Import OpenSSL 1.1.0f
This commit is contained in:
Steve Dower
Steve Dower
668
crypto/init.c
Normal file
668
crypto/init.c
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@@ -0,0 +1,668 @@
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/*
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* Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <internal/cryptlib_int.h>
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#include <openssl/err.h>
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#include <internal/rand.h>
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#include <internal/bio.h>
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#include <openssl/evp.h>
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#include <internal/evp_int.h>
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#include <internal/conf.h>
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#include <internal/async.h>
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#include <internal/engine.h>
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#include <internal/comp.h>
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#include <internal/err.h>
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#include <internal/err_int.h>
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#include <internal/objects.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <internal/thread_once.h>
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#include <internal/dso.h>
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static int stopped = 0;
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static void ossl_init_thread_stop(struct thread_local_inits_st *locals);
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static CRYPTO_THREAD_LOCAL threadstopkey;
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static void ossl_init_thread_stop_wrap(void *local)
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{
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ossl_init_thread_stop((struct thread_local_inits_st *)local);
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}
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static struct thread_local_inits_st *ossl_init_get_thread_local(int alloc)
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{
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struct thread_local_inits_st *local =
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CRYPTO_THREAD_get_local(&threadstopkey);
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if (local == NULL && alloc) {
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local = OPENSSL_zalloc(sizeof *local);
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CRYPTO_THREAD_set_local(&threadstopkey, local);
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}
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if (!alloc) {
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CRYPTO_THREAD_set_local(&threadstopkey, NULL);
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}
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return local;
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}
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typedef struct ossl_init_stop_st OPENSSL_INIT_STOP;
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struct ossl_init_stop_st {
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void (*handler)(void);
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OPENSSL_INIT_STOP *next;
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};
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static OPENSSL_INIT_STOP *stop_handlers = NULL;
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static CRYPTO_RWLOCK *init_lock = NULL;
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static CRYPTO_ONCE base = CRYPTO_ONCE_STATIC_INIT;
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static int base_inited = 0;
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DEFINE_RUN_ONCE_STATIC(ossl_init_base)
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{
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#ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_base: Setting up stop handlers\n");
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#endif
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/*
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* We use a dummy thread local key here. We use the destructor to detect
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* when the thread is going to stop (where that feature is available)
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*/
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CRYPTO_THREAD_init_local(&threadstopkey, ossl_init_thread_stop_wrap);
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#ifndef OPENSSL_SYS_UEFI
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atexit(OPENSSL_cleanup);
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#endif
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if ((init_lock = CRYPTO_THREAD_lock_new()) == NULL)
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return 0;
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OPENSSL_cpuid_setup();
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/*
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* BIG FAT WARNING!
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* Everything needed to be initialized in this function before threads
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* come along MUST happen before base_inited is set to 1, or we will
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* see race conditions.
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*/
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base_inited = 1;
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#if !defined(OPENSSL_NO_DSO) && !defined(OPENSSL_USE_NODELETE)
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# ifdef DSO_WIN32
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{
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HMODULE handle = NULL;
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BOOL ret;
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/* We don't use the DSO route for WIN32 because there is a better way */
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ret = GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
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| GET_MODULE_HANDLE_EX_FLAG_PIN,
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(void *)&base_inited, &handle);
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return (ret == TRUE) ? 1 : 0;
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}
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# else
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/*
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* Deliberately leak a reference to ourselves. This will force the library
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* to remain loaded until the atexit() handler is run at process exit.
