434 lines
14 KiB
PHP
434 lines
14 KiB
PHP
<?php
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/*
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* Laconica - a distributed open-source microblogging tool
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* Copyright (C) 2008, 2009, Control Yourself, Inc.
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*
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* 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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if (!defined('LACONICA')) { exit(1); }
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define('TWITTER_SERVICE', 1); // Twitter is foreign_service ID 1
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function get_twitter_data($uri, $screen_name, $password)
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{
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$options = array(
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CURLOPT_USERPWD => sprintf("%s:%s", $screen_name, $password),
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CURLOPT_RETURNTRANSFER => true,
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CURLOPT_FAILONERROR => true,
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CURLOPT_HEADER => false,
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CURLOPT_FOLLOWLOCATION => true,
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CURLOPT_USERAGENT => "Laconica",
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CURLOPT_CONNECTTIMEOUT => 120,
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CURLOPT_TIMEOUT => 120,
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# Twitter is strict about accepting invalid "Expect" headers
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CURLOPT_HTTPHEADER => array('Expect:')
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);
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$ch = curl_init($uri);
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curl_setopt_array($ch, $options);
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$data = curl_exec($ch);
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$errmsg = curl_error($ch);
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if ($errmsg) {
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common_debug("Twitter bridge - cURL error: $errmsg - trying to load: $uri with user $screen_name.",
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__FILE__);
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if (defined('SCRIPT_DEBUG')) {
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print "cURL error: $errmsg - trying to load: $uri with user $screen_name.\n";
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}
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}
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curl_close($ch);
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return $data;
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}
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function twitter_json_data($uri, $screen_name, $password)
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{
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$json_data = get_twitter_data($uri, $screen_name, $password);
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if (!$json_data) {
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return false;
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}
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$data = json_decode($json_data);
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if (!$data) {
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return false;
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}
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return $data;
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}
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function twitter_user_info($screen_name, $password)
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{
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$uri = "http://twitter.com/users/show/$screen_name.json";
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return twitter_json_data($uri, $screen_name, $password);
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}
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function twitter_friends_ids($screen_name, $password)
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{
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$uri = "http://twitter.com/friends/ids/$screen_name.json";
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return twitter_json_data($uri, $screen_name, $password);
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}
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function update_twitter_user($twitter_id, $screen_name)
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{
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$uri = 'http://twitter.com/' . $screen_name;
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$fuser = new Foreign_user();
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$fuser->query('BEGIN');
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// Dropping down to SQL because regular db_object udpate stuff doesn't seem
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// to work so good with tables that have multiple column primary keys
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// Any time we update the uri for a forein user we have to make sure there
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// are no dupe entries first -- unique constraint on the uri column
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$qry = 'UPDATE foreign_user set uri = \'\' WHERE uri = ';
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$qry .= '\'' . $uri . '\'' . ' AND service = ' . TWITTER_SERVICE;
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$result = $fuser->query($qry);
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if ($result) {
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common_debug("Removed uri ($uri) from another foreign_user who was squatting on it.");
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if (defined('SCRIPT_DEBUG')) {
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print("Removed uri ($uri) from another Twitter user who was squatting on it.\n");
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}
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}
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// Update the user
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$qry = 'UPDATE foreign_user SET nickname = ';
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$qry .= '\'' . $screen_name . '\'' . ', uri = \'' . $uri . '\' ';
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$qry .= 'WHERE id = ' . $twitter_id . ' AND service = ' . TWITTER_SERVICE;
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$result = $fuser->query($qry);
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if (!$result) {
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common_log(LOG_WARNING,
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"Couldn't update foreign_user data for Twitter user: $screen_name");
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common_log_db_error($fuser, 'UPDATE', __FILE__);
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if (defined('SCRIPT_DEBUG')) {
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print "UPDATE failed: for Twitter user: $twitter_id - $screen_name. - ";
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print common_log_objstring($fuser) . "\n";
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$error = &PEAR::getStaticProperty('DB_DataObject','lastError');
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print "DB_DataObject Error: " . $error->getMessage() . "\n";
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}
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return false;
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}
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$fuser->query('COMMIT');
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$fuser->free();
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unset($fuser);
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return true;
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}
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function add_twitter_user($twitter_id, $screen_name)
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{
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$new_uri = 'http://twitter.com/' . $screen_name;
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// Clear out any bad old foreign_users with the new user's legit URL
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// This can happen when users move around or fakester accounts get
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// repoed, and things like that.
