TrackManiaControl/application/core/ErrorHandler.php

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<?php
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namespace ManiaControl;
use ManiaControl\Callbacks\Callbacks;
use ManiaControl\Plugins\PluginManager;
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use ManiaControl\Update\UpdateManager;
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use ManiaControl\Utils\Formatter;
use ManiaControl\Utils\WebReader;
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use Maniaplanet\DedicatedServer\Xmlrpc\TransportException;
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/**
* Error and Exception Manager Class
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*
* @author ManiaControl Team <mail@maniacontrol.com>
* @copyright 2014 ManiaControl Team
* @license http://www.gnu.org/licenses/ GNU General Public License, Version 3
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*/
class ErrorHandler {
/*
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* Constants
*/
const MC_DEBUG_NOTICE = 'ManiaControl.DebugNotice';
const SETTING_RESTART_ON_EXCEPTION = 'Automatically restart on Exceptions';
const LOG_SUPPRESSED_ERRORS = false;
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/*
* Private properties
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*/
/** @var ManiaControl $maniaControl */
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private $maniaControl = null;
private $handlingError = null;
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/**
* Construct a new error handler instance
*
* @param ManiaControl $maniaControl
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*/
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public function __construct(ManiaControl $maniaControl) {
$this->maniaControl = $maniaControl;
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set_error_handler(array(&$this, 'handleError'), -1);
set_exception_handler(array(&$this, 'handleException'));
register_shutdown_function(array(&$this, 'handleShutdown'));
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}
/**
* Initialize error handler features
*/
public function init() {
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$this->maniaControl->getSettingManager()->initSetting($this, self::SETTING_RESTART_ON_EXCEPTION, true);
}
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/**
* Trigger a Debug Notice to the ManiaControl Website
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*
* @param string $message
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*/
public function triggerDebugNotice($message) {
$this->handleError(self::MC_DEBUG_NOTICE, $message);
}
/**
* ManiaControl Error Handler
*
* @param int $errorNumber
* @param string $errorString
* @param string $errorFile
* @param int $errorLine
* @param array $errorContext
* @param bool $onShutdown
* @return bool
*/
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public function handleError($errorNumber, $errorString, $errorFile = null, $errorLine = -1, array $errorContext = array(), $onShutdown = false) {
$suppressed = (error_reporting() === 0);
if ($suppressed && !self::LOG_SUPPRESSED_ERRORS) {
return false;
}
if (!$this->handlingError) {
// Reset error handler for safety
$this->handlingError = true;
set_error_handler(array(&$this, 'handleError'), -1);
}
// Build log message
$errorTag = $this->getErrorTag($errorNumber);
$isUserError = self::isUserErrorNumber($errorNumber);
$isFatalError = self::isFatalError($errorNumber);
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$traceString = null;
$sourceClass = null;
$traceSourceClass = null;
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$fileLine = null;
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$message = $errorTag . ': ' . $errorString;
if (!$onShutdown) {
$traceString = $this->parseBackTrace(array_slice(debug_backtrace(), 1), $traceSourceClass);
}
if ($errorFile) {
$fileLine = $errorFile . ': ' . $errorLine;
$sourceClass = $this->getSourceClass($errorFile);
}
if (!$sourceClass && $traceSourceClass) {
$sourceClass = $traceSourceClass;
}
$logMessage = $message . PHP_EOL . 'File&Line: ' . $fileLine;
if (!$isUserError && $traceString) {
$logMessage .= PHP_EOL . 'Trace: ' . PHP_EOL . $traceString;
}
Logger::log($logMessage);
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if (!DEV_MODE && !$isUserError && !$suppressed) {
// Report error
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$report = array();
$report['Type'] = 'Error';
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$report['Message'] = $message;
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if ($fileLine) {
$report['FileLine'] = self::stripBaseDir($fileLine);
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}
if ($sourceClass) {
$report['SourceClass'] = $sourceClass;
$pluginId = PluginManager::getPluginId($sourceClass);
if ($pluginId > 0) {
$report['PluginId'] = $pluginId;
if ($isFatalError) {
