92 lines
3.4 KiB
C
92 lines
3.4 KiB
C
/*******************************************************************************
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OpenAirInterface
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Copyright(c) 1999 - 2014 Eurecom
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OpenAirInterface is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenAirInterface is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenAirInterface.The full GNU General Public License is
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included in this distribution in the file called "COPYING". If not,
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see <http://www.gnu.org/licenses/>.
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Contact Information
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OpenAirInterface Admin: openair_admin@eurecom.fr
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OpenAirInterface Tech : openair_tech@eurecom.fr
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OpenAirInterface Dev : openair4g-devel@eurecom.fr
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Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
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*******************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include "TLVEncoder.h"
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#include "TLVDecoder.h"
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#include "ExtendedServiceRequest.h"
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int decode_extended_service_request(extended_service_request_msg *extended_service_request, uint8_t *buffer, uint32_t len)
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{
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uint32_t decoded = 0;
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int decoded_result = 0;
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// Check if we got a NULL pointer and if buffer length is >= minimum length expected for the message.
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CHECK_PDU_POINTER_AND_LENGTH_DECODER(buffer, EXTENDED_SERVICE_REQUEST_MINIMUM_LENGTH, len);
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/* Decoding mandatory fields */
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if ((decoded_result = decode_u8_service_type(&extended_service_request->servicetype, 0, *(buffer + decoded) >> 4, len - decoded)) < 0)
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return decoded_result;
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if ((decoded_result = decode_u8_nas_key_set_identifier(&extended_service_request->naskeysetidentifier, 0, *(buffer + decoded) & 0x0f, len - decoded)) < 0)
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return decoded_result;
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decoded++;
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if ((decoded_result = decode_mobile_identity(&extended_service_request->mtmsi, 0, buffer + decoded, len - decoded)) < 0)
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return decoded_result;
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else
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decoded += decoded_result;
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return decoded;
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}
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int encode_extended_service_request(extended_service_request_msg *extended_service_request, uint8_t *buffer, uint32_t len)
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{
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int encoded = 0;
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int encode_result = 0;
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/* Checking IEI and pointer */
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CHECK_PDU_POINTER_AND_LENGTH_ENCODER(buffer, EXTENDED_SERVICE_REQUEST_MINIMUM_LENGTH, len);
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*(buffer + encoded) = ((encode_u8_service_type(&extended_service_request->servicetype) & 0x0f) << 4) | (encode_u8_nas_key_set_identifier(&extended_service_request->naskeysetidentifier) & 0x0f);
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encoded++;
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if ((encode_result =
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encode_mobile_identity(&extended_service_request->mtmsi, 0, buffer +
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encoded, len - encoded)) < 0) //Return in case of error
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return encode_result;
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else
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encoded += encode_result;
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if ((encode_result =
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encode_csfb_response(&extended_service_request->csfbresponse, 0,
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buffer + encoded, len - encoded)) < 0) //Return in case of error
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return encode_result;
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else
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encoded += encode_result;
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return encoded;
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}
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