Enable DNS Blocklist (#476)

This PR enables DNS blocklist, and forces it on. This is meant to be a temporary solution to the massive number of outdated nodes. Once the network has stabilized again, DNS blocklist should be disabled by default again.

Co-authored-by: _xxfedexx_ <>
Reviewed-on: #476
Co-authored-by: _XxFedexX_ <_xxfedexx_@noreply.gitgud.wownero.nl>
Co-committed-by: _XxFedexX_ <_xxfedexx_@noreply.gitgud.wownero.nl>

src/checkpoints/checkpoints.cpp

@@ -283,6 +283,7 @@ namespace cryptonote
 
     // All four MoneroPulse domains have DNSSEC on and valid
     static const std::vector<std::string> dns_urls = {
+      "checkpoints.muchwow.lol",
     };
 
     static const std::vector<std::string> testnet_dns_urls = {

src/common/dns_utils.cpp

@@ -526,12 +526,12 @@ bool load_txt_records_from_dns(std::vector<std::string> &good_records, const std
     const std::string &url = dns_urls[cur_index];
     if (!avail[cur_index])
     {
-      records[cur_index].clear();
+      //records[cur_index].clear(); TODO: temp skipped DNSSEC
       LOG_PRINT_L2("DNSSEC not available for hostname: " << url << ", skipping.");
     }
     if (!valid[cur_index])
     {
-      records[cur_index].clear();
+      //records[cur_index].clear(); TODO: temp skipped DNSSEC
       LOG_PRINT_L2("DNSSEC validation failed for hostname: " << url << ", skipping.");
     }
 
@@ -552,7 +552,7 @@ bool load_txt_records_from_dns(std::vector<std::string> &good_records, const std
     }
   }
 
-  if (num_valid_records < 2)
+  if (num_valid_records < 1)
   {
     LOG_PRINT_L2("WARNING: no two valid DNS TXT records were received");
     return false;

src/p2p/net_node.inl

@@ -2012,12 +2012,14 @@ namespace nodetool
   template<class t_payload_net_handler>
   bool node_server<t_payload_net_handler>::update_dns_blocklist()
   {
-    if (!m_enable_dns_blocklist)
+    /*if (!m_enable_dns_blocklist) // TODO: temp forced DNS blocklist
-      return true;
+      return true;*/
     if (m_nettype != cryptonote::MAINNET)
       return true;
 
     static const std::vector<std::string> dns_urls = {
+      "blocklist.wownero.com",
+      "blocklist2.wownero.com",
     };
 
     std::vector<std::string> records;