X-Git-Url: https://git.openssl.org/?a=blobdiff_plain;f=crypto%2Finit.c;h=6536bd5266b532a11a254d16f295cf9d7f1af3dd;hb=7f0a8dc7f9c5c35af0f66aca553304737931d55f;hp=fad7a85b824c8c3f7f2dbd08e75092715083b3aa;hpb=114de5b59502e1764c14082e14f07562ad4e6a15;p=openssl.git diff --git a/crypto/init.c b/crypto/init.c index fad7a85b82..6536bd5266 100644 --- a/crypto/init.c +++ b/crypto/init.c @@ -1,105 +1,36 @@ /* - * 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). + * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved. * + * Licensed under the Apache License 2.0 (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 -#include +#include "e_os.h" +#include "internal/cryptlib_int.h" #include -#include +#include "internal/rand_int.h" +#include "internal/bio.h" #include -#include -#include -#include -#ifndef OPENSSL_NO_ENGINE -#include -#endif -#ifndef OPENSSL_NO_COMP -#include -#endif -#include +#include "internal/evp_int.h" +#include "internal/conf.h" +#include "internal/async.h" +#include "internal/engine.h" +#include "internal/comp.h" +#include "internal/err.h" +#include "internal/err_int.h" +#include "internal/objects.h" #include #include +#include "internal/thread_once.h" +#include "internal/dso_conf.h" +#include "internal/dso.h" +#include "internal/store.h" +#include static int stopped = 0; -static void ossl_init_thread_stop(struct thread_local_inits_st *locals); - -static CRYPTO_THREAD_LOCAL threadstopkey; - -static void ossl_init_thread_stop_wrap(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(&threadstopkey); - - if (local == NULL && alloc) { - local = OPENSSL_zalloc(sizeof *local); - CRYPTO_THREAD_set_local(&threadstopkey, local); - } - if (!alloc) { - CRYPTO_THREAD_set_local(&threadstopkey, NULL); - } - - return local; -} - typedef struct ossl_init_stop_st OPENSSL_INIT_STOP; struct ossl_init_stop_st { void (*handler)(void); @@ -111,216 +42,276 @@ static CRYPTO_RWLOCK *init_lock = NULL; static CRYPTO_ONCE base = CRYPTO_ONCE_STATIC_INIT; static int base_inited = 0; -static void ossl_init_base(void) +DEFINE_RUN_ONCE_STATIC(ossl_init_base) +{ + /* no need to init trace */ + + OSSL_TRACE(INIT, "ossl_init_base: setting up stop handlers\n"); +#ifndef OPENSSL_NO_CRYPTO_MDEBUG + ossl_malloc_setup_failures(); +#endif + + if ((init_lock = CRYPTO_THREAD_lock_new()) == NULL) + goto err; + OPENSSL_cpuid_setup(); + + if (!ossl_init_thread()) + return 0; + + base_inited = 1; + return 1; + +err: + OSSL_TRACE(INIT, "ossl_init_base failed!\n"); + CRYPTO_THREAD_lock_free(init_lock); + init_lock = NULL; + + 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_base: Setting up stop handlers\n"); + fprintf(stderr, "OPENSSL_INIT: ossl_init_register_atexit()\n"); #endif - /* - * We use a dummy thread local key here. We use the destructor to detect - * when the thread is going to stop (where that feature is available) - */ - CRYPTO_THREAD_init_local(&threadstopkey, ossl_init_thread_stop_wrap); #ifndef OPENSSL_SYS_UEFI - atexit(OPENSSL_cleanup); +# 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 - init_lock = CRYPTO_THREAD_lock_new(); - OPENSSL_cpuid_setup(); - base_inited = 1; + + return 1; } -static CRYPTO_ONCE load_crypto_strings = CRYPTO_ONCE_STATIC_INIT; -static int load_crypto_strings_inited = 0; -static void ossl_init_no_load_crypto_strings(void) +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; + return 1; +} + +static CRYPTO_ONCE load_crypto_nodelete = CRYPTO_ONCE_STATIC_INIT; +DEFINE_RUN_ONCE_STATIC(ossl_init_load_crypto_nodelete) +{ + OSSL_TRACE(INIT, "ossl_init_load_crypto_nodelete()\n"); + +#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); + + OSSL_TRACE1(INIT, + "ossl_init_load_crypto_nodelete: " + "obtained DSO reference? %s\n", + (ret == TRUE ? "No!" : "Yes.")); + 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); + /* + * In case of No!, it is uncertain our exit()-handlers can still be + * called. After dlclose() the whole library might have been unloaded + * already. + */ + OSSL_TRACE1(INIT, "obtained DSO reference? %s\n", + (dso == NULL ? "No!" : "Yes.")); + DSO_free(dso); + err_unshelve_state(err); + } +# endif +#endif + + return 1; } -static void ossl_init_load_crypto_strings(void) +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_intern()\n"); -# endif - err_load_crypto_strings_intern(); -#endif + OSSL_TRACE(INIT, "err_load_crypto_strings_int()\n"); + 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; -static void ossl_init_add_all_ciphers(void) +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_internal()\n"); -# endif - openssl_add_all_ciphers_internal(); -# ifndef OPENSSL_NO_ENGINE -# if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV) - ENGINE_setup_bsd_cryptodev(); -# endif -# endif + OSSL_TRACE(INIT, "openssl_add_all_ciphers_int()\n"); + 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; -static void ossl_init_add_all_digests(void) +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_internal()\n"); -# endif - openssl_add_all_digests_internal(); -# ifndef OPENSSL_NO_ENGINE -# if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV) - ENGINE_setup_bsd_cryptodev(); -# endif -# endif + OSSL_TRACE(INIT, "openssl_add_all_digests()\n"); + openssl_add_all_digests_int(); #endif + return 1; } -static void ossl_init_no_add_algs(void) +DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_add_all_digests, + ossl_init_add_all_digests) { /* Do nothing */ - return; + return 1; } static CRYPTO_ONCE config = CRYPTO_ONCE_STATIC_INIT; static int config_inited = 0; -static const char *config_filename; -static void ossl_init_config(void) +static const OPENSSL_INIT_SETTINGS *conf_settings = NULL; +DEFINE_RUN_ONCE_STATIC(ossl_init_config) { -#ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, - "OPENSSL_INIT: ossl_init_config: openssl_config_internal(%s)\n", - config_filename==NULL?"NULL":config_filename); -#endif - openssl_config_internal(config_filename); + int ret = openssl_config_int(conf_settings); config_inited = 1; + return ret; } -static void ossl_init_no_config(void) +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_internal()\n"); -#endif - openssl_no_config_internal(); + OSSL_TRACE(INIT, "openssl_no_config_int()\n"); + openssl_no_config_int(); config_inited = 1; + return 1; } -#ifndef OPENSSL_NO_ASYNC static CRYPTO_ONCE async = CRYPTO_ONCE_STATIC_INIT; static int async_inited = 0; -static void ossl_init_async(void) +DEFINE_RUN_ONCE_STATIC(ossl_init_async) { -#ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: ossl_init_async: async_init()\n"); -#endif - async_init(); + OSSL_TRACE(INIT, "async_init()\n"); + if (!async_init()) + return 0; async_inited = 1; + return 1; } -#endif #ifndef OPENSSL_NO_ENGINE static CRYPTO_ONCE engine_openssl = CRYPTO_ONCE_STATIC_INIT; -static void ossl_init_engine_openssl(void) -{ -# ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_openssl: " - "engine_load_openssl_internal()\n"); -# endif - engine_load_openssl_internal(); -} -# if !defined(OPENSSL_NO_HW) && \ - (defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV)) -static CRYPTO_ONCE engine_cryptodev = CRYPTO_ONCE_STATIC_INIT; -static void ossl_init_engine_cryptodev(void) +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_openssl) { -# ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_cryptodev: " - "engine_load_cryptodev_internal()\n"); -# endif - engine_load_cryptodev_internal(); + OSSL_TRACE(INIT, "engine_load_openssl_int()\n"); + engine_load_openssl_int(); + return 1; } -# endif - # ifndef OPENSSL_NO_RDRAND static CRYPTO_ONCE engine_rdrand = CRYPTO_ONCE_STATIC_INIT; -static void ossl_init_engine_rdrand(void) +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_rdrand) { -# ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_rdrand: " - "engine_load_rdrand_internal()\n"); -# endif - engine_load_rdrand_internal(); + OSSL_TRACE(INIT, "engine_load_rdrand_int()\n"); + engine_load_rdrand_int(); + return 1; } # endif static