auth: Clear the TSIG algo between iterations in the API

Otherwise `GSQLBackend::getTSIGKey()` will try to match the
algorithm in `keyAlgo` if it's set, which will prevent retrieving
a key with a different algorithm that the previous one.

diff --git a/pdns/ws-auth.cc b/pdns/ws-auth.cc
index 85d64d7752f44383bf036c182c1f0b774927fac4..a7a2850b4b24969e8086831cb911d1b96d963617 100644 (file)
--- a/pdns/ws-auth.cc
+++ b/pdns/ws-auth.cc
@@ -778,10 +778,10 @@ static void updateDomainSettingsFromDocument(UeberBackend& B, const DomainInfo&
 
   if (!document["master_tsig_key_ids"].is_null()) {
     vector<string> metadata;
-    DNSName keyAlgo;
-    string keyContent;
     for(auto value : document["master_tsig_key_ids"].array_items()) {
       auto keyname(apiZoneIdToName(value.string_value()));
+      DNSName keyAlgo;
+      string keyContent;
       B.getTSIGKey(keyname, &keyAlgo, &keyContent);
       if (keyAlgo.empty() || keyContent.empty()) {
         throw ApiException("A TSIG key with the name '"+keyname.toLogString()+"' does not exist");
@@ -794,10 +794,10 @@ static void updateDomainSettingsFromDocument(UeberBackend& B, const DomainInfo&
   }
   if (!document["slave_tsig_key_ids"].is_null()) {
     vector<string> metadata;
-    DNSName keyAlgo;
-    string keyContent;
     for(auto value : document["slave_tsig_key_ids"].array_items()) {
       auto keyname(apiZoneIdToName(value.string_value()));
+      DNSName keyAlgo;
+      string keyContent;
       B.getTSIGKey(keyname, &keyAlgo, &keyContent);
       if (keyAlgo.empty() || keyContent.empty()) {
         throw ApiException("A TSIG key with the name '"+keyname.toLogString()+"' does not exist");