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 %

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