE_ERROR => 'Recoverable error', E_CORE_ERROR => 'Core error', E_COMPILE_ERROR => 'Compile error', E_PARSE => 'Parse error', E_WARNING => 'Warning', E_CORE_WARNING => 'Core warning', E_COMPILE_WARNING => 'Compile warning', E_USER_WARNING => 'User warning', E_NOTICE => 'Notice', E_USER_NOTICE => 'User notice', E_STRICT => 'Strict standards', E_DEPRECATED => 'Deprecated', E_USER_DEPRECATED => 'User deprecated', ]; $type = array_key_exists($severity, $types) ? $types[$severity] : 'Unknown error'; $message = $type . ': ' . $message; // Catch ASSERT_BAIL errors differently because throwing an exception // in this case results in an execution shutdown, and shutdown handler // isn't even called. See https://bugs.php.net/bug.php?id=53619 if (assert_options(ASSERT_ACTIVE) && assert_options(ASSERT_BAIL) && substr($message, 0, 18) == 'Warning: assert():') { $message .= ' (ASSERT_BAIL detected)'; self::exceptionHandler(new \ErrorException($message, 0, $severity, $file, $line)); return true; } throw new \ErrorException($message, 0, $severity, $file, $line); return true; } /** * Main exception handler * @param object $e Exception or Error (PHP 7) object * @param boolean $exit Exit the script at the end * @return void */ static public function exceptionHandler($e, $exit = true) { self::$catching = true; try { self::reportException($e, $exit); } catch (\Throwable $e2) { echo $e2; echo PHP_EOL . PHP_EOL . $e; exit(1); } catch (\Exception $e2) { echo $e2; echo PHP_EOL . PHP_EOL . $e; exit(1); } return true; } /** * Main exception handler * @param object $e Exception or Error (PHP 7) object * @param boolean $exit Exit the script at the end * @return void */ static public function reportException($e, $exit) { foreach (self::$custom_handlers as $class=>$callback) { if ($e instanceOf $class) { call_user_func($callback, $e); $e = false; break; } } if ($e === false) { if ($exit) { exit(1); } else { return; } } extract(self::buildExceptionReport($e, false)); unset($e); // Log exception to file if (ini_get('log_errors')) { error_log($log); } // Disable any output if it was buffering if (ob_get_level()) { ob_end_clean(); } $is_curl = 0 === strpos($_SERVER['HTTP_USER_AGENT'] ?? '', 'curl/'); $is_cli = PHP_SAPI == 'cli'; if (!$is_cli) { http_response_code(500); } if ($is_curl && !headers_sent()) { header('Content-Type: text/plain; charset=utf-8', true); } if (($is_cli || $is_curl) && (self::$enabled & self::DEVELOPMENT || self::$enabled & self::CLI_DEVELOPMENT)) { foreach ($report->errors as $e) { self::termPrint(sprintf(' /!\\ %s ', $e->type), self::RED); self::termPrint($e->message, self::RED_FAINT); if (isset($e->line)) { self::termPrint(sprintf('Line %d in %s', $e->line, $e->file), self:: YELLOW); } // Ignore the error stack belonging to ErrorManager foreach ($e->backtrace as $i=>$t) { $file = !empty($t->file) ? $t->file : '[internal function]'; $line = !empty($t->line) ? '(' . $t->line . ')' : ''; if (isset($t->args)) { $args = $t->args; foreach ($args as &$arg) { if (strlen($arg) > 20) { $arg = substr($arg, 0, 19) . '…'; } } unset($arg); self::termPrint(sprintf('#%d %s%s: %s(%s)', $i, $file, $line, $t->function, implode(', ', $args))); } else { self::termPrint(sprintf('#%d %s%s', $i, $file, $line)); } } } } else if (($is_cli || $is_curl) && self::$enabled & self::PRODUCTION) { self::termPrint(' /!\\ An internal server error occurred ', self::RED); self::termPrint(' Error reference was: ' . $report->context->id, self::YELLOW); } else if (self::$enabled & self::PRODUCTION) { @header_remove('Content-Disposition'); @header('Content-Type: text/html; charset=utf-8', true); self::htmlProduction($report); } else { if (!headers_sent()) { header_remove(); header('Content-Type: text/html; charset=UTF-8', true); header('HTTP/1.1 500 Internal Server Error', true); } echo $html_report; } // Log exception to email if (self::$email_errors) { self::sendEmail($title, $report, $log, $html_report); } // Send report to URL if (self::$report_auto && self::$report_url) { self::sendReport($report, self::$report_url); } if ($exit) { exit(1); } } static public function reportExceptionSilent(\Throwable $e): void { extract(self::buildExceptionReport($e)); // Log exception to file if (ini_get('log_errors')) { error_log($log); } if (self::$email_errors) { self::sendEmail($title, $report, $log, $html_report); } } static protected function sendEmail(string $title, \stdClass $report, string $log, string $html): void { // From: sender $from = !empty($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] : basename($report->context->root_directory ?? __FILE__); $msgid = $report->context->id . '@' . $from; $boundary = sprintf('-----=%s', md5(uniqid(rand()))); $header = sprintf("MIME-Version: 1.0\r\nFrom: \"%s\" <%s>\r\nIn-Reply-To: <%s>\r\nMessage-Id: <%s>\r\n", $from, self::$email_errors, $msgid, $msgid); $header.= sprintf("Content-Type: multipart/mixed; boundary=\"%s\"\r\n", $boundary); $header.= "\r\n"; $msg = "This message contains multiple MIME parts.