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
68int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
69{
70	if (!x) return 0;
71	return(sk_X509_ATTRIBUTE_num(x));
72}
73
74int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
75			  int lastpos)
76{
77	ASN1_OBJECT *obj;
78
79	obj=OBJ_nid2obj(nid);
80	if (obj == NULL) return(-2);
81	return(X509at_get_attr_by_OBJ(x,obj,lastpos));
82}
83
84int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk, ASN1_OBJECT *obj,
85			  int lastpos)
86{
87	int n;
88	X509_ATTRIBUTE *ex;
89
90	if (sk == NULL) return(-1);
91	lastpos++;
92	if (lastpos < 0)
93		lastpos=0;
94	n=sk_X509_ATTRIBUTE_num(sk);
95	for ( ; lastpos < n; lastpos++)
96		{
97		ex=sk_X509_ATTRIBUTE_value(sk,lastpos);
98		if (OBJ_cmp(ex->object,obj) == 0)
99			return(lastpos);
100		}
101	return(-1);
102}
103
104X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
105{
106	if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
107		return NULL;
108	else
109		return sk_X509_ATTRIBUTE_value(x,loc);
110}
111
112X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
113{
114	X509_ATTRIBUTE *ret;
115
116	if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
117		return(NULL);
118	ret=sk_X509_ATTRIBUTE_delete(x,loc);
119	return(ret);
120}
121
122STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
123					 X509_ATTRIBUTE *attr)
124{
125	X509_ATTRIBUTE *new_attr=NULL;
126	STACK_OF(X509_ATTRIBUTE) *sk=NULL;
127
128	if (x == NULL)
129		{
130		X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_PASSED_NULL_PARAMETER);
131		goto err2;
132		}
133
134	if (*x == NULL)
135		{
136		if ((sk=sk_X509_ATTRIBUTE_new_null()) == NULL)
137			goto err;
138		}
139	else
140		sk= *x;
141
142	if ((new_attr=X509_ATTRIBUTE_dup(attr)) == NULL)
143		goto err2;
144	if (!sk_X509_ATTRIBUTE_push(sk,new_attr))
145		goto err;
146	if (*x == NULL)
147		*x=sk;
148	return(sk);
149err:
150	X509err(X509_F_X509AT_ADD1_ATTR,ERR_R_MALLOC_FAILURE);
151err2:
152	if (new_attr != NULL) X509_ATTRIBUTE_free(new_attr);
153	if (sk != NULL) sk_X509_ATTRIBUTE_free(sk);
154	return(NULL);
155}
156
157STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) **x,
158			const ASN1_OBJECT *obj, int type,
159			const unsigned char *bytes, int len)
160{
161	X509_ATTRIBUTE *attr;
162	STACK_OF(X509_ATTRIBUTE) *ret;
163	attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
164	if(!attr) return 0;
165	ret = X509at_add1_attr(x, attr);
166	X509_ATTRIBUTE_free(attr);
167	return ret;
168}
169
170STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE) **x,
171			int nid, int type,
172			const unsigned char *bytes, int len)
173{
174	X509_ATTRIBUTE *attr;
175	STACK_OF(X509_ATTRIBUTE) *ret;
176	attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len);
177	if(!attr) return 0;
178	ret = X509at_add1_attr(x, attr);
179	X509_ATTRIBUTE_free(attr);
180	return ret;
181}
182
183STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) **x,
184			const char *attrname, int type,
185			const unsigned char *bytes, int len)
186{
187	X509_ATTRIBUTE *attr;
188	STACK_OF(X509_ATTRIBUTE) *ret;
189	attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
190	if(!attr) return 0;
191	ret = X509at_add1_attr(x, attr);
192	X509_ATTRIBUTE_free(attr);
193	return ret;
194}
195
196X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
197	     int atrtype, const void *data, int len)
198{
199	ASN1_OBJECT *obj;
200	X509_ATTRIBUTE *ret;
201
202	obj=OBJ_nid2obj(nid);
203	if (obj == NULL)
204		{
205		X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_NID,X509_R_UNKNOWN_NID);
