Line data Source code
1 : /* crypto/x509/x509_att.c */
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 : #include <openssl/stack.h>
61 : #include "cryptlib.h"
62 : #include <openssl/asn1.h>
63 : #include <openssl/objects.h>
64 : #include <openssl/evp.h>
65 : #include <openssl/x509.h>
66 : #include <openssl/x509v3.h>
67 :
68 0 : int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
69 : {
70 0 : return sk_X509_ATTRIBUTE_num(x);
71 : }
72 :
73 0 : int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
74 : int lastpos)
75 : {
76 : ASN1_OBJECT *obj;
77 :
78 0 : obj = OBJ_nid2obj(nid);
79 0 : if (obj == NULL)
80 : return (-2);
81 0 : return (X509at_get_attr_by_OBJ(x, obj, lastpos));
82 : }
83 :
84 0 : int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk,
85 : ASN1_OBJECT *obj, int lastpos)
86 : {
87 : int n;
88 : X509_ATTRIBUTE *ex;
89 :
90 0 : if (sk == NULL)
91 : return (-1);
92 0 : lastpos++;
93 0 : if (lastpos < 0)
94 : lastpos = 0;
95 0 : n = sk_X509_ATTRIBUTE_num(sk);
96 0 : for (; lastpos < n; lastpos++) {
97 0 : ex = sk_X509_ATTRIBUTE_value(sk, lastpos);
98 0 : if (OBJ_cmp(ex->object, obj) == 0)
99 : return (lastpos);
100 : }
101 : return (-1);
102 : }
103 :
104 0 : X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
105 : {
106 0 : if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
107 : return NULL;
108 : else
109 0 : return sk_X509_ATTRIBUTE_value(x, loc);
110 : }
111 :
112 0 : X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
113 : {
114 : X509_ATTRIBUTE *ret;
115 :
116 0 : if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
117 : return (NULL);
118 0 : ret = sk_X509_ATTRIBUTE_delete(x, loc);
119 0 : return (ret);
120 : }
121 :
122 0 : STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
123 : X509_ATTRIBUTE *attr)
124 : {
125 : X509_ATTRIBUTE *new_attr = NULL;
126 : STACK_OF(X509_ATTRIBUTE) *sk = NULL;
127 :
128 0 : if (x == NULL) {
129 0 : X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_PASSED_NULL_PARAMETER);
130 0 : goto err2;
131 : }
132 :
133 0 : if (*x == NULL) {
134 0 : if ((sk = sk_X509_ATTRIBUTE_new_null()) == NULL)
135 : goto err;
136 : } else
137 : sk = *x;
138 :
139 0 : if ((new_attr = X509_ATTRIBUTE_dup(attr)) == NULL)
140 : goto err2;
141 0 : if (!sk_X509_ATTRIBUTE_push(sk, new_attr))
142 : goto err;
143 0 : if (*x == NULL)
144 0 : *x = sk;
145 0 : return (sk);
146 : err:
147 0 : X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_MALLOC_FAILURE);
148 : err2:
149 0 : if (new_attr != NULL)
150 0 : X509_ATTRIBUTE_free(new_attr);
151 0 : if (sk != NULL)
152 0 : sk_X509_ATTRIBUTE_free(sk);
153 : return (NULL);
154 : }
155 :
156 0 : STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE)
157 : **x, const ASN1_OBJECT *obj,
158 : int type,
159 : const unsigned char *bytes,
160 : int len)
161 : {
162 : X509_ATTRIBUTE *attr;
163 : STACK_OF(X509_ATTRIBUTE) *ret;
164 0 : attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
165 0 : if (!attr)
166 : return 0;
167 0 : ret = X509at_add1_attr(x, attr);
168 0 : X509_ATTRIBUTE_free(attr);
169 0 : return ret;
170 : }
171 :
172 0 : STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE)
173 : **x, int nid, int type,
174 : const unsigned char *bytes,
175 : int len)
176 : {
177 : X509_ATTRIBUTE *attr;
178 : STACK_OF(X509_ATTRIBUTE) *ret;
179 0 : attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len);
180 0 : if (!attr)
181 : return 0;
182 0 : ret = X509at_add1_attr(x, attr);
183 0 : X509_ATTRIBUTE_free(attr);
184 0 : return ret;
185 : }
186 :
187 0 : STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE)
188 : **x, const char *attrname,
189 : int type,
190 : const unsigned char *bytes,
191 : int len)
192 : {
193 : X509_ATTRIBUTE *attr;
194 : STACK_OF(X509_ATTRIBUTE) *ret;
195 0 : attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
196 0 : if (!attr)
197 : return 0;
198 0 : ret = X509at_add1_attr(x, attr);
199 0 : X509_ATTRIBUTE_free(attr);
200 0 : return ret;
201 : }
202 :
203 0 : void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x,
204 : ASN1_OBJECT *obj, int lastpos, int type)
205 : {
206 : int i;
207 : X509_ATTRIBUTE *at;
208 0 : i = X509at_get_attr_by_OBJ(x, obj, lastpos);
209 0 : if (i == -1)
210 : return NULL;
211 0 : if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1))
212 : return NULL;
213 0 : at = X509at_get_attr(x, i);
214 0 : if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1))
215 : return NULL;
216 0 : return X509_ATTRIBUTE_get0_data(at, 0, type, NULL);
217 : }
218 :
219 0 : X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
220 : int atrtype, const void *data,
221 : int len)
222 : {
223 : ASN1_OBJECT *obj;
224 : X509_ATTRIBUTE *ret;
225 :
