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 #include <openssl/asn1.h>
59 #include <openssl/err.h>
60 #include <openssl/evp.h>
61 #include <openssl/obj.h>
62 #include <openssl/stack.h>
63 #include <openssl/x509.h>
64
65 #include "../asn1/internal.h"
66 #include "internal.h"
67
68
X509at_get_attr_count(const STACK_OF (X509_ATTRIBUTE)* x)69 int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
70 {
71 return sk_X509_ATTRIBUTE_num(x);
72 }
73
X509at_get_attr_by_NID(const STACK_OF (X509_ATTRIBUTE)* x,int nid,int lastpos)74 int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
75 int lastpos)
76 {
77 const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
78 if (obj == NULL) {
79 return -1;
80 }
81 return X509at_get_attr_by_OBJ(x, obj, lastpos);
82 }
83
X509at_get_attr_by_OBJ(const STACK_OF (X509_ATTRIBUTE)* sk,const ASN1_OBJECT * obj,int lastpos)84 int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk,
85 const ASN1_OBJECT *obj, int lastpos)
86 {
87 int n;
88 X509_ATTRIBUTE *ex;
89
90 if (sk == NULL)
91 return (-1);
92 lastpos++;
93 if (lastpos < 0)
94 lastpos = 0;
95 n = sk_X509_ATTRIBUTE_num(sk);
96 for (; lastpos < n; lastpos++) {
97 ex = sk_X509_ATTRIBUTE_value(sk, lastpos);
98 if (OBJ_cmp(ex->object, obj) == 0)
99 return (lastpos);
100 }
101 return (-1);
102 }
103
X509at_get_attr(const STACK_OF (X509_ATTRIBUTE)* x,int loc)104 X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
105 {
106 if (x == NULL || loc < 0 || sk_X509_ATTRIBUTE_num(x) <= (size_t)loc)
107 return NULL;
108 else
109 return sk_X509_ATTRIBUTE_value(x, loc);
110 }
111
X509at_delete_attr(STACK_OF (X509_ATTRIBUTE)* x,int loc)112 X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
113 {
114 X509_ATTRIBUTE *ret;
115
116 if (x == NULL || loc < 0 || sk_X509_ATTRIBUTE_num(x) <= (size_t)loc)
117 return (NULL);
118 ret = sk_X509_ATTRIBUTE_delete(x, loc);
119 return (ret);
120 }
121
STACK_OF(X509_ATTRIBUTE)122 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 if (x == NULL) {
129 OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
130 goto err2;
131 }
132
133 if (*x == NULL) {
134 if ((sk = sk_X509_ATTRIBUTE_new_null()) == NULL)
135 goto err;
136 } else
137 sk = *x;
138
139 if ((new_attr = X509_ATTRIBUTE_dup(attr)) == NULL)
140 goto err2;
141 if (!sk_X509_ATTRIBUTE_push(sk, new_attr))
142 goto err;
143 if (*x == NULL)
144 *x = sk;
145 return (sk);
146 err:
147 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
148 err2:
149 if (new_attr != NULL)
150 X509_ATTRIBUTE_free(new_attr);
151 if (sk != NULL)
152 sk_X509_ATTRIBUTE_free(sk);
153 return (NULL);
154 }
155
STACK_OF(X509_ATTRIBUTE)156 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 attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
165 if (!attr)
166 return 0;
167 ret = X509at_add1_attr(x, attr);
168 X509_ATTRIBUTE_free(attr);
169 return ret;
170 }
171
STACK_OF(X509_ATTRIBUTE)172 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 attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len);
180 if (!attr)
181 return 0;
182 ret = X509at_add1_attr(x, attr);
183 X509_ATTRIBUTE_free(attr);
184 return ret;
185 }
186
STACK_OF(X509_ATTRIBUTE)187 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 attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
196 if (!attr)
197 return 0;
198 ret = X509at_add1_attr(x, attr);
199 X509_ATTRIBUTE_free(attr);
200 return ret;
201 }
202
X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE ** attr,int nid,int attrtype,const void * data,int len)203 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
204 int attrtype, const void *data,
205 int len)
206 {
207 const ASN1_OBJECT *obj;
208
209 obj = OBJ_nid2obj(nid);
210 if (obj == NULL) {
211 OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID);
212 return (NULL);
213 }
214 return X509_ATTRIBUTE_create_by_OBJ(attr, obj, attrtype, data, len);
215 }
216
X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE ** attr,const ASN1_OBJECT * obj,int attrtype,const void * data,int len)217 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
218 const ASN1_OBJECT *obj,
219 int attrtype, const void *data,
