ErrorHandler.php — Matomo Analytics – Powerful, Privacy-First Insights for WordPress 4.0.2

matomo / app / core / ErrorHandler.php

matomo / app / core Last commit date

API 5 years ago Access 5 years ago Application 5 years ago Archive 5 years ago ArchiveProcessor 5 years ago Archiver 5 years ago AssetManager 5 years ago Auth 5 years ago Category 5 years ago CliMulti 5 years ago Columns 5 years ago Composer 5 years ago Concurrency 5 years ago Config 5 years ago Container 5 years ago CronArchive 5 years ago DataAccess 5 years ago DataFiles 5 years ago DataTable 5 years ago Db 5 years ago DeviceDetector 5 years ago Email 5 years ago Exception 5 years ago Http 5 years ago Intl 5 years ago Mail 5 years ago Measurable 5 years ago Menu 5 years ago Metrics 5 years ago Notification 5 years ago Period 5 years ago Plugin 5 years ago ProfessionalServices 5 years ago Report 5 years ago ReportRenderer 5 years ago Scheduler 5 years ago Segment 5 years ago Session 5 years ago Settings 5 years ago Tracker 5 years ago Translation 5 years ago UpdateCheck 5 years ago Updater 5 years ago Updates 5 years ago Validators 5 years ago View 5 years ago ViewDataTable 5 years ago Visualization 5 years ago Widget 5 years ago .htaccess 6 years ago Access.php 5 years ago Archive.php 5 years ago ArchiveProcessor.php 5 years ago AssetManager.php 5 years ago Auth.php 5 years ago AuthResult.php 5 years ago BaseFactory.php 5 years ago Cache.php 5 years ago CacheId.php 5 years ago CliMulti.php 5 years ago Common.php 5 years ago Config.php 5 years ago Console.php 5 years ago Context.php 5 years ago Cookie.php 5 years ago CronArchive.php 5 years ago DataArray.php 5 years ago DataTable.php 5 years ago Date.php 5 years ago Db.php 5 years ago DbHelper.php 5 years ago Development.php 5 years ago ErrorHandler.php 5 years ago EventDispatcher.php 5 years ago ExceptionHandler.php 5 years ago FileIntegrity.php 5 years ago Filechecks.php 5 years ago Filesystem.php 5 years ago FrontController.php 5 years ago Http.php 5 years ago IP.php 5 years ago Log.php 5 years ago LogDeleter.php 5 years ago Mail.php 5 years ago Metrics.php 5 years ago NoAccessException.php 5 years ago Nonce.php 5 years ago Notification.php 5 years ago NumberFormatter.php 5 years ago Option.php 5 years ago Period.php 5 years ago Piwik.php 5 years ago Plugin.php 5 years ago Profiler.php 5 years ago ProxyHeaders.php 5 years ago ProxyHttp.php 5 years ago QuickForm2.php 5 years ago RankingQuery.php 5 years ago ReportRenderer.php 5 years ago Segment.php 5 years ago Sequence.php 5 years ago Session.php 5 years ago SettingsPiwik.php 5 years ago SettingsServer.php 5 years ago Singleton.php 5 years ago Site.php 5 years ago TCPDF.php 5 years ago Theme.php 5 years ago Timer.php 5 years ago Tracker.php 5 years ago Twig.php 5 years ago Unzip.php 5 years ago UpdateCheck.php 5 years ago Updater.php 5 years ago UpdaterErrorException.php 5 years ago Updates.php 5 years ago Url.php 5 years ago UrlHelper.php 5 years ago Version.php 5 years ago View.php 5 years ago bootstrap.php 5 years ago dispatch.php 5 years ago testMinimumPhpVersion.php 5 years ago

