gnu-social/plugins/FBConnect/FBConnectPlugin.php

<?php
/**
 * Laconica, the distributed open-source microblogging tool
 *
 * Plugin to enable Facebook Connect
 *
 * PHP version 5
 *
 * LICENCE: 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/>.
 *
 * @category  Plugin
 * @package   Laconica
 * @author    Zach Copley <zach@controlyourself.ca>
 * @copyright 2009 Control Yourself, Inc.
 * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
 * @link      http://laconi.ca/
 */

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

define("FACEBOOK_CONNECT_SERVICE", 3);

require_once INSTALLDIR . '/lib/facebookutil.php';
require_once INSTALLDIR . '/plugins/FBConnect/FBConnectAuth.php';
require_once INSTALLDIR . '/plugins/FBConnect/FBConnectLogin.php';
require_once INSTALLDIR . '/plugins/FBConnect/FBConnectSettings.php';
require_once INSTALLDIR . '/plugins/FBConnect/FBCLoginGroupNav.php';
require_once INSTALLDIR . '/plugins/FBConnect/FBCSettingsNav.php';

/**
 * Plugin to enable Facebook Connect
 *
 * @category Plugin
 * @package  Laconica
 * @author   Zach Copley <zach@controlyourself.ca>
 * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
 * @link     http://laconi.ca/
 */

class FBConnectPlugin extends Plugin
{
    function __construct()
    {
        parent::__construct();
    }

    // Hook in new actions
    function onRouterInitialized(&$m) {
        $m->connect('main/facebookconnect', array('action' => 'FBConnectAuth'));
        $m->connect('main/facebooklogin', array('action' => 'FBConnectLogin'));
        $m->connect('settings/facebook', array('action' => 'FBConnectSettings'));
     }

    // Add in xmlns:fb
    function onStartShowHTML($action)
    {
        $httpaccept = isset($_SERVER['HTTP_ACCEPT']) ?
        $_SERVER['HTTP_ACCEPT'] : null;

        // XXX: allow content negotiation for RDF, RSS, or XRDS

        $cp = common_accept_to_prefs($httpaccept);
        $sp = common_accept_to_prefs(PAGE_TYPE_PREFS);

        $type = common_negotiate_type($cp, $sp);

        if (!$type) {
            throw new ClientException(_('This page is not available in a '.
                                         'media type you accept'), 406);
        }

        header('Content-Type: '.$type);

        $action->extraHeaders();

        $action->startXML('html',
            '-//W3C//DTD XHTML 1.0 Strict//EN',
            'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');

        $language = $action->getLanguage();

        $action->elementStart('html',
            array('xmlns'  => 'http://www.w3.org/1999/xhtml',
                  'xmlns:fb' => 'http://www.facebook.com/2008/fbml',
                  'xml:lang' => $language,
                  'lang'     => $language));

        return false;
    }

    function onEndShowLaconicaScripts($action)
    {
        $action->element('script',
            array('type' => 'text/javascript',
                  'src'  => 'http://static.ak.connect.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php'),
                  ' ');

        $apikey = common_config('facebook', 'apikey');
        $plugin_path = common_path('plugins/FBConnect');

        $login_url = common_local_url('FBConnectAuth');
        $logout_url = common_local_url('logout');

        $html = sprintf('<script type="text/javascript">FB.init("%s", "%s/xd_receiver.htm");

                            function goto_login() {
                                window.location = "%s";
                            }

                            function goto_logout() {
                                window.location = "%s";
                            }

                         </script>', $apikey, $plugin_path, $login_url, $logout_url);


