1/* 2 * Copyright (c) 1997-2007 Kungliga Tekniska Högskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Portions Copyright (c) 2009 Apple Inc. 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 "kdc_locl.h" 37#include <getarg.h> 38#include <parse_bytes.h> 39 40static void usage(int ret) __attribute__((noreturn)); 41 42 43struct dbinfo { 44 char *realm; 45 char *dbname; 46 char *mkey_file; 47 struct dbinfo *next; 48}; 49 50static char *config_file; /* location of kdc config file */ 51 52static int require_preauth = -1; /* 1 == require preauth for all principals */ 53static char *max_request_str; /* `max_request' as a string */ 54 55static int disable_des = -1; 56 57static int builtin_hdb_flag; 58static int help_flag; 59static int version_flag; 60 61static struct getarg_strings addresses_str; /* addresses to listen on */ 62 63char *runas_string; 64char *chroot_string; 65 66int listen_on_ipc = 1; 67int listen_on_network = 1; 68 69 70static struct getargs args[] = { 71 { 72 "config-file", 'c', arg_string, &config_file, 73 "location of config file", "file" 74 }, 75 { 76 "require-preauth", 'p', arg_negative_flag, &require_preauth, 77 "don't require pa-data in as-reqs", NULL 78 }, 79 { 80 "max-request", 0, arg_string, &max_request_str, 81 "max size for a kdc-request", "size" 82 }, 83 { "enable-http", 'H', arg_flag, &enable_http, "turn on HTTP support" }, 84 { "listen-on-ipc", 0, arg_flag, &listen_on_ipc, "listen on local IPC requests" }, 85 { "listen-on-network", 0, arg_flag, &listen_on_network, "listen on network requests" }, 86 87 { "ports", 'P', arg_string, &port_str, 88 "ports to listen to", "portspec" 89 }, 90#ifdef __APPLE__ 91 { "sandbox", 0, arg_negative_flag, &sandbox_flag, 92 "use sandbox or not" 93 }, 94#endif /* __APPLE__ */ 95#ifdef SUPPORT_DETACH 96#if DETACH_IS_DEFAULT 97 { 98 "detach", 'D', arg_negative_flag, &detach_from_console, 99 "don't detach from console", NULL 100 }, 101#else 102 { 103 "detach", 0 , arg_flag, &detach_from_console, 104 "detach from console", NULL 105 }, 106#endif 107#endif 108 { "addresses", 0, arg_strings, &addresses_str, 109 "addresses to listen on", "list of addresses" }, 110 { "disable-des", 0, arg_flag, &disable_des, 111 "disable DES", NULL }, 112 { "builtin-hdb", 0, arg_flag, &builtin_hdb_flag, 113 "list builtin hdb backends", NULL}, 114 { "runas-user", 0, arg_string, &runas_string, 115 "run as this user when connected to network", NULL 116 }, 117 { "chroot", 0, arg_string, &chroot_string, 118 "chroot directory to run in", NULL 119 }, 120 { "help", 'h', arg_flag, &help_flag, NULL, NULL }, 121 { "version", 'v', arg_flag, &version_flag, NULL, NULL } 122}; 123 124static int num_args = sizeof(args) / sizeof(args[0]); 125 126static void 127usage(int ret) 128{ 129 arg_printusage (args, num_args, NULL, ""); 130 exit (ret); 131} 132 133static void 134add_one_address (krb5_context context, const char *str, int first) 135{ 136 krb5_error_code ret; 137 krb5_addresses tmp; 138 139 ret = krb5_parse_address (context, str, &tmp); 140 if (ret) 141 krb5_err (context, 1, ret, "parse_address `%s'", str); 142 if (first) 143 krb5_copy_addresses(context, &tmp, &explicit_addresses); 144 else 145 krb5_append_addresses(context, &explicit_addresses, &tmp); 146 krb5_free_addresses (context, &tmp); 147} 148 149krb5_kdc_configuration * 150configure(krb5_context context, int argc, char **argv) 151{ 152 krb5_kdc_configuration *config; 153 krb5_error_code ret; 154 int optidx = 0; 155 const char *p; 156 157 while(getarg(args, num_args, argc, argv, &optidx)) 158 warnx("error at argument `%s'", argv[optidx]); 159 160 if(help_flag) 161 usage (0); 162 163 if (version_flag) { 164 print_version(NULL); 165 exit(0); 166 } 167 168 if (builtin_hdb_flag) { 169 char *list; 170 ret = hdb_list_builtin(context, &list); 171 if (ret) 172 krb5_err(context, 1, ret, "listing builtin hdb backends"); 173 printf("builtin hdb backends: %s\n", list); 174 free(list); 175 exit(0); 