\r\n\r\n"; $msg.= sprintf("--%s\r\n", $boundary); $msg.= "Content-Type: text/plain; charset=\"utf-8\"\r\n"; $msg.= "Content-Transfer-Encoding: 8bit\r\n\r\n"; $msg.= $log . "\r\n\r\n"; $msg.= sprintf("--%s\r\n", $boundary); $msg.= "Content-Type: text/html; charset=\"utf-8\"\r\n"; $msg.= "Content-Transfer-Encoding: 8bit\r\n\r\n"; $msg.= $html . "\r\n\r\n"; $msg.= sprintf("--%s--", $boundary); mail(self::$email_errors, sprintf('Error #%s: %s', $report->context->id, $title), $msg, $header); } /** * Prints a line to STDERR, eventually using a color */ static public function termPrint($message, $color = null) { if (!defined('\STDERR')) { echo $message . PHP_EOL; return; } if ($color && self::$term_color) { $message = chr(27) . $color . $message . chr(27) . "[0m"; } fwrite(\STDERR, $message . PHP_EOL); } /** * Return file location without the document root */ static protected function getFileLocation($file) { if (!empty(self::$context['root_directory']) && ($pos = strpos($file, self::$context['root_directory'])) === 0) { return '...' . substr($file, strlen(self::$context['root_directory'])); } return $file; } static public function buildExceptionReport(\Throwable $e, bool $force_html = false): array { $report = self::makeReport($e); $log = sprintf('=========== Error ref. %s ===========', $report->context->id) . PHP_EOL . PHP_EOL . (string) $e . PHP_EOL . PHP_EOL . '' . PHP_EOL . json_encode($report, \JSON_PRETTY_PRINT) . PHP_EOL . '' . PHP_EOL; $html_report = null; if ($force_html || self::$enabled & self::DEVELOPMENT || self::$email_errors) { $html_report = self::htmlReport($report); } $title = $e->getMessage(); return compact('report', 'log', 'html_report', 'title'); } /** * Generates a report from an exception */ static public function makeReport($e) { $report = (object) [ 'errors' => [], ]; while ($e !== null) { $class = get_class($e); $error = (object) [ 'message' => $e->getMessage(), 'errorCode' => $e->getCode(), 'type' => in_array($class, ['ErrorException', 'Error']) ? 'PHP error' : $class, 'backtrace' => [ (object) [ 'file' => $e->getFile() ? self::getFileLocation($e->getFile()) : null, 'line' => $e->getLine(), 'code' => $e->getFile() && $e->getLine() ? self::getSource($e->getFile(), $e->getLine()) : null, ], ], ]; foreach ($e->getTrace() as $i=>$t) { // Ignore the error stack from ErrorManager if (isset($t['class']) && $t['class'] === __CLASS__ && ($t['function'] === 'shutdownHandler' || $t['function'] === 'errorHandler')) { continue; } $args = []; // Display call arguments if (!empty($t['args'])) { // Find arguments variables names via reflection try { if (isset($t['class'])) { $r = new \ReflectionMethod($t['class'], $t['function']); } else { $r = new \ReflectionFunction($t['function']); } $params = $r->getParameters(); } catch (\Exception $_ignore) { $params = []; } foreach ($t['args'] as $name => $value) { if (array_key_exists($name, $params)) { $name = '$' . $params[$name]->name; } if (is_string($value)) { $value = self::getFileLocation($value); } $args[$name] = self::dump($value); if (strlen($args[$name]) > 2000) { $args[$name] = substr($args[$name], 0, 1999) . '…'; } } } $trace = (object) [ // Add class name to function 'function' => isset($t['class']) ? $t['class'] . $t['type'] . $t['function'] : $t['function'], ]; if (isset($t['file'])) { $trace->file = self::getFileLocation($t['file']); } if (isset($t['line'])) { $trace->line = (int) $t['line']; } if (count($args)) { $trace->args = $args; } if (isset($trace->file) && isset($trace->line)) { $trace->code = self::getSource($t['file'], $t['line']); } $error->backtrace[] = $trace; } $report->errors[] = $error; $e = $e->getPrevious(); } unset($error, $e, $params, $t); $context = array_merge([ 'id' => base_convert(substr(sha1(json_encode($report->errors)), 0, 10), 16, 36), 'date' => date(DATE_ATOM), 'os' => PHP_OS, 'language' => 'PHP ' . PHP_VERSION, 'environment' => self::$enabled & self::DEVELOPMENT ? 'development' : 'production:' . self::$enabled, 'php_sapi' => PHP_SAPI, 'remote_ip' => isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : null, 'http_method' => isset($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : null, 'http_files' => self::dump($_FILES), 'http_post' => self::dump($_POST, true), 'duration' => isset(self::$context['request_started']) ? (microtime(true) - self::$context['request_started'])*1000 : null, 'memory_peak' => memory_get_peak_usage(true), 'memory_used' => memory_get_usage(true), ], self::$context); ksort($context); unset($context['request_started']); $report->context = (object) $context; if (!empty($_SERVER['HTTP_HOST']) && !empty($_SERVER['REQUEST_URI'])) { $proto = empty($_SERVER['HTTPS']) ? 'http' : 'https'; $report->context->url = $proto . '://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']; } return $report; } /** * Displays an exception as HTML debug page */ static public function htmlException(\stdClass $e): string { $out = sprintf('