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$luser = new Foreign_user();
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$luser->uri = $new_uri;
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$luser->service = TWITTER_SERVICE;
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$result = $luser->delete();
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if ($result) {
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common_log(LOG_WARNING,
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"Twitter bridge - removed invalid Twitter user squatting on uri: $new_uri");
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if (defined('SCRIPT_DEBUG')) {
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print "Removed invalid Twitter user squatting on uri: $new_uri\n";
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}
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}
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$luser->free();
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unset($luser);
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// Otherwise, create a new Twitter user
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$fuser = new Foreign_user();
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$fuser->nickname = $screen_name;
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$fuser->uri = 'http://twitter.com/' . $screen_name;
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$fuser->id = $twitter_id;
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$fuser->service = TWITTER_SERVICE;
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$fuser->created = common_sql_now();
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$result = $fuser->insert();
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if (!$result) {
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common_log(LOG_WARNING,
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"Twitter bridge - failed to add new Twitter user: $twitter_id - $screen_name.");
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common_log_db_error($fuser, 'INSERT', __FILE__);
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if (defined('SCRIPT_DEBUG')) {
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print "INSERT failed: could not add new Twitter user: $twitter_id - $screen_name. - ";
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print common_log_objstring($fuser) . "\n";
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$error = &PEAR::getStaticProperty('DB_DataObject','lastError');
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print "DB_DataObject Error: " . $error->getMessage() . "\n";
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}
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} else {
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common_debug("Twitter bridge - Added new Twitter user: $screen_name ($twitter_id).");
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if (defined('SCRIPT_DEBUG')) {
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print "Added new Twitter user: $screen_name ($twitter_id).\n";
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}
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}
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return $result;
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}
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// Creates or Updates a Twitter user
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function save_twitter_user($twitter_id, $screen_name)
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{
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// Check to see whether the Twitter user is already in the system,
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// and update its screen name and uri if so.
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$fuser = Foreign_user::getForeignUser($twitter_id, TWITTER_SERVICE);
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if ($fuser) {
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$result = true;
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// Only update if Twitter screen name has changed
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if ($fuser->nickname != $screen_name) {
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$result = update_twitter_user($twitter_id, $screen_name);
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common_debug('Twitter bridge - Updated nickname (and URI) for Twitter user ' .
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"$fuser->id to $screen_name, was $fuser->nickname");
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if (defined('SCRIPT_DEBUG')) {
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print 'Updated nickname (and URI) for Twitter user ' .
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"$fuser->id to $screen_name, was $fuser->nickname\n";
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}
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}
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return $result;
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} else {
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return add_twitter_user($twitter_id, $screen_name);
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}
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$fuser->free();
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unset($fuser);
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return true;
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}
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function retreive_twitter_friends($twitter_id, $screen_name, $password)
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{
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$friends = array();
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$uri = "http://twitter.com/statuses/friends/$twitter_id.json?page=";
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$friends_ids = twitter_friends_ids($screen_name, $password);
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if (!$friends_ids) {
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return $friends;
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}
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if (defined('SCRIPT_DEBUG')) {
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print "Twitter 'social graph' ids method says $screen_name has " .
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count($friends_ids) . " friends.\n";
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}
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// Calculate how many pages to get...
