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 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_ADD_EXT,ERR_R_MALLOC_FAILURE);
  75                 return 0;
  76         }
  77         if(!sk_push(ext_list, (char *)ext)) {
  78                 X509V3err(X509V3_F_X509V3_ADD_EXT,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;
 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_crl_reason);
 167         return 1;
 168 }
 169
 170 /* Return an extension internal structure */
 171
 172 char *X509V3_EXT_d2i(ext)
 173 X509_EXTENSION *ext;
 174 {
 175         X509V3_EXT_METHOD *method;
 176         unsigned char *p;
 177         if(!(method = X509V3_EXT_get(ext)) || !method->d2i) return NULL;
 178         p = ext->value->data;
 179         return method->d2i(NULL, &p, ext->value->length);
 180 }
 181