forked from GNUsocial/gnu-social
		
	
		
			
				
	
	
		
			404 lines
		
	
	
		
			13 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			404 lines
		
	
	
		
			13 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/**
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 * StatusNet, the distributed open-source microblogging tool
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 *
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 * Plugin to enable Facebook Connect
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 *
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 * PHP version 5
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 *
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 * LICENCE: This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU Affero General Public License as published by
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 * the Free Software Foundation, either version 3 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU Affero General Public License for more details.
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 *
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 * You should have received a copy of the GNU Affero General Public License
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 *
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 * @category  Plugin
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 * @package   StatusNet
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 * @author    Zach Copley <zach@status.net>
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 * @copyright 2009 StatusNet, Inc.
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 * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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 * @link      http://status.net/
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 */
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if (!defined('STATUSNET') && !defined('LACONICA')) {
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    exit(1);
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}
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define("FACEBOOK_CONNECT_SERVICE", 3);
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require_once INSTALLDIR . '/lib/facebookutil.php';
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require_once INSTALLDIR . '/plugins/FBConnect/FBConnectAuth.php';
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require_once INSTALLDIR . '/plugins/FBConnect/FBConnectLogin.php';
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require_once INSTALLDIR . '/plugins/FBConnect/FBConnectSettings.php';
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require_once INSTALLDIR . '/plugins/FBConnect/FBCLoginGroupNav.php';
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require_once INSTALLDIR . '/plugins/FBConnect/FBCSettingsNav.php';
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require_once INSTALLDIR . '/plugins/FBConnect/FBC_XDReceiver.php';
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/**
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 * Plugin to enable Facebook Connect
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 *
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 * @category Plugin
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 * @package  StatusNet
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 * @author   Zach Copley <zach@status.net>
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 * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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 * @link     http://status.net/
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 */
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class FBConnectPlugin extends Plugin
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{
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    function __construct()
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    {
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        parent::__construct();
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    }
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    // Hook in new actions
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    function onRouterInitialized(&$m) {
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        $m->connect('main/facebookconnect', array('action' => 'FBConnectAuth'));
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        $m->connect('main/facebooklogin', array('action' => 'FBConnectLogin'));
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        $m->connect('settings/facebook', array('action' => 'FBConnectSettings'));
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        $m->connect('xd_receiver.html', array('action' => 'FBC_XDReceiver'));
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     }
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    // Add in xmlns:fb
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    function onStartShowHTML($action)
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    {
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        if ($this->reqFbScripts($action)) {
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            // XXX: Horrible hack to make Safari, FF2, and Chrome work with
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            // Facebook Connect. These browser cannot use Facebook's
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            // DOM parsing routines unless the mime type of the page is
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            // text/html even though Facebook Connect uses XHTML.  This is
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            // A bug in Facebook Connect, and this is a temporary solution
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            // until they fix their JavaScript libs.
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            header('Content-Type: text/html');
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            $action->extraHeaders();
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            $action->startXML('html');
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            $language = $action->getLanguage();
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            $action->elementStart('html',
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                array('xmlns'  => 'http://www.w3.org/1999/xhtml',
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                      'xmlns:fb' => 'http://www.facebook.com/2008/fbml',
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                      'xml:lang' => $language,
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                      'lang'     => $language));
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            return false;
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        } else {
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            return true;
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        }
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    }
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    // Note: this script needs to appear in the <body>
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    function onStartShowHeader($action)
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    {
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        if ($this->reqFbScripts($action)) {
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            $apikey = common_config('facebook', 'apikey');
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            $plugin_path = common_path('plugins/FBConnect');
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            $login_url = common_local_url('FBConnectAuth');
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            $logout_url = common_local_url('logout');
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            // XXX: Facebook says we don't need this FB_RequireFeatures(),
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            // but we actually do, for IE and Safari. Gar.
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            $html = sprintf('<script type="text/javascript">
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                                $(document).ready(function () {
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                                    FB_RequireFeatures(
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                                        ["XFBML"],
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                                            function() {
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                                                FB.init("%s", "../xd_receiver.html");
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                                            }
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                                        ); });
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                                function goto_login() {
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                                    window.location = "%s";
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                                }
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                                function goto_logout() {
