/*

 * Copyright 2000-2021 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/conf.h>

#include <openssl/asn1.h>

#include <openssl/ocsp.h>

#include "ocsp_local.h"

#include <openssl/x509v3.h>

#include "../x509/ext_dat.h"

/*

 * OCSP extensions and a couple of CRL entry extensions

 */

static int i2r_ocsp_crlid(const X509V3_EXT_METHOD *method, void *nonce,

                          BIO *out, int indent);

static int i2r_ocsp_acutoff(const X509V3_EXT_METHOD *method, void *nonce,

                            BIO *out, int indent);

static void *ocsp_nonce_new(void);

static int i2d_ocsp_nonce(const void *a, unsigned char **pp);

static void *d2i_ocsp_nonce(void *a, const unsigned char **pp, long length);

static void ocsp_nonce_free(void *a);

static int i2r_ocsp_nonce(const X509V3_EXT_METHOD *method, void *nonce,

                          BIO *out, int indent);

static int i2r_ocsp_nocheck(const X509V3_EXT_METHOD *method,

                            void *nocheck, BIO *out, int indent);

static void *s2i_ocsp_nocheck(const X509V3_EXT_METHOD *method,

                              X509V3_CTX *ctx, const char *str);

static int i2r_ocsp_serviceloc(const X509V3_EXT_METHOD *method, void *in,

                               BIO *bp, int ind);

const X509V3_EXT_METHOD ossl_v3_ocsp_crlid = {

    NID_id_pkix_OCSP_CrlID, 0, ASN1_ITEM_ref(OCSP_CRLID),

    0, 0, 0, 0,

    0, 0,

    0, 0,

    i2r_ocsp_crlid, 0,

    NULL

};

const X509V3_EXT_METHOD ossl_v3_ocsp_acutoff = {

    NID_id_pkix_OCSP_archiveCutoff, 0, ASN1_ITEM_ref(ASN1_GENERALIZEDTIME),

    0, 0, 0, 0,

    0, 0,

    0, 0,

    i2r_ocsp_acutoff, 0,

    NULL

};

const X509V3_EXT_METHOD ossl_v3_ocsp_nonce = {

    NID_id_pkix_OCSP_Nonce, 0, NULL,

    ocsp_nonce_new,

    ocsp_nonce_free,

    d2i_ocsp_nonce,

    i2d_ocsp_nonce,

    0, 0,

    0, 0,

    i2r_ocsp_nonce, 0,

    NULL

};

const X509V3_EXT_METHOD ossl_v3_ocsp_nocheck = {

    NID_id_pkix_OCSP_noCheck, 0, ASN1_ITEM_ref(ASN1_NULL),

    0, 0, 0, 0,

    0, s2i_ocsp_nocheck,

    0, 0,

    i2r_ocsp_nocheck, 0,

    NULL

};

const X509V3_EXT_METHOD ossl_v3_ocsp_serviceloc = {

    NID_id_pkix_OCSP_serviceLocator, 0, ASN1_ITEM_ref(OCSP_SERVICELOC),

    0, 0, 0, 0,

    0, 0,

    0, 0,

    i2r_ocsp_serviceloc, 0,

    NULL

};

static int i2r_ocsp_crlid(const X509V3_EXT_METHOD *method, void *in, BIO *bp,

                          int ind)

{

    OCSP_CRLID *a = in;

    if (a->crlUrl) {

        if (BIO_printf(bp, "%*scrlUrl: ", ind, "") <= 0)

            goto err;

        if (!ASN1_STRING_print(bp, (ASN1_STRING *)a->crlUrl))

            goto err;

        if (BIO_write(bp, "\n", 1) <= 0)

            goto err;

    }

    if (a->crlNum) {

        if (BIO_printf(bp, "%*scrlNum: ", ind, "") <= 0)

            goto err;

        if (i2a_ASN1_INTEGER(bp, a->crlNum) <= 0)

            goto err;

        if (BIO_write(bp, "\n", 1) <= 0)

            goto err;

