gnu-social/lib/twitterapi.php

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<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, 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); }
class TwitterapiAction extends Action {
function handle($args) {
parent::handle($args);
}
function twitter_user_array($profile, $get_notice=false) {
$twitter_user = array();
$twitter_user['name'] = $profile->getBestName();
$twitter_user['followers_count'] = $this->count_subscriptions($profile);
$twitter_user['screen_name'] = $profile->nickname;
$twitter_user['description'] = ($profile->bio) ? $profile->bio : NULL;
$twitter_user['location'] = ($profile->location) ? $profile->location : NULL;
$twitter_user['id'] = intval($profile->id);
$avatar = $profile->getAvatar(AVATAR_STREAM_SIZE);
$twitter_user['profile_image_url'] = ($avatar) ? common_avatar_display_url($avatar) : common_default_avatar(AVATAR_STREAM_SIZE);
$twitter_user['protected'] = false; # not supported by Laconica yet
$twitter_user['url'] = ($profile->homepage) ? $profile->homepage : NULL;
if ($get_notice) {
$notice = $profile->getCurrentNotice();
if ($notice) {
# don't get user!
$twitter_user['status'] = $this->twitter_status_array($notice, false);
}
}
return $twitter_user;
}
function twitter_status_array($notice, $get_user=true) {
$twitter_status = array();
$twitter_status['text'] = $notice->content;
$twitter_status['truncated'] = false; # Not possible on Laconica
$twitter_status['created_at'] = $this->date_twitter($notice->created);
$twitter_status['in_reply_to_status_id'] = ($notice->reply_to) ? intval($notice->reply_to) : NULL;
$twitter_status['source'] = NULL; # XXX: twitterific, twitterfox, etc. Not supported yet.
$twitter_status['id'] = intval($notice->id);
$twitter_status['in_reply_to_user_id'] = ($notice->reply_to) ? $this->replier_by_reply(intval($notice->reply_to)) : NULL;
$twitter_status['favorited'] = NULL; # XXX: Not implemented on Laconica yet.
if ($get_user) {
$profile = $notice->getProfile();
# Don't get notice (recursive!)
$twitter_user = $this->twitter_user_array($profile, false);
$twitter_status['user'] = $twitter_user;
}
return $twitter_status;
}
function twitter_rss_entry_array($notice) {
$profile = $notice->getProfile();
$server = common_config('site', 'server');
$entry = array();
$entry['content'] = $profile->nickname . ': ' . $notice->content;
$entry['title'] = $entry['content'];
$entry['link'] = common_local_url('shownotice', array('notice' => $notice->id));;
$entry['published'] = common_date_iso8601($notice->created);
$entry['id'] = "tag:$server,$entry[published]:$entry[link]";
$entry['updated'] = $entry['published'];
# RSS Item specific
$entry['description'] = $entry['content'];
$entry['pubDate'] = common_date_rfc2822($notice->created);
$entry['guid'] = $entry['link'];
return $entry;
}
function show_twitter_xml_status($twitter_status) {
common_element_start('status');
common_element('created_at', NULL, $twitter_status['created_at']);
common_element('id', NULL, $twitter_status['id']);
common_element('text', NULL, $twitter_status['text']);
common_element('source', NULL, $twitter_status['source']);
common_element('truncated', NULL, $twitter_status['truncated']);
common_element('in_reply_to_status_id', NULL, $twitter_status['in_reply_to_status_id']);
common_element('in_reply_to_user_id', NULL, $twitter_status['in_reply_to_user_id']);
common_element('favorited', Null, $twitter_status['favorited']);
if ($twitter_status['user']) {
$this->show_twitter_xml_user($twitter_status['user']);
}
common_element_end('status');
}
function show_twitter_xml_user($twitter_user) {
common_element_start('user');
common_element('id', NULL, $twitter_user['id']);
common_element('name', NULL, $twitter_user['name']);
common_element('screen_name', NULL, $twitter_user['screen_name']);
common_element('location', NULL, $twitter_user['location']);
common_element('description', NULL, $twitter_user['description']);
common_element('profile_image_url', NULL, $twitter_user['profile_image_url']);
common_element('url', NULL, $twitter_user['url']);
common_element('protected', NULL, $twitter_user['protected']);
common_element('followers_count', NULL, $twitter_user['followers_count']);
if ($twitter_user['status']) {
$this->show_twitter_xml_status($twitter_user['status']);
}
common_element_end('user');
}
function show_twitter_rss_item($entry) {
common_element_start('item');
common_element('title', NULL, $entry['title']);
common_element('description', NULL, $entry['description']);
common_element('pubDate', NULL, $entry['pubDate']);
common_element('guid', NULL, $entry['guid']);
common_element('link', NULL, $entry['link']);
common_element_end('item');
}
function show_twitter_atom_entry($entry) {
common_element_start('entry');
common_element('title', NULL, $entry['title']);
common_element('content', array('type' => 'html'), $entry['title']);
common_element('id', NULL, $entry['id']);
common_element('published', NULL, $entry['published']);
common_element('updated', NULL, $entry['updated']);
common_element('link', array('href' => $entry['link'], 'rel' => 'alternate', 'type' => 'text/html'), NULL);
common_element_end('entry');
}
function show_twitter_json_statuses($twitter_statuses) {
print(json_encode($twitter_statuses));
}
function show_twitter_json_users($twitter_users) {
print(json_encode($twitter_users));
}
function show($args, $apidata) {
parent::handle($args);
$id = $apidata['api_arg'];
$notice = Notice::staticGet($id);
if ($notice) {
if ($apidata['content-type'] == 'xml') {
$this->show_single_xml_status($notice);
} elseif ($apidata['content-type'] == 'json') {
$this->show_single_json_status($notice);
}
} else {
header('HTTP/1.1 404 Not Found');
}
exit();
}
function show_single_xml_status($notice) {
$this->init_document('xml');
$twitter_status = $this->twitter_status_array($notice);
$this->show_twitter_xml_status($twitter_status);
$this->end_document('xml');
exit();
}
function show_single_json_status($notice) {
$this->init_document('json');
$status = $this->twitter_status_array($notice);
$this->show_twitter_json_statuses($status);
$this->end_document('json');
exit();
}
// Anyone know what date format this is?
