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-rw-r--r--plugins/TwitterBridge/twitter.php258
1 files changed, 258 insertions, 0 deletions
diff --git a/plugins/TwitterBridge/twitter.php b/plugins/TwitterBridge/twitter.php
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@@ -0,0 +1,258 @@
+<?php
+/*
+ * Laconica - a distributed open-source microblogging tool
+ * Copyright (C) 2008, 2009, Control Yourself, 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('LACONICA')) {
+ exit(1);
+}
+
+define('TWITTER_SERVICE', 1); // Twitter is foreign_service ID 1
+
+function update_twitter_user($twitter_id, $screen_name)
+{
+ $uri = 'http://twitter.com/' . $screen_name;
+ $fuser = new Foreign_user();
+
+ $fuser->query('BEGIN');
+
+ // Dropping down to SQL because regular DB_DataObject udpate stuff doesn't seem
+ // to work so good with tables that have multiple column primary keys
+
+ // Any time we update the uri for a forein user we have to make sure there
+ // are no dupe entries first -- unique constraint on the uri column
+
+ $qry = 'UPDATE foreign_user set uri = \'\' WHERE uri = ';
+ $qry .= '\'' . $uri . '\'' . ' AND service = ' . TWITTER_SERVICE;
+
+ $fuser->query($qry);
+
+ // Update the user
+
+ $qry = 'UPDATE foreign_user SET nickname = ';
+ $qry .= '\'' . $screen_name . '\'' . ', uri = \'' . $uri . '\' ';
+ $qry .= 'WHERE id = ' . $twitter_id . ' AND service = ' . TWITTER_SERVICE;
+
+ $fuser->query('COMMIT');
+
+ $fuser->free();
+ unset($fuser);
+
+ return true;
+}
+
+function add_twitter_user($twitter_id, $screen_name)
+{
+
+ $new_uri = 'http://twitter.com/' . $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 = new Foreign_user();
+ $luser->uri = $new_uri;
+ $luser->service = TWITTER_SERVICE;
+ $result = $luser->delete();
+
+ if (empty($result)) {
+ common_log(LOG_WARNING,
+ "Twitter bridge - removed invalid Twitter user squatting on uri: $new_uri");
+ }
+
+ $luser->free();
+ unset($luser);
+
+ // Otherwise, create a new Twitter user
+
+ $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_debug("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)) {
+
+ $result = true;
+
+ // Only update if Twitter screen name has changed
+
+ if ($fuser->nickname != $screen_name) {
+ $result = update_twitter_user($twitter_id, $screen_name);
+
+ common_debug('Twitter bridge - Updated nickname (and URI) for Twitter user ' .
+ "$fuser->id to $screen_name, was $fuser->nickname");
+ }
+
+ return $result;
+
+ } else {
+ return add_twitter_user($twitter_id, $screen_name);
+ }
+
+ $fuser->free();
+ unset($fuser);
+
+ return true;
+}
+
+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)) {
+
+ $user = $flink->getUser();
+
+ // XXX: Hack to get around PHP cURL's use of @ being a a meta character
+ $statustxt = preg_replace('/^@/', ' @', $notice->content);
+
+ $token = TwitterOAuthClient::unpackToken($flink->credentials);
+
+ $client = new TwitterOAuthClient($token->key, $token->secret);
+
+ $status = null;
+
+ try {
+ $status = $client->statusesUpdate($statustxt);
+ } catch (OAuthClientCurlException $e) {
+
+ if ($e->getMessage() == 'The requested URL returned error: 401') {
+
+ $errmsg = sprintf('User %1$s (user id: %2$s) has an invalid ' .
+ 'Twitter OAuth access token.',
+ $user->nickname, $user->id);
+ common_log(LOG_WARNING, $errmsg);
+
+ // Bad auth token! We need to delete the foreign_link
+ // to Twitter and inform the user.
+
+ remove_twitter_link($flink);
+ return true;
+
+ } else {
+
+ // Some other error happened, so we should probably
+ // try to send again later.
+
+ $errmsg = sprintf('cURL error trying to send notice to Twitter ' .
+ 'for user %1$s (user id: %2$s) - ' .
+ 'code: %3$s message: $4$s.',
+ $user->nickname, $user->id,
+ $e->getCode(), $e->getMessage());
+ common_log(LOG_WARNING, $errmsg);
+
+ return false;
+ }
+ }
+
+ if (empty($status)) {
+
+ // This could represent a failure posting,
+ // or the Twitter API might just be behaving flakey.
+
+ $errmsg = sprint('No data returned by Twitter API when ' .
+ 'trying to send update for %1$s (user id %2$s).',
+ $user->nickname, $user->id);
+ common_log(LOG_WARNING, $errmsg);
+
+ return false;
+ }
+
+ // Notice crossed the great divide
+
+ $msg = sprintf('Twitter bridge posted notice %s to Twitter.',
+ $notice->id);
+ common_log(LOG_INFO, $msg);
+ }
+
+ return true;
+}
+
+function remove_twitter_link($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);
+ }
+ }
+
+}
+
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