    }

    if (a->crlTime) {

        if (BIO_printf(bp, "%*scrlTime: ", ind, "") <= 0)

            goto err;

        if (!ASN1_GENERALIZEDTIME_print(bp, a->crlTime))

            goto err;

        if (BIO_write(bp, "\n", 1) <= 0)

            goto err;

    }

    return 1;

 err:

    return 0;

}

static int i2r_ocsp_acutoff(const X509V3_EXT_METHOD *method, void *cutoff,

                            BIO *bp, int ind)

{

    if (BIO_printf(bp, "%*s", ind, "") <= 0)

        return 0;

    if (!ASN1_GENERALIZEDTIME_print(bp, cutoff))

        return 0;

    return 1;

}

/*

 * OCSP nonce. This is needs special treatment because it doesn't have an

 * ASN1 encoding at all: it just contains arbitrary data.

 */

static void *ocsp_nonce_new(void)

{

    return ASN1_OCTET_STRING_new();

}

static int i2d_ocsp_nonce(const void *a, unsigned char **pp)

{

    const ASN1_OCTET_STRING *os = a;

    if (pp) {

        memcpy(*pp, os->data, os->length);

        *pp += os->length;

    }

    return os->length;

}

static void *d2i_ocsp_nonce(void *a, const unsigned char **pp, long length)

{

    ASN1_OCTET_STRING *os, **pos;

    pos = a;

    if (pos == NULL || *pos == NULL) {

        os = ASN1_OCTET_STRING_new();

        if (os == NULL)

            goto err;

    } else {

        os = *pos;

    }

    if (!ASN1_OCTET_STRING_set(os, *pp, length))

        goto err;

    *pp += length;

    if (pos)

        *pos = os;

    return os;

 err:

    if ((pos == NULL) || (*pos != os))

        ASN1_OCTET_STRING_free(os);

    ERR_raise(ERR_LIB_OCSP, ERR_R_ASN1_LIB);

    return NULL;

}

static void ocsp_nonce_free(void *a)

{

    ASN1_OCTET_STRING_free(a);

}

static int i2r_ocsp_nonce(const X509V3_EXT_METHOD *method, void *nonce,

                          BIO *out, int indent)

{

    if (BIO_printf(out, "%*s", indent, "") <= 0)

        return 0;

    if (i2a_ASN1_STRING(out, nonce, V_ASN1_OCTET_STRING) <= 0)

        return 0;

    return 1;

}

/* Nocheck is just a single NULL. Don't print anything and always set it */

static int i2r_ocsp_nocheck(const X509V3_EXT_METHOD *method, void *nocheck,

                            BIO *out, int indent)

{

    return 1;

}

static void *s2i_ocsp_nocheck(const X509V3_EXT_METHOD *method,

                              X509V3_CTX *ctx, const char *str)

{

    return ASN1_NULL_new();

}

static int i2r_ocsp_serviceloc(const X509V3_EXT_METHOD *method, void *in,

                               BIO *bp, int ind)

{

    int i;

    OCSP_SERVICELOC *a = in;

    ACCESS_DESCRIPTION *ad;

    if (BIO_printf(bp, "%*sIssuer: ", ind, "") <= 0)

        goto err;

    if (X509_NAME_print_ex(bp, a->issuer, 0, XN_FLAG_ONELINE) <= 0)

        goto err;

    for (i = 0; i < sk_ACCESS_DESCRIPTION_num(a->locator); i++) {

        ad = sk_ACCESS_DESCRIPTION_value(a->locator, i);

        if (BIO_printf(bp, "\n%*s", (2 * ind), "") <= 0)

            goto err;

        if (i2a_ASN1_OBJECT(bp, ad->method) <= 0)

            goto err;

        if (BIO_puts(bp, " - ") <= 0)

            goto err;

        if (GENERAL_NAME_print(bp, ad->location) <= 0)

            goto err;

    }

    return 1;

 err:

    return 0;

}