GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/ocsp/ocsp_ext.c Lines: 38 133 28.6 %
Date: 2017-11-13 Branches: 9 90 10.0 %

Line Branch Exec Source
1
/* $OpenBSD: ocsp_ext.c,v 1.15 2016/12/27 16:01:19 jsing Exp $ */
2
/* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
3
 * project. */
4
5
/* History:
6
   This file was transfered to Richard Levitte from CertCo by Kathy
7
   Weinhold in mid-spring 2000 to be included in OpenSSL or released
8
   as a patch kit. */
9
10
/* ====================================================================
11
 * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
12
 *
13
 * Redistribution and use in source and binary forms, with or without
14
 * modification, are permitted provided that the following conditions
15
 * are met:
16
 *
17
 * 1. Redistributions of source code must retain the above copyright
18
 *    notice, this list of conditions and the following disclaimer.
19
 *
20
 * 2. Redistributions in binary form must reproduce the above copyright
21
 *    notice, this list of conditions and the following disclaimer in
22
 *    the documentation and/or other materials provided with the
23
 *    distribution.
24
 *
25
 * 3. All advertising materials mentioning features or use of this
26
 *    software must display the following acknowledgment:
27
 *    "This product includes software developed by the OpenSSL Project
28
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
29
 *
30
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
31
 *    endorse or promote products derived from this software without
32
 *    prior written permission. For written permission, please contact
33
 *    openssl-core@openssl.org.
34
 *
35
 * 5. Products derived from this software may not be called "OpenSSL"
36
 *    nor may "OpenSSL" appear in their names without prior written
37
 *    permission of the OpenSSL Project.
38
 *
39
 * 6. Redistributions of any form whatsoever must retain the following
40
 *    acknowledgment:
41
 *    "This product includes software developed by the OpenSSL Project
42
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
43
 *
44
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
45
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
46
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
47
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
48
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
49
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
50
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
51
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
53
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
54
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
55
 * OF THE POSSIBILITY OF SUCH DAMAGE.
56
 * ====================================================================
57
 *
58
 * This product includes cryptographic software written by Eric Young
59
 * (eay@cryptsoft.com).  This product includes software written by Tim
60
 * Hudson (tjh@cryptsoft.com).
61
 *
62
 */
63
64
#include <stdio.h>
65
#include <stdlib.h>
66
#include <string.h>
67
68
#include <openssl/objects.h>
69
#include <openssl/ocsp.h>
70
#include <openssl/x509.h>
71
#include <openssl/x509v3.h>
72
73
/* Standard wrapper functions for extensions */
74
75
/* OCSP request extensions */
76
77
int
78
OCSP_REQUEST_get_ext_count(OCSP_REQUEST *x)
79
{
80
	return X509v3_get_ext_count(x->tbsRequest->requestExtensions);
81
}
82
83
int
84
OCSP_REQUEST_get_ext_by_NID(OCSP_REQUEST *x, int nid, int lastpos)
85
{
86
16
