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/* v3_conf.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).
*
*/
/* extension creation utilities */
#include <stdio.h>
#include <ctype.h>
#include "cryptlib.h"
#include "conf.h"
#include "x509.h"
#include "x509v3.h"
#ifndef NOPROTO
static int v3_check_critical(char **value);
static int v3_check_generic(char **value);
static X509_EXTENSION *do_ext_conf(LHASH *conf, X509V3_CTX *ctx, int ext_nid, int crit, char *value);
static X509_EXTENSION *v3_generic_extension(const char *ext, char *value, int crit, int type);
static char *conf_lhash_get_string(void *db, char *section, char *value);
static STACK *conf_lhash_get_section(void *db, char *section);
#else
static int v3_check_critical();
static int v3_check_generic();
static X509_EXTENSION *do_ext_conf();
static X509V3_EXTENSION *v3_generic_extension();
static char *conf_lhash_get_string();
static STACK *conf_lhash_get_section();
#endif
/* LHASH *conf: Config file */
/* char *name: Name */
/* char *value: Value */
X509_EXTENSION *X509V3_EXT_conf(LHASH *conf, X509V3_CTX *ctx, char *name,
char *value)
{
int crit;
int ext_type;
X509_EXTENSION *ret;
crit = v3_check_critical(&value);
if((ext_type = v3_check_generic(&value)))
return v3_generic_extension(name, value, crit, ext_type);
ret = do_ext_conf(conf, ctx, OBJ_sn2nid(name), crit, value);
if(!ret) {
X509V3err(X509V3_F_X509V3_EXT_CONF,X509V3_R_ERROR_IN_EXTENSION);
ERR_add_error_data(4,"name=", name, ", value=", value);
}
return ret;
}
/* LHASH *conf: Config file */
/* char *value: Value */
X509_EXTENSION *X509V3_EXT_conf_nid(LHASH *conf, X509V3_CTX *ctx, int ext_nid,
char *value)
{
int crit;
int ext_type;
crit = v3_check_critical(&value);
if((ext_type = v3_check_generic(&value)))
return v3_generic_extension(OBJ_nid2sn(ext_nid),
value, crit, ext_type);
return do_ext_conf(conf, ctx, ext_nid, crit, value);
}
/* LHASH *conf: Config file */
/* char *value: Value */
static X509_EXTENSION *do_ext_conf(LHASH *conf, X509V3_CTX *ctx, int ext_nid,
int crit, char *value)
{
X509_EXTENSION *ext = NULL;
X509V3_EXT_METHOD *method;
STACK *nval;
char *ext_struc;
char *ext_der, *p;
int ext_len;
ASN1_OCTET_STRING *ext_oct;
if(ext_nid == NID_undef) {
X509V3err(X509V3_F_DO_EXT_CONF,X509V3_R_UNKNOWN_EXTENSION_NAME);
return NULL;
}
if(!(method = X509V3_EXT_get_nid(ext_nid))) {
X509V3err(X509V3_F_DO_EXT_CONF,X509V3_R_UNKNOWN_EXTENSION);
return NULL;
}
/* Now get internal extension representation based on type */
if(method->v2i) {
if(*value == '@') nval = CONF_get_section(conf, value + 1);
else nval = X509V3_parse_list(value);
if(!nval) {
X509V3err(X509V3_F_X509V3_EXT_CONF,X509V3_R_INVALID_EXTENSION_STRING);
ERR_add_error_data(4, "name=", OBJ_nid2sn(ext_nid), ",section=", value);
return NULL;
}
ext_struc = method->v2i(method, ctx, nval);
if(*value != '@') sk_pop_free(nval, X509V3_conf_free);
if(!ext_struc) return NULL;
} else if(method->s2i) {
if(!(ext_struc = method->s2i(method, ctx, value))) return NULL;
} else if(method->r2i) {
if(!ctx->db) {
X509V3err(X509V3_F_X509V3_EXT_CONF,X509V3_R_NO_CONFIG_DATABASE);
return NULL;
}
if(!(ext_struc = method->r2i(method, ctx, value))) return NULL;
} else {
X509V3err(X509V3_F_X509V3_EXT_CONF,X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid));
return NULL;
}
/* We've now got the internal representation: convert to DER */
ext_len = method->i2d(ext_struc, NULL);
ext_der = Malloc(ext_len);
p = ext_der;
method->i2d(ext_struc, &p);
method->ext_free(ext_struc);
ext_oct = ASN1_OCTET_STRING_new();
ext_oct->data = ext_der;
ext_oct->length = ext_len;
ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
ASN1_OCTET_STRING_free(ext_oct);
return ext;
}
/* Check the extension string for critical flag */
static int v3_check_critical(char **value)
{
char *p = *value;
if((strlen(p) < 9) || strncmp(p, "critical,", 9)) return 0;
p+=9;
while(isspace(*p)) p++;
*value = p;
return 1;
}
/* Check extension string for generic extension and return the type */
static int v3_check_generic(char **value)
{
char *p = *value;
if((strlen(p) < 4) || strncmp(p, "RAW:,", 4)) return 0;
p+=4;
while(isspace(*p)) p++;
*value = p;
return 1;
}
/* Create a generic extension: for now just handle RAW type */
static X509_EXTENSION *v3_generic_extension(const char *ext, char *value,
int crit, int type)
{
unsigned char *ext_der=NULL;
long ext_len;
ASN1_OBJECT *obj=NULL;
ASN1_OCTET_STRING *oct=NULL;
X509_EXTENSION *extension=NULL;
if(!(obj = OBJ_txt2obj(ext, 0))) {
X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_NAME_ERROR);
ERR_add_error_data(2, "name=", ext);
goto err;
}
if(!(ext_der = string_to_hex(value, &ext_len))) {
X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_VALUE_ERROR);
ERR_add_error_data(2, "value=", value);
goto err;
}
if(!(oct = ASN1_OCTET_STRING_new())) {
X509V3err(X509V3_F_V3_GENERIC_EXTENSION,ERR_R_MALLOC_FAILURE);
goto err;
}
oct->data = ext_der;
oct->length = ext_len;
ext_der = NULL;
extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);
err:
ASN1_OBJECT_free(obj);
ASN1_OCTET_STRING_free(oct);
if(ext_der) Free(ext_der);
return extension;
}
/* This is the main function: add a bunch of extensions based on a config file
* section
*/
int X509V3_EXT_add_conf(LHASH *conf, X509V3_CTX *ctx, char *section,
X509 *cert)
{
X509_EXTENSION *ext;
STACK *nval;
CONF_VALUE *val;
int i;
if(!(nval = CONF_get_section(conf, section))) return 0;
for(i
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