1 /* 2 * hostapd / main() 3 * Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15 #include "utils/includes.h" 16 #ifndef CONFIG_NATIVE_WINDOWS 17 #include <syslog.h> 18 #endif /* CONFIG_NATIVE_WINDOWS */ 19 20 #include "utils/common.h" 21 #include "utils/eloop.h" 22 #include "crypto/tls.h" 23 #include "common/version.h" 24 #include "drivers/driver.h" 25 #include "eap_server/eap.h" 26 #include "eap_server/tncs.h" 27 #include "ap/hostapd.h" 28 #include "ap/ap_config.h" 29 #include "config_file.h" 30 #include "eap_register.h" 31 #include "dump_state.h" 32 #include "ctrl_iface.h" 33 34 35 extern int wpa_debug_level; 36 extern int wpa_debug_show_keys; 37 extern int wpa_debug_timestamp; 38 39 40 struct hapd_interfaces { 41 size_t count; 42 struct hostapd_iface **iface; 43 }; 44 45 46 static int hostapd_for_each_interface(struct hapd_interfaces *interfaces, 47 int (*cb)(struct hostapd_iface *iface, 48 void *ctx), void *ctx) 49 { 50 size_t i; 51 int ret; 52 53 for (i = 0; i < interfaces->count; i++) { 54 ret = cb(interfaces->iface[i], ctx); 55 if (ret) 56 return ret; 57 } 58 59 return 0; 60 } 61 62 63 #ifndef CONFIG_NO_HOSTAPD_LOGGER 64 static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module, 65 int level, const char *txt, size_t len) 66 { 67 struct hostapd_data *hapd = ctx; 68 char *format, *module_str; 69 int maxlen; 70 int conf_syslog_level, conf_stdout_level; 71 unsigned int conf_syslog, conf_stdout; 72 73 maxlen = len + 100; 74 format = os_malloc(maxlen); 75 if (!format) 76 return; 77 78 if (hapd && hapd->conf) { 79 conf_syslog_level = hapd->conf->logger_syslog_level; 80 conf_stdout_level = hapd->conf->logger_stdout_level; 81 conf_syslog = hapd->conf->logger_syslog; 82 conf_stdout = hapd->conf->logger_stdout; 83 } else { 84 conf_syslog_level = conf_stdout_level = 0; 85 conf_syslog = conf_stdout = (unsigned int) -1; 86 } 87 88 switch (module) { 89 case HOSTAPD_MODULE_IEEE80211: 90 module_str = "IEEE 802.11"; 91 break; 92 case HOSTAPD_MODULE_IEEE8021X: 93 module_str = "IEEE 802.1X"; 94 break; 95 case HOSTAPD_MODULE_RADIUS: 96 module_str = "RADIUS"; 97 break; 98 case HOSTAPD_MODULE_WPA: 99 module_str = "WPA"; 100 break; 101 case HOSTAPD_MODULE_DRIVER: 102 module_str = "DRIVER"; 103 break; 104 case HOSTAPD_MODULE_IAPP: 105 module_str = "IAPP"; 106 break; 107 case HOSTAPD_MODULE_MLME: 108 module_str = "MLME"; 109 break; 110 default: 111 module_str = NULL; 112 break; 113 } 114 115 if (hapd && hapd->conf && addr) 116 os_snprintf(format, maxlen, "%s: STA " MACSTR "%s%s: %s", 117 hapd->conf->iface, MAC2STR(addr), 118 module_str ? " " : "", module_str, txt); 119 else if (hapd && hapd->conf) 120 os_snprintf(format, maxlen, "%s:%s%s %s", 121 hapd->conf->iface, module_str ? " " : "", 122 module_str, txt); 123 else if (addr) 124 os_snprintf(format, maxlen, "STA " MACSTR "%s%s: %s", 125 MAC2STR(addr), module_str ? " " : "", 126 module_str, txt); 127 else 128 os_snprintf(format, maxlen, "%s%s%s", 129 module_str, module_str ? ": " : "", txt); 130 131 if ((conf_stdout & module) && level >= conf_stdout_level) { 132 wpa_debug_print_timestamp(); 133 printf("%s\n", format); 134 } 135 136 #ifndef CONFIG_NATIVE_WINDOWS 137 if ((conf_syslog & module) && level >= conf_syslog_level) { 138 int priority; 139 switch (level) { 140 case HOSTAPD_LEVEL_DEBUG_VERBOSE: 