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+<?php
+/**
+ * StatusNet, the distributed open-source microblogging tool
+ *
+ * Class for doing OAuth calls against Twitter
+ *
+ * PHP version 5
+ *
+ * LICENCE: 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/>.
+ *
+ * @category Integration
+ * @package StatusNet
+ * @author Zach Copley <zach@status.net>
+ * @copyright 2009 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://status.net/
+ */
+
+if (!defined('STATUSNET') && !defined('LACONICA')) {
+ exit(1);
+}
+
+/**
+ * Exception wrapper for cURL errors
+ *
+ * @category Integration
+ * @package StatusNet
+ * @author Adrian Lang <mail@adrianlang.de>
+ * @author Brenda Wallace <shiny@cpan.org>
+ * @author Craig Andrews <candrews@integralblue.com>
+ * @author Dan Moore <dan@moore.cx>
+ * @author Evan Prodromou <evan@status.net>
+ * @author mEDI <medi@milaro.net>
+ * @author Sarven Capadisli <csarven@status.net>
+ * @author Zach Copley <zach@status.net> * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://status.net/
+ *
+ */
+class BasicAuthCurlException extends Exception
+{
+}
+
+/**
+ * Class for talking to the Twitter API with HTTP Basic Auth.
+ *
+ * @category Integration
+ * @package StatusNet
+ * @author Zach Copley <zach@status.net>
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://status.net/
+ *
+ */
+class TwitterBasicAuthClient
+{
+ var $screen_name = null;
+ var $password = null;
+
+ /**
+ * constructor
+ *
+ * @param Foreign_link $flink a Foreign_link storing the
+ * Twitter user's password, etc.
+ */
+ function __construct($flink)
+ {
+ $fuser = $flink->getForeignUser();
+ $this->screen_name = $fuser->nickname;
+ $this->password = $flink->credentials;
+ }
+
+ /**
+ * Calls Twitter's /statuses/update API method
+ *
+ * @param string $status text of the status
+ * @param int $in_reply_to_status_id optional id of the status it's
+ * a reply to
+ *
+ * @return mixed the status
+ */
+ function statusesUpdate($status, $in_reply_to_status_id = null)
+ {
+ $url = 'https://twitter.com/statuses/update.json';
+ $params = array('status' => $status,
+ 'source' => common_config('integration', 'source'),
+ 'in_reply_to_status_id' => $in_reply_to_status_id);
+ $response = $this->httpRequest($url, $params);
+ $status = json_decode($response);
+ return $status;
+ }
+
+ /**
+ * Calls Twitter's /statuses/friends_timeline API method
+ *
+ * @param int $since_id show statuses after this id
+ * @param int $max_id show statuses before this id
+ * @param int $cnt number of statuses to show
+ * @param int $page page number
+ *
+ * @return mixed an array of statuses
+ */
+ function statusesFriendsTimeline($since_id = null, $max_id = null,
+ $cnt = null, $page = null)
+ {
+ $url = 'https://twitter.com/statuses/friends_timeline.json';
+ $params = array('since_id' => $since_id,
+ 'max_id' => $max_id,
+ 'count' => $cnt,
+ 'page' => $page);
+ $qry = http_build_query($params);
+
+ if (!empty($qry)) {
+ $url .= "?$qry";
+ }
+
+ $response = $this->httpRequest($url);
+ $statuses = json_decode($response);
+ return $statuses;
+ }
+
+ /**
+ * Calls Twitter's /statuses/friends API method
+ *
+ * @param int $id id of the user whom you wish to see friends of
+ * @param int $user_id numerical user id
+ * @param int $screen_name screen name
+ * @param int $page page number
+ *
+ * @return mixed an array of twitter users and their latest status
+ */
+ function statusesFriends($id = null, $user_id = null, $screen_name = null,
+ $page = null)
+ {
+ $url = "https://twitter.com/statuses/friends.json";
+
+ $params = array('id' => $id,
+ 'user_id' => $user_id,
+ 'screen_name' => $screen_name,
+ 'page' => $page);
+ $qry = http_build_query($params);
+
+ if (!empty($qry)) {
+ $url .= "?$qry";
+ }
+
+ $response = $this->httpRequest($url);
+ $friends = json_decode($response);
+ return $friends;
+ }
+
+ /**
+ * Calls Twitter's /statuses/friends/ids API method
+ *
+ * @param int $id id of the user whom you wish to see friends of
+ * @param int $user_id numerical user id
+ * @param int $screen_name screen name
+ * @param int $page page number
+ *
+ * @return mixed a list of ids, 100 per page
+ */
+ function friendsIds($id = null, $user_id = null, $screen_name = null,
+ $page = null)
+ {
+ $url = "https://twitter.com/friends/ids.json";
+
+ $params = array('id' => $id,
+ 'user_id' => $user_id,
+ 'screen_name' => $screen_name,
+ 'page' => $page);
+ $qry = http_build_query($params);
+
+ if (!empty($qry)) {
+ $url .= "?$qry";
+ }
+
+ $response = $this->httpRequest($url);
+ $ids = json_decode($response);
+ return $ids;
+ }
+
+ /**
+ * Make a HTTP request using cURL.
+ *
+ * @param string $url Where to make the request
+ * @param array $params post parameters
+ *
+ * @return mixed the request
+ */
+ function httpRequest($url, $params = null, $auth = true)
+ {
+ $options = array(
+ CURLOPT_RETURNTRANSFER => true,
+ CURLOPT_FAILONERROR => true,
+ CURLOPT_HEADER => false,
+ CURLOPT_FOLLOWLOCATION => true,
+ CURLOPT_USERAGENT => 'StatusNet',
+ CURLOPT_CONNECTTIMEOUT => 120,
+ CURLOPT_TIMEOUT => 120,
+ CURLOPT_HTTPAUTH => CURLAUTH_ANY,
+ CURLOPT_SSL_VERIFYPEER => false,
+
+ // Twitter is strict about accepting invalid "Expect" headers
+
+ CURLOPT_HTTPHEADER => array('Expect:')
+ );
+
+ if (isset($params)) {
+ $options[CURLOPT_POST] = true;
+ $options[CURLOPT_POSTFIELDS] = $params;
+ }
+
+ if ($auth) {
+ $options[CURLOPT_USERPWD] = $this->screen_name .
+ ':' . $this->password;
+ }
+
+ $ch = curl_init($url);
+ curl_setopt_array($ch, $options);
+ $response = curl_exec($ch);
+
+ if ($response === false) {
+ $msg = curl_error($ch);
+ $code = curl_errno($ch);
+ throw new BasicAuthCurlException($msg, $code);
+ }
+
+ curl_close($ch);
+
+ return $response;
+ }
+
+}
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