/* v3_pcons.c */

/*

 * 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 "cryptlib.h"

#include <openssl/asn1.h>

#include <openssl/asn1t.h>

#include <openssl/conf.h>

#include <openssl/x509v3.h>

static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD

                                                    *method, void *bcons, STACK_OF(CONF_VALUE)

                                                    *extlist);

static void *v2i_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD *method,

                                    X509V3_CTX *ctx,

                                    STACK_OF(CONF_VALUE) *values);

const X509V3_EXT_METHOD v3_policy_constraints = {

    NID_policy_constraints, 0,

    ASN1_ITEM_ref(POLICY_CONSTRAINTS),

    0, 0, 0, 0,

    0, 0,

    i2v_POLICY_CONSTRAINTS,

    v2i_POLICY_CONSTRAINTS,

    NULL, NULL,

    NULL

};

ASN1_SEQUENCE(POLICY_CONSTRAINTS) = {

        ASN1_IMP_OPT(POLICY_CONSTRAINTS, requireExplicitPolicy, ASN1_INTEGER,0),

        ASN1_IMP_OPT(POLICY_CONSTRAINTS, inhibitPolicyMapping, ASN1_INTEGER,1)

} ASN1_SEQUENCE_END(POLICY_CONSTRAINTS)

IMPLEMENT_ASN1_ALLOC_FUNCTIONS(POLICY_CONSTRAINTS)

static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD

                                                    *method, void *a, STACK_OF(CONF_VALUE)

                                                    *extlist)

{

    POLICY_CONSTRAINTS *pcons = a;

    X509V3_add_value_int("Require Explicit Policy",

                         pcons->requireExplicitPolicy, &extlist);

    X509V3_add_value_int("Inhibit Policy Mapping",

                         pcons->inhibitPolicyMapping, &extlist);

    return extlist;

}

static void *v2i_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD *method,

                                    X509V3_CTX *ctx,

                                    STACK_OF(CONF_VALUE) *values)

{

    POLICY_CONSTRAINTS *pcons = NULL;

    CONF_VALUE *val;

    int i;

    if (!(pcons = POLICY_CONSTRAINTS_new())) {

        X509V3err(X509V3_F_V2I_POLICY_CONSTRAINTS, ERR_R_MALLOC_FAILURE);

        return NULL;

    }

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

        val = sk_CONF_VALUE_value(values, i);

        if (!strcmp(val->name, "requireExplicitPolicy")) {

            if (!X509V3_get_value_int(val, &pcons->requireExplicitPolicy))

                goto err;

        } else if (!strcmp(val->name, "inhibitPolicyMapping")) {

            if (!X509V3_get_value_int(val, &pcons->inhibitPolicyMapping))

                goto err;

        } else {

            X509V3err(X509V3_F_V2I_POLICY_CONSTRAINTS, X509V3_R_INVALID_NAME);

            X509V3_conf_err(val);

            goto err;

        }

    }

    if (!pcons->inhibitPolicyMapping && !pcons->requireExplicitPolicy) {

        X509V3err(X509V3_F_V2I_POLICY_CONSTRAINTS,

                  X509V3_R_ILLEGAL_EMPTY_EXTENSION);

        goto err;

    }

    return pcons;

 err:

    POLICY_CONSTRAINTS_free(pcons);

    return NULL;

}