forked from GNUsocial/gnu-social
618 lines
20 KiB
PHP
618 lines
20 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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* Login or register a local user based on a Facebook user
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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 2010-2011 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')) {
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exit(1);
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}
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class FacebookfinishloginAction extends Action
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{
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private $fbuid = null; // Facebook user ID
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private $fbuser = null; // Facebook user object (JSON)
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private $accessToken = null; // Access token provided by Facebook JS API
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function prepare($args) {
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parent::prepare($args);
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// Check cookie for a valid access_token
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if (isset($_COOKIE['fb_access_token'])) {
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$this->accessToken = $_COOKIE['fb_access_token'];
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}
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if (empty($this->accessToken)) {
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$this->clientError(_m("Unable to authenticate you with Facebook."));
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}
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$graphUrl = 'https://graph.facebook.com/me?access_token=' . urlencode($this->accessToken);
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$this->fbuser = json_decode(file_get_contents($graphUrl));
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if (empty($this->fbuser)) {
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// log badness
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list($proxy, $ip) = common_client_ip();
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common_log(
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LOG_WARNING,
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sprintf(
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'Failed Facebook authentication attempt, proxy = %s, ip = %s.',
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$proxy,
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$ip
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),
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__FILE__
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);
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$this->clientError(
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// TRANS: Client error displayed when trying to connect to Facebook while not logged in.
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_m('You must be logged into Facebook to register a local account using Facebook.')
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);
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}
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$this->fbuid = $this->fbuser->id;
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// OKAY, all is well... proceed to register
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return true;
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}
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function handle($args)
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{
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parent::handle($args);
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if (common_is_real_login()) {
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// This will throw a client exception if the user already
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// has some sort of foreign_link to Facebook.
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$this->checkForExistingLink();
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// Possibly reconnect an existing account
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$this->connectUser();
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} else if ($_SERVER['REQUEST_METHOD'] == 'POST') {
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$this->handlePost();
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} else {
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$this->tryLogin();
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}
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}
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function checkForExistingLink() {
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// User is already logged in, are her accounts already linked?
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$flink = Foreign_link::getByForeignID($this->fbuid, FACEBOOK_SERVICE);
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if (!empty($flink)) {
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// User already has a linked Facebook account and shouldn't be here!
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$this->clientError(
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// TRANS: Client error displayed when trying to connect to a Facebook account that is already linked
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// TRANS: in the same StatusNet site.
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_m('There is already a local account linked with that Facebook account.')
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);
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}
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$cur = common_current_user();
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$flink = Foreign_link::getByUserID($cur->id, FACEBOOK_SERVICE);
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if (!empty($flink)) {
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// There's already a local user linked to this Facebook account.
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$this->clientError(
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// TRANS: Client error displayed when trying to connect to a Facebook account that is already linked
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// TRANS: in the same StatusNet site.
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_m('There is already a local account linked with that Facebook account.')
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);
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}
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}
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function handlePost()
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{
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$token = $this->trimmed('token');
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// CSRF protection
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if (!$token || $token != common_session_token()) {
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$this->showForm(
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// TRANS: Client error displayed when the session token does not match or is not given.
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_m('There was a problem with your session token. Try again, please.')
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);
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return;
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}
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if ($this->arg('create')) {
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if (!$this->boolean('license')) {
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$this->showForm(
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// TRANS: Form validation error displayed when user has not agreed to the license.
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_m('You cannot register if you do not agree to the license.'),
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$this->trimmed('newname')
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);
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return;
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}
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// We has a valid Facebook session and the Facebook user has
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// agreed to the SN license, so create a new user
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$this->createNewUser();
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} else if ($this->arg('connect')) {
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$this->connectNewUser();
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} else {
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$this->showForm(
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// TRANS: Form validation error displayed when an unhandled error occurs.
