GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/x509/x509_att.c Lines: 59 156 37.8 %
Date: 2017-11-13 Branches: 29 118 24.6 %

Line Branch Exec Source
1
/* $OpenBSD: x509_att.c,v 1.15 2017/01/29 17:49:23 beck Exp $ */
2
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3
 * All rights reserved.
4
 *
5
 * This package is an SSL implementation written
6
 * by Eric Young (eay@cryptsoft.com).
7
 * The implementation was written so as to conform with Netscapes SSL.
8
 *
9
 * This library is free for commercial and non-commercial use as long as
10
 * the following conditions are aheared to.  The following conditions
11
 * apply to all code found in this distribution, be it the RC4, RSA,
12
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13
 * included with this distribution is covered by the same copyright terms
14
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15
 *
16
 * Copyright remains Eric Young's, and as such any Copyright notices in
17
 * the code are not to be removed.
18
 * If this package is used in a product, Eric Young should be given attribution
19
 * as the author of the parts of the library used.
20
 * This can be in the form of a textual message at program startup or
21
 * in documentation (online or textual) provided with the package.
22
 *
23
 * Redistribution and use in source and binary forms, with or without
24
 * modification, are permitted provided that the following conditions
25
 * are met:
26
 * 1. Redistributions of source code must retain the copyright
27
 *    notice, this list of conditions and the following disclaimer.
28
 * 2. Redistributions in binary form must reproduce the above copyright
29
 *    notice, this list of conditions and the following disclaimer in the
30
 *    documentation and/or other materials provided with the distribution.
31
 * 3. All advertising materials mentioning features or use of this software
32
 *    must display the following acknowledgement:
33
 *    "This product includes cryptographic software written by
34
 *     Eric Young (eay@cryptsoft.com)"
35
 *    The word 'cryptographic' can be left out if the rouines from the library
36
 *    being used are not cryptographic related :-).
37
 * 4. If you include any Windows specific code (or a derivative thereof) from
38
 *    the apps directory (application code) you must include an acknowledgement:
39
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40
 *
41
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51
 * SUCH DAMAGE.
52
 *
53
 * The licence and distribution terms for any publically available version or
54
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
55
 * copied and put under another distribution licence
56
 * [including the GNU Public Licence.]
57
 */
58
59
#include <stdio.h>
60
61
#include <openssl/asn1.h>
62
#include <openssl/err.h>
63
#include <openssl/evp.h>
64
#include <openssl/objects.h>
65
#include <openssl/stack.h>
66
#include <openssl/x509.h>
67
#include <openssl/x509v3.h>
68
69
int
70
X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
71
{
72
	return sk_X509_ATTRIBUTE_num(x);
73
}
74
75
int
76
X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid, int lastpos)
77
{
78
	ASN1_OBJECT *obj;
79
80
8
	obj = OBJ_nid2obj(nid);
81
4
	if (obj == NULL)
82
		return (-2);
83
4
	return (X509at_get_attr_by_OBJ(x, obj, lastpos));
84
4
}
85
86
int
87
X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk, ASN1_OBJECT *obj,
88
    int lastpos)
89
{
90
	int n;
91
	X509_ATTRIBUTE *ex;
92
93
8
	if (sk == NULL)
94
4
		return (-1);
95
	lastpos++;
96
	if (lastpos < 0)
97
		lastpos = 0;
98
	n = sk_X509_ATTRIBUTE_num(sk);
99
	for (; lastpos < n; lastpos++) {
100
		ex = sk_X509_ATTRIBUTE_value(sk, lastpos);
101
		if (OBJ_cmp(ex->object, obj) == 0)
102
			return (lastpos);
103
	}
104
	return (-1);
105
4
}
106
107
X509_ATTRIBUTE *
108
