1 /* $OpenBSD: x509_att.c,v 1.17 2018/05/18 19:21:33 tb Exp $ */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
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>
70 X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE
) *x
)
72 return sk_X509_ATTRIBUTE_num(x
);
76 X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE
) *x
, int nid
, int lastpos
)
80 obj
= OBJ_nid2obj(nid
);
83 return (X509at_get_attr_by_OBJ(x
, obj
, lastpos
));
87 X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE
) *sk
,
88 const ASN1_OBJECT
*obj
, int lastpos
)
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)
108 X509at_get_attr(const STACK_OF(X509_ATTRIBUTE
) *x
, int loc
)
110 if (x
== NULL
|| sk_X509_ATTRIBUTE_num(x
) <= loc
|| loc
< 0)
113 return sk_X509_ATTRIBUTE_value(x
, loc
);
117 X509at_delete_attr(STACK_OF(X509_ATTRIBUTE
) *x
, int loc
)
121 if (x
== NULL
|| sk_X509_ATTRIBUTE_num(x
) <= loc
|| loc
< 0)
123 ret
= sk_X509_ATTRIBUTE_delete(x
, loc
);
127 STACK_OF(X509_ATTRIBUTE
) *
128 X509at_add1_attr(STACK_OF(X509_ATTRIBUTE
) **x
, X509_ATTRIBUTE
*attr
)
130 X509_ATTRIBUTE
*new_attr
= NULL
;
131 STACK_OF(X509_ATTRIBUTE
) *sk
= NULL
;
134 X509error(ERR_R_PASSED_NULL_PARAMETER
);
139 if ((sk
= sk_X509_ATTRIBUTE_new_null()) == NULL
)
144 if ((new_attr
= X509_ATTRIBUTE_dup(attr
)) == NULL
)
146 if (!sk_X509_ATTRIBUTE_push(sk
, new_attr
))
153 X509error(ERR_R_MALLOC_FAILURE
);
155 if (new_attr
!= NULL
)
156 X509_ATTRIBUTE_free(new_attr
);
157 if (sk
!= NULL
&& sk
!= *x
)
158 sk_X509_ATTRIBUTE_free(sk
);
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
)
166 X509_ATTRIBUTE
*attr
;
167 STACK_OF(X509_ATTRIBUTE
) *ret
;
169 attr
= X509_ATTRIBUTE_create_by_OBJ(NULL
, obj
, type
, bytes
, len
);
172 ret
= X509at_add1_attr(x
, attr
);
173 X509_ATTRIBUTE_free(attr
);
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
)
181 X509_ATTRIBUTE
*attr
;
182 STACK_OF(X509_ATTRIBUTE
) *ret
;
184 attr
= X509_ATTRIBUTE_create_by_NID(NULL
, nid
, type
, bytes
, len
);
187 ret
= X509at_add1_attr(x
, attr
);
188 X509_ATTRIBUTE_free(attr
);
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
)
196 X509_ATTRIBUTE
*attr
;
197 STACK_OF(X509_ATTRIBUTE
) *ret
;
199 attr
= X509_ATTRIBUTE_create_by_txt(NULL
, attrname
, type
, bytes
, len
);
202 ret
= X509at_add1_attr(x
, attr
);
203 X509_ATTRIBUTE_free(attr
);
208 X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE
) *x
, const ASN1_OBJECT
*obj
,
209 int lastpos
, int type
)
214 i
= X509at_get_attr_by_OBJ(x
, obj
, lastpos
);
217 if ((lastpos
<= -2) && (X509at_get_attr_by_OBJ(x
, obj
, i
) != -1))
219 at
= X509at_get_attr(x
, i
);
220 if (lastpos
<= -3 && (X509_ATTRIBUTE_count(at
) != 1))
222 return X509_ATTRIBUTE_get0_data(at
, 0, type
, NULL
);
226 X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE
**attr
, int nid
, int atrtype
,
227 const void *data
, int len
)
232 obj
= OBJ_nid2obj(nid
);
234 X509error(X509_R_UNKNOWN_NID
