| 1 | /*
|
|---|
| 2 | * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
|
|---|
| 3 | *
|
|---|
| 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
|
|---|
| 8 | */
|
|---|
| 9 |
|
|---|
| 10 | #include "e_os.h"
|
|---|
| 11 |
|
|---|
| 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 "sslerr.h"
|
|---|
| 18 | #include "internal/thread_once.h"
|
|---|
| 19 |
|
|---|
| 20 | static int stopped;
|
|---|
| 21 |
|
|---|
| 22 | static void ssl_library_stop(void);
|
|---|
| 23 |
|
|---|
| 24 | static CRYPTO_ONCE ssl_base = CRYPTO_ONCE_STATIC_INIT;
|
|---|
| 25 | static int ssl_base_inited = 0;
|
|---|
| 26 | DEFINE_RUN_ONCE_STATIC(ossl_init_ssl_base)
|
|---|
| 27 | {
|
|---|
| 28 | #ifndef OPENSSL_NO_COMP
|
|---|
| 29 | OSSL_TRACE(INIT, "ossl_init_ssl_base: "
|
|---|
| 30 | "SSL_COMP_get_compression_methods()\n");
|
|---|
| 31 | /*
|
|---|
| 32 | * This will initialise the built-in compression algorithms. The value
|
|---|
| 33 | * returned is a STACK_OF(SSL_COMP), but that can be discarded safely
|
|---|
| 34 | */
|
|---|
| 35 | SSL_COMP_get_compression_methods();
|
|---|
| 36 | #endif
|
|---|
| 37 | ssl_sort_cipher_list();
|
|---|
| 38 | OSSL_TRACE(INIT,"ossl_init_ssl_base: SSL_add_ssl_module()\n");
|
|---|
| 39 | /*
|
|---|
| 40 | * We ignore an error return here. Not much we can do - but not that bad
|
|---|
| 41 | * either. We can still safely continue.
|
|---|
| 42 | */
|
|---|
| 43 | OPENSSL_atexit(ssl_library_stop);
|
|---|
| 44 | ssl_base_inited = 1;
|
|---|
| 45 | return 1;
|
|---|
| 46 | }
|
|---|
| 47 |
|
|---|
| 48 | static CRYPTO_ONCE ssl_strings = CRYPTO_ONCE_STATIC_INIT;
|
|---|
| 49 | static int ssl_strings_inited = 0;
|
|---|
| 50 | DEFINE_RUN_ONCE_STATIC(ossl_init_load_ssl_strings)
|
|---|
| 51 | {
|
|---|
| 52 | /*
|
|---|
| 53 | * OPENSSL_NO_AUTOERRINIT is provided here to prevent at compile time
|
|---|
| 54 | * pulling in all the error strings during static linking
|
|---|
| 55 | */
|
|---|
| 56 | #if !defined(OPENSSL_NO_ERR) && !defined(OPENSSL_NO_AUTOERRINIT)
|
|---|
| 57 | OSSL_TRACE(INIT, "ossl_init_load_ssl_strings: ossl_err_load_SSL_strings()\n");
|
|---|
| 58 | ossl_err_load_SSL_strings();
|
|---|
| 59 | ssl_strings_inited = 1;
|
|---|
| 60 | #endif
|
|---|
| 61 | return 1;
|
|---|
| 62 | }
|
|---|
| 63 |
|
|---|
| 64 | DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_load_ssl_strings,
|
|---|
| 65 | ossl_init_load_ssl_strings)
|
|---|
| 66 | {
|
|---|
| 67 | /* Do nothing in this case */
|
|---|
| 68 | return 1;
|
|---|
| 69 | }
|
|---|
| 70 |
|
|---|
| 71 | static void ssl_library_stop(void)
|
|---|
| 72 | {
|
|---|
| 73 | /* Might be explicitly called and also by atexit */
|
|---|
| 74 | if (stopped)
|
|---|
| 75 | return;
|
|---|
| 76 | stopped = 1;
|
|---|
| 77 |
|
|---|
| 78 | if (ssl_base_inited) {
|
|---|
| 79 | #ifndef OPENSSL_NO_COMP
|
|---|
| 80 | OSSL_TRACE(INIT, "ssl_library_stop: "
|
|---|
| 81 | "ssl_comp_free_compression_methods_int()\n");
|
|---|
| 82 | ssl_comp_free_compression_methods_int();
|
|---|
| 83 | #endif
|
|---|
| 84 | }
|
|---|
| 85 |
|
|---|
| 86 | if (ssl_strings_inited) {
|
|---|
| 87 | OSSL_TRACE(INIT, "ssl_library_stop: err_free_strings_int()\n");
|
|---|
| 88 | /*
|
|---|
| 89 | * If both crypto and ssl error strings are inited we will end up
|
|---|
| 90 | * calling err_free_strings_int() twice - but that's ok. The second
|
|---|
| 91 | * time will be a no-op. It's easier to do that than to try and track
|
|---|
| 92 | * between the two libraries whether they have both been inited.
