providers/legacyprov.c - third_party/openssl - Git at Google

 /*
  * Copyright 2019-2021 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
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
  */

 #include <string.h>
 #include <stdio.h>
 #include <openssl/core.h>
 #include <openssl/core_dispatch.h>
 #include <openssl/core_names.h>
 #include <openssl/err.h>
 #include <openssl/params.h>
 #include "prov/provider_ctx.h"
 #include "prov/implementations.h"
 #include "prov/names.h"
 #include "prov/providercommon.h"

 /*
  * Forward declarations to ensure that interface functions are correctly
  * defined.
  */
 static OSSL_FUNC_provider_gettable_params_fn legacy_gettable_params;
 static OSSL_FUNC_provider_get_params_fn legacy_get_params;
 static OSSL_FUNC_provider_query_operation_fn legacy_query;

 #define ALG(NAMES, FUNC) { NAMES, "provider=legacy", FUNC }

 #ifdef STATIC_LEGACY
 OSSL_provider_init_fn ossl_legacy_provider_init;
 # define OSSL_provider_init ossl_legacy_provider_init
 #endif

 #ifndef STATIC_LEGACY
 /*
  * Should these function pointers be stored in the provider side provctx?
  * Could they ever be different from one init to the next? We assume not for
  * now.
  */

 /* Functions provided by the core */
 static OSSL_FUNC_core_new_error_fn *c_new_error;
 static OSSL_FUNC_core_set_error_debug_fn *c_set_error_debug;
 static OSSL_FUNC_core_vset_error_fn *c_vset_error;
 static OSSL_FUNC_core_set_error_mark_fn *c_set_error_mark;
 static OSSL_FUNC_core_clear_last_error_mark_fn *c_clear_last_error_mark;
 static OSSL_FUNC_core_pop_error_to_mark_fn *c_pop_error_to_mark;
 #endif

 /* Parameters we provide to the core */
 static const OSSL_PARAM legacy_param_types[] = {
     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_NAME, OSSL_PARAM_UTF8_PTR, NULL, 0),
     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_BUILDINFO, OSSL_PARAM_UTF8_PTR, NULL, 0),
     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_STATUS, OSSL_PARAM_INTEGER, NULL, 0),
     OSSL_PARAM_END
 };

 static const OSSL_PARAM *legacy_gettable_params(void *provctx)
 {
     return legacy_param_types;
 }

 static int legacy_get_params(void *provctx, OSSL_PARAM params[])
 {
     OSSL_PARAM *p;

     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_NAME);
     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, "OpenSSL Legacy Provider"))
         return 0;
     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_VERSION);
     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR))
         return 0;
     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_BUILDINFO);
     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_FULL_VERSION_STR))
         return 0;
     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_STATUS);
     if (p != NULL && !OSSL_PARAM_set_int(p, ossl_prov_is_running()))
         return 0;
     return 1;
 }

 static const OSSL_ALGORITHM legacy_digests[] = {
 #ifndef OPENSSL_NO_MD2
     ALG(PROV_NAMES_MD2, ossl_md2_functions),
 #endif
 #ifndef OPENSSL_NO_MD4
     ALG(PROV_NAMES_MD4, ossl_md4_functions),
 #endif
 #ifndef OPENSSL_NO_MDC2
     ALG(PROV_NAMES_MDC2, ossl_mdc2_functions),
 #endif /* OPENSSL_NO_MDC2 */
 #ifndef OPENSSL_NO_WHIRLPOOL
     ALG(PROV_NAMES_WHIRLPOOL, ossl_wp_functions),
 #endif /* OPENSSL_NO_WHIRLPOOL */
 #ifndef OPENSSL_NO_RMD160
     ALG(PROV_NAMES_RIPEMD_160, ossl_ripemd160_functions),
 #endif /* OPENSSL_NO_RMD160 */
     { NULL, NULL, NULL }
 };

