Config.php — Matomo Analytics – Powerful, Privacy-First Insights for WordPress 5.2.0

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Config.php

430 lines

1	<?php
2
3	/**
4	* Matomo - free/libre analytics platform
5	*
6	* @link https://matomo.org
7	* @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
8	*/
9	namespace Piwik;
10
11	use Exception;
12	use Piwik\Application\Kernel\GlobalSettingsProvider;
13	use Piwik\Container\StaticContainer;
14	use Piwik\Exception\MissingFilePermissionException;
15	use Piwik\Plugins\CoreAdminHome\Controller;
16	use Piwik\Plugins\CorePluginsAdmin\CorePluginsAdmin;
17	use Piwik\ProfessionalServices\Advertising;
18	use Piwik\Log\LoggerInterface;
19	/**
20	* Singleton that provides read & write access to Piwik's INI configuration.
21	*
22	* This class reads and writes to the `config/config.ini.php` file. If config
23	* options are missing from that file, this class will look for their default
24	* values in `config/global.ini.php`.
25	*
26	* ### Examples
27	*
28	* Getting a value:
29	*
30	* // read the minimum_memory_limit option under the [General] section
31	* $minValue = Config::getInstance()->General['minimum_memory_limit'];
32	*
33	* Setting a value:
34	*
35	* // set the minimum_memory_limit option
36	* Config::getInstance()->General['minimum_memory_limit'] = 256;
37	* Config::getInstance()->forceSave();
38	*
39	* Setting an entire section:
40	*
41	* Config::getInstance()->MySection = array('myoption' => 1);
42	* Config::getInstance()->forceSave();
43	*/
44	class Config
45	{
46	public const DEFAULT_LOCAL_CONFIG_PATH = '/config/config.ini.php';
47	public const DEFAULT_COMMON_CONFIG_PATH = '/config/common.config.ini.php';
48	public const DEFAULT_GLOBAL_CONFIG_PATH = '/config/global.ini.php';
49	/**
50	* @var boolean
51	*/
52	protected $doNotWriteConfigInTests = \false;
53	/**
54	* @var GlobalSettingsProvider
55	*/
56	protected $settings;
57	/**
58	* @return Config
59	*/
60	public static function getInstance()
61	{
62	return StaticContainer::get('Piwik\\Config');
63	}
64	public function __construct(GlobalSettingsProvider $settings)
65	{
66	$this->settings = $settings;
67	}
68	/**
69	* Returns the path to the local config file used by this instance.
70	*
71	* @return string
72	*/
73	public function getLocalPath()
74	{
75	return $this->settings->getPathLocal();
76	}
77	/**
78	* Returns the path to the global config file used by this instance.
79	*
80	* @return string
81	*/
82	public function getGlobalPath()
83	{
84	return $this->settings->getPathGlobal();
85	}
86	/**
87	* Returns the path to the common config file used by this instance.
88	*
89	* @return string
90	*/
91	public function getCommonPath()
92	{
93	return $this->settings->getPathCommon();
94	}
95	/**
96	* Returns absolute path to the global configuration file
97	*
98	* @return string
99	*/
100	public static function getGlobalConfigPath()
101	{
102	return PIWIK_DOCUMENT_ROOT . self::DEFAULT_GLOBAL_CONFIG_PATH;
103	}
104	/**
105	* Returns absolute path to the common configuration file.
106	*
107	* @return string
108	*/
109	public static function getCommonConfigPath()
110	{
111	return PIWIK_USER_PATH . self::DEFAULT_COMMON_CONFIG_PATH;
112	}
113	/**
114	* Returns default absolute path to the local configuration file.