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$this->maniaControl->getPluginManager()->deactivatePlugin($sourceClass);
}
}
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}
if ($traceString) {
$report['Backtrace'] = $traceString;
}
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$report['OperatingSystem'] = php_uname();
$report['PHPVersion'] = phpversion();
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if ($this->maniaControl->getServer()) {
$report['ServerLogin'] = $this->maniaControl->getServer()->login;
}
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if ($this->maniaControl->getSettingManager() && $this->maniaControl->getUpdateManager()) {
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$report['UpdateChannel'] = $this->maniaControl->getSettingManager()->getSettingValue($this->maniaControl->getUpdateManager(), UpdateManager::SETTING_UPDATECHECK_CHANNEL);
$report['ManiaControlVersion'] = ManiaControl::VERSION . ' ' . $this->maniaControl->getUpdateManager()->getNightlyBuildDate();
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} else {
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$report['ManiaControlVersion'] = ManiaControl::VERSION;
}
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$json = json_encode(Formatter::utf8($report));
$info = base64_encode($json);
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$url = ManiaControl::URL_WEBSERVICE . 'errorreport?error=' . urlencode($info);
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$response = WebReader::getUrl($url);
$content = $response->getContent();
$success = json_decode($content);
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if ($success) {
Logger::log('Error-Report successful!');
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} else {
Logger::log('Error-Report failed! ' . print_r($content, true));
}
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}
if ($isFatalError) {
$this->maniaControl->quit('Quitting ManiaControl after Fatal Error.');
}
// Disable safety state
$this->handlingError = false;
return false;
}
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/**
* Get the Prefix for the given Error Level
*
* @param int $errorLevel
* @return string
*/
public function getErrorTag($errorLevel) {
switch ($errorLevel) {
case E_ERROR:
return '[PHP ERROR]';
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case E_WARNING:
return '[PHP WARNING]';
case E_PARSE:
return '[PHP PARSE ERROR]';
case E_NOTICE:
return '[PHP NOTICE]';
case E_CORE_ERROR:
return '[PHP CORE ERROR]';
case E_COMPILE_ERROR:
return '[PHP COMPILE ERROR]';
case E_USER_ERROR:
return '[ManiaControl ERROR]';
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case E_USER_WARNING:
return '[ManiaControl WARNING]';
case E_USER_NOTICE:
return '[ManiaControl NOTICE]';
case E_RECOVERABLE_ERROR:
return '[PHP RECOVERABLE ERROR]';
case self::MC_DEBUG_NOTICE:
return '[ManiaControl DEBUG]';
}
return "[PHP ERROR '{$errorLevel}']";
}
/**
* Check if the given Error Number is a User Error
*
* @param int $errorNumber
* @return bool
*/
private static function isUserErrorNumber($errorNumber) {
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return ($errorNumber & E_USER_ERROR || $errorNumber & E_USER_WARNING || $errorNumber & E_USER_NOTICE
|| $errorNumber & E_USER_DEPRECATED);
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}
/**
* Test whether the given Error Number represents a Fatal Error
*
* @param int $errorNumber
* @return bool
*/
public static function isFatalError($errorNumber) {
$fatalError = (E_ERROR | E_PARSE | E_CORE_ERROR | E_COMPILE_ERROR | E_USER_ERROR | E_RECOVERABLE_ERROR);
return ($errorNumber & $fatalError);
}
/**
* Parse the Debug Backtrace into a String for the Error Report
*
* @param array $backtrace
* @param string $sourceClass
* @return string
*/
private function parseBackTrace(array $backtrace, &$sourceClass = null) {
$traceString = '';
$stepCount = 0;
foreach ($backtrace as $traceStep) {
$skipStep = $this->shouldSkipTraceStep($traceStep);
$traceString .= '#' . $stepCount . ': ';
if (isset($traceStep['class'])) {
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if (!$sourceClass && !$skipStep && !$this->isIgnoredSourceClass($traceStep['class'])) {
$sourceClass = $traceStep['class'];
}
$traceString .= $traceStep['class'];
}
if (isset($traceStep['type'])) {
$traceString .= $traceStep['type'];
}
if (isset($traceStep['function'])) {
$traceString .= $traceStep['function'] . '(';
if (isset($traceStep['args']) && !$skipStep) {
$traceString .= $this->parseArgumentsArray($traceStep['args']);
}
$traceString .= ')';
}
if (isset($traceStep['file']) && !$skipStep) {
$traceString .= ' in File ';
$traceString .= self::stripBaseDir($traceStep['file']);
}
if (isset($traceStep['line']) && !$skipStep) {
$traceString .= ' on Line ';
$traceString .= $traceStep['line'];
}
$traceString .= PHP_EOL;
if (strlen($traceString) > 2500) {
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// Too long...
