235 lines
7.9 KiB
PHP
235 lines
7.9 KiB
PHP
<?php
|
|
/**
|
|
* StatusNet, the distributed open-source microblogging tool
|
|
*
|
|
* Class to ping an rssCloud endpoint when a feed has been updated
|
|
*
|
|
* 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 Plugin
|
|
* @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')) {
|
|
exit(1);
|
|
}
|
|
|
|
/**
|
|
* Class for notifying cloud-enabled RSS aggregators that StatusNet
|
|
* feeds have been updated.
|
|
*
|
|
* @category Plugin
|
|
* @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 RSSCloudNotifier
|
|
{
|
|
const MAX_FAILURES = 3;
|
|
|
|
/**
|
|
* Send an HTTP GET to the notification handler with a
|
|
* challenge string to see if it repsonds correctly.
|
|
*
|
|
* @param string $endpoint URL of the notification handler
|
|
* @param string $feed the feed being subscribed to
|
|
*
|
|
* @return boolean success
|
|
*/
|
|
function challenge($endpoint, $feed)
|
|
{
|
|
$code = common_confirmation_code(128);
|
|
$params = array('url' => $feed, 'challenge' => $code);
|
|
$url = $endpoint . '?' . http_build_query($params);
|
|
|
|
try {
|
|
$client = new HTTPClient();
|
|
$response = $client->get($url);
|
|
} catch (Exception $e) {
|
|
common_log(LOG_INFO,
|
|
'RSSCloud plugin - failure testing notify handler ' .
|
|
$endpoint . ' - ' . $e->getMessage());
|
|
return false;
|
|
}
|
|
|
|
// Check response is betweet 200 and 299 and body contains challenge data
|
|
|
|
$status = $response->getStatus();
|
|
$body = $response->getBody();
|
|
|
|
if ($status >= 200 && $status < 300) {
|
|
// NOTE: the spec says that the body must contain the string
|
|
// challenge. It doesn't say that the body must contain the
|
|
// challenge string ONLY, although that seems to be the way
|
|
// the other implementors have interpreted it.
|
|
|
|
if (strpos($body, $code) !== false) {
|
|
common_log(LOG_INFO, 'RSSCloud plugin - ' .
|
|
"success testing notify handler: $endpoint");
|
|
return true;
|
|
} else {
|
|
common_log(LOG_INFO, 'RSSCloud plugin - ' .
|
|
'challenge/repsonse failed for notify handler ' .
|
|
$endpoint);
|
|
common_debug('body = ' . var_export($body, true));
|
|
return false;
|
|
}
|
|
} else {
|
|
common_log(LOG_INFO, 'RSSCloud plugin - ' .
|
|
"failure testing notify handler: $endpoint " .
|
|
' - got HTTP ' . $status);
|
|
common_debug('body = ' . var_export($body, true));
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* HTTP POST a notification that a feed has been updated
|
|
* ('ping the cloud').
|
|
*
|
|
* @param String $endpoint URL of the notification handler
|
|
* @param String $feed the feed being subscribed to
|
|
*
|
|
* @return boolean success
|
|
*/
|
|
function postUpdate($endpoint, $feed)
|
|
{
|
|
$headers = array();
|
|
$postdata = array('url' => $feed);
|
|
|
|
try {
|
|
$client = new HTTPClient();
|
|
$response = $client->post($endpoint, $headers, $postdata);
|
|
} catch (Exception $e) {
|
|
common_log(LOG_INFO, 'RSSCloud plugin - failure notifying ' .
|
|
$endpoint . ' that feed ' . $feed .
|
|
' has changed: ' . $e->getMessage());
|
|
return false;
|
|
}
|
|
|
|
$status = $response->getStatus();
|
|
|
|
if ($status >= 200 && $status < 300) {
|
|
common_log(LOG_INFO, 'RSSCloud plugin - success notifying ' .
|
|
$endpoint . ' that feed ' . $feed . ' has changed.');
|
|
return true;
|
|
} else {
|
|
common_log(LOG_INFO, 'RSSCloud plugin - failure notifying ' .
|
|
$endpoint . ' that feed ' . $feed .
|
|
' has changed: got HTTP ' . $status);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Notify all subscribers to a profile feed that it has changed.
|
|
*
|
|
* @param Profile $profile the profile whose feed has been
|
|
* updated
|
|
*
|
|
* @return boolean success
|
|
*/
|
|
function notify($profile)
|
|
{
|
|
$feed = common_path('api/statuses/user_timeline/') .
|
|
$profile->id . '.rss';
|
|
|
|
$cloudSub = new RSSCloudSubscription();
|
|
|
|
$cloudSub->subscribed = $profile->id;
|
|
|
|
if ($cloudSub->find()) {
|
|
while ($cloudSub->fetch()) {
|
|
$result = $this->postUpdate($cloudSub->url, $feed);
|
|
if ($result == false) {
|
|
$this->handleFailure($cloudSub);
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Handle problems posting cloud notifications. Increment the failure
|
|
* count, or delete the subscription if the maximum number of failures
|
|
* is exceeded.
|
|
*
|
|
* XXX: Redo with proper DB_DataObject methods once I figure out what
|
|
* what the problem is with pluginized DB_DataObjects. -Z
|
|
*
|
|
* @param RSSCloudSubscription $cloudSub the subscription in question
|
|
*
|
|
* @return boolean success
|
|
*/
|
|
function handleFailure($cloudSub)
|
|
{
|
|
$failCnt = $cloudSub->failures + 1;
|
|
|
|
if ($failCnt == self::MAX_FAILURES) {
|
|
|
|
common_log(LOG_INFO,
|
|
'Deleting RSSCloud subcription ' .
|
|
'(max failure count reached), profile: ' .
|
|
$cloudSub->subscribed .
|
|
' handler: ' .
|
|
$cloudSub->url);
|
|
|
|
// XXX: WTF! ->delete() doesn't work. Clearly, there are some issues with
|
|
// the DB_DataObject, or my understanding of it. Have to drop into SQL.
|
|
|
|
// $result = $cloudSub->delete();
|
|
|
|
$qry = 'DELETE from rsscloud_subscription' .
|
|
' WHERE subscribed = ' . $cloudSub->subscribed .
|
|
' AND url = \'' . $cloudSub->url . '\'';
|
|
|
|
$result = $cloudSub->query($qry);
|
|
|
|
if (!$result) {
|
|
common_log_db_error($cloudSub, 'DELETE', __FILE__);
|
|
common_log(LOG_ERR, 'Could not delete RSSCloud subscription.');
|
|
}
|
|
} else {
|
|
common_debug('Updating failure count on RSSCloud subscription. ' .
|
|
$failCnt);
|
|
|
|
$failCnt = $cloudSub->failures + 1;
|
|
|
|
// XXX: ->update() not working either, gar!
|
|
|
|
$qry = 'UPDATE rsscloud_subscription' .
|
|
' SET failures = ' . $failCnt .
|
|
' WHERE subscribed = ' . $cloudSub->subscribed .
|
|
' AND url = \'' . $cloudSub->url . '\'';
|
|
|
|
$result = $cloudSub->query($qry);
|
|
|
|
if (!$result) {
|
|
common_log_db_error($cloudsub, 'UPDATE', __FILE__);
|
|
common_log(LOG_ERR,
|
|
'Could not update failure ' .
|
|
'count on RSSCloud subscription');
|
|
}
|
|
}
|
|
}
|
|
}
|