open5gs/lib/asn/src/s1ap_common.c

/*
 * 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 Apache License, Version 2.0  (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.apache.org/licenses/LICENSE-2.0
 *
 * 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 s1ap_common.c
   \brief s1ap procedures for both eNB and MME
   \author Sebastien ROUX <sebastien.roux@eurecom.fr>
   \date 2012
   \version 0.1
*/

#include "s1ap_common.h"
#include "S1AP-PDU.h"
#if 0 /* modified by acetcom */
#include "dynamic_memory_check.h"
#include "log.h"
#else
#include "core_debug.h"
#endif

int                                     asn_debug = 0;
int                                     asn1_xer_print = 0;

void free_wrapper(void *ptr)
{
    free(ptr);
    ptr = NULL;
}

ssize_t
s1ap_generate_initiating_message (
  uint8_t ** buffer,
  uint32_t * length,
  e_S1ap_ProcedureCode procedureCode,
  S1ap_Criticality_t criticality,
  asn_TYPE_descriptor_t * td,
  void *sptr)
{
  S1AP_PDU_t                              pdu;
  ssize_t                                 encoded;

  memset (&pdu, 0, sizeof (S1AP_PDU_t));
  pdu.present = S1AP_PDU_PR_initiatingMessage;
  pdu.choice.initiatingMessage.procedureCode = procedureCode;
  pdu.choice.initiatingMessage.criticality = criticality;
  ANY_fromType_aper (&pdu.choice.initiatingMessage.value, td, sptr);

  if (asn1_xer_print) {
    xer_fprint (stdout, &asn_DEF_S1AP_PDU, (void *)&pdu);
  }

  /*
   * We can safely free list of IE from sptr
   */
  ASN_STRUCT_FREE_CONTENTS_ONLY (*td, sptr);

  if ((encoded = aper_encode_to_new_buffer (&asn_DEF_S1AP_PDU, 0, &pdu, (void **)buffer)) < 0) {
      d_error("Encoding of %s failed\n", td->name);
    return -1;
  }

  *length = encoded;
  return encoded;
}

ssize_t
s1ap_generate_successfull_outcome (
  uint8_t ** buffer,
  uint32_t * length,
  e_S1ap_ProcedureCode procedureCode,
  S1ap_Criticality_t criticality,
  asn_TYPE_descriptor_t * td,
  void *sptr)
{
  S1AP_PDU_t                              pdu;
  ssize_t                                 encoded;

  memset (&pdu, 0, sizeof (S1AP_PDU_t));
  pdu.present = S1AP_PDU_PR_successfulOutcome;
  pdu.choice.successfulOutcome.procedureCode = procedureCode;
  pdu.choice.successfulOutcome.criticality = criticality;
  ANY_fromType_aper (&pdu.choice.successfulOutcome.value, td, sptr);

  if (asn1_xer_print) {
    xer_fprint (stdout, &asn_DEF_S1AP_PDU, (void *)&pdu);
  }

  /*
   * We can safely free list of IE from sptr
   */
  ASN_STRUCT_FREE_CONTENTS_ONLY (*td, sptr);

  if ((encoded = aper_encode_to_new_buffer (&asn_DEF_S1AP_PDU, 0, &pdu, (void **)buffer)) < 0) {
    d_error("Encoding of %s failed\n", td->name);
    return -1;
  }

  *length = encoded;
  return encoded;
}

ssize_t
s1ap_generate_unsuccessfull_outcome (
  uint8_t ** buffer,
  uint32_t * length,
  e_S1ap_ProcedureCode procedureCode,
  S1ap_Criticality_t criticality,
  asn_TYPE_descriptor_t * td,
  void *sptr)
{
  S1AP_PDU_t                              pdu;
  ssize_t                                 encoded;

  memset (&pdu, 0, sizeof (S1AP_PDU_t));
  pdu.present = S1AP_PDU_PR_unsuccessfulOutcome;
  pdu.choice.successfulOutcome.procedureCode = procedureCode;
  pdu.choice.successfulOutcome.criticality = criticality;
  ANY_fromType_aper (&pdu.choice.successfulOutcome.value, td, sptr);

  if (asn1_xer_print) {
    xer_fprint (stdout, &asn_DEF_S1AP_PDU, (void *)&pdu);
  }

  /*
   * We can safely free list of IE from sptr
   */
  ASN_STRUCT_FREE_CONTENTS_ONLY (*td, sptr);

  if ((encoded = aper_encode_to_new_buffer (&asn_DEF_S1AP_PDU, 0, &pdu, (void **)buffer)) < 0) {
    d_error("Encoding of %s failed\n", td->name);
    return -1;
  }

  *length = encoded;
  return encoded;
}

S1ap_IE_t                              *
s1ap_new_ie (
  S1ap_ProtocolIE_ID_t id,
  S1ap_Criticality_t criticality,
  asn_TYPE_descriptor_t * type,
  void *sptr)
{
  S1ap_IE_t                              *buff;

  if ((buff = malloc (sizeof (S1ap_IE_t))) == NULL) {
    // Possible error on malloc
    return NULL;
  }

  memset ((void *)buff, 0, sizeof (S1ap_IE_t));
  buff->id = id;
  buff->criticality = criticality;

  if (ANY_fromType_aper (&buff->value, type, sptr) < 0) {
    d_error("Encoding of %s failed\n", type->name);
    free_wrapper (buff);
    return NULL;
  }

  if (asn1_xer_print)
    if (xer_fprint (stdout, &asn_DEF_S1ap_IE, buff) < 0) {
      free_wrapper (buff);
      return NULL;
    }

  return buff;
}

void
s1ap_handle_criticality (
  S1ap_Criticality_t criticality)
{
}