1 /*
2 * Copyright (c) 2005 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 KTH nor the names of its contributors may be
18 * used to endorse or promote products derived from this software without
19 * specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
22 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
28 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
32
33 #include "krb5_locl.h"
34 #include <getarg.h>
35 #include <err.h>
36
37 static int version_flag = 0;
38 static int help_flag = 0;
39
40 static struct getargs args[] = {
41 {"version", 0, arg_flag, &version_flag,
42 "print version", NULL },
43 {"help", 0, arg_flag, &help_flag,
44 NULL, NULL }
45 };
46
47 static void
usage(int ret)48 usage (int ret)
49 {
50 arg_printusage (args,
51 sizeof(args)/sizeof(*args),
52 NULL,
53 "principal luser");
54 exit (ret);
55 }
56
57 int
main(int argc,char ** argv)58 main(int argc, char **argv)
59 {
60 krb5_context context;
61 krb5_error_code ret;
62 krb5_principal principal;
63 char *p;
64 int o = 0;
65
66 setprogname(argv[0]);
67
68 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &o))
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 -= o;
80 argv += o;
81
82 ret = krb5_init_context(&context);
83 if (ret)
84 errx (1, "krb5_init_context failed: %d", ret);
85
86 if (argc != 2)
87 usage(1);
88
89 ret = krb5_parse_name(context, argv[0], &principal);
90 if (ret)
91 krb5_err(context, 1, ret, "krb5_parse_name");
92
93 ret = krb5_unparse_name(context, principal, &p);
94 if (ret)
95 krb5_err(context, 1, ret, "krb5_unparse_name");
96
97 ret = krb5_kuserok(context, principal, argv[1]);
98
99 krb5_free_context(context);
100
101 printf("%s is %sallowed to login as %s\n", p, ret ? "" : "NOT ", argv[1]);
102
103 return 0;
104 }
105