115 lines
3.5 KiB
C
115 lines
3.5 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 "EsmMessageContainer.h"
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#include "nas_log.h"
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#define NAS_DEBUG 1
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int decode_esm_message_container(EsmMessageContainer *esmmessagecontainer, uint8_t iei, uint8_t *buffer, uint32_t len)
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{
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int decoded = 0;
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int decode_result;
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uint16_t ielen;
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LOG_FUNC_IN;
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if (iei > 0) {
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CHECK_IEI_DECODER(iei, *buffer);
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decoded++;
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}
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DECODE_LENGTH_U16(buffer + decoded, ielen, decoded);
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CHECK_LENGTH_DECODER(len - decoded, ielen);
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if ((decode_result = decode_octet_string(&esmmessagecontainer->esmmessagecontainercontents, ielen, buffer + decoded, len - decoded)) < 0) {
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LOG_FUNC_RETURN(decode_result);
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} else {
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decoded += decode_result;
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}
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#if defined (NAS_DEBUG)
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dump_esm_message_container_xml(esmmessagecontainer, iei);
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#endif
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LOG_FUNC_RETURN(decoded);
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}
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int encode_esm_message_container(EsmMessageContainer *esmmessagecontainer, uint8_t iei, uint8_t *buffer, uint32_t len)
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{
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uint8_t *lenPtr;
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uint32_t encoded = 0;
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int32_t encode_result;
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/* Checking IEI and pointer */
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CHECK_PDU_POINTER_AND_LENGTH_ENCODER(buffer, ESM_MESSAGE_CONTAINER_MINIMUM_LENGTH, len);
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#if defined (NAS_DEBUG)
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dump_esm_message_container_xml(esmmessagecontainer, iei);
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#endif
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if (iei > 0) {
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*buffer = iei;
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encoded++;
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}
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lenPtr = (buffer + encoded);
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//encoded += 2;
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//if ((encode_result = encode_octet_string(&esmmessagecontainer->esmmessagecontainercontents, buffer + sizeof(uint16_t), len - sizeof(uint16_t))) < 0)
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if ((encode_result = encode_octet_string(&esmmessagecontainer->esmmessagecontainercontents, lenPtr + sizeof(uint16_t), len - sizeof(uint16_t))) < 0)
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return encode_result;
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else
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encoded += encode_result;
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ENCODE_U16(lenPtr, encode_result, encoded);
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#if 0
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lenPtr[1] = (((encoded - 2 - ((iei > 0) ? 1: 0))) & 0x0000ff00) >> 8;
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lenPtr[0] = ((encoded - 2 - ((iei > 0) ? 1: 0))) & 0x000000ff;
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#endif
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return encoded;
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}
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void dump_esm_message_container_xml(EsmMessageContainer *esmmessagecontainer, uint8_t iei)
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{
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printf("<Esm Message Container>\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("%s", dump_octet_string_xml(&esmmessagecontainer->esmmessagecontainercontents));
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printf("</Esm Message Container>\n");
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}
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