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(X509_ATTRIBUTE)
21 DEFINE_STACK_OF(ASN1_TYPE)
23 int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
25 return sk_X509_ATTRIBUTE_num(x);
28 int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
31 const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
35 return X509at_get_attr_by_OBJ(x, obj, lastpos);
38 int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk,
39 const ASN1_OBJECT *obj, int lastpos)
49 n = sk_X509_ATTRIBUTE_num(sk);
50 for (; lastpos < n; lastpos++) {
51 ex = sk_X509_ATTRIBUTE_value(sk, lastpos);
52 if (OBJ_cmp(ex->object, obj) == 0)
58 X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
60 if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
63 return sk_X509_ATTRIBUTE_value(x, loc);
66 X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
70 if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
72 ret = sk_X509_ATTRIBUTE_delete(x, loc);
76 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
79 X509_ATTRIBUTE *new_attr = NULL;
80 STACK_OF(X509_ATTRIBUTE) *sk = NULL;
83 X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_PASSED_NULL_PARAMETER);
88 if ((sk = sk_X509_ATTRIBUTE_new_null()) == NULL)
93 if ((new_attr = X509_ATTRIBUTE_dup(attr)) == NULL)
95 if (!sk_X509_ATTRIBUTE_push(sk, new_attr))
101 X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_MALLOC_FAILURE);
103 X509_ATTRIBUTE_free(new_attr);
104 sk_X509_ATTRIBUTE_free(sk);
108 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE)
109 **x, const ASN1_OBJECT *obj,
111 const unsigned char *bytes,
114 X509_ATTRIBUTE *attr;
115 STACK_OF(X509_ATTRIBUTE) *ret;
116 attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
119 ret = X509at_add1_attr(x, attr);
120 X509_ATTRIBUTE_free(attr);
124 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE)
125 **x, int nid, int type,
126 const unsigned char *bytes,
129 X509_ATTRIBUTE *attr;
130 STACK_OF(X509_ATTRIBUTE) *ret;
131 attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len);
134 ret = X509at_add1_attr(x, attr);
135 X509_ATTRIBUTE_free(attr);
139 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE)
140 **x, const char *attrname,
142 const unsigned char *bytes,
145 X509_ATTRIBUTE *attr;
146 STACK_OF(X509_ATTRIBUTE) *ret;
147 attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
150 ret = X509at_add1_attr(x, attr);
151 X509_ATTRIBUTE_free(attr);
155 void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x,
156 const ASN1_OBJECT *obj, int lastpos, int type)
160 i = X509at_get_attr_by_OBJ(x, obj, lastpos);
163 if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1))
165 at = X509at_get_attr(x, i);
166 if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1))
168 return X509_ATTRIBUTE_get0_data(at, 0, type, NULL);
171 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
172 int atrtype, const void *data,
178 obj = OBJ_nid2obj(nid);
180 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_NID, X509_R_UNKNOWN_NID);
183 ret = X509_ATTRIBUTE_create_by_OBJ(attr, obj, atrtype, data, len);
185 ASN1_OBJECT_free(obj);
189 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
190 const ASN1_OBJECT *obj,
191 int atrtype, const void *data,
196 if ((attr == NULL) || (*attr == NULL)) {
197 if ((ret = X509_ATTRIBUTE_new()) == NULL) {
198 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_OBJ,
199 ERR_R_MALLOC_FAILURE);
205 if (!X509_ATTRIBUTE_set1_object(ret, obj))
207 if (!X509_ATTRIBUTE_set1_data(ret, atrtype, data, len))
210 if ((attr != NULL) && (*attr == NULL))
214 if ((attr == NULL) || (ret != *attr))
215 X509_ATTRIBUTE_free(ret);
219 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
220 const char *atrname, int type,
221 const unsigned char *bytes,
225 X509_ATTRIBUTE *nattr;
227 obj = OBJ_txt2obj(atrname, 0);
229 X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_TXT,
230 X509_R_INVALID_FIELD_NAME);
231 ERR_add_error_data(2, "name=", atrname);
234 nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len);
235 ASN1_OBJECT_free(obj);
239 int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
241 if ((attr == NULL) || (obj == NULL))
243 ASN1_OBJECT_free(attr->object);
244 attr->object = OBJ_dup(obj);
245 return attr->object != NULL;
248 int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype,
249 const void *data, int len)
251 ASN1_TYPE *ttmp = NULL;
252 ASN1_STRING *stmp = NULL;
256 if (attrtype & MBSTRING_FLAG) {
257 stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
258 OBJ_obj2nid(attr->object));
260 X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_ASN1_LIB);
264 } else if (len != -1) {
265 if ((stmp = ASN1_STRING_type_new(attrtype)) == NULL)
267 if (!ASN1_STRING_set(stmp, data, len))
272 * This is a bit naughty because the attribute should really have at
273 * least one value but some types use and zero length SET and require
277 ASN1_STRING_free(stmp);
280 if ((ttmp = ASN1_TYPE_new()) == NULL)
282 if ((len == -1) && !(attrtype & MBSTRING_FLAG)) {
283 if (!ASN1_TYPE_set1(ttmp, attrtype, data))
286 ASN1_TYPE_set(ttmp, atype, stmp);
289 if (!sk_ASN1_TYPE_push(attr->set, ttmp))
293 X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_MALLOC_FAILURE);
294 ASN1_TYPE_free(ttmp);
295 ASN1_STRING_free(stmp);
299 int X509_ATTRIBUTE_count(const X509_ATTRIBUTE *attr)
303 return sk_ASN1_TYPE_num(attr->set);
306 ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
313 void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
314 int atrtype, void *data)
317 ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
320 if (atrtype == V_ASN1_BOOLEAN
321 || atrtype == V_ASN1_NULL
322 || atrtype != ASN1_TYPE_get(ttmp)) {
323 X509err(X509_F_X509_ATTRIBUTE_GET0_DATA, X509_R_WRONG_TYPE);
326 return ttmp->value.ptr;
329 ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
333 return sk_ASN1_TYPE_value(attr->set, idx);