/* $OpenBSD: x509_pmaps.c,v 1.1 2020/06/04 15:19:32 jsing Exp $ */

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

 * project.

 */

/* ====================================================================

 * Copyright (c) 2003 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 <openssl/asn1t.h>

#include <openssl/conf.h>

#include <openssl/err.h>

#include <openssl/x509v3.h>

static void *v2i_POLICY_MAPPINGS(const X509V3_EXT_METHOD *method,

    X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);

static STACK_OF(CONF_VALUE) *i2v_POLICY_MAPPINGS(

    const X509V3_EXT_METHOD *method, void *pmps, STACK_OF(CONF_VALUE) *extlist);

const X509V3_EXT_METHOD v3_policy_mappings = {

  .ext_nid = NID_policy_mappings,

  .ext_flags = 0,

  .it = &POLICY_MAPPINGS_it,

  .ext_new = NULL,

  .ext_free = NULL,

  .d2i = NULL,

  .i2d = NULL,

  .i2s = NULL,

  .s2i = NULL,

  .i2v = i2v_POLICY_MAPPINGS,

  .v2i = v2i_POLICY_MAPPINGS,

  .i2r = NULL,

  .r2i = NULL,

  .usr_data = NULL,

};

static const ASN1_TEMPLATE POLICY_MAPPING_seq_tt[] = {

  {

    .flags = 0,

    .tag = 0,

    .offset = offsetof(POLICY_MAPPING, issuerDomainPolicy),

    .field_name = "issuerDomainPolicy",

    .item = &ASN1_OBJECT_it,

  },

  {

    .flags = 0,

    .tag = 0,

    .offset = offsetof(POLICY_MAPPING, subjectDomainPolicy),

    .field_name = "subjectDomainPolicy",

    .item = &ASN1_OBJECT_it,

  },

};

const ASN1_ITEM POLICY_MAPPING_it = {

  .itype = ASN1_ITYPE_SEQUENCE,

  .utype = V_ASN1_SEQUENCE,

  .templates = POLICY_MAPPING_seq_tt,

  .tcount = sizeof(POLICY_MAPPING_seq_tt) / sizeof(ASN1_TEMPLATE),

  .funcs = NULL,

  .size = sizeof(POLICY_MAPPING),

  .sname = "POLICY_MAPPING",

};

static const ASN1_TEMPLATE POLICY_MAPPINGS_item_tt = {

  .flags = ASN1_TFLG_SEQUENCE_OF,

  .tag = 0,

  .offset = 0,

  .field_name = "POLICY_MAPPINGS",

  .item = &POLICY_MAPPING_it,

};

const ASN1_ITEM POLICY_MAPPINGS_it = {

  .itype = ASN1_ITYPE_PRIMITIVE,

  .utype = -1,

  .templates = &POLICY_MAPPINGS_item_tt,

  .tcount = 0,

  .funcs = NULL,

  .size = 0,

  .sname = "POLICY_MAPPINGS",

};

POLICY_MAPPING *

POLICY_MAPPING_new(void)

{

  return (POLICY_MAPPING*)ASN1_item_new(&POLICY_MAPPING_it);

}

void

POLICY_MAPPING_free(POLICY_MAPPING *a)

{

  ASN1_item_free((ASN1_VALUE *)a, &POLICY_MAPPING_it);

}

static STACK_OF(CONF_VALUE) *

i2v_POLICY_MAPPINGS(const X509V3_EXT_METHOD *method, void *a,

    STACK_OF(CONF_VALUE) *extlist)

{

  STACK_OF(CONF_VALUE) *free_extlist = NULL;

  POLICY_MAPPINGS *pmaps = a;

  POLICY_MAPPING *pmap;

  char issuer[80], subject[80];

  int i;

  if (extlist == NULL) {

    if ((free_extlist = extlist = sk_CONF_VALUE_new_null()) == NULL)

      return NULL;

  }

  for (i = 0; i < sk_POLICY_MAPPING_num(pmaps); i++) {

    if ((pmap = sk_POLICY_MAPPING_value(pmaps, i)) == NULL)

      goto err;

    if (!i2t_ASN1_OBJECT(issuer, sizeof issuer,

        pmap->issuerDomainPolicy))

      goto err;

    if (!i2t_ASN1_OBJECT(subject, sizeof subject,

        pmap->subjectDomainPolicy))

      goto err;

    if (!X509V3_add_value(issuer, subject, &extlist))

      goto err;

  }

  return extlist;

 err:

  sk_CONF_VALUE_pop_free(free_extlist, X509V3_conf_free);

  return NULL;

}

static void *

v2i_POLICY_MAPPINGS(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,

    STACK_OF(CONF_VALUE) *nval)

{

  POLICY_MAPPINGS *pmaps = NULL;

  POLICY_MAPPING *pmap = NULL;

  ASN1_OBJECT *obj1 = NULL, *obj2 = NULL;

  CONF_VALUE *val;

  int i, rc;

  if (!(pmaps = sk_POLICY_MAPPING_new_null())) {

    X509V3error(ERR_R_MALLOC_FAILURE);

    return NULL;

  }

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

    val = sk_CONF_VALUE_value(nval, i);

    if (!val->value || !val->name) {

      rc = X509V3_R_INVALID_OBJECT_IDENTIFIER;

      goto err;

    }

    obj1 = OBJ_txt2obj(val->name, 0);

    obj2 = OBJ_txt2obj(val->value, 0);

    if (!obj1 || !obj2) {

      rc = X509V3_R_INVALID_OBJECT_IDENTIFIER;

      goto err;

    }

    pmap = POLICY_MAPPING_new();

    if (!pmap) {

          rc = ERR_R_MALLOC_FAILURE;

      goto err;

    }

    pmap->issuerDomainPolicy = obj1;

    pmap->subjectDomainPolicy = obj2;

    obj1 = obj2 = NULL;

    if (sk_POLICY_MAPPING_push(pmaps, pmap) == 0) {

          rc = ERR_R_MALLOC_FAILURE;

      goto err;

    }

    pmap = NULL;

  }

  return pmaps;

err:

  sk_POLICY_MAPPING_pop_free(pmaps, POLICY_MAPPING_free);

  X509V3error(rc);

  if (rc == X509V3_R_INVALID_OBJECT_IDENTIFIER)

    X509V3_conf_err(val);

  ASN1_OBJECT_free(obj1);

  ASN1_OBJECT_free(obj2);

  POLICY_MAPPING_free(pmap);

  return NULL;

}