diff options
Diffstat (limited to 'roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/init.c')
| -rw-r--r-- | roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/init.c | 851 |
1 files changed, 851 insertions, 0 deletions
diff --git a/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/init.c b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/init.c new file mode 100644 index 000000000..1b0d523be --- /dev/null +++ b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/init.c @@ -0,0 +1,851 @@ +/* + * Copyright 2016-2019 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#include "e_os.h" +#include "crypto/cryptlib.h" +#include <openssl/err.h> +#include "crypto/rand.h" +#include "internal/bio.h" +#include <openssl/evp.h> +#include "crypto/evp.h" +#include "internal/conf.h" +#include "crypto/async.h" +#include "crypto/engine.h" +#include "internal/comp.h" +#include "internal/err.h" +#include "crypto/err.h" +#include "crypto/objects.h" +#include <stdlib.h> +#include <assert.h> +#include "internal/thread_once.h" +#include "crypto/dso_conf.h" +#include "internal/dso.h" +#include "crypto/store.h" + +static int stopped = 0; + +/* + * Since per-thread-specific-data destructors are not universally + * available, i.e. not on Windows, only below CRYPTO_THREAD_LOCAL key + * is assumed to have destructor associated. And then an effort is made + * to call this single destructor on non-pthread platform[s]. + * + * Initial value is "impossible". It is used as guard value to shortcut + * destructor for threads terminating before libcrypto is initialized or + * after it's de-initialized. Access to the key doesn't have to be + * serialized for the said threads, because they didn't use libcrypto + * and it doesn't matter if they pick "impossible" or dereference real + * key value and pull NULL past initialization in the first thread that + * intends to use libcrypto. + */ +static union { + long sane; + CRYPTO_THREAD_LOCAL value; +} destructor_key = { -1 }; + +static void ossl_init_thread_stop(struct thread_local_inits_st *locals); + +static void ossl_init_thread_destructor(void *local) +{ + ossl_init_thread_stop((struct thread_local_inits_st *)local); +} + +static struct thread_local_inits_st *ossl_init_get_thread_local(int alloc) +{ + struct thread_local_inits_st *local = + CRYPTO_THREAD_get_local(&destructor_key.value); + + if (alloc) { + if (local == NULL + && (local = OPENSSL_zalloc(sizeof(*local))) != NULL + && !CRYPTO_THREAD_set_local(&destructor_key.value, local)) { + OPENSSL_free(local); + return NULL; + } + } else { + CRYPTO_THREAD_set_local(&destructor_key.value, NULL); + } + + return local; +} + +typedef struct ossl_init_stop_st OPENSSL_INIT_STOP; +struct ossl_init_stop_st { + void (*handler)(void); + OPENSSL_INIT_STOP *next; +}; + +static OPENSSL_INIT_STOP *stop_handlers = NULL; +static CRYPTO_RWLOCK *init_lock = NULL; + +static CRYPTO_ONCE base = CRYPTO_ONCE_STATIC_INIT; +static int base_inited = 0; +DEFINE_RUN_ONCE_STATIC(ossl_init_base) +{ + CRYPTO_THREAD_LOCAL key; + +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_base: Setting up stop handlers\n"); +#endif +#ifndef OPENSSL_NO_CRYPTO_MDEBUG + ossl_malloc_setup_failures(); +#endif + if (!CRYPTO_THREAD_init_local(&key, ossl_init_thread_destructor)) + return 0; + if ((init_lock = CRYPTO_THREAD_lock_new()) == NULL) + goto err; + OPENSSL_cpuid_setup(); + + destructor_key.value = key; + base_inited = 1; + return 1; + +err: +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_base not ok!