/*
- * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2016-2021 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
* https://www.openssl.org/source/license.html
*/
-#include "e_os.h"
-#include "internal/cryptlib_int.h"
+/* We need to use some engine deprecated APIs */
+#define OPENSSL_SUPPRESS_DEPRECATED
+
+#include "internal/e_os.h"
+#include "crypto/cryptlib.h"
#include <openssl/err.h>
-#include "internal/rand_int.h"
+#include "crypto/rand.h"
#include "internal/bio.h"
#include <openssl/evp.h>
-#include "internal/evp_int.h"
+#include "crypto/evp.h"
#include "internal/conf.h"
-#include "internal/async.h"
-#include "internal/engine.h"
+#include "crypto/async.h"
+#include "crypto/engine.h"
#include "internal/comp.h"
#include "internal/err.h"
-#include "internal/err_int.h"
-#include "internal/objects.h"
+#include "crypto/err.h"
+#include "crypto/objects.h"
#include <stdlib.h>
#include <assert.h>
#include "internal/thread_once.h"
-#include "internal/dso_conf.h"
+#include "crypto/dso_conf.h"
#include "internal/dso.h"
-#include "internal/store.h"
+#include "crypto/store.h"
+#include <openssl/cmp_util.h> /* for OSSL_CMP_log_close() */
#include <openssl/trace.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 derefernce 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;
-}
+static uint64_t optsdone = 0;
typedef struct ossl_init_stop_st OPENSSL_INIT_STOP;
struct ossl_init_stop_st {
static OPENSSL_INIT_STOP *stop_handlers = NULL;
static CRYPTO_RWLOCK *init_lock = NULL;
+static CRYPTO_THREAD_LOCAL in_init_config_local;
static CRYPTO_ONCE base = CRYPTO_ONCE_STATIC_INIT;
static int base_inited = 0;
DEFINE_RUN_ONCE_STATIC(ossl_init_base)
{
- CRYPTO_THREAD_LOCAL key;
-
- if (ossl_trace_init() == 0)
- return 0;
+ /* 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 (!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;
+ if (!ossl_init_thread())
+ goto err;
+
+ if (!CRYPTO_THREAD_init_local(&in_init_config_local, NULL))
+ goto err;
+
base_inited = 1;
return 1;
CRYPTO_THREAD_lock_free(init_lock);
init_lock = NULL;
- CRYPTO_THREAD_cleanup_local(&key);
return 0;
}
fprintf(stderr, "OPENSSL_INIT: ossl_init_register_atexit()\n");
#endif
#ifndef OPENSSL_SYS_UEFI
-# ifdef _WIN32
+# if defined(_WIN32) && !defined(__BORLANDC__)
/* We use _onexit() in preference because it gets called on DLL unload */
if (_onexit(win32atexit) == NULL)
return 0;
* pulling in all the error strings during static linking
*/
#if !defined(OPENSSL_NO_ERR) && !defined(OPENSSL_NO_AUTOERRINIT)
- OSSL_TRACE(INIT, "err_load_crypto_strings_int()\n");
- ret = err_load_crypto_strings_int();
+ OSSL_TRACE(INIT, "ossl_err_load_crypto_strings()\n");
+ ret = ossl_err_load_crypto_strings();
load_crypto_strings_inited = 1;
#endif
return ret;
return 1;
}
-static CRYPTO_ONCE add_all_macs = CRYPTO_ONCE_STATIC_INIT;
-DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_macs)
-{
- /*
- * OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time
- * pulling in all the macs during static linking
- */
-#ifndef OPENSSL_NO_AUTOALGINIT
- OSSL_TRACE(INIT, "openssl_add_all_macs_int()\n");
- openssl_add_all_macs_int();
-#endif
- return 1;
-}
-
-DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_add_all_macs, ossl_init_add_all_macs)
-{
- /* 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);
+ int ret = ossl_config_int(NULL);
+
+ config_inited = 1;
+ return ret;
+}
+DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_config_settings, ossl_init_config)
+{
+ int ret = ossl_config_int(conf_settings);
+
config_inited = 1;
return ret;
}
DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_config, ossl_init_config)
{
- OSSL_TRACE(INIT, "openssl_no_config_int()\n");
- openssl_no_config_int();
+ OSSL_TRACE(INIT, "ossl_no_config_int()\n");
+ ossl_no_config_int();
config_inited = 1;
return 1;
}
# 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) {
- OSSL_TRACE(INIT, "async_delete_thread_state()\n");
- async_delete_thread_state();
- }
-
- if (locals->err_state) {
