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cborparser_dup_string.c
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/****************************************************************************
**
** Copyright (C) 2016 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 _BSD_SOURCE
#define _BSD_SOURCE 1
#endif
#ifndef _DEFAULT_SOURCE
#define _DEFAULT_SOURCE 1
#endif
#ifndef __STDC_LIMIT_MACROS
# define __STDC_LIMIT_MACROS 1
#endif
#define __STDC_WANT_IEC_60559_TYPES_EXT__
#include "cbor.h"
#include "compilersupport_p.h"
#include "memory.h"
/**
* \fn CborError cbor_value_dup_text_string(const CborValue *value, char **buffer, size_t *buflen, CborValue *next)
*
* Allocates memory for the string pointed by \a value and copies it into this
* buffer. The pointer to the buffer is stored in \a buffer and the number of
* bytes copied is stored in \a buflen (those variables must not be NULL).
*
* If the iterator \a value does not point to a text string, the behaviour is
* undefined, so checking with \ref cbor_value_get_type or \ref
* cbor_value_is_text_string is recommended.
*
* If \c malloc returns a NULL pointer, this function will return error
* condition \ref CborErrorOutOfMemory.
*
* On success, \c *buffer will contain a valid pointer that must be freed by
* calling \c free(). This is the case even for zero-length strings.
*
* The \a next pointer, if not null, will be updated to point to the next item
* after this string. If \a value points to the last item, then \a next will be
* invalid.
*
* This function may not run in constant time (it will run in O(n) time on the
* number of chunks). It requires constant memory (O(1)) in addition to the
* malloc'ed block.
*
* \note This function does not perform UTF-8 validation on the incoming text
* string.
*
* \sa cbor_value_get_text_string_chunk(), cbor_value_copy_text_string(), cbor_value_dup_byte_string()
*/
/**
* \fn CborError cbor_value_dup_byte_string(const CborValue *value, uint8_t **buffer, size_t *buflen, CborValue *next)
*
* Allocates memory for the string pointed by \a value and copies it into this
* buffer. The pointer to the buffer is stored in \a buffer and the number of
* bytes copied is stored in \a buflen (those variables must not be NULL).
*
* If the iterator \a value does not point to a byte string, the behaviour is
* undefined, so checking with \ref cbor_value_get_type or \ref
* cbor_value_is_byte_string is recommended.
*
* If \c malloc returns a NULL pointer, this function will return error
* condition \ref CborErrorOutOfMemory.
*
* On success, \c *buffer will contain a valid pointer that must be freed by
* calling \c free(). This is the case even for zero-length strings.
*
* The \a next pointer, if not null, will be updated to point to the next item
* after this string. If \a value points to the last item, then \a next will be
* invalid.
*
* This function may not run in constant time (it will run in O(n) time on the
* number of chunks). It requires constant memory (O(1)) in addition to the
* malloc'ed block.
*
* \sa cbor_value_get_text_string_chunk(), cbor_value_copy_byte_string(), cbor_value_dup_text_string()
*/
CborError _cbor_value_dup_string(const CborValue *value, void **buffer, size_t *buflen, CborValue *next)
{
CborError err;
cbor_assert(buffer);
cbor_assert(buflen);
*buflen = SIZE_MAX;
err = _cbor_value_copy_string(value, NULL, buflen, NULL);
if (err)
return err;
++*buflen;
*buffer = cbor_malloc(*buflen);
if (!*buffer) {
/* out of memory */
return CborErrorOutOfMemory;
}
err = _cbor_value_copy_string(value, *buffer, buflen, next);
if (err) {
cbor_free(*buffer);
return err;
}
return CborNoError;
}