self::MAX_RESUME_ATTEMPTS) { $valid = false; return self::DEFAULT_RESUME_ATTEMPTS; } $valid = true; return $attempts; } private static function setRemainingResumeAttempts($attempts) { wfConfig::set(self::CONFIG_REMAINING_RESUME_ATTEMPTS, $attempts); } public static function getConfiguredResumeAttempts() { $attempts = (int) wfConfig::get(self::CONFIG_MAX_RESUME_ATTEMPTS, self::DEFAULT_RESUME_ATTEMPTS); return self::validateResumeAttempts($attempts); } private static function resetResumeAttemptCounter() { $attempts = self::getConfiguredResumeAttempts(); self::setRemainingResumeAttempts($attempts); return $attempts; } private static function getRemainingResumeAttempts() { $attempts = (int) wfConfig::get(self::CONFIG_REMAINING_RESUME_ATTEMPTS, 0); return self::validateResumeAttempts($attempts); } public static function handleScanStart($mode) { wfConfig::set(self::CONFIG_LAST_ATTEMPT_MODE, $mode); $maxAttempts = self::resetResumeAttemptCounter(); if ($maxAttempts > 0) self::beginMonitoring(); } public static function monitorScan() { $remainingAttempts = self::getRemainingResumeAttempts(); if ($remainingAttempts > 0) { $now = time(); $lastAttempt = wfConfig::get(self::CONFIG_LAST_ATTEMPT); if ($lastAttempt === null || $now - $lastAttempt < self::SCAN_START_TIMEOUT) return; $lastSuccess = wfConfig::get(self::CONFIG_LAST_SUCCESS); self::setRemainingResumeAttempts(--$remainingAttempts); if ($lastSuccess === null || $lastAttempt > $lastSuccess) { wordfence::status(2, 'info', sprintf(__('Attempting to resume scan stage (%d attempt(s) remaining)...', 'wordfence'), $remainingAttempts)); self::resumeScan(); } } else { self::endMonitoring(); } } private static function resumeScan() { $mode = wfConfig::get(self::CONFIG_LAST_ATTEMPT_MODE); if (!wfScanner::isValidScanType($mode)) $mode = false; wfScanEngine::startScan(wfConfig::get(self::CONFIG_LAST_ATTEMPT_WAS_FORK), $mode, true); } private static function logTimestamp($key) { wfConfig::set($key, time()); } public static function logLastAttempt($fork) { self::logTimestamp(self::CONFIG_LAST_ATTEMPT); wfConfig::set(self::CONFIG_LAST_ATTEMPT_WAS_FORK, $fork); } public static function logLastSuccess() { self::logTimestamp(self::CONFIG_LAST_SUCCESS); } public static function handleStageStart($fork) { if ($fork) self::resetResumeAttemptCounter(); } public static function registerCronInterval($schedules) { if (!array_key_exists(self::CRON_INTERVAL_NAME, $schedules)) { $schedules[self::CRON_INTERVAL_NAME] = array( 'interval' => self::CRON_INTERVAL_AMOUNT, 'display' => 'Wordfence Scan Monitor' ); } return $schedules; } public static function registerActions() { add_filter('cron_schedules', array(self::class, 'registerCronInterval')); add_action(self::CRON_HOOK, array(self::class, 'monitorScan')); } public static function handleDeactivation() { self::endMonitoring(); } }