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Tracker.php
295 lines
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Matomo - free/libre analytics platform |
| 5 | * |
| 6 | * @link https://matomo.org |
| 7 | * @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later |
| 8 | */ |
| 9 | namespace Piwik; |
| 10 | |
| 11 | use Exception; |
| 12 | use Piwik\Container\StaticContainer; |
| 13 | use Piwik\Plugins\BulkTracking\Tracker\Requests; |
| 14 | use Piwik\Plugins\PrivacyManager\Config as PrivacyManagerConfig; |
| 15 | use Piwik\Tracker\Db as TrackerDb; |
| 16 | use Piwik\Tracker\Db\DbException; |
| 17 | use Piwik\Tracker\Handler; |
| 18 | use Piwik\Tracker\Request; |
| 19 | use Piwik\Tracker\RequestSet; |
| 20 | use Piwik\Tracker\TrackerConfig; |
| 21 | use Piwik\Tracker\Visit; |
| 22 | use Piwik\Plugin\Manager as PluginManager; |
| 23 | use Piwik\Log\LoggerInterface; |
| 24 | /** |
| 25 | * Class used by the logging script piwik.php called by the javascript tag. |
| 26 | * Handles the visitor and their actions on the website, saves the data in the DB, |
| 27 | * saves information in the cookie, etc. |
| 28 | * |
| 29 | * We try to include as little files as possible (no dependency on 3rd party modules). |
| 30 | */ |
| 31 | class Tracker |
| 32 | { |
| 33 | /** |
| 34 | * @var Db |
| 35 | */ |
| 36 | private static $db = null; |
| 37 | // We use hex ID that are 16 chars in length, ie. 64 bits IDs |
| 38 | public const LENGTH_HEX_ID_STRING = 16; |
| 39 | public const LENGTH_BINARY_ID = 8; |
| 40 | public static $initTrackerMode = \false; |
| 41 | private $countOfLoggedRequests = 0; |
| 42 | protected $isInstalled = null; |
| 43 | /** |
| 44 | * @var LoggerInterface |
| 45 | */ |
| 46 | private $logger; |
| 47 | public function __construct() |
| 48 | { |
| 49 | $this->logger = StaticContainer::get(LoggerInterface::class); |
| 50 | } |
| 51 | public function isDebugModeEnabled() |
| 52 | { |
| 53 | return array_key_exists('PIWIK_TRACKER_DEBUG', $GLOBALS) && $GLOBALS['PIWIK_TRACKER_DEBUG'] === \true; |
| 54 | } |
| 55 | public function shouldRecordStatistics() |
| 56 | { |
| 57 | $record = TrackerConfig::getConfigValue('record_statistics') != 0; |
| 58 | if (!$record) { |
| 59 | $this->logger->debug('Tracking is disabled in the config.ini.php via record_statistics=0'); |
| 60 | } |
| 61 | return $record && $this->isInstalled(); |
| 62 | } |
| 63 | public static function loadTrackerEnvironment() |
| 64 | { |
| 65 | \Piwik\SettingsServer::setIsTrackerApiRequest(); |
| 66 | if (empty($GLOBALS['PIWIK_TRACKER_DEBUG'])) { |
| 67 | $GLOBALS['PIWIK_TRACKER_DEBUG'] = self::isDebugEnabled(); |
| 68 | } |
| 69 | if (!empty($GLOBALS['PIWIK_TRACKER_DEBUG']) && !\Piwik\Common::isPhpCliMode()) { |
| 70 | \Piwik\Common::sendHeader('Content-Type: text/plain'); |
| 71 | } |
| 72 | PluginManager::getInstance()->loadTrackerPlugins(); |
| 73 | } |
| 74 | private function init() |
| 75 | { |
| 76 | $this->handleFatalErrors(); |
| 77 | if ($this->isDebugModeEnabled()) { |
| 78 | \Piwik\ErrorHandler::registerErrorHandler(); |
| 79 | \Piwik\ExceptionHandler::setUp(); |
| 80 | $this->logger->debug("Debug enabled - Input parameters: {params}", ['params' => var_export($_GET + $_POST, \true)]); |
| 81 | } |
| 82 | } |
| 83 | public function isInstalled() |
| 84 | { |
| 85 | if (is_null($this->isInstalled)) { |
| 86 | $this->isInstalled = \Piwik\SettingsPiwik::isMatomoInstalled(); |
| 87 | } |
| 88 | return $this->isInstalled; |
| 89 | } |
| 90 | public function main(Handler $handler, RequestSet $requestSet) |
| 91 | { |
| 92 | try { |
| 93 | $this->init(); |
| 94 | if ($this->isPreFlightCorsRequest()) { |
| 95 | \Piwik\Common::sendHeader('Access-Control-Allow-Methods: GET, POST'); |
| 96 | \Piwik\Common::sendHeader('Access-Control-Allow-Headers: *'); |
| 97 | \Piwik\Common::sendHeader('Access-Control-Allow-Origin: *'); |
| 98 | \Piwik\Common::sendResponseCode(204); |
| 99 | $this->logger->debug("Tracker detected preflight CORS request. Skipping..."); |
| 100 | return null; |
| 101 | } |
| 102 | $handler->init($this, $requestSet); |
