1/*
2 * Copyright (c) 1997 - 2005, 2007 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include "kuser_locl.h"
35
36static int help_flag = 0;
37static int version_flag = 0;
38
39static struct getargs args[] = {
40    { "version", 	0,   arg_flag, &version_flag },
41    { "help",		0,   arg_flag, &help_flag }
42};
43
44static void
45usage (int ret)
46{
47    arg_printusage (args,
48		    sizeof(args)/sizeof(*args),
49		    NULL,
50		    "[principal]");
51    exit (ret);
52}
53
54int
55main(int argc, char **argv)
56{
57    krb5_context context;
58    krb5_error_code ret;
59    krb5_creds cred;
60    krb5_preauthtype pre_auth_types[] = {KRB5_PADATA_ENC_TIMESTAMP};
61    krb5_get_init_creds_opt *get_options;
62    krb5_verify_init_creds_opt verify_options;
63    krb5_principal principal = NULL;
64    int optidx = 0;
65
66    setprogname (argv[0]);
67
68    if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
69	usage(1);
70
71    if (help_flag)
72	usage (0);
73
74    if(version_flag) {
75	print_version(NULL);
76	exit(0);
77    }
78
79    argc -= optidx;
80    argv += optidx;
81
82    ret = krb5_init_context(&context);
83    if (ret)
84	errx (1, "krb5_init_context failed: %d", ret);
85
86    ret = krb5_get_init_creds_opt_alloc (context, &get_options);
87    if (ret)
88	krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
89
90    krb5_get_init_creds_opt_set_preauth_list (get_options,
91					      pre_auth_types,
92					      1);
93
94    krb5_verify_init_creds_opt_init (&verify_options);
95
96    if (argc) {
97	ret = krb5_parse_name(context, argv[0], &principal);
98	if (ret)
99	    krb5_err(context, 1, ret, "krb5_parse_name: %s", argv[0]);
100    } else {
101	ret = krb5_get_default_principal(context, &principal);
102	if (ret)
103	    krb5_err(context, 1, ret, "krb5_get_default_principal");
104
105    }
106
107    ret = krb5_get_init_creds_password (context,
108					&cred,
109					principal,
110					NULL,
111					krb5_prompter_posix,
112					NULL,
113					0,
114					NULL,
115					get_options);
116    if (ret)
117	krb5_err(context, 1, ret,  "krb5_get_init_creds");
118
119    ret = krb5_verify_init_creds (context,
120				  &cred,
121				  NULL,
122				  NULL,
123				  NULL,
124				  &verify_options);
125    if (ret)
126	krb5_err(context, 1, ret, "krb5_verify_init_creds");
127    krb5_free_cred_contents (context, &cred);
128    krb5_free_context (context);
129    return 0;
130}
131