gnu-social/plugins/RSSCloud/RSSCloudRequestNotify.php

258 lines
7.0 KiB
PHP

<?php
/**
* Action to let RSSCloud aggregators request update notification when
* user profile feeds change.
*
* PHP version 5
*
* @category Plugin
* @package StatusNet
* @author Zach Copley <zach@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
* @link http://status.net/
*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2009, 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')) {
exit(1);
}
class RSSCloudRequestNotifyAction extends Action
{
/**
* Initialization.
*
* @param array $args Web and URL arguments
*
* @return boolean false if user doesn't exist
*/
function prepare($args)
{
parent::prepare($args);
$this->ip = $_SERVER['REMOTE_ADDR'];
$this->port = $this->arg('port');
$this->path = $this->arg('path');
$this->protocol = $this->arg('protocol');
$this->procedure = $this->arg('notifyProcedure');
$this->domain = $this->arg('domain');
$this->feeds = $this->getFeeds();
return true;
}
function handle($args)
{
parent::handle($args);
if ($_SERVER['REQUEST_METHOD'] != 'POST') {
$this->showResult(false, 'Request must be POST.');
return;
}
$missing = array();
if (empty($this->port)) {
$missing[] = 'port';
}
$path = $this->arg('path');
if (empty($this->path)) {
$missing[] = 'path';
}
$protocol = $this->arg('protocol');
if (empty($this->protocol)) {
$missing[] = 'protocol';
}
if (!isset($this->procedure)) {
$missing[] = 'notifyProcedure';
}
if (!empty($missing)) {
$msg = 'The following parameters were missing from the request body: ' .
implode(', ', $missing) . '.';
$this->showResult(false, $msg);
return;
}
if (empty($this->feeds)) {
$this->showResult(false,
'You must provide at least one valid profile feed url (url1, url2, url3 ... urlN).');
return;
}
// We have to validate everything before saving anything.
// We only return one success or failure no matter how
// many feeds the subscriber is trying to subscribe to
foreach ($this->feeds as $feed) {
if (!$this->validateFeed($feed)) {
$msg = 'Feed subscription failed - Not a valid feed.';
$this->showResult(false, $msg);
return;
}
if (!$this->testNotificationHandler($feed)) {
$msg = 'Feed subscription failed - ' .
'notification handler doesn\'t respond correctly.';
$this->showResult(false, $msg);
return;
}
}
foreach ($this->feeds as $feed) {
$this->saveSubscription($feed);
}
// XXX: What to do about deleting stale subscriptions? 25 hours seems harsh.
// WordPress doesn't ever remove subscriptions.
$msg = 'Thanks for the registration. It worked. When the feed(s) update(s) we\'ll notify you. ' .
' Don\'t forget to re-register after 24 hours, your subscription will expire in 25.';
$this->showResult(true, $msg);
}
function validateFeed($feed)
{
$user = $this->userFromFeed($feed);
if (empty($user)) {
return false;
}
return true;
}
function getFeeds()
{
$feeds = array();
while (list($key, $feed) = each ($this->args)) {
if (preg_match('/^url\d*$/', $key)) {
$feeds[] = $feed;
}
}
return $feeds;
}
function testNotificationHandler($feed)
{
common_debug("RSSCloudPlugin - testNotificationHandler()");
$notifier = new RSSCloudNotifier();
if (isset($this->domain)) {
//get
$this->url = 'http://' . $this->domain . ':' . $this->port . '/' . $this->path;
common_debug('domain set need to send challenge');
} else {
//post
$this->url = 'http://' . $this->ip . ':' . $this->port . '/' . $this->path;
//return $notifier->postUpdate($endpoint, $feed);
}
return true;
}
function userFromFeed($feed)
{
// We only do profile feeds
$path = common_path('api/statuses/user_timeline/');
$valid = '%^' . $path . '(?<nickname>.*)\.rss$%';
if (preg_match($valid, $feed, $matches)) {
$user = User::staticGet('nickname', $matches['nickname']);
if (!empty($user)) {
return $user;
}
}
return false;
}
function saveSubscription($feed)
{
$user = $this->userFromFeed($feed);
common_debug('user = ' . $user->id);
$sub = RSSCloudSubscription::getSubscription($user->id, $this->url);
if ($sub) {
common_debug("already subscribed to that!");
} else {
common_debug('No feed for user ' . $user->id . ' notify: ' . $this->url);
}
common_debug('RSSPlugin - saveSubscription');
// turn debugging high
DB_DataObject::debugLevel(5);
$sub = new RSSCloudSubscription();
$sub->subscribed = $user->id;
$sub->url = $this->url;
$sub->created = common_sql_now();
// auto timestamp doesn't seem to work for me
$sub->modified = common_sql_now();
if (!$sub->insert()) {
common_log_db_error($sub, 'INSERT', __FILE__);
return false;
}
DB_DataObject::debugLevel();
return true;
}
function showResult($success, $msg)
{
$this->startXML();
$this->elementStart('notifyResult', array('success' => ($success) ? 'true' : 'false',
'msg' => $msg));
$this->endXML();
}
}