2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib.h"
12 #include <openssl/safestack.h>
13 #include <openssl/asn1.h>
14 #include <openssl/objects.h>
15 #include <openssl/evp.h>
16 #include <openssl/x509.h>
17 #include <openssl/x509v3.h>
18 #include "x509_local.h"
20 DEFINE_STACK_OF(ASN1_TYPE)
22 int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
24 return sk_X509_ATTRIBUTE_num(x);
27 int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
30 const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
34 return X509at_get_attr_by_OBJ(x, obj, lastpos);
37 int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk,
38 const ASN1_OBJECT *obj, int lastpos)
48 n = sk_X509_ATTRIBUTE_num(sk);
49 for (; lastpos < n; lastpos++) {
50 ex = sk_X509_ATTRIBUTE_value(sk, lastpos);
51 if (OBJ_cmp(ex->object, obj) == 0)
57 X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
59 if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
62 return sk_X509_ATTRIBUTE_value(x, loc);
65 X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
69 if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
71 ret = sk_X509_ATTRIBUTE_delete(x, loc);
75 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
78 X509_ATTRIBUTE *new_attr = NULL;
79 STACK_OF(X509_ATTRIBUTE) *sk = NULL;
82 X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_PASSED_NULL_PARAMETER);
87 if ((sk = sk_X509_ATTRIBUTE_new_null()) == NULL)
92 if ((new_attr = X509_ATTRIBUTE_dup(attr)) == NULL)
94 if (!sk_X509_ATTRIBUTE_push(sk, new_attr))
100 X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_MALLOC_FAILURE);
102 X509_ATTRIBUTE_free(new_attr);
103 sk_X509_ATTRIBUTE_free(sk);
107 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE)
108 **x, const ASN1_OBJECT *obj,
110 const unsigned char *bytes,
113 X509_ATTRIBUTE *attr;
114 STACK_OF(X509_ATTRIBUTE) *ret;
115 attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
118 ret = X509at_add1_attr(x, attr);
119 X509_ATTRIBUTE_free(attr);
123 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE)
124 **x, int nid, int type,
125 const unsigned char *bytes,
128 X509_ATTRIBUTE *attr;
129 STACK_OF(X509_ATTRIBUTE) *ret;
130 attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len);
133 ret = X509at_add1_attr(x, attr);
134 X509_ATTRIBUTE_free(attr);
138 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE)
139 **x, const char *attrname,
141 const unsigned char *bytes,
144 X509_ATTRIBUTE *attr;
145 STACK_OF(X509_ATTRIBUTE) *ret;
146 attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
149 ret = X509at_add1_attr(x, attr);
150 X509_ATTRIBUTE_free(attr);
154 void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x,
155 const ASN1_OBJECT *obj, int lastpos, int type)
159 i = X509at_get_attr_by_OBJ(x, obj, lastpos);
162 if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1))
164 at = X509at_get_attr(x, i);
165 if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1))
167 return X509_ATTRIBUTE_get0_data(at, 0, type, NULL);
170 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
171 int atrtype, const void *data,
177 obj = OBJ_nid2obj(nid);
179 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_NID, X509_R_UNKNOWN_NID);
182 ret = X509_ATTRIBUTE_create_by_OBJ(attr, obj, atrtype, data, len);
184 ASN1_OBJECT_free(obj);
188 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
189 const ASN1_OBJECT *obj,
190 int atrtype, const void *data,
195 if ((attr == NULL) || (*attr == NULL)) {
196 if ((ret = X509_ATTRIBUTE_new()) == NULL) {
197 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_OBJ,
198 ERR_R_MALLOC_FAILURE);
204 if (!X509_ATTRIBUTE_set1_object(ret, obj))
206 if (!X509_ATTRIBUTE_set1_data(ret, atrtype, data, len))
209 if ((attr != NULL) && (*attr == NULL))
213 if ((attr == NULL) || (ret != *attr))
214 X509_ATTRIBUTE_free(ret);
218 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
219 const char *atrname, int type,
220 const unsigned char *bytes,
224 X509_ATTRIBUTE *nattr;
226 obj = OBJ_txt2obj(atrname, 0);
228 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_TXT,
229 X509_R_INVALID_FIELD_NAME);
230 ERR_add_error_data(2, "name=", atrname);
233 nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len);
234 ASN1_OBJECT_free(obj);
238 int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
240 if ((attr == NULL) || (obj == NULL))
242 ASN1_OBJECT_free(attr->object);
243 attr->object = OBJ_dup(obj);
244 return attr->object != NULL;
247 int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype,
248 const void *data, int len)
250 ASN1_TYPE *ttmp = NULL;
251 ASN1_STRING *stmp = NULL;
255 if (attrtype & MBSTRING_FLAG) {
256 stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
257 OBJ_obj2nid(attr->object));
259 X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_ASN1_LIB);
263 } else if (len != -1) {
264 if ((stmp = ASN1_STRING_type_new(attrtype)) == NULL)
266 if (!ASN1_STRING_set(stmp, data, len))
271 * This is a bit naughty because the attribute should really have at
272 * least one value but some types use and zero length SET and require
276 ASN1_STRING_free(stmp);
279 if ((ttmp = ASN1_TYPE_new()) == NULL)
281 if ((len == -1) && !(attrtype & MBSTRING_FLAG)) {
282 if (!ASN1_TYPE_set1(ttmp, attrtype, data))
285 ASN1_TYPE_set(ttmp, atype, stmp);
288 if (!sk_ASN1_TYPE_push(attr->set, ttmp))
292 X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_MALLOC_FAILURE);
293 ASN1_TYPE_free(ttmp);
294 ASN1_STRING_free(stmp);
298 int X509_ATTRIBUTE_count(const X509_ATTRIBUTE *attr)
302 return sk_ASN1_TYPE_num(attr->set);
305 ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
312 void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
313 int atrtype, void *data)
316 ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
319 if (atrtype == V_ASN1_BOOLEAN
320 || atrtype == V_ASN1_NULL
321 || atrtype != ASN1_TYPE_get(ttmp)) {
322 X509err(X509_F_X509_ATTRIBUTE_GET0_DATA, X509_R_WRONG_TYPE);
325 return ttmp->value.ptr;
328 ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
332 return sk_ASN1_TYPE_value(attr->set, idx);