/* $OpenBSD: x509_info.c,v 1.6 2025/05/10 05:54:39 tb Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project 1999.
 */
/* ====================================================================
 * Copyright (c) 1999 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 <string.h>

#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/conf.h>
#include <openssl/x509v3.h>

#include "err_local.h"

static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_INFO_ACCESS(
    X509V3_EXT_METHOD *method, AUTHORITY_INFO_ACCESS *ainfo,
    STACK_OF(CONF_VALUE) *ret);
static AUTHORITY_INFO_ACCESS *v2i_AUTHORITY_INFO_ACCESS(
    X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);

static const X509V3_EXT_METHOD x509v3_ext_info_access = {
        .ext_nid = NID_info_access,
        .ext_flags = X509V3_EXT_MULTILINE,
        .it = &AUTHORITY_INFO_ACCESS_it,
        .ext_new = NULL,
        .ext_free = NULL,
        .d2i = NULL,
        .i2d = NULL,
        .i2s = NULL,
        .s2i = NULL,
        .i2v = (X509V3_EXT_I2V)i2v_AUTHORITY_INFO_ACCESS,
        .v2i = (X509V3_EXT_V2I)v2i_AUTHORITY_INFO_ACCESS,
        .i2r = NULL,
        .r2i = NULL,
        .usr_data = NULL,
};

const X509V3_EXT_METHOD *
x509v3_ext_method_info_access(void)
{
        return &x509v3_ext_info_access;
}

static const X509V3_EXT_METHOD x509v3_ext_sinfo_access = {
        .ext_nid = NID_sinfo_access,
        .ext_flags = X509V3_EXT_MULTILINE,
        .it = &AUTHORITY_INFO_ACCESS_it,
        .ext_new = NULL,
        .ext_free = NULL,
        .d2i = NULL,
        .i2d = NULL,
        .i2s = NULL,
        .s2i = NULL,
        .i2v = (X509V3_EXT_I2V)i2v_AUTHORITY_INFO_ACCESS,
        .v2i = (X509V3_EXT_V2I)v2i_AUTHORITY_INFO_ACCESS,
        .i2r = NULL,
        .r2i = NULL,
        .usr_data = NULL,
};

const X509V3_EXT_METHOD *
x509v3_ext_method_sinfo_access(void)
{
        return &x509v3_ext_sinfo_access;
}

static const ASN1_TEMPLATE ACCESS_DESCRIPTION_seq_tt[] = {
        {
                .flags = 0,
                .tag = 0,
                .offset = offsetof(ACCESS_DESCRIPTION, method),
                .field_name = "method",
                .item = &ASN1_OBJECT_it,
        },
        {
                .flags = 0,
                .tag = 0,
                .offset = offsetof(ACCESS_DESCRIPTION, location),
                .field_name = "location",
                .item = &GENERAL_NAME_it,
        },
};

const ASN1_ITEM ACCESS_DESCRIPTION_it = {
        .itype = ASN1_ITYPE_SEQUENCE,
        .utype = V_ASN1_SEQUENCE,
        .templates = ACCESS_DESCRIPTION_seq_tt,
        .tcount = sizeof(ACCESS_DESCRIPTION_seq_tt) / sizeof(ASN1_TEMPLATE),
        .funcs = NULL,
        .size = sizeof(ACCESS_DESCRIPTION),
        .sname = "ACCESS_DESCRIPTION",
};
LCRYPTO_ALIAS(ACCESS_DESCRIPTION_it);


ACCESS_DESCRIPTION *
d2i_ACCESS_DESCRIPTION(ACCESS_DESCRIPTION **a, const unsigned char **in, long len)
{
        return (ACCESS_DESCRIPTION *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
            &ACCESS_DESCRIPTION_it);
}
LCRYPTO_ALIAS(d2i_ACCESS_DESCRIPTION);

int
i2d_ACCESS_DESCRIPTION(ACCESS_DESCRIPTION *a, unsigned char **out)
{
        return ASN1_item_i2d((ASN1_VALUE *)a, out, &ACCESS_DESCRIPTION_it);
}
LCRYPTO_ALIAS(i2d_ACCESS_DESCRIPTION);

ACCESS_DESCRIPTION *
ACCESS_DESCRIPTION_new(void)
{
        return (ACCESS_DESCRIPTION *)ASN1_item_new(&ACCESS_DESCRIPTION_it);
}
LCRYPTO_ALIAS(ACCESS_DESCRIPTION_new);

void
ACCESS_DESCRIPTION_free(ACCESS_DESCRIPTION *a)
{
        ASN1_item_free((ASN1_VALUE *)a, &ACCESS_DESCRIPTION_it);
}
LCRYPTO_ALIAS(ACCESS_DESCRIPTION_free);

static const ASN1_TEMPLATE AUTHORITY_INFO_ACCESS_item_tt = {
        .flags = ASN1_TFLG_SEQUENCE_OF,
        .tag = 0,
        .offset = 0,
        .field_name = "GeneralNames",
        .item = &ACCESS_DESCRIPTION_it,
};

const ASN1_ITEM AUTHORITY_INFO_ACCESS_it = {
        .itype = ASN1_ITYPE_PRIMITIVE,
        .utype = -1,
        .templates = &AUTHORITY_INFO_ACCESS_item_tt,
        .tcount = 0,
        .funcs = NULL,
        .size = 0,
        .sname = "AUTHORITY_INFO_ACCESS",
};
LCRYPTO_ALIAS(AUTHORITY_INFO_ACCESS_it);


