/*
* 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.
*-------------------------------------------------------------------------------
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*/
/*! \file f1ap_decoder.c
* \brief f1ap pdu decode procedures
* \author EURECOM/NTUST
* \date 2018
* \version 0.1
* \company Eurecom
* \email: navid.nikaein@eurecom.fr, bing-kai.hong@eurecom.fr
* \note
* \warning
*/
#include "f1ap_common.h"
#include "f1ap_decoder.h"
int asn1_decoder_xer_print = 0;
static int f1ap_decode_initiating_message(F1AP_F1AP_PDU_t *pdu) {
//MessageDef *message_p;
//MessagesIds message_id;
//asn_encode_to_new_buffer_result_t res = { NULL, {0, NULL, NULL} };
DevAssert(pdu != NULL);
switch(pdu->choice.initiatingMessage->procedureCode) {
case F1AP_ProcedureCode_id_F1Setup:
//res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_F1AP_F1AP_PDU, pdu);
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_F1Setup\n", __func__);
break;
case F1AP_ProcedureCode_id_gNBCUConfigurationUpdate:
//res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_F1AP_F1AP_PDU, pdu);
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_gNBCUConfigurationUpdate\n", __func__);
break;
case F1AP_ProcedureCode_id_InitialULRRCMessageTransfer:
//res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_F1AP_F1AP_PDU, pdu);
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_InitialULRRCMessageTransfer\n", __func__);
break;
case F1AP_ProcedureCode_id_DLRRCMessageTransfer:
//res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_F1AP_F1AP_PDU, pdu);
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_DLRRCMessageTransfer\n", __func__);
break;
case F1AP_ProcedureCode_id_ULRRCMessageTransfer:
//res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_F1AP_F1AP_PDU, pdu);
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_ULRRCMessageTransfer\n", __func__);
break;
case F1AP_ProcedureCode_id_UEContextRelease:
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_UEContextRelease\n", __func__);
break;
case F1AP_ProcedureCode_id_UEContextReleaseRequest:
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_UEContextReleaseRequest\n", __func__);
break;
case F1AP_ProcedureCode_id_UEContextSetup:
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_UEContextSetup\n", __func__);
break;
case F1AP_ProcedureCode_id_UEContextModification:
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_UEContextModification\n", __func__);
break;
case F1AP_ProcedureCode_id_Paging:
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_Paging\n", __func__);
break;
// case F1AP_ProcedureCode_id_InitialContextSetup:
// res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_F1AP_F1AP_PDU, pdu);
// message_id = F1AP_INITIAL_CONTEXT_SETUP_LOG;
// message_p = itti_alloc_new_message_sized(TASK_F1AP, message_id,
// res.result.encoded + sizeof (IttiMsgText));
// message_p->ittiMsg.f1ap_initial_context_setup_log.size = res.result.encoded;
// memcpy(&message_p->ittiMsg.f1ap_initial_context_setup_log.text, res.buffer, res.result.encoded);
// itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
// free(res.buffer);
// break;
default:
// F1AP_ERROR("Unknown procedure ID (%d) for initiating message\n",
// (int)pdu->choice.initiatingMessage->procedureCode);
LOG_E(F1AP, "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 f1ap_decode_successful_outcome(F1AP_F1AP_PDU_t *pdu) {
DevAssert(pdu != NULL);
switch(pdu->choice.successfulOutcome->procedureCode) {
case F1AP_ProcedureCode_id_F1Setup:
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_F1Setup\n", __func__);
break;
case F1AP_ProcedureCode_id_gNBCUConfigurationUpdate:
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_gNBCUConfigurationUpdate\n", __func__);
break;
case F1AP_ProcedureCode_id_UEContextRelease:
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_UEContextRelease\n", __func__);
break;
case F1AP_ProcedureCode_id_UEContextSetup:
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_UEContextSetup\n", __func__);
break;
case F1AP_ProcedureCode_id_UEContextModification:
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_UEContextModification\n", __func__);
break;
default:
LOG_E(F1AP,"Unknown procedure ID (%d) for successfull outcome message\n",
(int)pdu->choice.successfulOutcome->procedureCode);
return -1;
}
return 0;
}
static int f1ap_decode_unsuccessful_outcome(F1AP_F1AP_PDU_t *pdu) {
DevAssert(pdu != NULL);
switch(pdu->choice.unsuccessfulOutcome->procedureCode) {
case F1AP_ProcedureCode_id_F1Setup:
LOG_D(F1AP, "%s(): F1AP_ProcedureCode_id_F1Setup\n", __func__);
break;
default:
// F1AP_ERROR("Unknown procedure ID (%d) for unsuccessfull outcome message\n",
// (int)pdu->choice.unsuccessfulOutcome->procedureCode);
LOG_E(F1AP, "Unknown procedure ID (%d) for unsuccessfull outcome message\n",
(int)pdu->choice.unsuccessfulOutcome->procedureCode);
return -1;
}
return 0;
}
int f1ap_decode_pdu(F1AP_F1AP_PDU_t *pdu, const uint8_t *const buffer, uint32_t length) {
asn_dec_rval_t dec_ret;
DevAssert(buffer != NULL);
asn_codec_ctx_t st={.max_stack_size = 100 * 1000};
dec_ret = aper_decode(&st,
&asn_DEF_F1AP_F1AP_PDU,
(void **)&pdu,
buffer,
length,
0,
0);
if (asn1_decoder_xer_print) {
LOG_E(F1AP, "----------------- ASN1 DECODER PRINT START----------------- \n");
xer_fprint(stdout, &asn_DEF_F1AP_F1AP_PDU, pdu);
LOG_E(F1AP, "----------------- ASN1 DECODER PRINT END ----------------- \n");
}
if (dec_ret.code != RC_OK) {
AssertFatal(1==0,"Failed to decode pdu\n");
return -1;
}
switch(pdu->present) {
case F1AP_F1AP_PDU_PR_initiatingMessage:
return f1ap_decode_initiating_message(pdu);
case F1AP_F1AP_PDU_PR_successfulOutcome:
return f1ap_decode_successful_outcome(pdu);
case F1AP_F1AP_PDU_PR_unsuccessfulOutcome:
return f1ap_decode_unsuccessful_outcome(pdu);
default:
LOG_E(F1AP, "Unknown presence (%d) or not implemented\n", (int)pdu->present);
break;
}
return -1;
}