1/* 2 * Copyright (c) 1997 - 2008 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 36static char *cache_str; 37static char *out_cache_str; 38static char *delegation_cred_str; 39static char *etype_str; 40static int transit_flag = 1; 41static int forwardable_flag; 42static int canonicalize_flag; 43static char *impersonate_str; 44static char *nametype_str; 45static int version_flag; 46static int help_flag; 47 48struct getargs args[] = { 49 { "cache", 'c', arg_string, &cache_str, 50 NP_("credential cache to use", ""), "cache"}, 51 { "out-cache", 0, arg_string, &out_cache_str, 52 NP_("credential cache to store credential in", ""), "cache"}, 53 { "delegation-credential-cache",0,arg_string, &delegation_cred_str, 54 NP_("where to find the ticket use for delegation", ""), "cache"}, 55 { "canonicalize", 0, arg_flag, &canonicalize_flag, 56 NP_("canonicalize the principal", ""), NULL }, 57 { "forwardable", 0, arg_flag, &forwardable_flag, 58 NP_("forwardable ticket requested", ""), NULL}, 59 { "transit-check", 0, arg_negative_flag, &transit_flag, NULL, NULL }, 60 { "enctype", 'e', arg_string, &etype_str, 61 NP_("encryption type to use", ""), "enctype"}, 62 { "impersonate", 0, arg_string, &impersonate_str, 63 NP_("client to impersonate", ""), "principal"}, 64 { "name-type", 0, arg_string, &nametype_str, NULL, NULL }, 65 { "version", 0, arg_flag, &version_flag, NULL, NULL }, 66 { "help", 0, arg_flag, &help_flag, NULL, NULL } 67}; 68 69static void 70usage (int ret) 71{ 72 arg_printusage (args, 73 sizeof(args)/sizeof(*args), 74 NULL, 75 "service"); 76 exit (ret); 77} 78 79int 80main(int argc, char **argv) 81{ 82 krb5_error_code ret; 83 krb5_context context; 84 krb5_ccache cache; 85 krb5_creds *out; 86 int optidx = 0; 87 krb5_get_creds_opt opt; 88 krb5_principal server; 89 krb5_principal impersonate = NULL; 90 91 setprogname (argv[0]); 92 93 ret = krb5_init_context (&context); 94 if (ret) 95 errx(1, "krb5_init_context failed: %d", ret); 96 97 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx)) 98 usage(1); 99 100 if (help_flag) 101 usage (0); 102 103 if(version_flag) { 104 print_version(NULL); 105 exit(0); 106 } 107 108 argc -= optidx; 109 argv += optidx; 110 111 if (argc != 1) 112 usage (1); 113 114 if(cache_str) { 115 ret = krb5_cc_resolve(context, cache_str, &cache); 116 if (ret) 117 krb5_err (context, 1, ret, "%s", cache_str); 118 } else { 119 ret = krb5_cc_default (context, &cache); 120 if (ret) 121 krb5_err (context, 1, ret, "krb5_cc_resolve"); 122 } 123 124 ret = krb5_get_creds_opt_alloc(context, &opt); 125 if (ret) 126 krb5_err (context, 1, ret, "krb5_get_creds_opt_alloc"); 127 128 if (etype_str) { 129 krb5_enctype enctype; 130 131 ret = krb5_string_to_enctype(context, etype_str, &enctype); 132 if (ret) 133 krb5_errx (context, 1, N_("unrecognized enctype: %s", ""), 134 etype_str); 135 krb5_get_creds_opt_set_enctype(context, opt, enctype); 136 } 137 138 if (impersonate_str) { 139 ret = krb5_parse_name(context, impersonate_str, &impersonate); 140 if (ret) 141 krb5_err (context, 1, ret, "krb5_parse_name %s", impersonate_str); 142 krb5_get_creds_opt_set_impersonate(context, opt, impersonate); 143 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_NO_STORE); 144 } 145 146 if (out_cache_str) 147 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_NO_STORE); 148 149 if (forwardable_flag) 150 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_FORWARDABLE); 151 if (!transit_flag) 152 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_NO_TRANSIT_CHECK); 153 if (canonicalize_flag) 154 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_CANONICALIZE); 155 156 if (delegation_cred_str) { 157 krb5_ccache id; 158 krb5_creds c, mc; 159 Ticket ticket; 160 161 krb5_cc_clear_mcred(&mc); 162 ret = krb5_cc_get_principal(context, cache, &mc.server); 163 if (ret) 164 krb5_err (context, 1, ret, "krb5_cc_get_principal"); 165 166 ret = krb5_cc_resolve(context, delegation_cred_str, &id); 167 if(ret) 168 krb5_err (context, 1, ret, "krb5_cc_resolve"); 169 170 ret = krb5_cc_retrieve_cred(context, id, 0, &mc, &c); 171 if(ret) 172 krb5_err (context, 1, ret, "krb5_cc_retrieve_cred"); 173 174 ret = decode_Ticket(c.ticket.data, c.ticket.length, &ticket, NULL); 175 if (ret) { 176 krb5_clear_error_message(context); 177 krb5_err (context, 1, ret, "decode_Ticket"); 178 } 179 krb5_free_cred_contents(context, &c); 180 181 ret = krb5_get_creds_opt_set_ticket(context, opt, &ticket); 182 if(ret) 183 krb5_err (context, 1, ret, "krb5_get_creds_opt_set_ticket"); 184 free_Ticket(&ticket); 185 186 krb5_cc_close (context, id); 187 krb5_free_principal(context, mc.server); 188 189 krb5_get_creds_opt_add_options(context, opt, 190 KRB5_GC_CONSTRAINED_DELEGATION); 191 } 192 193 ret = krb5_parse_name(context, argv[0], &server); 194 if (ret) 195 krb5_err (context, 1, ret, "krb5_parse_name %s", argv[0]); 196 197 if (nametype_str) { 198 int32_t nametype; 199 200 ret = krb5_parse_nametype(context, nametype_str, &nametype); 201 if (ret) 202 krb5_err(context, 1, ret, "krb5_parse_nametype"); 203 204 server->name.name_type = (NAME_TYPE)nametype; 205 } 206 207 ret = krb5_get_creds(context, opt, cache, server, &out); 208 if (ret) 209 krb5_err (context, 1, ret, "krb5_get_creds"); 210 211 if (out_cache_str) { 212 krb5_ccache id; 213 214 ret = krb5_cc_resolve(context, out_cache_str, &id); 215 if(ret) 216 krb5_err (context, 1, ret, "krb5_cc_resolve"); 217 218 ret = krb5_cc_initialize(context, id, out->client); 219 if(ret) 220 krb5_err (context, 1, ret, "krb5_cc_initialize"); 221 222 ret = krb5_cc_store_cred(context, id, out); 223 if(ret) 224 krb5_err (context, 1, ret, "krb5_cc_store_cred"); 225 krb5_cc_close (context, id); 226 } 227 228 krb5_free_creds(context, out); 229 krb5_free_principal(context, server); 230 krb5_get_creds_opt_free(context, opt); 231 krb5_cc_close (context, cache); 232 krb5_free_context (context); 233 234 return 0; 235} 236