1 /* 2 * Copyright (c) 1997 - 2004 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 15541 2005-07-01 07:14:58Z lha $"); 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 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 80 struct 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 87 static void 88 usage (int ret) 89 { 90 arg_printusage (args, 91 sizeof(args)/sizeof(*args), 92 NULL, 93 "service"); 94 exit (ret); 95 } 96 97 int 98 main(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 optidx = 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, &optidx)) 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 -= optidx; 124 argv += optidx; 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_cred_contents(context, out); 161 return 0; 162 } 163