/* crypto/engine/eng_openssl.c */

 /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL

  * project 2000.

  */

 /* ====================================================================

  * Copyright (c) 1999-2001 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

  *    licensing@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).

  *

  */

 /* ====================================================================

  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.

  * ECDH support in OpenSSL originally developed by 

  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.

  */

  /*

  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

  */

 #include <stdio.h>

 #include <openssl/crypto.h>

 #include "cryptlib.h"

 #include <openssl/engine.h>

 #include <openssl/dso.h>

 #include <openssl/pem.h>

 #include <openssl/evp.h>

 #include <openssl/rand.h>

 #ifndef OPENSSL_NO_RSA

 #include <openssl/rsa.h>

 #endif

 #ifndef OPENSSL_NO_DSA

 #include <openssl/dsa.h>

 #endif

 #ifndef OPENSSL_NO_DH

 #include <openssl/dh.h>

 #endif

 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))

 #include "libcrypto_wsd_macros.h"

 #include "libcrypto_wsd.h"

 #endif

 /* This testing gunk is implemented (and explained) lower down. It also assumes

  * the application explicitly calls "ENGINE_load_openssl()" because this is no

  * longer automatic in ENGINE_load_builtin_engines(). */

 #define TEST_ENG_OPENSSL_RC4

 #define TEST_ENG_OPENSSL_PKEY

 /* #define TEST_ENG_OPENSSL_RC4_OTHERS */

 #define TEST_ENG_OPENSSL_RC4_P_INIT

 /* #define TEST_ENG_OPENSSL_RC4_P_CIPHER */

 #define TEST_ENG_OPENSSL_SHA

 /* #define TEST_ENG_OPENSSL_SHA_OTHERS */

 /* #define TEST_ENG_OPENSSL_SHA_P_INIT */

 /* #define TEST_ENG_OPENSSL_SHA_P_UPDATE */

 /* #define TEST_ENG_OPENSSL_SHA_P_FINAL */

 /* Now check what of those algorithms are actually enabled */

 #ifdef OPENSSL_NO_RC4

 #undef TEST_ENG_OPENSSL_RC4

 #undef TEST_ENG_OPENSSL_RC4_OTHERS

 #undef TEST_ENG_OPENSSL_RC4_P_INIT

 #undef TEST_ENG_OPENSSL_RC4_P_CIPHER

 #endif

 #if defined(OPENSSL_NO_SHA) || defined(OPENSSL_NO_SHA0) || defined(OPENSSL_NO_SHA1)

 #undef TEST_ENG_OPENSSL_SHA

 #undef TEST_ENG_OPENSSL_SHA_OTHERS

 #undef TEST_ENG_OPENSSL_SHA_P_INIT

 #undef TEST_ENG_OPENSSL_SHA_P_UPDATE

 #undef TEST_ENG_OPENSSL_SHA_P_FINAL 

 #endif

 #ifdef TEST_ENG_OPENSSL_RC4

 static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher,

 				const int **nids, int nid);

 #endif

 #ifdef TEST_ENG_OPENSSL_SHA

 static int openssl_digests(ENGINE *e, const EVP_MD **digest,

 				const int **nids, int nid);

 #endif

 #ifdef TEST_ENG_OPENSSL_PKEY

 static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id,

 	UI_METHOD *ui_method, void *callback_data);

 #endif

 /* The constants used when creating the ENGINE */

 #ifndef EMULATOR

 static const char *engine_openssl_id = "openssl";

 static const char *engine_openssl_name = "Software engine support";

 #else

 static const char *const engine_openssl_id = "openssl";

 static const char *const engine_openssl_name = "Software engine support";

 #endif

 /* This internal function is used by ENGINE_openssl() and possibly by the

  * "dynamic" ENGINE support too */

 static int bind_helper(ENGINE *e)

 	{

 	if(!ENGINE_set_id(e, engine_openssl_id)

 			|| !ENGINE_set_name(e, engine_openssl_name)

 #ifndef TEST_ENG_OPENSSL_NO_ALGORITHMS

 #ifndef OPENSSL_NO_RSA

 			|| !ENGINE_set_RSA(e, RSA_get_default_method())

 #endif

 #ifndef OPENSSL_NO_DSA

 			|| !ENGINE_set_DSA(e, DSA_get_default_method())

 #endif

 #ifndef OPENSSL_NO_ECDH

 			|| !ENGINE_set_ECDH(e, ECDH_OpenSSL())