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*/
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{
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DSO *dso = NULL;
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ERR_set_mark();
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dso = DSO_dsobyaddr(&base_inited, DSO_FLAG_NO_UNLOAD_ON_FREE);
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DSO_free(dso);
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ERR_pop_to_mark();
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}
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# endif
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#endif
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return 1;
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}
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static CRYPTO_ONCE load_crypto_strings = CRYPTO_ONCE_STATIC_INIT;
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static int load_crypto_strings_inited = 0;
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DEFINE_RUN_ONCE_STATIC(ossl_init_no_load_crypto_strings)
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{
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/* Do nothing in this case */
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return 1;
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}
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DEFINE_RUN_ONCE_STATIC(ossl_init_load_crypto_strings)
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{
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int ret = 1;
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/*
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* OPENSSL_NO_AUTOERRINIT is provided here to prevent at compile time
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* pulling in all the error strings during static linking
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*/
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#if !defined(OPENSSL_NO_ERR) && !defined(OPENSSL_NO_AUTOERRINIT)
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# ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_load_crypto_strings: "
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"err_load_crypto_strings_int()\n");
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# endif
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ret = err_load_crypto_strings_int();
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load_crypto_strings_inited = 1;
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#endif
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return ret;
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}
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static CRYPTO_ONCE add_all_ciphers = CRYPTO_ONCE_STATIC_INIT;
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DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_ciphers)
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{
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/*
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* OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time
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* pulling in all the ciphers during static linking
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*/
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#ifndef OPENSSL_NO_AUTOALGINIT
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# ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_add_all_ciphers: "
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"openssl_add_all_ciphers_int()\n");
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# endif
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openssl_add_all_ciphers_int();
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#endif
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return 1;
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}
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static CRYPTO_ONCE add_all_digests = CRYPTO_ONCE_STATIC_INIT;
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DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_digests)
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{
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/*
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* OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time
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* pulling in all the ciphers during static linking
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*/
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#ifndef OPENSSL_NO_AUTOALGINIT
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# ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_add_all_digests: "
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"openssl_add_all_digests()\n");
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# endif
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openssl_add_all_digests_int();
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#endif
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return 1;
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}
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DEFINE_RUN_ONCE_STATIC(ossl_init_no_add_algs)
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{
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/* Do nothing */
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return 1;
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}
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static CRYPTO_ONCE config = CRYPTO_ONCE_STATIC_INIT;
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static int config_inited = 0;
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static const char *appname;
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DEFINE_RUN_ONCE_STATIC(ossl_init_config)
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{
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#ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr,
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"OPENSSL_INIT: ossl_init_config: openssl_config(%s)\n",
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appname == NULL ? "NULL" : appname);
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#endif
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openssl_config_int(appname);
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config_inited = 1;
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return 1;
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}
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DEFINE_RUN_ONCE_STATIC(ossl_init_no_config)
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{
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#ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr,
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"OPENSSL_INIT: ossl_init_config: openssl_no_config_int()\n");
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#endif
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openssl_no_config_int();
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config_inited = 1;
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return 1;
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}
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static CRYPTO_ONCE async = CRYPTO_ONCE_STATIC_INIT;
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static int async_inited = 0;
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DEFINE_RUN_ONCE_STATIC(ossl_init_async)
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{
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#ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_async: async_init()\n");
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#endif
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if (!async_init())
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return 0;
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async_inited = 1;
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return 1;
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}
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#ifndef OPENSSL_NO_ENGINE
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static CRYPTO_ONCE engine_openssl = CRYPTO_ONCE_STATIC_INIT;
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DEFINE_RUN_ONCE_STATIC(ossl_init_engine_openssl)
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{
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# ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_openssl: "
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"engine_load_openssl_int()\n");
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# endif
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engine_load_openssl_int();
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return 1;
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}
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# if !defined(OPENSSL_NO_HW) && \
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(defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV))
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static CRYPTO_ONCE engine_cryptodev = CRYPTO_ONCE_STATIC_INIT;
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DEFINE_RUN_ONCE_STATIC(ossl_init_engine_cryptodev)
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{
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# ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_cryptodev: "
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"engine_load_cryptodev_int()\n");
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# endif
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engine_load_cryptodev_int();
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return 1;