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                                    window.location = "%s";
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                                }
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                              </script>', $apikey,
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                                  $login_url, $logout_url);
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            $action->raw($html);
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        }
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    }
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    // Note: this script needs to appear as close as possible to </body>
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    function onEndShowFooter($action)
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    {
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        if ($this->reqFbScripts($action)) {
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            $action->script('http://static.ak.connect.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php');
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        }
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    }
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    function onEndShowStatusNetStyles($action)
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    {
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        if ($this->reqFbScripts($action)) {
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            $action->cssLink('plugins/FBConnect/FBConnectPlugin.css');
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        }
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    }
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    /**
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     * Does the Action we're plugged into require the FB Scripts?  We only
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     * want to output FB namespace, scripts, CSS, etc. on the pages that
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     * really need them.
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     *
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     * @param Action the action in question
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     *
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     * @return boolean true
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     */
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    function reqFbScripts($action) {
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        // If you're logged in w/FB Connect, you always need the FB stuff
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        $fbuid = $this->loggedIn();
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        if (!empty($fbuid)) {
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            return true;
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        }
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        // List of actions that require FB stuff
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        $needy = array('FBConnectLoginAction',
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                       'FBConnectauthAction',
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                       'FBConnectSettingsAction');
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        if (in_array(get_class($action), $needy)) {
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            return true;
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        }
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        return false;
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    }
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    /**
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     * Is the user currently logged in with FB Connect?
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     *
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     * @return mixed $fbuid the Facebook ID of the logged in user, or null
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     */
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    function loggedIn()
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    {
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        $user = common_current_user();
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        if (!empty($user)) {
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            $flink = Foreign_link::getByUserId($user->id,
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                FACEBOOK_CONNECT_SERVICE);
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            $fbuid = 0;
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            if (!empty($flink)) {
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                try {
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                    $facebook = getFacebook();
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                    $fbuid    = $facebook->get_loggedin_user();
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                } catch (Exception $e) {
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                    common_log(LOG_WARNING, 'Facebook Connect Plugin - ' .
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                        'Problem getting Facebook user: ' .
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                            $e->getMessage());
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                }
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                if ($fbuid > 0) {
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                    return $fbuid;
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                }
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            }
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        }
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        return null;
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    }
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    function onStartPrimaryNav($action)
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    {
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        $user = common_current_user();
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        $connect = 'FBConnectSettings';
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        if (common_config('xmpp', 'enabled')) {
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            $connect = 'imsettings';
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        } else if (common_config('sms', 'enabled')) {
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            $connect = 'smssettings';
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        } else if (common_config('twitter', 'enabled')) {
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            $connect = 'twittersettings';
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        }
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        if (!empty($user)) {
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            $fbuid = $this->loggedIn();
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            if (!empty($fbuid)) {
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                /* Default FB silhouette pic for FB users who haven't
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                   uploaded a profile pic yet. */
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                $silhouetteUrl =
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                    'http://static.ak.fbcdn.net/pics/q_silhouette.gif';
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                $url = $this->getProfilePicURL($fbuid);
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                $action->elementStart('li', array('id' => 'nav_fb'));
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                $action->element('img', array('id' => 'fbc_profile-pic',
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                    'src' => (!empty($url)) ? $url : $silhouetteUrl,
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                    'alt' => 'Facebook Connect User',
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                    'width' => '16'), '');
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                $iconurl =  common_path('plugins/FBConnect/fbfavicon.ico');
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                $action->element('img', array('id' => 'fb_favicon',
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                    'src' => $iconurl));
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                $action->elementEnd('li');
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            }
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            $action->menuItem(common_local_url('all', array('nickname' => $user->nickname)),
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                _('Home'), _('Personal profile and friends timeline'), false, 'nav_home');
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            $action->menuItem(common_local_url('profilesettings'),
