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proxmark3/client/tinycbor/cbor.h
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2019-04-07 15:20:27 +02:00

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/****************************************************************************
**
** Copyright (C) 2017 Intel Corporation
**
** Permission is hereby granted, free of charge, to any person obtaining a copy
** of this software and associated documentation files (the "Software"), to deal
** in the Software without restriction, including without limitation the rights
** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
** copies of the Software, and to permit persons to whom the Software is
** furnished to do so, subject to the following conditions:
**
** The above copyright notice and this permission notice shall be included in
** all copies or substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
** OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
** THE SOFTWARE.
**
****************************************************************************/
#ifndef CBOR_H
#define CBOR_H
#ifndef assert
#include <assert.h>
#endif
#include <limits.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include "tinycbor-version.h"
#define TINYCBOR_VERSION ((TINYCBOR_VERSION_MAJOR << 16) | (TINYCBOR_VERSION_MINOR << 8) | TINYCBOR_VERSION_PATCH)
#ifdef __cplusplus
extern "C" {
#else
#include <stdbool.h>
#endif
#ifndef SIZE_MAX
/* Some systems fail to define SIZE_MAX in <stdint.h>, even though C99 requires it...
* Conversion from signed to unsigned is defined in 6.3.1.3 (Signed and unsigned integers) p2,
* which says: "the value is converted by repeatedly adding or subtracting one more than the
* maximum value that can be represented in the new type until the value is in the range of the
* new type."
* So -1 gets converted to size_t by adding SIZE_MAX + 1, which results in SIZE_MAX.
*/
# define SIZE_MAX ((size_t)-1)
#endif
#ifndef CBOR_API
# define CBOR_API
#endif
#ifndef CBOR_PRIVATE_API
# define CBOR_PRIVATE_API
#endif
#ifndef CBOR_INLINE_API
# if defined(__cplusplus)
# define CBOR_INLINE inline
# define CBOR_INLINE_API inline
# else
# define CBOR_INLINE_API static CBOR_INLINE
# if defined(_MSC_VER)
# define CBOR_INLINE __inline
# elif defined(__GNUC__)
# define CBOR_INLINE __inline__
# elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
# define CBOR_INLINE inline
# else
# define CBOR_INLINE
# endif
# endif
#endif
typedef enum CborType {
CborIntegerType = 0x00,
CborByteStringType = 0x40,
CborTextStringType = 0x60,
CborArrayType = 0x80,
CborMapType = 0xa0,
CborTagType = 0xc0,
CborSimpleType = 0xe0,
CborBooleanType = 0xf5,
CborNullType = 0xf6,
CborUndefinedType = 0xf7,
CborHalfFloatType = 0xf9,
CborFloatType = 0xfa,
CborDoubleType = 0xfb,
CborInvalidType = 0xff /* equivalent to the break byte, so it will never be used */
} CborType;
typedef uint64_t CborTag;
typedef enum CborKnownTags {
CborDateTimeStringTag = 0,
CborUnixTime_tTag = 1,
CborPositiveBignumTag = 2,
CborNegativeBignumTag = 3,
CborDecimalTag = 4,
CborBigfloatTag = 5,
CborCOSE_Encrypt0Tag = 16,
CborCOSE_Mac0Tag = 17,
CborCOSE_Sign1Tag = 18,
CborExpectedBase64urlTag = 21,
CborExpectedBase64Tag = 22,
CborExpectedBase16Tag = 23,
CborEncodedCborTag = 24,
CborUrlTag = 32,
CborBase64urlTag = 33,
CborBase64Tag = 34,
CborRegularExpressionTag = 35,
CborMimeMessageTag = 36,
CborCOSE_EncryptTag = 96,
CborCOSE_MacTag = 97,
CborCOSE_SignTag = 98,
CborSignatureTag = 55799
} CborKnownTags;
