/*

 * 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/obj.h>

#include <openssl/x509v3.h>

#include "internal.h"

static const 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 const 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}};

static STACK_OF(CONF_VALUE) *i2v_ASN1_BIT_STRING(

    const X509V3_EXT_METHOD *method, void *ext, STACK_OF(CONF_VALUE) *ret) {

  const ASN1_BIT_STRING *bits = ext;

  const BIT_STRING_BITNAME *bnam;

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

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

      X509V3_add_value(bnam->lname, NULL, &ret);

    }

  }

  return ret;

}

static void *v2i_ASN1_BIT_STRING(const X509V3_EXT_METHOD *method,

                                 const X509V3_CTX *ctx,

                                 const STACK_OF(CONF_VALUE) *nval) {

  ASN1_BIT_STRING *bs;

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

    return NULL;

  }

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

    const CONF_VALUE *val = sk_CONF_VALUE_value(nval, i);

    const BIT_STRING_BITNAME *bnam;

    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)) {

          ASN1_BIT_STRING_free(bs);

          return NULL;

        }

        break;

      }

    }

    if (!bnam->lname) {

      OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_BIT_STRING_ARGUMENT);

      X509V3_conf_err(val);

      ASN1_BIT_STRING_free(bs);

      return NULL;

    }

  }

  return bs;

}

#define EXT_BITSTRING(nid, table)                                             \

  {                                                                           \

    nid, 0, ASN1_ITEM_ref(ASN1_BIT_STRING), 0, 0, 0, 0, 0, 0,                 \

        i2v_ASN1_BIT_STRING, v2i_ASN1_BIT_STRING, NULL, NULL, (void *)(table) \

  }

const X509V3_EXT_METHOD v3_nscert =

    EXT_BITSTRING(NID_netscape_cert_type, ns_cert_type_table);

const X509V3_EXT_METHOD v3_key_usage =

    EXT_BITSTRING(NID_key_usage, key_usage_type_table);