/libraries/joomla/error/error.php
PHP | 643 lines | 295 code | 74 blank | 274 comment | 42 complexity | 417ff3b6ab6e6856a4a5ef919fad7c50 MD5 | raw file
Possible License(s): BSD-3-Clause, GPL-2.0, LGPL-2.1
- <?php
- /**
- * @copyright Copyright (C) 2005 - 2011 Open Source Matters, Inc. All rights reserved.
- * @license GNU General Public License version 2 or later; see LICENSE
- * @package Joomla.Platform
- * @subpackage Error
- */
- defined('JPATH_PLATFORM') or die;
- // Error Definition: Illegal Options
- define('JERROR_ILLEGAL_OPTIONS', 1);
- // Error Definition: Callback does not exist
- define('JERROR_CALLBACK_NOT_CALLABLE', 2);
- // Error Definition: Illegal Handler
- define('JERROR_ILLEGAL_MODE', 3);
- /**
- * Error Handling Class
- *
- * This class is inspired in design and concept by patErrorManager <http://www.php-tools.net>
- *
- * patErrorManager contributors include:
- * - gERD Schaufelberger <gerd@php-tools.net>
- * - Sebastian Mordziol <argh@php-tools.net>
- * - Stephan Schmidt <scst@php-tools.net>
- *
- * @package Joomla.Platform
- * @subpackage Error
- * @since 11.1
- */
- abstract class JError
- {
- protected static $levels = array(
- E_NOTICE => 'Notice',
- E_WARNING => 'Warning',
- E_ERROR => 'Error'
- );
- protected static $handlers = array(
- E_NOTICE => array('mode' => 'message'),
- E_WARNING => array('mode' => 'message'),
- E_ERROR => array('mode' => 'callback', 'options' => array('JError','customErrorPage'))
- );
- protected static $stack = array();
- /**
- * Method to determine if a value is an exception object. This check supports both JException and PHP5 Exception objects
- *
- * @param mixed &$object Object to check
- * @return boolean True if argument is an exception, false otherwise.
- * @since 11.1
- w
- */
- public static function isError(& $object)
- {
- // supports PHP 5 exception handling
- return $object instanceof Exception;
- }
- /**
- * Method for retrieving the last exception object in the error stack
- *
- * @return mixed Last exception object in the error stack or boolean false if none exist
- * @since 11.1
- */
- public static function getError($unset = false)
- {
- if (!isset(JError::$stack[0])) {
- return false;
- }
- if ($unset) {
- $error = array_shift(JError::$stack);
- }
- else {
- $error = &JError::$stack[0];
- }
- return $error;
- }
- /**
- * Method for retrieving the exception stack
- *
- * @return array Chronological array of errors that have been stored during script execution
- * @since 11.1
- */
- public static function getErrors()
- {
- return JError::$stack;
- }
- /**
- * Method to add non-JError thrown JExceptions to the JError stack for debugging purposes
- *
- * @access public
- * @param object JException
- * @return void
- * @since 11.1
- */
- public static function addToStack(JException &$e) {
- JError::$stack[] = &$e;
- }
- /**
- * Create a new JException object given the passed arguments
- *
- * @param int $level The error level - use any of PHP's own error levels for this: E_ERROR, E_WARNING, E_NOTICE, E_USER_ERROR, E_USER_WARNING, E_USER_NOTICE.
- * @param string $code The application-internal error code for this error
- * @param string $msg The error message, which may also be shown the user if need be.
- * @param mixed $info Optional: Additional error information (usually only developer-relevant information that the user should never see, like a database DSN).
- *
- * @return mixed The JException object
- * @since 11.1
- *
- * @see JException
- */
- public static function raise($level, $code, $msg, $info = null, $backtrace = false)
- {
- jimport('joomla.error.exception');
- // build error object
- $exception = new JException($msg, $code, $level, $info, $backtrace);
- return JError::throwError($exception);
- }
- public static function throwError(&$exception)
- {
- static $thrown = false;
- // If thrown is hit again, we've come back to JError in the middle of throwing another JError, so die!
- if ($thrown) {
- //echo debug_print_backtrace();
- jexit(JText::_('JLIB_ERROR_INFINITE_LOOP'));
- }
- $thrown = true;
- $level = $exception->get('level');
- // see what to do with this kind of error
- $handler = JError::getErrorHandling($level);
- $function = 'handle'.ucfirst($handler['mode']);
- if (is_callable(array('JError', $function))) {
- $reference = call_user_func_array(array('JError',$function), array(&$exception, (isset($handler['options'])) ? $handler['options'] : array()));
- }
- else {
- // This is required to prevent a very unhelpful white-screen-of-death
- jexit(
- 'JError::raise -> Static method JError::' . $function . ' does not exist.' .