 static const OSSL_ALGORITHM legacy_ciphers[] = {
 #ifndef OPENSSL_NO_CAST
     ALG(PROV_NAMES_CAST5_ECB, ossl_cast5128ecb_functions),
     ALG(PROV_NAMES_CAST5_CBC, ossl_cast5128cbc_functions),
     ALG(PROV_NAMES_CAST5_OFB, ossl_cast5128ofb64_functions),
     ALG(PROV_NAMES_CAST5_CFB, ossl_cast5128cfb64_functions),
 #endif /* OPENSSL_NO_CAST */
 #ifndef OPENSSL_NO_BF
     ALG(PROV_NAMES_BF_ECB, ossl_blowfish128ecb_functions),
     ALG(PROV_NAMES_BF_CBC, ossl_blowfish128cbc_functions),
     ALG(PROV_NAMES_BF_OFB, ossl_blowfish64ofb64_functions),
     ALG(PROV_NAMES_BF_CFB, ossl_blowfish64cfb64_functions),
 #endif /* OPENSSL_NO_BF */
 #ifndef OPENSSL_NO_IDEA
     ALG(PROV_NAMES_IDEA_ECB, ossl_idea128ecb_functions),
     ALG(PROV_NAMES_IDEA_CBC, ossl_idea128cbc_functions),
     ALG(PROV_NAMES_IDEA_OFB, ossl_idea128ofb64_functions),
     ALG(PROV_NAMES_IDEA_CFB, ossl_idea128cfb64_functions),
 #endif /* OPENSSL_NO_IDEA */
 #ifndef OPENSSL_NO_SEED
     ALG(PROV_NAMES_SEED_ECB, ossl_seed128ecb_functions),
     ALG(PROV_NAMES_SEED_CBC, ossl_seed128cbc_functions),
     ALG(PROV_NAMES_SEED_OFB, ossl_seed128ofb128_functions),
     ALG(PROV_NAMES_SEED_CFB, ossl_seed128cfb128_functions),
 #endif /* OPENSSL_NO_SEED */
 #ifndef OPENSSL_NO_RC2
     ALG(PROV_NAMES_RC2_ECB, ossl_rc2128ecb_functions),
     ALG(PROV_NAMES_RC2_CBC, ossl_rc2128cbc_functions),
     ALG(PROV_NAMES_RC2_40_CBC, ossl_rc240cbc_functions),
     ALG(PROV_NAMES_RC2_64_CBC, ossl_rc264cbc_functions),
     ALG(PROV_NAMES_RC2_CFB, ossl_rc2128cfb128_functions),
     ALG(PROV_NAMES_RC2_OFB, ossl_rc2128ofb128_functions),
 #endif /* OPENSSL_NO_RC2 */
 #ifndef OPENSSL_NO_RC4
     ALG(PROV_NAMES_RC4, ossl_rc4128_functions),
     ALG(PROV_NAMES_RC4_40, ossl_rc440_functions),
 # ifndef OPENSSL_NO_MD5
     ALG(PROV_NAMES_RC4_HMAC_MD5, ossl_rc4_hmac_ossl_md5_functions),
 # endif /* OPENSSL_NO_MD5 */
 #endif /* OPENSSL_NO_RC4 */
 #ifndef OPENSSL_NO_RC5
     ALG(PROV_NAMES_RC5_ECB, ossl_rc5128ecb_functions),
     ALG(PROV_NAMES_RC5_CBC, ossl_rc5128cbc_functions),
     ALG(PROV_NAMES_RC5_OFB, ossl_rc5128ofb64_functions),
     ALG(PROV_NAMES_RC5_CFB, ossl_rc5128cfb64_functions),
 #endif /* OPENSSL_NO_RC5 */
 #ifndef OPENSSL_NO_DES
     ALG(PROV_NAMES_DESX_CBC, ossl_tdes_desx_cbc_functions),
     ALG(PROV_NAMES_DES_ECB, ossl_des_ecb_functions),
     ALG(PROV_NAMES_DES_CBC, ossl_des_cbc_functions),
     ALG(PROV_NAMES_DES_OFB, ossl_des_ofb64_functions),
     ALG(PROV_NAMES_DES_CFB, ossl_des_cfb64_functions),
     ALG(PROV_NAMES_DES_CFB1, ossl_des_cfb1_functions),
     ALG(PROV_NAMES_DES_CFB8, ossl_des_cfb8_functions),
 #endif /* OPENSSL_NO_DES */
     { NULL, NULL, NULL }
 };