ErrorHandler.php

205 lines

1	<?php
2	/**
3	* Matomo - free/libre analytics platform
4	*
5	* @link https://matomo.org
6	* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
7	*/
8
9	namespace Piwik;
10
11	use Piwik\Container\StaticContainer;
12	use Piwik\Exception\ErrorException;
13	use Psr\Log\LoggerInterface;
14
15	/**
16	* Piwik's error handler function.
17	*/
18	class ErrorHandler
19	{
20	private static $fatalErrorStackTrace = [];
21
22	/**
23	* Fatal errors in PHP do not leave behind backtraces, which can make it impossible to determine
24	* the exact cause of one. We can, however, save a partial stack trace by remembering certain execution
25	* points. This method and popFatalErrorBreadcrumb() are used for that purpose.
26	*
27	* To use this method, surround a function call w/ pushFatalErrorBreadcrumb() & popFatalErrorBreadcrumb()
28	* like so:
29	*
30	* public function theMethodIWantToAppearInFatalErrorStackTraces()
31	* {
32	* try {
33	* ErrorHandler::pushFatalErrorBreadcrumb(static::class);
34	*
35	* // ...
36	* } finally {
37	* ErrorHandler::popFatalErrorBreadcrumb();
38	* }
39	* }
40	*
41	* If a fatal error occurs, theMethodIWantToAppearInFatalErrorStackTraces will appear in the stack trace,
42	* if PIWIK_PRINT_ERROR_BACKTRACE is true.
43	*/
44	public static function pushFatalErrorBreadcrumb($className = null, $importantArgs = null)
45	{
46	$backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, $limit = 2);
47	$backtrace[1]['class'] = $className; // knowing the derived class name is far more useful
48	$backtrace[1]['args'] = empty($importantArgs) ? [] : array_map('json_encode', $importantArgs);
49	array_unshift(self::$fatalErrorStackTrace, $backtrace[1]);
50	}
51
52	public static function popFatalErrorBreadcrumb()
53	{
54	array_shift(self::$fatalErrorStackTrace);
55	}
56
57	public static function getFatalErrorPartialBacktrace()
58	{
59	$result = '';
60	foreach (self::$fatalErrorStackTrace as $index => $entry) {
61	$function = $entry['function'];
62	if (!empty($entry['class'])) {
63	$function = $entry['class'] . $entry['type'] . $function;
64	}
65
66	$args = '';
67	if (!empty($entry['args'])) {
68	$isFirst = true;
69	foreach ($entry['args'] as $name => $value) {
70	if ($isFirst) {
71	$isFirst = false;
72	} else {
73	$args .= ', ';
74	}
75	$args .= $name . '=' . $value;
76	}
77	}
78
79	$result .= sprintf("#%s %s(%s): %s(%s)\n", $index, $entry['file'], $entry['line'], $function, $args);
80	}
81	return $result;
82	}
83
84	/**
85	* Returns a string description of a PHP error number.
86	*
87	* @param int $errno `E_ERROR`, `E_WARNING`, `E_PARSE`, etc.
88	* @return string
89	*/
90	public static function getErrNoString($errno)
91	{
92	switch ($errno) {
93	case E_ERROR:
94	return "Error";
95	case E_WARNING:
96	return "Warning";
97	case E_PARSE:
98	return "Parse Error";
99	case E_NOTICE:
100	return "Notice";
101	case E_CORE_ERROR:
102	return "Core Error";
103	case E_CORE_WARNING:
104	return "Core Warning";
105	case E_COMPILE_ERROR:
106	return "Compile Error";
107	case E_COMPILE_WARNING:
108	return "Compile Warning";
109	case E_USER_ERROR:
110	return "User Error";
111	case E_USER_WARNING:
112	return "User Warning";
113	case E_USER_NOTICE:
114	return "User Notice";
115	case E_STRICT:
116	return "Strict Notice";
117	case E_RECOVERABLE_ERROR:
118	return "Recoverable Error";
119	case E_DEPRECATED:
120	return "Deprecated";
121	case E_USER_DEPRECATED:
122	return "User Deprecated";
123	default:
124	return "Unknown error ($errno)";
125	}
126	}
127
128	public static function registerErrorHandler()
129	{
130	set_error_handler(array('Piwik\ErrorHandler', 'errorHandler'));
131	}
132
133	public static function errorHandler($errno, $errstr, $errfile, $errline)
134	{
135	// if the error has been suppressed by the @ we don't handle the error
136	if (!(error_reporting() & $errno)) {
137	return;
138	}
139
140	switch ($errno) {
141	case E_ERROR:
142	case E_PARSE:
143	case E_CORE_ERROR:
144	case E_CORE_WARNING:
145	case E_COMPILE_ERROR:
146	case E_COMPILE_WARNING:
147	case E_USER_ERROR:
148	Common::sendResponseCode(500);
149	// Convert the error to an exception with an HTML message
150	$e = new \Exception();
151	$backtrace = \Piwik_ShouldPrintBackTraceWithMessage() ? $e->getTraceAsString() : '';
152	$message = self::getHtmlMessage($errno, $errstr, $errfile, $errline, $backtrace);
153	throw new ErrorException($message, 0, $errno, $errfile, $errline);
154	case E_WARNING:
155	case E_NOTICE:
156	case E_USER_WARNING:
157	case E_USER_NOTICE:
158	case E_STRICT:
159	case E_RECOVERABLE_ERROR:
160	case E_DEPRECATED:
161	case E_USER_DEPRECATED:
162	default:
163	$context = array('trace' => debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 15));
164	try {
165	StaticContainer::get(LoggerInterface::class)->warning(
166	self::createLogMessage($errno, $errstr, $errfile, $errline),
167	$context
168	);
169	} catch (\Exception $ex) {
170	// ignore (it's possible for this to happen if the StaticContainer hasn't been created yet)
171	}
172
173	break;
174	}
175	}
176
177	private static function createLogMessage($errno, $errstr, $errfile, $errline)
178	{
179	return sprintf(
180	"%s(%d): %s - %s - Matomo " . (class_exists('Piwik\Version') ? 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)",
181	$errfile,
182	$errline,
183	ErrorHandler::getErrNoString($errno),
184	$errstr
185	);
186	}
187
188	private static function getHtmlMessage($errno, $errstr, $errfile, $errline, $trace)
189	{
190	$trace = Log::$debugBacktraceForTests ?: $trace;
191
192	$message = ErrorHandler::getErrNoString($errno) . ' - ' . $errstr;
193
194	$html = "<p>There is an error. Please report the message (Matomo " . (class_exists('Piwik\Version') ? Version::VERSION : '') . ")
195	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>";
196	$html .= "<p><strong>{$message}</strong> in <em>{$errfile}</em>";
197	$html .= " on line {$errline}</p>";
198	$html .= "Backtrace:<pre>";
199	$html .= str_replace("\n", "\n", $trace);
200	$html .= "</pre>";
201
202	return $html;
203	}
204	}
205