Add IP blocking for misbehaving nodes (adapted from Boolberry)

src/cryptonote_protocol/cryptonote_protocol_handler.inl

@@ -332,6 +332,7 @@ namespace cryptonote
         LOG_ERROR_CCONTEXT("sent wrong block: failed to parse and validate block: \r\n" 
           << epee::string_tools::buff_to_hex_nodelimer(block_entry.block) << "\r\n dropping connection");
         m_p2p->drop_connection(context);
+        m_p2p->add_ip_fail(context.m_remote_ip);
         return 1;
       }      
       //to avoid concurrency in core between connections, suspend connections which delivered block later then first one
@@ -407,12 +408,14 @@ namespace cryptonote
         {
           LOG_PRINT_CCONTEXT_L0("Block verification failed, dropping connection");
           m_p2p->drop_connection(context);
+	  m_p2p->add_ip_fail(context.m_remote_ip);
           return 1;
         }
         if(bvc.m_marked_as_orphaned)
         {
           LOG_PRINT_CCONTEXT_L0("Block received at sync phase was marked as orphaned, dropping connection");
           m_p2p->drop_connection(context);
+          m_p2p->add_ip_fail(context.m_remote_ip);
           return 1;
         }
 
@@ -534,6 +537,7 @@ namespace cryptonote
     {
       LOG_ERROR_CCONTEXT("sent empty m_block_ids, dropping connection");
       m_p2p->drop_connection(context);
+      m_p2p->add_ip_fail(context.m_remote_ip);
       return 1;
     }
 
@@ -542,6 +546,7 @@ namespace cryptonote
       LOG_ERROR_CCONTEXT("sent m_block_ids starting from unknown id: "
                                               << epee::string_tools::pod_to_hex(arg.m_block_ids.front()) << " , dropping connection");
       m_p2p->drop_connection(context);
+      m_p2p->add_ip_fail(context.m_remote_ip);
       return 1;
     }