openssl/crypto/x509v3/v3_lib.c

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/* v3_lib.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
* project 1999.
*/
/* ====================================================================
* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
/* X509 v3 extension utilities */
#include <stdio.h>
#include "cryptlib.h"
#include "conf.h"
#include "x509v3.h"
static STACK *ext_list = NULL;
static int ext_cmp(X509V3_EXT_METHOD **a, X509V3_EXT_METHOD **b);
static void ext_list_free(X509V3_EXT_METHOD *ext);
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int X509V3_EXT_add(X509V3_EXT_METHOD *ext)
{
if(!ext_list && !(ext_list = sk_new(ext_cmp))) {
X509V3err(X509V3_F_X509V3_EXT_ADD,ERR_R_MALLOC_FAILURE);
return 0;
}
if(!sk_push(ext_list, (char *)ext)) {
X509V3err(X509V3_F_X509V3_EXT_ADD,ERR_R_MALLOC_FAILURE);
return 0;
}
return 1;
}
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static int ext_cmp(X509V3_EXT_METHOD **a, X509V3_EXT_METHOD **b)
{
return ((*a)->ext_nid - (*b)->ext_nid);
}
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X509V3_EXT_METHOD *X509V3_EXT_get_nid(int nid)
{
X509V3_EXT_METHOD tmp;
int idx;
tmp.ext_nid = nid;
if(!ext_list || (tmp.ext_nid < 0) ) return NULL;
idx = sk_find(ext_list, (char *)&tmp);
if(idx == -1) return NULL;
return (X509V3_EXT_METHOD *)sk_value(ext_list, idx);
}
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X509V3_EXT_METHOD *X509V3_EXT_get(X509_EXTENSION *ext)
{
int nid;
if((nid = OBJ_obj2nid(ext->object)) == NID_undef) return NULL;
return X509V3_EXT_get_nid(nid);
}
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int X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist)
{
for(;extlist->ext_nid!=-1;extlist++)
if(!X509V3_EXT_add(extlist)) return 0;
return 1;
}
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int X509V3_EXT_add_alias(int nid_to, int nid_from)
{
X509V3_EXT_METHOD *ext, *tmpext;
if(!(ext = X509V3_EXT_get_nid(nid_from))) {
X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,X509V3_R_EXTENSION_NOT_FOUND);
return 0;
}
if(!(tmpext = (X509V3_EXT_METHOD *)Malloc(sizeof(X509V3_EXT_METHOD)))) {
X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,ERR_R_MALLOC_FAILURE);
return 0;
}
*tmpext = *ext;
tmpext->ext_nid = nid_to;
tmpext->ext_flags |= X509V3_EXT_DYNAMIC;
return 1;
}
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void X509V3_EXT_cleanup(void)
{
sk_pop_free(ext_list, ext_list_free);
}
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static void ext_list_free(X509V3_EXT_METHOD *ext)
{
if(ext->ext_flags & X509V3_EXT_DYNAMIC) Free(ext);
}
extern X509V3_EXT_METHOD v3_bcons, v3_nscert, v3_key_usage, v3_ext_ku;
extern X509V3_EXT_METHOD v3_pkey_usage_period, v3_sxnet;
extern X509V3_EXT_METHOD v3_ns_ia5_list[], v3_alt[], v3_skey_id, v3_akey_id;
extern X509V3_EXT_METHOD v3_crl_num, v3_crl_reason, v3_cpols, v3_crld;
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int X509V3_add_standard_extensions(void)
{
X509V3_EXT_add_list(v3_ns_ia5_list);
X509V3_EXT_add_list(v3_alt);
X509V3_EXT_add(&v3_bcons);
X509V3_EXT_add(&v3_nscert);
X509V3_EXT_add(&v3_key_usage);
X509V3_EXT_add(&v3_ext_ku);
X509V3_EXT_add(&v3_skey_id);
X509V3_EXT_add(&v3_akey_id);
X509V3_EXT_add(&v3_pkey_usage_period);
X509V3_EXT_add(&v3_crl_num);
X509V3_EXT_add(&v3_sxnet);
X509V3_EXT_add(&v3_crl_reason);
X509V3_EXT_add(&v3_cpols);
X509V3_EXT_add(&v3_crld);
return 1;
}
/* Return an extension internal structure */
void *X509V3_EXT_d2i(X509_EXTENSION *ext)
{
X509V3_EXT_METHOD *method;
unsigned char *p;
if(!(method = X509V3_EXT_get(ext)) || !method->d2i) return NULL;
p = ext->value->data;
return method->d2i(NULL, &p, ext->value->length);
}