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 void usage (int ret) __attribute__((noreturn)); 37 38 39static char *cache_str; 40static char *out_cache_str; 41static char *delegation_cred_str; 42static char *etype_str; 43static int transit_flag = 1; 44static int forwardable_flag; 45static int canonicalize_flag; 46static char *impersonate_str; 47static char *nametype_str; 48static int version_flag; 49static int help_flag; 50 51struct getargs args[] = { 52 { "cache", 'c', arg_string, &cache_str, 53 NP_("credential cache to use", ""), "cache"}, 54 { "out-cache", 0, arg_string, &out_cache_str, 55 NP_("credential cache to store credential in", ""), "cache"}, 56 { "delegation-credential-cache",0,arg_string, &delegation_cred_str, 57 NP_("where to find the ticket use for delegation", ""), "cache"}, 58 { "canonicalize", 0, arg_flag, &canonicalize_flag, 59 NP_("canonicalize the principal", ""), NULL }, 60 { "forwardable", 0, arg_flag, &forwardable_flag, 61 NP_("forwardable ticket requested", ""), NULL}, 62 { "transit-check", 0, arg_negative_flag, &transit_flag, NULL, NULL }, 63 { "enctype", 'e', arg_string, &etype_str, 64 NP_("encryption type to use", ""), "enctype"}, 65 { "impersonate", 0, arg_string, &impersonate_str, 66 NP_("client to impersonate", ""), "principal"}, 67 { "name-type", 0, arg_string, &nametype_str, NULL, NULL }, 68 { "version", 0, arg_flag, &version_flag, NULL, NULL }, 69 { "help", 0, arg_flag, &help_flag, NULL, NULL } 70}; 71 72static void 73usage (int ret) 74{ 75 arg_printusage (args, 76 sizeof(args)/sizeof(*args), 77 NULL, 78 "service"); 79 exit (ret); 80} 81 82int 83main(int argc, char **argv) 84{ 85 krb5_error_code ret; 86 krb5_context context; 87 krb5_ccache cache; 88 krb5_creds *out; 89 int optidx = 0; 90 krb5_get_creds_opt opt; 91 krb5_principal server; 92 krb5_principal impersonate = NULL; 93 94 setprogname (argv[0]); 95 96 ret = krb5_init_context (&context); 97 if (ret) 98 errx(1, "krb5_init_context failed: %d", ret); 99 100 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx)) 101 usage(1); 102 103 if (help_flag) 104 usage (0); 105 106 if(version_flag) { 107 print_version(NULL); 108 exit(0); 109 } 110 111 argc -= optidx; 112 argv += optidx; 113 114 if (argc != 1) 115 usage (1); 116 117 if(cache_str) { 118 ret = krb5_cc_resolve(context, cache_str, &cache); 119 if (ret) 120 krb5_err (context, 1, ret, "%s", cache_str); 121 } else { 122 ret = krb5_cc_default (context, &cache); 123 if (ret) 124 krb5_err (context, 1, ret, "krb5_cc_resolve"); 125 } 126 127 ret = krb5_get_creds_opt_alloc(context, &opt); 128 if (ret) 129 krb5_err (context, 1, ret, "krb5_get_creds_opt_alloc"); 130 131 if (etype_str) { 132 krb5_enctype enctype; 133 134 ret = krb5_string_to_enctype(context, etype_str, &enctype); 135 if (ret) 136 krb5_errx (context, 1, N_("unrecognized enctype: %s", ""), 137 etype_str); 138 krb5_get_creds_opt_set_enctype(context, opt, enctype); 139 } 140 141 if (impersonate_str) { 142 ret = krb5_parse_name(context, impersonate_str, &impersonate); 143 if (ret) 144 krb5_err (context, 1, ret, "krb5_parse_name %s", impersonate_str); 145 krb5_get_creds_opt_set_impersonate(context, opt, impersonate); 146 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_NO_STORE); 147 } 148 149 if (out_cache_str) 150 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_NO_STORE); 151 152 if (forwardable_flag) 153 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_FORWARDABLE); 154 if (!transit_flag) 155 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_NO_TRANSIT_CHECK); 156 if (canonicalize_flag) 157 krb5_get_creds_opt_add_options(context, opt, KRB5_GC_CANONICALIZE); 158 159 if (delegation_cred_str) { 160 krb5_ccache id; 161 krb5_creds c, mc; 162 Ticket ticket; 163 164 krb5_cc_clear_mcred(&mc); 165 ret = krb5_cc_get_principal(context, cache, &mc.server); 166 if (ret) 167 krb5_err (context, 1, ret, "krb5_cc_get_principal"); 168 169 ret = krb5_cc_resolve(context, delegation_cred_str, &id); 170 if(ret) 171 krb5_err (context, 1, ret, "krb5_cc_resolve"); 172 173 ret = krb5_cc_retrieve_cred(context, id, 0, &mc, &c); 174 if(ret) 175 krb5_err (context, 1, ret, "krb5_cc_retrieve_cred"); 176 177 ret = decode_Ticket(c.ticket.data, c.ticket.length, &ticket, NULL); 178 if (ret) { 179 krb5_clear_error_message(context); 180 krb5_err (context, 1, ret, "decode_Ticket"); 181 } 182 krb5_free_cred_contents(context, &c); 183 184 ret = krb5_get_creds_opt_set_ticket(context, opt, &ticket); 185 if(ret) 186 krb5_err (context, 1, ret, "krb5_get_creds_opt_set_ticket"); 187 free_Ticket(&ticket); 188 189 krb5_cc_close (context, id); 190 krb5_free_principal(context, mc.server); 191 192 krb5_get_creds_opt_add_options(context, opt, 193 KRB5_GC_CONSTRAINED_DELEGATION); 194 } 195 196 ret = krb5_parse_name(context, argv[0], &server); 197 if (ret) 198 krb5_err (context, 1, ret, "krb5_parse_name %s", argv[0]); 199 200 if (nametype_str) { 201 int32_t nametype; 202 203 ret = krb5_parse_nametype(context, nametype_str, &nametype); 204 if (ret) 205 krb5_err(context, 1, ret, "krb5_parse_nametype"); 206 207 server->name.name_type = (NAME_TYPE)nametype; 208 } 209 210 ret = krb5_get_creds(context, opt, cache, server, &out); 211 if (ret) 212 krb5_err (context, 1, ret, "krb5_get_creds"); 213 214 if (out_cache_str) { 215 krb5_ccache id; 216 217 ret = krb5_cc_resolve(context, out_cache_str, &id); 218 if(ret) 219 krb5_err (context, 1, ret, "krb5_cc_resolve"); 220 221 ret = krb5_cc_initialize(context, id, out->client); 222 if(ret) 223 krb5_err (context, 1, ret, "krb5_cc_initialize"); 224 225 ret = krb5_cc_store_cred(context, id, out); 226 if(ret) 227 krb5_err (context, 1, ret, "krb5_cc_store_cred"); 228 krb5_cc_close (context, id); 229 } 230 231 krb5_free_creds(context, out); 232 krb5_free_principal(context, server); 233 krb5_get_creds_opt_free(context, opt); 234 krb5_cc_close (context, cache); 235 krb5_free_context (context); 236 237 return 0; 238} 239