	return X509v3_get_ext_by_NID(x->tbsRequest->requestExtensions, nid,
87
	    lastpos);
88
}
89
90
int
91
OCSP_REQUEST_get_ext_by_OBJ(OCSP_REQUEST *x, ASN1_OBJECT *obj, int lastpos)
92
{
93
	return X509v3_get_ext_by_OBJ(x->tbsRequest->requestExtensions, obj,
94
	    lastpos);
95
}
96
97
int
98
OCSP_REQUEST_get_ext_by_critical(OCSP_REQUEST *x, int crit, int lastpos)
99
{
100
	return X509v3_get_ext_by_critical(x->tbsRequest->requestExtensions,
101
	    crit, lastpos);
102
}
103
104
X509_EXTENSION *
105
OCSP_REQUEST_get_ext(OCSP_REQUEST *x, int loc)
106
{
107
16
	return X509v3_get_ext(x->tbsRequest->requestExtensions, loc);
108
}
109
110
X509_EXTENSION *
111
OCSP_REQUEST_delete_ext(OCSP_REQUEST *x, int loc)
112
{
113
	return X509v3_delete_ext(x->tbsRequest->requestExtensions, loc);
114
}
115
116
void *
117
OCSP_REQUEST_get1_ext_d2i(OCSP_REQUEST *x, int nid, int *crit, int *idx)
118
{
119
	return X509V3_get_d2i(x->tbsRequest->requestExtensions, nid, crit, idx);
120
}
121
122
int
123
OCSP_REQUEST_add1_ext_i2d(OCSP_REQUEST *x, int nid, void *value, int crit,
124
    unsigned long flags)
125
{
126
	return X509V3_add1_i2d(&x->tbsRequest->requestExtensions, nid, value,
127
	    crit, flags);
128
}
129
130
int
131
OCSP_REQUEST_add_ext(OCSP_REQUEST *x, X509_EXTENSION *ex, int loc)
132
{
133
	return X509v3_add_ext(&(x->tbsRequest->requestExtensions), ex,
134
	    loc) != NULL;
135
}
136
137
/* Single extensions */
138
139
int
140
OCSP_ONEREQ_get_ext_count(OCSP_ONEREQ *x)
141
{
142
	return X509v3_get_ext_count(x->singleRequestExtensions);
143
}
144
145
int
146
OCSP_ONEREQ_get_ext_by_NID(OCSP_ONEREQ *x, int nid, int lastpos)
147
{
148
	return X509v3_get_ext_by_NID(x->singleRequestExtensions, nid, lastpos);
149
}
150
151
int
152
OCSP_ONEREQ_get_ext_by_OBJ(OCSP_ONEREQ *x, ASN1_OBJECT *obj, int lastpos)
153
{
154
	return X509v3_get_ext_by_OBJ(x->singleRequestExtensions, obj, lastpos);
155
}
156
157
int
158
OCSP_ONEREQ_get_ext_by_critical(OCSP_ONEREQ *x, int crit, int lastpos)
159
{
160
	return X509v3_get_ext_by_critical(x->singleRequestExtensions, crit,
161
	    lastpos);
162
}
163
164
X509_EXTENSION *
165
OCSP_ONEREQ_get_ext(OCSP_ONEREQ *x, int loc)
166
{
167
	return X509v3_get_ext(x->singleRequestExtensions, loc);
168
}
169
170
X509_EXTENSION *
171
OCSP_ONEREQ_delete_ext(OCSP_ONEREQ *x, int loc)
172
{
173
	return X509v3_delete_ext(x->singleRequestExtensions, loc);
174
}
175
176
void *
177
OCSP_ONEREQ_get1_ext_d2i(OCSP_ONEREQ *x, int nid, int *crit, int *idx)
178
{
179
	return X509V3_get_d2i(x->singleRequestExtensions, nid, crit, idx);
180
}
181
182
int
183
OCSP_ONEREQ_add1_ext_i2d(OCSP_ONEREQ *x, int nid, void *value, int crit,
184
    unsigned long flags)
185
{
186
	return X509V3_add1_i2d(&x->singleRequestExtensions, nid, value, crit,
187
	    flags);
188
}
189
190
int
191
OCSP_ONEREQ_add_ext(OCSP_ONEREQ *x, X509_EXTENSION *ex, int loc)
192
{
193
	return X509v3_add_ext(&(x->singleRequestExtensions), ex, loc) != NULL;
194
}
195
196
/* OCSP Basic response */
197
198
int
199
OCSP_BASICRESP_get_ext_count(OCSP_BASICRESP *x)
200
{
201
	return X509v3_get_ext_count(x->tbsResponseData->responseExtensions);
202
}
203
204
int
205
OCSP_BASICRESP_get_ext_by_NID(OCSP_BASICRESP *x, int nid, int lastpos)
206
{
207
8
	return X509v3_get_ext_by_NID(x->tbsResponseData->responseExtensions,
208
	    nid, lastpos);
209
}
210
211
int
212
OCSP_BASICRESP_get_ext_by_OBJ(OCSP_BASICRESP *x, ASN1_OBJECT *obj, int lastpos)
213
{
214
	return X509v3_get_ext_by_OBJ(x->tbsResponseData->responseExtensions,
215
	    obj, lastpos);
216
}
217
218
int
219