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}
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# endif
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# ifndef OPENSSL_NO_RDRAND
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static CRYPTO_ONCE engine_rdrand = CRYPTO_ONCE_STATIC_INIT;
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DEFINE_RUN_ONCE_STATIC(ossl_init_engine_rdrand)
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{
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# ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_rdrand: "
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"engine_load_rdrand_int()\n");
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# endif
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engine_load_rdrand_int();
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return 1;
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}
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# endif
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static CRYPTO_ONCE engine_dynamic = CRYPTO_ONCE_STATIC_INIT;
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DEFINE_RUN_ONCE_STATIC(ossl_init_engine_dynamic)
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{
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# ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_dynamic: "
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"engine_load_dynamic_int()\n");
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# endif
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engine_load_dynamic_int();
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return 1;
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}
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# ifndef OPENSSL_NO_STATIC_ENGINE
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# if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK)
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static CRYPTO_ONCE engine_padlock = CRYPTO_ONCE_STATIC_INIT;
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DEFINE_RUN_ONCE_STATIC(ossl_init_engine_padlock)
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{
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# ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_padlock: "
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"engine_load_padlock_int()\n");
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# endif
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engine_load_padlock_int();
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return 1;
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}
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# endif
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# if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG)
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static CRYPTO_ONCE engine_capi = CRYPTO_ONCE_STATIC_INIT;
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DEFINE_RUN_ONCE_STATIC(ossl_init_engine_capi)
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{
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# ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_capi: "
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"engine_load_capi_int()\n");
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# endif
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engine_load_capi_int();
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return 1;
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}
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# endif
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# if !defined(OPENSSL_NO_AFALGENG)
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static CRYPTO_ONCE engine_afalg = CRYPTO_ONCE_STATIC_INIT;
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DEFINE_RUN_ONCE_STATIC(ossl_init_engine_afalg)
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{
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# ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_afalg: "
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"engine_load_afalg_int()\n");
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# endif
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engine_load_afalg_int();
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return 1;
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}
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# endif
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# endif
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#endif
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#ifndef OPENSSL_NO_COMP
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static CRYPTO_ONCE zlib = CRYPTO_ONCE_STATIC_INIT;
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static int zlib_inited = 0;
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DEFINE_RUN_ONCE_STATIC(ossl_init_zlib)
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{
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/* Do nothing - we need to know about this for the later cleanup */
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zlib_inited = 1;
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return 1;
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}
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#endif
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static void ossl_init_thread_stop(struct thread_local_inits_st *locals)
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{
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/* Can't do much about this */
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if (locals == NULL)
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return;
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if (locals->async) {
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#ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_stop: "
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"ASYNC_cleanup_thread()\n");
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#endif
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ASYNC_cleanup_thread();
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}
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if (locals->err_state) {
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#ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_stop: "
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"err_delete_thread_state()\n");
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#endif
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err_delete_thread_state();
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}
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OPENSSL_free(locals);
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}
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void OPENSSL_thread_stop(void)
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{
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ossl_init_thread_stop(
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(struct thread_local_inits_st *)ossl_init_get_thread_local(0));
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}
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int ossl_init_thread_start(uint64_t opts)
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{
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struct thread_local_inits_st *locals = ossl_init_get_thread_local(1);
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if (locals == NULL)
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return 0;
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if (opts & OPENSSL_INIT_THREAD_ASYNC) {
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#ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_start: "
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"marking thread for async\n");
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#endif
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locals->async = 1;
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}
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if (opts & OPENSSL_INIT_THREAD_ERR_STATE) {
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#ifdef OPENSSL_INIT_DEBUG
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fprintf(stderr, "OPENSSL_INIT: ossl_init_thread_start: "
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"marking thread for err_state\n");
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#endif
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locals->err_state = 1;
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}
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return 1;
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}
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void OPENSSL_cleanup(void)
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{
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OPENSSL_INIT_STOP *currhandler, *lasthandler;
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/* If we've not been inited then no need to deinit */
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if (!base_inited)
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return;
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/* Might be explicitly called and also by atexit */
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if (stopped)
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return;
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stopped = 1;
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/*
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* Thread stop may not get automatically called by the thread library for
|
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* the very last thread in some situations, so call it directly.
