/*

 * Copyright 1999-2024 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include "internal/cryptlib.h"

#include <openssl/asn1t.h>

#include <openssl/conf.h>

#include <openssl/x509v3.h>

#include "x509_local.h"

#include "ext_dat.h"

static STACK_OF(CONF_VALUE) *i2v_OSSL_BASIC_ATTR_CONSTRAINTS(

    X509V3_EXT_METHOD *method,

    OSSL_BASIC_ATTR_CONSTRAINTS *battcons,

    STACK_OF(CONF_VALUE)

    *extlist);

static OSSL_BASIC_ATTR_CONSTRAINTS *v2i_OSSL_BASIC_ATTR_CONSTRAINTS(

    X509V3_EXT_METHOD *method,

    X509V3_CTX *ctx,

    STACK_OF(CONF_VALUE) *values);

const X509V3_EXT_METHOD ossl_v3_battcons = {

    NID_basic_att_constraints, 0,

    ASN1_ITEM_ref(OSSL_BASIC_ATTR_CONSTRAINTS),

    0, 0, 0, 0,

    0, 0,

    (X509V3_EXT_I2V) i2v_OSSL_BASIC_ATTR_CONSTRAINTS,

    (X509V3_EXT_V2I)v2i_OSSL_BASIC_ATTR_CONSTRAINTS,

    NULL, NULL,

    NULL

};

ASN1_SEQUENCE(OSSL_BASIC_ATTR_CONSTRAINTS) = {

    ASN1_OPT(OSSL_BASIC_ATTR_CONSTRAINTS, authority, ASN1_FBOOLEAN),

    ASN1_OPT(OSSL_BASIC_ATTR_CONSTRAINTS, pathlen, ASN1_INTEGER)

} ASN1_SEQUENCE_END(OSSL_BASIC_ATTR_CONSTRAINTS)

IMPLEMENT_ASN1_FUNCTIONS(OSSL_BASIC_ATTR_CONSTRAINTS)

static STACK_OF(CONF_VALUE) *i2v_OSSL_BASIC_ATTR_CONSTRAINTS(

    X509V3_EXT_METHOD *method,

    OSSL_BASIC_ATTR_CONSTRAINTS *battcons,

    STACK_OF(CONF_VALUE) *extlist)

{

    X509V3_add_value_bool("authority", battcons->authority, &extlist);

    X509V3_add_value_int("pathlen", battcons->pathlen, &extlist);

    return extlist;

}

static OSSL_BASIC_ATTR_CONSTRAINTS *v2i_OSSL_BASIC_ATTR_CONSTRAINTS(

    X509V3_EXT_METHOD *method,

    X509V3_CTX *ctx,

    STACK_OF(CONF_VALUE) *values)

{

    OSSL_BASIC_ATTR_CONSTRAINTS *battcons = NULL;

    CONF_VALUE *val;

    int i;

    if ((battcons = OSSL_BASIC_ATTR_CONSTRAINTS_new()) == NULL) {

        ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);

        return NULL;

    }

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

        val = sk_CONF_VALUE_value(values, i);

        if (strcmp(val->name, "authority") == 0) {

            if (!X509V3_get_value_bool(val, &battcons->authority))

                goto err;

        } else if (strcmp(val->name, "pathlen") == 0) {

            if (!X509V3_get_value_int(val, &battcons->pathlen))

                goto err;

        } else {

            ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_NAME);

            X509V3_conf_add_error_name_value(val);

            goto err;

        }

    }

    return battcons;

 err:

    OSSL_BASIC_ATTR_CONSTRAINTS_free(battcons);

    return NULL;

}