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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\Tracker;
use Piwik\Config;
use Piwik\Container\StaticContainer;
use Piwik\Date;
use Piwik\Tracker;
use Piwik\DeviceDetector\DeviceDetectorFactory;
use Piwik\SettingsPiwik;
class Settings // TODO: merge w/ visitor recognizer or make it it's own service. the class name is required for BC.
{
const OS_BOT = 'BOT';
/**
* If `true`, the config ID for a visitor will be the same no matter what site is being tracked.
* If `false, the config ID will be different.
*
* @var bool
*/
private $isSameFingerprintsAcrossWebsites;
public function __construct($isSameFingerprintsAcrossWebsites)
{
$this->isSameFingerprintsAcrossWebsites = $isSameFingerprintsAcrossWebsites;
}
public function getConfigId(Request $request, $ipAddress)
{
list($plugin_Flash, $plugin_Java, $plugin_Quicktime, $plugin_RealPlayer, $plugin_PDF,
$plugin_WindowsMedia, $plugin_Silverlight, $plugin_Cookie) = $request->getPlugins();
$userAgent = $request->getUserAgent();
$deviceDetector = StaticContainer::get(DeviceDetectorFactory::class)->makeInstance($userAgent);
$aBrowserInfo = $deviceDetector->getClient();
if (empty($aBrowserInfo['type']) || 'browser' !== $aBrowserInfo['type']) {
// for now only track browsers
unset($aBrowserInfo);
}
$browserName = !empty($aBrowserInfo['short_name']) ? $aBrowserInfo['short_name'] : 'UNK';
$browserVersion = !empty($aBrowserInfo['version']) ? $aBrowserInfo['version'] : '';
if ($deviceDetector->isBot()) {
$os = self::OS_BOT;
} else {
$os = $deviceDetector->getOS();
$os = empty($os['short_name']) ? 'UNK' : $os['short_name'];
}
$browserLang = substr($request->getBrowserLanguage(), 0, 20); // limit the length of this string to match db
$trackerConfig = Config::getInstance()->Tracker;
$fingerprintSalt = '';
// fingerprint salt won't work when across multiple sites since all sites could have different timezones
// also cant add fingerprint salt for a specific day when we dont create new visit after midnight
if (!$this->isSameFingerprintsAcrossWebsites && !empty($trackerConfig['create_new_visit_after_midnight'])) {
$cache = Cache::getCacheWebsiteAttributes($request->getIdSite());
$date = Date::factory((int) $request->getCurrentTimestamp());
$fingerprintSaltKey = new FingerprintSalt();
$dateString = $fingerprintSaltKey->getDateString($date, $cache['timezone']);
if (!empty($cache[FingerprintSalt::OPTION_PREFIX . $dateString])) {
$fingerprintSalt = $cache[FingerprintSalt::OPTION_PREFIX . $dateString];
} else {
// we query the DB directly for requests older than 2-3 days...
$fingerprintSalt = $fingerprintSaltKey->getSalt($dateString, $request->getIdSite());
}
$fingerprintSalt .= $dateString;
if (defined('PIWIK_TEST_MODE') && PIWIK_TEST_MODE) {
$fingerprintSalt = ''; // use fixed value so they don't change randomly in tests
}
}
return $this->getConfigHash(
$request,
$os,
$browserName,
$browserVersion,
$plugin_Flash,
$plugin_Java,
$plugin_Quicktime,
$plugin_RealPlayer,
$plugin_PDF,
$plugin_WindowsMedia,
$plugin_Silverlight,
$plugin_Cookie,
$ipAddress,
$browserLang,
$fingerprintSalt);
}
/**
* Returns a 64-bit hash that attempts to identify a user.
* Maintaining some privacy by default, eg. prevents the merging of several Piwik serve together for matching across instances..
*
* @param $os
* @param $browserName
* @param $browserVersion
* @param $plugin_Flash
* @param $plugin_Java
* @param $plugin_Quicktime
* @param $plugin_RealPlayer
* @param $plugin_PDF
* @param $plugin_WindowsMedia
* @param $plugin_Silverlight
* @param $plugin_Cookie
* @param $ip
* @param $browserLang
* @param $fingerprintHash
* @return string
*/
protected function getConfigHash(Request $request, $os, $browserName, $browserVersion, $plugin_Flash, $plugin_Java,
$plugin_Quicktime, $plugin_RealPlayer, $plugin_PDF,
$plugin_WindowsMedia, $plugin_Silverlight, $plugin_Cookie, $ip,
$browserLang, $fingerprintHash)
{
// prevent the config hash from being the same, across different Piwik instances
// (limits ability of different Piwik instances to cross-match users)
$salt = SettingsPiwik::getSalt();
$configString =
$os
. $browserName . $browserVersion
. $plugin_Flash . $plugin_Java . '0' . $plugin_Quicktime . $plugin_RealPlayer . $plugin_PDF
. $plugin_WindowsMedia . '0' . $plugin_Silverlight . $plugin_Cookie
. $ip
. $browserLang
. $salt
. $fingerprintHash;
if (!$this->isSameFingerprintsAcrossWebsites) {
$configString .= $request->getIdSite();
}
$hash = md5($configString, $raw_output = true);
return substr($hash, 0, Tracker::LENGTH_BINARY_ID);
}
}
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