2 * Written by Matt Caswell for the OpenSSL project.
4 /* ====================================================================
5 * Copyright (c) 2016 The OpenSSL Project. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
19 * 3. All advertising materials mentioning features or use of this
20 * software must display the following acknowledgment:
21 * "This product includes software developed by the OpenSSL Project
22 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
24 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
25 * endorse or promote products derived from this software without
26 * prior written permission. For written permission, please contact
27 * openssl-core@openssl.org.
29 * 5. Products derived from this software may not be called "OpenSSL"
30 * nor may "OpenSSL" appear in their names without prior written
31 * permission of the OpenSSL Project.
33 * 6. Redistributions of any form whatsoever must retain the following
35 * "This product includes software developed by the OpenSSL Project
36 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
38 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
39 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
45 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
48 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
49 * OF THE POSSIBILITY OF SUCH DAMAGE.
50 * ====================================================================
52 * This product includes cryptographic software written by Eric Young
53 * (eay@cryptsoft.com). This product includes software written by Tim
54 * Hudson (tjh@cryptsoft.com).
60 #include <openssl/crypto.h>
61 #include <openssl/evp.h>
67 /* Implement "once" functionality */
68 #if !defined(OPENSSL_THREADS)
69 typedef int OPENSSL_INIT_ONCE;
70 # define OPENSSL_INIT_ONCE_STATIC_INIT 0
72 static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void))
74 if (*once == OPENSSL_INIT_ONCE_STATIC_INIT) {
79 #elif defined(OPENSSL_SYS_WINDOWS)
82 # if _WIN32_WINNT < 0x0600
85 * Versions before 0x0600 (Windows Vista, Windows Server 2008 or later) do not
86 * have InitOnceExecuteOnce, so we fall back to using a spinlock instead.
88 typedef LONG OPENSSL_INIT_ONCE;
89 # define OPENSSL_INIT_ONCE_STATIC_INIT 0
91 # define ONCE_UNINITED 0
92 # define ONCE_ININIT 1
95 static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void))
97 LONG volatile *lock = (LONG *)once;
100 if (*lock == ONCE_DONE)
104 result = InterlockedCompareExchange(lock, ONCE_ININIT, ONCE_UNINITED);
105 if (result == ONCE_UNINITED) {
110 } while (result == ONCE_ININIT);
115 typedef INIT_ONCE OPENSSL_INIT_ONCE;
116 # define OPENSSL_INIT_ONCE_STATIC_INIT INIT_ONCE_STATIC_INIT
118 static BOOL CALLBACK once_cb(PINIT_ONCE once, PVOID initfp, PVOID *unused)
120 void (*init)(void) = initfp;
127 static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void))
129 InitOnceExecuteOnce((INIT_ONCE *)once, once_cb, init, NULL);
133 # include <pthread.h>
135 typedef pthread_once_t OPENSSL_INIT_ONCE;
136 # define OPENSSL_INIT_ONCE_STATIC_INIT PTHREAD_ONCE_INIT
138 static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void))
140 pthread_once(once, init);
144 static void ssl_library_stop(void);
146 static OPENSSL_INIT_ONCE ssl_base = OPENSSL_INIT_ONCE_STATIC_INIT;
147 static int ssl_base_inited = 0;
148 static void ossl_init_ssl_base(void)
150 #ifdef OPENSSL_INIT_DEBUG
151 fprintf(stderr, "OPENSSL_INIT: ossl_init_ssl_base: "
152 "Adding SSL ciphers and digests\n");
154 #ifndef OPENSSL_NO_DES
155 EVP_add_cipher(EVP_des_cbc());
156 EVP_add_cipher(EVP_des_ede3_cbc());
158 #ifndef OPENSSL_NO_IDEA
159 EVP_add_cipher(EVP_idea_cbc());
161 #ifndef OPENSSL_NO_RC4
162 EVP_add_cipher(EVP_rc4());
163 # ifndef OPENSSL_NO_MD5
164 EVP_add_cipher(EVP_rc4_hmac_md5());
167 #ifndef OPENSSL_NO_RC2
168 EVP_add_cipher(EVP_rc2_cbc());
170 * Not actually used for SSL/TLS but this makes PKCS#12 work if an
171 * application only calls SSL_library_init().
