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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include "TLVEncoder.h"
#include "TLVDecoder.h"
#include "ServiceRequest.h"
int decode_service_request(service_request_msg *service_request, uint8_t *buffer, uint32_t len)
{
uint32_t decoded = 0;
int decoded_result = 0;
LOG_FUNC_IN;
// Check if we got a NULL pointer and if buffer length is >= minimum length expected for the message.
CHECK_PDU_POINTER_AND_LENGTH_DECODER(buffer, SERVICE_REQUEST_MINIMUM_LENGTH, len);
/* Decoding mandatory fields */
if ((decoded_result = decode_ksi_and_sequence_number(&service_request->ksiandsequencenumber, 0, buffer + decoded, len - decoded)) < 0)
LOG_FUNC_RETURN(decoded_result);
else
decoded += decoded_result;
if ((decoded_result = decode_short_mac(&service_request->messageauthenticationcode, 0, buffer + decoded, len - decoded)) < 0)
LOG_FUNC_RETURN(decoded_result);
else
decoded += decoded_result;
LOG_FUNC_RETURN(decoded);
}
int encode_service_request(service_request_msg *service_request, uint8_t *buffer, uint32_t len)
{
int encoded = 0;
int encode_result = 0;
LOG_FUNC_IN;
/* Checking IEI and pointer */
CHECK_PDU_POINTER_AND_LENGTH_ENCODER(buffer, SERVICE_REQUEST_MINIMUM_LENGTH, len);
if ((encode_result =
encode_ksi_and_sequence_number(&service_request->ksiandsequencenumber,
0, buffer + encoded, len - encoded)) < 0) //Return in case of error
LOG_FUNC_RETURN(encode_result);
else
encoded += encode_result;
if ((encode_result =
encode_short_mac(&service_request->messageauthenticationcode, 0,
buffer + encoded, len - encoded)) < 0) //Return in case of error
LOG_FUNC_RETURN(encode_result);
else
encoded += encode_result;
LOG_FUNC_RETURN(encoded);
}