2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
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).
61 #include <openssl/x509v3.h>
64 static int tr_cmp(const X509_TRUST * const *a,
65 const X509_TRUST * const *b);
66 static void trtable_free(X509_TRUST *p);
68 static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags);
69 static int trust_1oid(X509_TRUST *trust, X509 *x, int flags);
70 static int trust_compat(X509_TRUST *trust, X509 *x, int flags);
72 static int obj_trust(int id, X509 *x, int flags);
73 static int (*default_trust)(int id, X509 *x, int flags) = obj_trust;
75 /* WARNING: the following table should be kept in order of trust
76 * and without any gaps so we can just subtract the minimum trust
77 * value to get an index into the table
80 static X509_TRUST trstandard[] = {
81 {X509_TRUST_COMPAT, 0, trust_compat, "compatible", 0, NULL},
82 {X509_TRUST_SSL_CLIENT, 0, trust_1oidany, "SSL Client", NID_client_auth, NULL},
83 {X509_TRUST_SSL_SERVER, 0, trust_1oidany, "SSL Client", NID_server_auth, NULL},
84 {X509_TRUST_EMAIL, 0, trust_1oidany, "S/MIME email", NID_email_protect, NULL},
85 {X509_TRUST_OCSP_SIGN, 0, trust_1oid, "OCSP responder", NID_OCSP_sign, NULL},
86 {X509_TRUST_OCSP_REQUEST, 0, trust_1oid, "OCSP request", NID_ad_OCSP, NULL}
89 #define X509_TRUST_COUNT (sizeof(trstandard)/sizeof(X509_TRUST))
91 IMPLEMENT_STACK_OF(X509_TRUST)
93 static STACK_OF(X509_TRUST) *trtable = NULL;
95 static int tr_cmp(const X509_TRUST * const *a,
96 const X509_TRUST * const *b)
98 return (*a)->trust - (*b)->trust;
101 int (*X509_TRUST_set_default(int (*trust)(int , X509 *, int)))(int, X509 *, int)
103 int (*oldtrust)(int , X509 *, int);
104 oldtrust = default_trust;
105 default_trust = trust;
110 int X509_check_trust(X509 *x, int id, int flags)
114 if(id == -1) return 1;
115 idx = X509_TRUST_get_by_id(id);
116 if(idx == -1) return default_trust(id, x, flags);
117 pt = X509_TRUST_get0(idx);
118 return pt->check_trust(pt, x, flags);
121 int X509_TRUST_get_count(void)
123 if(!trtable) return X509_TRUST_COUNT;
124 return sk_X509_TRUST_num(trtable) + X509_TRUST_COUNT;
127 X509_TRUST * X509_TRUST_get0(int idx)
129 if(idx < 0) return NULL;
130 if(idx < X509_TRUST_COUNT) return trstandard + idx;
131 return sk_X509_TRUST_value(trtable, idx - X509_TRUST_COUNT);
134 int X509_TRUST_get_by_id(int id)
138 if((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX))
139 return id - X509_TRUST_MIN;
141 if(!trtable) return -1;
142 idx = sk_X509_TRUST_find(trtable, &tmp);
143 if(idx == -1) return -1;
144 return idx + X509_TRUST_COUNT;
147 int X509_TRUST_set(int *t, int trust)
149 if(X509_TRUST_get_by_id(trust) == -1) {
150 X509err(X509_F_X509_TRUST_SET, X509_R_INVALID_TRUST);
157 int X509_TRUST_add(int id, int flags, int (*ck)(X509_TRUST *, X509 *, int),
158 char *name, int arg1, void *arg2)
162 /* This is set according to what we change: application can't set it */
163 flags &= ~X509_TRUST_DYNAMIC;
164 /* This will always be set for application modified trust entries */
165 flags |= X509_TRUST_DYNAMIC_NAME;
166 /* Get existing entry if any */
167 idx = X509_TRUST_get_by_id(id);
168 /* Need a new entry */
170 if(!(trtmp = OPENSSL_malloc(sizeof(X509_TRUST)))) {
171 X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
174 trtmp->flags = X509_TRUST_DYNAMIC;
175 } else trtmp = X509_TRUST_get0(idx);
177 /* OPENSSL_free existing name if dynamic */
178 if(trtmp->flags & X509_TRUST_DYNAMIC_NAME) OPENSSL_free(trtmp->name);
179 /* dup supplied name */
180 if(!(trtmp->name = BUF_strdup(name))) {
181 X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
184 /* Keep the dynamic flag of existing entry */
185 trtmp->flags &= X509_TRUST_DYNAMIC;
186 /* Set all other flags */
187 trtmp->flags |= flags;
190 trtmp->check_trust = ck;
194 /* If its a new entry manage the dynamic table */
196 if(!trtable && !(trtable = sk_X509_TRUST_new(tr_cmp))) {
197 X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
200 if (!sk_X509_TRUST_push(trtable, trtmp)) {
201 X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
208 static void trtable_free(X509_TRUST *p)
211 if (p->flags & X509_TRUST_DYNAMIC)
213 if (p->flags & X509_TRUST_DYNAMIC_NAME)
214 OPENSSL_free(p->name);
219 void X509_TRUST_cleanup(void)
222 for(i = 0; i < X509_TRUST_COUNT; i++) trtable_free(trstandard + i);
223 sk_X509_TRUST_pop_free(trtable, trtable_free);
227 int X509_TRUST_get_flags(X509_TRUST *xp)
232 char *X509_TRUST_get0_name(X509_TRUST *xp)
237 int X509_TRUST_get_trust(X509_TRUST *xp)
242 static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags)
244 if(x->aux && (x->aux->trust || x->aux->reject))
245 return obj_trust(trust->arg1, x, flags);
246 /* we don't have any trust settings: for compatibility
247 * we return trusted if it is self signed
249 return trust_compat(trust, x, flags);
252 static int trust_1oid(X509_TRUST *trust, X509 *x, int flags)
254 if(x->aux) return obj_trust(trust->arg1, x, flags);
255 return X509_TRUST_UNTRUSTED;
258 static int trust_compat(X509_TRUST *trust, X509 *x, int flags)
260 X509_check_purpose(x, -1, 0);
261 if(x->ex_flags & EXFLAG_SS) return X509_TRUST_TRUSTED;
262 else return X509_TRUST_UNTRUSTED;
265 static int obj_trust(int id, X509 *x, int flags)
271 if(!ax) return X509_TRUST_UNTRUSTED;
273 for(i = 0; i < sk_ASN1_OBJECT_num(ax->reject); i++) {
274 obj = sk_ASN1_OBJECT_value(ax->reject, i);
275 if(OBJ_obj2nid(obj) == id) return X509_TRUST_REJECTED;
279 for(i = 0; i < sk_ASN1_OBJECT_num(ax->trust); i++) {
280 obj = sk_ASN1_OBJECT_value(ax->trust, i);
281 if(OBJ_obj2nid(obj) == id) return X509_TRUST_TRUSTED;
284 return X509_TRUST_UNTRUSTED;