\n"); +#endif + CRYPTO_THREAD_lock_free(init_lock); + init_lock = NULL; + + CRYPTO_THREAD_cleanup_local(&key); + return 0; +} + +static CRYPTO_ONCE register_atexit = CRYPTO_ONCE_STATIC_INIT; +#if !defined(OPENSSL_SYS_UEFI) && defined(_WIN32) +static int win32atexit(void) +{ + OPENSSL_cleanup(); + return 0; +} +#endif + +DEFINE_RUN_ONCE_STATIC(ossl_init_register_atexit) +{ +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_register_atexit()\n"); +#endif +#ifndef OPENSSL_SYS_UEFI +# ifdef _WIN32 + /* We use _onexit() in preference because it gets called on DLL unload */ + if (_onexit(win32atexit) == NULL) + return 0; +# else + if (atexit(OPENSSL_cleanup) != 0) + return 0; +# endif +#endif + + return 1; +} + +DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_register_atexit, + ossl_init_register_atexit) +{ +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_no_register_atexit ok!\n"); +#endif + /* Do nothing in this case */ + return 1; +} + +static CRYPTO_ONCE load_crypto_nodelete = CRYPTO_ONCE_STATIC_INIT; +DEFINE_RUN_ONCE_STATIC(ossl_init_load_crypto_nodelete) +{ +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_load_crypto_nodelete()\n"); +#endif +#if !defined(OPENSSL_USE_NODELETE) \ + && !defined(OPENSSL_NO_PINSHARED) +# if defined(DSO_WIN32) && !defined(_WIN32_WCE) + { + HMODULE handle = NULL; + BOOL ret; + + /* We don't use the DSO route for WIN32 because there is a better way */ + ret = GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS + | GET_MODULE_HANDLE_EX_FLAG_PIN, + (void *)&base_inited, &handle); + +# ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: obtained DSO reference? %s\n", + (ret == TRUE ? "No!" : "Yes.")); +# endif + return (ret == TRUE) ? 1 : 0; + } +# elif !defined(DSO_NONE) + /* + * Deliberately leak a reference to ourselves. This will force the library + * to remain loaded until the atexit() handler is run at process exit. + */ + { + DSO *dso; + void *err; + + if (!err_shelve_state(&err)) + return 0; + + dso = DSO_dsobyaddr(&base_inited, DSO_FLAG_NO_UNLOAD_ON_FREE); +# ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: obtained DSO reference? %s\n", + (dso == NULL ? "No!" : "Yes.")); + /* + * In case of No!, it is uncertain our exit()-handlers can still be + * called. After dlclose() the whole library might have been unloaded + * already. + */ +# endif + DSO_free(dso); + err_unshelve_state(err); + } +# endif +#endif + + return 1; +} + +static CRYPTO_ONCE load_crypto_strings = CRYPTO_ONCE_STATIC_INIT; +static int load_crypto_strings_inited = 0; +DEFINE_RUN_ONCE_STATIC(ossl_init_load_crypto_strings) +{ + int ret = 1; + /* + * 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 + fprintf(stderr, "OPENSSL_INIT: ossl_init_load_crypto_strings: " + "err_load_crypto_strings_int()\n"); +# endif + ret = err_load_crypto_strings_int(); + load_crypto_strings_inited = 1; +#endif + return ret; +} + +DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_load_crypto_strings, + ossl_init_load_crypto_strings) +{ + /* Do nothing in this case */ + return 1; +} + +static CRYPTO_ONCE add_all_ciphers = CRYPTO_ONCE_STATIC_INIT; +DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_ciphers) +{ + /* + * OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time + * pulling in all the ciphers during static linking + */ +#ifndef OPENSSL_NO_AUTOALGINIT +# ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_add_all_ciphers: " + "openssl_add_all_ciphers_int()\n"); +# endif + openssl_add_all_ciphers_int(); +#endif + return 1; +} + +DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_add_all_ciphers, + ossl_init_add_all_ciphers) +{ + /* Do nothing */ + return 1; +} + +static CRYPTO_ONCE add_all_digests = CRYPTO_ONCE_STATIC_INIT; +DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_digests) +{ + /* + * OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time + * pulling in all the ciphers during static linking + */ +#ifndef OPENSSL_NO_AUTOALGINIT +# ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_add_all_digests: " + "openssl_add_all_digests()\n"); +# endif + openssl_add_all_digests_int(); +#endif + return 1; +} + +DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_add_all_digests, + ossl_init_add_all_digests) +{ + /* Do nothing */ + return 1; +} + +static CRYPTO_ONCE config = CRYPTO_ONCE_STATIC_INIT; +static int config_inited = 0; +static const OPENSSL_INIT_SETTINGS *conf_settings = NULL; +DEFINE_RUN_ONCE_STATIC(ossl_init_config) +{ + int ret = openssl_config_int(conf_settings); + config_inited = 1; + return ret; +} +DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_config, ossl_init_config) +{ +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, + "OPENSSL_INIT: ossl_init_config: openssl_no_config_int()\n"); +#endif + openssl_no_config_int(); + config_inited = 1; + return 1; +} + +static CRYPTO_ONCE async = CRYPTO_ONCE_STATIC_INIT; +static int async_inited = 0; +DEFINE_RUN_ONCE_STATIC(ossl_init_async) +{ +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_async: async_init()\n"); +#endif + if (!async_init()) + return 0; + async_inited = 1; + return 1; +} + +#ifndef OPENSSL_NO_ENGINE +static CRYPTO_ONCE engine_openssl = CRYPTO_ONCE_STATIC_INIT; +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_openssl) +{ +# ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_openssl: " + "engine_load_openssl_int()\n"); +# endif + engine_load_openssl_int(); + return 1; +} +# ifndef OPENSSL_NO_DEVCRYPTOENG +static CRYPTO_ONCE engine_devcrypto = CRYPTO_ONCE_STATIC_INIT; +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_devcrypto) +{ +# ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_devcrypto: " + "engine_load_devcrypto_int()\n"); +# endif + engine_load_devcrypto_int(); + return 1; +} +# endif + +# ifndef OPENSSL_NO_RDRAND +static CRYPTO_ONCE engine_rdrand = CRYPTO_ONCE_STATIC_INIT; +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_rdrand) +{ +# ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_rdrand: " + "engine_load_rdrand_int()\n"); +# endif + engine_load_rdrand_int(); + return 1; +} +# endif +static CRYPTO_ONCE engine_dynamic = CRYPTO_ONCE_STATIC_INIT; +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_dynamic) +{ +# ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_dynamic: " + "engine_load_dynamic_int()\n"); +# endif + engine_load_dynamic_int(); + return 1; +} +# ifndef OPENSSL_NO_STATIC_ENGINE +# if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK) +static CRYPTO_ONCE engine_padlock = CRYPTO_ONCE_STATIC_INIT; +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_padlock) +{ +# ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_padlock: " + "engine_load_padlock_int()\n"); +# endif + engine_load_padlock_int(); + return 1; +} +# endif +# if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG) +static CRYPTO_ONCE engine_capi = CRYPTO_ONCE_STATIC_INIT; +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_capi) +{ +# ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_capi: " + "engine_load_capi_int()\n"); +# endif + engine_load_capi_int(); + return 1; +} +# endif +# if !defined(OPENSSL_NO_AFALGENG) +static CRYPTO_ONCE engine_afalg = CRYPTO_ONCE_STATIC_INIT; +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_afalg) +{ +# ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_afalg: " + "engine_load_afalg_int()\n"); +# endif + engine_load_afalg_int(); + return 1; +} +# endif +# endif +#endif + +#ifndef OPENSSL_NO_COMP +static CRYPTO_ONCE zlib = CRYPTO_ONCE_STATIC_INIT; + +static int zlib_inited = 0; +DEFINE_RUN_ONCE_STATIC(ossl_init_zlib) +{ + /* Do nothing - we need to know about this for the later cleanup */ + zlib_inited = 1; + return 1; +} +#endif + +static void