diff options
Diffstat (limited to 'ssl/ssl_init.c')
| -rw-r--r-- | ssl/ssl_init.c | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/ssl/ssl_init.c b/ssl/ssl_init.c new file mode 100644 index 0000000000..f1014135a1 --- /dev/null +++ b/ssl/ssl_init.c @@ -0,0 +1,320 @@ +/* + * 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). + * + */ + +#include <openssl/e_os2.h> + +#if defined(OPENSSL_SYS_WINDOWS) && !defined(_WIN32_WINNT) +/* + * We default to requiring Windows Vista, Windows Server 2008 or later. We can + * support lower versions if _WIN32_WINNT is explicity defined to something + * less + */ +# define _WIN32_WINNT 0x0600 +#endif + +#include <openssl/crypto.h> +#include <openssl/evp.h> +#include "ssl_locl.h" + +/* Implement "once" functionality */ +#if !defined(OPENSSL_THREADS) +typedef int OPENSSL_INIT_ONCE; +# define OPENSSL_INIT_ONCE_STATIC_INIT 0 +# define OPENSSL_INIT_ONCE_DYNAMIC_INIT(once) (*(once) = 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 OPENSSL_INIT_ONCE_DYNAMIC_INIT(once) (*(once) = 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 +# define OPENSSL_INIT_ONCE_DYNAMIC_INIT(once) \ + InitOnceInitialize((PINIT_ONCE)(once)) + +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 +# define OPENSSL_INIT_ONCE_DYNAMIC_INIT(once) (*(once) = 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. + */ + OPENSSL_INIT_register_stop_handler(ssl_library_stop); + 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) +{ +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_load_ssl_strings: " + "ERR_load_SSL_strings()\n"); +#endif + ERR_load_SSL_strings(); + 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) +{ + 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(); + ssl_base_inited = 0; + OPENSSL_INIT_ONCE_DYNAMIC_INIT(&ssl_base); +#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(); + ssl_strings_inited = 0; + OPENSSL_INIT_ONCE_DYNAMIC_INIT(&ssl_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. + */ +void OPENSSL_INIT_ssl_library_start(uint64_t opts, + const OPENSSL_INIT_SETTINGS *settings) +{ + OPENSSL_INIT_crypto_library_start(opts | OPENSSL_INIT_ADD_ALL_CIPHERS + | OPENSSL_INIT_ADD_ALL_DIGESTS, settings); + + 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); +} + |