- OSSL_TRACE(INIT, "err_delete_thread_state()\n");
- err_delete_thread_state();
- }
-
- if (locals->rand) {
- OSSL_TRACE(INIT, "drbg_delete_thread_state()\n");
- 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) {
- OSSL_TRACE(INIT,
- "ossl_init_thread_start: "
- "marking thread for async\n");
- locals->async = 1;
- }
-
- if (opts & OPENSSL_INIT_THREAD_ERR_STATE) {
- OSSL_TRACE(INIT,
- "ossl_init_thread_start: "
- "marking thread for err_state\n");
- locals->err_state = 1;
- }
-
- if (opts & OPENSSL_INIT_THREAD_RAND) {
- OSSL_TRACE(INIT,
- "ossl_init_thread_start: "
- "marking thread for rand\n");
- locals->rand = 1;
- }
-
- return 1;
-}
-
void OPENSSL_cleanup(void)
{
OPENSSL_INIT_STOP *currhandler, *lasthandler;
- CRYPTO_THREAD_LOCAL key;
+
+ /*
+ * At some point we should consider looking at this function with a view to
+ * moving most/all of this into onfree handlers in OSSL_LIB_CTX.
+ */
/* If we've not been inited then no need to deinit */
if (!base_inited)
* 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) {
CRYPTO_THREAD_lock_free(init_lock);
init_lock = NULL;
+ CRYPTO_THREAD_cleanup_local(&in_init_config_local);
+
/*
* 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) {
- OSSL_TRACE(INIT, "OPENSSL_cleanup: comp_zlib_cleanup_int()\n");
- comp_zlib_cleanup_int();
- }
+ OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_comp_zlib_cleanup()\n");
+ ossl_comp_zlib_cleanup();
#endif
if (async_inited) {
err_free_strings_int();
}
- key = destructor_key.value;
- destructor_key.sane = -1;
- CRYPTO_THREAD_cleanup_local(&key);
-
/*
* Note that cleanup order is important:
- * - rand_cleanup_int could call an ENGINE's RAND cleanup function so
+ * - ossl_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 the ex data handlers are wiped during default ossl_lib_ctx deinit.
+ * - ossl_config_modules_free() 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
+ * ossl_obj_cleanup_int() must be called last
*/
- OSSL_TRACE(INIT, "OPENSSL_cleanup: rand_cleanup_int()\n");
- rand_cleanup_int();
+ OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_rand_cleanup_int()\n");
+ ossl_rand_cleanup_int();
- OSSL_TRACE(INIT, "OPENSSL_cleanup: rand_drbg_cleanup_int()\n");
- rand_drbg_cleanup_int();
+ OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_config_modules_free()\n");
+ ossl_config_modules_free();
- OSSL_TRACE(INIT, "OPENSSL_cleanup: conf_modules_free_int()\n");
- conf_modules_free_int();
#ifndef OPENSSL_NO_ENGINE
OSSL_TRACE(INIT, "OPENSSL_cleanup: engine_cleanup_int()\n");
engine_cleanup_int();
#endif
+
+#ifndef OPENSSL_NO_DEPRECATED_3_0
OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_store_cleanup_int()\n");
ossl_store_cleanup_int();
+#endif
- OSSL_TRACE(INIT, "OPENSSL_cleanup: crypto_cleanup_all_ex_data_int()\n");
- crypto_cleanup_all_ex_data_int();
+ OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_lib_ctx_default_deinit()\n");
+ ossl_lib_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: ossl_obj_cleanup_int()\n");
+ ossl_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();
+#ifndef OPENSSL_NO_CMP
+ OSSL_TRACE(INIT, "OPENSSL_cleanup: OSSL_CMP_log_close()\n");
+ OSSL_CMP_log_close();
+#endif
+
OSSL_TRACE(INIT, "OPENSSL_cleanup: ossl_trace_cleanup()\n");
ossl_trace_cleanup();
*/
int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings)
{
+ uint64_t tmp;
+ int aloaddone = 0;
+
+ /* Applications depend on 0 being returned when cleanup was already done */
if (stopped) {
if (!(opts & OPENSSL_INIT_BASE_ONLY))
- CRYPTOerr(CRYPTO_F_OPENSSL_INIT_CRYPTO, ERR_R_INIT_FAIL);
+ ERR_raise(ERR_LIB_CRYPTO, ERR_R_INIT_FAIL);
return 0;
}
/*
+ * We ignore failures from this function. It is probably because we are
+ * on a platform that doesn't support lockless atomic loads (we may not
+ * have created init_lock yet so we can't use it). This is just an
+ * optimisation to skip the full checks in this function if we don't need
+ * to, so we carry on regardless in the event of failure.