CRYPTO_ONCE engine_dynamic = CRYPTO_ONCE_STATIC_INIT; -static void ossl_init_engine_dynamic(void) +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_dynamic) { -# ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_dynamic: " - "engine_load_dynamic_internal()\n"); -# endif - engine_load_dynamic_internal(); + OSSL_TRACE(INIT, "engine_load_dynamic_int()\n"); + engine_load_dynamic_int(); + return 1; } # ifndef OPENSSL_NO_STATIC_ENGINE -# if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK) +# ifndef OPENSSL_NO_DEVCRYPTOENG +static CRYPTO_ONCE engine_devcrypto = CRYPTO_ONCE_STATIC_INIT; +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_devcrypto) +{ + OSSL_TRACE(INIT, "engine_load_devcrypto_int()\n"); + engine_load_devcrypto_int(); + return 1; +} +# endif +# if !defined(OPENSSL_NO_PADLOCKENG) static CRYPTO_ONCE engine_padlock = CRYPTO_ONCE_STATIC_INIT; -static void ossl_init_engine_padlock(void) +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_padlock) { -# ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_padlock: " - "engine_load_padlock_internal()\n"); -# endif - engine_load_padlock_internal(); + OSSL_TRACE(INIT, "engine_load_padlock_int()\n"); + 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; -static void ossl_init_engine_capi(void) +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_capi) { -# ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_capi: " - "engine_load_capi_internal()\n"); -# endif - engine_load_capi_internal(); + OSSL_TRACE(INIT, "engine_load_capi_int()\n"); + engine_load_capi_int(); + return 1; } # endif -static CRYPTO_ONCE engine_dasync = CRYPTO_ONCE_STATIC_INIT; -static void ossl_init_engine_dasync(void) -{ -# ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_dasync: " - "engine_load_dasync_internal()\n"); -# endif - engine_load_dasync_internal(); -} # if !defined(OPENSSL_NO_AFALGENG) static CRYPTO_ONCE engine_afalg = CRYPTO_ONCE_STATIC_INIT; -static void ossl_init_engine_afalg(void) +DEFINE_RUN_ONCE_STATIC(ossl_init_engine_afalg) { -# ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_afalg: " - "engine_load_afalg_internal()\n"); -# endif - engine_load_afalg_internal(); + OSSL_TRACE(INIT, "engine_load_afalg_int()\n"); + engine_load_afalg_int(); + return 1; } # endif # endif @@ -330,76 +321,23 @@ static void ossl_init_engine_afalg(void) static CRYPTO_ONCE zlib = CRYPTO_ONCE_STATIC_INIT; static int zlib_inited = 0; -static void ossl_init_zlib(void) +DEFINE_RUN_ONCE_STATIC(ossl_init_zlib) { /* Do nothing - we need to know about this for the later cleanup */ zlib_inited = 1; -} -#endif - -static void ossl_init_thread_stop(struct thread_local_inits_st *locals) -{ - /* Can't do much about this */ - if (locals == NULL) - return; - -#ifndef OPENSSL_NO_ASYNC - if (locals->async) { -#ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_stop: " - "ASYNC_cleanup_thread()\n"); -#endif - ASYNC_cleanup_thread(); - } -#endif - - if (locals->err_state) { -#ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_stop: " - "ERR_remove_thread_state()\n"); -#endif - ERR_remove_thread_state(); - } - - OPENSSL_free(locals); -} - -void OPENSSL_thread_stop(void) -{ - ossl_init_thread_stop( - (struct thread_local_inits_st *)ossl_init_get_thread_local(0)); -} - -int ossl_init_thread_start(uint64_t opts) -{ - struct thread_local_inits_st *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; - } - return 1; } +#endif void OPENSSL_cleanup(void) { OPENSSL_INIT_STOP *currhandler, *lasthandler; + /* + * TODO(3.0): This function needs looking at with a view to moving most/all + * of this into onfree handlers in OPENSSL_CTX. + */ + /* If we've not been inited then no need to deinit */ if (!base_inited) return; @@ -413,7 +351,7 @@ void OPENSSL_cleanup(void) * 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)); + OPENSSL_thread_stop(); currhandler = stop_handlers; while (currhandler != NULL) { @@ -425,6 +363,7 @@ void OPENSSL_cleanup(void) 