 #endif

 #ifndef OPENSSL_NO_ECDSA

 			|| !ENGINE_set_ECDSA(e, ECDSA_OpenSSL())

 #endif

 #ifndef OPENSSL_NO_DH

 			|| !ENGINE_set_DH(e, DH_get_default_method())

 #endif

 			|| !ENGINE_set_RAND(e, RAND_SSLeay())

 #ifdef TEST_ENG_OPENSSL_RC4

 			|| !ENGINE_set_ciphers(e, openssl_ciphers)

 #endif

 #ifdef TEST_ENG_OPENSSL_SHA

 			|| !ENGINE_set_digests(e, openssl_digests)

 #endif

 #endif

 #ifdef TEST_ENG_OPENSSL_PKEY

 			|| !ENGINE_set_load_privkey_function(e, openssl_load_privkey)

 #endif

 			)

 		return 0;

 	/* If we add errors to this ENGINE, ensure the error handling is setup here */

 	/* openssl_load_error_strings(); */

 	return 1;

 	}

 static ENGINE *engine_openssl(void)

 	{

 	ENGINE *ret = ENGINE_new();

 	if(!ret)

 		return NULL;

 	if(!bind_helper(ret))

 		{

 		ENGINE_free(ret);

 		return NULL;

 		}

 	return ret;

 	}

 EXPORT_C void ENGINE_load_openssl(void)

 	{

 	ENGINE *toadd = engine_openssl();

 	if(!toadd) return;

 	ENGINE_add(toadd);

 	/* If the "add" worked, it gets a structural reference. So either way,

 	 * we release our just-created reference. */

 	ENGINE_free(toadd);

 	ERR_clear_error();

 	}

 /* This stuff is needed if this ENGINE is being compiled into a self-contained

  * shared-library. */

 #ifdef ENGINE_DYNAMIC_SUPPORT

 static int bind_fn(ENGINE *e, const char *id)

 	{

 	if(id && (strcmp(id, engine_openssl_id) != 0))

 		return 0;

 	if(!bind_helper(e))

 		return 0;

 	return 1;

 	}

 IMPLEMENT_DYNAMIC_CHECK_FN()

 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)

 #endif /* ENGINE_DYNAMIC_SUPPORT */

 #ifdef TEST_ENG_OPENSSL_RC4

 /* This section of code compiles an "alternative implementation" of two modes of

  * RC4 into this ENGINE. The result is that EVP_CIPHER operation for "rc4"

  * should under normal circumstances go via this support rather than the default

  * EVP support. There are other symbols to tweak the testing;

  *    TEST_ENC_OPENSSL_RC4_OTHERS - print a one line message to stderr each time

  *        we're asked for a cipher we don't support (should not happen).

  *    TEST_ENG_OPENSSL_RC4_P_INIT - print a one line message to stderr each time

  *        the "init_key" handler is called.

  *    TEST_ENG_OPENSSL_RC4_P_CIPHER - ditto for the "cipher" handler.

  */

 #include <openssl/rc4.h>

 #define TEST_RC4_KEY_SIZE		16

 #ifndef EMULATOR

 static int test_cipher_nids[] = {NID_rc4,NID_rc4_40};

 static int test_cipher_nids_number = 2;

 #else

 static const int test_cipher_nids[] = {NID_rc4,NID_rc4_40};

 static const int test_cipher_nids_number = 2;

 #endif

 typedef struct {

 	unsigned char key[TEST_RC4_KEY_SIZE];

 	RC4_KEY ks;

 	} TEST_RC4_KEY;

 #define test(ctx) ((TEST_RC4_KEY *)(ctx)->cipher_data)

 static int test_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,

 			const unsigned char *iv, int enc)

 	{

 #ifdef TEST_ENG_OPENSSL_RC4_P_INIT

 	fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_init_key() called\n");

 #endif

 	memcpy(&test(ctx)->key[0],key,EVP_CIPHER_CTX_key_length(ctx));

 	RC4_set_key(&test(ctx)->ks,EVP_CIPHER_CTX_key_length(ctx),

 		test(ctx)->key);

 	return 1;

 	}

 static int test_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,

 		      const unsigned char *in, unsigned int inl)

 	{

 #ifdef TEST_ENG_OPENSSL_RC4_P_CIPHER

 	fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_cipher() called\n");

 #endif

 	RC4(&test(ctx)->ks,inl,in,out);

 	return 1;