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$pages = ceil(count($friends_ids) / 100);
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if ($pages == 0) {
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common_log(LOG_WARNING,
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"Twitter bridge - $screen_name seems to have no friends.");
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if (defined('SCRIPT_DEBUG')) {
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print "$screen_name seems to have no friends.\n";
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}
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}
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for ($i = 1; $i <= $pages; $i++) {
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$data = get_twitter_data($uri . $i, $screen_name, $password);
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if (!$data) {
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common_log(LOG_WARNING,
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"Twitter bridge - Couldn't retrieve page $i of $screen_name's friends.");
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if (defined('SCRIPT_DEBUG')) {
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print "Couldn't retrieve page $i of $screen_name's friends.\n";
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}
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continue;
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}
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$more_friends = json_decode($data);
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if (!$more_friends) {
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common_log(LOG_WARNING,
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"Twitter bridge - No data for page $i of $screen_name's friends.");
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if (defined('SCRIPT_DEBUG')) {
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print "No data for page $i of $screen_name's friends.\n";
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}
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continue;
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}
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$friends = array_merge($friends, $more_friends);
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}
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return $friends;
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}
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function save_twitter_friends($user, $twitter_id, $screen_name, $password)
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{
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$friends = retreive_twitter_friends($twitter_id, $screen_name, $password);
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if (empty($friends)) {
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common_debug("Twitter bridge - Couldn't get friends data from Twitter for $screen_name.");
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if (defined('SCRIPT_DEBUG')) {
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print "Couldn't get friends data from Twitter for $screen_name.\n";
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}
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return false;
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}
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foreach ($friends as $friend) {
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$friend_name = $friend->screen_name;
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$friend_id = (int) $friend->id;
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// Update or create the Foreign_user record
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if (!save_twitter_user($friend_id, $friend_name)) {
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common_log(LOG_WARNING,
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"Twitter bridge - couldn't save $screen_name's friend, $friend_name.");
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if (defined('SCRIPT_DEBUG')) {
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print "Couldn't save $screen_name's friend, $friend_name.\n";
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}
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continue;
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}
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// Check to see if there's a related local user
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$flink = Foreign_link::getByForeignID($friend_id, 1);
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if ($flink) {
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// Get associated user and subscribe her
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$friend_user = User::staticGet('id', $flink->user_id);
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if (!empty($friend_user)) {
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$result = subs_subscribe_to($user, $friend_user);
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if ($result === true) {
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common_debug("Twitter bridge - subscribed $friend_user->nickname to $user->nickname.");
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if (defined('SCRIPT_DEBUG')) {
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print("Subscribed $friend_user->nickname to $user->nickname.\n");
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}
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} else {
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if (defined('SCRIPT_DEBUG')) {
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print "$result ($friend_user->nickname to $user->nickname)\n";
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}
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}
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}
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}
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}
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return true;
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}
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function is_twitter_bound($notice, $flink) {
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// Check to see if notice should go to Twitter
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if (!empty($flink) && ($flink->noticesync & FOREIGN_NOTICE_SEND)) {
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// If it's not a Twitter-style reply, or if the user WANTS to send replies.
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if (!preg_match('/^@[a-zA-Z0-9_]{1,15}\b/u', $notice->content) ||
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($flink->noticesync & FOREIGN_NOTICE_SEND_REPLY)) {
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return true;
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}
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}
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return false;
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}
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function broadcast_twitter($notice)
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{
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$success = true;
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$flink = Foreign_link::getByUserID($notice->profile_id,
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TWITTER_SERVICE);
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// XXX: Not sure WHERE to check whether a notice should go to
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// Twitter. Should we even put in the queue if it shouldn't? --Zach
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if (!is_null($flink) && is_twitter_bound($notice, $flink)) {
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$fuser = $flink->getForeignUser();
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$twitter_user = $fuser->nickname;
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$twitter_password = $flink->credentials;
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$uri = 'http://www.twitter.com/statuses/update.json';
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// XXX: Hack to get around PHP cURL's use of @ being a a meta character
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$statustxt = preg_replace('/^@/', ' @', $notice->content);
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$options = array(
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CURLOPT_USERPWD => "$twitter_user:$twitter_password",
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CURLOPT_POST => true,
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CURLOPT_POSTFIELDS =>
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array(
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'status' => $statustxt,
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'source' => common_config('integration', 'source')
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),
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CURLOPT_RETURNTRANSFER => true,
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CURLOPT_FAILONERROR => true,
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CURLOPT_HEADER => false,
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CURLOPT_FOLLOWLOCATION => true,
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CURLOPT_USERAGENT => "Laconica",
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CURLOPT_CONNECTTIMEOUT => 120, // XXX: How long should this be?
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CURLOPT_TIMEOUT => 120,
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# Twitter is strict about accepting invalid "Expect" headers
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CURLOPT_HTTPHEADER => array('Expect:')
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);
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$ch = curl_init($uri);
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curl_setopt_array($ch, $options);
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$data = curl_exec($ch);
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$errmsg = curl_error($ch);
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if ($errmsg) {
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common_debug("cURL error: $errmsg - " .
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"trying to send notice for $twitter_user.",
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__FILE__);
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$success = false;
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}
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curl_close($ch);
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if (!$data) {
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common_debug("No data returned by Twitter's " .
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"API trying to send update for $twitter_user",
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__FILE__);
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$success = false;
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}
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// Twitter should return a status
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$status = json_decode($data);
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if (!$status->id) {
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common_debug("Unexpected data returned by Twitter " .
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" API trying to send update for $twitter_user",
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__FILE__);
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$success = false;
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}
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}
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return $success;
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}
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