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
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
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
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
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
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
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
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
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
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
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
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
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
257 ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex)
258 {
259 if (ex == NULL) return(NULL);
260 return(ex->object);
261 }
262
263 ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex)
264 {
265 if (ex == NULL) return(NULL);
266 return(ex->value);
267 }
268
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 }