- ' Contact a developer to debug' .
- '<br /><strong>Error was</strong> ' .
- '<br />' . $exception->getMessage()
- );
- }
- //we don't need to store the error, since JException already does that for us!
- //remove loop check
- $thrown = false;
- return $reference;
- }
- /**
- * Wrapper method for the {@link raise()} method with predefined error level of E_ERROR and backtrace set to true.
- *
- * @param string $code The application-internal error code for this error
- * @param string $msg The error message, which may also be shown the user if need be.
- * @param mixed $info Optional: Additional error information (usually only developer-relevant information that the user should never see, like a database DSN).
- *
- * @return object $error The configured JError object
- * @since 11.1
- */
- public static function raiseError($code, $msg, $info = null)
- {
- return JError::raise(E_ERROR, $code, $msg, $info, true);
- }
- /**
- * Wrapper method for the {@link raise()} method with predefined error level of E_WARNING and backtrace set to false.
- *
- * @param string $code The application-internal error code for this error
- * @param string $msg The error message, which may also be shown the user if need be.
- * @param mixed $info Optional: Additional error information (usually only developer-relevant information that the user should never see, like a database DSN).
- *
- * @return object $error The configured JError object
- * @since 11.1
- */
- public static function raiseWarning($code, $msg, $info = null)
- {
- return JError::raise(E_WARNING, $code, $msg, $info);
- }
- /**
- * Wrapper method for the {@link raise()} method with predefined error level of E_NOTICE and backtrace set to false.
- *
- * @param string $code The application-internal error code for this error
- * @param string $msg The error message, which may also be shown the user if need be.
- * @param mixed $info Optional: Additional error information (usually only developer-relevant information that the user should never see, like a database DSN).
- *
- * @return object $error The configured JError object
- * @since 11.1
- */
- public static function raiseNotice($code, $msg, $info = null)
- {
- return JError::raise(E_NOTICE, $code, $msg, $info);
- }
- /**
- * Method to get the current error handler settings for a specified error level.
- *
- * @param int $level The error level to retrieve. This can be any of PHP's own error levels, e.g. E_ALL, E_NOTICE...
- *
- * @return array All error handling details
- * @since 11.1
- */
- public static function getErrorHandling($level)
- {
- return JError::$handlers[$level];
- }
- /**
- * Method to set the way the JError will handle different error levels. Use this if you want to override the default settings.
- *
- * Error handling modes:
- * - ignore
- * - echo
- * - verbose
- * - die
- * - message
- * - log
- * - callback
- *
- * You may also set the error handling for several modes at once using PHP's bit operations.
- * Examples:
- * - E_ALL = Set the handling for all levels
- * - E_ERROR | E_WARNING = Set the handling for errors and warnings
- * - E_ALL ^ E_ERROR = Set the handling for all levels except errors
- *
- * @param int $level The error level for which to set the error handling
- * @param string $mode The mode to use for the error handling.
- * @param mixed $options Optional: Any options needed for the given mode.
- *
- * @return mixed True on success, or a JException object if failed.
