/* * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The OpenAirInterface Software Alliance licenses this file to You under * the OAI Public License, Version 1.1 (the "License"); you may not use this file * except in compliance with the License. * You may obtain a copy of the License at * * http://www.openairinterface.org/?page_id=698 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *------------------------------------------------------------------------------- * For more information about the OpenAirInterface (OAI) Software Alliance: * contact@openairinterface.org */ /*! \file x2ap_eNB_decoder.c * \brief x2ap decoder procedures for eNB * \author Konstantinos Alexandris <Konstantinos.Alexandris@eurecom.fr>, Cedric Roux <Cedric.Roux@eurecom.fr>, Navid Nikaein <Navid.Nikaein@eurecom.fr> * \date 2018 * \version 1.0 */ #include <stdio.h> #include "assertions.h" #include "intertask_interface.h" #include "x2ap_common.h" #include "x2ap_eNB_decoder.h" static int x2ap_eNB_decode_initiating_message(X2AP_X2AP_PDU_t *pdu) { DevAssert(pdu != NULL); switch(pdu->choice.initiatingMessage.procedureCode) { case X2AP_ProcedureCode_id_x2Setup: //asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_X2AP_X2AP_PDU, pdu); X2AP_INFO("x2ap_eNB_decode_initiating_message!\n"); break; case X2AP_ProcedureCode_id_handoverPreparation: //asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_X2AP_X2AP_PDU, pdu); X2AP_INFO("x2ap_eNB_decode_initiating_message!\n"); break; case X2AP_ProcedureCode_id_uEContextRelease: //asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_X2AP_X2AP_PDU, pdu); X2AP_INFO("x2ap_eNB_decode_initiating_message!\n"); break; default: X2AP_ERROR("Unknown procedure ID (%d) for initiating message\n", (int)pdu->choice.initiatingMessage.procedureCode); AssertFatal( 0, "Unknown procedure ID (%d) for initiating message\n", (int)pdu->choice.initiatingMessage.procedureCode); return -1; } return 0; } static int x2ap_eNB_decode_successful_outcome(X2AP_X2AP_PDU_t *pdu) { DevAssert(pdu != NULL); switch(pdu->choice.successfulOutcome.procedureCode) { case X2AP_ProcedureCode_id_x2Setup: //asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_X2AP_X2AP_PDU, pdu); X2AP_INFO("x2ap_eNB_decode_successfuloutcome_message!\n"); break; case X2AP_ProcedureCode_id_handoverPreparation: //asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_X2AP_X2AP_PDU, pdu); X2AP_INFO("x2ap_eNB_decode_successfuloutcome_message!\n"); break; default: X2AP_ERROR("Unknown procedure ID (%d) for successfull outcome message\n", (int)pdu->choice.successfulOutcome.procedureCode); return -1; } return 0; } static int x2ap_eNB_decode_unsuccessful_outcome(X2AP_X2AP_PDU_t *pdu) { DevAssert(pdu != NULL); switch(pdu->choice.unsuccessfulOutcome.procedureCode) { case X2AP_ProcedureCode_id_x2Setup: //asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_X2AP_X2AP_PDU, pdu); X2AP_INFO("x2ap_eNB_decode_unsuccessfuloutcome_message!\n"); break; default: X2AP_ERROR("Unknown procedure ID (%d) for unsuccessfull outcome message\n", (int)pdu->choice.unsuccessfulOutcome.procedureCode); return -1; } return 0; } int x2ap_eNB_decode_pdu(X2AP_X2AP_PDU_t *pdu, const uint8_t *const buffer, uint32_t length) { asn_dec_rval_t dec_ret; DevAssert(buffer != NULL); dec_ret = aper_decode(NULL, &asn_DEF_X2AP_X2AP_PDU, (void **)&pdu, buffer, length, 0, 0); if (asn1_xer_print) { xer_fprint(stdout, &asn_DEF_X2AP_X2AP_PDU, pdu); } if (dec_ret.code != RC_OK) { X2AP_ERROR("Failed to decode pdu\n"); return -1; } switch(pdu->present) { case X2AP_X2AP_PDU_PR_initiatingMessage: return x2ap_eNB_decode_initiating_message(pdu); case X2AP_X2AP_PDU_PR_successfulOutcome: return x2ap_eNB_decode_successful_outcome(pdu); case X2AP_X2AP_PDU_PR_unsuccessfulOutcome: return x2ap_eNB_decode_unsuccessful_outcome(pdu); default: X2AP_DEBUG("Unknown presence (%d) or not implemented\n", (int)pdu->present); break; } return -1; }