eb7d2ed1fe
This change marks public symbols as dynamically exported. This means that it becomes viable to build a shared library of libcrypto and libssl with -fvisibility=hidden. On Windows, one not only needs to mark functions for export in a component, but also for import when using them from a different component. Because of this we have to build with |BORINGSSL_IMPLEMENTATION| defined when building the code. Other components, when including our headers, won't have that defined and then the |OPENSSL_EXPORT| tag becomes an import tag instead. See the #defines in base.h In the asm code, symbols are now hidden by default and those that need to be exported are wrapped by a C function. In order to support Chromium, a couple of libssl functions were moved to ssl.h from ssl_locl.h: ssl_get_new_session and ssl_update_cache. Change-Id: Ib4b76e2f1983ee066e7806c24721e8626d08a261 Reviewed-on: https://boringssl-review.googlesource.com/1350 Reviewed-by: Adam Langley <agl@google.com>
137 lines
6.0 KiB
C
137 lines
6.0 KiB
C
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.] */
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#ifndef OPENSSL_HEADER_MEM_H
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#define OPENSSL_HEADER_MEM_H
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#include <openssl/base.h>
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#include <stdarg.h>
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* OpenSSL has, historically, had a complex set of malloc debugging options.
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* However, that was written in a time before Valgrind and ASAN. Since we now
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* have those tools, the OpenSSL allocation functions are simply macros around
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* the standard memory functions. */
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#define OPENSSL_malloc malloc
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#define OPENSSL_realloc realloc
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#define OPENSSL_free free
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/* OPENSSL_realloc_clean acts like |realloc|, but clears the previous memory
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* buffer. Because this is implemented as a wrapper around |malloc|, it needs
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* to be given the size of the buffer pointed to by |ptr|. */
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void *OPENSSL_realloc_clean(void *ptr, size_t old_size, size_t new_size);
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/* OPENSSL_cleanse zeros out |len| bytes of memory at |ptr|. This is similar to
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* |memset_s| from C11. */
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OPENSSL_EXPORT void OPENSSL_cleanse(void *ptr, size_t len);
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/* CRYPTO_memcmp returns zero iff the |len| bytes at |a| and |b| are equal. It
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* takes an amount of time dependent on |len|, but independent of the contents
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* of |a| and |b|. Unlike memcmp, it cannot be used to put elements into a
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* defined order as the return value when a != b is undefined, other than to be
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* non-zero. */
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OPENSSL_EXPORT int CRYPTO_memcmp(const void *a, const void *b, size_t len);
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/* OPENSSL_hash32 implements the 32 bit, FNV-1a hash. */
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OPENSSL_EXPORT uint32_t OPENSSL_hash32(const void *ptr, size_t len);
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/* OPENSSL_strdup has the same behaviour as strdup(3). */
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OPENSSL_EXPORT char *OPENSSL_strdup(const char *s);
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/* OPENSSL_strnlen has the same behaviour as strnlen(3). */
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OPENSSL_EXPORT size_t OPENSSL_strnlen(const char *s, size_t len);
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/* OPENSSL_strcasecmp has the same behaviour as strcasecmp(3). */
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OPENSSL_EXPORT int OPENSSL_strcasecmp(const char *a, const char *b);
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/* OPENSSL_strncasecmp has the same behaviour as strncasecmp(3). */
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OPENSSL_EXPORT int OPENSSL_strncasecmp(const char *a, const char *b, size_t n);
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/* DECIMAL_SIZE returns an upper bound for the length of the decimal
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* representation of the given type. */
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#define DECIMAL_SIZE(type) ((sizeof(type)*8+2)/3+1)
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/* Printf functions.
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*
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* These functions are either OpenSSL wrappers for standard functions (i.e.
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* |BIO_snprintf| and |BIO_vsnprintf|) which don't exist in C89, or are
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* versions of printf functions that output to a BIO rather than a FILE. */
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#ifdef __GNUC__
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#define __bio_h__attr__ __attribute__
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#else
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#define __bio_h__attr__(x)
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#endif
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OPENSSL_EXPORT int BIO_snprintf(char *buf, size_t n, const char *format, ...)
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__bio_h__attr__((__format__(__printf__, 3, 4)));
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OPENSSL_EXPORT int BIO_vsnprintf(char *buf, size_t n, const char *format,
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va_list args)
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__bio_h__attr__((__format__(__printf__, 3, 0)));
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#undef __bio_h__attr__
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#if defined(__cplusplus)
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} /* extern C */
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#endif
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#endif /* OPENSSL_HEADER_MEM_H */
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