$traceString .= '...';
break;
}
$stepCount++;
}
return $traceString;
}
/**
* Check if the given Trace Step should be skipped
*
* @param array $traceStep
* @return bool
*/
private function shouldSkipTraceStep(array $traceStep) {
if (isset($traceStep['class'])) {
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$skippedClasses = array('Symfony\\Component\\EventDispatcher\\EventDispatcher', 'cURL\\Request');
foreach ($skippedClasses as $skippedClass) {
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if ($traceStep['class'] === $skippedClass) {
return true;
}
}
}
if (isset($traceStep['file'])) {
$skippedFiles = array('Symfony', 'curl-easy');
foreach ($skippedFiles as $skippedFile) {
if (strpos($traceStep['file'], $skippedFile)) {
return true;
}
}
}
return false;
}
/**
* Check if the given Class Name should be ignored as possible Error Source Class
*
* @param string $class
* @return bool
*/
private function isIgnoredSourceClass($class) {
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$ignoredClasses = array('Maniaplanet\\', '\\ErrorHandler');
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foreach ($ignoredClasses as $ignoredClass) {
if (strpos($class, $ignoredClass) !== false) {
return true;
}
}
return false;
}
/**
* Build a string from an arguments array
*
* @param array $args
* @return string
*/
private function parseArgumentsArray(array $args) {
$string = '';
$argsCount = count($args);
foreach ($args as $index => $arg) {
if (is_object($arg)) {
$string .= 'object(' . get_class($arg) . ')';
} else if (is_array($arg)) {
$string .= 'array(' . $this->parseArgumentsArray($arg) . ')';
} else {
$type = gettype($arg);
$string .= $type . '(';
if (is_string($arg)) {
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$param = $arg;
if (strlen($param) > 40) {
$param = substr($param, 0, 40) . '..';
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}
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$string .= print_r($param, true);
} else {
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$string .= print_r($arg, true);
}
$string .= ')';
}
if ($index < $argsCount - 1) {
$string .= ', ';
}
if (strlen($string) > 150) {
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// Too long...