OCSP_BASICRESP_get_ext_by_critical(OCSP_BASICRESP *x, int crit, int lastpos)
220
{
221
	return X509v3_get_ext_by_critical(
222
	    x->tbsResponseData->responseExtensions, crit, lastpos);
223
}
224
225
X509_EXTENSION *
226
OCSP_BASICRESP_get_ext(OCSP_BASICRESP *x, int loc)
227
{
228
8
	return X509v3_get_ext(x->tbsResponseData->responseExtensions, loc);
229
}
230
231
X509_EXTENSION *
232
OCSP_BASICRESP_delete_ext(OCSP_BASICRESP *x, int loc)
233
{
234
	return X509v3_delete_ext(x->tbsResponseData->responseExtensions, loc);
235
}
236
237
void *
238
OCSP_BASICRESP_get1_ext_d2i(OCSP_BASICRESP *x, int nid, int *crit, int *idx)
239
{
240
	return X509V3_get_d2i(x->tbsResponseData->responseExtensions, nid,
241
	    crit, idx);
242
}
243
244
int
245
OCSP_BASICRESP_add1_ext_i2d(OCSP_BASICRESP *x, int nid, void *value, int crit,
246
    unsigned long flags)
247
{
248
	return X509V3_add1_i2d(&x->tbsResponseData->responseExtensions, nid,
249
	    value, crit, flags);
250
}
251
252
int
253
OCSP_BASICRESP_add_ext(OCSP_BASICRESP *x, X509_EXTENSION *ex, int loc)
254
{
255
12
	return X509v3_add_ext(&(x->tbsResponseData->responseExtensions), ex,
256
4
	    loc) != NULL;
257
}
258
259
/* OCSP single response extensions */
260
261
int
262
OCSP_SINGLERESP_get_ext_count(OCSP_SINGLERESP *x)
263
{
264
	return X509v3_get_ext_count(x->singleExtensions);
265
}
266
267
int
268
OCSP_SINGLERESP_get_ext_by_NID(OCSP_SINGLERESP *x, int nid, int lastpos)
269
{
270
	return X509v3_get_ext_by_NID(x->singleExtensions, nid, lastpos);
271
}
272
273
int
274
OCSP_SINGLERESP_get_ext_by_OBJ(OCSP_SINGLERESP *x, ASN1_OBJECT *obj,
275
    int lastpos)
276
{
277
	return X509v3_get_ext_by_OBJ(x->singleExtensions, obj, lastpos);
278
}
279
280
int
281
OCSP_SINGLERESP_get_ext_by_critical(OCSP_SINGLERESP *x, int crit, int lastpos)
282
{
283
	return X509v3_get_ext_by_critical(x->singleExtensions, crit, lastpos);
284
}
285
286
X509_EXTENSION *
287
OCSP_SINGLERESP_get_ext(OCSP_SINGLERESP *x, int loc)
288
{
289
	return X509v3_get_ext(x->singleExtensions, loc);
290
}
291
292
X509_EXTENSION *
293
OCSP_SINGLERESP_delete_ext(OCSP_SINGLERESP *x, int loc)
294
{
295
	return X509v3_delete_ext(x->singleExtensions, loc);
296
}
297
298
void *
299
OCSP_SINGLERESP_get1_ext_d2i(OCSP_SINGLERESP *x, int nid, int *crit, int *idx)
300
{
301
	return X509V3_get_d2i(x->singleExtensions, nid, crit, idx);
302
}
303
304
int
305
OCSP_SINGLERESP_add1_ext_i2d(OCSP_SINGLERESP *x, int nid, void *value, int crit,
306
    unsigned long flags)
307
{
308
	return X509V3_add1_i2d(&x->singleExtensions, nid, value, crit, flags);
309
}
310
311
int
312
OCSP_SINGLERESP_add_ext(OCSP_SINGLERESP *x, X509_EXTENSION *ex, int loc)
313
{
314
	return X509v3_add_ext(&(x->singleExtensions), ex, loc) != NULL;
315
}
316
317
/* Nonce handling functions */
318
319
/* Add a nonce to an extension stack. A nonce can be specificed or if NULL
320
 * a random nonce will be generated.
321
 * Note: OpenSSL 0.9.7d and later create an OCTET STRING containing the
322
 * nonce, previous versions used the raw nonce.
323
 */
324
325
static int
326
ocsp_add1_nonce(STACK_OF(X509_EXTENSION) **exts, unsigned char *val, int len)
327
{
328
8
	unsigned char *tmpval;
329
4
	ASN1_OCTET_STRING os;
330
	int ret = 0;
331
332
4
	if (len <= 0)
333
4
		len = OCSP_DEFAULT_NONCE_LENGTH;
334
	/* Create the OCTET STRING manually by writing out the header and
335
	 * appending the content octets. This avoids an extra memory allocation
336
	 * operation in some cases. Applications should *NOT* do this because
337
	 * it relies on library internals.