| 103 | $this->track($handler, $requestSet); |
| 104 | } catch (Exception $e) { |
| 105 | $this->logger->debug("Tracker encountered an exception: {ex}", [$e]); |
| 106 | $handler->onException($this, $requestSet, $e); |
| 107 | } |
| 108 | \Piwik\Piwik::postEvent('Tracker.end'); |
| 109 | $response = $handler->finish($this, $requestSet); |
| 110 | $this->disconnectDatabase(); |
| 111 | return $response; |
| 112 | } |
| 113 | public function track(Handler $handler, RequestSet $requestSet) |
| 114 | { |
| 115 | if (!$this->shouldRecordStatistics()) { |
| 116 | return; |
| 117 | } |
| 118 | $requestSet->initRequestsAndTokenAuth(); |
| 119 | if ($requestSet->hasRequests()) { |
| 120 | $handler->onStartTrackRequests($this, $requestSet); |
| 121 | $handler->process($this, $requestSet); |
| 122 | $handler->onAllRequestsTracked($this, $requestSet); |
| 123 | } |
| 124 | } |
| 125 | /** |
| 126 | * @param Request $request |
| 127 | * @return void |
| 128 | */ |
| 129 | public function trackRequest(Request $request) |
| 130 | { |
| 131 | if ($request->isEmptyRequest()) { |
| 132 | $this->logger->debug('The request is empty'); |
| 133 | } else { |
| 134 | $this->logger->debug('Current datetime: {date}', ['date' => date("Y-m-d H:i:s", $request->getCurrentTimestamp())]); |
| 135 | $visit = Visit\Factory::make(); |
| 136 | $visit->setRequest($request); |
| 137 | $visit->handle(); |
| 138 | } |
| 139 | // increment successfully logged request count. make sure to do this after try-catch, |
| 140 | // since an excluded visit is considered 'successfully logged' |
| 141 | ++$this->countOfLoggedRequests; |
| 142 | } |
| 143 | /** |
| 144 | * Used to initialize core Piwik components on a piwik.php request |
| 145 | * Eg. when cache is missed and we will be calling some APIs to generate cache |
| 146 | */ |
| 147 | public static function initCorePiwikInTrackerMode() |
| 148 | { |
| 149 | if (\Piwik\SettingsServer::isTrackerApiRequest() && self::$initTrackerMode === \false) { |
| 150 | self::$initTrackerMode = \true; |
| 151 | require_once PIWIK_INCLUDE_PATH . '/core/Option.php'; |
| 152 | \Piwik\Access::getInstance(); |
| 153 | \Piwik\Config::getInstance(); |
| 154 | try { |
| 155 | \Piwik\Db::get(); |
| 156 | } catch (Exception $e) { |
| 157 | \Piwik\Db::createDatabaseObject(); |
| 158 | } |
| 159 | PluginManager::getInstance()->loadCorePluginsDuringTracker(); |
| 160 | } |
| 161 | } |
| 162 | public static function restoreTrackerPlugins() |
| 163 | { |
| 164 | if (\Piwik\SettingsServer::isTrackerApiRequest() && \Piwik\Tracker::$initTrackerMode) { |
| 165 | \Piwik\Plugin\Manager::getInstance()->loadTrackerPlugins(); |
| 166 | } |
| 167 | } |
| 168 | public function getCountOfLoggedRequests() |
| 169 | { |
| 170 | return $this->countOfLoggedRequests; |
| 171 | } |
| 172 | public function setCountOfLoggedRequests($numLoggedRequests) |
| 173 | { |
| 174 | $this->countOfLoggedRequests = $numLoggedRequests; |
| 175 | } |
| 176 | public function hasLoggedRequests() |
| 177 | { |
| 178 | return 0 !== $this->countOfLoggedRequests; |
| 179 | } |
| 180 | public function isDatabaseConnected() |
| 181 | { |
| 182 | return !is_null(self::$db); |
| 183 | } |
| 184 | public static function getDatabase() |
| 185 | { |
| 186 | if (is_null(self::$db)) { |
| 187 | try { |
| 188 | self::$db = TrackerDb::connectPiwikTrackerDb(); |
| 189 | } catch (Exception $e) { |
| 190 | $code = $e->getCode(); |
| 191 | // Note: PDOException might return a string as code, but we can't use this for DbException |
| 192 | throw new DbException($e->getMessage(), is_int($code) ? $code : 0); |
| 193 | } |
| 194 | } |
| 195 | return self::$db; |
| 196 | } |
| 197 | protected function disconnectDatabase() |
| 198 | { |
| 199 | if ($this->isDatabaseConnected()) { |
| 200 | // note: I think we do this only for the tests |
| 201 | self::$db->disconnect(); |
| 202 | self::$db = null; |
| 203 | } |
| 204 | } |
| 205 | // for tests |
| 206 | public static function disconnectCachedDbConnection() |
| 207 | { |
| 208 | // code redundancy w/ above is on purpose; above disconnectDatabase depends on method that can potentially be overridden |
