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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/engine/eng_openssl.c	Lines:	0	61	0.0 %
Date:	2017-11-13	Branches:	0	40	0.0 %


/* $OpenBSD: eng_openssl.c,v 1.12 2015/12/07 03:30:09 bcook Exp $ */
/* 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.
 */

#include <stdio.h>
#include <string.h>

#include <openssl/opensslconf.h>

#include <openssl/crypto.h>
#include <openssl/dso.h>
#include <openssl/engine.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/pem.h>
#include <openssl/rand.h>

#ifndef OPENSSL_NO_DH
#include <openssl/dh.h>
#endif
#ifndef OPENSSL_NO_DSA
#include <openssl/dsa.h>
#endif
#ifndef OPENSSL_NO_RSA
#include <openssl/rsa.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_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 */
static const char *engine_openssl_id = "openssl";
static const char *engine_openssl_name = "Software engine support";

/* 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;
}

void
ENGINE_load_openssl(void)
{
	ENGINE *toadd = engine_openssl();

	if (!toadd)
		return;
	(void) 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
static int test_cipher_nids[] = {NID_rc4, NID_rc4_40};
static int test_cipher_nids_number = 2;

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, size_t 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>
static int test_digest_nids[] = {NID_sha1};
static int test_digest_nids_number = 1;

