<?php /* * StatusNet - the distributed open-source microblogging tool * Copyright (C) 2008-2010 StatusNet, Inc. * * 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/>. */ if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); } define('TWITTER_SERVICE', 1); // Twitter is foreign_service ID 1 require_once INSTALLDIR . '/plugins/TwitterBridge/twitterbasicauthclient.php'; require_once INSTALLDIR . '/plugins/TwitterBridge/twitteroauthclient.php'; function add_twitter_user($twitter_id, $screen_name) { // Clear out any bad old foreign_users with the new user's legit URL // This can happen when users move around or fakester accounts get // repoed, and things like that. $luser = Foreign_user::getForeignUser($twitter_id, TWITTER_SERVICE); if (!empty($luser)) { $result = $luser->delete(); if ($result != false) { common_log( LOG_INFO, "Twitter bridge - removed old Twitter user: $screen_name ($twitter_id)." ); } } $fuser = new Foreign_user(); $fuser->nickname = $screen_name; $fuser->uri = 'http://twitter.com/' . $screen_name; $fuser->id = $twitter_id; $fuser->service = TWITTER_SERVICE; $fuser->created = common_sql_now(); $result = $fuser->insert(); if (empty($result)) { common_log(LOG_WARNING, "Twitter bridge - failed to add new Twitter user: $twitter_id - $screen_name."); common_log_db_error($fuser, 'INSERT', __FILE__); } else { common_log(LOG_INFO, "Twitter bridge - Added new Twitter user: $screen_name ($twitter_id)."); } return $result; } // Creates or Updates a Twitter user function save_twitter_user($twitter_id, $screen_name) { // Check to see whether the Twitter user is already in the system, // and update its screen name and uri if so. $fuser = Foreign_user::getForeignUser($twitter_id, TWITTER_SERVICE); if (!empty($fuser)) { $result = true; // Delete old record if Twitter user changed screen name if ($fuser->nickname != $screen_name) { $oldname = $fuser->nickname; $fuser->delete(); common_log(LOG_INFO, sprintf('Twitter bridge - Updated nickname (and URI) ' . 'for Twitter user %1$d - %2$s, was %3$s.', $fuser->id, $screen_name, $oldname)); } } return add_twitter_user($twitter_id, $screen_name); } function is_twitter_bound($notice, $flink) { // Check to see if notice should go to Twitter if (!empty($flink) && ($flink->noticesync & FOREIGN_NOTICE_SEND)) { // If it's not a Twitter-style reply, or if the user WANTS to send replies. if (!preg_match('/^@[a-zA-Z0-9_]{1,15}\b/u', $notice->content) || ($flink->noticesync & FOREIGN_NOTICE_SEND_REPLY)) { return true; } } return false; } function broadcast_twitter($notice) { $flink = Foreign_link::getByUserID($notice->profile_id, TWITTER_SERVICE); if (is_twitter_bound($notice, $flink)) { if (TwitterOAuthClient::isPackedToken($flink->credentials)) { return broadcast_oauth($notice, $flink); } else { return broadcast_basicauth($notice, $flink); } } return true; } function broadcast_oauth($notice, $flink) { $user = $flink->getUser(); $statustxt = format_status($notice); $token = TwitterOAuthClient::unpackToken($flink->credentials); $client = new TwitterOAuthClient($token->key, $token->secret); $status = null; try { $status = $client->statusesUpdate($statustxt); } catch (OAuthClientException $e) { return process_error($e, $flink, $notice); } if (empty($status)) { // This could represent a failure posting, // or the Twitter API might just be behaving flakey. $errmsg = sprintf('Twitter bridge - No data returned by Twitter API when ' . 'trying to post notice %d for User %s (user id %d).', $notice->id, $user->nickname, $user->id); common_log(LOG_WARNING, $errmsg); return false; } // Notice crossed the great divide $msg = sprintf('Twitter bridge - posted notice %d to Twitter using ' . 