338
	 */
339
4
	os.length = ASN1_object_size(0, len, V_ASN1_OCTET_STRING);
340
4
	os.data = malloc(os.length);
341
4
	if (os.data == NULL)
342
		goto err;
343
4
	tmpval = os.data;
344
4
	ASN1_put_object(&tmpval, 0, len, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL);
345
4
	if (val)
346
		memcpy(tmpval, val, len);
347
	else
348
4
		arc4random_buf(tmpval, len);
349
4
	if (!X509V3_add1_i2d(exts, NID_id_pkix_OCSP_Nonce, &os, 0,
350
	    X509V3_ADD_REPLACE))
351
		goto err;
352
4
	ret = 1;
353
354
err:
355
4
	free(os.data);
356
4
	return ret;
357
4
}
358
359
/* Add nonce to an OCSP request */
360
int
361
OCSP_request_add1_nonce(OCSP_REQUEST *req, unsigned char *val, int len)
362
{
363
8
	return ocsp_add1_nonce(&req->tbsRequest->requestExtensions, val, len);
364
}
365
366
/* Same as above but for a response */
367
int
368
OCSP_basic_add1_nonce(OCSP_BASICRESP *resp, unsigned char *val, int len)
369
{
370
	return ocsp_add1_nonce(&resp->tbsResponseData->responseExtensions, val,
371
	    len);
372
}
373
374
/* Check nonce validity in a request and response.
375
 * Return value reflects result:
376
 *  1: nonces present and equal.
377
 *  2: nonces both absent.
378
 *  3: nonce present in response only.
379
 *  0: nonces both present and not equal.
380
 * -1: nonce in request only.
381
 *
382
 *  For most responders clients can check return > 0.
383
 *  If responder doesn't handle nonces return != 0 may be
384
 *  necessary. return == 0 is always an error.
385
 */
386
int
387
OCSP_check_nonce(OCSP_REQUEST *req, OCSP_BASICRESP *bs)
388
{
389
	/*
390
	 * Since we are only interested in the presence or absence of
391
	 * the nonce and comparing its value there is no need to use
392
	 * the X509V3 routines: this way we can avoid them allocating an
393
	 * ASN1_OCTET_STRING structure for the value which would be
394
	 * freed immediately anyway.
395
	 */
396
	int req_idx, resp_idx;
397
	X509_EXTENSION *req_ext, *resp_ext;
398
399
8
	req_idx = OCSP_REQUEST_get_ext_by_NID(req, NID_id_pkix_OCSP_Nonce, -1);
400
4
	resp_idx = OCSP_BASICRESP_get_ext_by_NID(bs,
401
	    NID_id_pkix_OCSP_Nonce, -1);
402
	/* Check both absent */
403
4
	if (req_idx < 0 && resp_idx < 0)
404
		return 2;
405
	/* Check in request only */
406
4
	if (req_idx >= 0 && resp_idx < 0)
407
		return -1;
408
	/* Check in response but not request */
409
4
	if (req_idx < 0 && resp_idx >= 0)
410
		return 3;
411
	/* Otherwise nonce in request and response so retrieve the extensions */
412
4
	req_ext = OCSP_REQUEST_get_ext(req, req_idx);
413
4
	resp_ext = OCSP_BASICRESP_get_ext(bs, resp_idx);
414
4
	if (ASN1_OCTET_STRING_cmp(req_ext->value, resp_ext->value))
415
		return 0;
416
4
	return 1;
417
4
}
418
419
/* Copy the nonce value (if any) from an OCSP request to
420
 * a response.
421
 */
422
int
423
OCSP_copy_nonce(OCSP_BASICRESP *resp, OCSP_REQUEST *req)
424
{
425
	X509_EXTENSION *req_ext;
426
	int req_idx;
427
428
	/* Check for nonce in request */
429
8
	req_idx = OCSP_REQUEST_get_ext_by_NID(req, NID_id_pkix_OCSP_Nonce, -1);
430
	/* If no nonce that's OK */
431
4
	if (req_idx < 0)
432
		return 2;
433
4
	req_ext = OCSP_REQUEST_get_ext(req, req_idx);
434
4
	return OCSP_BASICRESP_add_ext(resp, req_ext, -1);
435
4
}
436
437
X509_EXTENSION *
438
OCSP_crlID_new(char *url, long *n, char *tim)
439
{
440
	X509_EXTENSION *x = NULL;
441
	OCSP_CRLID *cid = NULL;