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


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: eng_openssl.c,v 1.12 2015/12/07 03:30:09 bcook Exp $ */
2			/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
3			* project 2000.
4			*/
5			/* ====================================================================
6			* Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			*
12			* 1. Redistributions of source code must retain the above copyright
13			* notice, this list of conditions and the following disclaimer.
14			*
15			* 2. Redistributions in binary form must reproduce the above copyright
16			* notice, this list of conditions and the following disclaimer in
17			* the documentation and/or other materials provided with the
18			* distribution.
19			*
20			* 3. All advertising materials mentioning features or use of this
21			* software must display the following acknowledgment:
22			* "This product includes software developed by the OpenSSL Project
23			* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24			*
25			* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26			* endorse or promote products derived from this software without
27			* prior written permission. For written permission, please contact
28			* licensing@OpenSSL.org.
29			*
30			* 5. Products derived from this software may not be called "OpenSSL"
31			* nor may "OpenSSL" appear in their names without prior written
32			* permission of the OpenSSL Project.
33			*
34			* 6. Redistributions of any form whatsoever must retain the following
35			* acknowledgment:
36			* "This product includes software developed by the OpenSSL Project
37			* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38			*
39			* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40			* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42			* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43			* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46			* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48			* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49			* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50			* OF THE POSSIBILITY OF SUCH DAMAGE.
51			* ====================================================================
52			*
53			* This product includes cryptographic software written by Eric Young
54			* (eay@cryptsoft.com). This product includes software written by Tim
55			* Hudson (tjh@cryptsoft.com).
56			*
57			*/
58			/* ====================================================================
59			* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
60			* ECDH support in OpenSSL originally developed by
61			* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
62			*/
63
64			#include <stdio.h>
65			#include <string.h>
66
67			#include <openssl/opensslconf.h>
68
69			#include <openssl/crypto.h>
70			#include <openssl/dso.h>
71			#include <openssl/engine.h>
72			#include <openssl/err.h>
73			#include <openssl/evp.h>
74			#include <openssl/pem.h>
75			#include <openssl/rand.h>
76
77			#ifndef OPENSSL_NO_DH
78			#include <openssl/dh.h>
79			#endif
80			#ifndef OPENSSL_NO_DSA
81			#include <openssl/dsa.h>
82			#endif
83			#ifndef OPENSSL_NO_RSA
84			#include <openssl/rsa.h>
85			#endif
86
87			/* This testing gunk is implemented (and explained) lower down. It also assumes
88			* the application explicitly calls "ENGINE_load_openssl()" because this is no
89			* longer automatic in ENGINE_load_builtin_engines(). */
90			#define TEST_ENG_OPENSSL_RC4
91			#define TEST_ENG_OPENSSL_PKEY
92			/* #define TEST_ENG_OPENSSL_RC4_OTHERS */
93			#define TEST_ENG_OPENSSL_RC4_P_INIT
94			/* #define TEST_ENG_OPENSSL_RC4_P_CIPHER */
95			#define TEST_ENG_OPENSSL_SHA
96			/* #define TEST_ENG_OPENSSL_SHA_OTHERS */
97			/* #define TEST_ENG_OPENSSL_SHA_P_INIT */
98			/* #define TEST_ENG_OPENSSL_SHA_P_UPDATE */
99			/* #define TEST_ENG_OPENSSL_SHA_P_FINAL */
100
101			/* Now check what of those algorithms are actually enabled */
102			#ifdef OPENSSL_NO_RC4
103			#undef TEST_ENG_OPENSSL_RC4
104			#undef TEST_ENG_OPENSSL_RC4_OTHERS
105			#undef TEST_ENG_OPENSSL_RC4_P_INIT
106			#undef TEST_ENG_OPENSSL_RC4_P_CIPHER
107			#endif
108			#if defined(OPENSSL_NO_SHA) \|\| defined(OPENSSL_NO_SHA1)
109			#undef TEST_ENG_OPENSSL_SHA
110			#undef TEST_ENG_OPENSSL_SHA_OTHERS
111			#undef TEST_ENG_OPENSSL_SHA_P_INIT
112			#undef TEST_ENG_OPENSSL_SHA_P_UPDATE
