diff options
Diffstat (limited to 'contrib/bind9/lib/dns/openssl_link.c')
| -rw-r--r-- | contrib/bind9/lib/dns/openssl_link.c | 392 |
1 files changed, 0 insertions, 392 deletions
diff --git a/contrib/bind9/lib/dns/openssl_link.c b/contrib/bind9/lib/dns/openssl_link.c deleted file mode 100644 index 56465aa..0000000 --- a/contrib/bind9/lib/dns/openssl_link.c +++ /dev/null @@ -1,392 +0,0 @@ -/* - * Portions Copyright (C) 2004-2012 Internet Systems Consortium, Inc. ("ISC") - * Portions Copyright (C) 1999-2003 Internet Software Consortium. - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NETWORK ASSOCIATES DISCLAIMS - * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE - * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - * - * Portions Copyright (C) 1995-2000 by Network Associates, Inc. - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NETWORK ASSOCIATES DISCLAIMS - * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE - * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR - * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -/* - * Principal Author: Brian Wellington - * $Id$ - */ -#ifdef OPENSSL - -#include <config.h> - -#include <isc/entropy.h> -#include <isc/mem.h> -#include <isc/mutex.h> -#include <isc/mutexblock.h> -#include <isc/string.h> -#include <isc/thread.h> -#include <isc/util.h> - -#include <dns/log.h> - -#include <dst/result.h> - -#include "dst_internal.h" -#include "dst_openssl.h" - -#ifdef USE_ENGINE -#include <openssl/engine.h> -#endif - -static RAND_METHOD *rm = NULL; - -static isc_mutex_t *locks = NULL; -static int nlocks; - -#ifdef USE_ENGINE -static ENGINE *e = NULL; -#endif - -static int -entropy_get(unsigned char *buf, int num) { - isc_result_t result; - if (num < 0) - return (-1); - result = dst__entropy_getdata(buf, (unsigned int) num, ISC_FALSE); - return (result == ISC_R_SUCCESS ? 1 : -1); -} - -static int -entropy_status(void) { - return (dst__entropy_status() > 32); -} - -static int -entropy_getpseudo(unsigned char *buf, int num) { - isc_result_t result; - if (num < 0) - return (-1); - result = dst__entropy_getdata(buf, (unsigned int) num, ISC_TRUE); - return (result == ISC_R_SUCCESS ? 1 : -1); -} - -static void -entropy_add(const void *buf, int num, double entropy) { - /* - * Do nothing. The only call to this provides no useful data anyway. - */ - UNUSED(buf); - UNUSED(num); - UNUSED(entropy); -} - -static void -lock_callback(int mode, int type, const char *file, int line) { - UNUSED(file); - UNUSED(line); - if ((mode & CRYPTO_LOCK) != 0) - LOCK(&locks[type]); - else - UNLOCK(&locks[type]); -} - -static unsigned long -id_callback(void) { - return ((unsigned long)isc_thread_self()); -} - -static void * -mem_alloc(size_t size) { -#ifdef OPENSSL_LEAKS - void *ptr; - - INSIST(dst__memory_pool != NULL); - ptr = isc_mem_allocate(dst__memory_pool, size); - return (ptr); -#else - INSIST(dst__memory_pool != NULL); - return (isc_mem_allocate(dst__memory_pool, size)); -#endif -} - -static void -mem_free(void *ptr) { - INSIST(dst__memory_pool != NULL); - if (ptr != NULL) - isc_mem_free(dst__memory_pool, ptr); -} - -static void * -mem_realloc(void *ptr, size_t size) { -#ifdef OPENSSL_LEAKS - void *rptr; - - INSIST(dst__memory_pool != NULL); - rptr = isc_mem_reallocate(dst__memory_pool, ptr, size); - return (rptr); -#else - INSIST(dst__memory_pool != NULL); - return (isc_mem_reallocate(dst__memory_pool, ptr, size)); -#endif -} - -isc_result_t -dst__openssl_init(const char *engine) { - isc_result_t result; -#ifdef USE_ENGINE - ENGINE *re; -#else - - UNUSED(engine); -#endif - -#ifdef DNS_CRYPTO_LEAKS - CRYPTO_malloc_debug_init(); - CRYPTO_set_mem_debug_options(V_CRYPTO_MDEBUG_ALL); - CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON); -#endif - CRYPTO_set_mem_functions(mem_alloc, mem_realloc, mem_free); - nlocks = CRYPTO_num_locks(); - locks = mem_alloc(sizeof(isc_mutex_t) * nlocks); - if (locks == NULL) - return (ISC_R_NOMEMORY); - result = isc_mutexblock_init(locks, nlocks); - if (result != ISC_R_SUCCESS) - goto cleanup_mutexalloc; - CRYPTO_set_locking_callback(lock_callback); - CRYPTO_set_id_callback(id_callback); - - ERR_load_crypto_strings(); - - rm = mem_alloc(sizeof(RAND_METHOD)); - if (rm == NULL) { - result = ISC_R_NOMEMORY; - goto cleanup_mutexinit; - } - rm->seed = NULL; - rm->bytes = entropy_get; - rm->cleanup = NULL; - rm->add = entropy_add; - rm->pseudorand = entropy_getpseudo; - rm->status = entropy_status; - -#ifdef USE_ENGINE - OPENSSL_config(NULL); - - if (engine != NULL && *engine == '\0') - engine = NULL; - - if (engine != NULL) { - e = ENGINE_by_id(engine); - if (e == NULL) { - result = DST_R_NOENGINE; - goto cleanup_rm; - } - /* This will init the engine. */ - if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) { - result = DST_R_NOENGINE; - goto cleanup_rm; - } - } - - re = ENGINE_get_default_RAND(); - if (re == NULL) { - re = ENGINE_new(); - if (re == NULL) { - result = ISC_R_NOMEMORY; - goto cleanup_rm; - } - ENGINE_set_RAND(re, rm); - ENGINE_set_default_RAND(re); - ENGINE_free(re); - } else - ENGINE_finish(re); -#else - RAND_set_rand_method(rm); -#endif /* USE_ENGINE */ - return (ISC_R_SUCCESS); - -#ifdef USE_ENGINE - cleanup_rm: - if (e != NULL) - ENGINE_free(e); - e = NULL; - mem_free(rm); - rm = NULL; -#endif - cleanup_mutexinit: - CRYPTO_set_locking_callback(NULL); - DESTROYMUTEXBLOCK(locks, nlocks); - cleanup_mutexalloc: - mem_free(locks); - locks = NULL; - return (result); -} - -void -dst__openssl_destroy() { - - /* - * Sequence taken from apps_shutdown() in <apps/apps.h>. - */ - if (rm != NULL) { -#if OPENSSL_VERSION_NUMBER >= 0x00907000L - RAND_cleanup(); -#endif - mem_free(rm); - rm = NULL; - } -#if (OPENSSL_VERSION_NUMBER >= 0x00907000L) - CONF_modules_free(); -#endif - OBJ_cleanup(); - EVP_cleanup(); -#if defined(USE_ENGINE) - if (e != NULL) - ENGINE_free(e); - e = NULL; -#if defined(USE_ENGINE) && OPENSSL_VERSION_NUMBER >= 0x00907000L - ENGINE_cleanup(); -#endif -#endif -#if (OPENSSL_VERSION_NUMBER >= 0x00907000L) - CRYPTO_cleanup_all_ex_data(); -#endif - ERR_clear_error(); - ERR_remove_state(0); - ERR_free_strings(); - -#ifdef DNS_CRYPTO_LEAKS - CRYPTO_mem_leaks_fp(stderr); -#endif - - if (locks != NULL) { - CRYPTO_set_locking_callback(NULL); - DESTROYMUTEXBLOCK(locks, nlocks); - mem_free(locks); - locks = NULL; - } -} - -static isc_result_t -toresult(isc_result_t fallback) { - isc_result_t result = fallback; - unsigned long err = ERR_get_error(); -#ifdef HAVE_OPENSSL_ECDSA - int lib = ERR_GET_LIB(err); -#endif - int reason = ERR_GET_REASON(err); - - switch (reason) { - /* - * ERR_* errors are globally unique; others - * are unique per sublibrary - */ - case ERR_R_MALLOC_FAILURE: - result = ISC_R_NOMEMORY; - break; - default: -#ifdef HAVE_OPENSSL_ECDSA - if (lib == ERR_R_ECDSA_LIB && - reason == ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED) { - result = ISC_R_NOENTROPY; - break; - } -#endif - break; - } - - return (result); -} - -isc_result_t -dst__openssl_toresult(isc_result_t fallback) { - isc_result_t result; - - result = toresult(fallback); - - ERR_clear_error(); - return (result); -} - -isc_result_t -dst__openssl_toresult2(const char *funcname, isc_result_t fallback) { - return (dst__openssl_toresult3(DNS_LOGCATEGORY_GENERAL, - funcname, fallback)); -} - -isc_result_t -dst__openssl_toresult3(isc_logcategory_t *category, - const char *funcname, isc_result_t fallback) { - isc_result_t result; - unsigned long err; - const char *file, *data; - int line, flags; - char buf[256]; - - result = toresult(fallback); - - isc_log_write(dns_lctx, category, - DNS_LOGMODULE_CRYPTO, ISC_LOG_WARNING, - "%s failed (%s)", funcname, - isc_result_totext(result)); - - if (result == ISC_R_NOMEMORY) - goto done; - - for (;;) { - err = ERR_get_error_line_data(&file, &line, &data, &flags); - if (err == 0U) - goto done; - ERR_error_string_n(err, buf, sizeof(buf)); - isc_log_write(dns_lctx, category, - DNS_LOGMODULE_CRYPTO, ISC_LOG_INFO, - "%s:%s:%d:%s", buf, file, line, - (flags & ERR_TXT_STRING) ? data : ""); - } - - done: - ERR_clear_error(); - return (result); -} - -#if defined(USE_ENGINE) -ENGINE * -dst__openssl_getengine(const char *engine) { - - if (engine == NULL) - return (NULL); - if (e == NULL) - return (NULL); - if (strcmp(engine, ENGINE_get_id(e)) == 0) - return (e); - return (NULL); -} -#endif - -#else /* OPENSSL */ - -#include <isc/util.h> - -EMPTY_TRANSLATION_UNIT - -#endif /* OPENSSL */ -/*! \file */ |
