/*

 * Copyright 2023 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 <stdio.h>

#include "internal/cryptlib.h"

#include <openssl/asn1.h>

#include <openssl/asn1t.h>

#include <openssl/x509v3.h>

#include "ext_dat.h"

static int i2r_SINGLE_USE(X509V3_EXT_METHOD *method,

                        void *su, BIO *out,

                        int indent)

{

    return 1;

}

static void *r2i_SINGLE_USE(X509V3_EXT_METHOD *method,

                          X509V3_CTX *ctx, const char *value)

{

    return ASN1_NULL_new();

}

static char *i2s_SINGLE_USE(const X509V3_EXT_METHOD *method, void *val)

{

    return OPENSSL_strdup("NULL");

}

static void *s2i_SINGLE_USE(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx, const char *str)

{

    return ASN1_NULL_new();

}

/*

 * The singleUse X.509v3 extension is defined in ITU Recommendation X.509

 * (2019), Section 17.1.2.5. See: https://www.itu.int/rec/T-REC-X.509-201910-I/en.

 */

const X509V3_EXT_METHOD ossl_v3_single_use = {

    NID_single_use, 0, ASN1_ITEM_ref(ASN1_NULL),

    0, 0, 0, 0,

    (X509V3_EXT_I2S)i2s_SINGLE_USE,

    (X509V3_EXT_S2I)s2i_SINGLE_USE,

    0, 0,

    (X509V3_EXT_I2R)i2r_SINGLE_USE,

    (X509V3_EXT_R2I)r2i_SINGLE_USE,

    NULL

};