<?php /** * StatusNet, 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 StatusNet * @author Zach Copley <zach@status.net> * @copyright 2009 StatusNet, Inc. * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0 * @link http://status.net/ */ require_once INSTALLDIR . '/plugins/Facebook/FacebookPlugin.php'; class FBConnectauthAction extends Action { var $fbuid = null; var $fb_fields = null; function prepare($args) { parent::prepare($args); $this->fbuid = getFacebook()->get_loggedin_user(); if ($this->fbuid > 0) { $this->fb_fields = $this->getFacebookFields($this->fbuid, array('first_name', 'last_name', 'name')); } else { list($proxy, $ip) = common_client_ip(); common_log(LOG_WARNING, 'Facebook Connect Plugin - ' . "Failed auth attempt, proxy = $proxy, ip = $ip."); $this->clientError(_m('You must be logged into Facebook to ' . 'use Facebook Connect.')); } return true; } function handle($args) { parent::handle($args); if (common_is_real_login()) { // User is already logged in. Does she already have a linked Facebook acct? $flink = Foreign_link::getByForeignID($this->fbuid, FACEBOOK_CONNECT_SERVICE); if (!empty($flink)) { // User already has a linked Facebook account and shouldn't be here common_debug('Facebook Connect Plugin - ' . 'There is already a local user (' . $flink->user_id . ') linked with this Facebook (' . $this->fbuid . ').'); // We don't want these cookies getFacebook()->clear_cookie_state(); $this->clientError(_m('There is already a local user linked with this Facebook.')); } else { // User came from the Facebook connect settings tab, and // probably just wants to link/relink their Facebook account $this->connectUser(); } } else if ($_SERVER['REQUEST_METHOD'] == 'POST') { $token = $this->trimmed('token'); if (!$token || $token != common_session_token()) { $this->showForm(_m('There was a problem with your session token. Try again, please.')); return; } if ($this->arg('create')) { if (!$this->boolean('license')) { $this->showForm(_m('You can\'t register if you don\'t agree to the license.'), $this->trimmed('newname')); return; } $this->createNewUser(); } else if ($this->arg('connect')) { $this->connectNewUser(); } else { common_debug('Facebook Connect Plugin - ' . print_r($this->args, true)); $this->showForm(_m('Something weird happened.'), $this->trimmed('newname')); } } else { $this->tryLogin(); } } function showPageNotice() { if ($this->error) { $this->element('div', array('class' => 'error'), $this->error); } else { $this->element('div', 'instructions', sprintf(_m('This is the first time you\'ve logged into %s so we must connect your Facebook to a local account. You can either create a new account, or connect with your existing account, if you have one.'), common_config('site', 'name'))); } } function title() { return _m('Facebook Account Setup'); } function showForm($error=null, $username=null) { $this->error = $error; $this->username = $username; $this->showPage(); } function showPage() { parent::showPage(); } function showContent() { if (!empty($this->message_text)) { $this->element('p', null, $this->message); return; } $this->elementStart('form', array('method' => 'post', 'id' => 'form_settings_facebook_connect', 'class' => 'form_settings', 'action' => common_local_url('FBConnectAuth'))); $this->elementStart('fieldset', array('id' => 'settings_facebook_connect_options')); $this->element('legend', null, _m('Connection options')); $this->elementStart('ul', 'form_data'); $this->elementStart('li'); $this->element('input', array('type' => 'checkbox', 'id' => 'license', 'class' => 'checkbox', 'name' => 'license', 'value' => 'true')); $this->elementStart('label', array('class' => 'checkbox', 'for' => 'license')); $this->text(_m('My text and files are available under ')); $this->element('a', array('href' => common_config('license', 'url')), common_config('license', 'title')); $this->text(_m(' except this private data: password, email address, IM address, phone number.')); $this->elementEnd('label'); $this->elementEnd('li'); $this->elementEnd('ul'); $this->elementStart('fieldset'); $this->hidden('token', common_session_token()); $this->element('legend', null, _m('Create new account')); $this->element('p', null, _m('Create a new user with this nickname.')); $this->elementStart('ul', 'form_data'); $this->elementStart('li'); $this->input('newname', _m('New nickname'), ($this->username) ? $this->username : '', _m('1-64 lowercase letters or numbers, no punctuation or spaces')); $this->elementEnd('li'); $this->elementEnd('ul'); $this->submit('create', _m('Create')); $this->elementEnd('fieldset'); $this->elementStart('fieldset'); $this->element('legend', null, _m('Connect existing account')); $this->element('p', null, _m('If you already have an account, login with your username and password to connect it to your Facebook.')); $this->elementStart('ul', 'form_data'); $this->elementStart('li'); $this->input('nickname', _m('Existing nickname')); $this->elementEnd('li'); $this->elementStart('li'); $this->password('password', _m('Password')); $this->elementEnd('li'); $this->elementEnd('ul'); $this->submit('connect', _m('Connect')); $this->elementEnd('fieldset'); $this->elementEnd('fieldset'); $this->elementEnd('form'); } function