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 #include "internal.h"
66
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)
71 return (0);
72 return (sk_X509_EXTENSION_num(x));
73 }
74
X509v3_get_ext_by_NID(const STACK_OF (X509_EXTENSION)* x,int nid,int lastpos)75 int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, int nid,
76 int lastpos)
77 {
78 const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
79 if (obj == NULL) {
80 return -1;
81 }
82 return X509v3_get_ext_by_OBJ(x, obj, lastpos);
83 }
84
X509v3_get_ext_by_OBJ(const STACK_OF (X509_EXTENSION)* sk,const ASN1_OBJECT * obj,int lastpos)85 int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk,
86 const ASN1_OBJECT *obj, int lastpos)
87 {
88 int n;
89 X509_EXTENSION *ex;
90
91 if (sk == NULL)
92 return (-1);
93 lastpos++;
94 if (lastpos < 0)
95 lastpos = 0;
96 n = sk_X509_EXTENSION_num(sk);
97 for (; lastpos < n; lastpos++) {
98 ex = sk_X509_EXTENSION_value(sk, lastpos);
99 if (OBJ_cmp(ex->object, obj) == 0)
100 return (lastpos);
101 }
102 return (-1);
103 }
104
X509v3_get_ext_by_critical(const STACK_OF (X509_EXTENSION)* sk,int crit,int lastpos)105 int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit,
106 int lastpos)
107 {
108 if (sk == NULL) {
109 return -1;
110 }
111
112 lastpos++;
113 if (lastpos < 0) {
114 lastpos = 0;
115 }
116
117 crit = !!crit;
118 int n = sk_X509_EXTENSION_num(sk);
119 for (; lastpos < n; lastpos++) {
120 const X509_EXTENSION *ex = sk_X509_EXTENSION_value(sk, lastpos);
121 if (X509_EXTENSION_get_critical(ex) == crit) {
122 return lastpos;
123 }
124 }
125 return -1;
126 }
127
X509v3_get_ext(const STACK_OF (X509_EXTENSION)* x,int loc)128 X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc)
129 {
130 if (x == NULL || loc < 0 || sk_X509_EXTENSION_num(x) <= (size_t)loc)
131 return NULL;
132 else
133 return sk_X509_EXTENSION_value(x, loc);
134 }
135
X509v3_delete_ext(STACK_OF (X509_EXTENSION)* x,int loc)136 X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc)
137 {
138 X509_EXTENSION *ret;
139
140 if (x == NULL || loc < 0 || sk_X509_EXTENSION_num(x) <= (size_t)loc)
141 return (NULL);
142 ret = sk_X509_EXTENSION_delete(x, loc);
143 return (ret);
144 }
145
STACK_OF(X509_EXTENSION)146 STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
147 X509_EXTENSION *ex, int loc)
148 {
149 X509_EXTENSION *new_ex = NULL;
150 int n;
151 STACK_OF(X509_EXTENSION) *sk = NULL;
152
153 if (x == NULL) {
154 OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
155 goto err2;
156 }
157
158 if (*x == NULL) {
159 if ((sk = sk_X509_EXTENSION_new_null()) == NULL)
160 goto err;
161 } else
162 sk = *x;
163
164 n = sk_X509_EXTENSION_num(sk);
165 if (loc > n)
166 loc = n;
167 else if (loc < 0)
168 loc = n;
169
170 if ((new_ex = X509_EXTENSION_dup(ex)) == NULL)
171 goto err2;
172 if (!sk_X509_EXTENSION_insert(sk, new_ex, loc))
173 goto err;
174 if (*x == NULL)
175 *x = sk;
176 return (sk);
177 err:
178 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
179 err2:
180 X509_EXTENSION_free(new_ex);
181 sk_X509_EXTENSION_free(sk);
182 return NULL;
183 }
184
X509_EXTENSION_create_by_NID(X509_EXTENSION ** ex,int nid,int crit,const ASN1_OCTET_STRING * data)185 X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid,
186 int crit,
187 const ASN1_OCTET_STRING *data)
188 {
189 const ASN1_OBJECT *obj;
190 X509_EXTENSION *ret;
191
192 obj = OBJ_nid2obj(nid);
193 if (obj == NULL) {
194 OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID);
195 return (NULL);
196 }
197 ret = X509_EXTENSION_create_by_OBJ(ex, obj, crit, data);
198 return (ret);
199 }
200
X509_EXTENSION_create_by_OBJ(X509_EXTENSION ** ex,const ASN1_OBJECT * obj,int crit,const ASN1_OCTET_STRING * data)201 X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
202 const ASN1_OBJECT *obj, int crit,
203 const ASN1_OCTET_STRING *data)
204 {
205 X509_EXTENSION *ret;
206
207 if ((ex == NULL) || (*ex == NULL)) {
208 if ((ret = X509_EXTENSION_new()) == NULL) {
209 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
210 return (NULL);
211 }
212 } else
213 ret = *ex;
214
215 if (!X509_EXTENSION_set_object(ret, obj))
216 goto err;
217 if (!X509_EXTENSION_set_critical(ret, crit))
218 goto err;
219 if (!X509_EXTENSION_set_data(ret, data))
220 goto err;
221
222 if ((ex != NULL) && (*ex == NULL))
223 *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,const ASN1_OBJECT * obj)231 int X509_EXTENSION_set_object(X509_EXTENSION *ex, const 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 ex->object != NULL;
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)
243 return (0);
244 ex->critical = (crit) ? 0xFF : -1;
245 return (1);
246 }
247
X509_EXTENSION_set_data(X509_EXTENSION * ex,const ASN1_OCTET_STRING * data)248 int X509_EXTENSION_set_data(X509_EXTENSION *ex, const ASN1_OCTET_STRING *data)
249 {
250 int i;
251
252 if (ex == NULL)
253 return (0);
254 i = ASN1_OCTET_STRING_set(ex->value, data->data, data->length);
255 if (!i)
256 return (0);
257 return (1);
258 }
259
X509_EXTENSION_get_object(X509_EXTENSION * ex)260 ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex)
261 {
262 if (ex == NULL)
263 return (NULL);
264 return (ex->object);
265 }
266
X509_EXTENSION_get_data(X509_EXTENSION * ex)267 ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex)
268 {
269 if (ex == NULL)
270 return (NULL);
271 return (ex->value);
272 }
273
X509_EXTENSION_get_critical(const X509_EXTENSION * ex)274 int X509_EXTENSION_get_critical(const X509_EXTENSION *ex)
275 {
276 if (ex == NULL)
277 return (0);
278 if (ex->critical > 0)
279 return 1;
280 return 0;
281 }
282