/* * 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 static int stopped = 0; static void ossl_init_thread_stop(struct thread_local_inits_st *locals); /* Implement "once" functionality */ #if !defined(OPENSSL_THREADS) typedef int OPENSSL_INIT_ONCE; # define OPENSSL_INIT_ONCE_STATIC_INIT 0 static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void)) { if (*once == OPENSSL_INIT_ONCE_STATIC_INIT) { *once = 1; init(); } } static int ossl_init_setup_thread_stop(void) { /* * There are no threads to stop. Do nothing. */ return 1; } static void ossl_init_thread_stop_cleanup(void) { } static struct thread_local_inits_st *local = NULL; static struct thread_local_inits_st *ossl_init_get_thread_local(int alloc) { struct thread_local_inits_st *tmp; tmp = local; if (local == NULL && alloc) tmp = local = OPENSSL_zalloc(sizeof(*local)); if (!alloc) local = NULL; return tmp; } #elif defined(OPENSSL_SYS_WINDOWS) # include # if _WIN32_WINNT < 0x0600 /* * Versions before 0x0600 (Windows Vista, Windows Server 2008 or later) do not * have InitOnceExecuteOnce, so we fall back to using a spinlock instead. */ typedef LONG OPENSSL_INIT_ONCE; # define OPENSSL_INIT_ONCE_STATIC_INIT 0 # define ONCE_UNINITED 0 # define ONCE_ININIT 1 # define ONCE_DONE 2 static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void)) { LONG volatile *lock = (LONG *)once; LONG result; if (*lock == ONCE_DONE) return; do { result = InterlockedCompareExchange(lock, ONCE_ININIT, ONCE_UNINITED); if (result == ONCE_UNINITED) { init(); *lock = ONCE_DONE; return; } } while (result == ONCE_ININIT); } # else typedef INIT_ONCE OPENSSL_INIT_ONCE; # define OPENSSL_INIT_ONCE_STATIC_INIT INIT_ONCE_STATIC_INIT static BOOL CALLBACK once_cb(PINIT_ONCE once, PVOID initfp, PVOID *unused) { void (*init)(void) = initfp; init(); return TRUE; } static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void)) { InitOnceExecuteOnce((INIT_ONCE *)once, once_cb, init, NULL); } # endif static DWORD threadstopkey = TLS_OUT_OF_INDEXES; static int ossl_init_setup_thread_stop(void) { /* * We use a dummy thread local key here. We use the destructor to detect * when the thread is going to stop */ threadstopkey = TlsAlloc(); if (threadstopkey == TLS_OUT_OF_INDEXES) return 0; return 1; } static void ossl_init_thread_stop_cleanup(void) { if (threadstopkey != TLS_OUT_OF_INDEXES) { TlsFree(threadstopkey); } } static struct thread_local_inits_st *ossl_init_get_thread_local(int alloc) { struct thread_local_inits_st *local = TlsGetValue(threadstopkey); if (local == NULL && alloc) { local = OPENSSL_zalloc(sizeof *local); TlsSetValue(threadstopkey, local); } if (!alloc) { TlsSetValue(threadstopkey, NULL); } return local; } #else /* pthreads */ # include static pthread_key_t threadstopkey; typedef pthread_once_t OPENSSL_INIT_ONCE; # define OPENSSL_INIT_ONCE_STATIC_INIT PTHREAD_ONCE_INIT static void ossl_init_once_run(OPENSSL_INIT_ONCE *once, void (*init)(void)) { pthread_once(once, init); } static void ossl_init_thread_stop_wrap(void *local) { ossl_init_thread_stop((struct thread_local_inits_st *)local); } static int ossl_init_setup_thread_stop(void) { /* * We use a dummy thread local key here. We use the destructor to detect * when the thread is going to stop */ return (pthread_key_create(&threadstopkey, ossl_init_thread_stop_wrap) == 0); } static void ossl_init_thread_stop_cleanup(void) { } static struct thread_local_inits_st *ossl_init_get_thread_local(int alloc) { struct thread_local_inits_st *local = pthread_getspecific(threadstopkey); if (local == NULL && alloc) { local = OPENSSL_zalloc(sizeof *local); pthread_setspecific(threadstopkey, local); } if (!alloc) { pthread_setspecific(threadstopkey, NULL); } return local; } #endif 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 OPENSSL_INIT_ONCE base = OPENSSL_INIT_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 ossl_init_setup_thread_stop(); atexit(OPENSSL_cleanup); OPENSSL_cpuid_setup(); base_inited = 1; } static OPENSSL_INIT_ONCE load_crypto_strings = OPENSSL_INIT_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 OPENSSL_INIT_ONCE add_all_ciphers = OPENSSL_INIT_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 OPENSSL_INIT_ONCE add_all_digests = OPENSSL_INIT_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 OPENSSL_INIT_ONCE config = OPENSSL_INIT_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; } static OPENSSL_INIT_ONCE async = OPENSSL_INIT_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; } #ifndef OPENSSL_NO_ENGINE static int engine_inited = 0; static OPENSSL_INIT_ONCE engine_openssl = OPENSSL_INIT_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(); engine_inited = 1; } # if !defined(OPENSSL_NO_HW) && \ (defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV)) static OPENSSL_INIT_ONCE engine_cryptodev = OPENSSL_INIT_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(); engine_inited = 1; } # endif # ifndef