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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare
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| Current Path : /var/www/web28/html/wp-content/plugins/matomo/app/core/ |
| Current File : //var/www/web28/html/wp-content/plugins/matomo/app/core/ErrorHandler.php |
<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.org
* @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Piwik;
use Piwik\Container\StaticContainer;
use Piwik\Exception\ErrorException;
use Piwik\Log\LoggerInterface;
/**
* Piwik's error handler function.
*/
class ErrorHandler
{
private static $fatalErrorStackTrace = [];
private static $lastError = '';
/**
* Fatal errors in PHP do not leave behind backtraces, which can make it impossible to determine
* the exact cause of one. We can, however, save a partial stack trace by remembering certain execution
* points. This method and popFatalErrorBreadcrumb() are used for that purpose.
*
* To use this method, surround a function call w/ pushFatalErrorBreadcrumb() & popFatalErrorBreadcrumb()
* like so:
*
* public function theMethodIWantToAppearInFatalErrorStackTraces()
* {
* try {
* ErrorHandler::pushFatalErrorBreadcrumb(static::class);
*
* // ...
* } finally {
* ErrorHandler::popFatalErrorBreadcrumb();
* }
* }
*
* If a fatal error occurs, theMethodIWantToAppearInFatalErrorStackTraces will appear in the stack trace,
* if PIWIK_PRINT_ERROR_BACKTRACE is true.
*/
public static function pushFatalErrorBreadcrumb($className = null, $importantArgs = null)
{
$backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, $limit = 2);
$backtrace[1]['class'] = $className;
// knowing the derived class name is far more useful
$backtrace[1]['args'] = empty($importantArgs) ? [] : array_map('json_encode', $importantArgs);
array_unshift(self::$fatalErrorStackTrace, $backtrace[1]);
}
public static function popFatalErrorBreadcrumb()
{
array_shift(self::$fatalErrorStackTrace);
}
public static function getFatalErrorPartialBacktrace()
{
$result = '';
foreach (self::$fatalErrorStackTrace as $index => $entry) {
$function = $entry['function'];
if (!empty($entry['class'])) {
$function = $entry['class'] . $entry['type'] . $function;
}
$args = '';
if (!empty($entry['args'])) {
$isFirst = true;
foreach ($entry['args'] as $name => $value) {
if ($isFirst) {
$isFirst = false;
} else {
$args .= ', ';
}
$args .= $name . '=' . $value;
}
}
$result .= sprintf("#%s %s(%s): %s(%s)\n", $index, $entry['file'], $entry['line'], $function, $args);
}
return $result;
}
/**
* Returns a string description of a PHP error number.
*
* @param int $errno `E_ERROR`, `E_WARNING`, `E_PARSE`, etc.
* @return string
*/
public static function getErrNoString($errno)
{
switch ($errno) {
case E_ERROR:
return "Error";
case E_WARNING:
return "Warning";
case E_PARSE:
return "Parse Error";
case E_NOTICE:
return "Notice";
case E_CORE_ERROR:
return "Core Error";
case E_CORE_WARNING:
return "Core Warning";
case E_COMPILE_ERROR:
return "Compile Error";
case E_COMPILE_WARNING:
return "Compile Warning";
case E_USER_ERROR:
return "User Error";
case E_USER_WARNING:
return "User Warning";
case E_USER_NOTICE:
return "User Notice";
case E_STRICT:
return "Strict Notice";
case E_RECOVERABLE_ERROR:
return "Recoverable Error";
case E_DEPRECATED:
return "Deprecated";
case E_USER_DEPRECATED:
return "User Deprecated";
default:
return "Unknown error ({$errno})";
}
}
public static function registerErrorHandler()
{
set_error_handler(array('Piwik\\ErrorHandler', 'errorHandler'));
}
public static function errorHandler($errno, $errstr, $errfile, $errline)
{
self::$lastError = self::createLogMessage($errno, $errstr, $errfile, $errline);
// if the error has been suppressed by the @ we don't handle the error
if (!(error_reporting() & $errno)) {
return;
}
switch ($errno) {
case E_ERROR:
case E_PARSE:
case E_CORE_ERROR:
case E_CORE_WARNING:
case E_COMPILE_ERROR:
case E_COMPILE_WARNING:
case E_USER_ERROR:
\Piwik\Common::sendResponseCode(500);
// Convert the error to an exception with an HTML message
$e = new \Exception();
$backtrace = \Piwik_ShouldPrintBackTraceWithMessage() ? $e->getTraceAsString() : '';
$message = self::getHtmlMessage($errno, $errstr, $errfile, $errline, $backtrace);
throw new ErrorException($message, 0, $errno, $errfile, $errline);
case E_WARNING:
case E_NOTICE:
case E_USER_WARNING:
case E_USER_NOTICE:
case E_STRICT:
case E_RECOVERABLE_ERROR:
case E_DEPRECATED:
case E_USER_DEPRECATED:
default:
$context = array('trace' => debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 15));
try {
StaticContainer::get(LoggerInterface::class)->warning(self::createLogMessage($errno, $errstr, $errfile, $errline), $context);
} catch (\Exception $ex) {
// ignore (it's possible for this to happen if the StaticContainer hasn't been created yet)
}
break;
}
}
public static function getLastError()
{
$lastError = error_get_last();
if (!empty($lastError['message'])) {
return $lastError['message'];
}
return self::$lastError;
}
private static function createLogMessage($errno, $errstr, $errfile, $errline)
{
return sprintf("%s(%d): %s - %s - Matomo " . (class_exists('Piwik\\Version') ? \Piwik\Version::VERSION : '') . " - Please report this message in the Matomo forums: https://forum.matomo.org (please do a search first as it might have been reported already)", $errfile, $errline, \Piwik\ErrorHandler::getErrNoString($errno), $errstr);
}
private static function getHtmlMessage($errno, $errstr, $errfile, $errline, $trace)
{
$trace = \Piwik\Log::$debugBacktraceForTests ?: $trace;
$message = \Piwik\ErrorHandler::getErrNoString($errno) . ' - ' . $errstr;
$html = "<p>There is an error. Please report the message (Matomo " . (class_exists('Piwik\\Version') ? \Piwik\Version::VERSION : '') . ")\n and full backtrace in the <a target='_blank' rel='noreferrer noopener' href='https://forum.matomo.org'>Matomo forums</a> (please do a search first as it might have been reported already!).</p>";
$html .= "<p><strong>{$message}</strong> in <em>{$errfile}</em>";
$html .= " on line {$errline}</p>";
$html .= "Backtrace:<pre>";
$html .= str_replace("\n", "\n", $trace);
$html .= "</pre>";
return $html;
}
}
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