/* * 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). * */ #include #include #include #include #include #include #include #include #include #include #include #include #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); 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; static void ossl_init_base(void) { #ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: ossl_init_base: Setting up stop handlers\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); #endif init_lock = CRYPTO_THREAD_lock_new(); OPENSSL_cpuid_setup(); base_inited = 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) { /* Do nothing in this case */ return; } static void ossl_init_load_crypto_strings(void) { /* * 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 load_crypto_strings_inited = 1; } static CRYPTO_ONCE add_all_ciphers = CRYPTO_ONCE_STATIC_INIT; static void ossl_init_add_all_ciphers(void) { /* * 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 #endif } static CRYPTO_ONCE add_all_digests = CRYPTO_ONCE_STATIC_INIT; static void ossl_init_add_all_digests(void) { /* * 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 #endif } static void ossl_init_no_add_algs(void) { /* Do nothing */ return; } static CRYPTO_ONCE config = CRYPTO_ONCE_STATIC_INIT; static int config_inited = 0; static const char *config_filename; static void ossl_init_config(void) { #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); config_inited = 1; } static void ossl_init_no_config(void) { #ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: ossl_init_config: openssl_no_config_internal()\n"); #endif openssl_no_config_internal(); config_inited = 1; } #ifndef OPENSSL_NO_ASYNC static CRYPTO_ONCE async = CRYPTO_ONCE_STATIC_INIT; static int async_inited = 0; static void ossl_init_async(void) { #ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: ossl_init_async: async_init()\n"); #endif async_init(); async_inited = 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) { # ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_cryptodev: " "engine_load_cryptodev_internal()\n"); # endif engine_load_cryptodev_internal(); } # endif # ifndef OPENSSL_NO_RDRAND static CRYPTO_ONCE engine_rdrand = CRYPTO_ONCE_STATIC_INIT; static void ossl_init_engine_rdrand(void) { # ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_rdrand: " "engine_load_rdrand_internal()\n"); # endif engine_load_rdrand_internal(); } # endif static CRYPTO_ONCE engine_dynamic = CRYPTO_ONCE_STATIC_INIT; static void ossl_init_engine_dynamic(void) { # ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_dynamic: " "engine_load_dynamic_internal()\n"); # endif engine_load_dynamic_internal(); } # ifndef OPENSSL_NO_STATIC_ENGINE # if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK) static CRYPTO_ONCE engine_padlock = CRYPTO_ONCE_STATIC_INIT; static void ossl_init_engine_padlock(void) { # ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_padlock: " "engine_load_padlock_internal()\n"); # endif engine_load_padlock_internal(); } # 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) { # ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_capi: " "engine_load_capi_internal()\n"); # endif engine_load_capi_internal(); } # 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) { # ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_afalg: " "engine_load_afalg_internal()\n"); # endif engine_load_afalg_internal(); } # endif # endif #endif #ifndef OPENSSL_NO_COMP static CRYPTO_ONCE zlib = CRYPTO_ONCE_STATIC_INIT; static int zlib_inited = 0; static void ossl_init_zlib(void) { /* 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; } void OPENSSL_cleanup(void) { OPENSSL_INIT_STOP *currhandler, *lasthandler; /* 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); /* * 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()\n"); #endif COMP_zlib_cleanup(); } #endif #ifndef OPENSSL_NO_ASYNC if (async_inited) { # ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " "async_deinit()\n"); # endif 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(); } 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() * - 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() */ RAND_cleanup(); CONF_modules_free(); #ifndef OPENSSL_NO_ENGINE ENGINE_cleanup(); #endif CRYPTO_cleanup_all_ex_data(); BIO_sock_cleanup(); EVP_cleanup(); OBJ_cleanup(); 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) { static int stoperrset = 0; 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; CRYPTOerr(CRYPTO_F_OPENSSL_INIT_CRYPTO, ERR_R_INIT_FAIL); } return 0; } if (!CRYPTO_THREAD_run_once(&base, ossl_init_base)) return 0; if ((opts & OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS) && !CRYPTO_THREAD_run_once(&load_crypto_strings, ossl_init_no_load_crypto_strings)) return 0; if ((opts & OPENSSL_INIT_LOAD_CRYPTO_STRINGS) && !CRYPTO_THREAD_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)) return 0; if ((opts & OPENSSL_INIT_ADD_ALL_CIPHERS) && !CRYPTO_THREAD_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)) return 0; if ((opts & OPENSSL_INIT_ADD_ALL_DIGESTS) && !CRYPTO_THREAD_run_once(&add_all_digests, ossl_init_add_all_digests)) return 0; if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) && !CRYPTO_THREAD_run_once(&config, ossl_init_no_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); CRYPTO_THREAD_unlock(init_lock); if (!ret) return 0; } #ifndef OPENSSL_NO_ASYNC if ((opts & OPENSSL_INIT_ASYNC) && !CRYPTO_THREAD_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)) 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)) return 0; # endif if ((opts & OPENSSL_INIT_ENGINE_DYNAMIC) && !CRYPTO_THREAD_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) && !CRYPTO_THREAD_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)) 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)) return 0; # endif # endif if (opts & (OPENSSL_INIT_ENGINE_ALL_BUILTIN | OPENSSL_INIT_ENGINE_DASYNC | OPENSSL_INIT_ENGINE_OPENSSL | OPENSSL_INIT_ENGINE_AFALG)) { ENGINE_register_all_complete(); } #endif #ifndef OPENSSL_NO_COMP if ((opts & OPENSSL_INIT_ZLIB) && !CRYPTO_THREAD_run_once(&zlib, ossl_init_zlib)) return 0; #endif return 1; } int OPENSSL_atexit(void (*handler)(void)) { OPENSSL_INIT_STOP *newhand; newhand = OPENSSL_malloc(sizeof(*newhand)); if (newhand == NULL) return 0; newhand->handler = handler; newhand->next = stop_handlers; stop_handlers = newhand; return 1; }