/*

 * Copyright 2020-2024 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 <stdio.h>

#include "internal/cryptlib.h"

#include <openssl/conf.h>

#include <openssl/asn1.h>

#include <openssl/asn1t.h>

#include <openssl/x509v3.h>

#include "ext_dat.h"

/*

 * Issuer Sign Tool (1.2.643.100.112) The name of the tool used to signs the subject (ASN1_SEQUENCE)

 * This extension is required to obtain the status of a qualified certificate at Russian Federation.

 * RFC-style description is available here: https://tools.ietf.org/html/draft-deremin-rfc4491-bis-04#section-5

 * Russian Federal Law 63 "Digital Sign" is available here:  http://www.consultant.ru/document/cons_doc_LAW_112701/

 */

ASN1_SEQUENCE(ISSUER_SIGN_TOOL) = {

        ASN1_SIMPLE(ISSUER_SIGN_TOOL, signTool, ASN1_UTF8STRING),

        ASN1_SIMPLE(ISSUER_SIGN_TOOL, cATool, ASN1_UTF8STRING),

        ASN1_SIMPLE(ISSUER_SIGN_TOOL, signToolCert, ASN1_UTF8STRING),

        ASN1_SIMPLE(ISSUER_SIGN_TOOL, cAToolCert, ASN1_UTF8STRING)

} ASN1_SEQUENCE_END(ISSUER_SIGN_TOOL)

IMPLEMENT_ASN1_FUNCTIONS(ISSUER_SIGN_TOOL)

static ISSUER_SIGN_TOOL *v2i_issuer_sign_tool(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,

                        STACK_OF(CONF_VALUE) *nval)

{

    ISSUER_SIGN_TOOL *ist = ISSUER_SIGN_TOOL_new();

    int i;

    if (ist == NULL) {

        ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);

        return NULL;

    }

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

        CONF_VALUE *cnf = sk_CONF_VALUE_value(nval, i);

        if (cnf == NULL) {

            continue;

        }

        if (strcmp(cnf->name, "signTool") == 0) {

            ist->signTool = ASN1_UTF8STRING_new();

            if (ist->signTool == NULL

                || cnf->value == NULL

                || !ASN1_STRING_set(ist->signTool, cnf->value, strlen(cnf->value))) {

                ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);

                goto err;

            }

        } else if (strcmp(cnf->name, "cATool") == 0) {

            ist->cATool = ASN1_UTF8STRING_new();

            if (ist->cATool == NULL

                || cnf->value == NULL

                || !ASN1_STRING_set(ist->cATool, cnf->value, strlen(cnf->value))) {

                ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);

                goto err;

            }

        } else if (strcmp(cnf->name, "signToolCert") == 0) {

            ist->signToolCert = ASN1_UTF8STRING_new();

            if (ist->signToolCert == NULL

                || cnf->value == NULL

                || !ASN1_STRING_set(ist->signToolCert, cnf->value, strlen(cnf->value))) {

                ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);

                goto err;

            }

        } else if (strcmp(cnf->name, "cAToolCert") == 0) {

            ist->cAToolCert = ASN1_UTF8STRING_new();

            if (ist->cAToolCert == NULL

                || cnf->value == NULL

                || !ASN1_STRING_set(ist->cAToolCert, cnf->value, strlen(cnf->value))) {

                ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);

                goto err;

            }

        } else {

            ERR_raise(ERR_LIB_X509V3, ERR_R_PASSED_INVALID_ARGUMENT);

            goto err;

        }

    }

    return ist;

err:

    ISSUER_SIGN_TOOL_free(ist);

    return NULL;

}

static int i2r_issuer_sign_tool(X509V3_EXT_METHOD *method,

                                 ISSUER_SIGN_TOOL *ist, BIO *out,

                                 int indent)

{

    int new_line = 0;

    if (ist == NULL) {

        ERR_raise(ERR_LIB_X509V3, ERR_R_PASSED_INVALID_ARGUMENT);

        return 0;

    }

    if (ist->signTool != NULL) {

        BIO_printf(out, "%*ssignTool    : ", indent, "");

        BIO_write(out, ist->signTool->data, ist->signTool->length);

        new_line = 1;

    }

    if (ist->cATool != NULL) {

        if (new_line == 1) {

            BIO_write(out, "\n", 1);

        }

        BIO_printf(out, "%*scATool      : ", indent, "");

        BIO_write(out, ist->cATool->data, ist->cATool->length);

        new_line = 1;

    }

    if (ist->signToolCert != NULL) {

        if (new_line == 1) {

            BIO_write(out, "\n", 1);

        }

        BIO_printf(out, "%*ssignToolCert: ", indent, "");

        BIO_write(out, ist->signToolCert->data, ist->signToolCert->length);

        new_line = 1;

    }

    if (ist->cAToolCert != NULL) {

        if (new_line == 1) {

            BIO_write(out, "\n", 1);

        }

        BIO_printf(out, "%*scAToolCert  : ", indent, "");

        BIO_write(out, ist->cAToolCert->data, ist->cAToolCert->length);

        new_line = 1;

    }

    return 1;

}

const X509V3_EXT_METHOD ossl_v3_issuer_sign_tool = {

    NID_issuerSignTool,                   /* nid */

    X509V3_EXT_MULTILINE,                 /* flags */

    ASN1_ITEM_ref(ISSUER_SIGN_TOOL),      /* template */

    0, 0, 0, 0,                           /* old functions, ignored */

    0,                                    /* i2s */

    0,                                    /* s2i */

    0,                                    /* i2v */

    (X509V3_EXT_V2I)v2i_issuer_sign_tool, /* v2i */

    (X509V3_EXT_I2R)i2r_issuer_sign_tool, /* i2r */

    0,                                    /* r2i */

    NULL                                  /* extension-specific data */

};