From: Charles-Henri Bruyand <charles-henri.bruyand@open-xchange.com>
Date: Wed, 2 May 2018 14:18:50 +0000 (+0200)
Subject: check if parameter has been submitted before accessing it
X-Git-Tag: dnsdist-1.3.1~108^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=refs%2Fpull%2F6562%2Fhead;p=thirdparty%2Fpdns.git

check if parameter has been submitted before accessing it
---

diff --git a/pdns/ws-recursor.cc b/pdns/ws-recursor.cc
index a9991dfefe..d3e357e76f 100644
--- a/pdns/ws-recursor.cc
+++ b/pdns/ws-recursor.cc
@@ -373,7 +373,7 @@ static void apiServerCacheFlush(HttpRequest* req, HttpResponse* resp) {
     throw HttpMethodNotAllowedException();
 
   DNSName canon = apiNameToDNSName(req->getvars["domain"]);
-  bool subtree = (req->getvars["subtree"].compare("true") == 0);
+  bool subtree = (req->getvars.count("subtree") > 0 && req->getvars["subtree"].compare("true") == 0);
 
   int count = broadcastAccFunction<uint64_t>(boost::bind(pleaseWipeCache, canon, subtree));
   count += broadcastAccFunction<uint64_t>(boost::bind(pleaseWipePacketCache, canon, subtree));