/* $OpenBSD: x509_bitst.c,v 1.1 2020/06/04 15:19:31 jsing Exp $ */

/* Written by Dr Stephen N Henson (steve@openssl.org) 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).

 *

 */

#include <stdio.h>

#include <string.h>

#include <openssl/conf.h>

#include <openssl/err.h>

#include <openssl/x509v3.h>

static BIT_STRING_BITNAME ns_cert_type_table[] = {

  {0, "SSL Client", "client"},

  {1, "SSL Server", "server"},

  {2, "S/MIME", "email"},

  {3, "Object Signing", "objsign"},

  {4, "Unused", "reserved"},

  {5, "SSL CA", "sslCA"},

  {6, "S/MIME CA", "emailCA"},

  {7, "Object Signing CA", "objCA"},

  {-1, NULL, NULL}

};

static BIT_STRING_BITNAME key_usage_type_table[] = {

  {0, "Digital Signature", "digitalSignature"},

  {1, "Non Repudiation", "nonRepudiation"},

  {2, "Key Encipherment", "keyEncipherment"},

  {3, "Data Encipherment", "dataEncipherment"},

  {4, "Key Agreement", "keyAgreement"},

  {5, "Certificate Sign", "keyCertSign"},

  {6, "CRL Sign", "cRLSign"},

  {7, "Encipher Only", "encipherOnly"},

  {8, "Decipher Only", "decipherOnly"},

  {-1, NULL, NULL}

};

const X509V3_EXT_METHOD v3_nscert = {

  .ext_nid = NID_netscape_cert_type,

  .ext_flags = 0,

  .it = &ASN1_BIT_STRING_it,

  .ext_new = NULL,

  .ext_free = NULL,

  .d2i = NULL,

  .i2d = NULL,

  .i2s = NULL,

  .s2i = NULL,

  .i2v = (X509V3_EXT_I2V)i2v_ASN1_BIT_STRING,

  .v2i = (X509V3_EXT_V2I)v2i_ASN1_BIT_STRING,

  .i2r = NULL,

  .r2i = NULL,

  .usr_data = ns_cert_type_table,

};

const X509V3_EXT_METHOD v3_key_usage = {

  .ext_nid = NID_key_usage,

  .ext_flags = 0,

  .it = &ASN1_BIT_STRING_it,

  .ext_new = NULL,

  .ext_free = NULL,

  .d2i = NULL,

  .i2d = NULL,

  .i2s = NULL,

  .s2i = NULL,

  .i2v = (X509V3_EXT_I2V)i2v_ASN1_BIT_STRING,

  .v2i = (X509V3_EXT_V2I)v2i_ASN1_BIT_STRING,

  .i2r = NULL,

  .r2i = NULL,

  .usr_data = key_usage_type_table,

};

STACK_OF(CONF_VALUE) *

i2v_ASN1_BIT_STRING(X509V3_EXT_METHOD *method, ASN1_BIT_STRING *bits,

    STACK_OF(CONF_VALUE) *ret)

{

  BIT_STRING_BITNAME *bnam;

  STACK_OF(CONF_VALUE) *free_ret = NULL;

  if (ret == NULL) {

    if ((free_ret = ret = sk_CONF_VALUE_new_null()) == NULL)

      return NULL;

  }

  for (bnam = method->usr_data; bnam->lname != NULL; bnam++) {

    if (!ASN1_BIT_STRING_get_bit(bits, bnam->bitnum))

      continue;

    if (!X509V3_add_value(bnam->lname, NULL, &ret))

      goto err;

  }

  return ret;

 err:

  sk_CONF_VALUE_pop_free(free_ret, X509V3_conf_free);

  return NULL;

}

ASN1_BIT_STRING *

v2i_ASN1_BIT_STRING(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,

    STACK_OF(CONF_VALUE) *nval)

{

  CONF_VALUE *val;

  ASN1_BIT_STRING *bs;

  int i;

  BIT_STRING_BITNAME *bnam;

  if (!(bs = ASN1_BIT_STRING_new())) {

    X509V3error(ERR_R_MALLOC_FAILURE);

    return NULL;

  }

  for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {

    val = sk_CONF_VALUE_value(nval, i);

    for (bnam = method->usr_data; bnam->lname; bnam++) {

      if (!strcmp(bnam->sname, val->name) ||

          !strcmp(bnam->lname, val->name) ) {

        if (!ASN1_BIT_STRING_set_bit(bs,

            bnam->bitnum, 1)) {

          X509V3error(ERR_R_MALLOC_FAILURE);

          ASN1_BIT_STRING_free(bs);

          return NULL;

        }

        break;

      }

    }

    if (!bnam->lname) {

      X509V3error(X509V3_R_UNKNOWN_BIT_STRING_ARGUMENT);

      X509V3_conf_err(val);

      ASN1_BIT_STRING_free(bs);

      return NULL;

    }

  }

  return bs;

}