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_m('An unknown error has occured.'),
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$this->trimmed('newname')
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);
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}
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}
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function showPageNotice()
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{
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if ($this->error) {
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$this->element('div', array('class' => 'error'), $this->error);
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} else {
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$this->element(
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'div', 'instructions',
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sprintf(
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// TRANS: Form instructions for connecting to Facebook.
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// TRANS: %s is the site name.
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_m('This is the first time you have logged into %s so we must connect your Facebook to a local account. You can either create a new local account, or connect with an existing local account.'),
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common_config('site', 'name')
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)
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);
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}
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}
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function title()
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{
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// TRANS: Page title.
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return _m('Facebook Setup');
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}
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function showForm($error=null, $username=null)
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{
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$this->error = $error;
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$this->username = $username;
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$this->showPage();
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}
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function showPage()
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{
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parent::showPage();
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}
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/**
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* @todo FIXME: Much of this duplicates core code, which is very fragile.
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* Should probably be replaced with an extensible mini version of
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* the core registration form.
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*/
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function showContent()
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{
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if (!empty($this->message_text)) {
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$this->element('p', null, $this->message);
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return;
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}
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$this->elementStart('form', array('method' => 'post',
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'id' => 'form_settings_facebook_connect',
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'class' => 'form_settings',
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'action' => common_local_url('facebookfinishlogin')));
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$this->elementStart('fieldset', array('id' => 'settings_facebook_connect_options'));
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// TRANS: Fieldset legend.
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$this->element('legend', null, _m('Connection options'));
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$this->elementStart('ul', 'form_data');
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$this->elementStart('li');
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$this->element('input', array('type' => 'checkbox',
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'id' => 'license',
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'class' => 'checkbox',
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'name' => 'license',
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'value' => 'true'));
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$this->elementStart('label', array('class' => 'checkbox', 'for' => 'license'));
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// TRANS: %s is the name of the license used by the user for their status updates.
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$message = _m('My text and files are available under %s ' .
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'except this private data: password, ' .
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'email address, IM address, and phone number.');
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$link = '<a href="' .
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htmlspecialchars(common_config('license', 'url')) .
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'">' .
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htmlspecialchars(common_config('license', 'title')) .
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'</a>';
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$this->raw(sprintf(htmlspecialchars($message), $link));
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$this->elementEnd('label');
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$this->elementEnd('li');
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$this->elementEnd('ul');
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$this->elementStart('fieldset');
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$this->hidden('token', common_session_token());
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$this->element('legend', null,
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// TRANS: Fieldset legend.
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_m('Create new account'));
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$this->element('p', null,
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// TRANS: Form instructions.
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_m('Create a new user with this nickname.'));
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$this->elementStart('ul', 'form_data');
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// Hook point for captcha etc
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Event::handle('StartRegistrationFormData', array($this));
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$this->elementStart('li');
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// TRANS: Field label.
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$this->input('newname', _m('New nickname'),
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($this->username) ? $this->username : '',
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// TRANS: Field title.
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_m('1-64 lowercase letters or numbers, no punctuation or spaces.'));
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$this->elementEnd('li');
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// Hook point for captcha etc
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Event::handle('EndRegistrationFormData', array($this));
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$this->elementEnd('ul');
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// TRANS: Submit button to create a new account.
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$this->submit('create', _m('BUTTON','Create'));
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$this->elementEnd('fieldset');
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$this->elementStart('fieldset');
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$this->element('legend', null,
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// TRANS: Fieldset legend.
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_m('Connect existing account'));
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$this->element('p', null,
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// TRANS: Form instructions.
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_m('If you already have an account, login with your username and password to connect it to your Facebook.'));
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$this->elementStart('ul', 'form_data');
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$this->elementStart('li');
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// TRANS: Field label.
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$this->input('nickname', _m('Existing nickname'));
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$this->elementEnd('li');
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$this->elementStart('li');
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// TRANS: Field label.
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$this->password('password', _m('Password'));
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$this->elementEnd('li');
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$this->elementEnd('ul');
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// TRANS: Submit button to connect a Facebook account to an existing StatusNet account.
