src/Worker/GProbe.php

   1 <?php
   2 /**
   3  * @file src/Worker/GProbe.php
   4  */
   5
   6 namespace Friendica\Worker;
   7
   8 use Friendica\Core\Cache;
   9 use Friendica\Database\DBM;
  10 use Friendica\Model\GContact;
  11 use Friendica\Network\Probe;
  12 use Friendica\Protocol\PortableContact;
  13
  14 class GProbe {
  15         public static function execute($url = '')
  16         {
  17                 if (empty($url)) {
  18                         return;
  19                 }
  20
  21                 $r = q(
  22                         "SELECT `id`, `url`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 1",
  23                         dbesc(normalise_link($url))
  24                 );
  25
  26                 logger("gprobe start for ".normalise_link($url), LOGGER_DEBUG);
  27
  28                 if (!DBM::is_result($r)) {
  29                         // Is it a DDoS attempt?
  30                         $urlparts = parse_url($url);
  31
  32                         $result = Cache::get("gprobe:".$urlparts["host"]);
  33                         if (!is_null($result)) {
  34                                 if (in_array($result["network"], [NETWORK_FEED, NETWORK_PHANTOM])) {
  35                                         logger("DDoS attempt detected for ".$urlparts["host"]." by ".$_SERVER["REMOTE_ADDR"].". server data: ".print_r($_SERVER, true), LOGGER_DEBUG);
  36                                         return;
  37                                 }
  38                         }
  39
  40                         $arr = Probe::uri($url);
  41
  42                         if (is_null($result)) {
  43                                 Cache::set("gprobe:".$urlparts["host"], $arr);
  44                         }
  45
  46                         if (!in_array($arr["network"], [NETWORK_FEED, NETWORK_PHANTOM])) {
  47                                 GContact::update($arr);
  48                         }
  49
  50                         $r = q(
  51                                 "SELECT `id`, `url`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 1",
  52                                 dbesc(normalise_link($url))
  53                         );
  54                 }
  55                 if (DBM::is_result($r)) {
  56                         // Check for accessibility and do a poco discovery
  57                         if (PortableContact::lastUpdated($r[0]['url'], true) && ($r[0]["network"] == NETWORK_DFRN)) {
  58                                 PortableContact::loadWorker(0, 0, $r[0]['id'], str_replace('/profile/', '/poco/', $r[0]['url']));
  59                         }
  60                 }
  61
  62                 logger("gprobe end for ".normalise_link($url), LOGGER_DEBUG);
  63                 return;
  64         }
  65 }