/* #define the constants so we can check with #ifdef */
#define CborDateTimeStringTag CborDateTimeStringTag
#define CborUnixTime_tTag CborUnixTime_tTag
#define CborPositiveBignumTag CborPositiveBignumTag
#define CborNegativeBignumTag CborNegativeBignumTag
#define CborDecimalTag CborDecimalTag
#define CborBigfloatTag CborBigfloatTag
#define CborCOSE_Encrypt0Tag CborCOSE_Encrypt0Tag
#define CborCOSE_Mac0Tag CborCOSE_Mac0Tag
#define CborCOSE_Sign1Tag CborCOSE_Sign1Tag
#define CborExpectedBase64urlTag CborExpectedBase64urlTag
#define CborExpectedBase64Tag CborExpectedBase64Tag
#define CborExpectedBase16Tag CborExpectedBase16Tag
#define CborEncodedCborTag CborEncodedCborTag
#define CborUrlTag CborUrlTag
#define CborBase64urlTag CborBase64urlTag
#define CborBase64Tag CborBase64Tag
#define CborRegularExpressionTag CborRegularExpressionTag
#define CborMimeMessageTag CborMimeMessageTag
#define CborCOSE_EncryptTag CborCOSE_EncryptTag
#define CborCOSE_MacTag CborCOSE_MacTag
#define CborCOSE_SignTag CborCOSE_SignTag
#define CborSignatureTag CborSignatureTag
/* Error API */
typedef enum CborError {
CborNoError = 0,
/* errors in all modes */
CborUnknownError,
CborErrorUnknownLength, /* request for length in array, map, or string with indeterminate length */
CborErrorAdvancePastEOF,
CborErrorIO,
/* parser errors streaming errors */
CborErrorGarbageAtEnd = 256,
CborErrorUnexpectedEOF,
CborErrorUnexpectedBreak,
CborErrorUnknownType, /* can only happen in major type 7 */
CborErrorIllegalType, /* type not allowed here */
CborErrorIllegalNumber,
CborErrorIllegalSimpleType, /* types of value less than 32 encoded in two bytes */
/* parser errors in strict mode parsing only */
CborErrorUnknownSimpleType = 512,
CborErrorUnknownTag,
CborErrorInappropriateTagForType,
CborErrorDuplicateObjectKeys,
CborErrorInvalidUtf8TextString,
CborErrorExcludedType,
CborErrorExcludedValue,
CborErrorImproperValue,
CborErrorOverlongEncoding,
CborErrorMapKeyNotString,
CborErrorMapNotSorted,
CborErrorMapKeysNotUnique,
/* encoder errors */
CborErrorTooManyItems = 768,
CborErrorTooFewItems,
/* internal implementation errors */
CborErrorDataTooLarge = 1024,
CborErrorNestingTooDeep,
CborErrorUnsupportedType,
/* errors in converting to JSON */
CborErrorJsonObjectKeyIsAggregate = 1280,
CborErrorJsonObjectKeyNotString,
CborErrorJsonNotImplemented,
CborErrorOutOfMemory = (int)(~0U / 2 + 1),
CborErrorInternalError = (int)(~0U / 2) /* INT_MAX on two's complement machines */
} CborError;
CBOR_API const char *cbor_error_string(CborError error);
/* Encoder API */
struct CborEncoder {
union {
uint8_t *ptr;
ptrdiff_t bytes_needed;
} data;
const uint8_t *end;
size_t remaining;
int flags;
};
typedef struct CborEncoder CborEncoder;
static const size_t CborIndefiniteLength = SIZE_MAX;
CBOR_API void cbor_encoder_init(CborEncoder *encoder, uint8_t *buffer, size_t size, int flags);
CBOR_API CborError cbor_encode_uint(CborEncoder *encoder, uint64_t value);
CBOR_API CborError cbor_encode_int(CborEncoder *encoder, int64_t value);
CBOR_API CborError cbor_encode_negative_int(CborEncoder *encoder, uint64_t absolute_value);
CBOR_API CborError cbor_encode_simple_value(CborEncoder *encoder, uint8_t value);
CBOR_API CborError cbor_encode_tag(CborEncoder *encoder, CborTag tag);
CBOR_API CborError cbor_encode_text_string(CborEncoder *encoder, const char *string, size_t length);
CBOR_INLINE_API CborError cbor_encode_text_stringz(CborEncoder *encoder, const char *string)
{ return cbor_encode_text_string(encoder, string, strlen(string)); }
