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openssl/ssl/ssl_init.c

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Provide framework for auto initialise/deinitialise of the library This commit provides the basis and core code for an auto initialisation and deinitialisation framework for libcrypto and libssl. The intention is to remove the need (in many circumstances) to call explicit initialise and deinitialise functions. Explicit initialisation will still be an option, and if non-default initialisation is needed then it will be required. Similarly for de-initialisation (although this will be a lot easier since it will bring all de-initialisation into a single function). Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 19:26:14 +08:00
/*
* Written by Matt Caswell for the OpenSSL project.
*/
/* ====================================================================
* Copyright (c) 2016 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.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
Updates for auto init/deinit review comments Fixes for the auto-init/deinit code based on review comments Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 21:12:34 +08:00
#include "e_os.h"
Provide framework for auto initialise/deinitialise of the library This commit provides the basis and core code for an auto initialisation and deinitialisation framework for libcrypto and libssl. The intention is to remove the need (in many circumstances) to call explicit initialise and deinitialise functions. Explicit initialisation will still be an option, and if non-default initialisation is needed then it will be required. Similarly for de-initialisation (although this will be a lot easier since it will bring all de-initialisation into a single function). Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 19:26:14 +08:00
#include <openssl/crypto.h>
#include <openssl/evp.h>
Can't re-init after stop. Remoce DYANMIC once-init stuff. After the library is stopped, you can't restart it. Reviewed-by: Matt Caswell <matt@openssl.org>
2016-02-10 13:39:29 +08:00
#include <assert.h>
Provide framework for auto initialise/deinitialise of the library This commit provides the basis and core code for an auto initialisation and deinitialisation framework for libcrypto and libssl. The intention is to remove the need (in many circumstances) to call explicit initialise and deinitialise functions. Explicit initialisation will still be an option, and if non-default initialisation is needed then it will be required. Similarly for de-initialisation (although this will be a lot easier since it will bring all de-initialisation into a single function). Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 19:26:14 +08:00
#include "ssl_locl.h"
Can't re-init after stop. Remoce DYANMIC once-init stuff. After the library is stopped, you can't restart it. Reviewed-by: Matt Caswell <matt@openssl.org>
2016-02-10 13:39:29 +08:00
static int stopped;
Provide framework for auto initialise/deinitialise of the library This commit provides the basis and core code for an auto initialisation and deinitialisation framework for libcrypto and libssl. The intention is to remove the need (in many circumstances) to call explicit initialise and deinitialise functions. Explicit initialisation will still be an option, and if non-default initialisation is needed then it will be required. Similarly for de-initialisation (although this will be a lot easier since it will bring all de-initialisation into a single function). Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 19:26:14 +08:00
/* Implement "once" functionality */
#if !defined(OPENSSL_THREADS)
typedef int OPENSSL_INIT_ONCE;
# define OPENSSL_INIT_ONCE_STATIC_INIT 0
static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void))
{
if (*once == OPENSSL_INIT_ONCE_STATIC_INIT) {
*once = 1;
init();
}
}
#elif defined(OPENSSL_SYS_WINDOWS)
# include <windows.h>
# if _WIN32_WINNT < 0x0600
/*
* Versions before 0x0600 (Windows Vista, Windows Server 2008 or later) do not
* have InitOnceExecuteOnce, so we fall back to using a spinlock instead.
