195 lines
6.7 KiB
C
195 lines
6.7 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 m2ap_decoder.c
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* \brief m2ap decoder procedures
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* \author Javier Morgade <javier.morgade@ieee.org>
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* \date 2019
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* \version 0.1
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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 "m2ap_common.h"
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#include "m2ap_decoder.h"
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static int m2ap_decode_initiating_message(M2AP_M2AP_PDU_t *pdu)
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{
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DevAssert(pdu != NULL);
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switch(pdu->choice.initiatingMessage.procedureCode) {
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case M2AP_ProcedureCode_id_sessionStart:
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//asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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M2AP_INFO("m2ap__decode_initiating_message!\n");
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break;
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case M2AP_ProcedureCode_id_sessionStop:
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//asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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M2AP_INFO("m2ap__decode_initiating_message!\n");
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break;
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case M2AP_ProcedureCode_id_m2Setup:
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//asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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M2AP_INFO("m2ap__decode_initiating_message!\n");
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break;
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case M2AP_ProcedureCode_id_mbmsSchedulingInformation:
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//asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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M2AP_INFO("m2ap__decode_initiating_message!\n");
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break;
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// case M2AP_ProcedureCode_id_handoverPreparation:
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// //asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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// M2AP_INFO("m2ap__decode_initiating_message!\n");
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// break;
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//
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// case M2AP_ProcedureCode_id_uEContextRelease:
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// //asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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// M2AP_INFO("m2ap__decode_initiating_message!\n");
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// break;
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//
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// case M2AP_ProcedureCode_id_handoverCancel:
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// //asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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// M2AP_INFO("m2ap__decode_initiating_message!\n");
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// break;
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//
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default:
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M2AP_ERROR("Unknown procedure ID (%d) for initiating message\n",
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(int)pdu->choice.initiatingMessage.procedureCode);
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AssertFatal( 0, "Unknown procedure ID (%d) for initiating message\n",
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(int)pdu->choice.initiatingMessage.procedureCode);
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return -1;
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}
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return 0;
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}
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static int m2ap_decode_successful_outcome(M2AP_M2AP_PDU_t *pdu)
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{
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DevAssert(pdu != NULL);
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switch(pdu->choice.successfulOutcome.procedureCode) {
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case M2AP_ProcedureCode_id_sessionStart:
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//asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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M2AP_INFO("m2ap__decode_successfuloutcome_message!\n");
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break;
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case M2AP_ProcedureCode_id_sessionStop:
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//asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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M2AP_INFO("m2ap__decode_succesfuloutcome_message!\n");
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break;
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case M2AP_ProcedureCode_id_m2Setup:
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//asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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M2AP_INFO("m2ap__decode_succesfuloutcome_message!\n");
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break;
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case M2AP_ProcedureCode_id_mbmsSchedulingInformation:
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//asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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M2AP_INFO("m2ap__decode_succesfuloutcome_message!\n");
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break;
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// case M2AP_ProcedureCode_id_handoverPreparation:
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// //asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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// M2AP_INFO("m2ap__decode_successfuloutcome_message!\n");
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// break;
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//
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default:
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M2AP_ERROR("Unknown procedure ID (%d) for successfull outcome message\n",
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(int)pdu->choice.successfulOutcome.procedureCode);
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return -1;
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}
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return 0;
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}
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static int m2ap_decode_unsuccessful_outcome(M2AP_M2AP_PDU_t *pdu)
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{
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DevAssert(pdu != NULL);
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switch(pdu->choice.unsuccessfulOutcome.procedureCode) {
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case M2AP_ProcedureCode_id_sessionStart:
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//asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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M2AP_INFO("m2ap__decode_initiating_message!\n");
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break;
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case M2AP_ProcedureCode_id_sessionStop:
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//asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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M2AP_INFO("m2ap__decode_initiating_message!\n");
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break;
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case M2AP_ProcedureCode_id_m2Setup:
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//asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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M2AP_INFO("m2ap__decode_initiating_message!\n");
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break;
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case M2AP_ProcedureCode_id_mbmsSchedulingInformation:
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//asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_M2AP_M2AP_PDU, pdu);
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M2AP_INFO("m2ap__decode_initiating_message!\n");
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break;
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default:
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M2AP_ERROR("Unknown procedure ID (%d) for unsuccessfull outcome message\n",
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(int)pdu->choice.unsuccessfulOutcome.procedureCode);
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return -1;
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}
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return 0;
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}
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int m2ap_decode_pdu(M2AP_M2AP_PDU_t *pdu, const uint8_t *const buffer, uint32_t length)
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{
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asn_dec_rval_t dec_ret;
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DevAssert(buffer != NULL);
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dec_ret = aper_decode(NULL,
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&asn_DEF_M2AP_M2AP_PDU,
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(void **)&pdu,
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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 (LOG_DEBUGFLAG(DEBUG_ASN1)) {
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xer_fprint(stdout, &asn_DEF_M2AP_M2AP_PDU, pdu);
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}
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if (dec_ret.code != RC_OK) {
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M2AP_ERROR("Failed to decode pdu\n");
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return -1;
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}
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switch(pdu->present) {
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case M2AP_M2AP_PDU_PR_initiatingMessage:
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return m2ap_decode_initiating_message(pdu);
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case M2AP_M2AP_PDU_PR_successfulOutcome:
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return m2ap_decode_successful_outcome(pdu);
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case M2AP_M2AP_PDU_PR_unsuccessfulOutcome:
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return m2ap_decode_unsuccessful_outcome(pdu);
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default:
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M2AP_DEBUG("Unknown presence (%d) or not implemented\n", (int)pdu->present);
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break;
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}
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return -1;
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}
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