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/* o_init.c */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project.
*/
/* ====================================================================
* Copyright (c) 2011 The OpenSSL Project. All rights reserved.
*
* 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 above 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 acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 OpenSSL PROJECT OR
* ITS 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.
* ====================================================================
*
*/
#include <e_os.h>
#include <openssl/err.h>
#ifdef OPENSSL_FIPS
#include <openssl/fips.h>
#include <openssl/rand.h>
#endif
#if defined(__GNUC__) && __GNUC__>=2
void OPENSSL_init(void) __attribute__((constructor));
/* Most commonly this results in pointer to OPENSSL_init to be dropped
* to .ctors segment, which is traversed by GCC crtbegin.o upon
* program startup. Except on a.out OpenBSD where it results in
* _GLOBAL_$I$init() {init();} being auto-generated by
* compiler... But one way or another this is believed to cover
* *all* GCC targets. */
#elif defined(_MSC_VER)
# ifdef _WINDLL
__declspec(dllexport) /* this is essentially cosmetics... */
# endif
void OPENSSL_init(void);
static int init_wrapper(void) { OPENSSL_init(); return 0; }
# ifdef _WIN64
# pragma section(".CRT$XCU",read)
__declspec(allocate(".CRT$XCU"))
# else
# pragma data_seg(".CRT$XCU")
# endif
static int (*p)(void) = init_wrapper;
/* This results in pointer to init to appear in .CRT segment,
* which is traversed by Visual C run-time initialization code.
* This applies to both Win32 and [all flavors of] Win64. */
# pragma data_seg()
#elif defined(__SUNPRO_C)
void OPENSSL_init(void);
# pragma init(OPENSSL_init)
/* This results in a call to init to appear in .init segment. */
#elif defined(__DECC) && (defined(__VMS) || defined(VMS))
void OPENSSL_init(void);
# pragma __nostandard
globaldef { "LIB$INITIALIZ" } readonly _align (LONGWORD)
int spare[8] = {0};
globaldef { "LIB$INITIALIZE" } readonly _align (LONGWORD)
void (*x_OPENSSL_init)(void) = OPENSSL_init;
/* Refer to LIB$INITIALIZE to ensure it exists in the image. */
int lib$initialize();
globaldef int (*lib_init_ref)() = lib$initialize;
# pragma __standard
#elif 0
The rest has to be taken care of through command line:
-Wl,-init,OPENSSL_init on OSF1 and IRIX
-Wl,+init,OPENSSL_init on HP-UX
-Wl,-binitfini:OPENSSL_init on AIX
On ELF platforms this results in a call to OPENSSL_init to appear in
.init segment...
#endif
/* Perform any essential OpenSSL initialization operations.
* Currently only sets FIPS callbacks
*/
void OPENSSL_init(void)
{
static int done = 0;
if (done)
return;
done = 1;
#ifdef OPENSSL_FIPS
FIPS_set_locking_callbacks(CRYPTO_lock, CRYPTO_add_lock);
FIPS_set_error_callbacks(ERR_put_error, ERR_add_error_vdata);
FIPS_set_malloc_callbacks(CRYPTO_malloc, CRYPTO_free);
RAND_init_fips();
#endif
#if 0
fprintf(stderr, "Called OPENSSL_init\n");
#endif
}
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