 static const OSSL_ALGORITHM legacy_kdfs[] = {
     ALG(PROV_NAMES_PBKDF1, ossl_kdf_pbkdf1_functions),
     ALG(PROV_NAMES_PVKKDF, ossl_kdf_pvk_functions),
     { NULL, NULL, NULL }
 };

 static const OSSL_ALGORITHM *legacy_query(void *provctx, int operation_id,
                                           int *no_cache)
 {
     *no_cache = 0;
     switch (operation_id) {
     case OSSL_OP_DIGEST:
         return legacy_digests;
     case OSSL_OP_CIPHER:
         return legacy_ciphers;
     case OSSL_OP_KDF:
         return legacy_kdfs;
     }
     return NULL;
 }

 static void legacy_teardown(void *provctx)
 {
     OSSL_LIB_CTX_free(PROV_LIBCTX_OF(provctx));
     ossl_prov_ctx_free(provctx);
 }

 /* Functions we provide to the core */
 static const OSSL_DISPATCH legacy_dispatch_table[] = {
     { OSSL_FUNC_PROVIDER_TEARDOWN, (void (*)(void))legacy_teardown },
     { OSSL_FUNC_PROVIDER_GETTABLE_PARAMS, (void (*)(void))legacy_gettable_params },
     { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))legacy_get_params },
     { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))legacy_query },
     { 0, NULL }
 };

 int OSSL_provider_init(const OSSL_CORE_HANDLE *handle,
                        const OSSL_DISPATCH *in,
                        const OSSL_DISPATCH **out,
                        void **provctx)
 {
     OSSL_LIB_CTX *libctx = NULL;
 #ifndef STATIC_LEGACY
     const OSSL_DISPATCH *tmp;
 #endif

 #ifndef STATIC_LEGACY
     for (tmp = in; tmp->function_id != 0; tmp++) {
         /*
          * We do not support the scenario of an application linked against
          * multiple versions of libcrypto (e.g. one static and one dynamic),
          * but sharing a single legacy.so. We do a simple sanity check here.
          */
 #define set_func(c, f) if (c == NULL) c = f; else if (c != f) return 0;
         switch (tmp->function_id) {
         case OSSL_FUNC_CORE_NEW_ERROR:
             set_func(c_new_error, OSSL_FUNC_core_new_error(tmp));
             break;
         case OSSL_FUNC_CORE_SET_ERROR_DEBUG:
             set_func(c_set_error_debug, OSSL_FUNC_core_set_error_debug(tmp));
             break;
         case OSSL_FUNC_CORE_VSET_ERROR:
             set_func(c_vset_error, OSSL_FUNC_core_vset_error(tmp));
             break;
         case OSSL_FUNC_CORE_SET_ERROR_MARK:
             set_func(c_set_error_mark, OSSL_FUNC_core_set_error_mark(tmp));
             break;
         case OSSL_FUNC_CORE_CLEAR_LAST_ERROR_MARK:
             set_func(c_clear_last_error_mark,
                      OSSL_FUNC_core_clear_last_error_mark(tmp));
             break;
         case OSSL_FUNC_CORE_POP_ERROR_TO_MARK:
             set_func(c_pop_error_to_mark, OSSL_FUNC_core_pop_error_to_mark(tmp));
             break;
         }
     }
 #endif

     if ((*provctx = ossl_prov_ctx_new()) == NULL
         || (libctx = OSSL_LIB_CTX_new_child(handle, in)) == NULL) {
         OSSL_LIB_CTX_free(libctx);
         legacy_teardown(*provctx);
         *provctx = NULL;
         return 0;
     }
     ossl_prov_ctx_set0_libctx(*provctx, libctx);
     ossl_prov_ctx_set0_handle(*provctx, handle);