%s

', $e->type, nl2br(htmlspecialchars($e->message))); foreach ($e->backtrace as $i=>$t) { $out .= '

'; if (isset($t->file) && isset($t->line)) { $dir = dirname($t->file); $dir = $dir == '/' ? $dir : $dir . '/'; $out .= sprintf('

in %s%s:%d

', htmlspecialchars($dir), htmlspecialchars(basename($t->file)), $t->line); } if (isset($t->function)) { $out .= sprintf('

→ %s (%d arg.)

', htmlspecialchars($t->function), isset($t->args) ? count($t->args) : 0); // Display call arguments if (!empty($t->args)) { $out .= ''; foreach ($t->args as $name => $value) { $out .= sprintf('', htmlspecialchars($name), htmlspecialchars($value)); } $out .= '

%s	%s

'; } } // Display source code if (isset($t->code) && isset($t->line)) { $out .= self::htmlSource($t->code, $t->line); } $out .= '

'; } $out .= '

'; return $out; } static public function htmlSource(array $source, $line) { $out = ''; foreach ($source as $i => $code) { $html = '' . ($i) . '' . htmlspecialchars($code, ENT_QUOTES); if ($i == $line) { $html = '' . $html . ''; } $out .= $html . PHP_EOL; } return '

' . $out . '

'; } /** * Get source code * @param string $file File location * @param integer $line Line to highlight * @return array */ static public function getSource($file, $line) { $out = []; $start = max(0, $line - 5); if (!file_exists($file)) { return [$line => 'Source file not found']; } $file = new \SplFileObject($file); $file->seek($start); for ($i = $start + 1; $i < $start+10; $i++) { if ($file->eof()) { break; } $out[$i] = trim($file->current(), "\r\n"); $file->next(); } unset($file); return $out; } static public function htmlProduction(\stdClass $report) { if (!headers_sent()) { header_remove(); header('HTTP/1.1 500 Internal Server Error', true, 500); header('Content-Type: text/html; charset=UTF-8', true); } echo self::htmlTemplate(self::$production_error_template, $report); } static public function htmlTemplate($str, \stdClass $report) { $str = strtr($str, [ '{$ref}' => $report->context->id, '{$report_json}' => htmlspecialchars(base64_encode(json_encode($report)), ENT_QUOTES), '{$report_url}' => htmlspecialchars((string) self::$report_url), ]); $str = preg_replace_callback('!(.*?)!is', function ($match) { switch ($match[1]) { case 'sent': case 'email': return self::$email_errors || (self::$report_auto && self::$report_url) ? $match[2] : ''; case 'logged': case 'log': return ini_get('error_log') ? $match[2] : ''; case 'report': return (!self::$report_auto && self::$report_url) ? $match[2] : ''; } }, $str); return $str; } static public function htmlReport(\stdClass $report): string { $out = ''; // Display debug $out .= self::htmlTemplate(ini_get('error_prepend_string'), $report); foreach ($report->errors as $e) { $out .= self::htmlException($e); } $out .= '