220 int len)
221 {
222 X509_ATTRIBUTE *ret;
223
224 if ((attr == NULL) || (*attr == NULL)) {
225 if ((ret = X509_ATTRIBUTE_new()) == NULL) {
226 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
227 return (NULL);
228 }
229 } else
230 ret = *attr;
231
232 if (!X509_ATTRIBUTE_set1_object(ret, obj))
233 goto err;
234 if (!X509_ATTRIBUTE_set1_data(ret, attrtype, data, len))
235 goto err;
236
237 if ((attr != NULL) && (*attr == NULL))
238 *attr = ret;
239 return (ret);
240 err:
241 if ((attr == NULL) || (ret != *attr))
242 X509_ATTRIBUTE_free(ret);
243 return (NULL);
244 }
245
X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE ** attr,const char * attrname,int type,const unsigned char * bytes,int len)246 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
247 const char *attrname, int type,
248 const unsigned char *bytes,
249 int len)
250 {
251 ASN1_OBJECT *obj;
252 X509_ATTRIBUTE *nattr;
253
254 obj = OBJ_txt2obj(attrname, 0);
255 if (obj == NULL) {
256 OPENSSL_PUT_ERROR(X509, X509_R_INVALID_FIELD_NAME);
257 ERR_add_error_data(2, "name=", attrname);
258 return (NULL);
259 }
260 nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len);
261 ASN1_OBJECT_free(obj);
262 return nattr;
263 }
264
X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE * attr,const ASN1_OBJECT * obj)265 int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
266 {
267 if ((attr == NULL) || (obj == NULL))
268 return (0);
269 ASN1_OBJECT_free(attr->object);
270 attr->object = OBJ_dup(obj);
271 return attr->object != NULL;
272 }
273
X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE * attr,int attrtype,const void * data,int len)274 int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype,
275 const void *data, int len)
276 {
277 ASN1_TYPE *ttmp = NULL;
278 ASN1_STRING *stmp = NULL;
279 int atype = 0;
280 if (!attr)
281 return 0;
282 if (attrtype & MBSTRING_FLAG) {
283 stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
284 OBJ_obj2nid(attr->object));
285 if (!stmp) {
286 OPENSSL_PUT_ERROR(X509, ERR_R_ASN1_LIB);
287 return 0;
288 }
289 atype = stmp->type;
290 } else if (len != -1) {
291 if (!(stmp = ASN1_STRING_type_new(attrtype)))
292 goto err;
293 if (!ASN1_STRING_set(stmp, data, len))
294 goto err;
295 atype = attrtype;
296 }
297 /*
298 * This is a bit naughty because the attribute should really have at
299 * least one value but some types use and zero length SET and require
300 * this.
301 */
302 if (attrtype == 0) {
303 ASN1_STRING_free(stmp);
304 return 1;
305 }
306 if (!(ttmp = ASN1_TYPE_new()))
307 goto err;
308 if ((len == -1) && !(attrtype & MBSTRING_FLAG)) {
309 if (!ASN1_TYPE_set1(ttmp, attrtype, data))
310 goto err;
311 } else {
312 ASN1_TYPE_set(ttmp, atype, stmp);
313 stmp = NULL;
314 }
315 if (!sk_ASN1_TYPE_push(attr->set, ttmp))
316 goto err;
317 return 1;
318 err:
319 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
320 ASN1_TYPE_free(ttmp);
321 ASN1_STRING_free(stmp);
322 return 0;
323 }
324
X509_ATTRIBUTE_count(const X509_ATTRIBUTE * attr)325 int X509_ATTRIBUTE_count(const X509_ATTRIBUTE *attr)
326 {
327 return sk_ASN1_TYPE_num(attr->set);
328 }
329
X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE * attr)330 ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
331 {
332 if (attr == NULL)
333 return (NULL);
334 return (attr->object);
335 }
336
X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE * attr,int idx,int attrtype,void * unused)337 void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
338 int attrtype, void *unused)
339 {
340 ASN1_TYPE *ttmp;
341 ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
342 if (!ttmp)
343 return NULL;
344 if (attrtype != ASN1_TYPE_get(ttmp)) {
345 OPENSSL_PUT_ERROR(X509, X509_R_WRONG_TYPE);
346 return NULL;
347 }
348 return (void *)asn1_type_value_as_pointer(ttmp);
349 }
350
X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE * attr,int idx)351 ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
352 {
353 if (attr == NULL)
354 return NULL;
355 if (idx >= X509_ATTRIBUTE_count(attr))
356 return NULL;
357 return sk_ASN1_TYPE_value(attr->set, idx);
358 }
359