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 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 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 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