*/
typedef LONG OPENSSL_INIT_ONCE;
# define OPENSSL_INIT_ONCE_STATIC_INIT 0
# define ONCE_UNINITED 0
# define ONCE_ININIT 1
# define ONCE_DONE 2
static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void))
{
LONG volatile *lock = (LONG *)once;
LONG result;
if (*lock == ONCE_DONE)
return;
do {
result = InterlockedCompareExchange(lock, ONCE_ININIT, ONCE_UNINITED);
if (result == ONCE_UNINITED) {
init();
*lock = ONCE_DONE;
return;
}
} while (result == ONCE_ININIT);
}
# else
typedef INIT_ONCE OPENSSL_INIT_ONCE;
# define OPENSSL_INIT_ONCE_STATIC_INIT INIT_ONCE_STATIC_INIT
static BOOL CALLBACK once_cb(PINIT_ONCE once, PVOID initfp, PVOID *unused)
{
void (*init)(void) = initfp;
init();
return TRUE;
}
static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void))
{
InitOnceExecuteOnce((INIT_ONCE *)once, once_cb, init, NULL);
}
# endif
#else /* pthreads */
# include <pthread.h>
typedef pthread_once_t OPENSSL_INIT_ONCE;
# define OPENSSL_INIT_ONCE_STATIC_INIT PTHREAD_ONCE_INIT
static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void))
{
pthread_once(once, init);
}
#endif
static void ssl_library_stop(void);
static OPENSSL_INIT_ONCE ssl_base = OPENSSL_INIT_ONCE_STATIC_INIT;
static int ssl_base_inited = 0;
static void ossl_init_ssl_base(void)
{
#ifdef OPENSSL_INIT_DEBUG
fprintf(stderr, "OPENSSL_INIT: ossl_init_ssl_base: "
"Adding SSL ciphers and digests\n");
#endif
#ifndef OPENSSL_NO_DES
EVP_add_cipher(EVP_des_cbc());
EVP_add_cipher(EVP_des_ede3_cbc());
#endif
#ifndef OPENSSL_NO_IDEA
EVP_add_cipher(EVP_idea_cbc());
#endif
#ifndef OPENSSL_NO_RC4
EVP_add_cipher(EVP_rc4());
# ifndef OPENSSL_NO_MD5
EVP_add_cipher(EVP_rc4_hmac_md5());
# endif
#endif
#ifndef OPENSSL_NO_RC2
EVP_add_cipher(EVP_rc2_cbc());
/*
* Not actually used for SSL/TLS but this makes PKCS#12 work if an
* application only calls SSL_library_init().
*/
EVP_add_cipher(EVP_rc2_40_cbc());
#endif
#ifndef OPENSSL_NO_AES
EVP_add_cipher(EVP_aes_128_cbc());
EVP_add_cipher(EVP_aes_192_cbc());
EVP_add_cipher(EVP_aes_256_cbc());
EVP_add_cipher(EVP_aes_128_gcm());
EVP_add_cipher(EVP_aes_256_gcm());
EVP_add_cipher(EVP_aes_128_ccm());
EVP_add_cipher(EVP_aes_256_ccm());
EVP_add_cipher(EVP_aes_128_cbc_hmac_sha1());
EVP_add_cipher(EVP_aes_256_cbc_hmac_sha1());
EVP_add_cipher(EVP_aes_128_cbc_hmac_sha256());
EVP_add_cipher(EVP_aes_256_cbc_hmac_sha256());
#endif
#ifndef OPENSSL_NO_CAMELLIA
EVP_add_cipher(EVP_camellia_128_cbc());
EVP_add_cipher(EVP_camellia_256_cbc());
#endif
#if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
EVP_add_cipher(EVP_chacha20_poly1305());
#endif
#ifndef OPENSSL_NO_SEED
EVP_add_cipher(EVP_seed_cbc());
#endif
#ifndef OPENSSL_NO_MD5
EVP_add_digest(EVP_md5());
EVP_add_digest_alias(SN_md5, "ssl3-md5");
# ifndef OPENSSL_NO_SHA
EVP_add_digest(EVP_md5_sha1());
# endif
#endif
EVP_add_digest(EVP_sha1()); /* RSA with sha1 */
EVP_add_digest_alias(SN_sha1, "ssl3-sha1");
EVP_add_digest_alias(SN_sha1WithRSAEncryption, SN_sha1WithRSA);
EVP_add_digest(EVP_sha224());
EVP_add_digest(EVP_sha256());
EVP_add_digest(EVP_sha384());
EVP_add_digest(EVP_sha512());
#ifndef OPENSSL_NO_COMP
#ifdef OPENSSL_INIT_DEBUG
fprintf(stderr, "OPENSSL_INIT: ossl_init_ssl_base: "
"SSL_COMP_get_compression_methods()\n");
#endif
/*
* This will initialise the built-in compression algorithms. The value
* returned is a STACK_OF(SSL_COMP), but that can be discarded safely
*/
SSL_COMP_get_compression_methods();
#endif
/* initialize cipher/digest methods table */
ssl_load_ciphers();
#ifdef OPENSSL_INIT_DEBUG
fprintf(stderr, "OPENSSL_INIT: ossl_init_ssl_base: "
"SSL_add_ssl_module()\n");
#endif
SSL_add_ssl_module();
/*
* We ignore an error return here. Not much we can do - but not that bad
* either. We can still safely continue.