X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
109
{
110
	if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
111
		return NULL;
112
	else
113
		return sk_X509_ATTRIBUTE_value(x, loc);
114
}
115
116
X509_ATTRIBUTE *
117
X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
118
{
119
	X509_ATTRIBUTE *ret;
120
121
	if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
122
		return (NULL);
123
	ret = sk_X509_ATTRIBUTE_delete(x, loc);
124
	return (ret);
125
}
126
127
STACK_OF(X509_ATTRIBUTE) *
128
X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x, X509_ATTRIBUTE *attr)
129
{
130
	X509_ATTRIBUTE *new_attr = NULL;
131
	STACK_OF(X509_ATTRIBUTE) *sk = NULL;
132
133
12
	if (x == NULL) {
134
		X509error(ERR_R_PASSED_NULL_PARAMETER);
135
		return (NULL);
136
	}
137
138
6
	if (*x == NULL) {
139
6
		if ((sk = sk_X509_ATTRIBUTE_new_null()) == NULL)
140
			goto err;
141
	} else
142
		sk = *x;
143
144
6
	if ((new_attr = X509_ATTRIBUTE_dup(attr)) == NULL)
145
		goto err2;
146
6
	if (!sk_X509_ATTRIBUTE_push(sk, new_attr))
147
		goto err;
148
6
	if (*x == NULL)
149
6
		*x = sk;
150
6
	return (sk);
151
152
err:
153
	X509error(ERR_R_MALLOC_FAILURE);
154
err2:
155
	if (new_attr != NULL)
156
		X509_ATTRIBUTE_free(new_attr);
157
	if (sk != NULL && sk != *x)
158
		sk_X509_ATTRIBUTE_free(sk);
159
	return (NULL);
160
6
}
161
162
STACK_OF(X509_ATTRIBUTE) *
163
X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) **x, const ASN1_OBJECT *obj,
164
    int type, const unsigned char *bytes, int len)
165
{
166
	X509_ATTRIBUTE *attr;
167
	STACK_OF(X509_ATTRIBUTE) *ret;
168
169
	attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
170
	if (!attr)
171
		return 0;
172
	ret = X509at_add1_attr(x, attr);
173
	X509_ATTRIBUTE_free(attr);
174
	return ret;
175
}
176
177
STACK_OF(X509_ATTRIBUTE) *
178
X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE) **x, int nid, int type,
179
    const unsigned char *bytes, int len)
180
{
181
	X509_ATTRIBUTE *attr;
182
	STACK_OF(X509_ATTRIBUTE) *ret;
183
184
12
	attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len);
185
6
	if (!attr)
186
		return 0;
187
6
	ret = X509at_add1_attr(x, attr);
188
6
	X509_ATTRIBUTE_free(attr);
189
6
	return ret;
190
6
}
191
192
STACK_OF(X509_ATTRIBUTE) *
193
X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) **x, const char *attrname,
194
    int type, const unsigned char *bytes, int len)
195
{
196
	X509_ATTRIBUTE *attr;
197
	STACK_OF(X509_ATTRIBUTE) *ret;
198
199
	attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
200
	if (!attr)
201
		return 0;
202
	ret = X509at_add1_attr(x, attr);
203
	X509_ATTRIBUTE_free(attr);
204
	return ret;
205
}
206
207
void *
208
X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x, ASN1_OBJECT *obj,
209
    int lastpos, int type)
210
{
211
	int i;
212
	X509_ATTRIBUTE *at;
213
214
	i = X509at_get_attr_by_OBJ(x, obj, lastpos);
215
	if (i == -1)
216
		return NULL;
217
	if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1))
218
		return NULL;
219
	at = X509at_get_attr(x, i);
220
	if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1))
221
		return NULL;
222
	return X509_ATTRIBUTE_get0_data(at, 0, type, NULL);
223
}
224
225
X509_ATTRIBUTE *
226
X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid, int atrtype,
227
    const void *data, int len)
228
{
229
	ASN1_OBJECT *obj;
230
	X509_ATTRIBUTE *ret;
231
232
12
	obj = OBJ_nid2obj(nid);
233
6
	if (obj == NULL) {
234
		X509error(X509_R_UNKNOWN_NID);
235
		return (NULL);
236
	}
237
6
	ret = X509_ATTRIBUTE_create_by_OBJ(attr, obj, atrtype, data, len);
238
6
	if (ret == NULL)
239
		ASN1_OBJECT_free(obj);
240
6
	return (ret);
241
6
}
242
243
X509_ATTRIBUTE *
244
X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr, const ASN1_OBJECT *obj,
245
    int atrtype, const void *data, int len)
246
{
247
	X509_ATTRIBUTE *ret;
248
249

12
	if ((attr == NULL) || (*attr == NULL)) {