115	*
116	* @return string
117	*/
118	public static function getDefaultLocalConfigPath()
119	{
120	return PIWIK_USER_PATH . self::DEFAULT_LOCAL_CONFIG_PATH;
121	}
122	/**
123	* Returns absolute path to the local configuration file
124	*
125	* @return string
126	*/
127	public static function getLocalConfigPath()
128	{
129	if (!empty($GLOBALS['CONFIG_INI_PATH_RESOLVER']) && is_callable($GLOBALS['CONFIG_INI_PATH_RESOLVER'])) {
130	return call_user_func($GLOBALS['CONFIG_INI_PATH_RESOLVER']);
131	}
132	$path = self::getByDomainConfigPath();
133	if ($path) {
134	return $path;
135	}
136	return self::getDefaultLocalConfigPath();
137	}
138	private static function getLocalConfigInfoForHostname($hostname)
139	{
140	if (!$hostname) {
141	return array();
142	}
143	// Remove any port number to get actual hostname
144	$hostname = \Piwik\Url::getHostSanitized($hostname);
145	$standardConfigName = 'config.ini.php';
146	$perHostFilename = $hostname . '.' . $standardConfigName;
147	$pathDomainConfig = PIWIK_USER_PATH . '/config/' . $perHostFilename;
148	$pathDomainMiscUser = PIWIK_USER_PATH . '/misc/user/' . $hostname . '/' . $standardConfigName;
149	$locations = array(array('file' => $perHostFilename, 'path' => $pathDomainConfig), array('file' => $standardConfigName, 'path' => $pathDomainMiscUser));
150	return $locations;
151	}
152	public function getConfigHostnameIfSet()
153	{
154	if ($this->getByDomainConfigPath() === \false) {
155	return \false;
156	}
157	return $this->getHostname();
158	}
159	public function getClientSideOptions()
160	{
161	$general = $this->General;
162	return array('action_url_category_delimiter' => $general['action_url_category_delimiter'], 'action_title_category_delimiter' => $general['action_title_category_delimiter'], 'are_ads_enabled' => Advertising::isAdsEnabledInConfig($general), 'autocomplete_min_sites' => $general['autocomplete_min_sites'], 'datatable_export_range_as_day' => $general['datatable_export_range_as_day'], 'datatable_row_limits' => $this->getDatatableRowLimits(), 'enable_general_settings_admin' => Controller::isGeneralSettingsAdminEnabled(), 'enable_plugins_admin' => CorePluginsAdmin::isPluginsAdminEnabled());
163	}
164	/**
165	* @param $general
166	* @return mixed
167	*/
168	private function getDatatableRowLimits()
169	{
170	$limits = $this->General['datatable_row_limits'];
171	$limits = explode(",", $limits);
172	$limits = array_map('trim', $limits);
173	return $limits;
174	}
175	public static function getByDomainConfigPath()
176	{
177	$host = self::getHostname();
178	$hostConfigs = self::getLocalConfigInfoForHostname($host);
179	foreach ($hostConfigs as $hostConfig) {
180	if (\Piwik\Filesystem::isValidFilename($hostConfig['file']) && file_exists($hostConfig['path'])) {
181	return $hostConfig['path'];
182	}
183	}
184	return \false;
185	}
186	/**
187	* Returns the hostname of the current request (without port number)
188	* @param bool $checkIfTrusted Check trusted requires config which is maybe not ready yet,
189	* make sure the config is ready when you call with true
190	*
191	* @return string
192	*/
193	public static function getHostname($checkIfTrusted = \false)
194	{
195	$host = \Piwik\Url::getHost($checkIfTrusted);
196	// Remove any port number to get actual hostname
197	$host = \Piwik\Url::getHostSanitized($host);
198	return $host;
199	}
200	/**
201	* If set, Piwik will use the hostname config no matter if it exists or not. Useful for instance if you want to
202	* create a new hostname config:
203	*
204	* $config = Config::getInstance();
205	* $config->forceUsageOfHostnameConfig('piwik.example.com');
206	* $config->save();
207	*
208	* @param string $hostname eg piwik.example.com
209	* @param string $preferredPath If there are different paths for the config that can be used, eg /config/* and /misc/user/*,
210	* and a preferred path is given, then the config path must contain the preferred path.
211	* @return string
212	* @throws \Exception In case the domain contains not allowed characters
213	* @internal
214	*/
215	public function forceUsageOfLocalHostnameConfig($hostname, $preferredPath = null)
216	{
217	$hostConfigs = self::getLocalConfigInfoForHostname($hostname);
218	$fileNames = '';
219	foreach ($hostConfigs as $hostConfig) {
220	if (count($hostConfigs) > 1 && $preferredPath && strpos($hostConfig['path'], $preferredPath) === \false) {
221	continue;
222	}
223	$filename = $hostConfig['file'];
224	$fileNames .= $filename . ' ';
225	if (\Piwik\Filesystem::isValidFilename($filename)) {
226	$pathLocal = $hostConfig['path'];
227	try {
228	$this->reload($pathLocal);
229	} catch (Exception $ex) {
230	// pass (not required for local file to exist at this point)
231	}
232	return $pathLocal;
233	}
234	}
235	throw new Exception('Matomo domain is not a valid looking hostname (' . trim($fileNames) . ').');
236	}
237	/**
238	* Returns `true` if the local configuration file is writable.
239	*
240	* @return bool
241	*/
242	public function isFileWritable()
243	{
244	return is_writable($this->settings->getPathLocal());
245	}
246	/**
247	* Reloads config data from disk.
248	*
249	* @throws \Exception if the global config file is not found and this is a tracker request, or
250	* if the local config file is not found and this is NOT a tracker request.
251	*/
252	protected function reload($pathLocal = null, $pathGlobal = null, $pathCommon = null)
253	{
254	$this->settings->reload($pathGlobal, $pathLocal, $pathCommon);
255	}
256	public function existsLocalConfig()
257	{
258	return is_readable($this->getLocalPath());
259	}
260	public function deleteLocalConfig()
261	{
262	$configLocal = $this->getLocalPath();
263	if (file_exists($configLocal)) {
264	@unlink($configLocal);
265	}
266	}
267	/**
268	* Returns a configuration value or section by name.
269	*
270	* @param string $name The value or section name.
271	* @return string\|array The requested value requested. Returned by reference.
272	* @throws Exception If the value requested not found in either `config.ini.php` or
273	* `global.ini.php`.
