fix issue when an internal error happens

src/smf_app/smf_app.hpp

@@ -620,6 +620,7 @@ class smf_app {
    * @param [const uint32_t &] http_code: Status code of HTTP response
    * @param [const oai::smf_server::model::SmContextCreateError &] smContextCreateError: store the json content of response message
    * @param [uint32_t &] promise_id: Promise Id
+   * @param [uint8_t] msg_type: Type of HTTP message (Update/Release)
    * @return void
    */
   void trigger_http_response(
@@ -633,6 +634,7 @@ class smf_app {
    * @param [const oai::smf_server::model::SmContextUpdateError &] smContextUpdateError: store the json content of response message
    * @param [const std::string &] n1_sm_msg: N1 SM message
    * @param [uint32_t &] promise_id: Promise Id
+   * @param [uint8_t] msg_type: Type of HTTP message (Update/Release)
    * @return void
    */
   void trigger_http_response(
@@ -644,7 +646,7 @@ class smf_app {
    * To trigger the response to the HTTP server by set the value of the corresponding promise to ready
    * @param [const uint32_t &] http_code: Status code of HTTP response
    * @param [uint32_t &] promise_id: Promise Id
-   * @param [uint8_t] msg_type
+   * @param [uint8_t] msg_type: Type of HTTP message (Create/Update/Release)
    * @return void
    */
   void trigger_http_response(const uint32_t &http_code, uint32_t &promise_id,

src/smf_app/smf_n1_n2.cpp

@@ -68,7 +68,7 @@ using namespace smf;
 extern smf_app *smf_app_inst;
 
 //-----------------------------------------------------------------------------------------------------
-void smf_n1_n2::create_n1_sm_container(pdu_session_msg &msg,
+bool smf_n1_n2::create_n1_sm_container(pdu_session_msg &msg,
                                        uint8_t n1_msg_type,
                                        std::string &nas_msg_str,
                                        cause_value_5gsm_e sm_cause) {
@@ -103,7 +103,7 @@ void smf_n1_n2::create_n1_sm_container(pdu_session_msg &msg,
         Logger::smf_app().error(
             "Cannot create an PDU Session Establishment Accept for this message (type %d)",
             msg.get_msg_type());
-        return;
+        return false;
       }
 
       pdu_session_create_sm_context_response &sm_context_res =
@@ -112,6 +112,13 @@ void smf_n1_n2::create_n1_sm_container(pdu_session_msg &msg,
       //get default QoS value
       qos_flow_context_updated qos_flow = { };
       qos_flow = sm_context_res.get_qos_flow_context();
+      //check the QoS Flow
+      if ((qos_flow.qfi.qfi < QOS_FLOW_IDENTIFIER_FIRST )
+          or (qos_flow.qfi.qfi > QOS_FLOW_IDENTIFIER_LAST )) {
+        //error
+        Logger::smf_app().error("Incorrect QFI %d", qos_flow.qfi.qfi);
+        return false;
+      }
 
       Logger::smf_app().info(
           "PDU_SESSION_ESTABLISHMENT_ACCEPT, encode starting...");
@@ -149,6 +156,7 @@ void smf_n1_n2::create_n1_sm_container(pdu_session_msg &msg,
       //authorized QoS rules of the PDU session: QOSRules (Section 6.2.5@3GPP TS 24.501)
       //(Section 6.4.1.3@3GPP TS 24.501 V16.1.0) Make sure that the number of the packet filters used in the authorized QoS rules of the PDU Session does not
       // exceed the maximum number of packet filters supported by the UE for the PDU session
+      if (qos_flow.qos_rules.size() > 0) {
         sm_msg->pdu_session_establishment_accept.qosrules.lengthofqosrulesie =
             qos_flow.qos_rules.size();
         sm_msg->pdu_session_establishment_accept.qosrules.qosrulesie =
@@ -158,10 +166,12 @@ void smf_n1_n2::create_n1_sm_container(pdu_session_msg &msg,
         for (auto rule : qos_flow.qos_rules) {
           sm_msg->pdu_session_establishment_accept.qosrules.qosrulesie[i]
               .qosruleidentifer = rule.second.qosruleidentifer;
-        memcpy(&sm_msg->pdu_session_establishment_accept.qosrules.qosrulesie[i],
+          memcpy(
+              &sm_msg->pdu_session_establishment_accept.qosrules.qosrulesie[i],
               &rule.second, sizeof(QOSRulesIE));
           i++;
         }
+      }
 
