26a3a48d65
like Malloc, Realloc and especially Free conflict with already existing names on some operating systems or other packages. That is reason enough to change the names of the OpenSSL memory allocation macros to something that has a better chance of being unique, like prepending them with OPENSSL_. This change includes all the name changes needed throughout all C files.
390 lines
12 KiB
C
390 lines
12 KiB
C
/* v3_conf.c */
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/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
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* project 1999.
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*/
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/* ====================================================================
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* Copyright (c) 1999 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_conf(LHASH *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);
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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(X509V3_EXT_METHOD *method, int ext_nid,
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int crit, void *ext_struc);
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/* LHASH *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_conf(LHASH *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);
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ret = do_ext_conf(conf, ctx, OBJ_sn2nid(name), crit, value);
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if(!ret) {
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X509V3err(X509V3_F_X509V3_EXT_CONF,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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/* LHASH *conf: Config file */
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/* char *value: Value */
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X509_EXTENSION *X509V3_EXT_conf_nid(LHASH *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);
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return do_ext_conf(conf, ctx, ext_nid, crit, value);
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}
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/* LHASH *conf: Config file */
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/* char *value: Value */
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static X509_EXTENSION *do_ext_conf(LHASH *conf, X509V3_CTX *ctx, int ext_nid,
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int crit, char *value)
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{
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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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X509V3err(X509V3_F_DO_EXT_CONF,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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X509V3err(X509V3_F_DO_EXT_CONF,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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if(*value == '@') nval = CONF_get_section(conf, value + 1);
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else nval = X509V3_parse_list(value);
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if(!nval) {
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X509V3err(X509V3_F_X509V3_EXT_CONF,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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} else if(method->s2i) {
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if(!(ext_struc = method->s2i(method, ctx, value))) return NULL;
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} else if(method->r2i) {
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if(!ctx->db) {
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X509V3err(X509V3_F_X509V3_EXT_CONF,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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} else {
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X509V3err(X509V3_F_X509V3_EXT_CONF,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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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(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, *p;
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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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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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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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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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char *p = *value;
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if((strlen(p) < 4) || strncmp(p, "DER:,", 4)) return 0;
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p+=4;
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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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/* 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 type)
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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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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(!(ext_der = string_to_hex(value, &ext_len))) {
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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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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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/* This is the main function: add a bunch of extensions based on a config file
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* section
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*/
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int X509V3_EXT_add_conf(LHASH *conf, X509V3_CTX *ctx, char *section,
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X509 *cert)
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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 = CONF_get_section(conf, section))) return 0;
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for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
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val = sk_CONF_VALUE_value(nval, i);
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if(!(ext = X509V3_EXT_conf(conf, ctx, val->name, val->value)))
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return 0;
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if(cert) X509_add_ext(cert, 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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/* Same as above but for a CRL */
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int X509V3_EXT_CRL_add_conf(LHASH *conf, X509V3_CTX *ctx, char *section,
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X509_CRL *crl)
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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 = CONF_get_section(conf, section))) return 0;
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for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
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val = sk_CONF_VALUE_value(nval, i);
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if(!(ext = X509V3_EXT_conf(conf, ctx, val->name, val->value)))
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return 0;
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if(crl) X509_CRL_add_ext(crl, 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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/* Add extensions to certificate request */
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int X509V3_EXT_REQ_add_conf(LHASH *conf, X509V3_CTX *ctx, char *section,
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X509_REQ *req)
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{
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X509_EXTENSION *ext;
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STACK_OF(X509_EXTENSION) *extlist = NULL;
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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 = CONF_get_section(conf, section))) return 0;
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for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
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val = sk_CONF_VALUE_value(nval, i);
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if(!(ext = X509V3_EXT_conf(conf, ctx, val->name, val->value)))
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return 0;
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if(!extlist) extlist = sk_X509_EXTENSION_new_null();
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sk_X509_EXTENSION_push(extlist, ext);
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}
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if(req) i = X509_REQ_add_extensions(req, extlist);
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else i = 1;
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sk_X509_EXTENSION_pop_free(extlist, X509_EXTENSION_free);
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return i;
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}
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/* Config database functions */
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char * X509V3_get_string(X509V3_CTX *ctx, char *name, char *section)
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{
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if(ctx->db_meth->get_string)
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return ctx->db_meth->get_string(ctx->db, name, section);
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return NULL;
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}
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STACK_OF(CONF_VALUE) * X509V3_get_section(X509V3_CTX *ctx, char *section)
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{
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if(ctx->db_meth->get_section)
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return ctx->db_meth->get_section(ctx->db, section);
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return NULL;
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}
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void X509V3_string_free(X509V3_CTX *ctx, char *str)
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{
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if(!str) return;
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if(ctx->db_meth->free_string)
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ctx->db_meth->free_string(ctx->db, str);
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}
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void X509V3_section_free(X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section)
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{
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if(!section) return;
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if(ctx->db_meth->free_section)
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ctx->db_meth->free_section(ctx->db, section);
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}
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static char *conf_lhash_get_string(void *db, char *section, char *value)
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{
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return CONF_get_string(db, section, value);
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}
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static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, char *section)
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{
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return CONF_get_section(db, section);
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}
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static X509V3_CONF_METHOD conf_lhash_method = {
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conf_lhash_get_string,
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conf_lhash_get_section,
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NULL,
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NULL
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};
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void X509V3_set_conf_lhash(X509V3_CTX *ctx, LHASH *lhash)
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{
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ctx->db_meth = &conf_lhash_method;
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ctx->db = lhash;
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}
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void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subj, X509_REQ *req,
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X509_CRL *crl, int flags)
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{
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ctx->issuer_cert = issuer;
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ctx->subject_cert = subj;
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ctx->crl = crl;
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ctx->subject_req = req;
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ctx->flags = flags;
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}
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