1 /* $NetBSD: kdecode_ticket.c,v 1.1.1.1 2011/04/13 18:14:38 elric Exp $ */
2
3 /*
4 * Copyright (c) 1997 - 2004 Kungliga Tekniska Högskolan
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
38 static char *etype_str;
39 static int version_flag;
40 static int help_flag;
41
42 static void
print_and_decode_tkt(krb5_context context,krb5_data * ticket,krb5_principal server,krb5_enctype enctype)43 print_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 = decode_EncTicketPart (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 free_EncTicketPart(&decr_part);
79 }
80
81 struct getargs args[] = {
82 { "enctype", 'e', arg_string, &etype_str,
83 "encryption type to use", "enctype"},
84 { "version", 0, arg_flag, &version_flag },
85 { "help", 0, arg_flag, &help_flag }
86 };
87
88 static void
usage(int ret)89 usage (int ret)
90 {
91 arg_printusage (args,
92 sizeof(args)/sizeof(*args),
93 NULL,
94 "service");
95 exit (ret);
96 }
97
98 int
main(int argc,char ** argv)99 main(int argc, char **argv)
100 {
101 krb5_error_code ret;
102 krb5_context context;
103 krb5_ccache cache;
104 krb5_creds in, *out;
105 int optidx = 0;
106
107 setprogname (argv[0]);
108
109 ret = krb5_init_context (&context);
110 if (ret)
111 errx(1, "krb5_init_context failed: %d", ret);
112
113 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
114 usage(1);
115
116 if (help_flag)
117 usage (0);
118
119 if(version_flag) {
120 print_version(NULL);
121 exit(0);
122 }
123
124 argc -= optidx;
125 argv += optidx;
126
127 if (argc != 1)
128 usage (1);
129
130 ret = krb5_cc_default(context, &cache);
131 if (ret)
132 krb5_err (context, 1, ret, "krb5_cc_default");
133
134 memset(&in, 0, sizeof(in));
135
136 if (etype_str) {
137 krb5_enctype enctype;
138
139 ret = krb5_string_to_enctype(context, etype_str, &enctype);
140 if (ret)
141 krb5_errx (context, 1, "unrecognized enctype: %s", etype_str);
142 in.session.keytype = enctype;
143 }
144
145 ret = krb5_cc_get_principal(context, cache, &in.client);
146 if (ret)
147 krb5_err (context, 1, ret, "krb5_cc_get_principal");
148
149 ret = krb5_parse_name(context, argv[0], &in.server);
150 if (ret)
151 krb5_err (context, 1, ret, "krb5_parse_name %s", argv[0]);
152
153 in.times.endtime = 0;
154 ret = krb5_get_credentials(context, 0, cache, &in, &out);
155 if (ret)
156 krb5_err (context, 1, ret, "krb5_get_credentials");
157
158 print_and_decode_tkt (context, &out->ticket, out->server,
159 out->session.keytype);
160
161 krb5_free_cred_contents(context, out);
162 return 0;
163 }
164