526 lines
14 KiB
C
526 lines
14 KiB
C
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/* v3_conf.c */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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* project 1999.
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*/
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/* ====================================================================
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* Copyright (c) 1999-2002 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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/* extension creation utilities */
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#include <stdio.h>
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#include <ctype.h>
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#include "cryptlib.h"
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#include <openssl/conf.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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static int v3_check_critical(char **value);
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static int v3_check_generic(char **value);
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static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid, int crit, char *value);
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static X509_EXTENSION *v3_generic_extension(const char *ext, char *value, int crit, int type, X509V3_CTX *ctx);
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static char *conf_lhash_get_string(void *db, char *section, char *value);
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static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, char *section);
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static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method, int ext_nid,
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int crit, void *ext_struc);
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static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx, long *ext_len);
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/* CONF *conf: Config file */
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/* char *name: Name */
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/* char *value: Value */
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X509_EXTENSION *X509V3_EXT_nconf(CONF *conf, X509V3_CTX *ctx, char *name,
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char *value)
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{
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int crit;
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int ext_type;
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X509_EXTENSION *ret;
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crit = v3_check_critical(&value);
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if ((ext_type = v3_check_generic(&value)))
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return v3_generic_extension(name, value, crit, ext_type, ctx);
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ret = do_ext_nconf(conf, ctx, OBJ_sn2nid(name), crit, value);
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if (!ret)
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{
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X509V3err(X509V3_F_X509V3_EXT_NCONF,X509V3_R_ERROR_IN_EXTENSION);
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ERR_add_error_data(4,"name=", name, ", value=", value);
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}
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return ret;
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}
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/* CONF *conf: Config file */
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/* char *value: Value */
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X509_EXTENSION *X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid,
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char *value)
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{
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int crit;
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int ext_type;
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crit = v3_check_critical(&value);
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if ((ext_type = v3_check_generic(&value)))
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return v3_generic_extension(OBJ_nid2sn(ext_nid),
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value, crit, ext_type, ctx);
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return do_ext_nconf(conf, ctx, ext_nid, crit, value);
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}
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/* CONF *conf: Config file */
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/* char *value: Value */
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static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
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int crit, char *value)
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{
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const X509V3_EXT_METHOD *method;
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X509_EXTENSION *ext;
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STACK_OF(CONF_VALUE) *nval;
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void *ext_struc;
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if (ext_nid == NID_undef)
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{
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X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_UNKNOWN_EXTENSION_NAME);
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return NULL;
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}
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if (!(method = X509V3_EXT_get_nid(ext_nid)))
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{
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X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_UNKNOWN_EXTENSION);
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return NULL;
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}
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/* Now get internal extension representation based on type */
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if (method->v2i)
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{
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if(*value == '@') nval = NCONF_get_section(conf, value + 1);
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else nval = X509V3_parse_list(value);
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if(sk_CONF_VALUE_num(nval) <= 0)
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{
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X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_INVALID_EXTENSION_STRING);
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ERR_add_error_data(4, "name=", OBJ_nid2sn(ext_nid), ",section=", value);
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return NULL;
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}
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ext_struc = method->v2i(method, ctx, nval);
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if(*value != '@') sk_CONF_VALUE_pop_free(nval,
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X509V3_conf_free);
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if(!ext_struc) return NULL;
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}
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else if(method->s2i)
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{
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if(!(ext_struc = method->s2i(method, ctx, value))) return NULL;
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}
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else if(method->r2i)
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{
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if(!ctx->db || !ctx->db_meth)
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{
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X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_NO_CONFIG_DATABASE);
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return NULL;
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}
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if(!(ext_struc = method->r2i(method, ctx, value))) return NULL;
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}
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else
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{
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X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
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ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid));
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return NULL;
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}
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ext = do_ext_i2d(method, ext_nid, crit, ext_struc);
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if(method->it) ASN1_item_free(ext_struc, ASN1_ITEM_ptr(method->it));
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else method->ext_free(ext_struc);
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return ext;
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}
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static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method, int ext_nid,
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int crit, void *ext_struc)
