ErrorHandler.php

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<?php
namespace TYPO3\CMS\Core\Error;

use TYPO3\CMS\Core\Utility\GeneralUtility;

class ErrorHandler implements ErrorHandlerInterface {

    protected $exceptionalErrors = array();

    public function __construct($errorHandlerErrors) {
        $excludedErrors = E_COMPILE_WARNING | E_COMPILE_ERROR | E_CORE_WARNING | E_CORE_ERROR | E_PARSE | E_ERROR;
        // reduces error types to those a custom error handler can process
        $errorHandlerErrors = $errorHandlerErrors & ~$excludedErrors;
        set_error_handler(array($this, 'handleError'), $errorHandlerErrors);
    }

    public function setExceptionalErrors($exceptionalErrors) {
        $this->exceptionalErrors = (int)$exceptionalErrors;
    }

    public function handleError($errorLevel, $errorMessage, $errorFile, $errorLine) {
        // Don't do anything if error_reporting is disabled by an @ sign
        if (error_reporting() === 0) {
            return TRUE;
        }
        $errorLevels = array(
            E_WARNING => 'Warning',
            E_NOTICE => 'Notice',
            E_USER_ERROR => 'User Error',
            E_USER_WARNING => 'User Warning',
            E_USER_NOTICE => 'User Notice',
            E_STRICT => 'Runtime Notice',
            E_RECOVERABLE_ERROR => 'Catchable Fatal Error',
            E_DEPRECATED => 'Runtime Deprecation Notice'
        );
        $message = 'PHP ' . $errorLevels[$errorLevel] . ': ' . $errorMessage . ' in ' . $errorFile . ' line ' . $errorLine;
        if ($errorLevel & $this->exceptionalErrors) {
            // handle error raised at early parse time
            // autoloader not available & built-in classes not resolvable
            if (!class_exists('stdClass', FALSE)) {
                $message = 'PHP ' . $errorLevels[$errorLevel] . ': ' . $errorMessage . ' in ' . basename($errorFile) .
                    'line ' . $errorLine;
                die($message);
            }
            // We need to manually require the exception classes in case
            // the autoloader is not available at this point yet.
            // @see http://forge.typo3.org/issues/23444
            if (!class_exists('TYPO3\\CMS\\Core\\Error\\Exception', FALSE)) {
                require_once PATH_site . 'typo3/sysext/core/Classes/Exception.php';
                require_once PATH_site . 'typo3/sysext/core/Classes/Error/Exception.php';
            }
            throw new Exception($message, 1);
        } else {
            switch ($errorLevel) {
                case E_USER_ERROR:

                case E_RECOVERABLE_ERROR:
                    $severity = 2;
                    break;
                case E_USER_WARNING:

                case E_WARNING:
                    $severity = 1;
                    break;
                default:
                    $severity = 0;
            }
            $logTitle = 'Core: Error handler (' . TYPO3_MODE . ')';
            // Write error message to the configured syslogs,
            // see: $TYPO3_CONF_VARS['SYS']['systemLog']
            if ($errorLevel & $GLOBALS['TYPO3_CONF_VARS']['SYS']['syslogErrorReporting']) {
                GeneralUtility::sysLog($message, $logTitle, $severity);
            }
            // Write error message to devlog extension(s),
            // see: $TYPO3_CONF_VARS['SYS']['enable_errorDLOG']
            if (TYPO3_ERROR_DLOG) {
                GeneralUtility::devLog($message, $logTitle, $severity + 1);
            }
            // Write error message to TSlog (admin panel)
            if (is_object($GLOBALS['TT'])) {
                $GLOBALS['TT']->setTSlogMessage($logTitle . ': ' . $message, $severity + 1);
            }
            // Write error message to sys_log table (ext: belog, Tools->Log)
            if ($errorLevel & $GLOBALS['TYPO3_CONF_VARS']['SYS']['belogErrorReporting']) {
                // Silently catch in case an error occurs before a database connection exists,
                // but DatabaseConnection fails to connect.
                try {
                    $this->writeLog($logTitle . ': ' . $message, $severity);
                } catch (\Exception $e) {
                }
            }
            if ($severity === 2) {
                // Let the internal handler continue. This will stop the script
                return FALSE;
            } else {
                // Add error message to the flashmessageQueue
                if (defined('TYPO3_ERRORHANDLER_MODE') && TYPO3_ERRORHANDLER_MODE == 'debug') {
                    $flashMessage = GeneralUtility::makeInstance(
                        'TYPO3\\CMS\\Core\\Messaging\\FlashMessage',
                        $message,
                        'PHP ' . $errorLevels[$errorLevel],
                        $severity
                    );
                    $flashMessageService = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Messaging\\FlashMessageService');
                    $defaultFlashMessageQueue = $flashMessageService->getMessageQueueByIdentifier();
                    $defaultFlashMessageQueue->enqueue($flashMessage);
                }
                // Don't execute PHP internal error handler
                return TRUE;
            }
        }
    }

    protected function writeLog($logMessage, $severity) {
        if (is_object($GLOBALS['TYPO3_DB']) && $GLOBALS['TYPO3_DB']->isConnected()) {
            $userId = 0;
            $workspace = 0;
            if (is_object($GLOBALS['BE_USER'])) {
                if (isset($GLOBALS['BE_USER']->user['uid'])) {
                    $userId = $GLOBALS['BE_USER']->user['uid'];
                }
                if (isset($GLOBALS['BE_USER']->workspace)) {
                    $workspace = $GLOBALS['BE_USER']->workspace;
                }
            }
            $fields_values = array(
                'userid' => $userId,
                'type' => 5,
                'action' => 0,
                'error' => $severity,
                'details_nr' => 0,
                'details' => $logMessage,
                'IP' => (string)GeneralUtility::getIndpEnv('REMOTE_ADDR'),
                'tstamp' => $GLOBALS['EXEC_TIME'],
                'workspace' => $workspace
            );
            $GLOBALS['TYPO3_DB']->exec_INSERTquery('sys_log', $fields_values);
        }
    }

}