- * @since 11.1
- */
- public static function setErrorHandling($level, $mode, $options = null)
- {
- $levels = JError::$levels;
- $function = 'handle'.ucfirst($mode);
- if (!is_callable(array ('JError',$function))) {
- return JError::raiseError(E_ERROR, 'JError:'.JERROR_ILLEGAL_MODE, 'Error Handling mode is not known', 'Mode: '.$mode.' is not implemented.');
- }
- foreach ($levels as $eLevel => $eTitle)
- {
- if (($level & $eLevel) != $eLevel) {
- continue;
- }
- // set callback options
- if ($mode == 'callback') {
- if (!is_array($options)) {
- return JError::raiseError(E_ERROR, 'JError:'.JERROR_ILLEGAL_OPTIONS, 'Options for callback not valid');
- }
- if (!is_callable($options)) {
- $tmp = array ('GLOBAL');
- if (is_array($options)) {
- $tmp[0] = $options[0];
- $tmp[1] = $options[1];
- }
- else {
- $tmp[1] = $options;
- }
- return JError::raiseError(E_ERROR, 'JError:'.JERROR_CALLBACK_NOT_CALLABLE, 'Function is not callable', 'Function:'.$tmp[1].' scope '.$tmp[0].'.');
- }
- }
- // save settings
- JError::$handlers[$eLevel] = array ('mode' => $mode);
- if ($options != null) {
- JError::$handlers[$eLevel]['options'] = $options;
- }
- }
- return true;
- }
- /**
- * Method that attaches the error handler to JError
- *
- * @access public
- * @see set_error_handler
- */
- public static function attachHandler()
- {
- set_error_handler(array('JError', 'customErrorHandler'));
- }
- /**
- * Method that dettaches the error handler from JError
- *
- * @access public
- * @see restore_error_handler
- */
- public static function detachHandler()
- {
- restore_error_handler();
- }
- /**
- * Method to register a new error level for handling errors
- *
- * This allows you to add custom error levels to the built-in
- * - E_NOTICE
- * - E_WARNING
- * - E_NOTICE
- *
- * @param int $level Error level to register
- * @param string $name Human readable name for the error level
- * @param string $handler Error handler to set for the new error level [optional]
- *
- * @return boolean True on success; false if the level already has been registered
- * @since 11.1
- */
- public static function registerErrorLevel($level, $name, $handler = 'ignore')
- {
- if (isset(JError::$levels[$level])) {
- return false;
- }
- JError::$levels[$level] = $name;
- JError::setErrorHandling($level, $handler);
- return true;
- }
- /**
- * Translate an error level integer to a human readable string
- * e.g. E_ERROR will be translated to 'Error'
- *
- * @param int $level Error level to translate
- *
- * @return mixed Human readable error level name or boolean false if it doesn't exist
- * @since 11.1
- */
- public static function translateErrorLevel($level)
- {
- if (isset(JError::$levels[$level])) {
- return JError::$levels[$level];
- }
- return false;
- }
- /**
- * Ignore error handler
- * - Ignores the error
- *
- * @param object $error Exception object to handle
- * @param array $options Handler options
- *
- * @return object The exception object
- * @since 11.1
- *
- * @see raise()
- */
- public static function handleIgnore(&$error, $options)
- {
- return $error;
- }
- /**
- * Echo error handler
- * - Echos the error message to output
- *
- * @param object $error Exception object to handle
- * @param array $options Handler options
- *
- * @return object The exception object
- * @since 11.1
- *
- * @see raise()
- */
- public static function handleEcho(&$error, $options)
- {
- $level_human = JError::translateErrorLevel($error->get('level'));
- if (isset ($_SERVER['HTTP_HOST'])) {
- // output as html
- echo "<br /><b>jos-$level_human</b>: ".$error->get('message')."<br />\n";
- }
- else {
- // output as simple text
- if (defined('STDERR')) {
- fwrite(STDERR, "J$level_human: ".$error->get('message')."\n");
- }
- else {
- echo "J$level_human: ".$error->get('message')."\n";
- }
- }
- return $error;
- }
- /**
- * Verbose error handler
- * - Echos the error message to output as well as related info
- *
- * @param object $error Exception object to handle
- * @param array $options Handler options
- *
- * @return object The exception object
- * @since 11.1
- *
- * @see raise()
- */
- public static function handleVerbose(& $error, $options)
- {
- $level_human = JError::translateErrorLevel($error->get('level'));
- $info = $error->get('info');
- if (isset ($_SERVER['HTTP_HOST'])) {
- // output as html
- echo "<br /><b>J$level_human</b>: ".$error->get('message')."<br />\n";
- if ($info != null) {
- echo "   ".$info."<br />\n";
- }
- echo $error->getBacktrace(true);
- }
- else {
- // output as simple text
- echo "J$level_human: ".$error->get('message')."\n";
- if ($info != null) {
- echo "\t".$info."\n";
- }
- }
- return $error;
