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authorcvs2svn <admin@example.com>2001-10-01 21:58:54 +0000
committercvs2svn <admin@example.com>2001-10-01 21:58:54 +0000
commit2b482d950b0e856294fcd4c1068c1b21939a7240 (patch)
treeaa05f6be64877f76547f1b54ad84f7bfcb291f5d /src/lib/libcrypto/x509/x509_trs.c
parentd7b0aad33e28dafbbef67eb5b84ecb05a844fc88 (diff)
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diff --git a/src/lib/libcrypto/x509/x509_trs.c b/src/lib/libcrypto/x509/x509_trs.c
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1/* x509_trs.c */
2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3 * project 1999.
4 */
5/* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include <stdio.h>
60#include "cryptlib.h"
61#include <openssl/x509v3.h>
62
63
64static int tr_cmp(const X509_TRUST * const *a,
65 const X509_TRUST * const *b);
66static void trtable_free(X509_TRUST *p);
67
68static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags);
69static int trust_compat(X509_TRUST *trust, X509 *x, int flags);
70
71static int obj_trust(int id, X509 *x, int flags);
72static int (*default_trust)(int id, X509 *x, int flags) = obj_trust;
73
74/* WARNING: the following table should be kept in order of trust
75 * and without any gaps so we can just subtract the minimum trust
76 * value to get an index into the table
77 */
78
79static X509_TRUST trstandard[] = {
80{X509_TRUST_COMPAT, 0, trust_compat, "compatible", 0, NULL},
81{X509_TRUST_SSL_CLIENT, 0, trust_1oidany, "SSL Client", NID_client_auth, NULL},
82{X509_TRUST_SSL_SERVER, 0, trust_1oidany, "SSL Client", NID_server_auth, NULL},
83{X509_TRUST_EMAIL, 0, trust_1oidany, "S/MIME email", NID_email_protect, NULL},
84};
85
86#define X509_TRUST_COUNT (sizeof(trstandard)/sizeof(X509_TRUST))
87
88IMPLEMENT_STACK_OF(X509_TRUST)
89
90static STACK_OF(X509_TRUST) *trtable = NULL;
91
92static int tr_cmp(const X509_TRUST * const *a,
93 const X509_TRUST * const *b)
94{
95 return (*a)->trust - (*b)->trust;
96}
97
98int (*X509_TRUST_set_default(int (*trust)(int , X509 *, int)))(int, X509 *, int)
99{
100int (*oldtrust)(int , X509 *, int);
101oldtrust = default_trust;
102default_trust = trust;
103return oldtrust;
104}
105
106
107int X509_check_trust(X509 *x, int id, int flags)
108{
109 X509_TRUST *pt;
110 int idx;
111 if(id == -1) return 1;
112 idx = X509_TRUST_get_by_id(id);
113 if(idx == -1) return default_trust(id, x, flags);
114 pt = X509_TRUST_get0(idx);
115 return pt->check_trust(pt, x, flags);
116}
117
118int X509_TRUST_get_count(void)
119{
120 if(!trtable) return X509_TRUST_COUNT;
121 return sk_X509_TRUST_num(trtable) + X509_TRUST_COUNT;
122}
123
124X509_TRUST * X509_TRUST_get0(int idx)
125{
126 if(idx < 0) return NULL;
127 if(idx < X509_TRUST_COUNT) return trstandard + idx;
128 return sk_X509_TRUST_value(trtable, idx - X509_TRUST_COUNT);
129}
130
131int X509_TRUST_get_by_id(int id)
132{
133 X509_TRUST tmp;
134 int idx;
135 if((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX))
136 return id - X509_TRUST_MIN;
137 tmp.trust = id;
138 if(!trtable) return -1;
139 idx = sk_X509_TRUST_find(trtable, &tmp);
140 if(idx == -1) return -1;
141 return idx + X509_TRUST_COUNT;
142}
143
144int X509_TRUST_add(int id, int flags, int (*ck)(X509_TRUST *, X509 *, int),
145 char *name, int arg1, void *arg2)
146{
147 int idx;