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 @@ -433,70 +372,68 @@ void OPENSSL_cleanup(void) #ifndef OPENSSL_NO_COMP if (zlib_inited) { -#ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " - "COMP_zlib_cleanup()\n"); -#endif - COMP_zlib_cleanup(); + OSSL_TRACE(INIT, "OPENSSL_cleanup: comp_zlib_cleanup_int()\n"); + comp_zlib_cleanup_int(); } #endif -#ifndef OPENSSL_NO_ASYNC if (async_inited) { -# ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " - "async_deinit()\n"); -# endif + OSSL_TRACE(INIT, "OPENSSL_cleanup: async_deinit()\n"); async_deinit(); } -#endif if (load_crypto_strings_inited) { -#ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " - "ERR_free_strings()\n"); -#endif - ERR_free_strings(); + OSSL_TRACE(INIT, "OPENSSL_cleanup: err_free_strings_int()\n"); + err_free_strings_int(); } - CRYPTO_THREAD_cleanup_local(&threadstopkey); - -#ifdef OPENSSL_INIT_DEBUG - fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " - "RAND_cleanup()\n"); - fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " - "CONF_modules_free()\n"); -#ifndef OPENSSL_NO_ENGINE - fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " - "ENGINE_cleanup()\n"); -#endif - fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " - "CRYPTO_cleanup_all_ex_data()\n"); - fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " - "BIO_sock_cleanup()\n"); - fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " - "EVP_cleanup()\n"); - fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " - "OBJ_cleanup()\n"); -#endif /* * Note that cleanup order is important: - * - RAND_cleanup could call an ENINGE's RAND cleanup function so must be - * called before ENGINE_cleanup() + * - 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() can end up in ENGINE code so must be called before - * ENGINE_cleanup() + * before the ex data handlers are wiped during default openssl_ctx deinit. + * - 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(); - CONF_modules_free(); + OSSL_TRACE(INIT, "OPENSSL_cleanup: rand_cleanup_int()\n"); + rand_cleanup_int(); + + OSSL_TRACE(INIT, "OPENSSL_cleanup: conf_modules_free_int()\n"); + conf_modules_free_int(); + #ifndef OPENSSL_NO_ENGINE - ENGINE_cleanup(); + OSSL_TRACE(INIT, "OPENSSL_cleanup: engine_cleanup_int()\n"); + engine_cleanup_int(); #endif - CRYPTO_cleanup_all_ex_data(); - BIO_sock_cleanup(); - EVP_cleanup(); - OBJ_cleanup(); + OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_store_cleanup_int()\n"); + ossl_store_cleanup_int(); + + OSSL_TRACE(INIT, "OPENSSL_cleanup: openssl_ctx_default_deinit()\n"); + openssl_ctx_default_deinit(); + + ossl_cleanup_thread(); + + OSSL_TRACE(INIT, "OPENSSL_cleanup: bio_cleanup()\n"); + bio_cleanup(); + + OSSL_TRACE(INIT, "OPENSSL_cleanup: evp_cleanup_int()\n"); + evp_cleanup_int(); + + OSSL_TRACE(INIT, "OPENSSL_cleanup: obj_cleanup_int()\n"); + obj_cleanup_int(); + + OSSL_TRACE(INIT, "OPENSSL_cleanup: err_int()\n"); + err_cleanup(); + + OSSL_TRACE(INIT, "OPENSSL_cleanup: CRYPTO_secure_malloc_done()\n"); + CRYPTO_secure_malloc_done(); + + OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_trace_cleanup()\n"); + ossl_trace_cleanup(); + base_inited = 0; } @@ -507,115 +444,138 @@ void OPENSSL_cleanup(void) */ int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) { - static int stoperrset = 0; + /* + * TODO(3.0): This function needs looking at with a view to moving most/all + * of this into OPENSSL_CTX. + */ if (stopped) { - if (!stoperrset) { - /* - * We only ever set this once to avoid getting into an infinite - * loop where the error system keeps trying to init and fails so - * sets an error etc - */ - stoperrset = 1; + if (!(opts & OPENSSL_INIT_BASE_ONLY)) CRYPTOerr(CRYPTO_F_OPENSSL_INIT_CRYPTO, ERR_R_INIT_FAIL); - } return 0; } - if (!CRYPTO_THREAD_run_once(&base, ossl_init_base)) + /* + * 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) - && !CRYPTO_THREAD_run_once(&load_crypto_strings, - ossl_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) - && !CRYPTO_THREAD_run_once(&load_crypto_strings, - ossl_init_load_crypto_strings)) + && !RUN_ONCE(&load_crypto_strings, ossl_init_load_crypto_strings)) return 0; if ((opts & OPENSSL_INIT_NO_ADD_ALL_CIPHERS) - && !CRYPTO_THREAD_run_once(&add_all_ciphers, ossl_init_no_add_algs)) + && !