1 /* 2 * Copyright (c) 1997 - 1999 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 36 RCSID("$Id: kdecode_ticket.c,v 1.2 1999/12/02 17:05:00 joda Exp $"); 37 38 static char *etype_str; 39 static int version_flag; 40 static int help_flag; 41 42 static void 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 krb5_crypto_init(context, &key, 0, &crypto); 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 = krb5_decode_EncTicketPart (context, 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 } 77 78 struct getargs args[] = { 79 { "enctype", 'e', arg_string, &etype_str, 80 "encryption type to use", "enctype"}, 81 { "version", 0, arg_flag, &version_flag }, 82 { "help", 0, arg_flag, &help_flag } 83 }; 84 85 static void 86 usage (int ret) 87 { 88 arg_printusage (args, 89 sizeof(args)/sizeof(*args), 90 NULL, 91 "service"); 92 exit (ret); 93 } 94 95 int 96 main(int argc, char **argv) 97 { 98 krb5_error_code ret; 99 krb5_context context; 100 krb5_ccache cache; 101 krb5_creds in, *out; 102 int optind = 0; 103 104 set_progname (argv[0]); 105 106 ret = krb5_init_context (&context); 107 if (ret) 108 errx(1, "krb5_init_context failed: %u", ret); 109 110 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optind)) 111 usage(1); 112 113 if (help_flag) 114 usage (0); 115 116 if(version_flag) { 117 print_version(NULL); 118 exit(0); 119 } 120 121 argc -= optind; 122 argv += optind; 123 124 if (argc != 1) 125 usage (1); 126 127 ret = krb5_cc_default(context, &cache); 128 if (ret) 129 krb5_err (context, 1, ret, "krb5_cc_default"); 130 131 memset(&in, 0, sizeof(in)); 132 133 if (etype_str) { 134 krb5_enctype enctype; 135 136 ret = krb5_string_to_enctype(context, etype_str, &enctype); 137 if (ret) 138 krb5_errx (context, 1, "unrecognized enctype: %s", etype_str); 139 in.session.keytype = enctype; 140 } 141 142 ret = krb5_cc_get_principal(context, cache, &in.client); 143 if (ret) 144 krb5_err (context, 1, ret, "krb5_cc_get_principal"); 145 146 ret = krb5_parse_name(context, argv[0], &in.server); 147 if (ret) 148 krb5_err (context, 1, ret, "krb5_parse_name %s", argv[0]); 149 150 in.times.endtime = 0; 151 ret = krb5_get_credentials(context, 0, cache, &in, &out); 152 if (ret) 153 krb5_err (context, 1, ret, "krb5_get_credentials"); 154 155 print_and_decode_tkt (context, &out->ticket, out->server, 156 out->session.keytype); 157 158 krb5_free_creds_contents(context, out); 159 return 0; 160 } 161