+ *
+ * There could be a race here with other threads, so that optsdone has not
+ * been updated yet, even though the options have in fact been initialised.
+ * This doesn't matter - it just means we will run the full function
+ * unnecessarily - but all the critical code is contained in RUN_ONCE
+ * functions anyway so we are safe.
+ */
+ if (CRYPTO_atomic_load(&optsdone, &tmp, NULL)) {
+ if ((tmp & opts) == opts)
+ return 1;
+ aloaddone = 1;
+ }
+
+ /*
+ * At some point we should look at this function with a view to moving
+ * most/all of this into OSSL_LIB_CTX.
+ *
* 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
if (opts & OPENSSL_INIT_BASE_ONLY)
return 1;
+ /*
+ * init_lock should definitely be set up now, so we can now repeat the
+ * same check from above but be sure that it will work even on platforms
+ * without lockless CRYPTO_atomic_load
+ */
+ if (!aloaddone) {
+ if (!CRYPTO_atomic_load(&optsdone, &tmp, init_lock))
+ return 0;
+ if ((tmp & opts) == opts)
+ 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
&& !RUN_ONCE(&add_all_digests, ossl_init_add_all_digests))
return 0;
- if ((opts & OPENSSL_INIT_NO_ADD_ALL_MACS)
- && !RUN_ONCE_ALT(&add_all_macs, ossl_init_no_add_all_macs,
- ossl_init_add_all_macs))
- return 0;
-
- if ((opts & OPENSSL_INIT_ADD_ALL_MACS)
- && !RUN_ONCE(&add_all_macs, ossl_init_add_all_macs))
- return 0;
-
if ((opts & OPENSSL_INIT_ATFORK)
&& !openssl_init_fork_handlers())
return 0;
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;
+ int loading = CRYPTO_THREAD_get_local(&in_init_config_local) != NULL;
+
+ /* If called recursively from OBJ_ calls, just skip it. */
+ if (!loading) {
+ int ret;
+
+ if (!CRYPTO_THREAD_set_local(&in_init_config_local, (void *)-1))
+ return 0;
+ if (settings == NULL) {
+ ret = RUN_ONCE(&config, ossl_init_config);
+ } else {
+ if (!CRYPTO_THREAD_write_lock(init_lock))
+ return 0;
+ conf_settings = settings;
+ ret = RUN_ONCE_ALT(&config, ossl_init_config_settings,
+ ossl_init_config);
+ conf_settings = NULL;
+ CRYPTO_THREAD_unlock(init_lock);
+ }
+
+ if (ret <= 0)
+ return 0;
+ }
}
if ((opts & OPENSSL_INIT_ASYNC)
}
#endif
-#ifndef OPENSSL_NO_COMP
- if ((opts & OPENSSL_INIT_ZLIB)
- && !RUN_ONCE(&zlib, ossl_init_zlib))
+ if (!CRYPTO_atomic_or(&optsdone, opts, &tmp, init_lock))
return 0;
-#endif
return 1;
}
#endif
if ((newhand = OPENSSL_malloc(sizeof(*newhand))) == NULL) {
- CRYPTOerr(CRYPTO_F_OPENSSL_ATEXIT, ERR_R_MALLOC_FAILURE);
+ ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
return 0;
}
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)
-{
- rand_fork();
-}
-#endif
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