206		return(NULL);
207		}
208	ret=X509_ATTRIBUTE_create_by_OBJ(attr,obj,atrtype,data,len);
209	if (ret == NULL) ASN1_OBJECT_free(obj);
210	return(ret);
211}
212
213X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
214	     const ASN1_OBJECT *obj, int atrtype, const void *data, int len)
215{
216	X509_ATTRIBUTE *ret;
217
218	if ((attr == NULL) || (*attr == NULL))
219		{
220		if ((ret=X509_ATTRIBUTE_new()) == NULL)
221			{
222			X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_OBJ,ERR_R_MALLOC_FAILURE);
223			return(NULL);
224			}
225		}
226	else
227		ret= *attr;
228
229	if (!X509_ATTRIBUTE_set1_object(ret,obj))
230		goto err;
231	if (!X509_ATTRIBUTE_set1_data(ret,atrtype,data,len))
232		goto err;
233
234	if ((attr != NULL) && (*attr == NULL)) *attr=ret;
235	return(ret);
236err:
237	if ((attr == NULL) || (ret != *attr))
238		X509_ATTRIBUTE_free(ret);
239	return(NULL);
240}
241
242X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
243		const char *atrname, int type, const unsigned char *bytes, int len)
244	{
245	ASN1_OBJECT *obj;
246	X509_ATTRIBUTE *nattr;
247
248	obj=OBJ_txt2obj(atrname, 0);
249	if (obj == NULL)
250		{
251		X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_TXT,
252						X509_R_INVALID_FIELD_NAME);
253		ERR_add_error_data(2, "name=", atrname);
254		return(NULL);
255		}
256	nattr = X509_ATTRIBUTE_create_by_OBJ(attr,obj,type,bytes,len);
257	ASN1_OBJECT_free(obj);
258	return nattr;
259	}
260
261int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
262{
263	if ((attr == NULL) || (obj == NULL))
264		return(0);
265	ASN1_OBJECT_free(attr->object);
266	attr->object=OBJ_dup(obj);
267	return(1);
268}
269
270int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype, const void *data, int len)
271{
272	ASN1_TYPE *ttmp;
273	ASN1_STRING *stmp;
274	int atype;
275	if (!attr) return 0;
276	if(attrtype & MBSTRING_FLAG) {
277		stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
278						OBJ_obj2nid(attr->object));
279		if(!stmp) {
280			X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_ASN1_LIB);
281			return 0;
282		}
283		atype = stmp->type;
284	} else {
285		if(!(stmp = ASN1_STRING_type_new(attrtype))) goto err;
286		if(!ASN1_STRING_set(stmp, data, len)) goto err;
287		atype = attrtype;
288	}
289	if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err;
290	if(!(ttmp = ASN1_TYPE_new())) goto err;
291	if(!sk_ASN1_TYPE_push(attr->value.set, ttmp)) goto err;
292	attr->single = 0;
293	ASN1_TYPE_set(ttmp, atype, stmp);
294	return 1;
295	err:
296	X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_MALLOC_FAILURE);
297	return 0;
298}
299
300int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr)
301{
302	if(!attr->single) return sk_ASN1_TYPE_num(attr->value.set);
303	if(attr->value.single) return 1;
304	return 0;
305}
306
307ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
308{
309	if (attr == NULL) return(NULL);
310	return(attr->object);
311}
312
313void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
314					int atrtype, void *data)
315{
316	ASN1_TYPE *ttmp;
317	ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
318	if(!ttmp) return NULL;
319	if(atrtype != ASN1_TYPE_get(ttmp)){
320		X509err(X509_F_X509_ATTRIBUTE_GET0_DATA, X509_R_WRONG_TYPE);
321		return NULL;
322	}
323	return ttmp->value.ptr;
324}
325
326ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
327{
328	if (attr == NULL) return(NULL);
329	if(idx >= X509_ATTRIBUTE_count(attr)) return NULL;
330	if(!attr->single) return sk_ASN1_TYPE_value(attr->value.set, idx);
331	else return attr->value.single;
332}
333