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$this->submit('connect', _m('BUTTON','Connect'));
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$this->elementEnd('fieldset');
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$this->elementEnd('fieldset');
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$this->elementEnd('form');
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}
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function message($msg)
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{
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$this->message_text = $msg;
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$this->showPage();
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}
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function createNewUser()
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{
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if (!Event::handle('StartRegistrationTry', array($this))) {
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return;
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}
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if (common_config('site', 'closed')) {
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// TRANS: Client error trying to register with registrations not allowed.
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$this->clientError(_m('Registration not allowed.'));
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}
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$invite = null;
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if (common_config('site', 'inviteonly')) {
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$code = $_SESSION['invitecode'];
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if (empty($code)) {
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// TRANS: Client error trying to register with registrations 'invite only'.
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$this->clientError(_m('Registration not allowed.'));
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}
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$invite = Invitation::getKV($code);
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if (empty($invite)) {
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// TRANS: Client error trying to register with an invalid invitation code.
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$this->clientError(_m('Not a valid invitation code.'));
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}
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}
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try {
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$nickname = Nickname::normalize($this->trimmed('newname'), true);
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} catch (NicknameException $e) {
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$this->showForm($e->getMessage());
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return;
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}
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$args = array(
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'nickname' => $nickname,
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'fullname' => $this->fbuser->name,
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'homepage' => $this->fbuser->website,
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'location' => $this->fbuser->location->name
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);
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// It's possible that the email address is already in our
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// DB. It's a unique key, so we need to check
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if ($this->isNewEmail($this->fbuser->email)) {
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$args['email'] = $this->fbuser->email;
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if (isset($this->fuser->verified) && $this->fuser->verified == true) {
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$args['email_confirmed'] = true;
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}
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}
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if (!empty($invite)) {
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$args['code'] = $invite->code;
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}
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$user = User::register($args);
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$result = $this->flinkUser($user->id, $this->fbuid);
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if (!$result) {
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// TRANS: Server error displayed when connecting to Facebook fails.
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$this->serverError(_m('Error connecting user to Facebook.'));
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}
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// Add a Foreign_user record
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Facebookclient::addFacebookUser($this->fbuser);
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$this->setAvatar($user);
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common_set_user($user);
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common_real_login(true);
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common_log(
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LOG_INFO,
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sprintf(
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'Registered new user %s (%d) from Facebook user %s, (fbuid %d)',
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$user->nickname,
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$user->id,
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$this->fbuser->name,
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$this->fbuid
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),
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__FILE__
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);
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Event::handle('EndRegistrationTry', array($this));
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$this->goHome($user->nickname);
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}
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/*
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* Attempt to download the user's Facebook picture and create a
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* StatusNet avatar for the new user.
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*/
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function setAvatar($user)
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{
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try {
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$picUrl = sprintf(
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'http://graph.facebook.com/%d/picture?type=large',
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$this->fbuser->id
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);
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// fetch the picture from Facebook
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$client = new HTTPClient();
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// fetch the actual picture
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$response = $client->get($picUrl);
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if ($response->isOk()) {
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// seems to always be jpeg, but not sure
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$tmpname = "facebook-avatar-tmp-" . common_random_hexstr(4);
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$ok = file_put_contents(
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Avatar::path($tmpname),
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$response->getBody()
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);
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if (!$ok) {
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common_log(LOG_WARNING, 'Couldn\'t save tmp Facebook avatar: ' . $tmpname, __FILE__);
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} else {
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// save it as an avatar
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$file = new ImageFile(null, Avatar::path($tmpname));
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$filename = $file->resize(180); // size of the biggest img we get from Facebook
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$profile = $user->getProfile();
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if ($profile->setOriginal($filename)) {
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common_log(
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LOG_INFO,
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sprintf(
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'Saved avatar for %s (%d) from Facebook picture for '
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. '%s (fbuid %d), filename = %s',
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$user->nickname,
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$user->id,
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$this->fbuser->name,
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$this->fbuid,
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$filename
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),
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__FILE__
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);
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// clean up tmp file
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@unlink(Avatar::path($tmpname));
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}
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}
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}
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} catch (Exception $e) {
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common_log(LOG_WARNING, 'Couldn\'t save Facebook avatar: ' . $e->getMessage(), __FILE__);
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// error isn't fatal, continue
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}
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}
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function connectNewUser()
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{
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$nickname = $this->trimmed('nickname');
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$password = $this->trimmed('password');
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if (!common_check_user($nickname, $password)) {
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// TRANS: Form validation error displayed when username/password combination is incorrect.