 	}

 static const EVP_CIPHER test_r4_cipher=

 	{

 	NID_rc4,

 	1,TEST_RC4_KEY_SIZE,0,

 	EVP_CIPH_VARIABLE_LENGTH,

 	test_rc4_init_key,

 	test_rc4_cipher,

 	NULL,

 	sizeof(TEST_RC4_KEY),

 	NULL,

 	NULL,

 	NULL,

 	NULL

 	};

 static const EVP_CIPHER test_r4_40_cipher=

 	{

 	NID_rc4_40,

 	1,5 /* 40 bit */,0,

 	EVP_CIPH_VARIABLE_LENGTH,

 	test_rc4_init_key,

 	test_rc4_cipher,

 	NULL,

 	sizeof(TEST_RC4_KEY),

 	NULL, 

 	NULL,

 	NULL,

 	NULL

 	};

 static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher,

 			const int **nids, int nid)

 	{

 	if(!cipher)

 		{

 		/* We are returning a list of supported nids */

 		*nids = test_cipher_nids;

 		return test_cipher_nids_number;

 		}

 	/* We are being asked for a specific cipher */

 	if(nid == NID_rc4)

 		*cipher = &test_r4_cipher;

 	else if(nid == NID_rc4_40)

 		*cipher = &test_r4_40_cipher;

 	else

 		{

 #ifdef TEST_ENG_OPENSSL_RC4_OTHERS

 		fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) returning NULL for "

 				"nid %d\n", nid);

 #endif

 		*cipher = NULL;

 		return 0;

 		}

 	return 1;

 	}

 #endif

 #ifdef TEST_ENG_OPENSSL_SHA

 /* Much the same sort of comment as for TEST_ENG_OPENSSL_RC4 */

 #include <openssl/sha.h>

 #ifndef EMULATOR

 static int test_digest_nids[] = {NID_sha1};

 static int test_digest_nids_number = 1;

 #else

 static const int test_digest_nids[] = {NID_sha1};

 static const int test_digest_nids_number = 1;

 #endif

 static int test_sha1_init(EVP_MD_CTX *ctx)

 	{

 #ifdef TEST_ENG_OPENSSL_SHA_P_INIT

 	fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_init() called\n");

 #endif

 	return SHA1_Init(ctx->md_data);

 	}

 static int test_sha1_update(EVP_MD_CTX *ctx,const void *data,size_t count)

 	{

 #ifdef TEST_ENG_OPENSSL_SHA_P_UPDATE

 	fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_update() called\n");

 #endif

 	return SHA1_Update(ctx->md_data,data,count);

 	}

 static int test_sha1_final(EVP_MD_CTX *ctx,unsigned char *md)

 	{

 #ifdef TEST_ENG_OPENSSL_SHA_P_FINAL

 	fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_final() called\n");

 #endif

 	return SHA1_Final(md,ctx->md_data);

 	}

 static const EVP_MD test_sha_md=

 	{

 	NID_sha1,

 	NID_sha1WithRSAEncryption,

 	SHA_DIGEST_LENGTH,

 	0,

 	test_sha1_init,

 	test_sha1_update,

 	test_sha1_final,

 	NULL,

 	NULL,

 	EVP_PKEY_RSA_method,

 	SHA_CBLOCK,

 	sizeof(EVP_MD *)+sizeof(SHA_CTX),

 	};

 static int openssl_digests(ENGINE *e, const EVP_MD **digest,

 			const int **nids, int nid)

 	{

 	if(!digest)

 		{

 		/* We are returning a list of supported nids */

 		*nids = test_digest_nids;

 		return test_digest_nids_number;

 		}

 	/* We are being asked for a specific digest */

 	if(nid == NID_sha1)

 		*digest = &test_sha_md;

 	else

 		{

 #ifdef TEST_ENG_OPENSSL_SHA_OTHERS

 		fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) returning NULL for "

 				"nid %d\n", nid);

 #endif

 		*digest = NULL;

 		return 0;

 		}

 	return 1;

 	}

 #endif

 #ifdef TEST_ENG_OPENSSL_PKEY

 static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id,

 	UI_METHOD *ui_method, void *callback_data)

 	{

 	BIO *in;

 	EVP_PKEY *key;

 	fprintf(stderr, "(TEST_ENG_OPENSSL_PKEY)Loading Private key %s\n", key_id);

 	in = BIO_new_file(key_id, "r");

 	if (!in)

 		return NULL;

 	key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL);

 	BIO_free(in);

 	return key;

 	}

 #endif