236 lines
8.1 KiB
C
236 lines
8.1 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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/*! \file f1ap_decoder.c
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* \brief f1ap pdu decode procedures
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* \author EURECOM/NTUST
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* \date 2018
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* \version 0.1
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* \company Eurecom
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* \email: navid.nikaein@eurecom.fr, bing-kai.hong@eurecom.fr
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* \note
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* \warning
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*/
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#include <stdio.h>
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#include "assertions.h"
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#include "intertask_interface.h"
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#include "f1ap_common.h"
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#include "f1ap_ies_defs.h"
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#include "f1ap_decoder.h"
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static int f1ap_decode_initiating_message(f1ap_message *message,
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F1ap_InitiatingMessage_t *initiating_p)
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{
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int ret = -1;
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MessageDef *message_p;
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char *message_string = NULL;
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size_t message_string_size;
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MessagesIds message_id;
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DevAssert(initiating_p != NULL);
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message_string = calloc(10000, sizeof(char));
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f1ap_string_total_size = 0;
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message->procedureCode = initiating_p->procedureCode;
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message->criticality = initiating_p->criticality;
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switch(initiating_p->procedureCode) {
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case F1ap_ProcedureCode_id_InitialContextSetup:
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ret = f1ap_decode_f1ap_initialcontextsetuprequesties(
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&message->msg.f1ap_InitialContextSetupRequestIEs, &initiating_p->value);
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f1ap_xer_print_f1ap_initialcontextsetuprequest(f1ap_xer__print2sp, message_string, message);
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message_id = F1AP_INITIAL_CONTEXT_SETUP_LOG;
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message_string_size = strlen(message_string);
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message_p = itti_alloc_new_message_sized(TASK_F1AP,
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message_id,
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message_string_size + sizeof (IttiMsgText));
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message_p->ittiMsg.f1ap_initial_context_setup_log.size = message_string_size;
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memcpy(&message_p->ittiMsg.f1ap_initial_context_setup_log.text, message_string, message_string_size);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(message_string);
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break;
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case F1ap_ProcedureCode_id_UEContextRelease:
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ret = f1ap_decode_f1ap_uecontextreleasecommandies(
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&message->msg.f1ap_UEContextReleaseCommandIEs, &initiating_p->value);
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f1ap_xer_print_f1ap_uecontextreleasecommand(f1ap_xer__print2sp, message_string, message);
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message_id = F1AP_UE_CONTEXT_RELEASE_COMMAND_LOG;
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message_string_size = strlen(message_string);
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message_p = itti_alloc_new_message_sized(TASK_F1AP,
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message_id,
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message_string_size + sizeof (IttiMsgText));
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message_p->ittiMsg.f1ap_ue_context_release_command_log.size = message_string_size;
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memcpy(&message_p->ittiMsg.f1ap_ue_context_release_command_log.text, message_string, message_string_size);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(message_string);
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break;
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case F1ap_ProcedureCode_id_ErrorIndication:
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ret = f1ap_decode_f1ap_errorindicationies(
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&message->msg.f1ap_ErrorIndicationIEs, &initiating_p->value);
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f1ap_xer_print_f1ap_errorindication(f1ap_xer__print2sp, message_string, message);
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message_id = F1AP_E_RAB_ERROR_INDICATION_LOG;
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message_string_size = strlen(message_string);
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message_p = itti_alloc_new_message_sized(TASK_F1AP,
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message_id,
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message_string_size + sizeof (IttiMsgText));
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message_p->ittiMsg.f1ap_e_rab_release_request_log.size = message_string_size;
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memcpy(&message_p->ittiMsg.f1ap_error_indication_log.text, message_string, message_string_size);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(message_string);
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F1AP_INFO("ErrorIndication initiating message\n");
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break;
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default:
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F1AP_ERROR("Unknown procedure ID (%d) for initiating message\n",
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(int)initiating_p->procedureCode);
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AssertFatal( 0 , "Unknown procedure ID (%d) for initiating message\n",
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(int)initiating_p->procedureCode);
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return -1;
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}
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return ret;
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}
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static int f1ap_decode_successful_outcome(f1ap_message *message,
