OpenBSD-4.6/kerberosV/src/kuser/kgetcred.c

/*
 * Copyright (c) 1997 - 2004 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 the Institute 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 THE INSTITUTE 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 INSTITUTE 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 "kuser_locl.h"

RCSID("$KTH: kgetcred.c,v 1.9 2004/08/05 18:49:25 lha Exp $");

static char *cache_str;
static char *etype_str;
static int version_flag;
static int help_flag;
static int transit_check = 1;
static int canonicalize = 0;

struct getargs args[] = {
    { "cache",		'c', arg_string, &cache_str,
      "credential cache to use", "cache"},
    { "enctype",	'e', arg_string, &etype_str,
      "encryption type to use", "enctype"},
    { "transit-check",	0,   arg_negative_flag, &transit_check },
    { "canonicalize",	0,   arg_flag, &canonicalize },
    { "version", 	0,   arg_flag, &version_flag },
    { "help",		0,   arg_flag, &help_flag }
};

static void
usage (int ret)
{
    arg_printusage (args,
		    sizeof(args)/sizeof(*args),
		    NULL,
		    "service");
    exit (ret);
}

int
main(int argc, char **argv)
{
    krb5_error_code ret;
    krb5_context context;
    krb5_ccache cache;
    krb5_creds in, *out;
    krb5_kdc_flags flags;
    int optind = 0;

    flags.i = 0;

    ret = krb5_init_context (&context);
    if (ret)
	errx(1, "krb5_init_context failed: %d", ret);
  
    if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optind))
	usage(1);
    
    if (help_flag)
	usage (0);

    if(version_flag) {
	print_version(NULL);
	exit(0);
    }

    argc -= optind;
    argv += optind;

    if (argc != 1)
	usage (1);

    ret = krb5_cc_default(context, &cache);
    if (ret)
	krb5_err (context, 1, ret, "krb5_cc_default");

    if(cache_str) {
	ret = krb5_cc_resolve(context, cache_str, &cache);
	if (ret)
	    krb5_err (context, 1, ret, "%s", cache_str);
    } else {
	ret = krb5_cc_default (context, &cache);
	if (ret)
	    krb5_err (context, 1, ret, "krb5_cc_resolve");
    }

    memset(&in, 0, sizeof(in));

    if (etype_str) {
	krb5_enctype enctype;

	ret = krb5_string_to_enctype(context, etype_str, &enctype);
	if (ret)
	    krb5_errx (context, 1, "unrecognized enctype: %s", etype_str);
	in.session.keytype = enctype;
    }

    ret = krb5_cc_get_principal(context, cache, &in.client);
    if (ret)
	krb5_err (context, 1, ret, "krb5_cc_get_principal");

    ret = krb5_parse_name(context, argv[0], &in.server);
    if (ret)
	krb5_err (context, 1, ret, "krb5_parse_name %s", argv[0]);

    if (!transit_check)
	flags.b.disable_transited_check = 1;
    if (canonicalize)
	flags.b.canonicalize = 1;


    in.times.endtime = 0;
    ret = krb5_get_credentials_with_flags(context, 0, flags, cache, &in, &out);
    if (ret)
	krb5_err (context, 1, ret, "krb5_get_credentials");

    krb5_free_cred_contents(context, out);
    return 0;
}