173 EVP_add_cipher(EVP_rc2_40_cbc());
175 #ifndef OPENSSL_NO_AES
176 EVP_add_cipher(EVP_aes_128_cbc());
177 EVP_add_cipher(EVP_aes_192_cbc());
178 EVP_add_cipher(EVP_aes_256_cbc());
179 EVP_add_cipher(EVP_aes_128_gcm());
180 EVP_add_cipher(EVP_aes_256_gcm());
181 EVP_add_cipher(EVP_aes_128_ccm());
182 EVP_add_cipher(EVP_aes_256_ccm());
183 EVP_add_cipher(EVP_aes_128_cbc_hmac_sha1());
184 EVP_add_cipher(EVP_aes_256_cbc_hmac_sha1());
185 EVP_add_cipher(EVP_aes_128_cbc_hmac_sha256());
186 EVP_add_cipher(EVP_aes_256_cbc_hmac_sha256());
188 #ifndef OPENSSL_NO_CAMELLIA
189 EVP_add_cipher(EVP_camellia_128_cbc());
190 EVP_add_cipher(EVP_camellia_256_cbc());
192 #if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
193 EVP_add_cipher(EVP_chacha20_poly1305());
196 #ifndef OPENSSL_NO_SEED
197 EVP_add_cipher(EVP_seed_cbc());
200 #ifndef OPENSSL_NO_MD5
201 EVP_add_digest(EVP_md5());
202 EVP_add_digest_alias(SN_md5, "ssl3-md5");
203 # ifndef OPENSSL_NO_SHA
204 EVP_add_digest(EVP_md5_sha1());
207 EVP_add_digest(EVP_sha1()); /* RSA with sha1 */
208 EVP_add_digest_alias(SN_sha1, "ssl3-sha1");
209 EVP_add_digest_alias(SN_sha1WithRSAEncryption, SN_sha1WithRSA);
210 EVP_add_digest(EVP_sha224());
211 EVP_add_digest(EVP_sha256());
212 EVP_add_digest(EVP_sha384());
213 EVP_add_digest(EVP_sha512());
214 #ifndef OPENSSL_NO_COMP
215 #ifdef OPENSSL_INIT_DEBUG
216 fprintf(stderr, "OPENSSL_INIT: ossl_init_ssl_base: "
217 "SSL_COMP_get_compression_methods()\n");
220 * This will initialise the built-in compression algorithms. The value
221 * returned is a STACK_OF(SSL_COMP), but that can be discarded safely
223 SSL_COMP_get_compression_methods();
225 /* initialize cipher/digest methods table */
228 #ifdef OPENSSL_INIT_DEBUG
229 fprintf(stderr, "OPENSSL_INIT: ossl_init_ssl_base: "
230 "SSL_add_ssl_module()\n");
232 SSL_add_ssl_module();
234 * We ignore an error return here. Not much we can do - but not that bad
235 * either. We can still safely continue.
237 OPENSSL_atexit(ssl_library_stop);
241 static OPENSSL_INIT_ONCE ssl_strings = OPENSSL_INIT_ONCE_STATIC_INIT;
242 static int ssl_strings_inited = 0;
243 static void ossl_init_load_ssl_strings(void)
246 * OPENSSL_NO_AUTOERRINIT is provided here to prevent at compile time
247 * pulling in all the error strings during static linking
249 #if !defined(OPENSSL_NO_ERR) && !defined(OPENSSL_NO_AUTOERRINIT)
250 # ifdef OPENSSL_INIT_DEBUG
251 fprintf(stderr, "OPENSSL_INIT: ossl_init_load_ssl_strings: "
252 "ERR_load_SSL_strings()\n");
254 ERR_load_SSL_strings();
256 ssl_strings_inited = 1;
259 static void ossl_init_no_load_ssl_strings(void)
261 /* Do nothing in this case */
265 static void ssl_library_stop(void)
267 /* Might be explicitly called and also by atexit */
272 if (ssl_base_inited) {
273 #ifndef OPENSSL_NO_COMP
274 #ifdef OPENSSL_INIT_DEBUG
275 fprintf(stderr, "OPENSSL_INIT: ssl_library_stop: "
276 "SSL_COMP_free_compression_methods()\n");
278 SSL_COMP_free_compression_methods();
282 if (ssl_strings_inited) {
283 #ifdef OPENSSL_INIT_DEBUG
284 fprintf(stderr, "OPENSSL_INIT: ssl_library_stop: "
285 "ERR_free_strings()\n");
288 * If both crypto and ssl error strings are inited we will end up
289 * calling ERR_free_strings() twice - but that's ok. The second time
290 * will be a no-op. It's easier to do that than to try and track
291 * between the two libraries whether they have both been inited.
299 * If this function is called with a non NULL settings value then it must be
300 * called prior to any threads making calls to any OpenSSL functions,
301 * i.e. passing a non-null settings value is assumed to be single-threaded.
303 int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings)
305 static int stoperrset = 0;
310 * We only ever set this once to avoid getting into an infinite
311 * loop where the error system keeps trying to init and fails so
315 SSLerr(SSL_F_OPENSSL_INIT_SSL, ERR_R_INIT_FAIL);
320 if (!OPENSSL_init_crypto(opts | OPENSSL_INIT_ADD_ALL_CIPHERS
321 | OPENSSL_INIT_ADD_ALL_DIGESTS, settings))
324 ossl_init_once_run(&ssl_base, ossl_init_ssl_base);
326 if (opts & OPENSSL_INIT_NO_LOAD_SSL_STRINGS)
327 ossl_init_once_run(&ssl_strings, ossl_init_no_load_ssl_strings);
329 if (opts & OPENSSL_INIT_LOAD_SSL_STRINGS)
330 ossl_init_once_run(&ssl_strings, ossl_init_load_ssl_strings);