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<?php
/**
* Piwik - free/libre analytics platform
*
* @link https://matomo.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik\Plugins\PrivacyManager;
use Piwik\Common;
use Piwik\Network\IP;
/**
* Anonymize visitor IP addresses to comply with the privacy laws/guidelines in countries, such as Germany.
*/
class IPAnonymizer
{
/**
* Internal function to mask portions of the visitor IP address
*
* @param IP $ip
* @param int $maskLength Number of octets to reset
* @return IP
*/
public static function applyIPMask(IP $ip, $maskLength)
{
$newIpObject = $ip->anonymize($maskLength);
return $newIpObject;
}
/**
* Hook on Tracker.Visit.setVisitorIp to anomymize visitor IP addresses
* @param string $ip IP address in binary format (network format)
*/
public function setVisitorIpAddress(&$ip)
{
$ipObject = IP::fromBinaryIP($ip);
if (!$this->isActive()) {
Common::printDebug("Visitor IP was _not_ anonymized: ". $ipObject->toString());
return;
}
$privacyConfig = new Config();
$newIpObject = self::applyIPMask($ipObject, $privacyConfig->ipAddressMaskLength);
$ip = $newIpObject->toBinary();
Common::printDebug("Visitor IP (was: ". $ipObject->toString() .") has been anonymized: ". $newIpObject->toString());
}
/**
* Deactivates IP anonymization. This function will not be called by the Tracker.
*/
public static function deactivate()
{
$privacyConfig = new Config();
$privacyConfig->ipAnonymizerEnabled = false;
}
/**
* Activates IP anonymization. This function will not be called by the Tracker.
*/
public static function activate()
{
$privacyConfig = new Config();
$privacyConfig->ipAnonymizerEnabled = true;
}
/**
* Returns true if IP anonymization support is enabled, false if otherwise.
*
* @return bool
*/
public static function isActive()
{
$privacyConfig = new Config();
return $privacyConfig->ipAnonymizerEnabled;
}
}
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