226 0 : obj = OBJ_nid2obj(nid);
227 0 : if (obj == NULL) {
228 0 : X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_NID, X509_R_UNKNOWN_NID);
229 0 : return (NULL);
230 : }
231 0 : ret = X509_ATTRIBUTE_create_by_OBJ(attr, obj, atrtype, data, len);
232 0 : if (ret == NULL)
233 0 : ASN1_OBJECT_free(obj);
234 0 : return (ret);
235 : }
236 :
237 0 : X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
238 : const ASN1_OBJECT *obj,
239 : int atrtype, const void *data,
240 : int len)
241 : {
242 : X509_ATTRIBUTE *ret;
243 :
244 0 : if ((attr == NULL) || (*attr == NULL)) {
245 0 : if ((ret = X509_ATTRIBUTE_new()) == NULL) {
246 0 : X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_OBJ,
247 : ERR_R_MALLOC_FAILURE);
248 0 : return (NULL);
249 : }
250 : } else
251 : ret = *attr;
252 :
253 0 : if (!X509_ATTRIBUTE_set1_object(ret, obj))
254 : goto err;
255 0 : if (!X509_ATTRIBUTE_set1_data(ret, atrtype, data, len))
256 : goto err;
257 :
258 0 : if ((attr != NULL) && (*attr == NULL))
259 0 : *attr = ret;
260 0 : return (ret);
261 : err:
262 0 : if ((attr == NULL) || (ret != *attr))
263 0 : X509_ATTRIBUTE_free(ret);
264 : return (NULL);
265 : }
266 :
267 0 : X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
268 : const char *atrname, int type,
269 : const unsigned char *bytes,
270 : int len)
271 : {
272 : ASN1_OBJECT *obj;
273 : X509_ATTRIBUTE *nattr;
274 :
275 0 : obj = OBJ_txt2obj(atrname, 0);
276 0 : if (obj == NULL) {
277 0 : X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_TXT,
278 : X509_R_INVALID_FIELD_NAME);
279 0 : ERR_add_error_data(2, "name=", atrname);
280 0 : return (NULL);
281 : }
282 0 : nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len);
283 0 : ASN1_OBJECT_free(obj);
284 0 : return nattr;
285 : }
286 :
287 0 : int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
288 : {
289 0 : if ((attr == NULL) || (obj == NULL))
290 : return (0);
291 0 : ASN1_OBJECT_free(attr->object);
292 0 : attr->object = OBJ_dup(obj);
293 0 : return (1);
294 : }
295 :
296 0 : int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype,
297 : const void *data, int len)
298 : {
299 : ASN1_TYPE *ttmp;
300 : ASN1_STRING *stmp = NULL;
301 : int atype = 0;
302 0 : if (!attr)
303 : return 0;
304 0 : if (attrtype & MBSTRING_FLAG) {
305 0 : stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
306 0 : OBJ_obj2nid(attr->object));
307 0 : if (!stmp) {
308 0 : X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_ASN1_LIB);
309 0 : return 0;
310 : }
311 0 : atype = stmp->type;
312 0 : } else if (len != -1) {
313 0 : if (!(stmp = ASN1_STRING_type_new(attrtype)))
314 : goto err;
315 0 : if (!ASN1_STRING_set(stmp, data, len))
316 : goto err;
317 : atype = attrtype;
318 : }
319 0 : if (!(attr->value.set = sk_ASN1_TYPE_new_null()))
320 : goto err;
321 0 : attr->single = 0;
322 : /*
323 : * This is a bit naughty because the attribute should really have at
324 : * least one value but some types use and zero length SET and require
325 : * this.
326 : */
327 0 : if (attrtype == 0)
328 : return 1;
329 0 : if (!(ttmp = ASN1_TYPE_new()))
330 : goto err;
331 0 : if ((len == -1) && !(attrtype & MBSTRING_FLAG)) {
332 0 : if (!ASN1_TYPE_set1(ttmp, attrtype, data))
333 : goto err;
334 : } else
335 0 : ASN1_TYPE_set(ttmp, atype, stmp);
336 0 : if (!sk_ASN1_TYPE_push(attr->value.set, ttmp))
337 : goto err;
338 : return 1;
339 : err:
340 0 : X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_MALLOC_FAILURE);
341 0 : return 0;
342 : }
343 :
344 0 : int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr)
345 : {
346 0 : if (!attr->single)
347 0 : return sk_ASN1_TYPE_num(attr->value.set);
348 0 : if (attr->value.single)
349 : return 1;
350 0 : return 0;
351 : }
352 :
353 0 : ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
354 : {
355 0 : if (attr == NULL)
356 : return (NULL);
357 0 : return (attr->object);
358 : }
359 :
360 0 : void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
361 : int atrtype, void *data)
362 : {
363 : ASN1_TYPE *ttmp;
364 0 : ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
365 0 : if (!ttmp)
366 : return NULL;
367 0 : if (atrtype != ASN1_TYPE_get(ttmp)) {
368 0 : X509err(X509_F_X509_ATTRIBUTE_GET0_DATA, X509_R_WRONG_TYPE);
369 0 : return NULL;
370 : }
371 0 : return ttmp->value.ptr;
372 : }
373 :
374 0 : ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
375 : {
376 0 : if (attr == NULL)
377 : return (NULL);
378 0 : if (idx >= X509_ATTRIBUTE_count(attr))
379 : return NULL;
380 0 : if (!attr->single)
381 0 : return sk_ASN1_TYPE_value(attr->value.set, idx);
382 : else
383 0 : return attr->value.single;
384 : }
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