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-rw-r--r--plugins/FBConnect/FBConnectAuth.php370
1 files changed, 370 insertions, 0 deletions
diff --git a/plugins/FBConnect/FBConnectAuth.php b/plugins/FBConnect/FBConnectAuth.php
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+<?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/
+ */
+
+require_once INSTALLDIR . '/plugins/FBConnect/FBConnectPlugin.php';
+
+class FbconnectauthAction extends Action
+{
+
+ var $fbuid = null;
+ var $fb_fields = null;
+
+ function prepare($args) {
+ parent::prepare($args);
+
+ $this->fbuid = getFacebook()->get_loggedin_user();
+ $this->fb_fields = $this->getFacebookFields($this->fbuid,
+ array('first_name', 'last_name', 'name'));
+
+ return true;
+ }
+
+ function handle($args)
+ {
+ parent::handle($args);
+
+ if (common_is_real_login()) {
+ $this->clientError(_('Already logged in.'));
+ } else if ($_SERVER['REQUEST_METHOD'] == 'POST') {
+ $token = $this->trimmed('token');
+ if (!$token || $token != common_session_token()) {
+ $this->showForm(_('There was a problem with your session token. Try again, please.'));
+ return;
+ }
+ if ($this->arg('create')) {
+ if (!$this->boolean('license')) {
+ $this->showForm(_('You can\'t register if you don\'t agree to the license.'),
+ $this->trimmed('newname'));
+ return;
+ }
+ $this->createNewUser();
+ } else if ($this->arg('connect')) {
+ $this->connectUser();
+ } else {
+ common_debug(print_r($this->args, true), __FILE__);
+ $this->showForm(_('Something weird happened.'),
+ $this->trimmed('newname'));
+ }
+ } else {
+ $this->tryLogin();
+ }
+ }
+
+ function showPageNotice()
+ {
+ if ($this->error) {
+ $this->element('div', array('class' => 'error'), $this->error);
+ } else {
+ $this->element('div', 'instructions',
+ sprintf(_('This is the first time you\'ve logged into %s so we must connect your Facebook to a local account. You can either create a new account, or connect with your existing account, if you have one.'), common_config('site', 'name')));
+ }
+ }
+
+ function title()
+ {
+ return _('Facebook Account Setup');
+ }
+
+ function showForm($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' => 'account_connect',
+ 'action' => common_local_url('fbconnectlogin')));
+ $this->hidden('token', common_session_token());
+ $this->element('h2', null,
+ _('Create new account'));
+ $this->element('p', null,
+ _('Create a new user with this nickname.'));
+ $this->input('newname', _('New nickname'),
+ ($this->username) ? $this->username : '',
+ _('1-64 lowercase letters or numbers, no punctuation or spaces'));
+ $this->elementStart('p');
+ $this->element('input', array('type' => 'checkbox',
+ 'id' => 'license',
+ 'name' => 'license',
+ 'value' => 'true'));
+ $this->text(_('My text and files are available under '));
+ $this->element('a', array('href' => common_config('license', 'url')),
+ common_config('license', 'title'));
+ $this->text(_(' except this private data: password, email address, IM address, phone number.'));
+ $this->elementEnd('p');
+ $this->submit('create', _('Create'));
+ $this->element('h2', null,
+ _('Connect existing account'));
+ $this->element('p', null,
+ _('If you already have an account, login with your username and password to connect it to your Facebook.'));
+ $this->input('nickname', _('Existing nickname'));
+ $this->password('password', _('Password'));
+ $this->submit('connect', _('Connect'));
+ $this->elementEnd('form');
+ }
+
+ function message($msg)
+ {
+ $this->message_text = $msg;
+ $this->showPage();
+ }
+
+ function createNewUser()
+ {
+
+ if (common_config('site', 'closed')) {
+ $this->clientError(_('Registration not allowed.'));
+ return;
+ }
+
+ $invite = null;
+
+ if (common_config('site', 'inviteonly')) {
+ $code = $_SESSION['invitecode'];
+ if (empty($code)) {
+ $this->clientError(_('Registration not allowed.'));
+ return;
+ }
+
+ $invite = Invitation::staticGet($code);
+
+ if (empty($invite)) {
+ $this->clientError(_('Not a valid invitation code.'));
+ return;
+ }
+ }
+
+ $nickname = $this->trimmed('newname');
+
+ if (!Validate::string($nickname, array('min_length' => 1,
+ 'max_length' => 64,
+ 'format' => VALIDATE_NUM . VALIDATE_ALPHA_LOWER))) {
+ $this->showForm(_('Nickname must have only lowercase letters and numbers and no spaces.'));
+ return;
+ }
+
+ if (!User::allowed_nickname($nickname)) {
+ $this->showForm(_('Nickname not allowed.'));
+ return;
+ }
+
+ if (User::staticGet('nickname', $nickname)) {
+ $this->showForm(_('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) {
+ $this->serverError(_('Error connecting user to Facebook.'));
+ return;
+ }
+
+ common_set_user($user);
+ common_real_login(true);
+
+ common_debug("Registered new user $user->id from Facebook user $this->fbuid");
+
+ common_redirect(common_local_url('showstream', array('nickname' => $user->nickname)),
+ 303);
+ }
+
+ function connectUser()
+ {
+ $nickname = $this->trimmed('nickname');
+ $password = $this->trimmed('password');
+
+ if (!common_check_user($nickname, $password)) {
+ $this->showForm(_('Invalid username or password.'));
+ return;
+ }
+
+ $user = User::staticGet('nickname', $nickname);
+
+ if ($user) {
+ common_debug("Legit user to connect to Facebook: $nickname");
+ }
+
+ $result = $this->flinkUser($user->id, $this->fbuid);
+
+ if (!$result) {
+ $this->serverError(_('Error connecting user to Facebook.'));
+ return;
+ }
+
+ common_debug("Connected Facebook user $this->fbuid to local user $user->id");
+
+ common_set_user($user);
+ common_real_login(true);
+
+ $this->goHome($user->nickname);
+ }
+
+ function tryLogin()
+ {
+ common_debug("Trying Facebook Login...");
+
+ $flink = Foreign_link::getByForeignID($this->fbuid, FACEBOOK_SERVICE);
+
+ if ($flink) {
+ $user = $flink->getUser();
+
+ if ($user) {
+
+ common_debug("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 {
+ $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_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' => VALIDATE_NUM . VALIDATE_ALPHA_LOWER))) {
+ 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 {
+ $infos = getFacebook()->api_client->users_getInfo($fb_uid, $fields);
+
+ if (empty($infos)) {
+ return null;
+ }
+ return reset($infos);
+
+ } catch (Exception $e) {
+ error_log("Failure in the api when requesting " . join(",", $fields)
+ ." on uid " . $fb_uid . " : ". $e->getMessage());
+ return null;
+ }
+ }
+
+}
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