141 case HOSTAPD_LEVEL_DEBUG: 142 priority = LOG_DEBUG; 143 break; 144 case HOSTAPD_LEVEL_INFO: 145 priority = LOG_INFO; 146 break; 147 case HOSTAPD_LEVEL_NOTICE: 148 priority = LOG_NOTICE; 149 break; 150 case HOSTAPD_LEVEL_WARNING: 151 priority = LOG_WARNING; 152 break; 153 default: 154 priority = LOG_INFO; 155 break; 156 } 157 syslog(priority, "%s", format); 158 } 159 #endif /* CONFIG_NATIVE_WINDOWS */ 160 161 os_free(format); 162 } 163 #endif /* CONFIG_NO_HOSTAPD_LOGGER */ 164 165 166 /** 167 * hostapd_init - Allocate and initialize per-interface data 168 * @config_file: Path to the configuration file 169 * Returns: Pointer to the allocated interface data or %NULL on failure 170 * 171 * This function is used to allocate main data structures for per-interface 172 * data. The allocated data buffer will be freed by calling 173 * hostapd_cleanup_iface(). 174 */ 175 static struct hostapd_iface * hostapd_init(const char *config_file) 176 { 177 struct hostapd_iface *hapd_iface = NULL; 178 struct hostapd_config *conf = NULL; 179 struct hostapd_data *hapd; 180 size_t i; 181 182 hapd_iface = os_zalloc(sizeof(*hapd_iface)); 183 if (hapd_iface == NULL) 184 goto fail; 185 186 hapd_iface->reload_config = hostapd_reload_config; 187 hapd_iface->config_read_cb = hostapd_config_read; 188 hapd_iface->config_fname = os_strdup(config_file); 189 if (hapd_iface->config_fname == NULL) 190 goto fail; 191 hapd_iface->ctrl_iface_init = hostapd_ctrl_iface_init; 192 hapd_iface->ctrl_iface_deinit = hostapd_ctrl_iface_deinit; 193 hapd_iface->for_each_interface = hostapd_for_each_interface; 194 195 conf = hostapd_config_read(hapd_iface->config_fname); 196 if (conf == NULL) 197 goto fail; 198 hapd_iface->conf = conf; 199 200 hapd_iface->num_bss = conf->num_bss; 201 hapd_iface->bss = os_zalloc(conf->num_bss * 202 sizeof(struct hostapd_data *)); 203 if (hapd_iface->bss == NULL) 204 goto fail; 205 206 for (i = 0; i < conf->num_bss; i++) { 207 hapd = hapd_iface->bss[i] = 208 hostapd_alloc_bss_data(hapd_iface, conf, 209 &conf->bss[i]); 210 if (hapd == NULL) 211 goto fail; 212 hapd->msg_ctx = hapd; 213 } 214 215 return hapd_iface; 216 217 fail: 218 if (conf) 219 hostapd_config_free(conf); 220 if (hapd_iface) { 221 os_free(hapd_iface->config_fname); 222 os_free(hapd_iface->bss); 223 os_free(hapd_iface); 224 } 225 return NULL; 226 } 227 228 229 static int hostapd_driver_init(struct hostapd_iface *iface) 230 { 231 struct wpa_init_params params; 232 size_t i; 233 struct hostapd_data *hapd = iface->bss[0]; 234 struct hostapd_bss_config *conf = hapd->conf; 235 u8 *b = conf->bssid; 236 237 if (hapd->driver == NULL || hapd->driver->hapd_init == NULL) { 238 wpa_printf(MSG_ERROR, "No hostapd driver wrapper available"); 239 return -1; 240 } 241 242 /* Initialize the driver interface */ 243 if (!