*/
Rename INIT funtions, deprecate old ones. Man, there were a lot of renamings :) Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-10 00:52:40 +08:00
OPENSSL_atexit(ssl_library_stop);
Provide framework for auto initialise/deinitialise of the library This commit provides the basis and core code for an auto initialisation and deinitialisation framework for libcrypto and libssl. The intention is to remove the need (in many circumstances) to call explicit initialise and deinitialise functions. Explicit initialisation will still be an option, and if non-default initialisation is needed then it will be required. Similarly for de-initialisation (although this will be a lot easier since it will bring all de-initialisation into a single function). Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 19:26:14 +08:00
ssl_base_inited = 1;
}
static OPENSSL_INIT_ONCE ssl_strings = OPENSSL_INIT_ONCE_STATIC_INIT;
static int ssl_strings_inited = 0;
static void ossl_init_load_ssl_strings(void)
{
Add an OPENSSL_NO_AUTOERRINIT option This option disables automatic loading of the crypto/ssl error strings in order to keep statically linked executable file size down Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 17:39:07 +08:00
/*
* OPENSSL_NO_AUTOERRINIT is provided here to prevent at compile time
* pulling in all the error strings during static linking
*/
#if !defined(OPENSSL_NO_ERR) && !defined(OPENSSL_NO_AUTOERRINIT)
# ifdef OPENSSL_INIT_DEBUG
Provide framework for auto initialise/deinitialise of the library This commit provides the basis and core code for an auto initialisation and deinitialisation framework for libcrypto and libssl. The intention is to remove the need (in many circumstances) to call explicit initialise and deinitialise functions. Explicit initialisation will still be an option, and if non-default initialisation is needed then it will be required. Similarly for de-initialisation (although this will be a lot easier since it will bring all de-initialisation into a single function). Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 19:26:14 +08:00
fprintf(stderr, "OPENSSL_INIT: ossl_init_load_ssl_strings: "
"ERR_load_SSL_strings()\n");
Add an OPENSSL_NO_AUTOERRINIT option This option disables automatic loading of the crypto/ssl error strings in order to keep statically linked executable file size down Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 17:39:07 +08:00
# endif
Provide framework for auto initialise/deinitialise of the library This commit provides the basis and core code for an auto initialisation and deinitialisation framework for libcrypto and libssl. The intention is to remove the need (in many circumstances) to call explicit initialise and deinitialise functions. Explicit initialisation will still be an option, and if non-default initialisation is needed then it will be required. Similarly for de-initialisation (although this will be a lot easier since it will bring all de-initialisation into a single function). Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 19:26:14 +08:00
ERR_load_SSL_strings();
Add an OPENSSL_NO_AUTOERRINIT option This option disables automatic loading of the crypto/ssl error strings in order to keep statically linked executable file size down Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 17:39:07 +08:00
#endif
Provide framework for auto initialise/deinitialise of the library This commit provides the basis and core code for an auto initialisation and deinitialisation framework for libcrypto and libssl. The intention is to remove the need (in many circumstances) to call explicit initialise and deinitialise functions. Explicit initialisation will still be an option, and if non-default initialisation is needed then it will be required. Similarly for de-initialisation (although this will be a lot easier since it will bring all de-initialisation into a single function). Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 19:26:14 +08:00
ssl_strings_inited = 1;
}
static void ossl_init_no_load_ssl_strings(void)
{
/* Do nothing in this case */
return;
}
static void ssl_library_stop(void)
{
Can't re-init after stop. Remoce DYANMIC once-init stuff. After the library is stopped, you can't restart it. Reviewed-by: Matt Caswell <matt@openssl.org>
2016-02-10 13:39:29 +08:00
/* Might be explicitly called and also by atexit */
if (stopped)
return;
stopped = 1;
Provide framework for auto initialise/deinitialise of the library This commit provides the basis and core code for an auto initialisation and deinitialisation framework for libcrypto and libssl. The intention is to remove the need (in many circumstances) to call explicit initialise and deinitialise functions. Explicit initialisation will still be an option, and if non-default initialisation is needed then it will be required. Similarly for de-initialisation (although this will be a lot easier since it will bring all de-initialisation into a single function). Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 19:26:14 +08:00
if (ssl_base_inited) {
#ifndef OPENSSL_NO_COMP
#ifdef OPENSSL_INIT_DEBUG
fprintf(stderr, "OPENSSL_INIT: ssl_library_stop: "
"SSL_COMP_free_compression_methods()\n");
#endif
SSL_COMP_free_compression_methods();
#endif
}
if (ssl_strings_inited) {
#ifdef OPENSSL_INIT_DEBUG
fprintf(stderr, "OPENSSL_INIT: ssl_library_stop: "
"ERR_free_strings()\n");
#endif
/*
* If both crypto and ssl error strings are inited we will end up
* calling ERR_free_strings() twice - but that's ok. The second time
* will be a no-op. It's easier to do that than to try and track
* between the two libraries whether they have both been inited.