$string .= '...';
break;
}
}
return $string;
}
/**
* Strip the ManiaControl path from the given path to ensure privacy
*
* @param string $path
* @return string
*/
private static function stripBaseDir($path) {
return str_replace(MANIACONTROL_PATH, '', $path);
}
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/**
* Get the source class via the error file
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*
* @param string $errorFile
* @return string
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*/
private function getSourceClass($errorFile) {
if (!$errorFile) {
return null;
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}
$filePath = substr($errorFile, strlen(MANIACONTROL_PATH));
$filePath = str_replace('plugins' . DIRECTORY_SEPARATOR, '', $filePath);
$filePath = str_replace('core' . DIRECTORY_SEPARATOR, 'ManiaControl\\', $filePath);
$className = str_replace('.php', '', $filePath);
$className = str_replace(DIRECTORY_SEPARATOR, '\\', $className);
if (!class_exists($className, false)) {
return null;
}
return $className;
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}
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/**
* Handle PHP Process Shutdown
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*/
public function handleShutdown() {
// TODO: skip client-related actions on transport exception (e.g. server down)
if ($this->maniaControl->getCallbackManager()) {
// OnShutdown callback
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$this->maniaControl->getCallbackManager()->triggerCallback(Callbacks::ONSHUTDOWN);
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}
if ($this->maniaControl->getChat()) {
// Announce quit
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$this->maniaControl->getChat()->sendInformation('ManiaControl shutting down.');
}
if ($this->maniaControl->getClient()) {
try {
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$this->maniaControl->getClient()->sendHideManialinkPage();
} catch (TransportException $e) {
$this->handleException($e, false);
}
}
// Check if the Shutdown was caused by a Fatal Error and report it
$error = error_get_last();
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if ($error && self::isFatalError($error['type'])) {
$this->handleError($error['type'], $error['message'], $error['file'], $error['line'], array(), true);
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}
$this->maniaControl->quit('Quitting ManiaControl!');
}
/**
* ManiaControl Exception Handler
*
* @param \Exception $exception
* @param bool $shutdown
*/
public function handleException(\Exception $exception, $shutdown = true) {
$message = "[ManiaControl EXCEPTION]: {$exception->getMessage()}";
$exceptionClass = get_class($exception);
$sourceClass = null;
$traceString = $this->parseBackTrace($exception->getTrace(), $sourceClass);
$logMessage = $message . PHP_EOL . 'Class: ' . $exceptionClass . PHP_EOL . 'Trace:' . PHP_EOL . $traceString;
Logger::log($logMessage);
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if (!DEV_MODE) {
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$report = array();
$report['Type'] = 'Exception';
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$report['Message'] = $message;
$report['Class'] = $exceptionClass;
$report['FileLine'] = self::stripBaseDir($exception->getFile()) . ': ' . $exception->getLine();
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$report['SourceClass'] = $sourceClass;
$report['PluginId'] = PluginManager::getPluginId($sourceClass);
$report['Backtrace'] = $traceString;
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$report['OperatingSystem'] = php_uname();
$report['PHPVersion'] = phpversion();
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if ($this->maniaControl->getServer()) {
$report['ServerLogin'] = $this->maniaControl->getServer()->login;
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}
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if ($this->maniaControl->getSettingManager() && $this->maniaControl->getUpdateManager()) {
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$report['UpdateChannel'] = $this->maniaControl->getSettingManager()->getSettingValue($this->maniaControl->getUpdateManager(), UpdateManager::SETTING_UPDATECHECK_CHANNEL);
$report['ManiaControlVersion'] = ManiaControl::VERSION . ' #' . $this->maniaControl->getUpdateManager()->getNightlyBuildDate();
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} else {
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$report['ManiaControlVersion'] = ManiaControl::VERSION;
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}
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$errorReport = json_encode(Formatter::utf8($report));
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$url = ManiaControl::URL_WEBSERVICE . 'errorreport';
$response = WebReader::postUrl($url, $errorReport);
$content = $response->getContent();
$success = json_decode($content);
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if ($success) {
Logger::log('Exception successfully reported!');
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} else {
Logger::log('Exception-Report failed! ' . print_r($content, true));
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}
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}
if ($shutdown) {
if ($this->shouldRestart()) {
$this->maniaControl->restart();
}
$this->maniaControl->quit('Quitting ManiaControl after Exception.');
}
}
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/**
* Test if ManiaControl should restart automatically
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*
* @return bool
*/
private function shouldRestart() {
if (!$this->maniaControl || !$this->maniaControl->getSettingManager() || DEV_MODE) {
return false;
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}
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$setting = $this->maniaControl->getSettingManager()->getSettingValue($this, self::SETTING_RESTART_ON_EXCEPTION, true);
return $setting;
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}
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}