Logging message added

[friendica.git] / include / gprobe.php

diff --git a/include/gprobe.php b/include/gprobe.php
index 52c5483c87c2ef213f114fb88b5aa38a33f69f3c..03cdbd072ba6debb9e5e03ef3b5468d2e58a3d10 100644 (file)
--- a/include/gprobe.php
+++ b/include/gprobe.php
@@ -41,7 +41,23 @@ function gprobe_run(&$argv, &$argc){
 
        if(! count($r)) {
 
+               // Is it a DDoS attempt?
+               $urlparts = parse_url($url);
+
+               $result = Cache::get("gprobe:".$urlparts["host"]);
+               if (!is_null($result)) {
+                       $result = unserialize($result);
+                       if ($result["network"] == NETWORK_FEED) {
+                               logger("DDoS attempt detected for ".$urlparts["host"]." by ".$_SERVER["REMOTE_ADDR"].". server data: ".print_r($_SERVER, true), LOGGER_DEBUG);
+                               return;
+                       }
+               }
+
                $arr = probe_url($url);
+
+               if (is_null($result))
+                       Cache::set("gprobe:".$urlparts["host"],serialize($arr));
+
                if(count($arr) && x($arr,'network') && $arr['network'] === NETWORK_DFRN) {
                        q("insert into `gcontact` (`name`,`url`,`nurl`,`photo`)
                                values ( '%s', '%s', '%s', '%s') ",