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(X509_TRUST **a, X509_TRUST **b);
65 static void trtable_free(X509_TRUST *p);
67 static int trust_1bit(X509_TRUST *trust, X509 *x, int flags);
68 static int trust_any(X509_TRUST *trust, X509 *x, int flags);
70 /* WARNING: the following table should be kept in order of trust
71 * and without any gaps so we can just subtract the minimum trust
72 * value to get an index into the table
75 static X509_TRUST trstandard[] = {
76 {X509_TRUST_ANY, 0, trust_any, "Any", 0, NULL},
77 {X509_TRUST_SSL_CLIENT, 0, trust_1bit, "SSL Client", X509_TRUST_BIT_SSL_CLIENT, NULL},
78 {X509_TRUST_SSL_SERVER, 0, trust_1bit, "SSL Client", X509_TRUST_BIT_SSL_SERVER, NULL},
79 {X509_TRUST_EMAIL, 0, trust_1bit, "S/MIME email", X509_TRUST_BIT_EMAIL, NULL},
80 {X509_TRUST_OBJECT_SIGN, 0, trust_1bit, "Object Signing", X509_TRUST_BIT_OBJECT_SIGN, NULL},
83 #define X509_TRUST_COUNT (sizeof(trstandard)/sizeof(X509_TRUST))
85 IMPLEMENT_STACK_OF(X509_TRUST)
87 static STACK_OF(X509_TRUST) *trtable = NULL;
89 static int tr_cmp(X509_TRUST **a, X509_TRUST **b)
91 return (*a)->trust - (*b)->trust;
94 int X509_check_trust(X509 *x, int id, int flags)
98 if(id == -1) return 1;
99 if(!(idx = X509_TRUST_get_by_id(id))) return 0;
100 pt = X509_TRUST_iget(idx);
101 return pt->check_trust(pt, x, flags);
104 int X509_TRUST_get_count(void)
106 if(!trtable) return X509_TRUST_COUNT;
107 return sk_X509_TRUST_num(trtable) + X509_TRUST_COUNT;
110 X509_TRUST * X509_TRUST_iget(int idx)
112 if(idx < 0) return NULL;
113 if(idx < X509_TRUST_COUNT) return trstandard + idx;
114 return sk_X509_TRUST_value(trtable, idx - X509_TRUST_COUNT);
117 int X509_TRUST_get_by_id(int id)
121 if((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX))
122 return id - X509_TRUST_MIN;
124 if(!trtable) return -1;
125 idx = sk_X509_TRUST_find(trtable, &tmp);
126 if(idx == -1) return -1;
127 return idx + X509_TRUST_COUNT;
130 int X509_TRUST_add(int id, int flags, int (*ck)(X509_TRUST *, X509 *, int),
131 char *name, int arg1, void *arg2)
135 /* This is set according to what we change: application can't set it */
136 flags &= ~X509_TRUST_DYNAMIC;
137 /* This will always be set for application modified trust entries */
138 flags |= X509_TRUST_DYNAMIC_NAME;
139 /* Get existing entry if any */
140 idx = X509_TRUST_get_by_id(id);
141 /* Need a new entry */
143 if(!(trtmp = Malloc(sizeof(X509_TRUST)))) {
144 X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
147 trtmp->flags = X509_TRUST_DYNAMIC;
148 } else trtmp = X509_TRUST_iget(idx);
150 /* Free existing name if dynamic */
151 if(trtmp->flags & X509_TRUST_DYNAMIC_NAME) Free(trtmp->name);
152 /* dup supplied name */
153 if(!(trtmp->name = BUF_strdup(name))) {
154 X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
157 /* Keep the dynamic flag of existing entry */
158 trtmp->flags &= X509_TRUST_DYNAMIC;
159 /* Set all other flags */
160 trtmp->flags |= flags;
163 trtmp->check_trust = ck;
167 /* If its a new entry manage the dynamic table */
169 if(!trtable && !(trtable = sk_X509_TRUST_new(tr_cmp))) {
170 X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
173 if (!sk_X509_TRUST_push(trtable, trtmp)) {
174 X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
181 static void trtable_free(X509_TRUST *p)
184 if (p->flags & X509_TRUST_DYNAMIC)
186 if (p->flags & X509_TRUST_DYNAMIC_NAME)
192 void X509_TRUST_cleanup(void)
195 for(i = 0; i < X509_TRUST_COUNT; i++) trtable_free(trstandard + i);
196 sk_X509_TRUST_pop_free(trtable, trtable_free);
200 int X509_TRUST_get_flags(X509_TRUST *xp)
205 char *X509_TRUST_iget_name(X509_TRUST *xp)
210 int X509_TRUST_get_trust(X509_TRUST *xp)
215 static int trust_1bit(X509_TRUST *trust, X509 *x, int flags)
221 && ( ASN1_BIT_STRING_get_bit(ax->reject, X509_TRUST_BIT_ALL)
222 || ASN1_BIT_STRING_get_bit(ax->reject, trust->arg1)))
223 return X509_TRUST_REJECTED;
224 if(ax->trust && (ASN1_BIT_STRING_get_bit(ax->trust, X509_TRUST_BIT_ALL)
225 || ASN1_BIT_STRING_get_bit(ax->trust, trust->arg1)))
226 return X509_TRUST_TRUSTED;
227 return X509_TRUST_UNTRUSTED;
229 /* we don't have any trust settings: for compatability
230 * we return trusted if it is self signed
232 X509_check_purpose(x, -1, 0);
233 if(x->ex_flags & EXFLAG_SS) return X509_TRUST_TRUSTED;
234 else return X509_TRUST_UNTRUSTED;
237 static int trust_any(X509_TRUST *trust, X509 *x, int flags)
239 return X509_TRUST_TRUSTED;