SettingsServer.php — Matomo Analytics – Powerful, Privacy-First Insights for WordPress 5.8.2

matomo / app / core / SettingsServer.php

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SettingsServer.php

238 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	/**
12	* Contains helper methods that can be used to get information regarding the
13	* server, its settings and currently used PHP settings.
14	*
15	*/
16	class SettingsServer
17	{
18	/**
19	* Returns true if the current script execution was triggered by the cron archiving script.
20	*
21	* Helpful for error handling: directly throw error without HTML (eg. when DB is down).
22	*
23	* @return bool
24	* @api
25	*/
26	public static function isArchivePhpTriggered()
27	{
28	return !empty($_GET['trigger']) && $_GET['trigger'] == 'archivephp' && \Piwik\Piwik::hasUserSuperUserAccess();
29	}
30	/**
31	* Returns true if the current request is a Tracker request.
32	*
33	* @return bool true if the current request is a Tracking API Request (ie. piwik.php)
34	*/
35	public static function isTrackerApiRequest()
36	{
37	return !empty($GLOBALS['PIWIK_TRACKER_MODE']);
38	}
39	/**
40	* Mark the current request as a Tracker API request
41	*/
42	public static function setIsTrackerApiRequest()
43	{
44	$GLOBALS['PIWIK_TRACKER_MODE'] = \true;
45	}
46	/**
47	* Set the current request is not a tracker API request
48	*/
49	public static function setIsNotTrackerApiRequest()
50	{
51	$GLOBALS['PIWIK_TRACKER_MODE'] = \false;
52	}
53	/**
54	* Returns true if Matomo is running within Matomo for WordPress.
55	*
56	* @return bool true if Matomo is running in WordPress, false if Matomo is running as part of On-Premise
57	* @api
58	*/
59	public static function isMatomoForWordPress()
60	{
61	return defined('ABSPATH') && function_exists('\\add_action');
62	}
63	/**
64	* Returns `true` if running on Microsoft IIS 7 (or above), `false` if otherwise.
65	*
66	* @return bool
67	* @api
68	*/
69	public static function isIIS()
70	{
71	$iis = isset($_SERVER['SERVER_SOFTWARE']) && preg_match('/^Microsoft-IIS\\/(.+)/', $_SERVER['SERVER_SOFTWARE'], $matches) && version_compare($matches[1], '7') >= 0;
72	return $iis;
73	}
74	/**
75	* Returns `true` if running on a Windows operating system, `false` if otherwise.
76	*
77	* @since 0.6.5
78	* @return bool
79	* @api
80	*/
81	public static function isWindows()
82	{
83	if (\PHP_OS_FAMILY == "Unknown") {
84	return \DIRECTORY_SEPARATOR === '\\';
85	}
86	return \PHP_OS_FAMILY === "Windows";
87	}
88	/**
89	* Returns `true` if this PHP version/build supports timezone manipulation
90	* (e.g., php >= 5.2, or compiled with EXPERIMENTAL_DATE_SUPPORT=1 for
91	* php < 5.2).
92	*
93	* @return bool
94	* @api
95	*/
96	public static function isTimezoneSupportEnabled()
97	{
98	return function_exists('date_create') && function_exists('date_default_timezone_set') && function_exists('timezone_identifiers_list') && function_exists('timezone_open') && function_exists('timezone_offset_get');
99	}
100	/**
101	* Returns `true` if the GD PHP extension is available, `false` if otherwise.
102	*
103	* _Note: ImageGraph and the sparkline report visualization depend on the GD extension._
104	*
105	* @return bool
106	* @api
107	*/
108	public static function isGdExtensionEnabled()
109	{
110	static $gd = null;
111	if (is_null($gd)) {
112	$gd = \false;
113	$extensions = @get_loaded_extensions();
114	if (is_array($extensions)) {
115	$gd = in_array('gd', $extensions) && function_exists('imageftbbox');
116	}
117	}
118	return $gd;
119	}
120	/**
121	* Raise PHP memory limit if below the minimum required
