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1 /* crypto/x509/x509_v3.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 
X509v3_get_ext_count(const STACK_OF (X509_EXTENSION)* x)68 int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x)
69 	{
70 	if (x == NULL) return(0);
71 	return(sk_X509_EXTENSION_num(x));
72 	}
73 
X509v3_get_ext_by_NID(const STACK_OF (X509_EXTENSION)* x,int nid,int lastpos)74 int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *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(X509v3_get_ext_by_OBJ(x,obj,lastpos));
82 	}
83 
X509v3_get_ext_by_OBJ(const STACK_OF (X509_EXTENSION)* sk,ASN1_OBJECT * obj,int lastpos)84 int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk, ASN1_OBJECT *obj,
85 			  int lastpos)
86 	{
87 	int n;
88 	X509_EXTENSION *ex;
89 
90 	if (sk == NULL) return(-1);
91 	lastpos++;
92 	if (lastpos < 0)
93 		lastpos=0;
94 	n=sk_X509_EXTENSION_num(sk);
95 	for ( ; lastpos < n; lastpos++)
96 		{
97 		ex=sk_X509_EXTENSION_value(sk,lastpos);
98 		if (OBJ_cmp(ex->object,obj) == 0)
99 			return(lastpos);
100 		}
101 	return(-1);
102 	}
103 
X509v3_get_ext_by_critical(const STACK_OF (X509_EXTENSION)* sk,int crit,int lastpos)104 int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit,
105 			       int lastpos)
106 	{
107 	int n;
108 	X509_EXTENSION *ex;
109 
110 	if (sk == NULL) return(-1);
111 	lastpos++;
112 	if (lastpos < 0)
113 		lastpos=0;
114 	n=sk_X509_EXTENSION_num(sk);
115 	for ( ; lastpos < n; lastpos++)
116 		{
117 		ex=sk_X509_EXTENSION_value(sk,lastpos);
118 		if (	((ex->critical > 0) && crit) ||
119 			((ex->critical <= 0) && !crit))
120 			return(lastpos);
121 		}
122 	return(-1);
123 	}
124 
X509v3_get_ext(const STACK_OF (X509_EXTENSION)* x,int loc)125 X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc)
126 	{
127 	if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0)
128 		return NULL;
129 	else
130 		return sk_X509_EXTENSION_value(x,loc);
131 	}
132 
X509v3_delete_ext(STACK_OF (X509_EXTENSION)* x,int loc)133 X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc)
134 	{
135 	X509_EXTENSION *ret;
136 
137 	if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0)
138 		return(NULL);
139 	ret=sk_X509_EXTENSION_delete(x,loc);
140 	return(ret);
141 	}
142 
STACK_OF(X509_EXTENSION)143 STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
144 					 X509_EXTENSION *ex, int loc)
145 	{
146 	X509_EXTENSION *new_ex=NULL;
147 	int n;
148 	STACK_OF(X509_EXTENSION) *sk=NULL;
149 
150 	if (x == NULL)
151 		{
152 		X509err(X509_F_X509V3_ADD_EXT,ERR_R_PASSED_NULL_PARAMETER);
153 		goto err2;
154 		}
155 
156 	if (*x == NULL)
157 		{
158 		if ((sk=sk_X509_EXTENSION_new_null()) == NULL)
159 			goto err;
160 		}
161 	else
162 		sk= *x;
163 
164 	n=sk_X509_EXTENSION_num(sk);
165 	if (loc > n) loc=n;
166 	else if (loc < 0) loc=n;
167 
168 	if ((new_ex=X509_EXTENSION_dup(ex)) == NULL)
169 		goto err2;
170 	if (!sk_X509_EXTENSION_insert(sk,new_ex,loc))
171 		goto err;
172 	if (*x == NULL)
173 		*x=sk;
174 	return(sk);