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) - && !CRYPTO_THREAD_run_once(&add_all_ciphers, - ossl_init_add_all_ciphers)) + && !RUN_ONCE(&add_all_ciphers, ossl_init_add_all_ciphers)) return 0; if ((opts & OPENSSL_INIT_NO_ADD_ALL_DIGESTS) - && !CRYPTO_THREAD_run_once(&add_all_digests, ossl_init_no_add_algs)) + && !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) - && !CRYPTO_THREAD_run_once(&add_all_digests, - ossl_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) - && !CRYPTO_THREAD_run_once(&config, ossl_init_no_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); - config_filename = (settings == NULL) ? NULL : settings->config_name; - ret = CRYPTO_THREAD_run_once(&config, ossl_init_config); + conf_settings = settings; + ret = RUN_ONCE(&config, ossl_init_config); + conf_settings = NULL; CRYPTO_THREAD_unlock(init_lock); - if (!ret) + if (ret <= 0) return 0; } -#ifndef OPENSSL_NO_ASYNC if ((opts & OPENSSL_INIT_ASYNC) - && !CRYPTO_THREAD_run_once(&async, ossl_init_async)) + && !RUN_ONCE(&async, ossl_init_async)) return 0; -#endif + #ifndef OPENSSL_NO_ENGINE if ((opts & OPENSSL_INIT_ENGINE_OPENSSL) - && !CRYPTO_THREAD_run_once(&engine_openssl, - ossl_init_engine_openssl)) + && !RUN_ONCE(&engine_openssl, ossl_init_engine_openssl)) return 0; -# if !defined(OPENSSL_NO_HW) && \ - (defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV)) - if ((opts & OPENSSL_INIT_ENGINE_CRYPTODEV) - && !CRYPTO_THREAD_run_once(&engine_cryptodev, - ossl_init_engine_cryptodev)) - return 0; -# endif # ifndef OPENSSL_NO_RDRAND if ((opts & OPENSSL_INIT_ENGINE_RDRAND) - && !CRYPTO_THREAD_run_once(&engine_rdrand, ossl_init_engine_rdrand)) + && !RUN_ONCE(&engine_rdrand, ossl_init_engine_rdrand)) return 0; # endif if ((opts & OPENSSL_INIT_ENGINE_DYNAMIC) - && !CRYPTO_THREAD_run_once(&engine_dynamic, - ossl_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) +# ifndef OPENSSL_NO_DEVCRYPTOENG + if ((opts & OPENSSL_INIT_ENGINE_CRYPTODEV) + && !RUN_ONCE(&engine_devcrypto, ossl_init_engine_devcrypto)) + return 0; +# endif +# if !defined(OPENSSL_NO_PADLOCKENG) if ((opts & OPENSSL_INIT_ENGINE_PADLOCK) - && !CRYPTO_THREAD_run_once(&engine_padlock, - ossl_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) - && !CRYPTO_THREAD_run_once(&engine_capi, ossl_init_engine_capi)) + && !RUN_ONCE(&engine_capi, ossl_init_engine_capi)) return 0; # endif - if ((opts & OPENSSL_INIT_ENGINE_DASYNC) - && !CRYPTO_THREAD_run_once(&engine_dasync, ossl_init_engine_dasync)) - return 0; # if !defined(OPENSSL_NO_AFALGENG) if ((opts & OPENSSL_INIT_ENGINE_AFALG) - && !CRYPTO_THREAD_run_once(&engine_afalg, ossl_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_DASYNC | OPENSSL_INIT_ENGINE_OPENSSL + | OPENSSL_INIT_ENGINE_OPENSSL | OPENSSL_INIT_ENGINE_AFALG)) { ENGINE_register_all_complete(); } @@ -623,7 +583,7 @@ int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) #ifndef OPENSSL_NO_COMP if ((opts & OPENSSL_INIT_ZLIB) - && !CRYPTO_THREAD_run_once(&zlib, ossl_init_zlib)) + && !RUN_ONCE(&zlib, ossl_init_zlib)) return 0; #endif @@ -634,9 +594,58 @@ int OPENSSL_atexit(void (*handler)(void)) { OPENSSL_INIT_STOP *newhand; - newhand = OPENSSL_malloc(sizeof(*newhand)); - if (newhand == NULL) +#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); + /* See same code above in ossl_init_base() for an explanation. */ + OSSL_TRACE1(INIT, + "atexit: obtained DSO reference? %s\n", + (dso == NULL ? "No!" : "Yes.")); + 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; @@ -644,3 +653,29 @@ int OPENSSL_atexit(void (*handler)(void)) 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) +{ + /* TODO(3.0): Inform all providers about a fork event */ +} +#endif