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

/* tests/icred.c - test harness for getting initial creds */

/*

 * Copyright (C) 2013 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 exercises the init_creds APIs in ways kinit doesn't.  Right now

 * it is very simplistic, but it can be extended as needed.

 */

#include "k5-platform.h"

#include <krb5.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);

    }

}

int

main(int argc, char **argv)

{

    const char *princstr, *password;

    krb5_principal client;

    krb5_init_creds_context icc;

    krb5_get_init_creds_opt *opt;

    krb5_creds creds;

    krb5_boolean stepwise = FALSE;

    krb5_preauthtype ptypes[64];

    int c, nptypes = 0;

    char *val;

    check(krb5_init_context(&ctx));

    check(krb5_get_init_creds_opt_alloc(ctx, &opt));

    while ((c = getopt(argc, argv, "so:X:")) != -1) {

        switch (c) {

        case 's':

            stepwise = TRUE;

            break;

        case 'o':

            assert(nptypes < 64);

            ptypes[nptypes++] = atoi(optarg);

            break;

        case 'X':

            val = strchr(optarg, '=');

            if (val != NULL)

                *val++ = '\0';

            else

                val = "yes";

            check(krb5_get_init_creds_opt_set_pa(ctx, opt, optarg, val));

            break;

        default:

            abort();

        }

    }

    argc -= optind;

    argv += optind;

    if (argc != 2)

        abort();

    princstr = argv[0];

    password = argv[1];

    check(krb5_parse_name(ctx, princstr, &client));

    if (nptypes > 0)

        krb5_get_init_creds_opt_set_preauth_list(opt, ptypes, nptypes);

    if (stepwise) {

        /* Use the stepwise interface. */

        check(krb5_init_creds_init(ctx, client, NULL, NULL, 0, NULL, &icc));

        check(krb5_init_creds_set_password(ctx, icc, password));

        check(krb5_init_creds_get(ctx, icc));

        krb5_init_creds_free(ctx, icc);

    } else {

        /* Use the traditional one-shot interface. */

        check(krb5_get_init_creds_password(ctx, &creds, client, password, NULL,

                                           NULL, 0, NULL, opt));

        krb5_free_cred_contents(ctx, &creds);

    }

    krb5_get_init_creds_opt_free(ctx, opt);

    krb5_free_principal(ctx, client);

    krb5_free_context(ctx);

    return 0;

}