113			#undef TEST_ENG_OPENSSL_SHA_P_FINAL
114			#endif
115
116			#ifdef TEST_ENG_OPENSSL_RC4
117			static int openssl_ciphers(ENGINE e, const EVP_CIPHER *cipher,
118			const int **nids, int nid);
119			#endif
120			#ifdef TEST_ENG_OPENSSL_SHA
121			static int openssl_digests(ENGINE e, const EVP_MD *digest,
122			const int **nids, int nid);
123			#endif
124
125			#ifdef TEST_ENG_OPENSSL_PKEY
126			static EVP_PKEY openssl_load_privkey(ENGINE eng, const char *key_id,
127			UI_METHOD ui_method, void callback_data);
128			#endif
129
130			/* The constants used when creating the ENGINE */
131			static const char *engine_openssl_id = "openssl";
132			static const char *engine_openssl_name = "Software engine support";
133
134			/* This internal function is used by ENGINE_openssl() and possibly by the
135			* "dynamic" ENGINE support too */
136			static int
137			bind_helper(ENGINE *e)
138			{
139			if (!ENGINE_set_id(e, engine_openssl_id) \|\|
140			!ENGINE_set_name(e, engine_openssl_name)
141			#ifndef TEST_ENG_OPENSSL_NO_ALGORITHMS
142			#ifndef OPENSSL_NO_RSA
143			\|\| !ENGINE_set_RSA(e, RSA_get_default_method())
144			#endif
145			#ifndef OPENSSL_NO_DSA
146			\|\| !ENGINE_set_DSA(e, DSA_get_default_method())
147			#endif
148			#ifndef OPENSSL_NO_ECDH
149			\|\| !ENGINE_set_ECDH(e, ECDH_OpenSSL())
150			#endif
151			#ifndef OPENSSL_NO_ECDSA
152			\|\| !ENGINE_set_ECDSA(e, ECDSA_OpenSSL())
153			#endif
154			#ifndef OPENSSL_NO_DH
155			\|\| !ENGINE_set_DH(e, DH_get_default_method())
156			#endif
157			\|\| !ENGINE_set_RAND(e, RAND_SSLeay())
158			#ifdef TEST_ENG_OPENSSL_RC4
159			\|\| !ENGINE_set_ciphers(e, openssl_ciphers)
160			#endif
161			#ifdef TEST_ENG_OPENSSL_SHA
162			\|\| !ENGINE_set_digests(e, openssl_digests)
163			#endif
164			#endif
165			#ifdef TEST_ENG_OPENSSL_PKEY
166			\|\| !ENGINE_set_load_privkey_function(e, openssl_load_privkey)
167			#endif
168			)
169			return 0;
170			/* If we add errors to this ENGINE, ensure the error handling is setup here */
171			/* openssl_load_error_strings(); */
172			return 1;
173			}
174
175			static ENGINE *
176			engine_openssl(void)
177			{
178			ENGINE *ret = ENGINE_new();
179
180			if (!ret)
181			return NULL;
182			if (!bind_helper(ret)) {
183			ENGINE_free(ret);
184			return NULL;
185			}
186			return ret;
187			}
188
189			void
190			ENGINE_load_openssl(void)
191			{
192			ENGINE *toadd = engine_openssl();
193
194			if (!toadd)
195			return;
196			(void) ENGINE_add(toadd);
197			/* If the "add" worked, it gets a structural reference. So either way,
198			* we release our just-created reference. */
199			ENGINE_free(toadd);
200			ERR_clear_error();
201			}
202
203			/* This stuff is needed if this ENGINE is being compiled into a self-contained
204			* shared-library. */
205			#ifdef ENGINE_DYNAMIC_SUPPORT
206			static int
207			bind_fn(ENGINE e, const char id)
208			{
209			if (id && (strcmp(id, engine_openssl_id) != 0))
210			return 0;
211			if (!bind_helper(e))
212			return 0;
213			return 1;
214			}
215			IMPLEMENT_DYNAMIC_CHECK_FN()
216			IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
217			#endif /* ENGINE_DYNAMIC_SUPPORT */
218
219			#ifdef TEST_ENG_OPENSSL_RC4
220			/* This section of code compiles an "alternative implementation" of two modes of
221			* RC4 into this ENGINE. The result is that EVP_CIPHER operation for "rc4"
222			* should under normal circumstances go via this support rather than the default
223			* EVP support. There are other symbols to tweak the testing;
224			* TEST_ENC_OPENSSL_RC4_OTHERS - print a one line message to stderr each time
225			* we're asked for a cipher we don't support (should not happen).
226			* TEST_ENG_OPENSSL_RC4_P_INIT - print a one line message to stderr each time
227			* the "init_key" handler is called.
228			* TEST_ENG_OPENSSL_RC4_P_CIPHER - ditto for the "cipher" handler.
229			*/
230			#include <openssl/rc4.h>
231			#define TEST_RC4_KEY_SIZE 16
232			static int test_cipher_nids[] = {NID_rc4, NID_rc4_40};
233			static int test_cipher_nids_number = 2;
234
235			typedef struct {
236			unsigned char key[TEST_RC4_KEY_SIZE];
237			RC4_KEY ks;
238			} TEST_RC4_KEY;
239
240			#define test(ctx) ((TEST_RC4_KEY *)(ctx)->cipher_data)
241			static int
242			test_rc4_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
243			const unsigned char *iv, int enc)
244			{
245			#ifdef TEST_ENG_OPENSSL_RC4_P_INIT