);
237 ret
= X509_ATTRIBUTE_create_by_OBJ(attr
, obj
, atrtype
, data
, len
);
239 ASN1_OBJECT_free(obj
);
244 X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE
**attr
, const ASN1_OBJECT
*obj
,
245 int atrtype
, const void *data
, int len
)
249 if ((attr
== NULL
) || (*attr
== NULL
)) {
250 if ((ret
= X509_ATTRIBUTE_new()) == NULL
) {
251 X509error(ERR_R_MALLOC_FAILURE
);
257 if (!X509_ATTRIBUTE_set1_object(ret
, obj
))
259 if (!X509_ATTRIBUTE_set1_data(ret
, atrtype
, data
, len
))
262 if ((attr
!= NULL
) && (*attr
== NULL
))
267 if ((attr
== NULL
) || (ret
!= *attr
))
268 X509_ATTRIBUTE_free(ret
);
273 X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE
**attr
, const char *atrname
,
274 int type
, const unsigned char *bytes
, int len
)
277 X509_ATTRIBUTE
*nattr
;
279 obj
= OBJ_txt2obj(atrname
, 0);
281 X509error(X509_R_INVALID_FIELD_NAME
);
282 ERR_asprintf_error_data("name=%s", atrname
);
285 nattr
= X509_ATTRIBUTE_create_by_OBJ(attr
, obj
, type
, bytes
, len
);
286 ASN1_OBJECT_free(obj
);
291 X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE
*attr
, const ASN1_OBJECT
*obj
)
293 if ((attr
== NULL
) || (obj
== NULL
))
295 ASN1_OBJECT_free(attr
->object
);
296 attr
->object
= OBJ_dup(obj
);
297 return attr
->object
!= NULL
;
301 X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE
*attr
, int attrtype
, const void *data
,
304 ASN1_TYPE
*ttmp
= NULL
;
305 ASN1_STRING
*stmp
= NULL
;
310 if (attrtype
& MBSTRING_FLAG
) {
311 stmp
= ASN1_STRING_set_by_NID(NULL
, data
, len
, attrtype
,
312 OBJ_obj2nid(attr
->object
));
314 X509error(ERR_R_ASN1_LIB
);
318 } else if (len
!= -1){
319 if (!(stmp
= ASN1_STRING_type_new(attrtype
)))
321 if (!ASN1_STRING_set(stmp
, data
, len
))
325 if (!(attr
->value
.set
= sk_ASN1_TYPE_new_null()))
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
333 ASN1_STRING_free(stmp
);
337 if (!(ttmp
= ASN1_TYPE_new()))
339 if ((len
== -1) && !(attrtype
& MBSTRING_FLAG
)) {
340 if (!ASN1_TYPE_set1(ttmp
, attrtype
, data
))
343 ASN1_TYPE_set(ttmp
, atype
, stmp
);
344 if (!sk_ASN1_TYPE_push(attr
->value
.set
, ttmp
))
349 ASN1_TYPE_free(ttmp
);
350 ASN1_STRING_free(stmp
);
351 X509error(ERR_R_MALLOC_FAILURE
);
356 X509_ATTRIBUTE_count(const X509_ATTRIBUTE
*attr
)
359 return sk_ASN1_TYPE_num(attr
->value
.set
);
360 if (attr
->value
.single
)
366 X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE
*attr
)
370 return (attr
->object
);
374 X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE
*attr
, int idx
, int atrtype
, void *data
)
378 ttmp
= X509_ATTRIBUTE_get0_type(attr
, idx
);
381 if (atrtype
!= ASN1_TYPE_get(ttmp
)){
382 X509error(X509_R_WRONG_TYPE
);
385 return ttmp
->value
.ptr
;
389 X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE
*attr
, int idx
)
393 if (idx
>= X509_ATTRIBUTE_count(attr
))
396 return sk_ASN1_TYPE_value(attr
->value
.set
, idx
);
398 return attr
->value
.single
;