175 err:
176 	X509err(X509_F_X509V3_ADD_EXT,ERR_R_MALLOC_FAILURE);
177 err2:
178 	if (new_ex != NULL) X509_EXTENSION_free(new_ex);
179 	if (sk != NULL) sk_X509_EXTENSION_free(sk);
180 	return(NULL);
181 	}
182 
X509_EXTENSION_create_by_NID(X509_EXTENSION ** ex,int nid,int crit,ASN1_OCTET_STRING * data)183 X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid,
184 	     int crit, ASN1_OCTET_STRING *data)
185 	{
186 	ASN1_OBJECT *obj;
187 	X509_EXTENSION *ret;
188 
189 	obj=OBJ_nid2obj(nid);
190 	if (obj == NULL)
191 		{
192 		X509err(X509_F_X509_EXTENSION_CREATE_BY_NID,X509_R_UNKNOWN_NID);
193 		return(NULL);
194 		}
195 	ret=X509_EXTENSION_create_by_OBJ(ex,obj,crit,data);
196 	if (ret == NULL) ASN1_OBJECT_free(obj);
197 	return(ret);
198 	}
199 
X509_EXTENSION_create_by_OBJ(X509_EXTENSION ** ex,ASN1_OBJECT * obj,int crit,ASN1_OCTET_STRING * data)200 X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
201 	     ASN1_OBJECT *obj, int crit, ASN1_OCTET_STRING *data)
202 	{
203 	X509_EXTENSION *ret;
204 
205 	if ((ex == NULL) || (*ex == NULL))
206 		{
207 		if ((ret=X509_EXTENSION_new()) == NULL)
208 			{
209 			X509err(X509_F_X509_EXTENSION_CREATE_BY_OBJ,ERR_R_MALLOC_FAILURE);
210 			return(NULL);
211 			}
212 		}
213 	else
214 		ret= *ex;
215 
216 	if (!X509_EXTENSION_set_object(ret,obj))
217 		goto err;
218 	if (!X509_EXTENSION_set_critical(ret,crit))
219 		goto err;
220 	if (!X509_EXTENSION_set_data(ret,data))
221 		goto err;
222 
223 	if ((ex != NULL) && (*ex == NULL)) *ex=ret;
224 	return(ret);
225 err:
226 	if ((ex == NULL) || (ret != *ex))
227 		X509_EXTENSION_free(ret);
228 	return(NULL);
229 	}
230 
X509_EXTENSION_set_object(X509_EXTENSION * ex,ASN1_OBJECT * obj)231 int X509_EXTENSION_set_object(X509_EXTENSION *ex, ASN1_OBJECT *obj)
232 	{
233 	if ((ex == NULL) || (obj == NULL))
234 		return(0);
235 	ASN1_OBJECT_free(ex->object);
236 	ex->object=OBJ_dup(obj);
237 	return(1);
238 	}
239 
X509_EXTENSION_set_critical(X509_EXTENSION * ex,int crit)240 int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit)
241 	{
242 	if (ex == NULL) return(0);
243 	ex->critical=(crit)?0xFF:-1;
244 	return(1);
245 	}
246 
X509_EXTENSION_set_data(X509_EXTENSION * ex,ASN1_OCTET_STRING * data)247 int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data)
248 	{
249 	int i;
250 
251 	if (ex == NULL) return(0);
252 	i=M_ASN1_OCTET_STRING_set(ex->value,data->data,data->length);
253 	if (!i) return(0);
254 	return(1);
255 	}
256 
X509_EXTENSION_get_object(X509_EXTENSION * ex)257 ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex)
258 	{
259 	if (ex == NULL) return(NULL);
260 	return(ex->object);
261 	}
262 
X509_EXTENSION_get_data(X509_EXTENSION * ex)263 ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex)
264 	{
265 	if (ex == NULL) return(NULL);
266 	return(ex->value);
267 	}
268 
X509_EXTENSION_get_critical(X509_EXTENSION * ex)269 int X509_EXTENSION_get_critical(X509_EXTENSION *ex)
270 	{
271 	if (ex == NULL) return(0);
272 	if(ex->critical > 0) return 1;
273 	return 0;
274 	}
275