f5dda420d1b4499f4b163483d99cb79e994ec7d5
[openssl.git] / crypto / x509v3 / v3_lib.c
1 /* v3_lib.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 /* X509 v3 extension utilities */
59
60 #include <stdio.h>
61 #include "cryptlib.h"
62 #include "conf.h"
63 #include "x509v3.h"
64
65 static STACK *ext_list = NULL;
66
67 static int ext_cmp(X509V3_EXT_METHOD **a, X509V3_EXT_METHOD **b);
68 static void ext_list_free(X509V3_EXT_METHOD *ext);
69
70 int X509V3_EXT_add(ext)
71 X509V3_EXT_METHOD *ext;
72 {
73         if(!ext_list && !(ext_list = sk_new(ext_cmp))) {
74                 X509V3err(X509V3_F_X509V3_EXT_ADD,ERR_R_MALLOC_FAILURE);
75                 return 0;
76         }
77         if(!sk_push(ext_list, (char *)ext)) {
78                 X509V3err(X509V3_F_X509V3_EXT_ADD,ERR_R_MALLOC_FAILURE);
79                 return 0;
80         }
81         return 1;
82 }
83
84 static int ext_cmp(a, b)
85 X509V3_EXT_METHOD **a, **b;
86 {
87         return ((*a)->ext_nid - (*b)->ext_nid);
88 }
89
90 X509V3_EXT_METHOD *X509V3_EXT_get_nid(nid)
91 int nid;
92 {
93         X509V3_EXT_METHOD tmp;
94         int idx;
95         tmp.ext_nid = nid;
96         if(!ext_list || (tmp.ext_nid < 0) ) return NULL;
97         idx = sk_find(ext_list, (char *)&tmp);
98         if(idx == -1) return NULL;
99         return (X509V3_EXT_METHOD *)sk_value(ext_list, idx);
100 }
101
102 X509V3_EXT_METHOD *X509V3_EXT_get(ext)
103 X509_EXTENSION *ext;
104 {
105         int nid;
106         if((nid = OBJ_obj2nid(ext->object)) == NID_undef) return NULL;
107         return X509V3_EXT_get_nid(nid);
108 }
109
110
111 int X509V3_EXT_add_list(extlist)
112 X509V3_EXT_METHOD *extlist;
113 {
114         for(;extlist->ext_nid!=-1;extlist++) 
115                         if(!X509V3_EXT_add(extlist)) return 0;
116         return 1;
117 }
118
119 int X509V3_EXT_add_alias(nid_to, nid_from)
120 int nid_to, nid_from;
121 {
122         X509V3_EXT_METHOD *ext, *tmpext;
123         if(!(ext = X509V3_EXT_get_nid(nid_from))) {
124                 X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,X509V3_R_EXTENSION_NOT_FOUND);
125                 return 0;
126         }
127         if(!(tmpext = (X509V3_EXT_METHOD *)Malloc(sizeof(X509V3_EXT_METHOD)))) {
128                 X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,ERR_R_MALLOC_FAILURE);
129                 return 0;
130         }
131         *tmpext = *ext;
132         tmpext->ext_nid = nid_to;
133         tmpext->ext_flags |= X509V3_EXT_DYNAMIC;
134         return 1;
135 }
136
137 void X509V3_EXT_cleanup()
138 {
139         sk_pop_free(ext_list, ext_list_free);
140 }
141
142 static void ext_list_free(ext)
143 X509V3_EXT_METHOD *ext;
144 {
145         if(ext->ext_flags & X509V3_EXT_DYNAMIC) Free(ext);
146 }
147
148 extern X509V3_EXT_METHOD v3_bcons, v3_nscert, v3_key_usage, v3_ext_ku;
149 extern X509V3_EXT_METHOD v3_pkey_usage_period, v3_sxnet;
150 extern X509V3_EXT_METHOD v3_ns_ia5_list[], v3_alt[], v3_skey_id, v3_akey_id;
151
152 extern X509V3_EXT_METHOD v3_crl_num, v3_crl_reason;
153
154 int X509V3_add_standard_extensions()
155 {
156         X509V3_EXT_add_list(v3_ns_ia5_list);
157         X509V3_EXT_add_list(v3_alt);
158         X509V3_EXT_add(&v3_bcons);
159         X509V3_EXT_add(&v3_nscert);
160         X509V3_EXT_add(&v3_key_usage);
161         X509V3_EXT_add(&v3_ext_ku);
162         X509V3_EXT_add(&v3_skey_id);
163         X509V3_EXT_add(&v3_akey_id);
164         X509V3_EXT_add(&v3_pkey_usage_period);
165         X509V3_EXT_add(&v3_crl_num);
166         X509V3_EXT_add(&v3_sxnet);
167         X509V3_EXT_add(&v3_crl_reason);
168         return 1;
169 }
170
171 /* Return an extension internal structure */
172
173 char *X509V3_EXT_d2i(ext)
174 X509_EXTENSION *ext;
175 {
176         X509V3_EXT_METHOD *method;
177         unsigned char *p;
178         if(!(method = X509V3_EXT_get(ext)) || !method->d2i) return NULL;
179         p = ext->value->data;
180         return method->d2i(NULL, &p, ext->value->length);
181 }
182