forked from GNUsocial/gnu-social
155 lines
4.9 KiB
PHP
155 lines
4.9 KiB
PHP
<?php
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/**
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* Laconica, the distributed open-source microblogging tool
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*
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* Class for doing OAuth authentication against Twitter
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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 TwitterauthorizationAction
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* @package Laconica
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* @author Zach Copely <zach@controlyourself.ca>
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* @copyright 2009 Control Yourself, 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://laconi.ca/
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*/
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if (!defined('LACONICA')) {
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exit(1);
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}
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class TwitterauthorizationAction extends Action
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{
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function prepare($args)
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{
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parent::prepare($args);
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$this->oauth_token = $this->arg('oauth_token');
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return true;
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}
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function handle($args)
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{
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parent::handle($args);
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if (!common_logged_in()) {
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$this->clientError(_('Not logged in.'), 403);
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}
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$user = common_current_user();
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$flink = Foreign_link::getByUserID($user->id, TWITTER_SERVICE);
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// If there's already a foreign link record, it means we already
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// have an access token, and this is unecessary. So go back.
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if (isset($flink)) {
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common_redirect(common_local_url('twittersettings'));
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}
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// $this->oauth_token is only populated once Twitter authorizes our
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// request token. If it's empty we're at the beginning of the auth
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// process
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if (empty($this->oauth_token)) {
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try {
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// Get a new request token and authorize it
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$client = new TwitterOAuthClient();
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$req_tok = $client->getRequestToken();
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// Sock the request token away in the session temporarily
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$_SESSION['twitter_request_token'] = $req_tok->key;
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$_SESSION['twitter_request_token_secret'] = $req_tok->key;
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$auth_link = $client->getAuthorizeLink($req_tok);
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} catch (TwitterOAuthClientException $e) {
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$msg = sprintf('OAuth client cURL error - code: %1s, msg: %2s',
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$e->getCode(), $e->getMessage());
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$this->serverError(_('Couldn\'t link your Twitter account.'));
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}
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common_redirect($auth_link);
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} else {
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// Check to make sure Twitter returned the same request
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// token we sent them
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if ($_SESSION['twitter_request_token'] != $this->oauth_token) {
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$this->serverError(_('Couldn\'t link your Twitter account.'));
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}
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try {
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$client = new TwitterOAuthClient($_SESSION['twitter_request_token'],
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$_SESSION['twitter_request_token_secret']);
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// Exchange the request token for an access token
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$atok = $client->getAccessToken();
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// Save the access token and Twitter user info
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$client = new TwitterOAuthClient($atok->key, $atok->secret);
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$twitter_user = $client->verify_credentials();
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} catch (OAuthClientException $e) {
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$msg = sprintf('OAuth client cURL error - code: %1s, msg: %2s',
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$e->getCode(), $e->getMessage());
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$this->serverError(_('Couldn\'t link your Twitter account.'));
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}
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$user = common_current_user();
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$flink = new Foreign_link();
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$flink->user_id = $user->id;
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$flink->foreign_id = $twitter_user->id;
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$flink->service = TWITTER_SERVICE;
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$flink->token = $atok->key;
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$flink->credentials = $atok->secret;
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$flink->created = common_sql_now();
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$flink->set_flags(true, false, false, false);
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$flink_id = $flink->insert();
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if (empty($flink_id)) {
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common_log_db_error($flink, 'INSERT', __FILE__);
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$this->serverError(_('Couldn\'t link your Twitter account.'));
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}
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save_twitter_user($twitter_user->id, $twitter_user->screen_name);
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// clean up the the mess we made in the session
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unset($_SESSION['twitter_request_token']);
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unset($_SESSION['twitter_request_token_secret']);
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common_redirect(common_local_url('twittersettings'));
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}
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}
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}
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