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F1ap_SuccessfulOutcome_t *successfullOutcome_p)
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{
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int ret = -1;
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MessageDef *message_p;
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char *message_string = NULL;
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size_t message_string_size;
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MessagesIds message_id;
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DevAssert(successfullOutcome_p != NULL);
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message_string = malloc(sizeof(char) * 10000);
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memset((void*)message_string,0,sizeof(char) * 10000);
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f1ap_string_total_size = 0;
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message->procedureCode = successfullOutcome_p->procedureCode;
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message->criticality = successfullOutcome_p->criticality;
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switch(successfullOutcome_p->procedureCode) {
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case F1ap_ProcedureCode_id_F1Setup:
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ret = f1ap_decode_f1ap_f1setupresponseies(
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&message->msg.f1ap_F1SetupResponseIEs, &successfullOutcome_p->value);
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f1ap_xer_print_f1ap_f1setupresponse(f1ap_xer__print2sp, message_string, message);
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message_id = F1AP_F1_SETUP_LOG;
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break;
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default:
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F1AP_ERROR("Unknown procedure ID (%d) for successfull outcome message\n",
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(int)successfullOutcome_p->procedureCode);
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return -1;
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}
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message_string_size = strlen(message_string);
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message_p = itti_alloc_new_message_sized(TASK_F1AP, message_id, message_string_size + sizeof (IttiMsgText));
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message_p->ittiMsg.f1ap_f1_setup_log.size = message_string_size;
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memcpy(&message_p->ittiMsg.f1ap_f1_setup_log.text, message_string, message_string_size);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(message_string);
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return ret;
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}
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static int f1ap_decode_unsuccessful_outcome(f1ap_message *message,
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F1ap_UnsuccessfulOutcome_t *unSuccessfullOutcome_p)
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{
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int ret = -1;
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DevAssert(unSuccessfullOutcome_p != NULL);
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message->procedureCode = unSuccessfullOutcome_p->procedureCode;
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message->criticality = unSuccessfullOutcome_p->criticality;
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switch(unSuccessfullOutcome_p->procedureCode) {
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case F1ap_ProcedureCode_id_F1Setup:
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return f1ap_decode_f1ap_f1setupfailureies(
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&message->msg.f1ap_F1SetupFailureIEs, &unSuccessfullOutcome_p->value);
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default:
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F1AP_ERROR("Unknown procedure ID (%d) for unsuccessfull outcome message\n",
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(int)unSuccessfullOutcome_p->procedureCode);
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break;
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}
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return ret;
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}
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int f1ap_decode_pdu(f1ap_message *message, const uint8_t * const buffer,
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const uint32_t length)
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{
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F1AP_PDU_t pdu;
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F1AP_PDU_t *pdu_p = &pdu;
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asn_dec_rval_t dec_ret;
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DevAssert(buffer != NULL);
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memset((void *)pdu_p, 0, sizeof(F1AP_PDU_t));
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dec_ret = aper_decode(NULL,
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&asn_DEF_F1AP_PDU,
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(void **)&pdu_p,
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buffer,
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length,
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0,
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0);
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if (dec_ret.code != RC_OK) {
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F1AP_ERROR("Failed to decode pdu\n");
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return -1;
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}
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message->direction = pdu_p->present;
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switch(pdu_p->present) {
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case F1AP_F1AP_PDU_PR_initiatingMessage:
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return f1ap_decode_initiating_message(message,
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&pdu_p->choice.initiatingMessage);
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case F1AP_F1AP_PDU_PR_successfulOutcome:
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return f1ap_decode_successful_outcome(message,
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&pdu_p->choice.successfulOutcome);
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case F1AP_F1AP_PDU_PR_unsuccessfulOutcome:
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return f1ap_decode_unsuccessful_outcome(message,
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&pdu_p->choice.unsuccessfulOutcome);
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default:
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F1AP_DEBUG("Unknown presence (%d) or not implemented\n", (int)pdu_p->present);
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break;
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}
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return -1;
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}
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