CBOR_API CborError cbor_encode_byte_string(CborEncoder *encoder, const uint8_t *string, size_t length);
CBOR_API CborError cbor_encode_floating_point(CborEncoder *encoder, CborType fpType, const void *value);
CBOR_INLINE_API CborError cbor_encode_boolean(CborEncoder *encoder, bool value)
{ return cbor_encode_simple_value(encoder, (int)value - 1 + (CborBooleanType & 0x1f)); }
CBOR_INLINE_API CborError cbor_encode_null(CborEncoder *encoder)
{ return cbor_encode_simple_value(encoder, CborNullType & 0x1f); }
CBOR_INLINE_API CborError cbor_encode_undefined(CborEncoder *encoder)
{ return cbor_encode_simple_value(encoder, CborUndefinedType & 0x1f); }
CBOR_INLINE_API CborError cbor_encode_half_float(CborEncoder *encoder, const void *value)
{ return cbor_encode_floating_point(encoder, CborHalfFloatType, value); }
CBOR_INLINE_API CborError cbor_encode_float(CborEncoder *encoder, float value)
{ return cbor_encode_floating_point(encoder, CborFloatType, &value); }
CBOR_INLINE_API CborError cbor_encode_double(CborEncoder *encoder, double value)
{ return cbor_encode_floating_point(encoder, CborDoubleType, &value); }
CBOR_API CborError cbor_encoder_create_array(CborEncoder *encoder, CborEncoder *arrayEncoder, size_t length);
CBOR_API CborError cbor_encoder_create_map(CborEncoder *encoder, CborEncoder *mapEncoder, size_t length);
CBOR_API CborError cbor_encoder_close_container(CborEncoder *encoder, const CborEncoder *containerEncoder);
CBOR_API CborError cbor_encoder_close_container_checked(CborEncoder *encoder, const CborEncoder *containerEncoder);
CBOR_INLINE_API uint8_t *_cbor_encoder_get_buffer_pointer(const CborEncoder *encoder) {
return encoder->data.ptr;
}
CBOR_INLINE_API size_t cbor_encoder_get_buffer_size(const CborEncoder *encoder, const uint8_t *buffer) {
return (size_t)(encoder->data.ptr - buffer);
}
CBOR_INLINE_API size_t cbor_encoder_get_extra_bytes_needed(const CborEncoder *encoder) {
return encoder->end ? 0 : (size_t)encoder->data.bytes_needed;
}
/* Parser API */
enum CborParserIteratorFlags {
CborIteratorFlag_IntegerValueTooLarge = 0x01,
CborIteratorFlag_NegativeInteger = 0x02,
CborIteratorFlag_IteratingStringChunks = 0x02,
CborIteratorFlag_UnknownLength = 0x04,
CborIteratorFlag_ContainerIsMap = 0x20
};
struct CborParser {
const uint8_t *end;
uint32_t flags;
};
typedef struct CborParser CborParser;
struct CborValue {
const CborParser *parser;
const uint8_t *ptr;
uint32_t remaining;
uint16_t extra;
uint8_t type;
uint8_t flags;
};
typedef struct CborValue CborValue;
CBOR_API CborError cbor_parser_init(const uint8_t *buffer, size_t size, uint32_t flags, CborParser *parser, CborValue *it);
CBOR_API CborError cbor_value_validate_basic(const CborValue *it);
CBOR_INLINE_API bool cbor_value_at_end(const CborValue *it)
{ return it->remaining == 0; }
CBOR_INLINE_API const uint8_t *cbor_value_get_next_byte(const CborValue *it)
{ return it->ptr; }
CBOR_API CborError cbor_value_advance_fixed(CborValue *it);
CBOR_API CborError cbor_value_advance(CborValue *it);
CBOR_INLINE_API bool cbor_value_is_container(const CborValue *it)
{ return it->type == CborArrayType || it->type == CborMapType; }
CBOR_API CborError cbor_value_enter_container(const CborValue *it, CborValue *recursed);
CBOR_API CborError cbor_value_leave_container(CborValue *it, const CborValue *recursed);
CBOR_PRIVATE_API uint64_t _cbor_value_decode_int64_internal(const CborValue *value);
CBOR_INLINE_API uint64_t _cbor_value_extract_int64_helper(const CborValue *value) {
return (value->flags & CborIteratorFlag_IntegerValueTooLarge) ?