     *out = legacy_dispatch_table;

     return 1;
 }

 #ifndef STATIC_LEGACY
 /*
  * Provider specific implementation of libcrypto functions in terms of
  * upcalls.
  */

 /*
  * For ERR functions, we pass a NULL context.  This is valid to do as long
  * as only error codes that the calling libcrypto supports are used.
  */
 void ERR_new(void)
 {
     c_new_error(NULL);
 }

 void ERR_set_debug(const char *file, int line, const char *func)
 {
     c_set_error_debug(NULL, file, line, func);
 }

 void ERR_set_error(int lib, int reason, const char *fmt, ...)
 {
     va_list args;

     va_start(args, fmt);
     c_vset_error(NULL, ERR_PACK(lib, 0, reason), fmt, args);
     va_end(args);
 }

 void ERR_vset_error(int lib, int reason, const char *fmt, va_list args)
 {
     c_vset_error(NULL, ERR_PACK(lib, 0, reason), fmt, args);
 }

 int ERR_set_mark(void)
 {
     return c_set_error_mark(NULL);
 }

 int ERR_clear_last_mark(void)
 {
     return c_clear_last_error_mark(NULL);
 }

 int ERR_pop_to_mark(void)
 {
     return c_pop_error_to_mark(NULL);
 }
 #endif
	/*
	* Copyright 2019-2021 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
	* in the file LICENSE in the source distribution or at
	* https://www.openssl.org/source/license.html
	*/

	#include <string.h>
	#include <stdio.h>
	#include <openssl/core.h>
	#include <openssl/core_dispatch.h>
	#include <openssl/core_names.h>
	#include <openssl/err.h>
	#include <openssl/params.h>
	#include "prov/provider_ctx.h"
	#include "prov/implementations.h"
	#include "prov/names.h"
	#include "prov/providercommon.h"

	/*
	* Forward declarations to ensure that interface functions are correctly
	* defined.
	*/
	static OSSL_FUNC_provider_gettable_params_fn legacy_gettable_params;
	static OSSL_FUNC_provider_get_params_fn legacy_get_params;
	static OSSL_FUNC_provider_query_operation_fn legacy_query;

	#define ALG(NAMES, FUNC) { NAMES, "provider=legacy", FUNC }

	#ifdef STATIC_LEGACY
	OSSL_provider_init_fn ossl_legacy_provider_init;
	# define OSSL_provider_init ossl_legacy_provider_init
	#endif

	#ifndef STATIC_LEGACY
	/*
	* Should these function pointers be stored in the provider side provctx?
	* Could they ever be different from one init to the next? We assume not for
	* now.
	*/

	/* Functions provided by the core */
	static OSSL_FUNC_core_new_error_fn *c_new_error;
	static OSSL_FUNC_core_set_error_debug_fn *c_set_error_debug;
	static OSSL_FUNC_core_vset_error_fn *c_vset_error;
	static OSSL_FUNC_core_set_error_mark_fn *c_set_error_mark;
	static OSSL_FUNC_core_clear_last_error_mark_fn *c_clear_last_error_mark;
	static OSSL_FUNC_core_pop_error_to_mark_fn *c_pop_error_to_mark;
	#endif

