1/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to.  The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 *    notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 *    notice, this list of conditions and the following disclaimer in the
29 *    documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 *    must display the following acknowledgement:
32 *    "This product includes cryptographic software written by
33 *     Eric Young (eay@cryptsoft.com)"
34 *    The word 'cryptographic' can be left out if the rouines from the library
35 *    being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 *    the apps directory (application code) you must include an acknowledgement:
38 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed.  i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57#include <openssl/asn1.h>
58#include <openssl/err.h>
59#include <openssl/evp.h>
60#include <openssl/obj.h>
61#include <openssl/stack.h>
62#include <openssl/x509.h>
63#include <openssl/x509v3.h>
64
65
66int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x)
67	{
68	if (x == NULL) return(0);
69	return(sk_X509_EXTENSION_num(x));
70	}
71
72int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, int nid,
73			  int lastpos)
74	{
75	const ASN1_OBJECT *obj;
76
77	obj=OBJ_nid2obj(nid);
78	if (obj == NULL) return(-2);
79	return(X509v3_get_ext_by_OBJ(x,obj,lastpos));
80	}
81
82int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk, const ASN1_OBJECT *obj,
83			  int lastpos)
84	{
85	int n;
86	X509_EXTENSION *ex;
87
88	if (sk == NULL) return(-1);
89	lastpos++;
90	if (lastpos < 0)
91		lastpos=0;
92	n=sk_X509_EXTENSION_num(sk);
93	for ( ; lastpos < n; lastpos++)
94		{
95		ex=sk_X509_EXTENSION_value(sk,lastpos);
96		if (OBJ_cmp(ex->object,obj) == 0)
97			return(lastpos);
98		}
99	return(-1);
100	}
101
102int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit,
103			       int lastpos)
104	{
105	int n;
106	X509_EXTENSION *ex;
107
108	if (sk == NULL) return(-1);
109	lastpos++;
110	if (lastpos < 0)
111		lastpos=0;
112	n=sk_X509_EXTENSION_num(sk);
113	for ( ; lastpos < n; lastpos++)
114		{
115		ex=sk_X509_EXTENSION_value(sk,lastpos);
116		if (	((ex->critical > 0) && crit) ||
117			((ex->critical <= 0) && !crit))
118			return(lastpos);
119		}
120	return(-1);
121	}
122
123X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc)
124	{
125	if (x == NULL || loc < 0 || sk_X509_EXTENSION_num(x) <= (size_t) loc)
126		return NULL;
127	else
128		return sk_X509_EXTENSION_value(x,loc);
129	}
130
131X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc)
132	{
133	X509_EXTENSION *ret;
134
135	if (x == NULL || loc < 0 || sk_X509_EXTENSION_num(x) <= (size_t) loc)
136		return(NULL);
137	ret=sk_X509_EXTENSION_delete(x,loc);
138	return(ret);
139	}
140
141STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
142					 X509_EXTENSION *ex, int loc)
143	{
144	X509_EXTENSION *new_ex=NULL;
145	int n;
146	STACK_OF(X509_EXTENSION) *sk=NULL;
147
148	if (x == NULL)
149		{
150		OPENSSL_PUT_ERROR(X509, X509v3_add_ext, ERR_R_PASSED_NULL_PARAMETER);
151		goto err2;
152		}
153
154	if (*x == NULL)
155		{
156		if ((sk=sk_X509_EXTENSION_new_null()) == NULL)
157			goto err;
158		}
159	else
160		sk= *x;
161
162	n=sk_X509_EXTENSION_num(sk);
163	if (loc > n) loc=n;
164	else if (loc < 0) loc=n;
165
166	if ((new_ex=X509_EXTENSION_dup(ex)) == NULL)
167		goto err2;
168	if (!sk_X509_EXTENSION_insert(sk,new_ex,loc))
169		goto err;
170	if (*x == NULL)
171		*x=sk;
172	return(sk);
173err:
174	OPENSSL_PUT_ERROR(X509, X509v3_add_ext, ERR_R_MALLOC_FAILURE);
175err2:
176	if (new_ex != NULL) X509_EXTENSION_free(new_ex);
177	if (sk != NULL) sk_X509_EXTENSION_free(sk);
178	return(NULL);
179	}
180
181X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid,
182	     int crit, ASN1_OCTET_STRING *data)
183	{
184	const ASN1_OBJECT *obj;
185	X509_EXTENSION *ret;
186
187	obj=OBJ_nid2obj(nid);
188	if (obj == NULL)
189		{
190		OPENSSL_PUT_ERROR(X509, X509_EXTENSION_create_by_NID, X509_R_UNKNOWN_NID);
191		return(NULL);
192		}
193	ret=X509_EXTENSION_create_by_OBJ(ex,obj,crit,data);
194	return(ret);
195	}
196
197X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
198	     const ASN1_OBJECT *obj, int crit, ASN1_OCTET_STRING *data)
199	{
200	X509_EXTENSION *ret;
201
202	if ((ex == NULL) || (*ex == NULL))
203		{
204		if ((ret=X509_EXTENSION_new()) == NULL)
205			{
206			OPENSSL_PUT_ERROR(X509, X509_EXTENSION_create_by_OBJ, ERR_R_MALLOC_FAILURE);
207			return(NULL);
208			}
209		}
210	else
211		ret= *ex;
212
213	if (!X509_EXTENSION_set_object(ret,obj))
214		goto err;
215	if (!X509_EXTENSION_set_critical(ret,crit))
216		goto err;
217	if (!X509_EXTENSION_set_data(ret,data))
218		goto err;
219
220	if ((ex != NULL) && (*ex == NULL)) *ex=ret;
221	return(ret);
222err:
223	if ((ex == NULL) || (ret != *ex))
224		X509_EXTENSION_free(ret);
225	return(NULL);
226	}
227
228int X509_EXTENSION_set_object(X509_EXTENSION *ex, const ASN1_OBJECT *obj)
229	{
230	if ((ex == NULL) || (obj == NULL))
231		return(0);
232	ASN1_OBJECT_free(ex->object);
233	ex->object=OBJ_dup(obj);
234	return(1);
235	}
236
237int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit)
238	{
239	if (ex == NULL) return(0);
240	ex->critical=(crit)?0xFF:-1;
241	return(1);
242	}
243
244int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data)
245	{
246	int i;
247
248	if (ex == NULL) return(0);
249	i=M_ASN1_OCTET_STRING_set(ex->value,data->data,data->length);
250	if (!i) return(0);
251	return(1);
252	}
253
254ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex)
255	{
256	if (ex == NULL) return(NULL);
257	return(ex->object);
258	}
259
260ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex)
261	{
262	if (ex == NULL) return(NULL);
263	return(ex->value);
264	}
265
266int X509_EXTENSION_get_critical(X509_EXTENSION *ex)
267	{
268	if (ex == NULL) return(0);
269	if(ex->critical > 0) return 1;
270	return 0;
271	}
272