2 * Copyright 1995-2021 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 "crypto/x509.h"
19 #include "x509_local.h"
21 int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
23 return sk_X509_ATTRIBUTE_num(x);
26 int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
29 const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
33 return X509at_get_attr_by_OBJ(x, obj, lastpos);
36 int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk,
37 const ASN1_OBJECT *obj, int lastpos)
47 n = sk_X509_ATTRIBUTE_num(sk);
48 for (; lastpos < n; lastpos++) {
49 ex = sk_X509_ATTRIBUTE_value(sk, lastpos);
50 if (OBJ_cmp(ex->object, obj) == 0)
56 X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
58 if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
61 return sk_X509_ATTRIBUTE_value(x, loc);
64 X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
68 if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
70 ret = sk_X509_ATTRIBUTE_delete(x, loc);
74 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
77 X509_ATTRIBUTE *new_attr = NULL;
78 STACK_OF(X509_ATTRIBUTE) *sk = NULL;
81 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
86 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 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE);
102 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(const 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 STACK_OF(X509_ATTRIBUTE) *ossl_x509at_dup(const STACK_OF(X509_ATTRIBUTE) *x)
174 STACK_OF(X509_ATTRIBUTE) *sk = NULL;
176 n = sk_X509_ATTRIBUTE_num(x);
177 for (i = 0; i < n; ++i) {
178 X509_ATTRIBUTE *attr = sk_X509_ATTRIBUTE_value(x, i);
180 if (X509at_add1_attr(&sk, attr) == NULL) {
181 sk_X509_ATTRIBUTE_pop_free(sk, X509_ATTRIBUTE_free);
188 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
189 int atrtype, const void *data,
195 obj = OBJ_nid2obj(nid);
197 ERR_raise(ERR_LIB_X509, X509_R_UNKNOWN_NID);
200 ret = X509_ATTRIBUTE_create_by_OBJ(attr, obj, atrtype, data, len);
202 ASN1_OBJECT_free(obj);
206 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
207 const ASN1_OBJECT *obj,
208 int atrtype, const void *data,
213 if ((attr == NULL) || (*attr == NULL)) {
214 if ((ret = X509_ATTRIBUTE_new()) == NULL) {
215 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE);
221 if (!X509_ATTRIBUTE_set1_object(ret, obj))
223 if (!X509_ATTRIBUTE_set1_data(ret, atrtype, data, len))
226 if ((attr != NULL) && (*attr == NULL))
230 if ((attr == NULL) || (ret != *attr))
231 X509_ATTRIBUTE_free(ret);
235 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
236 const char *atrname, int type,
237 const unsigned char *bytes,
241 X509_ATTRIBUTE *nattr;
243 obj = OBJ_txt2obj(atrname, 0);
245 ERR_raise_data(ERR_LIB_X509, X509_R_INVALID_FIELD_NAME,
249 nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len);
250 ASN1_OBJECT_free(obj);
254 int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
256 if ((attr == NULL) || (obj == NULL))
258 ASN1_OBJECT_free(attr->object);
259 attr->object = OBJ_dup(obj);
260 return attr->object != NULL;
263 int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype,
264 const void *data, int len)
266 ASN1_TYPE *ttmp = NULL;
267 ASN1_STRING *stmp = NULL;
271 if (attrtype & MBSTRING_FLAG) {
272 stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
273 OBJ_obj2nid(attr->object));
275 ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
279 } else if (len != -1) {
280 if ((stmp = ASN1_STRING_type_new(attrtype)) == NULL)
282 if (!ASN1_STRING_set(stmp, data, len))
287 * This is a bit naughty because the attribute should really have at
288 * least one value but some types use and zero length SET and require
292 ASN1_STRING_free(stmp);
295 if ((ttmp = ASN1_TYPE_new()) == NULL)
297 if ((len == -1) && !(attrtype & MBSTRING_FLAG)) {
298 if (!ASN1_TYPE_set1(ttmp, attrtype, data))
301 ASN1_TYPE_set(ttmp, atype, stmp);
304 if (!sk_ASN1_TYPE_push(attr->set, ttmp))
308 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE);
309 ASN1_TYPE_free(ttmp);
310 ASN1_STRING_free(stmp);
314 int X509_ATTRIBUTE_count(const X509_ATTRIBUTE *attr)
318 return sk_ASN1_TYPE_num(attr->set);
321 ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
328 void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
329 int atrtype, void *data)
332 ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
335 if (atrtype == V_ASN1_BOOLEAN
336 || atrtype == V_ASN1_NULL
337 || atrtype != ASN1_TYPE_get(ttmp)) {
338 ERR_raise(ERR_LIB_X509, X509_R_WRONG_TYPE);
341 return ttmp->value.ptr;
344 ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
348 return sk_ASN1_TYPE_value(attr->set, idx);