Context

'; foreach ($report->context as $name => $value) { $out .= sprintf('', htmlspecialchars($name), htmlspecialchars($value ?? '')); } $out .= '

%s	%s

'; $out .= self::htmlTemplate(ini_get('error_append_string'), $report); return $out; } /** * Enable error manager * @param integer $type Type of error management (ErrorManager::PRODUCTION or ErrorManager::DEVELOPMENT) * You can also use ErrorManager::PRODUCTION | ErrorManager::CLI_DEVELOPMENT to get error messages in CLI but still hide errors * on web front-end. * @return void */ static public function enable($type = self::DEVELOPMENT) { if (self::$enabled) return true; self::$context['request_started'] = $_SERVER['REQUEST_TIME_FLOAT'] ?? microtime(true); self::$enabled = $type; self::$term_color = function_exists('posix_isatty') && defined('\STDOUT') && @posix_isatty(\STDOUT); ini_set('display_errors', false); ini_set('log_errors', false); ini_set('html_errors', false); ini_set('zend.exception_ignore_args', false); // We want to get the args in exceptions (since PHP 7.4) error_reporting($type & self::DEVELOPMENT ? -1 : E_ALL & ~E_DEPRECATED & ~E_STRICT); if ($type & self::DEVELOPMENT && PHP_SAPI != 'cli') { self::setHtmlHeader('

 \__/
 (xx)
//||\\\\

'); } register_shutdown_function([self::class, 'shutdownHandler']); set_exception_handler([__CLASS__, 'exceptionHandler']); set_error_handler([__CLASS__, 'errorHandler']); if ($type & self::DEVELOPMENT) { self::startTimer('_global'); } // Assign default context static $defaults = [ 'hostname' => 'SERVER_NAME', 'http_user_agent' => 'HTTP_USER_AGENT', 'http_referrer' => 'HTTP_REFERER', 'user_addr' => 'REMOTE_ADDR', 'server_addr' => 'SERVER_ADDR', 'root_directory' => 'DOCUMENT_ROOT', ]; foreach ($defaults as $a => $b) { if (isset($_SERVER[$b]) && !isset(self::$context[$a])) { self::$context[$a] = $_SERVER[$b]; } } } /** * Reset error management to PHP defaults * @return boolean */ static public function disable() { self::$enabled = false; ini_set('error_prepend_string', null); ini_set('error_append_string', null); ini_set('log_errors', false); ini_set('display_errors', false); ini_set('error_reporting', E_ALL & ~E_DEPRECATED & ~E_STRICT); restore_error_handler(); return restore_exception_handler(); } /** * Sets a microsecond timer to track time and memory usage * @param string $name Timer name */ static public function startTimer($name) { self::$run_trace[$name] = [microtime(true), memory_get_usage()]; } /** * Stops a timer and return time spent and memory used * @param string $name Timer name */ static public function stopTimer($name) { self::$run_trace[$name] = [ microtime(true) - self::$run_trace[$name][0], memory_get_usage() - self::$run_trace[$name][1], ]; return self::$run_trace[$name]; } /** * Sets a log file to record errors * @param string $file Error log file */ static public function setLogFile($file) { ini_set('log_errors', true); return ini_set('error_log', $file); } /** * Sets an email address that should receive the logs * Set to FALSE to disable email sending (default) * @param string $email Email address */ static public function setEmail($email) { self::$email_errors = $email; } /** * @deprecated */ static public function setExtraDebugEnv($env) { self::setContext($env); } /** * Set the report context * @param mixed $env Variable content, could be application version, or an array of information... */ static public function setContext(array $context) { self::$context = array_merge(self::$context, $context); } /** * Enable or disable reporting of errors to a remote URL * @param null|string $url Reporting URL * @param boolean $auto Automatic reporting? If not users will be able to report the error by clicking a button on the error page */ static public function setRemoteReporting($url, $auto) { self::$report_url = empty($url) ? null : $url; self::$report_auto = (bool) $auto; } /** * Set the HTML header used by the debug error page * @param string $html HTML header */ static public function setHtmlHeader($html) { ini_set('error_prepend_string', $html); } /** * Set the HTML footer used by the debug error page * @param string $html HTML footer */ static public function setHtmlFooter($html) { ini_set('error_append_string', $html); } /** * Set the content of the HTML template used to display an error in production * {$ref} will be replaced by the error reference if log or email is enabled * ... block will be removed if email reporting is disabled * ... block will be removed if log reporting is disabled * @param string $html HTML template */ static public function setProductionErrorTemplate($html) { self::$production_error_template = $html; } static public function setCustomExceptionHandler($class, Callable $callback) { self::$custom_handlers[$class] = $callback; } static public function debug(...$vars) { echo '