	/* Parameters we provide to the core */
	static const OSSL_PARAM legacy_param_types[] = {
	OSSL_PARAM_DEFN(OSSL_PROV_PARAM_NAME, OSSL_PARAM_UTF8_PTR, NULL, 0),
	OSSL_PARAM_DEFN(OSSL_PROV_PARAM_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
	OSSL_PARAM_DEFN(OSSL_PROV_PARAM_BUILDINFO, OSSL_PARAM_UTF8_PTR, NULL, 0),
	OSSL_PARAM_DEFN(OSSL_PROV_PARAM_STATUS, OSSL_PARAM_INTEGER, NULL, 0),
	OSSL_PARAM_END
	};

	static const OSSL_PARAM legacy_gettable_params(void provctx)
	{
	return legacy_param_types;
	}

	static int legacy_get_params(void *provctx, OSSL_PARAM params[])
	{
	OSSL_PARAM *p;

	p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_NAME);
	if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, "OpenSSL Legacy Provider"))
	return 0;
	p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_VERSION);
	if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR))
	return 0;
	p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_BUILDINFO);
	if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_FULL_VERSION_STR))
	return 0;
	p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_STATUS);
	if (p != NULL && !OSSL_PARAM_set_int(p, ossl_prov_is_running()))
	return 0;
	return 1;
	}

	static const OSSL_ALGORITHM legacy_digests[] = {
	#ifndef OPENSSL_NO_MD2
	ALG(PROV_NAMES_MD2, ossl_md2_functions),
	#endif
	#ifndef OPENSSL_NO_MD4
	ALG(PROV_NAMES_MD4, ossl_md4_functions),
	#endif
	#ifndef OPENSSL_NO_MDC2
	ALG(PROV_NAMES_MDC2, ossl_mdc2_functions),
	#endif /* OPENSSL_NO_MDC2 */
	#ifndef OPENSSL_NO_WHIRLPOOL
	ALG(PROV_NAMES_WHIRLPOOL, ossl_wp_functions),
	#endif /* OPENSSL_NO_WHIRLPOOL */
	#ifndef OPENSSL_NO_RMD160
	ALG(PROV_NAMES_RIPEMD_160, ossl_ripemd160_functions),
	#endif /* OPENSSL_NO_RMD160 */
	{ NULL, NULL, NULL }
	};