ossl_init_thread_stop(struct thread_local_inits_st *locals) +{ + /* Can't do much about this */ + if (locals == NULL) + return; + + if (locals->async) { +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_stop: " + "async_delete_thread_state()\n"); +#endif + async_delete_thread_state(); + } + + if (locals->err_state) { +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_stop: " + "err_delete_thread_state()\n"); +#endif + err_delete_thread_state(); + } + + if (locals->rand) { +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_stop: " + "drbg_delete_thread_state()\n"); +#endif + drbg_delete_thread_state(); + } + + OPENSSL_free(locals); +} + +void OPENSSL_thread_stop(void) +{ + if (destructor_key.sane != -1) + ossl_init_thread_stop(ossl_init_get_thread_local(0)); +} + +int ossl_init_thread_start(uint64_t opts) +{ + struct thread_local_inits_st *locals; + + if (!OPENSSL_init_crypto(0, NULL)) + return 0; + + locals = ossl_init_get_thread_local(1); + + if (locals == NULL) + return 0; + + if (opts & OPENSSL_INIT_THREAD_ASYNC) { +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_start: " + "marking thread for async\n"); +#endif + locals->async = 1; + } + + if (opts & OPENSSL_INIT_THREAD_ERR_STATE) { +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_start: " + "marking thread for err_state\n"); +#endif + locals->err_state = 1; + } + + if (opts & OPENSSL_INIT_THREAD_RAND) { +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_start: " + "marking thread for rand\n"); +#endif + locals->rand = 1; + } + + return 1; +} + +void OPENSSL_cleanup(void) +{ + OPENSSL_INIT_STOP *currhandler, *lasthandler; + CRYPTO_THREAD_LOCAL key; + + /* If we've not been inited then no need to deinit */ + if (!base_inited) + return; + + /* Might be explicitly called and also by atexit */ + if (stopped) + return; + stopped = 1; + + /* + * Thread stop may not get automatically called by the thread library for + * the very last thread in some situations, so call it directly. + */ + ossl_init_thread_stop(ossl_init_get_thread_local(0)); + + currhandler = stop_handlers; + while (currhandler != NULL) { + currhandler->handler(); + lasthandler = currhandler; + currhandler = currhandler->next; + OPENSSL_free(lasthandler); + } + stop_handlers = NULL; + + CRYPTO_THREAD_lock_free(init_lock); + init_lock = NULL; + + /* + * We assume we are single-threaded for this function, i.e. no race + * conditions for the various "*_inited" vars below. + */ + +#ifndef OPENSSL_NO_COMP + if (zlib_inited) { +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " + "comp_zlib_cleanup_int()\n"); +#endif + comp_zlib_cleanup_int(); + } +#endif + + if (async_inited) { +# ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " + "async_deinit()\n"); +# endif + async_deinit(); + } + + if (load_crypto_strings_inited) { +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " + "err_free_strings_int()\n"); +#endif + err_free_strings_int(); + } + + key = destructor_key.value; + destructor_key.sane = -1; + CRYPTO_THREAD_cleanup_local(&key); + +#ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " + "rand_cleanup_int()\n"); + fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " + "conf_modules_free_int()\n"); +#ifndef OPENSSL_NO_ENGINE + fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " + "engine_cleanup_int()\n"); +#endif + fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " + "crypto_cleanup_all_ex_data_int()\n"); + fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " + "bio_sock_cleanup_int()\n"); + fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " + "bio_cleanup()\n"); + fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " + "evp_cleanup_int()\n"); + fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " + "obj_cleanup_int()\n"); + fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " + "err_cleanup()\n"); +#endif + /* + * Note that cleanup order is important: + * - rand_cleanup_int could call an ENGINE's RAND cleanup function so + * must be called before engine_cleanup_int() + * - ENGINEs use CRYPTO_EX_DATA and therefore, must be cleaned up + * before the ex data handlers are wiped in CRYPTO_cleanup_all_ex_data(). + * - conf_modules_free_int() can end up in ENGINE code so must be called + * before engine_cleanup_int() + * - ENGINEs and additional EVP algorithms might use added OIDs names so + * obj_cleanup_int() must be called last + */ + rand_cleanup_int(); + rand_drbg_cleanup_int(); + conf_modules_free_int(); +#ifndef OPENSSL_NO_ENGINE + engine_cleanup_int(); +#endif + ossl_store_cleanup_int(); + crypto_cleanup_all_ex_data_int(); + bio_cleanup(); + evp_cleanup_int(); + obj_cleanup_int(); + err_cleanup(); + + CRYPTO_secure_malloc_done(); + + base_inited = 0; +} + +/* + * 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. + */ +int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) +{ + if (stopped) { + if (!(opts & OPENSSL_INIT_BASE_ONLY)) + CRYPTOerr(CRYPTO_F_OPENSSL_INIT_CRYPTO, ERR_R_INIT_FAIL); + return 0; + } + + /* + * When the caller specifies OPENSSL_INIT_BASE_ONLY, that should be the + * *only* option specified. With that option we return immediately after + * doing the requested limited initialization. Note that + * err_shelve_state() called by us via ossl_init_load_crypto_nodelete() + * re-enters OPENSSL_init_crypto() with OPENSSL_INIT_BASE_ONLY, but with + * base already initialized this is a harmless NOOP. + * + * If we remain the only caller of err_shelve_state() the recursion should + * perhaps be removed, but if in doubt, it can be left in place. + */ + if (!RUN_ONCE(&base, ossl_init_base)) + return 0; + if (opts & OPENSSL_INIT_BASE_ONLY) + return 1; + + /* + * Now we don't always set up exit handlers, the INIT_BASE_ONLY calls + * should not have the side-effect of setting up exit handlers, and + * therefore, this code block is below the INIT_BASE_ONLY-conditioned early + * return above. + */ + if ((opts & OPENSSL_INIT_NO_ATEXIT) != 0) { + if (!RUN_ONCE_ALT(®ister_atexit, ossl_init_no_register_atexit, + ossl_init_register_atexit)) + return 0; + } else if (!RUN_ONCE(®ister_atexit, ossl_init_register_atexit)) { + return 0; + } + + if (!RUN_ONCE(&load_crypto_nodelete, ossl_init_load_crypto_nodelete)) + return 0; + + if ((opts & OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS) + && !RUN_ONCE_ALT(&load_crypto_strings, + ossl_init_no_load_crypto_strings, + ossl_init_load_crypto_strings)) + return 0; + + if ((opts & OPENSSL_INIT_LOAD_CRYPTO_STRINGS) + && !RUN_ONCE(&load_crypto_strings, ossl_init_load_crypto_strings)) + return 0; + + if ((opts & OPENSSL_INIT_NO_ADD_ALL_CIPHERS) + && !RUN_ONCE_ALT(&add_all_ciphers, ossl_init_no_add_all_ciphers, + ossl_init_add_all_ciphers)) + return 0; + + if ((opts & OPENSSL_INIT_ADD_ALL_CIPHERS) + && !RUN_ONCE(&add_all_ciphers, ossl_init_add_all_ciphers)) + return 0; + + if ((opts & OPENSSL_INIT_NO_ADD_ALL_DIGESTS) + && !RUN_ONCE_ALT(&add_all_digests, ossl_init_no_add_all_digests, + ossl_init_add_all_digests)) + return 0; + + if ((opts & OPENSSL_INIT_ADD_ALL_DIGESTS) + && !RUN_ONCE(&add_all_digests, ossl_init_add_all_digests)) + return 0; + + if ((opts & OPENSSL_INIT_ATFORK) + && !openssl_init_fork_handlers()) + return 0; + + if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) + && !RUN_ONCE_ALT(&config, ossl_init_no_config, ossl_init_config)) + return 0; + + if (opts & OPENSSL_INIT_LOAD_CONFIG) { + int ret; + CRYPTO_THREAD_write_lock(init_lock); + conf_settings = settings; + ret = RUN_ONCE(&config, ossl_init_config); + conf_settings = NULL; + CRYPTO_THREAD_unlock(init_lock); + if (ret <= 0) + return 0; + } + + if ((opts & OPENSSL_INIT_ASYNC) + && !RUN_ONCE(&async, ossl_init_async)) + return 0; + +#ifndef OPENSSL_NO_ENGINE + if ((opts & OPENSSL_INIT_ENGINE_OPENSSL) + && !RUN_ONCE(&engine_openssl, ossl_init_engine_openssl)) + return 0; +# if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_DEVCRYPTOENG) + if ((opts & OPENSSL_INIT_ENGINE_CRYPTODEV) + && !RUN_ONCE(&engine_devcrypto, ossl_init_engine_devcrypto)) + return 0; +# endif +# ifndef OPENSSL_NO_RDRAND + if ((opts & OPENSSL_INIT_ENGINE_RDRAND) + && !RUN_ONCE(&engine_rdrand, ossl_init_engine_rdrand)) + return 0; +# endif + if ((opts & OPENSSL_INIT_ENGINE_DYNAMIC) + && !RUN_ONCE(&engine_dynamic, ossl_init_engine_dynamic)) + return 0; +# ifndef OPENSSL_NO_STATIC_ENGINE +# if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK) + if ((opts & OPENSSL_INIT_ENGINE_PADLOCK) + && !RUN_ONCE(&engine_padlock, ossl_init_engine_padlock)) + return 0; +# endif +# if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG) + if ((opts & OPENSSL_INIT_ENGINE_CAPI) + && !RUN_ONCE(&engine_capi, ossl_init_engine_capi)) + return 0; +# endif +# if !defined(OPENSSL_NO_AFALGENG) + if ((opts & OPENSSL_INIT_ENGINE_AFALG) + && !RUN_ONCE(&engine_afalg, ossl_init_engine_afalg)) + return 0; +# endif +# endif + if (opts & (OPENSSL_INIT_ENGINE_ALL_BUILTIN + | OPENSSL_INIT_ENGINE_OPENSSL + | OPENSSL_INIT_ENGINE_AFALG)) { + ENGINE_register_all_complete(); + } +#endif + +#ifndef OPENSSL_NO_COMP + if ((opts & OPENSSL_INIT_ZLIB) + && !RUN_ONCE(&zlib, ossl_init_zlib)) + return 0; +#endif + + return 1; +} + +int OPENSSL_atexit(void (*handler)(void)) +{ + OPENSSL_INIT_STOP *newhand; + +#if !defined(OPENSSL_USE_NODELETE)\ + && !defined(OPENSSL_NO_PINSHARED) + { + union { + void *sym; + void (*func)(void); + } handlersym; + + handlersym.func = handler; +# if defined(DSO_WIN32) && !defined(_WIN32_WCE) + { + HMODULE handle = NULL; + BOOL ret; + + /* + * We don't use the DSO route for WIN32 because there is a better + * way + */ + ret = GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS + | GET_MODULE_HANDLE_EX_FLAG_PIN, + handlersym.sym, &handle); + + if (!ret) + return 0; + } +# elif !defined(DSO_NONE) + /* + * Deliberately leak a reference to the handler. This will force the + * library/code containing the handler to remain loaded until we run the + * atexit handler. If -znodelete has been used then this is + * unnecessary. + */ + { + DSO *dso = NULL; + + ERR_set_mark(); + dso = DSO_dsobyaddr(handlersym.sym, DSO_FLAG_NO_UNLOAD_ON_FREE); +# ifdef OPENSSL_INIT_DEBUG + fprintf(stderr, + "OPENSSL_INIT: OPENSSL_atexit: obtained DSO reference? %s\n", + (dso == NULL ? "No!" : "Yes.")); + /* See same code above in ossl_init_base() for an explanation. */ +# endif + DSO_free(dso); + ERR_pop_to_mark(); + } +# endif + } +#endif + + if ((newhand = OPENSSL_malloc(sizeof(*newhand))) == NULL) { + CRYPTOerr(CRYPTO_F_OPENSSL_ATEXIT, ERR_R_MALLOC_FAILURE); + return 0; + } + + newhand->handler = handler; + newhand->next = stop_handlers; + stop_handlers = newhand; + + return 1; +} + +#ifdef OPENSSL_SYS_UNIX +/* + * The following three functions are for OpenSSL developers. This is + * where we set/reset state across fork (called via pthread_atfork when + * it exists, or manually by the application when it doesn't). + * + * WARNING! If you put code in either OPENSSL_fork_parent or + * OPENSSL_fork_child, you MUST MAKE SURE that they are async-signal- + * safe. See this link, for example: + * http://man7.org/linux/man-pages/man7/signal-safety.7.html + */ + +void OPENSSL_fork_prepare(void) +{ +} + +void OPENSSL_fork_parent(void) +{ +} + +void OPENSSL_fork_child(void) +{ +} +#endif |