148 X509_TRUST *trtmp;
149 /* This is set according to what we change: application can't set it */
150 flags &= ~X509_TRUST_DYNAMIC;
151 /* This will always be set for application modified trust entries */
152 flags |= X509_TRUST_DYNAMIC_NAME;
153 /* Get existing entry if any */
154 idx = X509_TRUST_get_by_id(id);
155 /* Need a new entry */
156 if(idx == -1) {
157 if(!(trtmp = OPENSSL_malloc(sizeof(X509_TRUST)))) {
158 X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
159 return 0;
160 }
161 trtmp->flags = X509_TRUST_DYNAMIC;
162 } else trtmp = X509_TRUST_get0(idx);
163
164 /* OPENSSL_free existing name if dynamic */
165 if(trtmp->flags & X509_TRUST_DYNAMIC_NAME) OPENSSL_free(trtmp->name);
166 /* dup supplied name */
167 if(!(trtmp->name = BUF_strdup(name))) {
168 X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
169 return 0;
170 }
171 /* Keep the dynamic flag of existing entry */
172 trtmp->flags &= X509_TRUST_DYNAMIC;
173 /* Set all other flags */
174 trtmp->flags |= flags;
175
176 trtmp->trust = id;
177 trtmp->check_trust = ck;
178 trtmp->arg1 = arg1;
179 trtmp->arg2 = arg2;
180
181 /* If its a new entry manage the dynamic table */
182 if(idx == -1) {
183 if(!trtable && !(trtable = sk_X509_TRUST_new(tr_cmp))) {
184 X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
185 return 0;
186 }
187 if (!sk_X509_TRUST_push(trtable, trtmp)) {
188 X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
189 return 0;
190 }
191 }
192 return 1;
193}
194
195static void trtable_free(X509_TRUST *p)
196 {
197 if(!p) return;
198 if (p->flags & X509_TRUST_DYNAMIC)
199 {
200 if (p->flags & X509_TRUST_DYNAMIC_NAME)
201 OPENSSL_free(p->name);
202 OPENSSL_free(p);
203 }
204 }
205
206void X509_TRUST_cleanup(void)
207{
208 int i;
209 for(i = 0; i < X509_TRUST_COUNT; i++) trtable_free(trstandard + i);
210 sk_X509_TRUST_pop_free(trtable, trtable_free);
211 trtable = NULL;
212}
213
214int X509_TRUST_get_flags(X509_TRUST *xp)
215{
216 return xp->flags;
217}
218
219char *X509_TRUST_get0_name(X509_TRUST *xp)
220{
221 return xp->name;
222}
223
224int X509_TRUST_get_trust(X509_TRUST *xp)
225{
226 return xp->trust;
227}
228
229static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags)
230{
231 if(x->aux && (x->aux->trust || x->aux->reject))
232 return obj_trust(trust->arg1, x, flags);
233 /* we don't have any trust settings: for compatibility
234 * we return trusted if it is self signed
235 */
236 return trust_compat(trust, x, flags);
237}
238
239static int trust_compat(X509_TRUST *trust, X509 *x, int flags)
240{
241 X509_check_purpose(x, -1, 0);
242 if(x->ex_flags & EXFLAG_SS) return X509_TRUST_TRUSTED;
243 else return X509_TRUST_UNTRUSTED;
244}
245
246static int obj_trust(int id, X509 *x, int flags)
247{
248 ASN1_OBJECT *obj;
249 int i;
250 X509_CERT_AUX *ax;
251 ax = x->aux;
252 if(!ax) return X509_TRUST_UNTRUSTED;
253 if(ax->reject) {
254 for(i = 0; i < sk_ASN1_OBJECT_num(ax->reject); i++) {
255 obj = sk_ASN1_OBJECT_value(ax->reject, i);
256 if(OBJ_obj2nid(obj) == id) return X509_TRUST_REJECTED;
257 }
258 }
259 if(ax->trust) {
260 for(i = 0; i < sk_ASN1_OBJECT_num(ax->trust); i++) {
261 obj = sk_ASN1_OBJECT_value(ax->trust, i);
262 if(OBJ_obj2nid(obj) == id) return X509_TRUST_TRUSTED;
263 }
264 }
265 return X509_TRUST_UNTRUSTED;
266}
267
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