	static const OSSL_ALGORITHM legacy_ciphers[] = {
	#ifndef OPENSSL_NO_CAST
	ALG(PROV_NAMES_CAST5_ECB, ossl_cast5128ecb_functions),
	ALG(PROV_NAMES_CAST5_CBC, ossl_cast5128cbc_functions),
	ALG(PROV_NAMES_CAST5_OFB, ossl_cast5128ofb64_functions),
	ALG(PROV_NAMES_CAST5_CFB, ossl_cast5128cfb64_functions),
	#endif /* OPENSSL_NO_CAST */
	#ifndef OPENSSL_NO_BF
	ALG(PROV_NAMES_BF_ECB, ossl_blowfish128ecb_functions),
	ALG(PROV_NAMES_BF_CBC, ossl_blowfish128cbc_functions),
	ALG(PROV_NAMES_BF_OFB, ossl_blowfish64ofb64_functions),
	ALG(PROV_NAMES_BF_CFB, ossl_blowfish64cfb64_functions),
	#endif /* OPENSSL_NO_BF */
	#ifndef OPENSSL_NO_IDEA
	ALG(PROV_NAMES_IDEA_ECB, ossl_idea128ecb_functions),
	ALG(PROV_NAMES_IDEA_CBC, ossl_idea128cbc_functions),
	ALG(PROV_NAMES_IDEA_OFB, ossl_idea128ofb64_functions),
	ALG(PROV_NAMES_IDEA_CFB, ossl_idea128cfb64_functions),
	#endif /* OPENSSL_NO_IDEA */
	#ifndef OPENSSL_NO_SEED
	ALG(PROV_NAMES_SEED_ECB, ossl_seed128ecb_functions),
	ALG(PROV_NAMES_SEED_CBC, ossl_seed128cbc_functions),
	ALG(PROV_NAMES_SEED_OFB, ossl_seed128ofb128_functions),
	ALG(PROV_NAMES_SEED_CFB, ossl_seed128cfb128_functions),
	#endif /* OPENSSL_NO_SEED */
	#ifndef OPENSSL_NO_RC2
	ALG(PROV_NAMES_RC2_ECB, ossl_rc2128ecb_functions),
	ALG(PROV_NAMES_RC2_CBC, ossl_rc2128cbc_functions),
	ALG(PROV_NAMES_RC2_40_CBC, ossl_rc240cbc_functions),
	ALG(PROV_NAMES_RC2_64_CBC, ossl_rc264cbc_functions),
	ALG(PROV_NAMES_RC2_CFB, ossl_rc2128cfb128_functions),
	ALG(PROV_NAMES_RC2_OFB, ossl_rc2128ofb128_functions),
	#endif /* OPENSSL_NO_RC2 */
	#ifndef OPENSSL_NO_RC4
	ALG(PROV_NAMES_RC4, ossl_rc4128_functions),
	ALG(PROV_NAMES_RC4_40, ossl_rc440_functions),
	# ifndef OPENSSL_NO_MD5
	ALG(PROV_NAMES_RC4_HMAC_MD5, ossl_rc4_hmac_ossl_md5_functions),
	# endif /* OPENSSL_NO_MD5 */
	#endif /* OPENSSL_NO_RC4 */
	#ifndef OPENSSL_NO_RC5
	ALG(PROV_NAMES_RC5_ECB, ossl_rc5128ecb_functions),
	ALG(PROV_NAMES_RC5_CBC, ossl_rc5128cbc_functions),
	ALG(PROV_NAMES_RC5_OFB, ossl_rc5128ofb64_functions),
	ALG(PROV_NAMES_RC5_CFB, ossl_rc5128cfb64_functions),
	#endif /* OPENSSL_NO_RC5 */
	#ifndef OPENSSL_NO_DES
	ALG(PROV_NAMES_DESX_CBC, ossl_tdes_desx_cbc_functions),
	ALG(PROV_NAMES_DES_ECB, ossl_des_ecb_functions),
	ALG(PROV_NAMES_DES_CBC, ossl_des_cbc_functions),
	ALG(PROV_NAMES_DES_OFB, ossl_des_ofb64_functions),
	ALG(PROV_NAMES_DES_CFB, ossl_des_cfb64_functions),
	ALG(PROV_NAMES_DES_CFB1, ossl_des_cfb1_functions),
	ALG(PROV_NAMES_DES_CFB8, ossl_des_cfb8_functions),
	#endif /* OPENSSL_NO_DES */
	{ NULL, NULL, NULL }
	};

	static const OSSL_ALGORITHM legacy_kdfs[] = {
	ALG(PROV_NAMES_PBKDF1, ossl_kdf_pbkdf1_functions),
	ALG(PROV_NAMES_PVKKDF, ossl_kdf_pvk_functions),
	{ NULL, NULL, NULL }
	};

	static const OSSL_ALGORITHM legacy_query(void provctx, int operation_id,
	int *no_cache)
	{
	*no_cache = 0;
	switch (operation_id) {
	case OSSL_OP_DIGEST:
	return legacy_digests;
	case OSSL_OP_CIPHER:
	return legacy_ciphers;
	case OSSL_OP_KDF:
	return legacy_kdfs;
	}
	return NULL;
	}

	static void legacy_teardown(void *provctx)
	{
	OSSL_LIB_CTX_free(PROV_LIBCTX_OF(provctx));
	ossl_prov_ctx_free(provctx);
	}