| 209 | if (!is_null(self::$db)) { |
| 210 | self::$db->disconnect(); |
| 211 | self::$db = null; |
| 212 | } |
| 213 | } |
| 214 | public static function setTestEnvironment($args = null, $requestMethod = null) |
| 215 | { |
| 216 | if (is_null($args)) { |
| 217 | $requests = new Requests(); |
| 218 | $args = $requests->getRequestsArrayFromBulkRequest($requests->getRawBulkRequest()); |
| 219 | $args = $_GET + $args; |
| 220 | } |
| 221 | if (is_null($requestMethod) && array_key_exists('REQUEST_METHOD', $_SERVER)) { |
| 222 | $requestMethod = $_SERVER['REQUEST_METHOD']; |
| 223 | } elseif (is_null($requestMethod)) { |
| 224 | $requestMethod = 'GET'; |
| 225 | } |
| 226 | // Do not run scheduled tasks during tests |
| 227 | if (!defined('DEBUG_FORCE_SCHEDULED_TASKS')) { |
| 228 | TrackerConfig::setConfigValue('scheduled_tasks_min_interval', 0); |
| 229 | } |
| 230 | // if nothing found in _GET/_POST and we're doing a POST, assume bulk request. in which case, |
| 231 | // we have to bypass authentication |
| 232 | if (empty($args) && $requestMethod == 'POST') { |
| 233 | TrackerConfig::setConfigValue('tracking_requests_require_authentication', 0); |
| 234 | } |
| 235 | // Tests can force the use of 3rd party cookie for ID visitor |
| 236 | if (\Piwik\Common::getRequestVar('forceEnableFingerprintingAcrossWebsites', \false, null, $args) == 1) { |
| 237 | TrackerConfig::setConfigValue('enable_fingerprinting_across_websites', 1); |
| 238 | } |
| 239 | // Tests can simulate the tracker API maintenance mode |
| 240 | if (\Piwik\Common::getRequestVar('forceEnableTrackerMaintenanceMode', \false, null, $args) == 1) { |
| 241 | TrackerConfig::setConfigValue('record_statistics', 0); |
| 242 | } |
| 243 | // Tests can force the use of 3rd party cookie for ID visitor |
| 244 | if (\Piwik\Common::getRequestVar('forceUseThirdPartyCookie', \false, null, $args) == 1) { |
| 245 | TrackerConfig::setConfigValue('use_third_party_id_cookie', 1); |
| 246 | } |
| 247 | // Tests using window_look_back_for_visitor |
| 248 | if (\Piwik\Common::getRequestVar('forceLargeWindowLookBackForVisitor', \false, null, $args) == 1 || strpos(json_encode($args, \true), '"forceLargeWindowLookBackForVisitor":"1"') !== \false) { |
| 249 | TrackerConfig::setConfigValue('window_look_back_for_visitor', 2678400); |
| 250 | } |
| 251 | // Tests can force the enabling of IP anonymization |
| 252 | if (\Piwik\Common::getRequestVar('forceIpAnonymization', \false, null, $args) == 1) { |
| 253 | self::getDatabase(); |
| 254 | // make sure db is initialized |
| 255 | $privacyConfig = new PrivacyManagerConfig(); |
| 256 | $privacyConfig->ipAddressMaskLength = 2; |
| 257 | \Piwik\Plugins\PrivacyManager\IPAnonymizer::activate(); |
| 258 | \Piwik\Tracker\Cache::deleteTrackerCache(); |
| 259 | \Piwik\Filesystem::clearPhpCaches(); |
| 260 | } |
| 261 | } |
| 262 | private function handleFatalErrors() |
| 263 | { |
| 264 | register_shutdown_function(function () { |
| 265 | // TODO: add a log here |
| 266 | $lastError = error_get_last(); |
| 267 | if (!empty($lastError) && $lastError['type'] == \E_ERROR) { |
| 268 | \Piwik\Common::sendResponseCode(500); |
| 269 | } |
| 270 | }); |
| 271 | } |
| 272 | private static function isDebugEnabled() |
| 273 | { |
| 274 | try { |
| 275 | $debug = (bool) TrackerConfig::getConfigValue('debug'); |
| 276 | if ($debug) { |
| 277 | return \true; |
| 278 | } |
| 279 | $debugOnDemand = (bool) TrackerConfig::getConfigValue('debug_on_demand'); |
| 280 | if ($debugOnDemand) { |
| 281 | return (bool) \Piwik\Common::getRequestVar('debug', \false); |
| 282 | } |
| 283 | } catch (Exception $e) { |
| 284 | } |
| 285 | return \false; |
| 286 | } |
| 287 | public function isPreFlightCorsRequest() : bool |
| 288 | { |
| 289 | if (isset($_SERVER['REQUEST_METHOD']) && strtoupper($_SERVER['REQUEST_METHOD']) === 'OPTIONS') { |
| 290 | return !empty($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']) || !empty($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD']); |
| 291 | } |
| 292 | return \false; |
| 293 | } |
| 294 | } |
| 295 |