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{
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unsigned char *ext_der;
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int ext_len;
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ASN1_OCTET_STRING *ext_oct;
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X509_EXTENSION *ext;
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/* Convert internal representation to DER */
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if (method->it)
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{
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ext_der = NULL;
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ext_len = ASN1_item_i2d(ext_struc, &ext_der, ASN1_ITEM_ptr(method->it));
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if (ext_len < 0) goto merr;
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}
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else
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{
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unsigned char *p;
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ext_len = method->i2d(ext_struc, NULL);
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if(!(ext_der = OPENSSL_malloc(ext_len))) goto merr;
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p = ext_der;
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method->i2d(ext_struc, &p);
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}
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if (!(ext_oct = M_ASN1_OCTET_STRING_new())) goto merr;
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ext_oct->data = ext_der;
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ext_oct->length = ext_len;
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ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
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if (!ext) goto merr;
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M_ASN1_OCTET_STRING_free(ext_oct);
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return ext;
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merr:
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X509V3err(X509V3_F_DO_EXT_I2D,ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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/* Given an internal structure, nid and critical flag create an extension */
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X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc)
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{
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const X509V3_EXT_METHOD *method;
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if (!(method = X509V3_EXT_get_nid(ext_nid))) {
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X509V3err(X509V3_F_X509V3_EXT_I2D,X509V3_R_UNKNOWN_EXTENSION);
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return NULL;
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}
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return do_ext_i2d(method, ext_nid, crit, ext_struc);
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}
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/* Check the extension string for critical flag */
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static int v3_check_critical(char **value)
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{
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char *p = *value;
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if ((strlen(p) < 9) || strncmp(p, "critical,", 9)) return 0;
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p+=9;
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while(isspace((unsigned char)*p)) p++;
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*value = p;
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return 1;
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}
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/* Check extension string for generic extension and return the type */
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static int v3_check_generic(char **value)
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{
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int gen_type = 0;
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char *p = *value;
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if ((strlen(p) >= 4) && !strncmp(p, "DER:", 4))
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{
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p+=4;
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gen_type = 1;
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}
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else if ((strlen(p) >= 5) && !strncmp(p, "ASN1:", 5))
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{
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p+=5;
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gen_type = 2;
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}
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else
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return 0;
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while (isspace((unsigned char)*p)) p++;
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*value = p;
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return gen_type;
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}
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/* Create a generic extension: for now just handle DER type */
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static X509_EXTENSION *v3_generic_extension(const char *ext, char *value,
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int crit, int gen_type,
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X509V3_CTX *ctx)
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{
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unsigned char *ext_der=NULL;
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long ext_len;
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ASN1_OBJECT *obj=NULL;
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ASN1_OCTET_STRING *oct=NULL;
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X509_EXTENSION *extension=NULL;
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if (!(obj = OBJ_txt2obj(ext, 0)))
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{
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X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_NAME_ERROR);
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ERR_add_error_data(2, "name=", ext);
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goto err;
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}
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if (gen_type == 1)
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ext_der = string_to_hex(value, &ext_len);
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else if (gen_type == 2)
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ext_der = generic_asn1(value, ctx, &ext_len);
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if (ext_der == NULL)
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{
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X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_VALUE_ERROR);
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ERR_add_error_data(2, "value=", value);
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goto err;
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}
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if (!(oct = M_ASN1_OCTET_STRING_new()))
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{
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X509V3err(X509V3_F_V3_GENERIC_EXTENSION,ERR_R_MALLOC_FAILURE);
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goto err;
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}
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oct->data = ext_der;
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oct->length = ext_len;
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ext_der = NULL;
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extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);
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err:
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ASN1_OBJECT_free(obj);
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M_ASN1_OCTET_STRING_free(oct);
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if(ext_der) OPENSSL_free(ext_der);
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return extension;
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}
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static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx, long *ext_len)
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{
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ASN1_TYPE *typ;
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unsigned char *ext_der = NULL;
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typ = ASN1_generate_v3(value, ctx);
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if (typ == NULL)
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return NULL;
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*ext_len = i2d_ASN1_TYPE(typ, &ext_der);
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ASN1_TYPE_free(typ);
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return ext_der;
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}
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/* This is the main function: add a bunch of extensions based on a config file
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* section to an extension STACK.
