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<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik;
/**
* Contains helper methods that can be used to get information regarding the
* server, its settings and currently used PHP settings.
*
*/
class SettingsServer
{
/**
* Returns true if the current script execution was triggered by the cron archiving script.
*
* Helpful for error handling: directly throw error without HTML (eg. when DB is down).
*
* @return bool
* @api
*/
public static function isArchivePhpTriggered()
{
return !empty($_GET['trigger']) && $_GET['trigger'] == 'archivephp' && \Piwik\Piwik::hasUserSuperUserAccess();
}
/**
* Returns true if the current request is a Tracker request.
*
* @return bool true if the current request is a Tracking API Request (ie. piwik.php)
*/
public static function isTrackerApiRequest()
{
return !empty($GLOBALS['PIWIK_TRACKER_MODE']);
}
/**
* Mark the current request as a Tracker API request
*/
public static function setIsTrackerApiRequest()
{
$GLOBALS['PIWIK_TRACKER_MODE'] = true;
}
/**
* Set the current request is not a tracker API request
*/
public static function setIsNotTrackerApiRequest()
{
$GLOBALS['PIWIK_TRACKER_MODE'] = false;
}
/**
* Returns true if Matomo is running within Matomo for WordPress.
*
* @return bool true if Matomo is running in WordPress, false if Matomo is running as part of On-Premise
* @api
*/
public static function isMatomoForWordPress()
{
return defined('ABSPATH') && function_exists('\\add_action');
}
/**
* Returns `true` if running on Microsoft IIS 7 (or above), `false` if otherwise.
*
* @return bool
* @api
*/
public static function isIIS()
{
$iis = isset($_SERVER['SERVER_SOFTWARE']) && preg_match('/^Microsoft-IIS\\/(.+)/', $_SERVER['SERVER_SOFTWARE'], $matches) && version_compare($matches[1], '7') >= 0;
return $iis;
}
/**
* Returns `true` if running on a Windows operating system, `false` if otherwise.
*
* @since 0.6.5
* @return bool
* @api
*/
public static function isWindows()
{
if (PHP_OS_FAMILY == "Unknown") {
return DIRECTORY_SEPARATOR === '\\';
}
return PHP_OS_FAMILY === "Windows";
}
/**
* Returns `true` if this PHP version/build supports timezone manipulation
* (e.g., php >= 5.2, or compiled with **EXPERIMENTAL_DATE_SUPPORT=1** for
* php < 5.2).
*
* @return bool
* @api
*/
public static function isTimezoneSupportEnabled()
{
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');
}
/**
* Returns `true` if the GD PHP extension is available, `false` if otherwise.
*
* _Note: ImageGraph and the sparkline report visualization depend on the GD extension._
*
* @return bool
* @api
*/
public static function isGdExtensionEnabled()
{
static $gd = null;
if (is_null($gd)) {
$gd = false;
$extensions = @get_loaded_extensions();
if (is_array($extensions)) {
$gd = in_array('gd', $extensions) && function_exists('imageftbbox');
}
}
return $gd;
}
/**
* Raise PHP memory limit if below the minimum required
*
* @return bool true if set; false otherwise
*/
public static function raiseMemoryLimitIfNecessary()
{
if (self::isArchivePhpTriggered()) {
// core:archive command: no time limit
self::setMaxExecutionTime(0);
}
$memoryLimit = self::getMemoryLimitValue();
if ($memoryLimit === false) {
return false;
}
$minimumMemoryLimit = \Piwik\Config::getInstance()->General['minimum_memory_limit'];
if (self::isArchivePhpTriggered()) {
// core:archive command: high memory limit
$minimumMemoryLimitWhenArchiving = \Piwik\Config::getInstance()->General['minimum_memory_limit_when_archiving'];
if ($memoryLimit < $minimumMemoryLimitWhenArchiving) {
return self::setMemoryLimit($minimumMemoryLimitWhenArchiving);
}
return false;
}
if ($memoryLimit < $minimumMemoryLimit) {
return self::setMemoryLimit($minimumMemoryLimit);
}
return false;
}
/**
* Set PHP memory limit
*
* Note: system settings may prevent scripts from overriding the master value
*
* @param int $minimumMemoryLimit
* @return bool true if set; false otherwise
*/
protected static function setMemoryLimit($minimumMemoryLimit)
{
// in Megabytes
$currentValue = self::getMemoryLimitValue();
if ($currentValue === false || $currentValue < $minimumMemoryLimit && @ini_set('memory_limit', $minimumMemoryLimit . 'M')) {
return true;
}
return false;
}
/**
* Get php memory_limit (in Megabytes)
*
* Prior to PHP 5.2.1, or on Windows, --enable-memory-limit is not a
* compile-time default, so ini_get('memory_limit') may return false.
*
* @return int|bool memory limit in megabytes, or false if there is no limit
*/
public static function getMemoryLimitValue()
{
if (($memory = ini_get('memory_limit')) > 0) {
return self::getMegaBytesFromShorthandByte($memory);
}
// no memory limit
return false;
}
/**
* Get php post_max_size (in Megabytes)
*
* @return int|bool max upload size in megabytes, or false if there is no limit
*/
public static function getPostMaxUploadSize()
{
if (($maxPostSize = ini_get('post_max_size')) > 0) {
return self::getMegaBytesFromShorthandByte($maxPostSize);
}
// no max upload size
return false;
}
/**
* @see http://www.php.net/manual/en/faq.using.php#faq.using.shorthandbytes
* @param $value
* @return false|float|int
*/
private static function getMegaBytesFromShorthandByte($value)
{
$value = str_replace(' ', '', $value);
$shorthandByteOption = substr($value, -1);
switch ($shorthandByteOption) {
case 'G':
case 'g':
return substr($value, 0, -1) * 1024;
case 'M':
case 'm':
return substr($value, 0, -1);
case 'K':
case 'k':
return substr($value, 0, -1) / 1024;
}
if (is_numeric($value)) {
return (int) $value / 1048576;
}
return false;
}
/**
* Set maximum script execution time.
*
* @param int $executionTime max execution time in seconds (0 = no limit)
*/
public static function setMaxExecutionTime($executionTime)
{
// in the event one or the other is disabled...
@ini_set('max_execution_time', $executionTime);
if (function_exists('set_time_limit')) {
@set_time_limit($executionTime);
}
}
public static function isMac()
{
return defined('PHP_OS') && PHP_OS === 'Darwin';
}
}