176 } 177 178 argc -= optidx; 179 180 if (argc != 0) 181 usage(1); 182 183 { 184 char **files; 185 186 if (config_file == NULL) { 187 asprintf(&config_file, "%s/kdc.conf", hdb_db_dir(context)); 188 if (config_file == NULL) 189 errx(1, "out of memory"); 190 } 191 192 ret = krb5_prepend_config_files_default(config_file, &files); 193 if (ret) 194 krb5_err(context, 1, ret, "getting configuration files"); 195 196 ret = krb5_set_config_files(context, files); 197 krb5_free_config_files(files); 198 if(ret) 199 krb5_err(context, 1, ret, "reading configuration files"); 200 } 201 202 ret = krb5_kdc_get_config(context, &config); 203 if (ret) 204 krb5_err(context, 1, ret, "krb5_kdc_default_config"); 205 206 kdc_openlog(context, "kdc", config); 207 208 ret = krb5_kdc_set_dbinfo(context, config); 209 if (ret) 210 krb5_err(context, 1, ret, "krb5_kdc_set_dbinfo"); 211 212 if(max_request_str) 213 max_request_tcp = max_request_udp = parse_bytes(max_request_str, NULL); 214 215 if(max_request_tcp == 0){ 216 p = krb5_config_get_string (context, 217 NULL, 218 "kdc", 219 "max-request", 220 NULL); 221 if(p) 222 max_request_tcp = max_request_udp = parse_bytes(p, NULL); 223 } 224 225 if(require_preauth != -1) 226 config->require_preauth = require_preauth; 227 228 if(port_str == NULL){ 229 p = krb5_config_get_string(context, NULL, "kdc", "ports", NULL); 230 if (p != NULL) 231 port_str = strdup(p); 232 } 233 234 explicit_addresses.len = 0; 235 236 if (addresses_str.num_strings) { 237 int i; 238 239 for (i = 0; i < addresses_str.num_strings; ++i) 240 add_one_address (context, addresses_str.strings[i], i == 0); 241 free_getarg_strings (&addresses_str); 242 } else { 243 char **foo = krb5_config_get_strings (context, NULL, 244 "kdc", "addresses", NULL); 245 246 if (foo != NULL) { 247 add_one_address (context, *foo++, TRUE); 248 while (*foo) 249 add_one_address (context, *foo++, FALSE); 250 } 251 } 252 253 if(enable_http == -1) 254 enable_http = krb5_config_get_bool(context, NULL, "kdc", 255 "enable-http", NULL); 256 257 if(request_log == NULL) 258 request_log = krb5_config_get_string(context, NULL, 259 "kdc", 260 "kdc-request-log", 261 NULL); 262 263 if (krb5_config_get_string(context, NULL, "kdc", 264 "enforce-transited-policy", NULL)) 265 krb5_errx(context, 1, "enforce-transited-policy deprecated, " 266 "use [kdc]transited-policy instead"); 267 268#ifdef SUPPORT_DETACH 269 if(detach_from_console == -1) 270 detach_from_console = krb5_config_get_bool_default(context, NULL, 271 DETACH_IS_DEFAULT, 272 "kdc", 273 "detach", NULL); 274#endif /* SUPPORT_DETACH */ 275 276 if(max_request_tcp == 0) 277 max_request_tcp = 64 * 1024; 278 if(max_request_udp == 0) 279 max_request_udp = 64 * 1024; 280 281 if (port_str == NULL) 282 port_str = "+"; 283 284#ifdef __APPLE__ 285 if (config->lkdc_realm == NULL) { 286 unsigned int n; 287 288 for (n = 0; n < config->num_db; n++) { 289 char **realms = NULL, **r; 290 291 if (config->db[n]->hdb_get_realms == NULL) 292 continue; 293 294 ret = (config->db[n]->hdb_get_realms)(context, config->db[n], &realms); 295 if (ret == 0 && realms) { 296 for (r = realms; *r; r++) { 297 if (krb5_realm_is_lkdc(*r)) { 298 config->lkdc_realm = strdup(*r); 299 break; 300 } 301 } 302 krb5_free_host_realm(context, realms); 303 } 304 if (config->lkdc_realm) 305 break; 306 } 307 } 308#endif 309 310 311 if(disable_des == -1) 312 disable_des = krb5_config_get_bool_default(context, NULL, 313 FALSE, 314 "kdc", 315 "disable-des", NULL); 316 if(disable_des) { 317 krb5_enctype_disable(context, ETYPE_DES_CBC_CRC); 318 krb5_enctype_disable(context, ETYPE_DES_CBC_MD4); 319 krb5_enctype_disable(context, ETYPE_DES_CBC_MD5); 320 krb5_enctype_disable(context, ETYPE_DES_CBC_NONE); 321 krb5_enctype_disable(context, ETYPE_DES_CFB64_NONE); 322 krb5_enctype_disable(context, ETYPE_DES_PCBC_NONE); 323 } 324 325 krb5_kdc_windc_init(context); 326 327 krb5_kdc_pkinit_config(context, config); 328 329 return config; 330} 331