forked from vergnet/site-accueil-insa
118 lines
3 KiB
PHP
118 lines
3 KiB
PHP
<?php
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/**
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* Matomo - free/libre analytics platform
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*
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* @link https://matomo.org
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* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
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*
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*/
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namespace Piwik\Plugins\PrivacyManager;
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use Piwik\Common;
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use Piwik\Piwik;
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use Piwik\Tracker\IgnoreCookie;
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/**
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* Excludes visits where user agent's request contains either:
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*
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* - X-Do-Not-Track header (used by AdBlockPlus and NoScript)
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* - DNT header (used by Mozilla)
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*
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*/
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class DoNotTrackHeaderChecker
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{
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/**
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* @param Config $config
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*/
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public function __construct($config = null)
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{
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$this->config = $config ?: new Config();
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}
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/**
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* Checks for DoNotTrack headers and if found, sets `$exclude` to `true`.
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*/
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public function checkHeaderInTracker(&$exclude)
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{
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if ($exclude) {
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Common::printDebug("Visit is already excluded, no need to check DoNotTrack support.");
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return;
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}
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$exclude = $this->isDoNotTrackFound();
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if($exclude) {
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IgnoreCookie::deleteThirdPartyCookieUIDIfExists();
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// this is an optional supplement to the site's tracking status resource at:
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// /.well-known/dnt
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// per Tracking Preference Expression
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//Tracking Preference Expression has been updated to require Tk: N rather than Tk: 1
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Common::sendHeader('Tk: N');
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}
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}
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/**
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* @return bool
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*/
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public function isDoNotTrackFound()
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{
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if (!$this->isActive()) {
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Common::printDebug("DoNotTrack support is not enabled, skip check");
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return false;
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}
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if (!$this->isHeaderDntFound()) {
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Common::printDebug("DoNotTrack header not found");
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return false;
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}
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$shouldIgnore = false;
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Piwik::postEvent('PrivacyManager.shouldIgnoreDnt', array(&$shouldIgnore));
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if($shouldIgnore) {
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Common::printDebug("DoNotTrack header ignored by Matomo because of a plugin");
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return false;
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}
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Common::printDebug("DoNotTrack header found!");
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return true;
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}
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/**
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* Deactivates DoNotTrack header checking. This function will not be called by the Tracker.
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*/
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public function deactivate()
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{
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$this->config->doNotTrackEnabled = false;
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}
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/**
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* Activates DoNotTrack header checking. This function will not be called by the Tracker.
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*/
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public function activate()
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{
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$this->config->doNotTrackEnabled = true;
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}
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/**
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* Returns true if server side DoNotTrack support is enabled, false if otherwise.
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*
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* @return bool
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*/
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public function isActive()
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{
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return $this->config->doNotTrackEnabled;
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}
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/**
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* @return bool
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*/
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protected function isHeaderDntFound()
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{
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return (isset($_SERVER['HTTP_X_DO_NOT_TRACK']) && $_SERVER['HTTP_X_DO_NOT_TRACK'] === '1')
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|| (isset($_SERVER['HTTP_DNT']) && substr($_SERVER['HTTP_DNT'], 0, 1) === '1');
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}
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}
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