AUTHORITY_INFO_ACCESS *
d2i_AUTHORITY_INFO_ACCESS(AUTHORITY_INFO_ACCESS **a, const unsigned char **in, long len)
{
        return (AUTHORITY_INFO_ACCESS *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
            &AUTHORITY_INFO_ACCESS_it);
}
LCRYPTO_ALIAS(d2i_AUTHORITY_INFO_ACCESS);

int
i2d_AUTHORITY_INFO_ACCESS(AUTHORITY_INFO_ACCESS *a, unsigned char **out)
{
        return ASN1_item_i2d((ASN1_VALUE *)a, out, &AUTHORITY_INFO_ACCESS_it);
}
LCRYPTO_ALIAS(i2d_AUTHORITY_INFO_ACCESS);

AUTHORITY_INFO_ACCESS *
AUTHORITY_INFO_ACCESS_new(void)
{
        return (AUTHORITY_INFO_ACCESS *)ASN1_item_new(&AUTHORITY_INFO_ACCESS_it);
}
LCRYPTO_ALIAS(AUTHORITY_INFO_ACCESS_new);

void
AUTHORITY_INFO_ACCESS_free(AUTHORITY_INFO_ACCESS *a)
{
        ASN1_item_free((ASN1_VALUE *)a, &AUTHORITY_INFO_ACCESS_it);
}
LCRYPTO_ALIAS(AUTHORITY_INFO_ACCESS_free);

static STACK_OF(CONF_VALUE) *
i2v_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD *method,
    AUTHORITY_INFO_ACCESS *ainfo, STACK_OF(CONF_VALUE) *ret)
{
        ACCESS_DESCRIPTION *desc;
        CONF_VALUE *vtmp;
        STACK_OF(CONF_VALUE) *free_ret = NULL;
        char objtmp[80], *ntmp;
        int i;

        if (ret == NULL) {
                if ((free_ret = ret = sk_CONF_VALUE_new_null()) == NULL)
                        return NULL;
        }

        for (i = 0; i < sk_ACCESS_DESCRIPTION_num(ainfo); i++) {
                if ((desc = sk_ACCESS_DESCRIPTION_value(ainfo, i)) == NULL)
                        goto err;
                if ((ret = i2v_GENERAL_NAME(method, desc->location,
                    ret)) == NULL)
                        goto err;
                if ((vtmp = sk_CONF_VALUE_value(ret, i)) == NULL)
                        goto err;
                if (!i2t_ASN1_OBJECT(objtmp, sizeof objtmp, desc->method))
                        goto err;
                if (asprintf(&ntmp, "%s - %s", objtmp, vtmp->name) == -1) {
                        ntmp = NULL;
                        X509V3error(ERR_R_MALLOC_FAILURE);
                        goto err;
                }
                free(vtmp->name);
                vtmp->name = ntmp;
        }

        return ret;

 err:
        sk_CONF_VALUE_pop_free(free_ret, X509V3_conf_free);

        return NULL;
}

static AUTHORITY_INFO_ACCESS *
v2i_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
    STACK_OF(CONF_VALUE) *nval)
{
        AUTHORITY_INFO_ACCESS *ainfo = NULL;
        CONF_VALUE *cnf, ctmp;
        ACCESS_DESCRIPTION *acc;
        int i, objlen;
        char *objtmp, *ptmp;

        if (!(ainfo = sk_ACCESS_DESCRIPTION_new_null())) {
                X509V3error(ERR_R_MALLOC_FAILURE);
                return NULL;
        }
        for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
                cnf = sk_CONF_VALUE_value(nval, i);
                if ((acc = ACCESS_DESCRIPTION_new()) == NULL) {
                        X509V3error(ERR_R_MALLOC_FAILURE);
                        goto err;
                }
                if (sk_ACCESS_DESCRIPTION_push(ainfo, acc) == 0) {
                        ACCESS_DESCRIPTION_free(acc);
                        X509V3error(ERR_R_MALLOC_FAILURE);
                        goto err;
                }
                ptmp = strchr(cnf->name, ';');
                if (!ptmp) {
                        X509V3error(X509V3_R_INVALID_SYNTAX);
                        goto err;
                }
                objlen = ptmp - cnf->name;
                ctmp.name = ptmp + 1;
                ctmp.value = cnf->value;
                if (!v2i_GENERAL_NAME_ex(acc->location, method, ctx, &ctmp, 0))
                        goto err;
                if (!(objtmp = malloc(objlen + 1))) {
                        X509V3error(ERR_R_MALLOC_FAILURE);
                        goto err;
                }
                strlcpy(objtmp, cnf->name, objlen + 1);
                acc->method = OBJ_txt2obj(objtmp, 0);
                if (!acc->method) {
                        X509V3error(X509V3_R_BAD_OBJECT);
                        ERR_asprintf_error_data("value=%s", objtmp);
                        free(objtmp);
                        goto err;
                }
                free(objtmp);
        }
        return ainfo;

err:
        sk_ACCESS_DESCRIPTION_pop_free(ainfo, ACCESS_DESCRIPTION_free);
        return NULL;
}

int
i2a_ACCESS_DESCRIPTION(BIO *bp, const ACCESS_DESCRIPTION* a)
{
        i2a_ASN1_OBJECT(bp, a->method);
        return 2;
}
LCRYPTO_ALIAS(i2a_ACCESS_DESCRIPTION);