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