ttcn3: fix uncaught exception in SS

fix accessing child element in parsed Json without checking
its existence.

srsue/test/ttcn3/hdr/ttcn3_drb_interface.h

@@ -104,7 +104,7 @@ private:
          ++itr) {
       assert(itr->HasMember("PduSduList"));
       assert((*itr)["PduSduList"].IsObject());
-      assert((*itr)["PduSduList"].HasMember("PdcpSdu"));
+      if ((*itr)["PduSduList"].HasMember("PdcpSdu")) {
         assert((*itr)["PduSduList"]["PdcpSdu"].IsArray());
         const Value& sdulist = (*itr)["PduSduList"]["PdcpSdu"];
         for (Value::ConstValueIterator sdu_itr = sdulist.Begin(); sdu_itr != sdulist.End(); ++sdu_itr) {
@@ -114,6 +114,11 @@ private:
           octstr.from_string(sdustr);
           handle_sdu(document, lcid, octstr.data(), octstr.size(), ttcn3_helpers::get_follow_on_flag(document));
         }
+      } else if ((*itr)["PduSduList"].HasMember("MacPdu")) {
+        log->warning("Not handling MacPdu type.");
+      } else {
+        log->warning("Not handling this PduSdu type.\n");
+      }
     }
 
     return SRSLTE_SUCCESS;

srsue/test/ttcn3/hdr/ttcn3_sys_interface.h

@@ -374,12 +374,14 @@ private:
         const Value& config = (*itr)["Config"];
         if (config.HasMember("AddOrReconfigure")) {
           const Value& aor  = config["AddOrReconfigure"];
+          if (aor.HasMember("LogicalChannelId")) {
             uint32_t lcid = aor["LogicalChannelId"].GetInt();
             if (lcid > 0) {
               pdcp_config_t pdcp_cfg = make_drb_pdcp_config_t(static_cast<uint8_t>(lcid), false);
               syssim->add_drb(
                   ttcn3_helpers::get_timing_info(document), ttcn3_helpers::get_cell_name(document), lcid, pdcp_cfg);
             }
+          }
         } else if (config.HasMember("Release")) {
           uint32_t lcid = id["Drb"].GetInt() + 2;
           syssim->del_drb(ttcn3_helpers::get_timing_info(document), ttcn3_helpers::get_cell_name(document), lcid);