friendica-github/src/Worker/PubSubPublish.php

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2017-11-19 17:36:20 +00:00
<?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;
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use Friendica\Util\Network;
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require_once 'include/items.php';
class PubSubPublish {
public static function execute($pubsubpublish_id = 0)
{
global $a;
if ($pubsubpublish_id == 0) {
// We'll push to each subscriber that has push > 0,
// i.e. there has been an update (set in notifier.php).
$r = q("SELECT `id`, `callback_url` FROM `push_subscriber` WHERE `push` > 0 ORDER BY `last_update` DESC");
foreach ($r as $rr) {
logger("Publish feed to ".$rr["callback_url"], LOGGER_DEBUG);
Worker::add(['priority' => PRIORITY_HIGH, 'created' => $a->queue['created'], 'dont_fork' => true],
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'PubSubPublish', (int)$rr["id"]);
}
}
self::publish($pubsubpublish_id);
return;
}
private static function publish($id) {
global $a;
$r = q("SELECT * FROM `push_subscriber` WHERE `id` = %d", intval($id));
if (!DBM::is_result($r)) {
return;
}
$rr = $r[0];
/// @todo Check server status with PortableContact::checkServer()
// Before this can be done we need a way to safely detect the server url.
logger("Generate feed of user ".$rr['nickname']." to ".$rr['callback_url']." - last updated ".$rr['last_update'], LOGGER_DEBUG);
$last_update = $rr['last_update'];
$params = OStatus::feed($rr['nickname'], $last_update);
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if (!$params) {
return;
}
$hmac_sig = hash_hmac("sha1", $params, $rr['secret']);
$headers = ["Content-type: application/atom+xml",
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sprintf("Link: <%s>;rel=hub,<%s>;rel=self",
System::baseUrl().'/pubsubhubbub/'.$rr['nickname'],
$rr['topic']),
"X-Hub-Signature: sha1=".$hmac_sig];
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logger('POST '.print_r($headers, true)."\n".$params, LOGGER_DEBUG);
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Network::postURL($rr['callback_url'], $params, $headers);
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$ret = $a->get_curl_code();
if ($ret >= 200 && $ret <= 299) {
logger('successfully pushed to '.$rr['callback_url']);
// set last_update to the "created" date of the last item, and reset push=0
q("UPDATE `push_subscriber` SET `push` = 0, last_update = '%s' WHERE id = %d",
dbesc($last_update),
intval($rr['id']));
} else {
logger('error when pushing to '.$rr['callback_url'].' HTTP: '.$ret);
// we use the push variable also as a counter, if we failed we
// increment this until some upper limit where we give up
$new_push = intval($rr['push']) + 1;
if ($new_push > 30) // OK, let's give up
$new_push = 0;
q("UPDATE `push_subscriber` SET `push` = %d WHERE id = %d",
$new_push,
intval($rr['id']));
}
}
}