_cbor_value_decode_int64_internal(value) : value->extra;
}
CBOR_INLINE_API bool cbor_value_is_valid(const CborValue *value)
{ return value && value->type != CborInvalidType; }
CBOR_INLINE_API CborType cbor_value_get_type(const CborValue *value)
{ return (CborType)value->type; }
/* Null & undefined type */
CBOR_INLINE_API bool cbor_value_is_null(const CborValue *value)
{ return value->type == CborNullType; }
CBOR_INLINE_API bool cbor_value_is_undefined(const CborValue *value)
{ return value->type == CborUndefinedType; }
/* Booleans */
CBOR_INLINE_API bool cbor_value_is_boolean(const CborValue *value)
{ return value->type == CborBooleanType; }
CBOR_INLINE_API CborError cbor_value_get_boolean(const CborValue *value, bool *result) {
assert(cbor_value_is_boolean(value));
*result = !!value->extra;
return CborNoError;
}
/* Simple types */
CBOR_INLINE_API bool cbor_value_is_simple_type(const CborValue *value)
{ return value->type == CborSimpleType; }
CBOR_INLINE_API CborError cbor_value_get_simple_type(const CborValue *value, uint8_t *result) {
assert(cbor_value_is_simple_type(value));
*result = (uint8_t)value->extra;
return CborNoError;
}
/* Integers */
CBOR_INLINE_API bool cbor_value_is_integer(const CborValue *value)
{ return value->type == CborIntegerType; }
CBOR_INLINE_API bool cbor_value_is_unsigned_integer(const CborValue *value)
{ return cbor_value_is_integer(value) && (value->flags & CborIteratorFlag_NegativeInteger) == 0; }
CBOR_INLINE_API bool cbor_value_is_negative_integer(const CborValue *value)
{ return cbor_value_is_integer(value) && (value->flags & CborIteratorFlag_NegativeInteger); }
CBOR_INLINE_API CborError cbor_value_get_raw_integer(const CborValue *value, uint64_t *result) {
assert(cbor_value_is_integer(value));
*result = _cbor_value_extract_int64_helper(value);
return CborNoError;
}
CBOR_INLINE_API CborError cbor_value_get_uint64(const CborValue *value, uint64_t *result) {
assert(cbor_value_is_unsigned_integer(value));
*result = _cbor_value_extract_int64_helper(value);
return CborNoError;
}
CBOR_INLINE_API CborError cbor_value_get_int64(const CborValue *value, int64_t *result) {
assert(cbor_value_is_integer(value));
*result = (int64_t) _cbor_value_extract_int64_helper(value);
if (value->flags & CborIteratorFlag_NegativeInteger)
*result = -*result - 1;
return CborNoError;
}
CBOR_INLINE_API CborError cbor_value_get_int(const CborValue *value, int *result) {
assert(cbor_value_is_integer(value));
*result = (int) _cbor_value_extract_int64_helper(value);
if (value->flags & CborIteratorFlag_NegativeInteger)
*result = -*result - 1;
return CborNoError;
}
CBOR_API CborError cbor_value_get_int64_checked(const CborValue *value, int64_t *result);
CBOR_API CborError cbor_value_get_int_checked(const CborValue *value, int *result);
CBOR_INLINE_API bool cbor_value_is_length_known(const CborValue *value)
{ return (value->flags & CborIteratorFlag_UnknownLength) == 0; }
/* Tags */
CBOR_INLINE_API bool cbor_value_is_tag(const CborValue *value)
{ return value->type == CborTagType; }
CBOR_INLINE_API CborError cbor_value_get_tag(const CborValue *value, CborTag *result) {
assert(cbor_value_is_tag(value));
*result = _cbor_value_extract_int64_helper(value);
return CborNoError;
}
CBOR_API CborError cbor_value_skip_tag(CborValue *it);
/* Strings */
CBOR_INLINE_API bool cbor_value_is_byte_string(const CborValue *value)
{ return value->type == CborByteStringType; }
