/* v3_sxnet.c */

/*

 * 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 "cryptlib.h"

#include <openssl/conf.h>

#include <openssl/asn1.h>

#include <openssl/asn1t.h>

#include <openssl/x509v3.h>

/* Support for Thawte strong extranet extension */

#define SXNET_TEST

static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,

                     int indent);

#ifdef SXNET_TEST

static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,

                        STACK_OF(CONF_VALUE) *nval);

#endif

const X509V3_EXT_METHOD v3_sxnet = {

    NID_sxnet, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(SXNET),

    0, 0, 0, 0,

    0, 0,

    0,

#ifdef SXNET_TEST

    (X509V3_EXT_V2I)sxnet_v2i,

#else

    0,

#endif

    (X509V3_EXT_I2R)sxnet_i2r,

    0,

    NULL

};

ASN1_SEQUENCE(SXNETID) = {

        ASN1_SIMPLE(SXNETID, zone, ASN1_INTEGER),

        ASN1_SIMPLE(SXNETID, user, ASN1_OCTET_STRING)

} ASN1_SEQUENCE_END(SXNETID)

IMPLEMENT_ASN1_FUNCTIONS(SXNETID)

ASN1_SEQUENCE(SXNET) = {

        ASN1_SIMPLE(SXNET, version, ASN1_INTEGER),

        ASN1_SEQUENCE_OF(SXNET, ids, SXNETID)

} ASN1_SEQUENCE_END(SXNET)

IMPLEMENT_ASN1_FUNCTIONS(SXNET)

static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,

                     int indent)

{

    long v;

    char *tmp;

    SXNETID *id;

    int i;

    v = ASN1_INTEGER_get(sx->version);

    BIO_printf(out, "%*sVersion: %ld (0x%lX)", indent, "", v + 1, v);

    for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {

        id = sk_SXNETID_value(sx->ids, i);

        tmp = i2s_ASN1_INTEGER(NULL, id->zone);

        BIO_printf(out, "\n%*sZone: %s, User: ", indent, "", tmp);

        OPENSSL_free(tmp);

        M_ASN1_OCTET_STRING_print(out, id->user);

    }

    return 1;

}

#ifdef SXNET_TEST

/*

 * NBB: this is used for testing only. It should *not* be used for anything

 * else because it will just take static IDs from the configuration file and

 * they should really be separate values for each user.

 */

static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,

                        STACK_OF(CONF_VALUE) *nval)

{

    CONF_VALUE *cnf;

    SXNET *sx = NULL;

    int i;

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

        cnf = sk_CONF_VALUE_value(nval, i);

        if (!SXNET_add_id_asc(&sx, cnf->name, cnf->value, -1))

            return NULL;

    }

    return sx;

}

#endif

/* Strong Extranet utility functions */

/* Add an id given the zone as an ASCII number */

int SXNET_add_id_asc(SXNET **psx, char *zone, char *user, int userlen)

{

    ASN1_INTEGER *izone = NULL;

    if (!(izone = s2i_ASN1_INTEGER(NULL, zone))) {

        X509V3err(X509V3_F_SXNET_ADD_ID_ASC, X509V3_R_ERROR_CONVERTING_ZONE);

        return 0;

    }

    return SXNET_add_id_INTEGER(psx, izone, user, userlen);

}

/* Add an id given the zone as an unsigned long */

int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, char *user,

                       int userlen)

{

    ASN1_INTEGER *izone = NULL;

    if (!(izone = M_ASN1_INTEGER_new()) || !ASN1_INTEGER_set(izone, lzone)) {

        X509V3err(X509V3_F_SXNET_ADD_ID_ULONG, ERR_R_MALLOC_FAILURE);

        M_ASN1_INTEGER_free(izone);

        return 0;

    }

    return SXNET_add_id_INTEGER(psx, izone, user, userlen);

}

/*

 * Add an id given the zone as an ASN1_INTEGER. Note this version uses the

 * passed integer and doesn't make a copy so don't free it up afterwards.

 */

int SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *zone, char *user,

                         int userlen)

{

    SXNET *sx = NULL;

    SXNETID *id = NULL;

    if (!psx || !zone || !user) {

        X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER,

                  X509V3_R_INVALID_NULL_ARGUMENT);

        return 0;

    }

    if (userlen == -1)

        userlen = strlen(user);

    if (userlen > 64) {

        X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER, X509V3_R_USER_TOO_LONG);

        return 0;

    }

    if (!*psx) {

        if (!(sx = SXNET_new()))

            goto err;

        if (!ASN1_INTEGER_set(sx->version, 0))

            goto err;

        *psx = sx;

    } else

        sx = *psx;

    if (SXNET_get_id_INTEGER(sx, zone)) {

        X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER, X509V3_R_DUPLICATE_ZONE_ID);

        return 0;

    }

    if (!(id = SXNETID_new()))

        goto err;

    if (userlen == -1)

        userlen = strlen(user);

    if (!M_ASN1_OCTET_STRING_set(id->user, user, userlen))

        goto err;

    if (!sk_SXNETID_push(sx->ids, id))

        goto err;

    id->zone = zone;

    return 1;

 err:

    X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER, ERR_R_MALLOC_FAILURE);

    SXNETID_free(id);

    SXNET_free(sx);

    *psx = NULL;

    return 0;

}

ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, char *zone)

{

    ASN1_INTEGER *izone = NULL;

    ASN1_OCTET_STRING *oct;

    if (!(izone = s2i_ASN1_INTEGER(NULL, zone))) {

        X509V3err(X509V3_F_SXNET_GET_ID_ASC, X509V3_R_ERROR_CONVERTING_ZONE);

        return NULL;

    }

    oct = SXNET_get_id_INTEGER(sx, izone);

    M_ASN1_INTEGER_free(izone);

    return oct;

}

ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone)

{

    ASN1_INTEGER *izone = NULL;

    ASN1_OCTET_STRING *oct;

    if (!(izone = M_ASN1_INTEGER_new()) || !ASN1_INTEGER_set(izone, lzone)) {

        X509V3err(X509V3_F_SXNET_GET_ID_ULONG, ERR_R_MALLOC_FAILURE);

        M_ASN1_INTEGER_free(izone);

        return NULL;

    }

    oct = SXNET_get_id_INTEGER(sx, izone);

    M_ASN1_INTEGER_free(izone);

    return oct;

}

ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone)

{

    SXNETID *id;

    int i;

    for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {

        id = sk_SXNETID_value(sx->ids, i);

        if (!M_ASN1_INTEGER_cmp(id->zone, zone))

            return id->user;

    }

    return NULL;

}

IMPLEMENT_STACK_OF(SXNETID)

IMPLEMENT_ASN1_SET_OF(SXNETID)