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
65int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x)
66{
67 if (x == NULL)
68 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)
79 return (-2);
80 return (X509v3_get_ext_by_OBJ(x, obj, lastpos));
81}
82
83int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk,
84 const ASN1_OBJECT *obj, int lastpos)
85{
86 int n;
87 X509_EXTENSION *ex;
88
89 if (sk == NULL)
90 return (-1);
91 lastpos++;
92 if (lastpos < 0)
93 lastpos = 0;
94 n = sk_X509_EXTENSION_num(sk);
95 for (; lastpos < n; lastpos++) {
96 ex = sk_X509_EXTENSION_value(sk, lastpos);
97 if (OBJ_cmp(ex->object, obj) == 0)
98 return (lastpos);
99 }
100 return (-1);
101}
102
103int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit,
104 int lastpos)
105{
106 int n;
107 X509_EXTENSION *ex;
108
109 if (sk == NULL)
110 return (-1);
111 lastpos++;
112 if (lastpos < 0)
113 lastpos = 0;
114 n = sk_X509_EXTENSION_num(sk);
115 for (; lastpos < n; lastpos++) {
116 ex = sk_X509_EXTENSION_value(sk, lastpos);
117 if (((ex->critical > 0) && crit) || ((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 OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
150 goto err2;
151 }
152
153 if (*x == NULL) {
154 if ((sk = sk_X509_EXTENSION_new_null()) == NULL)
155 goto err;
156 } else
157 sk = *x;
158
159 n = sk_X509_EXTENSION_num(sk);
160 if (loc > n)
161 loc = n;
162 else if (loc < 0)
163 loc = n;
164
165 if ((new_ex = X509_EXTENSION_dup(ex)) == NULL)
166 goto err2;
167 if (!sk_X509_EXTENSION_insert(sk, new_ex, loc))
168 goto err;
169 if (*x == NULL)
170 *x = sk;
171 return (sk);
172 err:
173 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
174 err2:
175 if (new_ex != NULL)
176 X509_EXTENSION_free(new_ex);
177 if (sk != NULL)
178 sk_X509_EXTENSION_free(sk);
179 return (NULL);
180}
181
182X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid,
183 int crit,
184 ASN1_OCTET_STRING *data)
185{
186 const ASN1_OBJECT *obj;
187 X509_EXTENSION *ret;
188
189 obj = OBJ_nid2obj(nid);
190 if (obj == NULL) {
191 OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID);
192 return (NULL);
193 }
194 ret = X509_EXTENSION_create_by_OBJ(ex, obj, crit, data);
195 return (ret);
196}
197
198X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
199 const ASN1_OBJECT *obj, int crit,
200 ASN1_OCTET_STRING *data)
201{
202 X509_EXTENSION *ret;
203
204 if ((ex == NULL) || (*ex == NULL)) {
205 if ((ret = X509_EXTENSION_new()) == NULL) {
206 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
207 return (NULL);
208 }
209 } else
210 ret = *ex;
211
212 if (!X509_EXTENSION_set_object(ret, obj))
213 goto err;
214 if (!X509_EXTENSION_set_critical(ret, crit))
215 goto err;
216 if (!X509_EXTENSION_set_data(ret, data))
217 goto err;
218
219 if ((ex != NULL) && (*ex == NULL))
220 *ex = ret;
221 return (ret);
222 err:
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 ex->object != NULL;
235}
236
237int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit)
238{
239 if (ex == NULL)
240 return (0);
241 ex->critical = (crit) ? 0xFF : -1;
242 return (1);
243}
244
245int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data)
246{
247 int i;
248
249 if (ex == NULL)
250 return (0);
251 i = M_ASN1_OCTET_STRING_set(ex->value, data->data, data->length);
252 if (!i)
253 return (0);
254 return (1);
255}
256
257ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex)
258{
259 if (ex == NULL)
260 return (NULL);
261 return (ex->object);
262}
263
264ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex)
265{
266 if (ex == NULL)
267 return (NULL);
268 return (ex->value);
269}
270
271int X509_EXTENSION_get_critical(X509_EXTENSION *ex)
272{
273 if (ex == NULL)
274 return (0);
275 if (ex->critical > 0)
276 return 1;
277 return 0;
278}
279