        $action->raw($html);
    }

    function onEndShowLaconicaStyles($action)
    {
        $action->element('link', array('rel' => 'stylesheet',
            'type' => 'text/css',
            'href' => common_path('plugins/FBConnect/FBConnectPlugin.css')));
    }

    function onStartPrimaryNav($action)
    {
        $user = common_current_user();

        if ($user) {

            $action->menuItem(common_local_url('all', array('nickname' => $user->nickname)),
                _('Home'), _('Personal profile and friends timeline'), false, 'nav_home');
            $action->menuItem(common_local_url('profilesettings'),
                _('Account'), _('Change your email, avatar, password, profile'), false, 'nav_account');
            if (common_config('xmpp', 'enabled')) {
                $action->menuItem(common_local_url('imsettings'),
                    _('Connect'), _('Connect to IM, SMS, Twitter'), false, 'nav_connect');
            } else {
             $action->menuItem(common_local_url('smssettings'),
                 _('Connect'), _('Connect to SMS, Twitter'), false, 'nav_connect');
            }
            $action->menuItem(common_local_url('invite'),
                _('Invite'),
                sprintf(_('Invite friends and colleagues to join you on %s'),
                common_config('site', 'name')),
                false, 'nav_invitecontact');

            $flink = Foreign_link::getByUserId($user->id, FACEBOOK_CONNECT_SERVICE);
            $fbuid = 0;

            if ($flink) {

                try {

                    $facebook = getFacebook();
                    $fbuid = getFacebook()->get_loggedin_user();

                } catch (Exception $e) {
                    common_log(LOG_WARNING,
                        'Problem getting Facebook client: ' .
                            $e->getMessage());
                }

                // Display Facebook Logged in indicator w/Facebook favicon

                if ($fbuid > 0) {

                    $action->elementStart('li', array('id' => 'nav_fb'));
                    $action->elementStart('fb:profile-pic', array('uid' => $flink->foreign_id,
                        'linked' => 'false',
                        'width' => 16,
                        'height' => 16));
                    $action->elementEnd('fb:profile-pic');

                    $iconurl =  common_path('/plugins/FBConnect/fbfavicon.ico');
                    $action->element('img', array('src' => $iconurl));

                    $action->elementEnd('li');

                }
            }

            // Need to override the Logout link to make it do FB stuff

            if ($fbuid > 0) {

                $logout_url = common_local_url('logout');
                $title =  _('Logout from the site');
                $text = _('Logout');

                $html = sprintf('<li id="nav_logout"><a href="%s" title="%s" ' .
                    'onclick="FB.Connect.logout(function() { goto_logout() })">%s</a></li>',
                    $logout_url, $title, $text);

                $action->raw($html);

             } else {
                 $action->menuItem(common_local_url('logout'),
                     _('Logout'), _('Logout from the site'), false, 'nav_logout');
             }
         }
         else {
             if (!common_config('site', 'closed')) {
                 $action->menuItem(common_local_url('register'),
                     _('Register'), _('Create an account'), false, 'nav_register');
             }
             $action->menuItem(common_local_url('openidlogin'),
                 _('OpenID'), _('Login with OpenID'), false, 'nav_openid');
             $action->menuItem(common_local_url('login'),
                 _('Login'), _('Login to the site'), false, 'nav_login');
         }

         $action->menuItem(common_local_url('doc', array('title' => 'help')),
             _('Help'), _('Help me!'), false, 'nav_help');
         $action->menuItem(common_local_url('peoplesearch'),
             _('Search'), _('Search for people or text'), false, 'nav_search');

        return false;
    }

    function onStartShowLocalNavBlock($action)
    {
        $action_name = get_class($action);

        $login_actions = array('LoginAction', 'RegisterAction',
            'OpenidloginAction', 'FBConnectLoginAction');

        if (in_array($action_name, $login_actions)) {
            $nav = new FBCLoginGroupNav($action);
            $nav->show();
            return false;
        }

        $connect_actions = array('SmssettingsAction',
            'TwittersettingsAction', 'FBConnectSettingsAction');

        if (in_array($action_name, $connect_actions)) {
            $nav = new FBCSettingsNav($action);
            $nav->show();
            return false;
        }

        return true;
    }

    function onEndLogout($action)
    {
        try {

            $facebook = getFacebook();
            $fbuid = $facebook->get_loggedin_user();

            if ($fbuid > 0) {
                $facebook->logout(common_local_url('public'));
            }

        } catch (Exception $e) {
            common_log(LOG_WARNING, 'Could\'t logout of Facebook: ' .
                $e->getMessage());
        }
    }

}