check for zero'd rc

llarp/dht/localrouterlookup.cpp

@@ -43,7 +43,11 @@ namespace llarp
             found = rc;
         }
         valuesFound.clear();
-        valuesFound.emplace_back(found);
+        if(not found.pubkey.IsZero())
+        {
+          valuesFound.resize(1);
+          valuesFound[0] = found;
+        }
       }
       routing::DHTMessage msg;
       msg.M.emplace_back(new GotRouterMessage(parent->OurKey(), whoasked.txid,

llarp/dht/messages/findrouter.cpp

@@ -167,7 +167,12 @@ namespace llarp
         return false;
       }
       RouterContact found;
-      const Key_t k{K};
+      if(K.IsZero())
+      {
+        llarp::LogError("invalid FRM from ", From, "K is zero");
+        return false;
+      }
+      const Key_t k(K);
       if(exploritory)
         return dht.HandleExploritoryRouterLookup(From, txid, K, replies);
       if(!dht.GetRouter()->ConnectionToRouterAllowed(K))

llarp/dht/messages/gotrouter.cpp

@@ -113,6 +113,8 @@ namespace llarp
         LogDebug("got ", R.size(), " results in GRM for lookup");
         if(R.size() == 0)
           dht.pendingRouterLookups().NotFound(owner, K);
+        else if(R[0].pubkey.IsZero())
+          return false;
         else
           dht.pendingRouterLookups().Found(owner, R[0].pubkey, R);
         return true;

llarp/service/endpoint.cpp

@@ -733,11 +733,11 @@ namespace llarp
     {
       if(msg->R.size())
       {
-        auto* job         = new llarp_async_verify_rc;
-        job->nodedb       = Router()->nodedb();
-        job->cryptoworker = Router()->threadpool();
-        job->diskworker   = Router()->diskworker();
-        job->logic        = Router()->logic();
+        llarp_async_verify_rc* job = new llarp_async_verify_rc();
+        job->nodedb                = Router()->nodedb();
+        job->cryptoworker          = Router()->threadpool();
+        job->diskworker            = Router()->diskworker();
+        job->logic                 = Router()->logic();
         job->hook = std::bind(&Endpoint::HandleVerifyGotRouter, this, msg,
                               std::placeholders::_1);
         job->rc   = msg->R[0];