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/*
* Copyright (c) 2008 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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. Neither the name of KTH nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY KTH AND ITS 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 KTH 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. */
#include "krb5_locl.h"
#include <err.h>
#include <getarg.h>
static int version_flag = 0;
static int help_flag = 0;
static struct getargs args[] = {
{"version", 0, arg_flag, &version_flag,
"print version", NULL },
{"help", 0, arg_flag, &help_flag,
NULL, NULL }
};
static void
usage (int ret)
{
arg_printusage (args,
sizeof(args)/sizeof(*args),
NULL,
"hostname");
exit (ret);
}
int
main(int argc, char **argv)
{
const char *hostname;
krb5_context context;
krb5_auth_context ac;
krb5_error_code ret;
krb5_creds cred;
krb5_ccache id;
krb5_data data;
int optidx = 0;
setprogname (argv[0]);
if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
usage(1);
if (help_flag)
usage (0);
if(version_flag){
print_version(NULL);
exit(0);
}
argc -= optidx;
argv += optidx;
if (argc < 1)
usage(1);
hostname = argv[0];
memset(&cred, 0, sizeof(cred));
ret = krb5_init_context(&context);
if (ret)
errx (1, "krb5_init_context failed: %d", ret);
ret = krb5_cc_default(context, &id);
if (ret)
krb5_err(context, 1, ret, "krb5_cc_default failed");
ret = krb5_auth_con_init(context, &ac);
if (ret)
krb5_err(context, 1, ret, "krb5_auth_con_init failed");
krb5_auth_con_addflags(context, ac,
KRB5_AUTH_CONTEXT_CLEAR_FORWARDED_CRED, NULL);
ret = krb5_cc_get_principal(context, id, &cred.client);
if (ret)
krb5_err(context, 1, ret, "krb5_cc_get_principal");
ret = krb5_make_principal(context,
&cred.server,
krb5_principal_get_realm(context, cred.client),
KRB5_TGS_NAME,
krb5_principal_get_realm(context, cred.client),
NULL);
if (ret)
krb5_err(context, 1, ret, "krb5_make_principal(server)");
ret = krb5_get_forwarded_creds (context,
ac,
id,
KDC_OPT_FORWARDABLE,
hostname,
&cred,
&data);
if (ret)
krb5_err (context, 1, ret, "krb5_get_forwarded_creds");
krb5_data_free(&data);
krb5_free_context(context);
return 0;
}
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