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*/
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int X509V3_EXT_add_nconf_sk(CONF *conf, X509V3_CTX *ctx, char *section,
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STACK_OF(X509_EXTENSION) **sk)
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{
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X509_EXTENSION *ext;
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STACK_OF(CONF_VALUE) *nval;
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CONF_VALUE *val;
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int i;
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if (!(nval = NCONF_get_section(conf, section))) return 0;
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for (i = 0; i < sk_CONF_VALUE_num(nval); i++)
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{
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val = sk_CONF_VALUE_value(nval, i);
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if (!(ext = X509V3_EXT_nconf(conf, ctx, val->name, val->value)))
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return 0;
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if (sk) X509v3_add_ext(sk, ext, -1);
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X509_EXTENSION_free(ext);
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}
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return 1;
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}
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/* Convenience functions to add extensions to a certificate, CRL and request */
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|
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|
||
|
|
int X509V3_EXT_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
|
||
|
|
X509 *cert)
|
||
|
|
{
|
||
|
|
STACK_OF(X509_EXTENSION) **sk = NULL;
|
||
|
|
if (cert)
|
||
|
|
sk = &cert->cert_info->extensions;
|
||
|
|
return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Same as above but for a CRL */
|
||
|
|
|
||
|
|
int X509V3_EXT_CRL_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
|
||
|
|
X509_CRL *crl)
|
||
|
|
{
|
||
|
|
STACK_OF(X509_EXTENSION) **sk = NULL;
|
||
|
|
if (crl)
|
||
|
|
sk = &crl->crl->extensions;
|
||
|
|
return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Add extensions to certificate request */
|
||
|
|
|
||
|
|
int X509V3_EXT_REQ_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
|
||
|
|
X509_REQ *req)
|
||
|
|
{
|
||
|
|
STACK_OF(X509_EXTENSION) *extlist = NULL, **sk = NULL;
|
||
|
|
int i;
|
||
|
|
if (req)
|
||
|
|
sk = &extlist;
|
||
|
|
i = X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
|
||
|
|
if (!i || !sk)
|
||
|
|
return i;
|
||
|
|
i = X509_REQ_add_extensions(req, extlist);
|
||
|
|
sk_X509_EXTENSION_pop_free(extlist, X509_EXTENSION_free);
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Config database functions */
|
||
|
|
|
||
|
|
char * X509V3_get_string(X509V3_CTX *ctx, char *name, char *section)
|
||
|
|
{
|
||
|
|
if(!ctx->db || !ctx->db_meth || !ctx->db_meth->get_string)
|
||
|
|
{
|
||
|
|
X509V3err(X509V3_F_X509V3_GET_STRING,X509V3_R_OPERATION_NOT_DEFINED);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
if (ctx->db_meth->get_string)
|
||
|
|
return ctx->db_meth->get_string(ctx->db, name, section);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
STACK_OF(CONF_VALUE) * X509V3_get_section(X509V3_CTX *ctx, char *section)
|
||
|
|
{
|
||
|
|
if(!ctx->db || !ctx->db_meth || !ctx->db_meth->get_section)
|
||
|
|
{
|
||
|
|
