Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @file src/Worker/GProbe.php
*/
namespace Friendica\Worker;
use Friendica\Core\Cache;
use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Database\DBA;
use Friendica\Model\GContact;
use Friendica\Network\Probe;
use Friendica\Protocol\PortableContact;
use Friendica\Util\Strings;
class GProbe {
public static function execute($url = '')
{
if (empty($url)) {
return;
}
$r = q(
"SELECT `id`, `url`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 1",
DBA::escape(Strings::normaliseLink($url))
);
Logger::log("gprobe start for ".Strings::normaliseLink($url), Logger::DEBUG);
if (!DBA::isResult($r)) {
// Is it a DDoS attempt?
$urlparts = parse_url($url);
$result = Cache::get("gprobe:".$urlparts["host"]);
if (!is_null($result)) {
if (in_array($result["network"], [Protocol::FEED, Protocol::PHANTOM])) {
Logger::log("DDoS attempt detected for ".$urlparts["host"]." by ".$_SERVER["REMOTE_ADDR"].". server data: ".print_r($_SERVER, true), Logger::DEBUG);
return;
}
}
$arr = Probe::uri($url);
if (is_null($result)) {
Cache::set("gprobe:".$urlparts["host"], $arr);
}
if (!in_array($arr["network"], [Protocol::FEED, Protocol::PHANTOM])) {
GContact::update($arr);
}
$r = q(
"SELECT `id`, `url`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 1",
DBA::escape(Strings::normaliseLink($url))
);
}
if (DBA::isResult($r)) {
// Check for accessibility and do a poco discovery
if (PortableContact::lastUpdated($r[0]['url'], true) && ($r[0]["network"] == Protocol::DFRN)) {
PortableContact::loadWorker(0, 0, $r[0]['id'], str_replace('/profile/', '/poco/', $r[0]['url']));
}
}
Logger::log("gprobe end for ".Strings::normaliseLink($url), Logger::DEBUG);
return;
}
}