OPENSSL_NO_RDRAND static OPENSSL_INIT_ONCE engine_rdrand = OPENSSL_INIT_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(); engine_inited = 1; } # endif static OPENSSL_INIT_ONCE engine_dynamic = OPENSSL_INIT_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(); engine_inited = 1; } # ifndef OPENSSL_NO_STATIC_ENGINE # if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK) static OPENSSL_INIT_ONCE engine_padlock = OPENSSL_INIT_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(); engine_inited = 1; } # endif # if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG) static OPENSSL_INIT_ONCE engine_capi = OPENSSL_INIT_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(); engine_inited = 1; } # endif static OPENSSL_INIT_ONCE engine_dasync = OPENSSL_INIT_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(); engine_inited = 1; } # endif #endif static OPENSSL_INIT_ONCE zlib = OPENSSL_INIT_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; } 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_cleanup_thread()\n"); #endif ASYNC_cleanup_thread(); } if (locals->err_state) { #ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_stop: " "ERR_remove_thread_state(NULL)\n"); #endif ERR_remove_thread_state(NULL); } OPENSSL_free(locals); ossl_init_thread_stop_cleanup(); } 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; /* * We assume we are single-threaded for this function, i.e. no race * conditions for the various "*_inited" vars below. */ if (zlib_inited) { #ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " "COMP_zlib_cleanup()\n"); #endif COMP_zlib_cleanup(); } #ifndef OPENSSL_NO_ENGINE if (engine_inited) { # ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " "ENGINE_cleanup()\n"); # endif ENGINE_cleanup(); } #endif if (load_crypto_strings_inited) { #ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: " "ERR_free_strings()\n"); #endif ERR_free_strings(); } #ifdef OPENSSL_INIT_DEBUG fprintf(stderr, "OPENSSL_INIT: OPENSSL_INIT_library_stop: " "CRYPTO_cleanup_all_ex_data()\n"); fprintf(stderr, "OPENSSL_INIT: OPENSSL_INIT_library_stop: " "EVP_cleanup()\n"); fprintf(stderr, "OPENSSL_INIT: OPENSSL_INIT_library_stop: " "CONF_modules_free()\n"); fprintf(stderr, "OPENSSL_INIT: OPENSSL_INIT_library_stop: " "RAND_cleanup()\n"); #endif CRYPTO_cleanup_all_ex_data(); EVP_cleanup(); CONF_modules_free(); RAND_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; } ossl_init_once_run(&base, ossl_init_base); if (opts & OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS) ossl_init_once_run(&load_crypto_strings, ossl_init_no_load_crypto_strings); if (opts & OPENSSL_INIT_LOAD_CRYPTO_STRINGS) ossl_init_once_run(&load_crypto_strings, ossl_init_load_crypto_strings); if (opts & OPENSSL_INIT_NO_ADD_ALL_CIPHERS) ossl_init_once_run(&add_all_ciphers, ossl_init_no_add_algs); if (opts & OPENSSL_INIT_ADD_ALL_CIPHERS) ossl_init_once_run(&add_all_ciphers, ossl_init_add_all_ciphers); if (opts & OPENSSL_INIT_NO_ADD_ALL_DIGESTS) ossl_init_once_run(&add_all_digests, ossl_init_no_add_algs); if (opts & OPENSSL_INIT_ADD_ALL_DIGESTS) ossl_init_once_run(&add_all_digests, ossl_init_add_all_digests); if (opts & OPENSSL_INIT_NO_LOAD_CONFIG) { ossl_init_once_run(&config, ossl_init_no_config); } if (opts & OPENSSL_INIT_LOAD_CONFIG) { CRYPTO_w_lock(CRYPTO_LOCK_INIT); config_filename = (settings == NULL) ? NULL : settings->config_name; ossl_init_once_run(&config, ossl_init_config); CRYPTO_w_unlock(CRYPTO_LOCK_INIT); } if (opts & OPENSSL_INIT_ASYNC) { ossl_init_once_run(&async, ossl_init_async); } #ifndef OPENSSL_NO_ENGINE if (opts & OPENSSL_INIT_ENGINE_OPENSSL) { ossl_init_once_run(&engine_openssl, ossl_init_engine_openssl); } # if !defined(OPENSSL_NO_HW) && \ (defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV)) if (opts & OPENSSL_INIT_ENGINE_CRYPTODEV) { ossl_init_once_run(&engine_cryptodev, ossl_init_engine_cryptodev); } # endif # ifndef OPENSSL_NO_RDRAND if (opts & OPENSSL_INIT_ENGINE_RDRAND) { ossl_init_once_run(&engine_rdrand, ossl_init_engine_rdrand); } # endif if (opts & OPENSSL_INIT_ENGINE_DYNAMIC) { ossl_init_once_run(&engine_dynamic, ossl_init_engine_dynamic); } # ifndef OPENSSL_NO_STATIC_ENGINE # if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK) if (opts & OPENSSL_INIT_ENGINE_PADLOCK) { ossl_init_once_run(&engine_padlock, ossl_init_engine_padlock); } # endif # if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG) if (opts & OPENSSL_INIT_ENGINE_CAPI) { ossl_init_once_run(&engine_capi, ossl_init_engine_capi); } # endif if (opts & OPENSSL_INIT_ENGINE_DASYNC) { ossl_init_once_run(&engine_dasync, ossl_init_engine_dasync); } # endif if (opts & (OPENSSL_INIT_ENGINE_ALL_BUILTIN | OPENSSL_INIT_ENGINE_DASYNC | OPENSSL_INIT_ENGINE_OPENSSL)) { ENGINE_register_all_complete(); } #endif if (opts & OPENSSL_INIT_ZLIB) { ossl_init_once_run(&zlib, ossl_init_zlib); } 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; }