REST_Controller::_detect_api_key PHP Méthode

    protected function _detect_api_key()
    {
        // Get the api key name variable set in the rest config file
        $api_key_variable = $this->config->item('rest_key_name');
        // Work out the name of the SERVER entry based on config
        $key_name = 'HTTP_' . strtoupper(str_replace('-', '_', $api_key_variable));
        $this->rest->key = NULL;
        $this->rest->level = NULL;
        $this->rest->user_id = NULL;
        $this->rest->ignore_limits = FALSE;
        // Find the key from server or arguments
        if ($key = isset($this->_args[$api_key_variable]) ? $this->_args[$api_key_variable] : $this->input->server($key_name)) {
            if (!($row = $this->rest->db->where($this->config->item('rest_key_column'), $key)->get($this->config->item('rest_keys_table'))->row())) {
                return FALSE;
            }
            $this->rest->key = $row->{$this->config->item('rest_key_column')};
            isset($row->user_id) && ($this->rest->user_id = $row->user_id);
            isset($row->level) && ($this->rest->level = $row->level);
            isset($row->ignore_limits) && ($this->rest->ignore_limits = $row->ignore_limits);
            $this->_apiuser = $row;
            /*
             * If "is private key" is enabled, compare the ip address with the list
             * of valid ip addresses stored in the database
             */
            if (empty($row->is_private_key) === FALSE) {
                // Check for a list of valid ip addresses
                if (isset($row->ip_addresses)) {
                    // multiple ip addresses must be separated using a comma, explode and loop
                    $list_ip_addresses = explode(',', $row->ip_addresses);
                    $found_address = FALSE;
                    foreach ($list_ip_addresses as $ip_address) {
                        if ($this->input->ip_address() === trim($ip_address)) {
                            // there is a match, set the the value to TRUE and break out of the loop
                            $found_address = TRUE;
                            break;
                        }
                    }
                    return $found_address;
                } else {
                    // There should be at least one IP address for this private key
                    return FALSE;
                }
            }
            return TRUE;
        }
        // No key has been sent
        return FALSE;
    }

 /**
  * Detect API Key
  *
  * See if the user has provided an API key
  *
  * @return boolean
  */
 protected function _detect_api_key()
 {
     log_message('debug', 'debug DETECTING API KEY');
     $ret = FALSE;
     $ret = parent::_detect_api_key();
     if ($ret === FALSE) {
         $this->rest->key = $this->input->ip_address();
     }
     return true;
 }