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<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.org
* @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Piwik\Plugins\PrivacyManager\Tracker;
use Piwik\Common;
use Piwik\Plugins\PrivacyManager\PrivacyManager;
use Piwik\Plugins\PrivacyManager\ReferrerAnonymizer;
use Piwik\SettingsPiwik;
use Piwik\Tracker\Request;
use Piwik\Tracker;
use Piwik\Plugins\PrivacyManager\Config as PrivacyManagerConfig;
use Piwik\Tracker\Visit\VisitProperties;
class RequestProcessor extends Tracker\RequestProcessor
{
private $config;
private $referrerAnonymizer;
public function __construct(PrivacyManagerConfig $config, ReferrerAnonymizer $referrerAnonymizer)
{
$this->config = $config;
$this->referrerAnonymizer = $referrerAnonymizer;
}
public function manipulateRequest(Request $request)
{
if ($this->config->anonymizeUserId) {
$userId = $request->getParam('uid');
if ($this->isValueSet($userId)) {
$userIdAnonymized = self::anonymizeUserId($userId);
$request->setParam('uid', $userIdAnonymized);
}
}
if ($this->config->anonymizeOrderId) {
$orderId = $request->getParam('ec_id');
if ($this->isValueSet($orderId)) {
$orderIdAnonymized = sha1(Common::getRandomInt() . $orderId . time() . SettingsPiwik::getSalt());
$request->setParam('ec_id', $orderIdAnonymized);
}
}
}
public function onNewVisit(VisitProperties $visitProperties, Request $request)
{
$type = $visitProperties->getProperty('referer_type');
// we do not anonymise the referrer url in manipulateRequest because otherwise the referrer would not be detected
// correctly
$url = $visitProperties->getProperty('referer_url');
$url = $this->referrerAnonymizer->anonymiseReferrerUrl($url, $this->config->anonymizeReferrer);
$visitProperties->setProperty('referer_url', $url);
$name = $visitProperties->getProperty('referer_name');
$name = $this->referrerAnonymizer->anonymiseReferrerName($name, $type, $this->config->anonymizeReferrer);
$visitProperties->setProperty('referer_name', $name);
$keyword = $visitProperties->getProperty('referer_keyword');
$keyword = $this->referrerAnonymizer->anonymiseReferrerKeyword($keyword, $type, $this->config->anonymizeReferrer);
$visitProperties->setProperty('referer_keyword', $keyword);
}
public function onExistingVisit(&$valuesToUpdate, VisitProperties $visitProperties, Request $request)
{
if (isset($valuesToUpdate['referer_type'])) {
$type = $valuesToUpdate['referer_type'];
} else {
$type = $visitProperties->getProperty('referer_type');
}
if (isset($valuesToUpdate['referer_url'])) {
$valuesToUpdate['referer_url'] = $this->referrerAnonymizer->anonymiseReferrerUrl($valuesToUpdate['referer_url'], $this->config->anonymizeReferrer);
}
if (isset($valuesToUpdate['referer_name'])) {
$valuesToUpdate['referer_name'] = $this->referrerAnonymizer->anonymiseReferrerName($valuesToUpdate['referer_name'], $type, $this->config->anonymizeReferrer);
}
if (isset($valuesToUpdate['referer_keyword'])) {
$valuesToUpdate['referer_keyword'] = $this->referrerAnonymizer->anonymiseReferrerKeyword($valuesToUpdate['referer_keyword'], $type, $this->config->anonymizeReferrer);
}
}
/**
* pseudo anonymization as we need to make sure to always generate the same UserId for the same original UserID
*
* @param $userId
* @return string
*/
public static function anonymizeUserId($userId)
{
$trackerCache = Tracker\Cache::getCacheGeneral();
$salt = '';
if (!empty($trackerCache[PrivacyManager::OPTION_USERID_SALT])) {
$salt = $trackerCache[PrivacyManager::OPTION_USERID_SALT];
}
if (empty($salt)) {
return $userId;
}
return sha1($userId . $salt);
}
private function isValueSet($value)
{
return $value !== '' && $value !== false && $value !== null;
}
}
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