274	* @api
275	*/
276	public function &__get($name)
277	{
278	$section =& $this->settings->getIniFileChain()->get($name);
279	return $section;
280	}
281	/**
282	* @api
283	*/
284	public function getFromGlobalConfig($name)
285	{
286	return $this->settings->getIniFileChain()->getFrom($this->getGlobalPath(), $name);
287	}
288	/**
289	* @api
290	*/
291	public function getFromCommonConfig($name)
292	{
293	return $this->settings->getIniFileChain()->getFrom($this->getCommonPath(), $name);
294	}
295	/**
296	* @api
297	*/
298	public function getFromLocalConfig($name)
299	{
300	return $this->settings->getIniFileChain()->getFrom($this->getLocalPath(), $name);
301	}
302	/**
303	* Sets a configuration value or section.
304	*
305	* @param string $name This section name or value name to set.
306	* @param mixed $value
307	* @api
308	*/
309	public function __set($name, $value)
310	{
311	$this->settings->getIniFileChain()->set($name, $value);
312	}
313	/**
314	* Dump config
315	*
316	* @return string\|null
317	* @throws \Exception
318	*/
319	public function dumpConfig()
320	{
321	$chain = $this->settings->getIniFileChain();
322	$header = "; <?php exit; ?> DO NOT REMOVE THIS LINE\n";
323	$header .= "; file automatically generated or modified by Matomo; you can manually override the default values in global.ini.php by redefining them in this file.\n";
324	return $chain->dumpChanges($header);
325	}
326	/**
327	* Write user configuration file
328	*
329	* @throws \Exception if config file not writable
330	*/
331	protected function writeConfig()
332	{
333	$output = $this->dumpConfig();
334	if ($output !== null && $output !== \false) {
335	$localPath = $this->getLocalPath();
336	if ($this->doNotWriteConfigInTests) {
337	// simulate whether it would be successful
338	$success = is_writable($localPath);
339	} else {
340	$success = @file_put_contents($localPath, $output, \LOCK_EX);
341	}
342	if ($success === \false) {
343	throw $this->getConfigNotWritableException();
344	}
345	if (!$this->sanityCheck($localPath, $output)) {
346	// If sanity check fails, try to write the contents once more before logging the issue.
347	if (@file_put_contents($localPath, $output, \LOCK_EX) === \false \|\| !$this->sanityCheck($localPath, $output, \true)) {
348	StaticContainer::get(LoggerInterface::class)->info("The configuration file {$localPath} did not write correctly.");
349	}
350	}
351	$this->settings->getIniFileChain()->deleteConfigCache();
352	/**
353	* Triggered when a INI config file is changed on disk.
354	*
355	* @param string $localPath Absolute path to the changed file on the server.
356	*/
357	\Piwik\Piwik::postEvent('Core.configFileChanged', [$localPath]);
358	}
359	}
360	/**
361	* Writes the current configuration to the config.ini.php file. Only writes options whose
362	* values are different from the default.
363	*
364	* @api
365	*/
366	public function forceSave()
367	{
368	$this->writeConfig();
369	}
370	/**
371	* @throws \Exception
372	*/
373	public function getConfigNotWritableException()
374	{
375	$path = "config/" . basename($this->getLocalPath());
376	return new MissingFilePermissionException(\Piwik\Piwik::translate('General_ConfigFileIsNotWritable', array("(" . $path . ")", "")));
377	}
378	/**
379	* @throws MissingFilePermissionException If config file is not writable.
380	*/
381	public function checkConfigIsWritable()
382	{
383	if (!$this->isFileWritable()) {
384	throw $this->getConfigNotWritableException();
385	}
386	}
387	/**
388	* Convenience method for setting settings in a single section. Will set them in a new array first
389	* to be compatible with certain PHP versions.
390	*
391	* @param string $sectionName Section name.
392	* @param string $name The setting name.
393	* @param mixed $value The setting value to set.
394	*/
395	public static function setSetting($sectionName, $name, $value)
396	{
397	$section = self::getInstance()->{$sectionName};
398	$section[$name] = $value;
399	self::getInstance()->{$sectionName} = $section;
400	}
401	/**
402	* Sanity check a config file by checking contents
403	*
404	* @param string $localPath
405	* @param string $expectedContent
406	* @param bool $notify
407	* @return bool
408	*/
409	public function sanityCheck(string $localPath, string $expectedContent, bool $notify = \false) : bool
410	{
411	clearstatcache(\true, $localPath);
412	if (function_exists('opcache_invalidate')) {
413	@opcache_invalidate($localPath, $force = \true);
414	}
415	$content = @file_get_contents($localPath);
416	if (trim($content) !== trim($expectedContent)) {
417	if ($notify) {
418	/**
419	* Triggered when the INI config file was not written correctly with the expected content.
420	*
421	* @param string $localPath Absolute path to the changed file on the server.
422	*/
423	\Piwik\Piwik::postEvent('Core.configFileSanityCheckFailed', [$localPath]);
424	}
425	return \false;
426	}
427	return \true;
428	}
429	}
430