1/*	$NetBSD: kverify.c,v 1.2 2017/01/28 21:31:45 christos Exp $	*/
2
3/*
4 * Copyright (c) 1997 - 2005, 2007 Kungliga Tekniska H��gskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#include "kuser_locl.h"
37
38static int help_flag = 0;
39static int version_flag = 0;
40
41static struct getargs args[] = {
42    { "version", 	0,   arg_flag, &version_flag, NULL, NULL },
43    { "help",		0,   arg_flag, &help_flag,    NULL, NULL }
44};
45
46static void
47usage (int ret)
48{
49    arg_printusage (args,
50		    sizeof(args)/sizeof(*args),
51		    NULL,
52		    "[principal]");
53    exit (ret);
54}
55
56int
57main(int argc, char **argv)
58{
59    krb5_context context;
60    krb5_error_code ret;
61    krb5_creds cred;
62    krb5_preauthtype pre_auth_types[] = {KRB5_PADATA_ENC_TIMESTAMP};
63    krb5_get_init_creds_opt *get_options;
64    krb5_verify_init_creds_opt verify_options;
65    krb5_principal principal = NULL;
66    int optidx = 0;
67
68    setprogname (argv[0]);
69
70    if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
71	usage(1);
72
73    if (help_flag)
74	usage (0);
75
76    if(version_flag) {
77	print_version(NULL);
78	exit(0);
79    }
80
81    argc -= optidx;
82    argv += optidx;
83
84    ret = krb5_init_context(&context);
85    if (ret)
86	errx (1, "krb5_init_context failed: %d", ret);
87
88    ret = krb5_get_init_creds_opt_alloc (context, &get_options);
89    if (ret)
90	krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
91
92    krb5_get_init_creds_opt_set_preauth_list (get_options,
93					      pre_auth_types,
94					      1);
95
96    krb5_verify_init_creds_opt_init (&verify_options);
97
98    if (argc) {
99	ret = krb5_parse_name(context, argv[0], &principal);
100	if (ret)
101	    krb5_err(context, 1, ret, "krb5_parse_name: %s", argv[0]);
102    } else {
103	ret = krb5_get_default_principal(context, &principal);
104	if (ret)
105	    krb5_err(context, 1, ret, "krb5_get_default_principal");
106
107    }
108
109    ret = krb5_get_init_creds_password (context,
110					&cred,
111					principal,
112					NULL,
113					krb5_prompter_posix,
114					NULL,
115					0,
116					NULL,
117					get_options);
118    if (ret)
119	krb5_err(context, 1, ret,  "krb5_get_init_creds");
120
121    ret = krb5_verify_init_creds (context,
122				  &cred,
123				  NULL,
124				  NULL,
125				  NULL,
126				  &verify_options);
127    if (ret)
128	krb5_err(context, 1, ret, "krb5_verify_init_creds");
129    krb5_free_cred_contents (context, &cred);
130    krb5_free_context (context);
131    return 0;
132}
133