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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.] */
#ifndef OPENSSL_HEADER_BUFFER_H
#define OPENSSL_HEADER_BUFFER_H
#include <openssl/base.h>
#if defined(__cplusplus)
extern "C" {
#endif
/* Memory and string functions, see also mem.h. */
/* BUF_MEM is a generic buffer object used by OpenSSL. */
struct buf_mem_st {
size_t length; /* current number of bytes */
char *data;
size_t max; /* size of buffer */
};
/* BUF_MEM_new creates a new BUF_MEM which has no allocated data buffer. */
OPENSSL_EXPORT BUF_MEM *BUF_MEM_new(void);
/* BUF_MEM_free frees |buf->data| if needed and then frees |buf| itself. */
OPENSSL_EXPORT void BUF_MEM_free(BUF_MEM *buf);
/* BUF_MEM_grow ensures that |buf| has length |len| and allocates memory if
* needed. If the length of |buf| increased, the new bytes are filled with
* zeros. It returns the length of |buf|, or zero if there's an error. */
OPENSSL_EXPORT size_t BUF_MEM_grow(BUF_MEM *buf, size_t len);
/* BUF_MEM_grow_clean acts the same as |BUF_MEM_grow|, but clears the previous
* contents of memory if reallocing. */
OPENSSL_EXPORT size_t BUF_MEM_grow_clean(BUF_MEM *str, size_t len);
/* BUF_strdup returns an allocated, duplicate of |str|. */
OPENSSL_EXPORT char *BUF_strdup(const char *str);
/* BUF_strnlen returns the number of characters in |str|, excluding the NUL
* byte, but at most |max_len|. This function never reads more than |max_len|
* bytes from |str|. */
OPENSSL_EXPORT size_t BUF_strnlen(const char *str, size_t max_len);
/* BUF_strndup returns an allocated, duplicate of |str|, which is, at most,
* |size| bytes. The result is always NUL terminated. */
OPENSSL_EXPORT char *BUF_strndup(const char *str, size_t size);
/* BUF_memdup returns an allocated, duplicate of |size| bytes from |data|. */
OPENSSL_EXPORT void *BUF_memdup(const void *data, size_t size);
/* BUF_strlcpy acts like strlcpy(3). */
OPENSSL_EXPORT size_t BUF_strlcpy(char *dst, const char *src, size_t dst_size);
/* BUF_strlcat acts like strlcat(3). */
OPENSSL_EXPORT size_t BUF_strlcat(char *dst, const char *src, size_t size);
#if defined(__cplusplus)
} /* extern C */
#endif
#endif /* OPENSSL_HEADER_BUFFER_H */
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