/** * Process an inbound address to obtain the data stored within it. * * @param string $address The fully formed e-mail address to process. */ protected function process($address) { global $DB; if (!self::is_correct_format($address)) { // This address does not contain a subaddress to parse. return; } // Ensure that the instance record is empty. $this->record = null; $record = new \stdClass(); $record->address = $address; list($localpart) = explode('@', $address, 2); list($record->mailbox, $encodeddata) = explode('+', $localpart, 2); $data = base64_decode($encodeddata, true); if (!$data) { // This address has no valid data. return; } $content = @unpack('N2handlerid/N2userid/N2datavalue/H*datakey', $data); if (!$content) { // This address has no data. return; } if (PHP_INT_SIZE === 8) { // 64-bit machine. $content['handlerid'] = $content['handlerid1'] << 32 | $content['handlerid2']; $content['userid'] = $content['userid1'] << 32 | $content['userid2']; $content['datavalue'] = $content['datavalue1'] << 32 | $content['datavalue2']; } else { if ($content['handlerid1'] > 0 || $content['userid1'] > 0 || $content['datavalue1'] > 0) { // Any 64-bit integer which is greater than the 32-bit integer size will have a non-zero value in the first // half of the integer. throw new \moodle_exception('Mixed environment.' . ' Key generated with a 64-bit machine but received into a 32-bit machine.'); } $content['handlerid'] = $content['handlerid2']; $content['userid'] = $content['userid2']; $content['datavalue'] = $content['datavalue2']; } // Clear the 32-bit to 64-bit variables away. unset($content['handlerid1']); unset($content['handlerid2']); unset($content['userid1']); unset($content['userid2']); unset($content['datavalue1']); unset($content['datavalue2']); $record = (object) array_merge((array) $record, $content); // Fetch the user record. $record->user = $DB->get_record('user', array('id' => $record->userid)); // Fetch and set the handler. if ($handler = manager::get_handler_from_id($record->handlerid)) { $this->handler = $handler; // Retrieve the record for the data key. $record->data = $DB->get_record('messageinbound_datakeys', array('handler' => $handler->id, 'datavalue' => $record->datavalue)); } $this->record = $record; }