	/* Functions we provide to the core */
	static const OSSL_DISPATCH legacy_dispatch_table[] = {
	{ OSSL_FUNC_PROVIDER_TEARDOWN, (void (*)(void))legacy_teardown },
	{ OSSL_FUNC_PROVIDER_GETTABLE_PARAMS, (void (*)(void))legacy_gettable_params },
	{ OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))legacy_get_params },
	{ OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))legacy_query },
	{ 0, NULL }
	};

	int OSSL_provider_init(const OSSL_CORE_HANDLE *handle,
	const OSSL_DISPATCH *in,
	const OSSL_DISPATCH **out,
	void **provctx)
	{
	OSSL_LIB_CTX *libctx = NULL;
	#ifndef STATIC_LEGACY
	const OSSL_DISPATCH *tmp;
	#endif

	#ifndef STATIC_LEGACY
	for (tmp = in; tmp->function_id != 0; tmp++) {
	/*
	* We do not support the scenario of an application linked against
	* multiple versions of libcrypto (e.g. one static and one dynamic),
	* but sharing a single legacy.so. We do a simple sanity check here.
	*/
	#define set_func(c, f) if (c == NULL) c = f; else if (c != f) return 0;
	switch (tmp->function_id) {
	case OSSL_FUNC_CORE_NEW_ERROR:
	set_func(c_new_error, OSSL_FUNC_core_new_error(tmp));
	break;
	case OSSL_FUNC_CORE_SET_ERROR_DEBUG:
	set_func(c_set_error_debug, OSSL_FUNC_core_set_error_debug(tmp));
	break;
	case OSSL_FUNC_CORE_VSET_ERROR:
	set_func(c_vset_error, OSSL_FUNC_core_vset_error(tmp));
	break;
	case OSSL_FUNC_CORE_SET_ERROR_MARK:
	set_func(c_set_error_mark, OSSL_FUNC_core_set_error_mark(tmp));
	break;
	case OSSL_FUNC_CORE_CLEAR_LAST_ERROR_MARK:
	set_func(c_clear_last_error_mark,
	OSSL_FUNC_core_clear_last_error_mark(tmp));
	break;
	case OSSL_FUNC_CORE_POP_ERROR_TO_MARK:
	set_func(c_pop_error_to_mark, OSSL_FUNC_core_pop_error_to_mark(tmp));
	break;
	}
	}
	#endif

	if ((*provctx = ossl_prov_ctx_new()) == NULL
	\|\| (libctx = OSSL_LIB_CTX_new_child(handle, in)) == NULL) {
	OSSL_LIB_CTX_free(libctx);
	legacy_teardown(*provctx);
	*provctx = NULL;
	return 0;
	}
	ossl_prov_ctx_set0_libctx(*provctx, libctx);
	ossl_prov_ctx_set0_handle(*provctx, handle);

	*out = legacy_dispatch_table;

	return 1;
	}

	#ifndef STATIC_LEGACY
	/*
	* Provider specific implementation of libcrypto functions in terms of
	* upcalls.
	*/

	/*
	* For ERR functions, we pass a NULL context. This is valid to do as long
	* as only error codes that the calling libcrypto supports are used.
	*/
	void ERR_new(void)
	{
	c_new_error(NULL);
	}

	void ERR_set_debug(const char file, int line, const char func)
	{
	c_set_error_debug(NULL, file, line, func);
	}

	void ERR_set_error(int lib, int reason, const char *fmt, ...)
	{
	va_list args;

	va_start(args, fmt);
	c_vset_error(NULL, ERR_PACK(lib, 0, reason), fmt, args);
	va_end(args);
	}

	void ERR_vset_error(int lib, int reason, const char *fmt, va_list args)
	{
	c_vset_error(NULL, ERR_PACK(lib, 0, reason), fmt, args);
	}

	int ERR_set_mark(void)
	{
	return c_set_error_mark(NULL);
	}

	int ERR_clear_last_mark(void)
	{
	return c_clear_last_error_mark(NULL);
	}

	int ERR_pop_to_mark(void)
	{
	return c_pop_error_to_mark(NULL);
	}
	#endif