1 /*
2 * Copyright (c) 1997 - 2004 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
36 static char *etype_str;
37 static int version_flag;
38 static int help_flag;
39
40 static void
print_and_decode_tkt(krb5_context context,krb5_data * ticket,krb5_principal server,krb5_enctype enctype)41 print_and_decode_tkt (krb5_context context,
42 krb5_data *ticket,
43 krb5_principal server,
44 krb5_enctype enctype)
45 {
46 krb5_error_code ret;
47 krb5_crypto crypto;
48 krb5_data dec_data;
49 size_t len;
50 EncTicketPart decr_part;
51 krb5_keyblock key;
52 Ticket tkt;
53
54 ret = decode_Ticket (ticket->data, ticket->length, &tkt, &len);
55 if (ret)
56 krb5_err (context, 1, ret, "decode_Ticket");
57
58 ret = krb5_string_to_key (context, enctype, "foo", server, &key);
59 if (ret)
60 krb5_err (context, 1, ret, "krb5_string_to_key");
61
62 ret = krb5_crypto_init(context, &key, 0, &crypto);
63 if (ret)
64 krb5_err (context, 1, ret, "krb5_crypto_init");
65
66 ret = krb5_decrypt_EncryptedData (context, crypto, KRB5_KU_TICKET,
67 &tkt.enc_part, &dec_data);
68 krb5_crypto_destroy (context, crypto);
69 if (ret)
70 krb5_err (context, 1, ret, "krb5_decrypt_EncryptedData");
71 ret = decode_EncTicketPart (dec_data.data, dec_data.length,
72 &decr_part, &len);
73 krb5_data_free (&dec_data);
74 if (ret)
75 krb5_err (context, 1, ret, "krb5_decode_EncTicketPart");
76 free_EncTicketPart(&decr_part);
77 }
78
79 struct getargs args[] = {
80 { "enctype", 'e', arg_string, &etype_str,
81 "encryption type to use", "enctype"},
82 { "version", 0, arg_flag, &version_flag },
83 { "help", 0, arg_flag, &help_flag }
84 };
85
86 static void
usage(int ret)87 usage (int ret)
88 {
89 arg_printusage (args,
90 sizeof(args)/sizeof(*args),
91 NULL,
92 "service");
93 exit (ret);
94 }
95
96 int
main(int argc,char ** argv)97 main(int argc, char **argv)
98 {
99 krb5_error_code ret;
100 krb5_context context;
101 krb5_ccache cache;
102 krb5_creds in, *out;
103 int optidx = 0;
104
105 setprogname (argv[0]);
106
107 ret = krb5_init_context (&context);
108 if (ret)
109 errx(1, "krb5_init_context failed: %d", ret);
110
111 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
112 usage(1);
113
114 if (help_flag)
115 usage (0);
116
117 if(version_flag) {
118 print_version(NULL);
119 exit(0);
120 }
121
122 argc -= optidx;
123 argv += optidx;
124
125 if (argc != 1)
126 usage (1);
127
128 ret = krb5_cc_default(context, &cache);
129 if (ret)
130 krb5_err (context, 1, ret, "krb5_cc_default");
131
132 memset(&in, 0, sizeof(in));
133
134 if (etype_str) {
135 krb5_enctype enctype;
136
137 ret = krb5_string_to_enctype(context, etype_str, &enctype);
138 if (ret)
139 krb5_errx (context, 1, "unrecognized enctype: %s", etype_str);
140 in.session.keytype = enctype;
141 }
142
143 ret = krb5_cc_get_principal(context, cache, &in.client);
144 if (ret)
145 krb5_err (context, 1, ret, "krb5_cc_get_principal");
146
147 ret = krb5_parse_name(context, argv[0], &in.server);
148 if (ret)
149 krb5_err (context, 1, ret, "krb5_parse_name %s", argv[0]);
150
151 in.times.endtime = 0;
152 ret = krb5_get_credentials(context, 0, cache, &in, &out);
153 if (ret)
154 krb5_err (context, 1, ret, "krb5_get_credentials");
155
156 print_and_decode_tkt (context, &out->ticket, out->server,
157 out->session.keytype);
158
159 krb5_free_cred_contents(context, out);
160 return 0;
161 }
162