CBOR_INLINE_API bool cbor_value_is_text_string(const CborValue *value)
{ return value->type == CborTextStringType; }
CBOR_INLINE_API CborError cbor_value_get_string_length(const CborValue *value, size_t *length) {
uint64_t v;
assert(cbor_value_is_byte_string(value) || cbor_value_is_text_string(value));
if (!cbor_value_is_length_known(value))
return CborErrorUnknownLength;
v = _cbor_value_extract_int64_helper(value);
*length = (size_t)v;
if (*length != v)
return CborErrorDataTooLarge;
return CborNoError;
}
CBOR_PRIVATE_API CborError _cbor_value_copy_string(const CborValue *value, void *buffer,
size_t *buflen, CborValue *next);
CBOR_PRIVATE_API CborError _cbor_value_dup_string(const CborValue *value, void **buffer,
size_t *buflen, CborValue *next);
CBOR_API CborError cbor_value_calculate_string_length(const CborValue *value, size_t *len);
CBOR_INLINE_API CborError cbor_value_copy_text_string(const CborValue *value, char *buffer,
size_t *buflen, CborValue *next) {
assert(cbor_value_is_text_string(value));
return _cbor_value_copy_string(value, buffer, buflen, next);
}
CBOR_INLINE_API CborError cbor_value_copy_byte_string(const CborValue *value, uint8_t *buffer,
size_t *buflen, CborValue *next) {
assert(cbor_value_is_byte_string(value));
return _cbor_value_copy_string(value, buffer, buflen, next);
}
CBOR_INLINE_API CborError cbor_value_dup_text_string(const CborValue *value, char **buffer,
size_t *buflen, CborValue *next) {
assert(cbor_value_is_text_string(value));
return _cbor_value_dup_string(value, (void **)buffer, buflen, next);
}
CBOR_INLINE_API CborError cbor_value_dup_byte_string(const CborValue *value, uint8_t **buffer,
size_t *buflen, CborValue *next) {
assert(cbor_value_is_byte_string(value));
return _cbor_value_dup_string(value, (void **)buffer, buflen, next);
}
CBOR_API CborError cbor_value_text_string_equals(const CborValue *value, const char *string, bool *result);
/* Maps and arrays */
CBOR_INLINE_API bool cbor_value_is_array(const CborValue *value)
{ return value->type == CborArrayType; }
CBOR_INLINE_API bool cbor_value_is_map(const CborValue *value)
{ return value->type == CborMapType; }
CBOR_INLINE_API CborError cbor_value_get_array_length(const CborValue *value, size_t *length) {
uint64_t v;
assert(cbor_value_is_array(value));
if (!cbor_value_is_length_known(value))
return CborErrorUnknownLength;
v = _cbor_value_extract_int64_helper(value);
*length = (size_t)v;
if (*length != v)
return CborErrorDataTooLarge;
return CborNoError;
}
CBOR_INLINE_API CborError cbor_value_get_map_length(const CborValue *value, size_t *length) {
uint64_t v;
assert(cbor_value_is_map(value));
if (!cbor_value_is_length_known(value))
return CborErrorUnknownLength;
v = _cbor_value_extract_int64_helper(value);
*length = (size_t)v;
if (*length != v)
return CborErrorDataTooLarge;
return CborNoError;
}
CBOR_API CborError cbor_value_map_find_value(const CborValue *map, const char *string, CborValue *element);
/* Floating point */
CBOR_INLINE_API bool cbor_value_is_half_float(const CborValue *value)
{ return value->type == CborHalfFloatType; }
CBOR_API CborError cbor_value_get_half_float(const CborValue *value, void *result);
CBOR_INLINE_API bool cbor_value_is_float(const CborValue *value)
{ return value->type == CborFloatType; }
CBOR_INLINE_API CborError cbor_value_get_float(const CborValue *value, float *result) {
uint32_t data;