message($msg) { $this->message_text = $msg; $this->showPage(); } function createNewUser() { if (common_config('site', 'closed')) { $this->clientError(_m('Registration not allowed.')); return; } $invite = null; if (common_config('site', 'inviteonly')) { $code = $_SESSION['invitecode']; if (empty($code)) { $this->clientError(_m('Registration not allowed.')); return; } $invite = Invitation::staticGet($code); if (empty($invite)) { $this->clientError(_m('Not a valid invitation code.')); return; } } $nickname = $this->trimmed('newname'); if (!Validate::string($nickname, array('min_length' => 1, 'max_length' => 64, 'format' => NICKNAME_FMT))) { $this->showForm(_m('Nickname must have only lowercase letters and numbers and no spaces.')); return; } if (!User::allowed_nickname($nickname)) { $this->showForm(_m('Nickname not allowed.')); return; } if (User::staticGet('nickname', $nickname)) { $this->showForm(_m('Nickname already in use. Try another one.')); return; } $fullname = trim($this->fb_fields['firstname'] . ' ' . $this->fb_fields['lastname']); $args = array('nickname' => $nickname, 'fullname' => $fullname); if (!empty($invite)) { $args['code'] = $invite->code; } $user = User::register($args); $result = $this->flinkUser($user->id, $this->fbuid); if (!$result) { $this->serverError(_m('Error connecting user to Facebook.')); return; } common_set_user($user); common_real_login(true); common_debug('Facebook Connect Plugin - ' . "Registered new user $user->id from Facebook user $this->fbuid"); common_redirect(common_local_url('showstream', array('nickname' => $user->nickname)), 303); } function connectNewUser() { $nickname = $this->trimmed('nickname'); $password = $this->trimmed('password'); if (!common_check_user($nickname, $password)) { $this->showForm(_m('Invalid username or password.')); return; } $user = User::staticGet('nickname', $nickname); if (!empty($user)) { common_debug('Facebook Connect Plugin - ' . "Legit user to connect to Facebook: $nickname"); } $result = $this->flinkUser($user->id, $this->fbuid); if (!$result) { $this->serverError(_m('Error connecting user to Facebook.')); return; } common_debug('Facebook Connnect Plugin - ' . "Connected Facebook user $this->fbuid to local user $user->id"); common_set_user($user); common_real_login(true); $this->goHome($user->nickname); } function connectUser() { $user = common_current_user(); $result = $this->flinkUser($user->id, $this->fbuid); if (empty($result)) { $this->serverError(_m('Error connecting user to Facebook.')); return; } common_debug('Facebook Connect Plugin - ' . "Connected Facebook user $this->fbuid to local user $user->id"); // Return to Facebook connection settings tab common_redirect(common_local_url('FBConnectSettings'), 303); } function tryLogin() { common_debug('Facebook Connect Plugin - ' . "Trying login for Facebook user $this->fbuid."); $flink = Foreign_link::getByForeignID($this->fbuid, FACEBOOK_CONNECT_SERVICE); if (!empty($flink)) { $user = $flink->getUser(); if (!empty($user)) { common_debug('Facebook Connect Plugin - ' . "Logged in Facebook user $flink->foreign_id as user $user->id ($user->nickname)"); common_set_user($user); common_real_login(true); $this->goHome($user->nickname); } } else { common_debug('Facebook Connect Plugin - ' . "No flink found for fbuid: $this->fbuid - new user"); $this->showForm(null, $this->bestNewNickname()); } } function goHome($nickname) { $url = common_get_returnto(); if ($url) { // We don't have to return to it again common_set_returnto(null); } else { $url = common_local_url('all', array('nickname' => $nickname)); } common_redirect($url, 303); } function flinkUser($user_id, $fbuid) { $flink = new Foreign_link(); $flink->user_id = $user_id; $flink->foreign_id = $fbuid; $flink->service = FACEBOOK_CONNECT_SERVICE; $flink->created = common_sql_now(); $flink_id = $flink->insert(); return $flink_id; } function bestNewNickname() { if (!empty($this->fb_fields['name'])) { $nickname = $this->nicknamize($this->fb_fields['name']); if ($this->isNewNickname($nickname)) { return $nickname; } } // Try the full name $fullname = trim($this->fb_fields['firstname'] . ' ' . $this->fb_fields['lastname']); if (!empty($fullname)) { $fullname = $this->nicknamize($fullname); if ($this->isNewNickname($fullname)) { return $fullname; } } return null; } // Given a string, try to make it work as a nickname function nicknamize($str) { $str = preg_replace('/\W/', '', $str); return strtolower($str); } function isNewNickname($str) { if (!Validate::string($str, array('min_length' => 1, 'max_length' => 64, 'format' => NICKNAME_FMT))) { return false; } if (!User::allowed_nickname($str)) { return false; } if (User::staticGet('nickname', $str)) { return false; } return true; } // XXX: Consider moving this to lib/facebookutil.php function getFacebookFields($fb_uid, $fields) { try { $facebook = getFacebook(); $infos = $facebook->api_client->users_getInfo($fb_uid, $fields); if (empty($infos)) { return null; } return reset($infos); } catch (Exception $e) { common_log(LOG_WARNING, 'Facebook Connect Plugin - ' . "Facebook client failure when requesting " . join(",", $fields) . " on uid " . $fb_uid . " : ". $e->getMessage()); return null; } } }