navid
0c4ba24a8a
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7747 818b1a75-f10b-46b9-bf7c-635c3b92a50f
142 lines
6.0 KiB
C
142 lines
6.0 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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#ifndef TLV_DECODER_H_
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#define TLV_DECODER_H_
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#include <arpa/inet.h> // ntohl, ntohs
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#include "nas_log.h"
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#ifndef NAS_DEBUG
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# define NAS_DEBUG 1
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#endif
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#define DECODE_U8(bUFFER, vALUE, sIZE) \
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vALUE = *(uint8_t*)(bUFFER); \
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sIZE += sizeof(uint8_t)
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#define DECODE_U16(bUFFER, vALUE, sIZE) \
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vALUE = ntohs(*(uint16_t*)(bUFFER)); \
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sIZE += sizeof(uint16_t)
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#define DECODE_U24(bUFFER, vALUE, sIZE) \
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vALUE = ntohl(*(uint32_t*)(bUFFER)) >> 8; \
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sIZE += sizeof(uint8_t) + sizeof(uint16_t)
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#define DECODE_U32(bUFFER, vALUE, sIZE) \
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vALUE = ntohl(*(uint32_t*)(bUFFER)); \
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sIZE += sizeof(uint32_t)
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#if (BYTE_ORDER == LITTLE_ENDIAN)
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# define DECODE_LENGTH_U16(bUFFER, vALUE, sIZE) \
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vALUE = ((*(bUFFER)) << 8) | (*((bUFFER) + 1)); \
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sIZE += sizeof(uint16_t)
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#else
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# define DECODE_LENGTH_U16(bUFFER, vALUE, sIZE) \
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vALUE = (*(bUFFER)) | (*((bUFFER) + 1) << 8); \
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sIZE += sizeof(uint16_t)
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#endif
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#define IES_DECODE_U8(bUFFER, dECODED, vALUE) \
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DECODE_U8(bUFFER + dECODED, vALUE, dECODED)
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#define IES_DECODE_U16(bUFFER, dECODED, vALUE) \
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DECODE_U16(bUFFER + dECODED, vALUE, dECODED)
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#define IES_DECODE_U24(bUFFER, dECODED, vALUE) \
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DECODE_U24(bUFFER + dECODED, vALUE, dECODED)
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#define IES_DECODE_U32(bUFFER, dECODED, vALUE) \
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DECODE_U32(bUFFER + dECODED, vALUE, dECODED)
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typedef enum {
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TLV_DECODE_ERROR_OK = 0,
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TLV_DECODE_UNEXPECTED_IEI = -1,
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TLV_DECODE_MANDATORY_FIELD_NOT_PRESENT = -2,
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TLV_DECODE_VALUE_DOESNT_MATCH = -3,
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/* Fatal errors - received message should not be processed */
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TLV_DECODE_WRONG_MESSAGE_TYPE = -10,
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TLV_DECODE_PROTOCOL_NOT_SUPPORTED = -11,
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TLV_DECODE_BUFFER_TOO_SHORT = -12,
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TLV_DECODE_BUFFER_NULL = -13,
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TLV_DECODE_MAC_MISMATCH = -14,
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} tlv_decoder_error_code;
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/* Defines error code limit below which received message should be discarded
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* because it cannot be further processed */
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#define TLV_DECODE_FATAL_ERROR (TLV_DECODE_VALUE_DOESNT_MATCH)
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extern int errorCodeDecoder;
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void tlv_decode_perror(void);
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#define CHECK_PDU_POINTER_AND_LENGTH_DECODER(bUFFER, mINIMUMlENGTH, lENGTH) \
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if (bUFFER == NULL) \
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{ \
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printf("(%s:%d) Got NULL pointer for the payload\n", \
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__FILE__, __LINE__); \
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errorCodeDecoder = TLV_DECODE_BUFFER_NULL; \
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LOG_FUNC_RETURN(TLV_DECODE_BUFFER_NULL); \
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} \
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if (lENGTH < mINIMUMlENGTH) \
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{ \
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printf("(%s:%d) Expecting at least %d bytes, got %d\n", \
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__FILE__, __LINE__, mINIMUMlENGTH, lENGTH); \
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errorCodeDecoder = TLV_DECODE_BUFFER_TOO_SHORT; \
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LOG_FUNC_RETURN(TLV_DECODE_BUFFER_TOO_SHORT); \
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}
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#define CHECK_LENGTH_DECODER(bUFFERlENGTH, lENGTH) \
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if (bUFFERlENGTH < lENGTH) \
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{ \
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errorCodeDecoder = TLV_DECODE_BUFFER_TOO_SHORT; \
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LOG_FUNC_RETURN(TLV_DECODE_BUFFER_TOO_SHORT); \
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}
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#define CHECK_MESSAGE_TYPE(mESSAGE_tYPE, bUFFER) \
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{ \
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if (mESSAGE_tYPE != bUFFER) \
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{ \
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errorCodeDecoder = TLV_DECODE_WRONG_MESSAGE_TYPE; \
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LOG_FUNC_RETURN(errorCodeDecoder); \
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} \
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}
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#define CHECK_IEI_DECODER(iEI, bUFFER) \
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if(iEI != bUFFER) \
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{ \
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printf("IEI is different than the one expected." \
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"(Got: 0x%x, expecting: 0x%x)\n", bUFFER, iEI); \
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errorCodeDecoder = TLV_DECODE_UNEXPECTED_IEI; \
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LOG_FUNC_RETURN(TLV_DECODE_UNEXPECTED_IEI); \
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}
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#endif /* define (TLV_DECODER_H_) */
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