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$this->showForm(_m('Invalid username or password.'));
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return;
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}
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$user = User::getKV('nickname', $nickname);
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$this->tryLinkUser($user);
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common_set_user($user);
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common_real_login(true);
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// clear out the stupid cookie
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setcookie('fb_access_token', '', time() - 3600); // one hour ago
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$this->goHome($user->nickname);
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}
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function connectUser()
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{
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$user = common_current_user();
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$this->tryLinkUser($user);
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// clear out the stupid cookie
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setcookie('fb_access_token', '', time() - 3600); // one hour ago
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common_redirect(common_local_url('facebookfinishlogin'), 303);
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}
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function tryLinkUser($user)
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{
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$result = $this->flinkUser($user->id, $this->fbuid);
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if (empty($result)) {
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// TRANS: Server error displayed when connecting to Facebook fails.
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$this->serverError(_m('Error connecting user to Facebook.'));
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}
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}
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function tryLogin()
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{
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$flink = Foreign_link::getByForeignID($this->fbuid, FACEBOOK_SERVICE);
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if (!empty($flink)) {
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$user = $flink->getUser();
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if (!empty($user)) {
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common_log(
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LOG_INFO,
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sprintf(
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'Logged in Facebook user %s as user %d (%s)',
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$this->fbuid,
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$user->nickname,
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$user->id
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),
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__FILE__
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);
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common_set_user($user);
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common_real_login(true);
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// clear out the stupid cookie
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setcookie('fb_access_token', '', time() - 3600); // one hour ago
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$this->goHome($user->nickname);
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}
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} else {
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$this->showForm(null, $this->bestNewNickname());
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}
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}
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function goHome($nickname)
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{
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$url = common_get_returnto();
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if ($url) {
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// We don't have to return to it again
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common_set_returnto(null);
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} else {
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$url = common_local_url('all',
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array('nickname' =>
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$nickname));
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}
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common_redirect($url, 303);
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}
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function flinkUser($user_id, $fbuid)
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{
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$flink = new Foreign_link();
|
|
|
|
$flink->user_id = $user_id;
|
|
$flink->foreign_id = $fbuid;
|
|
$flink->service = FACEBOOK_SERVICE;
|
|
$flink->credentials = $this->accessToken;
|
|
$flink->created = common_sql_now();
|
|
|
|
$flink_id = $flink->insert();
|
|
|
|
return $flink_id;
|
|
}
|
|
|
|
function bestNewNickname()
|
|
{
|
|
try {
|
|
$nickname = Nickname::normalize($this->fbuser->username, true);
|
|
return $nickname;
|
|
} catch (NicknameException $e) {
|
|
// Failed to normalize nickname, but let's try the full name
|
|
}
|
|
|
|
try {
|
|
$nickname = Nickname::normalize($this->fbuser->name, true);
|
|
return $nickname;
|
|
} catch (NicknameException $e) {
|
|
// Any more ideas? Nope.
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/*
|
|
* Do we already have a user record with this email?
|
|
* (emails have to be unique but they can change)
|
|
*
|
|
* @param string $email the email address to check
|
|
*
|
|
* @return boolean result
|
|
*/
|
|
function isNewEmail($email)
|
|
{
|
|
// we shouldn't have to validate the format
|
|
$result = User::getKV('email', $email);
|
|
|
|
if (empty($result)) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|