/****************************************************************************
|
**
|
** Copyright (C) 2015 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.
|
**
|
****************************************************************************/
|
|
#define _BSD_SOURCE 1
|
#define _DEFAULT_SOURCE 1
|
#include "cbor.h"
|
#include "cborconstants_p.h"
|
#include "compilersupport_p.h"
|
#include <stdlib.h>
|
|
static inline uint16_t get16(const uint8_t *ptr)
|
{
|
uint16_t result;
|
memcpy(&result, ptr, sizeof(result));
|
return cbor_ntohs(result);
|
}
|
|
static inline uint32_t get32(const uint8_t *ptr)
|
{
|
uint32_t result;
|
memcpy(&result, ptr, sizeof(result));
|
return cbor_ntohl(result);
|
}
|
|
static inline uint64_t get64(const uint8_t *ptr)
|
{
|
uint64_t result;
|
memcpy(&result, ptr, sizeof(result));
|
return cbor_ntohll(result);
|
}
|
|
static inline CborError extract_number(const CborParser *p, int *offset, uint64_t *len)
|
{
|
uint8_t additional_information = p->d->get8(p->d, *offset) & SmallValueMask;
|
++*offset;
|
*len = 1;
|
if (additional_information < Value8Bit) {
|
*len = additional_information;
|
return CborNoError;
|
}
|
if (unlikely(additional_information > Value64Bit))
|
return CborErrorIllegalNumber;
|
|
size_t bytesNeeded = (size_t)(1 << (additional_information - Value8Bit));
|
if (unlikely(bytesNeeded > (size_t)(p->end - *offset))) {
|
return CborErrorUnexpectedEOF;
|
} else if (bytesNeeded == 1) {
|
*len = p->d->get8(p->d, *offset);
|
} else if (bytesNeeded == 2) {
|
*len = p->d->get16(p->d, *offset);
|
} else if (bytesNeeded == 4) {
|
*len = p->d->get32(p->d, *offset);
|
} else {
|
*len = p->d->get64(p->d, *offset);
|
}
|
*offset += bytesNeeded;
|
return CborNoError;
|
}
|