';
		foreach ($vars as $var) {
			echo self::dump($var);
			echo '';
		}
		echo '

'; } /** * Copy of var_dump but returns a string instead of a variable * @param mixed $var variable to dump * @param bool $hide_values Do not return values if set to TRUE * @param integer $level Indentation level (internal use) * @return string */ static public function dump($var, $hide_values = false, $level = 0) { if ($level > 20) { return '*RECURSION*'; } switch (gettype($var)) { case 'boolean': return 'bool(' . ($var ? 'true' : 'false') . ')'; case 'integer': return 'int(' . $var . ')'; case 'double': return 'float(' . $var . ')'; case 'string': return 'string(' . strlen($var) . ') "' . ($hide_values ? '***HIDDEN***' : $var) . '"'; case 'NULL': return 'NULL'; case 'resource': return 'resource(' . (int)$var . ') of type (' . get_resource_type($var) . ')'; case 'array': case 'object': if (is_object($var)) { $out = 'object(' . get_class($var) . ') (' . count((array) $var) . ') {' . PHP_EOL; } else { $out = 'array(' . count((array) $var) . ') {' . PHP_EOL; } $level++; if ($var instanceof \Traversable) { $var2 = []; // Iterate as long as we can while (@$var->valid()) { $var2[] = $var->current(); $var->next(); } $var = $var2; } foreach ($var as $key=>$value) { $out .= str_repeat(' ', $level * 2); $out .= is_string($key) ? '["' . $key . '"]' : '[' . $key . ']'; $out .= '=> ' . self::dump($value, $hide_values, $level) . PHP_EOL; } $out .= str_repeat(' ', --$level * 2) . '}'; return $out; default: return gettype($var); } } /** * Upload a report to a remote errbit-compatible API * @see https://airbrake.io/docs/api/#create-notice-v3 */ static public function sendReport(\stdClass $report, $url) { $data = json_encode($report); $headers = [ 'Content-Type: application/json', 'Content-Lenth: ' . strlen($data), ]; if (function_exists('curl_init')) { $ch = curl_init($url); curl_setopt_array($ch, [ CURLOPT_HTTPHEADER => $headers, CURLOPT_RETURNTRANSFER => true, CURLOPT_FOLLOWLOCATION => false, CURLOPT_MAXREDIRS => 3, CURLOPT_CUSTOMREQUEST => 'POST', CURLOPT_TIMEOUT => 10, CURLOPT_POSTFIELDS => $data, ]); $body = curl_exec($ch); $code = curl_getinfo($ch, CURLINFO_HTTP_CODE); curl_close($ch); } else { $opts = ['http' => [ 'method' => 'POST', 'header' => $headers, 'content' => $data, 'max_redirects' => 3, 'timeout' => 10, 'ignore_errors' => true, ]]; $body = file_get_contents($url, false, stream_context_create($opts)); $code = null; foreach ($http_response_header as $header) { $a = substr($header, 0, 7); if ($a == 'HTTP/1.') { $code = substr($header, 11, 3); } } unset($http_response_header); } return [ 'code' => (int) $code, 'body' => $body, 'data' => json_decode($body), ]; } /** * Returns list of reports from error log * * @param string|null $log_file Log file to use, if NULL then the log file set in error_log will be used * @param string|null $filter_id Only return errors matching with this ID */ static public function getReportsFromLog($log_file = null, $filter_id = null) { if (!$log_file) { $log_file = ini_get('error_log'); } if (!file_exists($log_file)) { return []; } $reports = []; $report = null; foreach (file($log_file) as $line) { $line = trim($line); if ($line == '') { $report = ''; } elseif ($line == '') { $report = json_decode($report); if (!is_null($report) && isset($report->context->id) && (!$filter_id || $filter_id == $report->context->id)) { $reports[] = $report; } $report = null; } elseif ($report !== null) { $report .= $line; } } unset($line, $report, $log_file); return $reports; } }