/* 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_grpc/base.h> #if defined(__cplusplus) extern "C" { #endif // Memory and string functions, see also mem.h. // buf_mem_st (aka |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_reserve ensures |buf| has capacity |cap| and allocates memory if // needed. It returns one on success and zero on error. OPENSSL_EXPORT int BUF_MEM_reserve(BUF_MEM *buf, size_t cap); // 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 calls |BUF_MEM_grow|. BoringSSL always zeros memory // allocated memory on free. OPENSSL_EXPORT size_t BUF_MEM_grow_clean(BUF_MEM *buf, size_t len); // BUF_MEM_append appends |in| to |buf|. It returns one on success and zero on // error. OPENSSL_EXPORT int BUF_MEM_append(BUF_MEM *buf, const void *in, size_t len); // Deprecated functions. // BUF_strdup calls |OPENSSL_strdup|. OPENSSL_EXPORT char *BUF_strdup(const char *str); // BUF_strnlen calls |OPENSSL_strnlen|. OPENSSL_EXPORT size_t BUF_strnlen(const char *str, size_t max_len); // BUF_strndup calls |OPENSSL_strndup|. OPENSSL_EXPORT char *BUF_strndup(const char *str, size_t size); // BUF_memdup calls |OPENSSL_memdup|. OPENSSL_EXPORT void *BUF_memdup(const void *data, size_t size); // BUF_strlcpy calls |OPENSSL_strlcpy|. OPENSSL_EXPORT size_t BUF_strlcpy(char *dst, const char *src, size_t dst_size); // BUF_strlcat calls |OPENSSL_strlcat|. OPENSSL_EXPORT size_t BUF_strlcat(char *dst, const char *src, size_t dst_size); #if defined(__cplusplus) } // extern C extern "C++" { BSSL_NAMESPACE_BEGIN BORINGSSL_MAKE_DELETER(BUF_MEM, BUF_MEM_free) BSSL_NAMESPACE_END } // extern C++ #endif #endif // OPENSSL_HEADER_BUFFER_H