442
443
	if (!(cid = OCSP_CRLID_new()))
444
		goto err;
445
	if (url) {
446
		if (!(cid->crlUrl = ASN1_IA5STRING_new()))
447
			goto err;
448
		if (!(ASN1_STRING_set(cid->crlUrl, url, -1)))
449
			goto err;
450
	}
451
	if (n) {
452
		if (!(cid->crlNum = ASN1_INTEGER_new()))
453
			goto err;
454
		if (!(ASN1_INTEGER_set(cid->crlNum, *n)))
455
			goto err;
456
	}
457
	if (tim) {
458
		if (!(cid->crlTime = ASN1_GENERALIZEDTIME_new()))
459
			goto err;
460
		if (!(ASN1_GENERALIZEDTIME_set_string(cid->crlTime, tim)))
461
			goto err;
462
	}
463
	x = X509V3_EXT_i2d(NID_id_pkix_OCSP_CrlID, 0, cid);
464
465
err:
466
	if (cid)
467
		OCSP_CRLID_free(cid);
468
	return x;
469
}
470
471
/*   AcceptableResponses ::= SEQUENCE OF OBJECT IDENTIFIER */
472
X509_EXTENSION *
473
OCSP_accept_responses_new(char **oids)
474
{
475
	int nid;
476
	STACK_OF(ASN1_OBJECT) *sk = NULL;
477
	ASN1_OBJECT *o = NULL;
478
	X509_EXTENSION *x = NULL;
479
480
	if (!(sk = sk_ASN1_OBJECT_new_null()))
481
		return NULL;
482
	while (oids && *oids) {
483
		if ((nid = OBJ_txt2nid(*oids)) != NID_undef &&
484
		    (o = OBJ_nid2obj(nid)))
485
			if (sk_ASN1_OBJECT_push(sk, o) == 0) {
486
				sk_ASN1_OBJECT_pop_free(sk, ASN1_OBJECT_free);
487
				return NULL;
488
			}
489
		oids++;
490
	}
491
	x = X509V3_EXT_i2d(NID_id_pkix_OCSP_acceptableResponses, 0, sk);
492
	sk_ASN1_OBJECT_pop_free(sk, ASN1_OBJECT_free);
493
	return x;
494
}
495
496
/*  ArchiveCutoff ::= GeneralizedTime */
497
X509_EXTENSION *
498
OCSP_archive_cutoff_new(char* tim)
499
{
500
	X509_EXTENSION *x = NULL;
501
	ASN1_GENERALIZEDTIME *gt = NULL;
502
503
	if (!(gt = ASN1_GENERALIZEDTIME_new()))
504
		return NULL;
505
	if (!(ASN1_GENERALIZEDTIME_set_string(gt, tim)))
506
		goto err;
507
	x = X509V3_EXT_i2d(NID_id_pkix_OCSP_archiveCutoff, 0, gt);
508
509
err:
510
	if (gt)
511
		ASN1_GENERALIZEDTIME_free(gt);
512
	return x;
513
}
514
515
/* per ACCESS_DESCRIPTION parameter are oids, of which there are currently
516
 * two--NID_ad_ocsp, NID_id_ad_caIssuers--and GeneralName value.  This
517
 * method forces NID_ad_ocsp and uniformResourceLocator [6] IA5String.
518
 */
519
X509_EXTENSION *
520
OCSP_url_svcloc_new(X509_NAME* issuer, char **urls)
521
{
522
	X509_EXTENSION *x = NULL;
523
	ASN1_IA5STRING *ia5 = NULL;
524
	OCSP_SERVICELOC *sloc = NULL;
525
	ACCESS_DESCRIPTION *ad = NULL;
526
527
	if (!(sloc = OCSP_SERVICELOC_new()))
528
		goto err;
529
	if (!(sloc->issuer = X509_NAME_dup(issuer)))
530
		goto err;
531
	if (urls && *urls &&
532
	    !(sloc->locator = sk_ACCESS_DESCRIPTION_new_null()))
533
		goto err;
534
	while (urls && *urls) {
535
		if (!(ad = ACCESS_DESCRIPTION_new()))
536
			goto err;
537
		if (!(ad->method = OBJ_nid2obj(NID_ad_OCSP)))
538
			goto err;
539
		if (!(ad->location = GENERAL_NAME_new()))
540
			goto err;
541
		if (!(ia5 = ASN1_IA5STRING_new()))
542
			goto err;
543
		if (!ASN1_STRING_set((ASN1_STRING*)ia5, *urls, -1))
544
			goto err;
545
		ad->location->type = GEN_URI;
546
		ad->location->d.ia5 = ia5;
547
		ia5 = NULL;
548
		if (!sk_ACCESS_DESCRIPTION_push(sloc->locator, ad))
549
			goto err;
550
		ad = NULL;
551
		urls++;
552
	}
553
	x = X509V3_EXT_i2d(NID_id_pkix_OCSP_serviceLocator, 0, sloc);
554
555
err:
556
	if (ia5)
557
		ASN1_IA5STRING_free(ia5);
558
	if (ad)
559
		ACCESS_DESCRIPTION_free(ad);
560
	if (sloc)
561
		OCSP_SERVICELOC_free(sloc);
562
	return x;
563
}