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                _('Account'), _('Change your email, avatar, password, profile'), false, 'nav_account');
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            $action->menuItem(common_local_url($connect),
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                _('Connect'), _('Connect to services'), false, 'nav_connect');
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            if (common_config('invite', 'enabled')) {
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                $action->menuItem(common_local_url('invite'),
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                    _('Invite'),
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                    sprintf(_('Invite friends and colleagues to join you on %s'),
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                    common_config('site', 'name')),
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                    false, 'nav_invitecontact');
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            }
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            // Need to override the Logout link to make it do FB stuff
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            if (!empty($fbuid)) {
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                $logout_url = common_local_url('logout');
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                $title =  _('Logout from the site');
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                $text = _('Logout');
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                $html = sprintf('<li id="nav_logout"><a href="#" title="%s" ' .
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                    'onclick="FB.Connect.logoutAndRedirect(\'%s\');">%s</a></li>',
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                    $title, $logout_url, $text);
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                $action->raw($html);
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             } else {
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                 $action->menuItem(common_local_url('logout'),
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                     _('Logout'), _('Logout from the site'), false, 'nav_logout');
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             }
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         }
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         else {
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             if (!common_config('site', 'openidonly')) {
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                 if (!common_config('site', 'closed')) {
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                     $action->menuItem(common_local_url('register'),
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                         _('Register'), _('Create an account'), false, 'nav_register');
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                 }
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                 $action->menuItem(common_local_url('login'),
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                     _('Login'), _('Login to the site'), false, 'nav_login');
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             } else {
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                 $this->menuItem(common_local_url('openidlogin'),
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                                 _('OpenID'), _('Login with OpenID'), false, 'nav_openid');
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             }
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         }
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         $action->menuItem(common_local_url('doc', array('title' => 'help')),
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             _('Help'), _('Help me!'), false, 'nav_help');
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         if ($user || !common_config('site', 'private')) {
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             $action->menuItem(common_local_url('peoplesearch'),
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                 _('Search'), _('Search for people or text'), false, 'nav_search');
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         }
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        // We are replacing the primary nav entirely; give other
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        // plugins a chance to handle it here.
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        Event::handle('EndPrimaryNav', array($action));
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        return false;
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    }
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    function onStartShowLocalNavBlock($action)
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    {
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        $action_name   = get_class($action);
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        $login_actions = array('LoginAction', 'RegisterAction',
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            'OpenidloginAction', 'FBConnectLoginAction');
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        if (in_array($action_name, $login_actions)) {
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            $nav = new FBCLoginGroupNav($action);
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            $nav->show();
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            return false;
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        }
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        $connect_actions = array('SmssettingsAction', 'ImsettingsAction',
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            'TwittersettingsAction', 'FBConnectSettingsAction');
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        if (in_array($action_name, $connect_actions)) {
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            $nav = new FBCSettingsNav($action);
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            $nav->show();
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            return false;
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        }
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        return true;
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    }
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    function onStartLogout($action)
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{
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        $action->logout();
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        $fbuid = $this->loggedIn();
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        if (!empty($fbuid)) {
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            try {
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                $facebook = getFacebook();
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                $facebook->expire_session();
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            } catch (Exception $e) {
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                common_log(LOG_WARNING, 'Facebook Connect Plugin - ' .
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                           'Could\'t logout of Facebook: ' .
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                           $e->getMessage());
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            }
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        }
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        return true;
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    }
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    function getProfilePicURL($fbuid)
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    {
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        $facebook = getFacebook();
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        $url      = null;
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        try {
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            $fqry = 'SELECT pic_square FROM user WHERE uid = %s';
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            $result = $facebook->api_client->fql_query(sprintf($fqry, $fbuid));
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            if (!empty($result)) {
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                $url = $result[0]['pic_square'];
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            }
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        } catch (Exception $e) {
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            common_log(LOG_WARNING, 'Facebook Connect Plugin - ' .
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                       "Facebook client failure requesting profile pic!");
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        }
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       return $url;
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    }
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}
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