*/
ERR_free_strings();
}
}
/*
* If this function is called with a non NULL settings value then it must be
* called prior to any threads making calls to any OpenSSL functions,
* i.e. passing a non-null settings value is assumed to be single-threaded.
*/
The new init functions can now fail so shouldn't be void The new init functions can fail if the library has already been stopped. We should be able to indicate failure with a 0 return value. Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-02-10 21:59:15 +08:00
int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings)
Provide framework for auto initialise/deinitialise of the library This commit provides the basis and core code for an auto initialisation and deinitialisation framework for libcrypto and libssl. The intention is to remove the need (in many circumstances) to call explicit initialise and deinitialise functions. Explicit initialisation will still be an option, and if non-default initialisation is needed then it will be required. Similarly for de-initialisation (although this will be a lot easier since it will bring all de-initialisation into a single function). Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 19:26:14 +08:00
{
The new init functions can now fail so shouldn't be void The new init functions can fail if the library has already been stopped. We should be able to indicate failure with a 0 return value. Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-02-10 21:59:15 +08:00
if (stopped)
return 0;
Can't re-init after stop. Remoce DYANMIC once-init stuff. After the library is stopped, you can't restart it. Reviewed-by: Matt Caswell <matt@openssl.org>
2016-02-10 13:39:29 +08:00
The new init functions can now fail so shouldn't be void The new init functions can fail if the library has already been stopped. We should be able to indicate failure with a 0 return value. Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-02-10 21:59:15 +08:00
if (!OPENSSL_init_crypto(opts | OPENSSL_INIT_ADD_ALL_CIPHERS
| OPENSSL_INIT_ADD_ALL_DIGESTS, settings))
return 0;
Provide framework for auto initialise/deinitialise of the library This commit provides the basis and core code for an auto initialisation and deinitialisation framework for libcrypto and libssl. The intention is to remove the need (in many circumstances) to call explicit initialise and deinitialise functions. Explicit initialisation will still be an option, and if non-default initialisation is needed then it will be required. Similarly for de-initialisation (although this will be a lot easier since it will bring all de-initialisation into a single function). Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 19:26:14 +08:00
ossl_init_once_run(&ssl_base, ossl_init_ssl_base);
if (opts & OPENSSL_INIT_NO_LOAD_SSL_STRINGS)
ossl_init_once_run(&ssl_strings, ossl_init_no_load_ssl_strings);
if (opts & OPENSSL_INIT_LOAD_SSL_STRINGS)
ossl_init_once_run(&ssl_strings, ossl_init_load_ssl_strings);
The new init functions can now fail so shouldn't be void The new init functions can fail if the library has already been stopped. We should be able to indicate failure with a 0 return value. Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-02-10 21:59:15 +08:00
return 1;
Provide framework for auto initialise/deinitialise of the library This commit provides the basis and core code for an auto initialisation and deinitialisation framework for libcrypto and libssl. The intention is to remove the need (in many circumstances) to call explicit initialise and deinitialise functions. Explicit initialisation will still be an option, and if non-default initialisation is needed then it will be required. Similarly for de-initialisation (although this will be a lot easier since it will bring all de-initialisation into a single function). Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-02-09 19:26:14 +08:00
}
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