Merge pull request #2112 from rabuzarus/2811_group_side

[friendica.git] / include / gprobe.php

diff --git a/include/gprobe.php b/include/gprobe.php
index 36650eb9ae4d026ae06fe33b5d23a0e262b1d4de..84292f263affb3fb7d6daed93f566674f20f2e38 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 (in_array($result["network"], array(NETWORK_FEED, NETWORK_PHANTOM))) {
+                               logger("DDoS attempt detected for ".$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') && $arr['network'] === NETWORK_DFRN) {
                        q("insert into `gcontact` (`name`,`url`,`nurl`,`photo`)
                                values ( '%s', '%s', '%s', '%s') ",
@@ -63,6 +79,6 @@ function gprobe_run(&$argv, &$argc){
 }
 
 if (array_search(__file__,get_included_files())===0){
-  gprobe_run($argv,$argc);
+  gprobe_run($_SERVER["argv"],$_SERVER["argc"]);
   killme();
 }