- }
- /**
- * Die error handler
- * - Echos the error message to output and then dies
- *
- * @param object $error Exception object to handle
- * @param array $options Handler options
- *
- * @return object The exception object
- * @since 11.1
- *
- * @see raise()
- */
- public static function handleDie(& $error, $options)
- {
- $level_human = JError::translateErrorLevel($error->get('level'));
- if (isset ($_SERVER['HTTP_HOST'])) {
- // output as html
- jexit("<br /><b>J$level_human</b>: ".$error->get('message')."<br />\n");
- }
- else {
- // output as simple text
- if (defined('STDERR')) {
- fwrite(STDERR, "J$level_human: ".$error->get('message')."\n");
- jexit();
- }
- else {
- jexit("J$level_human: ".$error->get('message')."\n");
- }
- }
- return $error;
- }
- /**
- * Message error handler
- * - Enqueues the error message into the system queue
- *
- * @param object $error Exception object to handle
- * @param array $options Handler options
- *
- * @return object The exception object
- * @since 11.1
- *
- * @see raise()
- */
- public static function handleMessage(& $error, $options)
- {
- $appl = JFactory::getApplication();
- $type = ($error->get('level') == E_NOTICE) ? 'notice' : 'error';
- $appl->enqueueMessage($error->get('message'), $type);
- return $error;
- }
- /**
- * Log error handler
- * - Logs the error message to a system log file
- *
- * @param object $error Exception object to handle
- * @param array $options Handler options
- *
- * @return object The exception object
- * @since 11.1
- *
- * @see raise()
- */
- public static function handleLog(& $error, $options)
- {
- static $log;
- if ($log == null) {
- jimport('joomla.error.log');
- $fileName = date('Y-m-d').'.error.log';
- $options['format'] = "{DATE}\t{TIME}\t{LEVEL}\t{CODE}\t{MESSAGE}";
- $log = JLog::getInstance($fileName, $options);
- }
- $entry['level'] = $error->get('level');
- $entry['code'] = $error->get('code');
- $entry['message'] = str_replace(array ("\r","\n"), array ('','\\n'), $error->get('message'));
- $log->addEntry($entry);
- return $error;
- }
- /**
- * Callback error handler
- * - Send the error object to a callback method for error handling
- *
- * @param object $error Exception object to handle
- * @param array $options Handler options
- *
- * @return object The exception object
- * @since 11.1
- *
- * @see raise()
- */
- public static function handleCallback(&$error, $options)
- {
- return call_user_func($options, $error);
- }
- /**
- * Display a custom error page and exit gracefully
- *
- * @param object $error Exception object
- * @return void
- * @since 11.1
- */
- public static function customErrorPage(& $error)
- {
- // Initialise variables.
- jimport('joomla.document.document');
- $app = JFactory::getApplication();
- $document = JDocument::getInstance('error');
- $config = JFactory::getConfig();
- // Get the current template from the application
- $template = $app->getTemplate();
- // Push the error object into the document
- $document->setError($error);
- @ob_end_clean();
- $document->setTitle(JText::_('Error').': '.$error->get('code'));
- $data = $document->render(false, array (
- 'template' => $template,
- 'directory' => JPATH_THEMES,
- 'debug' => $config->get('debug')
- ));
- // Do not allow cache
- JResponse::allowCache(false);
- JResponse::setBody($data);
- echo JResponse::toString();
- $app->close(0);
- }
- public static function customErrorHandler($level, $msg)
- {
- JError::raise($level, '', $msg);
- }
- public static function renderBacktrace($error)
- {
- $contents = null;
- $backtrace = $error->getTrace();
- if (is_array($backtrace)) {
- ob_start();
- $j = 1;
- echo '<table border="0" cellpadding="0" cellspacing="0" class="Table">';
- echo ' <tr>';
- echo ' <td colspan="3" class="TD"><strong>Call stack</strong></td>';
- echo ' </tr>';
- echo ' <tr>';
- echo ' <td class="TD"><strong>#</strong></td>';
- echo ' <td class="TD"><strong>Function</strong></td>';
- echo ' <td class="TD"><strong>Location</strong></td>';
- echo ' </tr>';
- for ($i = count($backtrace)-1; $i >= 0 ; $i--)
- {
- echo ' <tr>';
- echo ' <td class="TD">'.$j.'</td>';
- if (isset($backtrace[$i]['class'])) {
- echo ' <td class="TD">'.$backtrace[$i]['class'].$backtrace[$i]['type'].$backtrace[$i]['function'].'()</td>';
- }
- else {
- echo ' <td class="TD">'.$backtrace[$i]['function'].'()</td>';
- }
- if (isset($backtrace[$i]['file'])) {
- echo ' <td class="TD">'.$backtrace[$i]['file'].':'.$backtrace[$i]['line'].'</td>';
- }
- else {
- echo ' <td class="TD"> </td>';
- }
- echo ' </tr>';
- $j++;
- }
- echo '</table>';
- $contents = ob_get_contents();
- ob_end_clean();
- }
- return $contents;
- }
- }