// Twitter's dates look like this: "Mon Jul 14 23:52:38 +0000 2008" -- Zach
function date_twitter($dt) {
$t = strtotime($dt);
return date("D M d G:i:s O Y", $t);
}
function replier_by_reply($reply_id) {
$notice = Notice::staticGet($reply_id);
if ($notice) {
$profile = $notice->getProfile();
if ($profile) {
return intval($profile->id);
} else {
common_debug('Can\'t find a profile for notice: ' . $notice->id, __FILE__);
}
} else {
common_debug("Can't get notice: $reply_id", __FILE__);
}
return NULL;
}
// XXX: Candidate for a general utility method somewhere?
function count_subscriptions($profile) {
$count = 0;
$sub = new Subscription();
$sub->subscribed = $profile->id;
$count = $sub->find();
if ($count > 0) {
return $count - 1;
} else {
return 0;
}
}
function init_document($type='xml') {
switch ($type) {
case 'xml':
header('Content-Type: application/xml; charset=utf-8');
common_start_xml();
break;
case 'json':
header('Content-Type: application/json; charset=utf-8');
break;
case 'rss':
header("Content-Type: application/rss+xml; charset=utf-8");
$this->init_twitter_rss();
break;
case 'atom':
header('Content-Type: application/atom+xml; charset=utf-8');
$this->init_twitter_atom();
break;
default:
$this->client_error(_('Unsupported type'));
break;
}
return;
}
function end_document($type='xml') {
switch ($type) {
case 'xml':
common_end_xml();
break;
case 'json':
break;
case 'rss':
$this->end_twitter_rss();
break;
case 'atom':
$this->end_twitter_rss();
break;
default:
$this->client_error(_('Unsupported type'));
break;
}
return;
}
function client_error($msg, $code = 400, $content_type = 'json') {
static $status = array(400 => 'Bad Request',
401 => 'Unauthorized',
402 => 'Payment Required',
403 => 'Forbidden',
404 => 'Not Found',
405 => 'Method Not Allowed',
406 => 'Not Acceptable',
407 => 'Proxy Authentication Required',
408 => 'Request Timeout',
409 => 'Conflict',
410 => 'Gone',
411 => 'Length Required',
412 => 'Precondition Failed',
413 => 'Request Entity Too Large',
414 => 'Request-URI Too Long',
415 => 'Unsupported Media Type',
416 => 'Requested Range Not Satisfiable',
417 => 'Expectation Failed');
$action = $this->trimmed('action');
common_debug("User error '$code' on '$action': $msg", __FILE__);
if (!array_key_exists($code, $status)) {
$code = 400;
}
$status_string = $status[$code];
header('HTTP/1.1 '.$code.' '.$status_string);
if ($content_type == 'xml') {
$this->init_document('xml');
common_element_start('hash');
common_element('error', NULL, $msg);
common_element('request', NULL, $_SERVER['REQUEST_URI']);
common_element_end('hash');
$this->end_document('xml');
} else {
$this->init_document('json');
$error_array = array('error' => $msg, 'request' => $_SERVER['REQUEST_URI']);
print(json_encode($error_array));
$this->end_document('json');
}
exit();
}
function init_twitter_rss() {
common_start_xml();
common_element_start('rss', array('version' => '2.0'));
}
function end_twitter_rss() {
common_element_end('rss');
common_end_xml();
}
function init_twitter_atom() {
common_start_xml();
common_element_start('feed', array('xmlns' => 'http://www.w3.org/2005/Atom', 'xml:lang' => 'en-US'));
}
function end_twitter_atom() {
common_end_xml();
common_element_end('feed');
}
function show_profile($profile, $content_type='xml', $notice=NULL) {
$profile_array = $this->twitter_user_array($profile, true);
switch ($content_type) {
case 'xml':
$this->show_twitter_xml_user($profile_array);
break;
case 'json':
$this->show_twitter_json_users($profile_array);
break;
default:
$this->client_error(_('not a supported data format'));
return;
}
return;
}
}