/** * Remove our scheduled function from WP and stop the IMAP loop. */ function bp_rbe_deactivate() { // stop IMAP connection if active if (bp_rbe_is_connected()) { bp_rbe_stop_imap(); // give plugin a chance to stop IMAP connection as it could be sleeping sleep(10); bp_rbe_log('Daisy, Daisy, give me your answer, do...'); } // remove remnants from any previous failed attempts to stop the inbox bp_rbe_cleanup(); bp_rbe_log('Plugin deactivated!'); }
/** * Failsafe for RBE. * * RBE occasionally hangs during the inbox loop. This function tries * to snap RBE out of it by checking the last few lines of the RBE * debug log. * * If all lines match our failed cronjob message, then reset RBE so * RBE can run fresh on the next scheduled run. * * @uses bp_rbe_tail() Grabs the last N lines from the RBE debug log * @uses bp_rbe_cleanup() Cleans up the DB entries that RBE uses * @since 1.0-RC1 */ function bp_rbe_failsafe() { // get the last N lines from the RBE debug log $last_entries = bp_rbe_tail(constant('BP_RBE_DEBUG_LOG_PATH'), constant('BP_RBE_TAIL_LINES')); if (empty($last_entries)) { return; } // count the number of tines our 'cronjob wants to connect' message occurs $counter = 0; // see if each line contains our cronjob fail string foreach ($last_entries as $entry) { if (strpos($entry, '--- Cronjob wants to connect - however according to our DB indicator, we already have an active IMAP connection! ---') !== false) { ++$counter; } } // if all lines match the cronjob fail string, reset RBE! if ($counter == constant('BP_RBE_TAIL_LINES')) { bp_rbe_log('--- Uh-oh! Looks like RBE is stuck! - FORCE RBE cleanup ---'); // cleanup RBE! bp_rbe_cleanup(); // use this hook to perhaps send an email to the admin? do_action('bp_rbe_failsafe_complete'); } }
/** * The main method we use to parse an IMAP inbox. */ public function run() { // $instance must be initialized before we go on! if (self::$instance === false) { return false; } // If safe mode isn't on, then let's set the execution time to unlimited if (!ini_get('safe_mode')) { set_time_limit(0); } // Try to connect $connect = $this->connect(); if (!$connect) { return false; } // Total duration we should keep the IMAP stream alive for in seconds $duration = bp_rbe_get_execution_time(); bp_rbe_log('--- Keep alive for ' . $duration / 60 . ' minutes ---'); bp_rbe_remove_imap_lock(); // Mark the current timestamp, mark the future time when we should close the IMAP connection; // Do our parsing until $future > $now; re-mark the timestamp at end of loop... rinse and repeat! for ($now = time(), $future = time() + $duration; $future > $now; $now = time()) { // Get number of messages $message_count = imap_num_msg($this->connection); // If there are messages in the inbox, let's start parsing! if ($message_count != 0) { // According to this: // http://www.php.net/manual/pl/function.imap-headerinfo.php#95012 // This speeds up rendering the email headers... could be wrong imap_headers($this->connection); bp_rbe_log('- Checking inbox -'); // Loop through each email message for ($i = 1; $i <= $message_count; ++$i) { // flush object cache if necessary // // we only flush the cache if the default object cache is in use // why? b/c the default object cache is only meant for single page loads and // since RBE runs in the background, we need to flush the object cache so WP // will do a direct DB query for the next data fetch if (!wp_using_ext_object_cache()) { wp_cache_flush(); } self::$html = false; $content = self::body_parser($this->connection, $i); $headers = $this->get_mail_headers($this->connection, $i); $data = array('headers' => $headers, 'to_email' => BP_Reply_By_Email_Parser::get_header($headers, 'To'), 'from_email' => BP_Reply_By_Email_Parser::get_header($headers, 'From'), 'content' => $content, 'is_html' => self::$html, 'subject' => imap_utf8(BP_Reply_By_Email_Parser::get_header($headers, 'Subject'))); $parser = BP_Reply_By_Email_Parser::init($data, $i); if (is_wp_error($parser)) { //do_action( 'bp_rbe_imap_no_match', $this->connection, $i, $headers, $parser->get_error_code() ); do_action('bp_rbe_no_match', $parser, $data, $i, $this->connection); } // do something during the loop // we mark the message for deletion here via this hook do_action('bp_rbe_imap_loop', $this->connection, $i); // unset some variables at the end of the loop unset($content, $headers, $data, $parser); } // do something after the loop do_action('bp_rbe_imap_after_loop', $this->connection); } // stop the loop if necessary if (bp_rbe_should_stop()) { if ($this->close()) { bp_rbe_log('--- Manual termination of connection confirmed! Kaching! ---'); } else { bp_rbe_log('--- Error - invalid connection during manual termination ---'); } remove_action('shutdown', 'bp_rbe_spawn_inbox_check'); exit; } // Give IMAP server a break sleep(10); // If the IMAP connection is down, reconnect if (!imap_ping($this->connection)) { bp_rbe_log('-- IMAP connection is down, attempting to reconnect... --'); if (bp_rbe_is_connecting(array('clearcache' => true))) { bp_rbe_log('--- RBE is already attempting to connect - stopping connection attempt ---'); continue; } // add lock marker before connecting bp_rbe_add_imap_lock(); // attempt to reconnect $reopen = BP_Reply_By_Email_Connect::init(array('reconnect' => true), $this->connection); if ($reopen) { bp_rbe_log('-- Reconnection successful! --'); } else { bp_rbe_log('-- Reconnection failed! :( --'); bp_rbe_log('Cannot connect: ' . imap_last_error()); // cleanup RBE after failure bp_rbe_cleanup(); remove_action('shutdown', 'bp_rbe_spawn_inbox_check'); exit; } } // Unset some variables to clear some memory unset($message_count); } if ($this->close()) { bp_rbe_log('--- Closing current connection automatically ---'); } else { bp_rbe_log('--- Invalid connection during close time ---'); } // autoconnect is off if (1 !== (int) bp_rbe_get_setting('keepaliveauto', array('refetch' => true))) { remove_action('shutdown', 'bp_rbe_spawn_inbox_check'); // sleep a bit before autoconnecting again } else { sleep(5); } exit; }