kdecode_ticket.c revision 78527 
1/*
2 * Copyright (c) 1997 - 2000 Kungliga Tekniska H�gskolan
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
36RCSID("$Id: kdecode_ticket.c,v 1.5 2001/02/20 01:44:51 assar Exp $");
37
38static char *etype_str;
39static int version_flag;
40static int help_flag;
41
42static void
43print_and_decode_tkt (krb5_context context,
44		      krb5_data *ticket,
45		      krb5_principal server,
46		      krb5_enctype enctype)
47{
48    krb5_error_code ret;
49    krb5_crypto crypto;
50    krb5_data dec_data;
51    size_t len;
52    EncTicketPart decr_part;
53    krb5_keyblock key;
54    Ticket tkt;
55
56    ret = decode_Ticket (ticket->data, ticket->length, &tkt, &len);
57    if (ret)
58	krb5_err (context, 1, ret, "decode_Ticket");
59
60    ret = krb5_string_to_key (context, enctype, "foo", server, &key);
61    if (ret)
62	krb5_err (context, 1, ret, "krb5_string_to_key");
63
64    ret = krb5_crypto_init(context, &key, 0, &crypto);
65    if (ret)
66	krb5_err (context, 1, ret, "krb5_crypto_init");
67
68    ret = krb5_decrypt_EncryptedData (context, crypto, KRB5_KU_TICKET,
69				      &tkt.enc_part, &dec_data);
70    krb5_crypto_destroy (context, crypto);
71    if (ret)
72	krb5_err (context, 1, ret, "krb5_decrypt_EncryptedData");
73    ret = krb5_decode_EncTicketPart (context, dec_data.data, dec_data.length,
74				     &decr_part, &len);
75    krb5_data_free (&dec_data);
76    if (ret)
77	krb5_err (context, 1, ret, "krb5_decode_EncTicketPart");
78}
79
80struct getargs args[] = {
81    { "enctype",	'e', arg_string, &etype_str,
82      "encryption type to use", "enctype"},
83    { "version", 	0,   arg_flag, &version_flag },
84    { "help",		0,   arg_flag, &help_flag }
85};
86
87static void
88usage (int ret)
89{
90    arg_printusage (args,
91		    sizeof(args)/sizeof(*args),
92		    NULL,
93		    "service");
94    exit (ret);
95}
96
97int
98main(int argc, char **argv)
99{
100    krb5_error_code ret;
101    krb5_context context;
102    krb5_ccache cache;
103    krb5_creds in, *out;
104    int optind = 0;
105
106    setprogname (argv[0]);
107
108    ret = krb5_init_context (&context);
109    if (ret)
110	errx(1, "krb5_init_context failed: %d", ret);
111
112    if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optind))
113	usage(1);
114
115    if (help_flag)
116	usage (0);
117
118    if(version_flag) {
119	print_version(NULL);
120	exit(0);
121    }
122
123    argc -= optind;
124    argv += optind;
125
126    if (argc != 1)
127	usage (1);
128
129    ret = krb5_cc_default(context, &cache);
130    if (ret)
131	krb5_err (context, 1, ret, "krb5_cc_default");
132
133    memset(&in, 0, sizeof(in));
134
135    if (etype_str) {
136	krb5_enctype enctype;
137
138	ret = krb5_string_to_enctype(context, etype_str, &enctype);
139	if (ret)
140	    krb5_errx (context, 1, "unrecognized enctype: %s", etype_str);
141	in.session.keytype = enctype;
142    }
143
144    ret = krb5_cc_get_principal(context, cache, &in.client);
145    if (ret)
146	krb5_err (context, 1, ret, "krb5_cc_get_principal");
147
148    ret = krb5_parse_name(context, argv[0], &in.server);
149    if (ret)
150	krb5_err (context, 1, ret, "krb5_parse_name %s", argv[0]);
151
152    in.times.endtime = 0;
153    ret = krb5_get_credentials(context, 0, cache, &in, &out);
154    if (ret)
155	krb5_err (context, 1, ret, "krb5_get_credentials");
156
157    print_and_decode_tkt (context, &out->ticket, out->server,
158			  out->session.keytype);
159
160    krb5_free_creds_contents(context, out);
161    return 0;
162}
163