246			fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_init_key() called\n");
247			#endif
248			memcpy(&test(ctx)->key[0], key, EVP_CIPHER_CTX_key_length(ctx));
249			RC4_set_key(&test(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx),
250			test(ctx)->key);
251			return 1;
252			}
253
254			static int
255			test_rc4_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
256			const unsigned char *in, size_t inl)
257			{
258			#ifdef TEST_ENG_OPENSSL_RC4_P_CIPHER
259			fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_cipher() called\n");
260			#endif
261			RC4(&test(ctx)->ks, inl, in, out);
262			return 1;
263			}
264
265			static const EVP_CIPHER test_r4_cipher = {
266			NID_rc4,
267			1, TEST_RC4_KEY_SIZE, 0,
268			EVP_CIPH_VARIABLE_LENGTH,
269			test_rc4_init_key,
270			test_rc4_cipher,
271			NULL,
272			sizeof(TEST_RC4_KEY),
273			NULL,
274			NULL,
275			NULL,
276			NULL
277			};
278
279			static const EVP_CIPHER test_r4_40_cipher = {
280			NID_rc4_40,
281			1,5 /* 40 bit */,0,
282			EVP_CIPH_VARIABLE_LENGTH,
283			test_rc4_init_key,
284			test_rc4_cipher,
285			NULL,
286			sizeof(TEST_RC4_KEY),
287			NULL,
288			NULL,
289			NULL,
290			NULL
291			};
292
293			static int
294			openssl_ciphers(ENGINE e, const EVP_CIPHER cipher, const int *nids, int nid)
295			{
296			if (!cipher) {
297			/* We are returning a list of supported nids */
298			*nids = test_cipher_nids;
299			return test_cipher_nids_number;
300			}
301			/* We are being asked for a specific cipher */
302			if (nid == NID_rc4)
303			*cipher = &test_r4_cipher;
304			else if (nid == NID_rc4_40)
305			*cipher = &test_r4_40_cipher;
306			else {
307			#ifdef TEST_ENG_OPENSSL_RC4_OTHERS
308			fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) returning NULL for "
309			"nid %d\n", nid);
310			#endif
311			*cipher = NULL;
312			return 0;
313			}
314			return 1;
315			}
316			#endif
317
318			#ifdef TEST_ENG_OPENSSL_SHA
319			/* Much the same sort of comment as for TEST_ENG_OPENSSL_RC4 */
320			#include <openssl/sha.h>
321			static int test_digest_nids[] = {NID_sha1};
322			static int test_digest_nids_number = 1;
323
324			static int
325			test_sha1_init(EVP_MD_CTX *ctx)
326			{
327			#ifdef TEST_ENG_OPENSSL_SHA_P_INIT
328			fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_init() called\n");
329			#endif
330			return SHA1_Init(ctx->md_data);
331			}
332
333			static int
334			test_sha1_update(EVP_MD_CTX ctx, const void data, size_t count)
335			{
336			#ifdef TEST_ENG_OPENSSL_SHA_P_UPDATE
337			fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_update() called\n");
338			#endif
339			return SHA1_Update(ctx->md_data, data, count);
340			}
341
342			static int
343			test_sha1_final(EVP_MD_CTX ctx, unsigned char md)
344			{
345			#ifdef TEST_ENG_OPENSSL_SHA_P_FINAL
346			fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_final() called\n");
347			#endif
348			return SHA1_Final(md, ctx->md_data);
349			}
350
351			static const EVP_MD test_sha_md = {
352			NID_sha1,
353			NID_sha1WithRSAEncryption,
354			SHA_DIGEST_LENGTH,
355			0,
356			test_sha1_init,
357			test_sha1_update,
358			test_sha1_final,
359			NULL,
360			NULL,
361			EVP_PKEY_RSA_method,
362			SHA_CBLOCK,
363			sizeof(EVP_MD *) + sizeof(SHA_CTX),
364			};
365
366			static int
367			openssl_digests(ENGINE e, const EVP_MD digest, const int *nids, int nid)
368			{
369			if (!digest) {
370			/* We are returning a list of supported nids */
371			*nids = test_digest_nids;
372			return test_digest_nids_number;
373			}
374			/* We are being asked for a specific digest */
375			if (nid == NID_sha1)
376			*digest = &test_sha_md;
377			else {
378			#ifdef TEST_ENG_OPENSSL_SHA_OTHERS
379			fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) returning NULL for "
380			"nid %d\n", nid);
381			#endif
382			*digest = NULL;
383			return 0;
384			}
385			return 1;
386			}
387			#endif
388
389			#ifdef TEST_ENG_OPENSSL_PKEY
390			static EVP_PKEY *
391			openssl_load_privkey(ENGINE eng, const char key_id, UI_METHOD *ui_method,
392			void *callback_data)
393			{
394			BIO *in;
395			EVP_PKEY *key;
396
397			fprintf(stderr, "(TEST_ENG_OPENSSL_PKEY)Loading Private key %s\n",
398			key_id);
399			in = BIO_new_file(key_id, "r");
400			if (!in)
401			return NULL;
402			key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL);
403			BIO_free(in);
404			return key;
405			}
406			#endif