X509V3err(X509V3_F_X509V3_GET_SECTION,X509V3_R_OPERATION_NOT_DEFINED);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
if (ctx->db_meth->get_section)
|
||
|
|
return ctx->db_meth->get_section(ctx->db, section);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
void X509V3_string_free(X509V3_CTX *ctx, char *str)
|
||
|
|
{
|
||
|
|
if (!str) return;
|
||
|
|
if (ctx->db_meth->free_string)
|
||
|
|
ctx->db_meth->free_string(ctx->db, str);
|
||
|
|
}
|
||
|
|
|
||
|
|
void X509V3_section_free(X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section)
|
||
|
|
{
|
||
|
|
if (!section) return;
|
||
|
|
if (ctx->db_meth->free_section)
|
||
|
|
ctx->db_meth->free_section(ctx->db, section);
|
||
|
|
}
|
||
|
|
|
||
|
|
static char *nconf_get_string(void *db, char *section, char *value)
|
||
|
|
{
|
||
|
|
return NCONF_get_string(db, section, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
static STACK_OF(CONF_VALUE) *nconf_get_section(void *db, char *section)
|
||
|
|
{
|
||
|
|
return NCONF_get_section(db, section);
|
||
|
|
}
|
||
|
|
|
||
|
|
static X509V3_CONF_METHOD nconf_method = {
|
||
|
|
nconf_get_string,
|
||
|
|
nconf_get_section,
|
||
|
|
NULL,
|
||
|
|
NULL
|
||
|
|
};
|
||
|
|
|
||
|
|
void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf)
|
||
|
|
{
|
||
|
|
ctx->db_meth = &nconf_method;
|
||
|
|
ctx->db = conf;
|
||
|
|
}
|
||
|
|
|
||
|
|
void X509V3_set_ctx(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;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Old conf compatibility functions */
|
||
|
|
|
||
|
|
X509_EXTENSION *X509V3_EXT_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
|
||
|
|
char *name, char *value)
|
||
|
|
{
|
||
|
|
CONF ctmp;
|
||
|
|
CONF_set_nconf(&ctmp, conf);
|
||
|
|
return X509V3_EXT_nconf(&ctmp, ctx, name, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* LHASH *conf: Config file */
|
||
|
|
/* char *value: Value */
|
||
|
|
X509_EXTENSION *X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
|
||
|
|
int ext_nid, char *value)
|
||
|
|
{
|
||
|
|
CONF ctmp;
|
||
|
|
CONF_set_nconf(&ctmp, conf);
|
||
|
|
return X509V3_EXT_nconf_nid(&ctmp, ctx, ext_nid, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
static char *conf_lhash_get_string(void *db, char *section, char *value)
|
||
|
|
{
|
||
|
|
return CONF_get_string(db, section, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
static STACK_OF(CONF_VALUE) *conf_lhash_get_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(X509V3_CTX *ctx, LHASH_OF(CONF_VALUE) *lhash)
|
||
|
|
{
|
||
|
|
ctx->db_meth = &conf_lhash_method;
|
||
|
|
ctx->db = lhash;
|
||
|
|
}
|
||
|
|
|
||
|
|
int X509V3_EXT_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
|
||
|
|
char *section, X509 *cert)
|
||
|
|
{
|
||
|
|
CONF ctmp;
|
||
|
|
CONF_set_nconf(&ctmp, conf);
|
||
|
|
return X509V3_EXT_add_nconf(&ctmp, ctx, section, cert);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Same as above but for a CRL */
|
||
|
|
|
||
|
|
int X509V3_EXT_CRL_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
|
||
|
|
char *section, X509_CRL *crl)
|
||
|
|
{
|
||
|
|
CONF ctmp;
|
||
|
|
CONF_set_nconf(&ctmp, conf);
|
||
|
|
return X509V3_EXT_CRL_add_nconf(&ctmp, ctx, section, crl);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Add extensions to certificate request */
|
||
|
|
|
||
|
|
int X509V3_EXT_REQ_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
|
||
|
|
char *section, X509_REQ *req)
|
||
|
|
{
|
||
|
|
CONF ctmp;
|
||
|
|
CONF_set_nconf(&ctmp, conf);
|
||
|
|
return X509V3_EXT_REQ_add_nconf(&ctmp, ctx, section, req);
|
||
|
|
}
|