|
|---|
| 93 | */
|
|---|
| 94 | err_free_strings_int();
|
|---|
| 95 | }
|
|---|
| 96 | }
|
|---|
| 97 |
|
|---|
| 98 | /*
|
|---|
| 99 | * If this function is called with a non NULL settings value then it must be
|
|---|
| 100 | * called prior to any threads making calls to any OpenSSL functions,
|
|---|
| 101 | * i.e. passing a non-null settings value is assumed to be single-threaded.
|
|---|
| 102 | */
|
|---|
| 103 | int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS * settings)
|
|---|
| 104 | {
|
|---|
| 105 | static int stoperrset = 0;
|
|---|
| 106 |
|
|---|
| 107 | if (stopped) {
|
|---|
| 108 | if (!stoperrset) {
|
|---|
| 109 | /*
|
|---|
| 110 | * We only ever set this once to avoid getting into an infinite
|
|---|
| 111 | * loop where the error system keeps trying to init and fails so
|
|---|
| 112 | * sets an error etc
|
|---|
| 113 | */
|
|---|
| 114 | stoperrset = 1;
|
|---|
| 115 | ERR_raise(ERR_LIB_SSL, ERR_R_INIT_FAIL);
|
|---|
| 116 | }
|
|---|
| 117 | return 0;
|
|---|
| 118 | }
|
|---|
| 119 |
|
|---|
| 120 | opts |= OPENSSL_INIT_ADD_ALL_CIPHERS
|
|---|
| 121 | | OPENSSL_INIT_ADD_ALL_DIGESTS;
|
|---|
| 122 | #ifndef OPENSSL_NO_AUTOLOAD_CONFIG
|
|---|
| 123 | if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) == 0)
|
|---|
| 124 | opts |= OPENSSL_INIT_LOAD_CONFIG;
|
|---|
| 125 | #endif
|
|---|
| 126 |
|
|---|
| 127 | if (!OPENSSL_init_crypto(opts, settings))
|
|---|
| 128 | return 0;
|
|---|
| 129 |
|
|---|
| 130 | if (!RUN_ONCE(&ssl_base, ossl_init_ssl_base))
|
|---|
| 131 | return 0;
|
|---|
| 132 |
|
|---|
| 133 | if ((opts & OPENSSL_INIT_NO_LOAD_SSL_STRINGS)
|
|---|
| 134 | && !RUN_ONCE_ALT(&ssl_strings, ossl_init_no_load_ssl_strings,
|
|---|
| 135 | ossl_init_load_ssl_strings))
|
|---|
| 136 | return 0;
|
|---|
| 137 |
|
|---|
| 138 | if ((opts & OPENSSL_INIT_LOAD_SSL_STRINGS)
|
|---|
| 139 | && !RUN_ONCE(&ssl_strings, ossl_init_load_ssl_strings))
|
|---|
| 140 | return 0;
|
|---|
| 141 |
|
|---|
| 142 | return 1;
|
|---|
| 143 | }
|
|---|
