friendica-github/src/Worker/GProbe.php

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<?php
/**
* @file src/Worker/GProbe.php
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*/
namespace Friendica\Worker;
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use Friendica\Core\Cache;
use Friendica\Database\DBM;
use Friendica\Model\GContact;
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use Friendica\Network\Probe;
use Friendica\Protocol\PortableContact;
class GProbe {
public static function execute($url = '')
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{
if (empty($url)) {
return;
}
$r = q(
"SELECT `id`, `url`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 1",
dbesc(normalise_link($url))
);
logger("gprobe start for ".normalise_link($url), LOGGER_DEBUG);
if (!DBM::is_result($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"], [NETWORK_FEED, NETWORK_PHANTOM])) {
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logger("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"], [NETWORK_FEED, NETWORK_PHANTOM])) {
GContact::update($arr);
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}
$r = q(
"SELECT `id`, `url`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 1",
dbesc(normalise_link($url))
);
}
if (DBM::is_result($r)) {
// Check for accessibility and do a poco discovery
if (PortableContact::lastUpdated($r[0]['url'], true) && ($r[0]["network"] == NETWORK_DFRN)) {
PortableContact::loadWorker(0, 0, $r[0]['id'], str_replace('/profile/', '/poco/', $r[0]['url']));
}
}
logger("gprobe end for ".normalise_link($url), LOGGER_DEBUG);
return;
}
}