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*/
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ossl_init_thread_stop(ossl_init_get_thread_local(0));
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currhandler = stop_handlers;
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while (currhandler != NULL) {
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currhandler->handler();
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lasthandler = currhandler;
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currhandler = currhandler->next;
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OPENSSL_free(lasthandler);
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}
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||||
stop_handlers = NULL;
|
||||
|
||||
CRYPTO_THREAD_lock_free(init_lock);
|
||||
|
||||
/*
|
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* We assume we are single-threaded for this function, i.e. no race
|
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* conditions for the various "*_inited" vars below.
|
||||
*/
|
||||
|
||||
#ifndef OPENSSL_NO_COMP
|
||||
if (zlib_inited) {
|
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#ifdef OPENSSL_INIT_DEBUG
|
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fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: "
|
||||
"comp_zlib_cleanup_int()\n");
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||||
#endif
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||||
comp_zlib_cleanup_int();
|
||||
}
|
||||
#endif
|
||||
|
||||
if (async_inited) {
|
||||
# ifdef OPENSSL_INIT_DEBUG
|
||||
fprintf(stderr, "OPENSSL_INIT: OPENSSL_cleanup: "
|
||||
"async_deinit()\n");
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||||
# endif
|
||||
async_deinit();
|
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}
|
||||
|
||||
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();
|
||||
}
|
||||
|
||||
CRYPTO_THREAD_cleanup_local(&threadstopkey);
|
||||
|
||||
#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();
|
||||
conf_modules_free_int();
|
||||
#ifndef OPENSSL_NO_ENGINE
|
||||
engine_cleanup_int();
|
||||
#endif
|
||||
crypto_cleanup_all_ex_data_int();
|
||||
bio_cleanup();
|
||||
evp_cleanup_int();
|
||||
obj_cleanup_int();
|
||||
err_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 (!base_inited && !RUN_ONCE(&base, ossl_init_base))
|
||||
return 0;
|
||||
|
||||
if ((opts & OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS)
|
||||
&& !RUN_ONCE(&load_crypto_strings,
|
||||
ossl_init_no_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(&add_all_ciphers, ossl_init_no_add_algs))
|
||||
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(&add_all_digests, ossl_init_no_add_algs))
|
||||
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_NO_LOAD_CONFIG)
|
||||
&& !RUN_ONCE(&config, ossl_init_no_config))
|
||||
return 0;
|
||||
|
||||
if (opts & OPENSSL_INIT_LOAD_CONFIG) {
|
||||
int ret;
|
||||
CRYPTO_THREAD_write_lock(init_lock);
|
||||
appname = (settings == NULL) ? NULL : settings->appname;
|
||||
ret = RUN_ONCE(&config, ossl_init_config);
|
||||
CRYPTO_THREAD_unlock(init_lock);
|
||||
if (!ret)
|
||||
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(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV))
|
||||
if ((opts & OPENSSL_INIT_ENGINE_CRYPTODEV)
|
||||
&& !RUN_ONCE(&engine_cryptodev, ossl_init_engine_cryptodev))
|
||||
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_NO_DSO) && !defined(OPENSSL_USE_NODELETE)
|
||||
{
|
||||
union {
|
||||
void *sym;
|
||||
void (*func)(void);
|
||||
} handlersym;
|
||||
|
||||
handlersym.func = handler;
|
||||
# ifdef DSO_WIN32
|
||||
{
|
||||
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;
|
||||
}
|
||||
# else
|
||||
/*
|
||||
* 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
|
||||
* unneccessary.
|
||||
*/
|
||||
{
|
||||
DSO *dso = NULL;
|
||||
|
||||
ERR_set_mark();
|
||||
dso = DSO_dsobyaddr(handlersym.sym, DSO_FLAG_NO_UNLOAD_ON_FREE);
|
||||
DSO_free(dso);
|
||||
ERR_pop_to_mark();
|
||||
}
|
||||
# endif
|
||||
}
|
||||
#endif
|
||||
|
||||
newhand = OPENSSL_malloc(sizeof(*newhand));
|
||||
if (newhand == NULL)
|
||||
return 0;
|
||||
|
||||
newhand->handler = handler;
|
||||
newhand->next = stop_handlers;
|
||||
stop_handlers = newhand;
|
||||
|
||||
return 1;
|
||||
}
|
||||
Reference in New Issue
Block a user