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

/* tests/gssapi/t_lifetime.c - display cred and context lifetimes */

/*

 * Copyright (C) 2017 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.

 */

#include <stdio.h>

#include <stdlib.h>

#include <assert.h>

#include "common.h"

/*

 * Using the default credential, exercise the GSS functions which accept or

 * produce lifetimes.  Display the following results, one per line, as ASCII

 * integers or the string "indefinite":

 *

 *   initiator cred lifetime according to gss_acquire_cred()

 *   initiator cred lifetime according to gss_inquire_cred()

 *   acceptor cred lifetime according to gss_acquire_cred()

 *   acceptor cred lifetime according to gss_inquire_cred()

 *   initiator context lifetime according to gss_init_sec_context()

 *   initiator context lifetime according to gss_inquire_context()

 *   initiator context lifetime according to gss_context_time()

 *   acceptor context lifetime according to gss_init_sec_context()

 *   acceptor context lifetime according to gss_inquire_context()

 *   acceptor context lifetime according to gss_context_time()

 */

static void

display_time(OM_uint32 tval)

{

    if (tval == GSS_C_INDEFINITE)

        puts("indefinite");

    else

        printf("%u\n", (unsigned int)tval);

}

int

main(int argc, char *argv[])

{

    OM_uint32 minor, major;

    gss_cred_id_t icred, acred;

    gss_name_t tname;

    gss_ctx_id_t ictx = GSS_C_NO_CONTEXT, actx = GSS_C_NO_CONTEXT;

    gss_buffer_desc itok = GSS_C_EMPTY_BUFFER, atok = GSS_C_EMPTY_BUFFER;

    OM_uint32 time_req = GSS_C_INDEFINITE, time_rec;

    if (argc < 2 || argc > 3) {

        fprintf(stderr, "Usage: %s targetname [time_req]\n", argv[0]);

        return 1;

    }

    tname = import_name(argv[1]);

    if (argc >= 3)

        time_req = atoll(argv[2]);

    /* Get initiator cred and display its lifetime according to

     * gss_acquire_cred and gss_inquire_cred. */

    major = gss_acquire_cred(&minor, GSS_C_NO_NAME, time_req, &mechset_krb5,

                             GSS_C_INITIATE, &icred, NULL, &time_rec);

    check_gsserr("gss_acquire_cred(initiate)", major, minor);

    display_time(time_rec);

    major = gss_inquire_cred(&minor, icred, NULL, &time_rec, NULL, NULL);

    check_gsserr("gss_inquire_cred(initiate)", major, minor);

    display_time(time_rec);

    /* Get acceptor cred and display its lifetime according to gss_acquire_cred

     * and gss_inquire_cred. */

    major = gss_acquire_cred(&minor, GSS_C_NO_NAME, time_req, &mechset_krb5,

                             GSS_C_ACCEPT, &acred, NULL, &time_rec);

    check_gsserr("gss_acquire_cred(accept)", major, minor);

    display_time(time_rec);

    major = gss_inquire_cred(&minor, acred, NULL, &time_rec, NULL, NULL);

    check_gsserr("gss_inquire_cred(accept)", major, minor);

    display_time(time_rec);

    /* Make an initiator context and display its lifetime according to

     * gss_init_sec_context, gss_inquire_context, and gss_context_time. */

    major = gss_init_sec_context(&minor, icred, &ictx, tname, &mech_krb5, 0,

                                 time_req, GSS_C_NO_CHANNEL_BINDINGS, &atok,

                                 NULL, &itok, NULL, &time_rec);

    check_gsserr("gss_init_sec_context", major, minor);

    assert(major == GSS_S_COMPLETE);

    display_time(time_rec);

    major = gss_inquire_context(&minor, ictx, NULL, NULL, &time_rec, NULL,

                                NULL, NULL, NULL);

    check_gsserr("gss_inquire_context(initiate)", major, minor);

    display_time(time_rec);

    major = gss_context_time(&minor, ictx, &time_rec);

    check_gsserr("gss_context_time(initiate)", major, minor);

    display_time(time_rec);

    major = gss_accept_sec_context(&minor, &actx, acred, &itok,

                                   GSS_C_NO_CHANNEL_BINDINGS, NULL,

                                   NULL, &atok, NULL, &time_rec, NULL);

    check_gsserr("gss_accept_sec_context", major, minor);

    assert(major == GSS_S_COMPLETE);

    display_time(time_rec);

    major = gss_inquire_context(&minor, actx, NULL, NULL, &time_rec, NULL,

                                NULL, NULL, NULL);

    check_gsserr("gss_inquire_context(accept)", major, minor);

    display_time(time_rec);

    major = gss_context_time(&minor, actx, &time_rec);

    check_gsserr("gss_context_time(accept)", major, minor);

    display_time(time_rec);

    (void)gss_release_buffer(&minor, &itok);

    (void)gss_release_buffer(&minor, &atok);

    (void)gss_release_name(&minor, &tname);

    (void)gss_release_cred(&minor, &icred);

    (void)gss_release_cred(&minor, &acred);

    (void)gss_delete_sec_context(&minor, &ictx, NULL);

    (void)gss_delete_sec_context(&minor, &actx, NULL);

    return 0;

}