assert(cbor_value_is_float(value));
assert(value->flags & CborIteratorFlag_IntegerValueTooLarge);
data = (uint32_t)_cbor_value_decode_int64_internal(value);
memcpy(result, &data, sizeof(*result));
return CborNoError;
}
CBOR_INLINE_API bool cbor_value_is_double(const CborValue *value)
{ return value->type == CborDoubleType; }
CBOR_INLINE_API CborError cbor_value_get_double(const CborValue *value, double *result) {
uint64_t data;
assert(cbor_value_is_double(value));
assert(value->flags & CborIteratorFlag_IntegerValueTooLarge);
data = _cbor_value_decode_int64_internal(value);
memcpy(result, &data, sizeof(*result));
return CborNoError;
}
/* Validation API */
enum CborValidationFlags {
/* Bit mapping:
* bits 0-7 (8 bits): canonical format
* bits 8-11 (4 bits): canonical format & strict mode
* bits 12-20 (8 bits): strict mode
* bits 21-31 (10 bits): other
*/
CborValidateShortestIntegrals = 0x0001,
CborValidateShortestFloatingPoint = 0x0002,
CborValidateShortestNumbers = CborValidateShortestIntegrals | CborValidateShortestFloatingPoint,
CborValidateNoIndeterminateLength = 0x0100,
CborValidateMapIsSorted = 0x0200 | CborValidateNoIndeterminateLength,
CborValidateCanonicalFormat = 0x0fff,
CborValidateMapKeysAreUnique = 0x1000 | CborValidateMapIsSorted,
CborValidateTagUse = 0x2000,
CborValidateUtf8 = 0x4000,
CborValidateStrictMode = 0xfff00,
CborValidateMapKeysAreString = 0x100000,
CborValidateNoUndefined = 0x200000,
CborValidateNoTags = 0x400000,
CborValidateFiniteFloatingPoint = 0x800000,
/* unused = 0x1000000, */
/* unused = 0x2000000, */
CborValidateNoUnknownSimpleTypesSA = 0x4000000,
CborValidateNoUnknownSimpleTypes = 0x8000000 | CborValidateNoUnknownSimpleTypesSA,
CborValidateNoUnknownTagsSA = 0x10000000,
CborValidateNoUnknownTagsSR = 0x20000000 | CborValidateNoUnknownTagsSA,
CborValidateNoUnknownTags = 0x40000000 | CborValidateNoUnknownTagsSR,
CborValidateCompleteData = (int)0x80000000,
CborValidateStrictest = (int)~0U,
CborValidateBasic = 0
};
CBOR_API CborError cbor_value_validate(const CborValue *it, uint32_t flags);
/* Human-readable (dump) API */
enum CborPrettyFlags {
CborPrettyNumericEncodingIndicators = 0x01,
CborPrettyTextualEncodingIndicators = 0,
CborPrettyIndicateIndeterminateLength = 0x02,
CborPrettyIndicateIndetermineLength = CborPrettyIndicateIndeterminateLength, /* deprecated */
CborPrettyIndicateOverlongNumbers = 0x04,
CborPrettyShowStringFragments = 0x100,
CborPrettyMergeStringFragments = 0,
CborPrettyDefaultFlags = CborPrettyIndicateIndeterminateLength
};
typedef CborError(*CborStreamFunction)(void *token, const char *fmt, ...)
#ifdef __GNUC__
__attribute__((__format__(printf, 2, 3)))
#endif
;
CBOR_API CborError cbor_value_to_pretty_stream(CborStreamFunction streamFunction, void *token, CborValue *value, int flags);
/* The following API requires a hosted C implementation (uses FILE*) */
#if !defined(__STDC_HOSTED__) || __STDC_HOSTED__-0 == 1
CBOR_API CborError cbor_value_to_pretty_advance_flags(FILE *out, CborValue *value, int flags);
CBOR_API CborError cbor_value_to_pretty_advance(FILE *out, CborValue *value);
CBOR_INLINE_API CborError cbor_value_to_pretty(FILE *out, const CborValue *value) {
CborValue copy = *value;
return cbor_value_to_pretty_advance_flags(out, &copy, CborPrettyDefaultFlags);
}
#endif /* __STDC_HOSTED__ check */
#ifdef __cplusplus
}
#endif
#endif /* CBOR_H */
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