Response.php — Matomo Analytics – Powerful, Privacy-First Insights for WordPress 1.3.1

matomo / app / core / Tracker / Response.php

matomo / app / core / Tracker Last commit date

Db 6 years ago Handler 6 years ago TableLogAction 6 years ago Visit 6 years ago Action.php 6 years ago ActionPageview.php 6 years ago Cache.php 6 years ago Db.php 6 years ago Failures.php 6 years ago FingerprintSalt.php 6 years ago GoalManager.php 6 years ago Handler.php 6 years ago IgnoreCookie.php 6 years ago LogTable.php 6 years ago Model.php 6 years ago PageUrl.php 6 years ago Request.php 5 years ago RequestProcessor.php 6 years ago RequestSet.php 6 years ago Response.php 6 years ago ScheduledTasksRunner.php 6 years ago Settings.php 5 years ago TableLogAction.php 6 years ago TrackerCodeGenerator.php 6 years ago TrackerConfig.php 6 years ago Visit.php 5 years ago VisitExcluded.php 6 years ago VisitInterface.php 6 years ago Visitor.php 6 years ago VisitorNotFoundInDb.php 6 years ago VisitorRecognizer.php 6 years ago

Response.php

189 lines

1	<?php
2	/**
3	* Piwik - 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\Tracker;
10
11	use Exception;
12	use Piwik\Common;
13	use Piwik\Profiler;
14	use Piwik\Timer;
15	use Piwik\Tracker;
16	use Piwik\Tracker\Db as TrackerDb;
17
18	class Response
19	{
20	private $timer;
21
22	private $content;
23
24	public function init(Tracker $tracker)
25	{
26	ob_start(); // we use ob_start only because of Common::printDebug, we should actually not really use ob_start
27
28	if ($tracker->isDebugModeEnabled() && TrackerConfig::getConfigValue('enable_sql_profiler')) {
29	$this->timer = new Timer();
30
31	TrackerDb::enableProfiling();
32	}
33	}
34
35	public function getOutput()
36	{
37	$this->outputAccessControlHeaders();
38
39	if (is_null($this->content) && ob_get_level() > 0) {
40	$this->content = ob_get_clean();
41	}
42
43	return $this->content;
44	}
45
46	/**
47	* Echos an error message & other information, then exits.
48	*
49	* @param Tracker $tracker
50	* @param Exception $e
51	* @param int $statusCode eg 500
52	*/
53	public function outputException(Tracker $tracker, Exception $e, $statusCode)
54	{
55	Common::sendResponseCode($statusCode);
56	$this->logExceptionToErrorLog($e);
57
58	if ($tracker->isDebugModeEnabled()) {
59	Common::sendHeader('Content-Type: text/html; charset=utf-8');
60	$trailer = '<span style="color: #888888">Backtrace:<br /><pre>' . $e->getTraceAsString() . '</pre></span>';
61	$headerPage = file_get_contents(PIWIK_INCLUDE_PATH . '/plugins/Morpheus/templates/simpleLayoutHeader.tpl');
62	$footerPage = file_get_contents(PIWIK_INCLUDE_PATH . '/plugins/Morpheus/templates/simpleLayoutFooter.tpl');
63	$headerPage = str_replace('{$HTML_TITLE}', 'Matomo &rsaquo; Error', $headerPage);
64
65	echo $headerPage . '<p>' . $this->getMessageFromException($e) . '</p>' . $trailer . $footerPage;
66	} else {
67	$this->outputApiResponse($tracker);
68	}
69	}
70
71	public function outputResponse(Tracker $tracker)
72	{
73	if (!$tracker->shouldRecordStatistics()) {
74	Common::sendResponseCode(503);
75	$this->outputApiResponse($tracker);
76	Common::printDebug("Logging disabled, display transparent logo");
77	} elseif (!$tracker->hasLoggedRequests()) {
78	if (!$this->isHttpGetRequest() \|\| !empty($_GET) \|\| !empty($_POST)) {
79	Common::sendResponseCode(400);
80	}
81	Common::printDebug("Empty request => Matomo page");
82	echo "This resource is part of Matomo. Keep full control of your data with the leading free and open source <a href='https://matomo.org' target='_blank' rel='noopener noreferrer nofollow'>web analytics & conversion optimisation platform</a>.";
83	} else {
84	$this->outputApiResponse($tracker);
85	Common::printDebug("Nothing to notice => default behaviour");
86	}
87
88	Common::printDebug("End of the page.");
89
90	if ($tracker->isDebugModeEnabled()
91	&& $tracker->isDatabaseConnected()
92	&& TrackerDb::isProfilingEnabled()
93	) {
94	$db = Tracker::getDatabase();
95	$db->recordProfiling();
96	Profiler::displayDbTrackerProfile($db);
97	}
98
99	if ($tracker->isDebugModeEnabled()) {
100	Common::printDebug($_COOKIE);
101	Common::printDebug((string)$this->timer);
102	}
103	}
104
105	private function outputAccessControlHeaders()
106	{
107	if (!$this->isHttpGetRequest()) {
108	$origin = isset($_SERVER['HTTP_ORIGIN']) ? $_SERVER['HTTP_ORIGIN'] : '*';
109	Common::sendHeader('Access-Control-Allow-Origin: ' . $origin);
110	Common::sendHeader('Access-Control-Allow-Credentials: true');
111	}
112	}
113
114	private function isHttpGetRequest()
115	{
116	$requestMethod = isset($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : 'GET';
117
118	return strtoupper($requestMethod) === 'GET';
119	}
120
121	private function getOutputBuffer()
122	{
123	return ob_get_contents();
124	}
125
126	protected function hasAlreadyPrintedOutput()
127	{
128	return strlen($this->getOutputBuffer()) > 0;
129	}
130
131	private function outputApiResponse(Tracker $tracker)
132	{
133	if ($tracker->isDebugModeEnabled()) {
134	return;
135	}
136
137	if ($this->hasAlreadyPrintedOutput()) {
138	return;
139	}
140
141	$request = $_GET + $_POST;
142
143	if ($this->isHttpGetRequest()) {
144	Common::sendHeader('Cache-Control: no-store');
145	}
146
147	if (array_key_exists('send_image', $request) && $request['send_image'] === '0') {
148	Common::sendResponseCode(204);
149	return;
150	}
151
152	$this->outputTransparentGif();
153	}
154
155	private function outputTransparentGif()
156	{
157	$transGifBase64 = "R0lGODlhAQABAIAAAAAAAAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==";
158	Common::sendHeader('Content-Type: image/gif');
159
160	echo base64_decode($transGifBase64);
161	}
162
163	/**
164	* Gets the error message to output when a tracking request fails.
165	*
166	* @param Exception $e
167	* @return string
168	*/
169	protected function getMessageFromException($e)
170	{
171	// Note: duplicated from FormDatabaseSetup.isAccessDenied
172	// Avoid leaking the username/db name when access denied
173	if ($e->getCode() == 1044 \|\| $e->getCode() == 42000) {
174	return "Error while connecting to the Matomo database - please check your credentials in config/config.ini.php file";
175	}
176
177	if (Common::isPhpCliMode()) {
178	return $e->getMessage() . "\n" . $e->getTraceAsString();
179	}
180
181	return $e->getMessage();
182	}
183
184	protected function logExceptionToErrorLog($e)
185	{
186	error_log(sprintf("Error in Matomo (tracker): %s", str_replace("\n", " ", $this->getMessageFromException($e))));
187	}
188	}
189