friendica/src/Worker/PubSubPublish.php

108 lines
3.4 KiB
PHP

<?php
/**
* @file src/Worker/PubSubPublish.php
*/
namespace Friendica\Worker;
use Friendica\App;
use Friendica\Core\System;
use Friendica\Core\Config;
use Friendica\Core\Worker;
use Friendica\Database\DBM;
use Friendica\Protocol\OStatus;
use Friendica\Util\Network;
use Friendica\Util\DateTimeFormat;
use dba;
require_once 'include/items.php';
class PubSubPublish {
public static function execute($pubsubpublish_id = 0)
{
global $a;
if ($pubsubpublish_id != 0) {
self::publish($pubsubpublish_id);
return;
}
// We'll push to each subscriber that has push > 0,
// i.e. there has been an update (set in notifier.php).
$subscribers = dba::select('push_subscriber', ['id', 'callback_url'], ["`push` > 0 AND `next_try` < UTC_TIMESTAMP()"]);
while ($subscriber = dba::fetch($subscribers)) {
logger("Publish feed to " . $subscriber["callback_url"], LOGGER_DEBUG);
Worker::add(['priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true],
'PubSubPublish', (int)$subscriber["id"]);
}
dba::close($subscribers);
}
private static function publish($id) {
global $a;
$subscriber = dba::selectFirst('push_subscriber', [], ['id' => $id]);
if (!DBM::is_result($subscriber)) {
return;
}
/// @todo Check server status with PortableContact::checkServer()
// Before this can be done we need a way to safely detect the server url.
logger("Generate feed of user " . $subscriber['nickname']. " to " . $subscriber['callback_url']. " - last updated " . $subscriber['last_update'], LOGGER_DEBUG);
$last_update = $subscriber['last_update'];
$params = OStatus::feed($subscriber['nickname'], $last_update);
if (!$params) {
return;
}
$hmac_sig = hash_hmac("sha1", $params, $subscriber['secret']);
$headers = ["Content-type: application/atom+xml",
sprintf("Link: <%s>;rel=hub,<%s>;rel=self",
System::baseUrl() . '/pubsubhubbub/' . $subscriber['nickname'],
$subscriber['topic']),
"X-Hub-Signature: sha1=" . $hmac_sig];
logger('POST ' . print_r($headers, true) . "\n" . $params, LOGGER_DATA);
Network::post($subscriber['callback_url'], $params, $headers);
$ret = $a->get_curl_code();
$condition = ['id' => $subscriber['id']];
if ($ret >= 200 && $ret <= 299) {
logger('Successfully pushed to ' . $subscriber['callback_url']);
// set last_update to the "created" date of the last item, and reset push=0
$fields = ['push' => 0, 'next_try' => NULL_DATE, 'last_update' => $last_update];
dba::update('push_subscriber', $fields, $condition);
} else {
logger('Delivery error when pushing to ' . $subscriber['callback_url'] . ' HTTP: ' . $ret);
// we use the push variable also as a counter, if we failed we
// increment this until some upper limit where we give up
$retrial = $subscriber['push'];
if ($retrial > 14) {
dba::update('push_subscriber', ['push' => 0, 'next_try' => NULL_DATE], $condition);
logger('Delivery error: Giving up for ' . $subscriber['callback_url'], LOGGER_DEBUG);
} else {
// Calculate the delay until the next trial
$delay = (($retrial + 3) ** 4) + (rand(1, 30) * ($retrial + 1));
$next = DateTimeFormat::utc('now + ' . $delay . ' seconds');
$retrial = $retrial + 1;
dba::update('push_subscriber', ['push' => $retrial, 'next_try' => $next], $condition);
logger('Delivery error: Next try (' . $retrial . ') for ' . $subscriber['callback_url'] . ' at ' . $next, LOGGER_DEBUG);
}
}
}
}