250
6
		if ((ret = X509_ATTRIBUTE_new()) == NULL) {
251
			X509error(ERR_R_MALLOC_FAILURE);
252
			return (NULL);
253
		}
254
	} else
255
		ret= *attr;
256
257
6
	if (!X509_ATTRIBUTE_set1_object(ret, obj))
258
		goto err;
259
6
	if (!X509_ATTRIBUTE_set1_data(ret, atrtype, data, len))
260
		goto err;
261
262

6
	if ((attr != NULL) && (*attr == NULL))
263
		*attr = ret;
264
6
	return (ret);
265
266
err:
267
	if ((attr == NULL) || (ret != *attr))
268
		X509_ATTRIBUTE_free(ret);
269
	return (NULL);
270
6
}
271
272
X509_ATTRIBUTE *
273
X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr, const char *atrname,
274
    int type, const unsigned char *bytes, int len)
275
{
276
	ASN1_OBJECT *obj;
277
	X509_ATTRIBUTE *nattr;
278
279
	obj = OBJ_txt2obj(atrname, 0);
280
	if (obj == NULL) {
281
		X509error(X509_R_INVALID_FIELD_NAME);
282
		ERR_asprintf_error_data("name=%s", atrname);
283
		return (NULL);
284
	}
285
	nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len);
286
	ASN1_OBJECT_free(obj);
287
	return nattr;
288
}
289
290
int
291
X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
292
{
293
12
	if ((attr == NULL) || (obj == NULL))
294
		return (0);
295
6
	ASN1_OBJECT_free(attr->object);
296
6
	attr->object = OBJ_dup(obj);
297
6
	return attr->object != NULL;
298
6
}
299
300
int
301
X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype, const void *data,
302
    int len)
303
{
304
	ASN1_TYPE *ttmp = NULL;
305
	ASN1_STRING *stmp = NULL;
306
	int atype = 0;
307
308
12
	if (!attr)
309
		return 0;
310
6
	if (attrtype & MBSTRING_FLAG) {
311
2
		stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
312
2
		    OBJ_obj2nid(attr->object));
313
2
		if (!stmp) {
314
			X509error(ERR_R_ASN1_LIB);
315
			return 0;
316
		}
317
2
		atype = stmp->type;
318
6
	} else if (len != -1){
319
4
		if (!(stmp = ASN1_STRING_type_new(attrtype)))
320
			goto err;
321
4
		if (!ASN1_STRING_set(stmp, data, len))
322
			goto err;
323
		atype = attrtype;
324
4
	}
325
6
	if (!(attr->value.set = sk_ASN1_TYPE_new_null()))
326
		goto err;
327
6
	attr->single = 0;
328
	/* This is a bit naughty because the attribute should really have
329
	 * at least one value but some types use and zero length SET and
330
	 * require this.
331
	 */
332
6
	if (attrtype == 0) {
333
		ASN1_STRING_free(stmp);
334
		return 1;
335
	}
336
337
6
	if (!(ttmp = ASN1_TYPE_new()))
338
		goto err;
339

6
	if ((len == -1) && !(attrtype & MBSTRING_FLAG)) {
340
		if (!ASN1_TYPE_set1(ttmp, attrtype, data))
341
			goto err;
342
	} else
343
6
		ASN1_TYPE_set(ttmp, atype, stmp);
344
6
	if (!sk_ASN1_TYPE_push(attr->value.set, ttmp))
345
		goto err;
346
6
	return 1;
347
348
err:
349
	ASN1_TYPE_free(ttmp);
350
	ASN1_STRING_free(stmp);
351
	X509error(ERR_R_MALLOC_FAILURE);
352
	return 0;
353
6
}
354
355
int
356
X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr)
357
{
358
	if (!attr->single)
359
		return sk_ASN1_TYPE_num(attr->value.set);
360
	if (attr->value.single)
361
		return 1;
362
	return 0;
363
}
364
365
ASN1_OBJECT *
366
X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
367
{
368
	if (attr == NULL)
369
		return (NULL);
370
	return (attr->object);
371
}
372
373
void *
374
X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx, int atrtype, void *data)
375
{
376
	ASN1_TYPE *ttmp;
377
378
	ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
379
	if (!ttmp)
380
		return NULL;
381
	if (atrtype != ASN1_TYPE_get(ttmp)){
382
		X509error(X509_R_WRONG_TYPE);
383
		return NULL;
384
	}
385
	return ttmp->value.ptr;
386
}
387
388
ASN1_TYPE *
389
X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
390
{
391
	if (attr == NULL)
392
		return (NULL);
393
	if (idx >= X509_ATTRIBUTE_count(attr))
394
		return NULL;
395
	if (!attr->single)
396
		return sk_ASN1_TYPE_value(attr->value.set, idx);
397
	else
398
		return attr->value.single;
399
}