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