379 lines
10 KiB
C
379 lines
10 KiB
C
/* 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(char *ext, char *value, int crit, int type);
|
|
#else
|
|
static int v3_check_critical();
|
|
static int v3_check_generic();
|
|
static X509_EXTENSION *do_ext_conf();
|
|
static X509V3_EXTENSION *v3_generic_extension();
|
|
#endif
|
|
|
|
X509_EXTENSION *X509V3_EXT_conf(conf, ctx, name, value)
|
|
LHASH *conf; /* Config file */
|
|
X509V3_CTX *ctx;
|
|
char *name; /* Name */
|
|
char *value; /* 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;
|
|
}
|
|
|
|
X509_EXTENSION *X509V3_EXT_conf_nid(conf, ctx, ext_nid, value)
|
|
LHASH *conf; /* Config file */
|
|
X509V3_CTX *ctx;
|
|
int ext_nid;
|
|
char *value; /* 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);
|
|
}
|
|
|
|
static X509_EXTENSION *do_ext_conf(conf, ctx, ext_nid, crit, value)
|
|
LHASH *conf; /* Config file */
|
|
X509V3_CTX *ctx;
|
|
int ext_nid;
|
|
int crit;
|
|
char *value; /* 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 {
|
|
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(value)
|
|
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(value)
|
|
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(ext, value, crit, type)
|
|
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(conf, ctx, section, cert)
|
|
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 = 0; i < sk_num(nval); i++) {
|
|
val = (CONF_VALUE *)sk_value(nval, i);
|
|
if(!(ext = X509V3_EXT_conf(conf, ctx, val->name, val->value)))
|
|
return 0;
|
|
if(cert) X509_add_ext(cert, ext, -1);
|
|
X509_EXTENSION_free(ext);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* Same as above but for a CRL */
|
|
|
|
int X509V3_EXT_CRL_add_conf(conf, ctx, section, crl)
|
|
LHASH *conf;
|
|
X509V3_CTX *ctx;
|
|
char *section;
|
|
X509_CRL *crl;
|
|
{
|
|
X509_EXTENSION *ext;
|
|
STACK *nval;
|
|
CONF_VALUE *val;
|
|
int i;
|
|
if(!(nval = CONF_get_section(conf, section))) return 0;
|
|
for(i = 0; i < sk_num(nval); i++) {
|
|
val = (CONF_VALUE *)sk_value(nval, i);
|
|
if(!(ext = X509V3_EXT_conf(conf, ctx, val->name, val->value)))
|
|
return 0;
|
|
if(crl) X509_CRL_add_ext(crl, ext, -1);
|
|
X509_EXTENSION_free(ext);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* Just check syntax of config file as far as possible */
|
|
int X509V3_EXT_check_conf(conf, section)
|
|
LHASH *conf;
|
|
char *section;
|
|
{
|
|
static X509V3_CTX ctx_tst = { CTX_TEST, NULL, NULL, NULL, NULL };
|
|
return X509V3_EXT_add_conf(conf, &ctx_tst, section, NULL);
|
|
}
|
|
|
|
/* Config database functions */
|
|
|
|
char * X509V3_get_string(ctx, name, section)
|
|
X509V3_CTX *ctx;
|
|
char *name;
|
|
char *section;
|
|
{
|
|
if(ctx->db_meth->get_string)
|
|
return ctx->db_meth->get_string(ctx->db, name, section);
|
|
return NULL;
|
|
}
|
|
|
|
STACK * X509V3_get_section(ctx, section)
|
|
X509V3_CTX *ctx;
|
|
char *section;
|
|
{
|
|
if(ctx->db_meth->get_section)
|
|
return ctx->db_meth->get_section(ctx->db, section);
|
|
return NULL;
|
|
}
|
|
|
|
void X509V3_free_string(ctx, str)
|
|
X509V3_CTX *ctx;
|
|
char *str;
|
|
{
|
|
if(ctx->db_meth->free_string)
|
|
return ctx->db_meth->free_string(ctx->db, str);
|
|
}
|
|
|
|
void X509V3_free_section(ctx, section)
|
|
X509V3_CTX *ctx;
|
|
STACK *section;
|
|
{
|
|
if(ctx->db_meth->free_section)
|
|
return ctx->db_meth->free_section(ctx->db, section);
|
|
}
|
|
|
|
static char *conf_lhash_get_string(db, section, value)
|
|
void *db;
|
|
char *section;
|
|
char *value;
|
|
{
|
|
return CONF_get_string(db, section, value);
|
|
}
|
|
|
|
static STACK *conf_lhash_get_section(db, section)
|
|
void *db;
|
|
char *section;
|
|
{
|
|
return CONF_get_section(db, section);
|
|
}
|
|
|
|
static X509V3_CONF_METHOD conf_lhash_method = {
|
|
conf_lhash_get_string,
|
|
conf_lhash_get_section,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
void X509V3_set_conf_lhash(ctx, lhash)
|
|
X509V3_CTX *ctx;
|
|
LHASH *lhash;
|
|
{
|
|
ctx->db_meth = &conf_lhash_method;
|
|
ctx->db = lhash;
|
|
}
|
|
|
|
void X509V3_set_ctx(ctx, issuer, subj, req, crl, flags)
|
|
X509V3_CTX *ctx;
|
|
X509 *issuer;
|
|
X509 *subj;
|
|
X509_REQ *req;
|
|
X509_CRL *crl;
|
|
int flags;
|
|
{
|
|
ctx->issuer_cert = issuer;
|
|
ctx->subject_cert = subj;
|
|
ctx->crl = crl;
|
|
ctx->subject_req = req;
|
|
ctx->flags = flags;
|
|
}
|