Mirror of BoringSSL (grpc依赖)
https://boringssl.googlesource.com/boringssl
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90 lines
2.6 KiB
90 lines
2.6 KiB
/* |
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* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. |
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* |
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* Licensed under the OpenSSL license (the "License"). You may not use |
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* this file except in compliance with the License. You can obtain a copy |
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* in the file LICENSE in the source distribution or at |
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* https://www.openssl.org/source/license.html |
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*/ |
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#ifndef OPENSSL_HEADER_BUFFER_H |
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#define OPENSSL_HEADER_BUFFER_H |
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#include <openssl/base.h> |
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#if defined(__cplusplus) |
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extern "C" { |
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#endif |
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// Memory and string functions, see also mem.h. |
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// buf_mem_st (aka |BUF_MEM|) is a generic buffer object used by OpenSSL. |
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struct buf_mem_st { |
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size_t length; // current number of bytes |
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char *data; |
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size_t max; // size of buffer |
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}; |
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// BUF_MEM_new creates a new BUF_MEM which has no allocated data buffer. |
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OPENSSL_EXPORT BUF_MEM *BUF_MEM_new(void); |
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// BUF_MEM_free frees |buf->data| if needed and then frees |buf| itself. |
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OPENSSL_EXPORT void BUF_MEM_free(BUF_MEM *buf); |
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// BUF_MEM_reserve ensures |buf| has capacity |cap| and allocates memory if |
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// needed. It returns one on success and zero on error. |
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OPENSSL_EXPORT int BUF_MEM_reserve(BUF_MEM *buf, size_t cap); |
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// BUF_MEM_grow ensures that |buf| has length |len| and allocates memory if |
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// needed. If the length of |buf| increased, the new bytes are filled with |
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// zeros. It returns the length of |buf|, or zero if there's an error. |
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OPENSSL_EXPORT size_t BUF_MEM_grow(BUF_MEM *buf, size_t len); |
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// BUF_MEM_grow_clean calls |BUF_MEM_grow|. BoringSSL always zeros memory |
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// allocated memory on free. |
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OPENSSL_EXPORT size_t BUF_MEM_grow_clean(BUF_MEM *buf, size_t len); |
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// BUF_MEM_append appends |in| to |buf|. It returns one on success and zero on |
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// error. |
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OPENSSL_EXPORT int BUF_MEM_append(BUF_MEM *buf, const void *in, size_t len); |
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// Deprecated functions. |
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// BUF_strdup calls |OPENSSL_strdup|. |
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OPENSSL_EXPORT char *BUF_strdup(const char *str); |
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// BUF_strnlen calls |OPENSSL_strnlen|. |
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OPENSSL_EXPORT size_t BUF_strnlen(const char *str, size_t max_len); |
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// BUF_strndup calls |OPENSSL_strndup|. |
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OPENSSL_EXPORT char *BUF_strndup(const char *str, size_t size); |
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// BUF_memdup calls |OPENSSL_memdup|. |
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OPENSSL_EXPORT void *BUF_memdup(const void *data, size_t size); |
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// BUF_strlcpy calls |OPENSSL_strlcpy|. |
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OPENSSL_EXPORT size_t BUF_strlcpy(char *dst, const char *src, size_t dst_size); |
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// BUF_strlcat calls |OPENSSL_strlcat|. |
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OPENSSL_EXPORT size_t BUF_strlcat(char *dst, const char *src, size_t dst_size); |
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#if defined(__cplusplus) |
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} // extern C |
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extern "C++" { |
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BSSL_NAMESPACE_BEGIN |
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BORINGSSL_MAKE_DELETER(BUF_MEM, BUF_MEM_free) |
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BSSL_NAMESPACE_END |
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} // extern C++ |
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#endif |
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#endif // OPENSSL_HEADER_BUFFER_H
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