       //SessionAMBR
       Logger::smf_app().debug("Get default values for Session-AMBR");
@@ -179,7 +189,7 @@ void smf_n1_n2::create_n1_sm_container(pdu_session_msg &msg,
       } else {
         Logger::smf_app().warn(
             "SMF context with SUPI " SUPI_64_FMT " does not exist!", supi64);
-        //TODO:
+        return false;
       }
 
       //Presence
@@ -298,8 +308,11 @@ void smf_n1_n2::create_n1_sm_container(pdu_session_msg &msg,
       nas_msg_str = n1Message;
 
       //free memory
+      if (qos_flow.qos_rules.size() > 0) {
         free_wrapper(
-          (void**) &sm_msg->pdu_session_establishment_accept.qosrules.qosrulesie);
+            (void**) &sm_msg->pdu_session_establishment_accept.qosrules
+                .qosrulesie);
+      }
       free_wrapper(
           (void**) &sm_msg->pdu_session_establishment_accept.qosflowdescriptions
               .qosflowdescriptionscontents);
@@ -434,7 +447,7 @@ void smf_n1_n2::create_n1_sm_container(pdu_session_msg &msg,
       } else {
         Logger::smf_app().warn(
             "SMF context with SUPI " SUPI_64_FMT " does not exist!", supi64);
-        //TODO:
+        return false;
       }
 
       bool find_dnn = sc.get()->find_dnn_context(sm_context_res.get_snssai(),
@@ -447,8 +460,7 @@ void smf_n1_n2::create_n1_sm_container(pdu_session_msg &msg,
       if (!find_dnn or !find_pdu) {
         //error
         Logger::smf_app().warn("DNN or PDU session context does not exist!");
-        //TODO:
-        return;
+        return false;
       }
 
       //PTI
@@ -475,6 +487,10 @@ void smf_n1_n2::create_n1_sm_container(pdu_session_msg &msg,
       std::vector<QOSRulesIE> qos_rules;
       sp.get()->get_qos_rules_to_be_synchronised(qos_rules);
 
+      if (qos_rules.size() == 0) {
+        return false;
+      }
+
       sm_msg->pdu_session_modification_command.qosrules.lengthofqosrulesie =
           qos_rules.size();
 
@@ -630,7 +646,7 @@ void smf_n1_n2::create_n1_sm_container(pdu_session_msg &msg,
 }
 
 //------------------------------------------------------------------------------
-void smf_n1_n2::create_n2_sm_information(pdu_session_msg &msg,
+bool smf_n1_n2::create_n2_sm_information(pdu_session_msg &msg,
                                          uint8_t ngap_msg_type,
                                          n2_sm_info_type_e ngap_ie_type,
                                          std::string &ngap_msg_str) {
@@ -684,6 +700,10 @@ void smf_n1_n2::create_n2_sm_information(pdu_session_msg &msg,
               qos_flows.begin(); it != qos_flows.end(); ++it)
             Logger::smf_app().debug("QoS Flow context to be updated QFI %d",
                                     it->first);
+
+          if (qos_flows.empty()) {
+            return false;
+          }
           //TODO: support only 1 qos flow
           qos_flow = qos_flows.begin()->second;
 
@@ -703,7 +723,15 @@ void smf_n1_n2::create_n2_sm_information(pdu_session_msg &msg,
                                  msg.get_msg_type());
           //TODO:
           free_wrapper((void**) &ngap_IEs);
-          return;
+          return false;
+      }
+
+      //check the QoS Flow
+      if ((qos_flow.qfi.qfi < QOS_FLOW_IDENTIFIER_FIRST )
+          or (qos_flow.qfi.qfi > QOS_FLOW_IDENTIFIER_LAST )) {
+        //error
+        Logger::smf_app().error("Incorrect QFI %d", qos_flow.qfi.qfi);
+        return false;
       }
 
       //PDUSessionAggregateMaximumBitRate
@@ -734,7 +762,7 @@ void smf_n1_n2::create_n2_sm_information(pdu_session_msg &msg,
       } else {
         Logger::smf_app().warn(
             "SMF context with SUPI " SUPI_64_FMT " does not exist!", supi64);
-        //TODO:
+        return false;
       }
 
       ASN_SEQUENCE_ADD(&ngap_IEs->protocolIEs.list,
@@ -888,7 +916,7 @@ void smf_n1_n2::create_n2_sm_information(pdu_session_msg &msg,
         Logger::smf_app().warn(
             "NGAP PDU Session Resource Setup Request Transfer encode failed (encode size %d)",
             encoded_size);
-        return;
+        return false;
       }
 
