107 lines
3.6 KiB
C
107 lines
3.6 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 <stdint.h>
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#include "TLVEncoder.h"
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#include "TLVDecoder.h"
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#include "CipheringKeySequenceNumber.h"
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int decode_ciphering_key_sequence_number(CipheringKeySequenceNumber *cipheringkeysequencenumber, uint8_t iei, uint8_t *buffer, uint32_t len)
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{
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int decoded = 0;
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CHECK_PDU_POINTER_AND_LENGTH_DECODER(buffer, CIPHERING_KEY_SEQUENCE_NUMBER_MINIMUM_LENGTH, len);
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if (iei > 0) {
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CHECK_IEI_DECODER((*buffer & 0xf0), iei);
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}
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*cipheringkeysequencenumber = *buffer & 0x7;
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decoded++;
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#if defined (NAS_DEBUG)
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dump_ciphering_key_sequence_number_xml(cipheringkeysequencenumber, iei);
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#endif
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return decoded;
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}
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int decode_u8_ciphering_key_sequence_number(CipheringKeySequenceNumber *cipheringkeysequencenumber, uint8_t iei, uint8_t value, uint32_t len)
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{
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int decoded = 0;
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uint8_t *buffer = &value;
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*cipheringkeysequencenumber = *buffer & 0x7;
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decoded++;
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#if defined (NAS_DEBUG)
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dump_ciphering_key_sequence_number_xml(cipheringkeysequencenumber, iei);
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#endif
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return decoded;
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}
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int encode_ciphering_key_sequence_number(CipheringKeySequenceNumber *cipheringkeysequencenumber, uint8_t iei, uint8_t *buffer, uint32_t len)
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{
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uint8_t encoded = 0;
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/* Checking length and pointer */
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CHECK_PDU_POINTER_AND_LENGTH_ENCODER(buffer, CIPHERING_KEY_SEQUENCE_NUMBER_MINIMUM_LENGTH, len);
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#if defined (NAS_DEBUG)
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dump_ciphering_key_sequence_number_xml(cipheringkeysequencenumber, iei);
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#endif
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*(buffer + encoded) = 0x00 | (iei & 0xf0) |
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(*cipheringkeysequencenumber & 0x7);
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encoded++;
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return encoded;
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}
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uint8_t encode_u8_ciphering_key_sequence_number(CipheringKeySequenceNumber *cipheringkeysequencenumber)
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{
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uint8_t bufferReturn;
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uint8_t *buffer = &bufferReturn;
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uint8_t encoded = 0;
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uint8_t iei = 0;
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dump_ciphering_key_sequence_number_xml(cipheringkeysequencenumber, 0);
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*(buffer + encoded) = 0x00 | (iei & 0xf0) |
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(*cipheringkeysequencenumber & 0x7);
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encoded++;
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return bufferReturn;
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}
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void dump_ciphering_key_sequence_number_xml(CipheringKeySequenceNumber *cipheringkeysequencenumber, uint8_t iei)
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{
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printf("<Ciphering Key Sequence Number>\n");
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if (iei > 0)
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/* Don't display IEI if = 0 */
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printf(" <IEI>0x%X</IEI>\n", iei);
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printf(" <Key sequence>%u</Key sequence>\n", *cipheringkeysequencenumber);
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printf("</Ciphering Key Sequence Number>\n");
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}
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