1/* $NetBSD: kdecode_ticket.c,v 1.2 2017/01/28 21:31:45 christos Exp $ */ 2 3/* 4 * Copyright (c) 1997 - 2004 Kungliga Tekniska H��gskolan 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 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 = 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 81struct getargs args[] = { 82 { "enctype", 'e', arg_string, &etype_str, 83 "encryption type to use", "enctype"}, 84 { "version", 0, arg_flag, &version_flag, NULL, NULL }, 85 { "help", 0, arg_flag, &help_flag, NULL, NULL } 86}; 87 88static void 89usage (int ret) 90{ 91 arg_printusage (args, 92 sizeof(args)/sizeof(*args), 93 NULL, 94 "service"); 95 exit (ret); 96} 97 98int 99main(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