renamed openair-cn to openair3
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7886 818b1a75-f10b-46b9-bf7c-635c3b92a50f
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gauthier
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/*
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* Copyright (c) 2015, EURECOM (www.eurecom.fr)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and documentation are those
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* of the authors and should not be interpreted as representing official policies,
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* either expressed or implied, of the FreeBSD Project.
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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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