2 * Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
12 #include "internal/err.h"
13 #include <openssl/crypto.h>
14 #include <openssl/evp.h>
15 #include <openssl/trace.h>
16 #include "ssl_local.h"
17 #include "internal/thread_once.h"
21 static void ssl_library_stop(void);
23 static CRYPTO_ONCE ssl_base = CRYPTO_ONCE_STATIC_INIT;
24 static int ssl_base_inited = 0;
25 DEFINE_RUN_ONCE_STATIC(ossl_init_ssl_base)
27 #ifndef OPENSSL_NO_COMP
28 OSSL_TRACE(INIT, "ossl_init_ssl_base: "
29 "SSL_COMP_get_compression_methods()\n");
31 * This will initialise the built-in compression algorithms. The value
32 * returned is a STACK_OF(SSL_COMP), but that can be discarded safely
34 SSL_COMP_get_compression_methods();
36 ssl_sort_cipher_list();
37 OSSL_TRACE(INIT,"ossl_init_ssl_base: SSL_add_ssl_module()\n");
39 * We ignore an error return here. Not much we can do - but not that bad
40 * either. We can still safely continue.
42 OPENSSL_atexit(ssl_library_stop);
47 static CRYPTO_ONCE ssl_strings = CRYPTO_ONCE_STATIC_INIT;
48 static int ssl_strings_inited = 0;
49 DEFINE_RUN_ONCE_STATIC(ossl_init_load_ssl_strings)
52 * OPENSSL_NO_AUTOERRINIT is provided here to prevent at compile time
53 * pulling in all the error strings during static linking
55 #if !defined(OPENSSL_NO_ERR) && !defined(OPENSSL_NO_AUTOERRINIT)
56 OSSL_TRACE(INIT, "ossl_init_load_ssl_strings: ERR_load_SSL_strings()\n");
57 ERR_load_SSL_strings();
58 ssl_strings_inited = 1;
63 DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_load_ssl_strings,
64 ossl_init_load_ssl_strings)
66 /* Do nothing in this case */
70 static void ssl_library_stop(void)
72 /* Might be explicitly called and also by atexit */
77 if (ssl_base_inited) {
78 #ifndef OPENSSL_NO_COMP
79 OSSL_TRACE(INIT, "ssl_library_stop: "
80 "ssl_comp_free_compression_methods_int()\n");
81 ssl_comp_free_compression_methods_int();
85 if (ssl_strings_inited) {
86 OSSL_TRACE(INIT, "ssl_library_stop: err_free_strings_int()\n");
88 * If both crypto and ssl error strings are inited we will end up
89 * calling err_free_strings_int() twice - but that's ok. The second
90 * time will be a no-op. It's easier to do that than to try and track
91 * between the two libraries whether they have both been inited.
93 err_free_strings_int();
98 * If this function is called with a non NULL settings value then it must be
99 * called prior to any threads making calls to any OpenSSL functions,
100 * i.e. passing a non-null settings value is assumed to be single-threaded.
102 int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS * settings)
104 static int stoperrset = 0;
109 * We only ever set this once to avoid getting into an infinite
110 * loop where the error system keeps trying to init and fails so
114 SSLerr(SSL_F_OPENSSL_INIT_SSL, ERR_R_INIT_FAIL);
119 opts |= OPENSSL_INIT_ADD_ALL_CIPHERS
120 | OPENSSL_INIT_ADD_ALL_DIGESTS;
121 #ifndef OPENSSL_NO_AUTOLOAD_CONFIG
122 if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) == 0)
123 opts |= OPENSSL_INIT_LOAD_CONFIG;
126 if (!OPENSSL_init_crypto(opts, settings))
129 if (!RUN_ONCE(&ssl_base, ossl_init_ssl_base))
132 if ((opts & OPENSSL_INIT_NO_LOAD_SSL_STRINGS)
133 && !RUN_ONCE_ALT(&ssl_strings, ossl_init_no_load_ssl_strings,
134 ossl_init_load_ssl_strings))
137 if ((opts & OPENSSL_INIT_LOAD_SSL_STRINGS)
138 && !RUN_ONCE(&ssl_strings, ossl_init_load_ssl_strings))