public function get_address_sources($writeable = false, $skip_hidden = false)
    {
        $abook_type   = (string) $this->config->get('address_book_type');
        $ldap_config  = (array) $this->config->get('ldap_public');
        $autocomplete = (array) $this->config->get('autocomplete_addressbooks');
        $list         = array();

        // We are using the DB address book or a plugin address book
        if (!empty($abook_type) && strtolower($abook_type) != 'ldap') {
            if (!isset($this->address_books['0'])) {
                $this->address_books['0'] = new rcube_contacts($this->db, $this->get_user_id());
            }

            $list['0'] = array(
                'id'       => '0',
                'name'     => $this->gettext('personaladrbook'),
                'groups'   => $this->address_books['0']->groups,
                'readonly' => $this->address_books['0']->readonly,
                'undelete' => $this->address_books['0']->undelete && $this->config->get('undo_timeout'),
                'autocomplete' => in_array('sql', $autocomplete),
            );
        }

        if (!empty($ldap_config)) {
            foreach ($ldap_config as $id => $prop) {
                // handle misconfiguration
                if (empty($prop) || !is_array($prop)) {
                    continue;
                }

                $list[$id] = array(
                    'id'       => $id,
                    'name'     => html::quote($prop['name']),
                    'groups'   => !empty($prop['groups']) || !empty($prop['group_filters']),
                    'readonly' => !$prop['writable'],
                    'hidden'   => $prop['hidden'],
                    'autocomplete' => in_array($id, $autocomplete)
                );
            }
        }

        $plugin = $this->plugins->exec_hook('addressbooks_list', array('sources' => $list));
        $list   = $plugin['sources'];

        foreach ($list as $idx => $item) {
            // register source for shutdown function
            if (!is_object($this->address_books[$item['id']])) {
                $this->address_books[$item['id']] = $item;
            }
            // remove from list if not writeable as requested
            if ($writeable && $item['readonly']) {
                unset($list[$idx]);
            }
            // remove from list if hidden as requested
            else if ($skip_hidden && $item['hidden']) {
                unset($list[$idx]);
            }
        }

        return $list;
    }