 #if DEBUG_IS_ON
@@ -948,6 +976,14 @@ void smf_n1_n2::create_n2_sm_information(pdu_session_msg &msg,
       //TODO: support only 1 qos flow
       qos_flow_context_updated qos_flow = qos_flows.begin()->second;
 
+      //check the QoS Flow
+      if ((qos_flow.qfi.qfi < QOS_FLOW_IDENTIFIER_FIRST )
+          or (qos_flow.qfi.qfi > QOS_FLOW_IDENTIFIER_LAST )) {
+        //error
+        Logger::smf_app().error("Incorrect QFI %d", qos_flow.qfi.qfi);
+        return false;
+      }
+
       Logger::smf_app().debug(
           "QoS Flow, UL F-TEID ID " "0x%" PRIx32 ", IP Address %s ",
           qos_flow.ul_fteid.teid_gre_key,
@@ -1164,7 +1200,7 @@ void smf_n1_n2::create_n2_sm_information(pdu_session_msg &msg,
         Logger::smf_app().warn(
             "NGAP PDU Session Resource Modify Request Transfer encode failed (encoded size %d)",
             encoded_size);
-        return;
+        return false;
       }
 
 #if DEBUG_IS_ON
@@ -1288,7 +1324,7 @@ void smf_n1_n2::create_n2_sm_information(pdu_session_msg &msg,
         Logger::smf_app().warn(
             "NGAP PDU Session Resource Setup Response Transfer encode failed (encoded size %d)",
             encoded_size);
-        return;
+        return false;
       }
 
 #if DEBUG_IS_ON
@@ -1398,7 +1434,7 @@ void smf_n1_n2::create_n2_sm_information(pdu_session_msg &msg,
         Logger::smf_app().warn(
             " NGAP PDU Session Resource Modify Response Transfer encode failed (encoded size %d)",
             encoded_size);
-        return;
+        return false;
       }
 
 #if DEBUG_IS_ON
@@ -1474,7 +1510,7 @@ void smf_n1_n2::create_n2_sm_information(pdu_session_msg &msg,
         Logger::smf_app().warn(
             "NGAP PDU Session Release Command encode failed (encoded size %d)",
             encoded_size);
-        return;
+        return false;
       }
 
 #if DEBUG_IS_ON
@@ -1518,7 +1554,7 @@ void smf_n1_n2::create_n2_sm_information(pdu_session_msg &msg,
         Logger::smf_app().warn(
             "NGAP PDU Session Release Command encode failed (encoded size %d)",
             encoded_size);
-        return;
+        return false;
       }
 
 #if DEBUG_IS_ON

src/smf_app/smf_n1_n2.hpp

@@ -78,9 +78,9 @@ class smf_n1_n2 {
    * @param [uint8_t] msg_type Type of N1 message
    * @param [std::string&] nas_msg_str store NAS message in form of string
    * @param [uint8_t] sm_cause store NAS Cause
-   *
+   * @return boolean: True if the NAS message has been created successfully, otherwise return false
    */
-  void create_n1_sm_container(pdu_session_msg &msg, uint8_t msg_type,
+  bool create_n1_sm_container(pdu_session_msg &msg, uint8_t msg_type,
                               std::string &nas_msg_str,
                               cause_value_5gsm_e sm_cause);
 
@@ -89,9 +89,10 @@ class smf_n1_n2 {
    * @param [std::shared_ptr<itti_n11_create_sm_context_response>] sm_context_res
    * @param [uint8_t] msg_type Type of N2 message
    * @param [std::string&] ngap_msg_str store NGAP message in form of string
+   * @return boolean: True if the NGAP message has been created successfully, otherwise return false
    *
    */
-  void create_n2_sm_information(pdu_session_msg &msg, uint8_t ngap_msg_type,
+  bool create_n2_sm_information(pdu_session_msg &msg, uint8_t ngap_msg_type,
                                 n2_sm_info_type_e ngap_ie_type,
                                 std::string &ngap_msg_str);
 

src/smf_app/smf_procedure.cpp

@@ -1034,6 +1034,7 @@ void session_update_sm_context_procedure::handle_itti_msg(
         smf_app_inst->trigger_http_response(
             http_status_code_e::HTTP_STATUS_CODE_403_FORBIDDEN,
             smContextUpdateError, n11_triggered_pending->pid);
+        return;
       }
     }
       break;