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<?php
/*
 * Laconica - a distributed open-source microblogging tool
 * Copyright (C) 2008, Controlez-Vous, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

if (!defined('LACONICA')) { exit(1); }

require_once(INSTALLDIR.'/lib/openid.php');

class FinishaddopenidAction extends Action {

    function handle($args)
    {
        parent::handle($args);
        if (!common_logged_in()) {
            common_user_error(_('Not logged in.'));
        } else {
            $this->try_login();
        }
    }
    
    function try_login()
    {

        $consumer =& oid_consumer();

        $response = $consumer->complete(common_local_url('finishaddopenid'));

        if ($response->status == Auth_OpenID_CANCEL) {
            $this->message(_('OpenID authentication cancelled.'));
            return;
        } else if ($response->status == Auth_OpenID_FAILURE) {
            // Authentication failed; display the error message.
            $this->message(sprintf(_('OpenID authentication failed: %s'), $response->message));
        } else if ($response->status == Auth_OpenID_SUCCESS) {

            $display = $response->getDisplayIdentifier();
            $canonical = ($response->endpoint && $response->endpoint->canonicalID) ?
              $response->endpoint->canonicalID : $display;

            $sreg_resp = Auth_OpenID_SRegResponse::fromSuccessResponse($response);

            if ($sreg_resp) {
                $sreg = $sreg_resp->contents();
            }

            $cur =& common_current_user();
            $other = oid_get_user($canonical);

            if ($other) {
                if ($other->id == $cur->id) {
                    $this->message(_('You already have this OpenID!'));
                } else {
                    $this->message(_('Someone else already has this OpenID.'));
                }
                return;
            }

            # start a transaction

            $cur->query('BEGIN');

            $result = oid_link_user($cur->id, $canonical, $display);

            if (!$result) {
                $this->message(_('Error connecting user.'));
                return;
            }
            if ($sreg) {
                if (!oid_update_user($cur, $sreg)) {
                    $this->message(_('Error updating profile'));
                    return;
                }
            }

            # success!

            $cur->query('COMMIT');

            oid_set_last($display);

            common_redirect(common_local_url('openidsettings'));
        }
    }

    function message($msg)
    {
        common_show_header(_('OpenID Login'));
        common_element('p', null, $msg);
        common_show_footer();
    }
}