'OAuth for User %s (user id %d).', $notice->id, $user->nickname, $user->id); common_log(LOG_INFO, $msg); return true; } function broadcast_basicauth($notice, $flink) { $user = $flink->getUser(); $statustxt = format_status($notice); $client = new TwitterBasicAuthClient($flink); $status = null; try { $status = $client->statusesUpdate($statustxt); } catch (BasicAuthException $e) { return process_error($e, $flink, $notice); } if (empty($status)) { $errmsg = sprintf('Twitter bridge - No data returned by Twitter API when ' . 'trying to post notice %d for %s (user id %d).', $notice->id, $user->nickname, $user->id); common_log(LOG_WARNING, $errmsg); $errmsg = sprintf('No data returned by Twitter API when ' . 'trying to post notice %d for %s (user id %d).', $notice->id, $user->nickname, $user->id); common_log(LOG_WARNING, $errmsg); return false; } $msg = sprintf('Twitter bridge - posted notice %d to Twitter using ' . 'HTTP basic auth for User %s (user id %d).', $notice->id, $user->nickname, $user->id); common_log(LOG_INFO, $msg); return true; } function process_error($e, $flink, $notice) { $user = $flink->getUser(); $code = $e->getCode(); $logmsg = sprintf('Twitter bridge - %d posting notice %d for ' . 'User %s (user id: %d): %s.', $code, $notice->id, $user->nickname, $user->id, $e->getMessage()); common_log(LOG_WARNING, $logmsg); switch($code) { case 401: // Probably a revoked or otherwise bad access token - nuke! remove_twitter_link($flink); return true; break; case 403: // User has exceeder her rate limit -- toss the notice return true; break; default: // For every other case, it's probably some flakiness so try // sending the notice again later (requeue). return false; break; } } function format_status($notice) { // XXX: Hack to get around PHP cURL's use of @ being a a meta character $statustxt = preg_replace('/^@/', ' @', $notice->content); // Convert !groups to #hashes $statustxt = preg_replace('/(^|\s)!([A-Za-z0-9]{1,64})/', "\\1#\\2", $statustxt); return $statustxt; } function remove_twitter_link($flink) { $user = $flink->getUser(); common_log(LOG_INFO, 'Removing Twitter bridge Foreign link for ' . "user $user->nickname (user id: $user->id)."); $result = $flink->delete(); if (empty($result)) { common_log(LOG_ERR, 'Could not remove Twitter bridge ' . "Foreign_link for $user->nickname (user id: $user->id)!"); common_log_db_error($flink, 'DELETE', __FILE__); } // Notify the user that her Twitter bridge is down if (isset($user->email)) { $result = mail_twitter_bridge_removed($user); if (!$result) { $msg = 'Unable to send email to notify ' . "$user->nickname (user id: $user->id) " . 'that their Twitter bridge link was ' . 'removed!'; common_log(LOG_WARNING, $msg); } } } /** * Send a mail message to notify a user that her Twitter bridge link * has stopped working, and therefore has been removed. This can * happen when the user changes her Twitter password, or otherwise * revokes access. * * @param User $user user whose Twitter bridge link has been removed * * @return boolean success flag */ function mail_twitter_bridge_removed($user) { common_init_locale($user->language); $profile = $user->getProfile(); $subject = sprintf(_m('Your Twitter bridge has been disabled.')); $site_name = common_config('site', 'name'); $body = sprintf(_m('Hi, %1$s. We\'re sorry to inform you that your ' . 'link to Twitter has been disabled. We no longer seem to have ' . 'permission to update your Twitter status. (Did you revoke ' . '%3$s\'s access?)' . "\n\n" . 'You can re-enable your Twitter bridge by visiting your ' . "Twitter settings page:\n\n\t%2\$s\n\n" . "Regards,\n%3\$s\n"), $profile->getBestName(), common_local_url('twittersettings'), common_config('site', 'name')); common_init_locale(); return mail_to_user($user, $subject, $body); }