/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */

/* tests/hrealm.c - Test harness for host-realm interfaces */

/*

 * Copyright (C) 2012 by the Massachusetts Institute of Technology.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * * Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 *

 * * 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.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS 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

 * COPYRIGHT HOLDER OR 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 program is intended to be run from a python script as:

 *

 *     hrealm -h|-f|-d [hostname]

 *

 * Calls krb5_get_host_realm, krb5_get_fallback_host_realm, or

 * krb5_default_realm depending on the option given.  For the first two

 * choices, hostname or NULL is passed as the argument.  The results are

 * displayed one per line.

 */

#include "k5-int.h"

static krb5_context ctx;

static void

check(krb5_error_code code)

{

    const char *errmsg;

    if (code) {

        errmsg = krb5_get_error_message(ctx, code);

        fprintf(stderr, "%s\n", errmsg);

        krb5_free_error_message(ctx, errmsg);

        exit(1);

    }

}

static void

display(char **realms)

{

    while (realms != NULL && *realms != NULL)

        printf("%s\n", *realms++);

}

int

main(int argc, char **argv)

{

    krb5_data d;

    char **realms, *realm;

    check(krb5_init_context(&ctx));

    /* Parse arguments. */

    if (argc < 2 || argc > 3)

        abort();

    if (strcmp(argv[1], "-d") == 0) {

        check(krb5_get_default_realm(ctx, &realm));

        printf("%s\n", realm);

        krb5_free_default_realm(ctx, realm);

    } else if (strcmp(argv[1], "-h") == 0) {

        check(krb5_get_host_realm(ctx, argv[2], &realms));

        display(realms);

        krb5_free_host_realm(ctx, realms);

    } else if (strcmp(argv[1], "-f") == 0) {

        assert(argc == 3);

        d = string2data(argv[2]);

        check(krb5_get_fallback_host_realm(ctx, &d, &realms));

        display(realms);

        krb5_free_host_realm(ctx, realms);

    } else {

        abort();

    }

    krb5_free_context(ctx);

    return 0;

}