122	*
123	* @return bool true if set; false otherwise
124	*/
125	public static function raiseMemoryLimitIfNecessary()
126	{
127	if (self::isArchivePhpTriggered()) {
128	// core:archive command: no time limit
129	self::setMaxExecutionTime(0);
130	}
131	$memoryLimit = self::getMemoryLimitValue();
132	if ($memoryLimit === \false) {
133	return \false;
134	}
135	$minimumMemoryLimit = \Piwik\Config::getInstance()->General['minimum_memory_limit'];
136	if (self::isArchivePhpTriggered()) {
137	// core:archive command: high memory limit
138	$minimumMemoryLimitWhenArchiving = \Piwik\Config::getInstance()->General['minimum_memory_limit_when_archiving'];
139	if ($memoryLimit < $minimumMemoryLimitWhenArchiving) {
140	return self::setMemoryLimit($minimumMemoryLimitWhenArchiving);
141	}
142	return \false;
143	}
144	if ($memoryLimit < $minimumMemoryLimit) {
145	return self::setMemoryLimit($minimumMemoryLimit);
146	}
147	return \false;
148	}
149	/**
150	* Set PHP memory limit
151	*
152	* Note: system settings may prevent scripts from overriding the master value
153	*
154	* @param int $minimumMemoryLimit
155	* @return bool true if set; false otherwise
156	*/
157	protected static function setMemoryLimit($minimumMemoryLimit)
158	{
159	// in Megabytes
160	$currentValue = self::getMemoryLimitValue();
161	if ($currentValue === \false \|\| $currentValue < $minimumMemoryLimit && @ini_set('memory_limit', $minimumMemoryLimit . 'M')) {
162	return \true;
163	}
164	return \false;
165	}
166	/**
167	* Get php memory_limit (in Megabytes)
168	*
169	* Prior to PHP 5.2.1, or on Windows, --enable-memory-limit is not a
170	* compile-time default, so ini_get('memory_limit') may return false.
171	*
172	* @return int\|bool memory limit in megabytes, or false if there is no limit
173	*/
174	public static function getMemoryLimitValue()
175	{
176	if (($memory = ini_get('memory_limit')) > 0) {
177	return self::getMegaBytesFromShorthandByte($memory);
178	}
179	// no memory limit
180	return \false;
181	}
182	/**
183	* Get php post_max_size (in Megabytes)
184	*
185	* @return int\|bool max upload size in megabytes, or false if there is no limit
186	*/
187	public static function getPostMaxUploadSize()
188	{
189	if (($maxPostSize = ini_get('post_max_size')) > 0) {
190	return self::getMegaBytesFromShorthandByte($maxPostSize);
191	}
192	// no max upload size
193	return \false;
194	}
195	/**
196	* @see https://www.php.net/manual/en/faq.using.php#faq.using.shorthandbytes
197	* @param $value
198	* @return false\|float\|int
199	*/
200	private static function getMegaBytesFromShorthandByte($value)
201	{
202	$value = str_replace(' ', '', $value);
203	$shorthandByteOption = substr($value, -1);
204	switch ($shorthandByteOption) {
205	case 'G':
206	case 'g':
207	return substr($value, 0, -1) * 1024;
208	case 'M':
209	case 'm':
210	return substr($value, 0, -1);
211	case 'K':
212	case 'k':
213	return substr($value, 0, -1) / 1024;
214	}
215	if (is_numeric($value)) {
216	return (int) $value / 1048576;
217	}
218	return \false;
219	}
220	/**
221	* Set maximum script execution time.
222	*
223	* @param int $executionTime max execution time in seconds (0 = no limit)
224	*/
225	public static function setMaxExecutionTime($executionTime)
226	{
227	// in the event one or the other is disabled...
228	@ini_set('max_execution_time', $executionTime);
229	if (function_exists('set_time_limit')) {
230	@set_time_limit($executionTime);
231	}
232	}
233	public static function isMac()
234	{
235	return defined('PHP_OS') && \PHP_OS === 'Darwin';
236	}
237	}
238