(b[0] | b[1] | b[2] | b[3] | b[4] | b[5])) 244 b = NULL; 245 246 os_memset(¶ms, 0, sizeof(params)); 247 params.bssid = b; 248 params.ifname = hapd->conf->iface; 249 params.ssid = (const u8 *) hapd->conf->ssid.ssid; 250 params.ssid_len = hapd->conf->ssid.ssid_len; 251 params.test_socket = hapd->conf->test_socket; 252 params.use_pae_group_addr = hapd->conf->use_pae_group_addr; 253 254 params.num_bridge = hapd->iface->num_bss; 255 params.bridge = os_zalloc(hapd->iface->num_bss * sizeof(char *)); 256 if (params.bridge == NULL) 257 return -1; 258 for (i = 0; i < hapd->iface->num_bss; i++) { 259 struct hostapd_data *bss = hapd->iface->bss[i]; 260 if (bss->conf->bridge[0]) 261 params.bridge[i] = bss->conf->bridge; 262 } 263 264 params.own_addr = hapd->own_addr; 265 266 hapd->drv_priv = hapd->driver->hapd_init(hapd, ¶ms); 267 os_free(params.bridge); 268 if (hapd->drv_priv == NULL) { 269 wpa_printf(MSG_ERROR, "%s driver initialization failed.", 270 hapd->driver->name); 271 hapd->driver = NULL; 272 return -1; 273 } 274 275 return 0; 276 } 277 278 279 static void hostapd_interface_deinit_free(struct hostapd_iface *iface) 280 { 281 const struct wpa_driver_ops *driver; 282 void *drv_priv; 283 if (iface == NULL) 284 return; 285 driver = iface->bss[0]->driver; 286 drv_priv = iface->bss[0]->drv_priv; 287 hostapd_interface_deinit(iface); 288 if (driver && driver->hapd_deinit) 289 driver->hapd_deinit(drv_priv); 290 hostapd_interface_free(iface); 291 } 292 293 294 static struct hostapd_iface * 295 hostapd_interface_init(struct hapd_interfaces *interfaces, 296 const char *config_fname, int debug) 297 { 298 struct hostapd_iface *iface; 299 int k; 300 301 wpa_printf(MSG_ERROR, "Configuration file: %s", config_fname); 302 iface = hostapd_init(config_fname); 303 if (!iface) 304 return NULL; 305 iface->interfaces = interfaces; 306 307 for (k = 0; k < debug; k++) { 308 if (iface->bss[0]->conf->logger_stdout_level > 0) 309 iface->bss[0]->conf->logger_stdout_level--; 310 } 311 312 if (hostapd_driver_init(iface) || 313 hostapd_setup_interface(iface)) { 314 hostapd_interface_deinit_free(iface); 315 return NULL; 316 } 317 318 return iface; 319 } 320 321 322 /** 323 * handle_term - SIGINT and SIGTERM handler to terminate hostapd process 324 */ 325 static void handle_term(int sig, void *signal_ctx) 326 { 327 wpa_printf(MSG_DEBUG, "Signal %d received - terminating", sig); 328 eloop_terminate(); 329 } 330 331 332 #ifndef CONFIG_NATIVE_WINDOWS 333 334 static int handle_reload_iface(struct hostapd_iface *iface, void *ctx) 335 { 336 if (hostapd_reload_config(iface) < 0) { 337 wpa_printf(MSG_WARNING, "Failed to read new configuration " 338 "file - continuing with old."); 339 } 340 return 0; 341 } 342 343 344 /** 345 * handle_reload - SIGHUP handler to reload configuration 346 */ 347 static void handle_reload(int sig, void *signal_ctx) 348 { 349 struct hapd_interfaces *interfaces = signal_ctx; 350 wpa_printf(MSG_DEBUG, "Signal %d received - reloading configuration", 351 sig); 352 hostapd_for_each_interface(interfaces, handle_reload_iface, NULL); 353 } 354 355 356 static void handle_dump_state(int sig, void *signal_ctx) 357 { 358 #ifdef HOSTAPD_DUMP_STATE 359 struct hapd_interfaces *interfaces = signal_ctx; 360 hostapd_for_each_interface(interfaces, handle_dump_state_iface, NULL); 361 #endif /* HOSTAPD_DUMP_STATE */ 362 } 363 #endif /* CONFIG_NATIVE_WINDOWS */ 364 365 366 static int hostapd_global_init(struct hapd_interfaces *interfaces) 367 { 368 hostapd_logger_register_cb(hostapd_logger_cb); 369 370 if (eap_server_register_methods()) { 371 wpa_printf(MSG_ERROR, "Failed to register EAP methods"); 372 return -1; 373 } 374 375 if (eloop_init()) { 376 wpa_printf(MSG_ERROR, "Failed to initialize event loop"); 377 return -1; 378 } 379 380 #ifndef CONFIG_NATIVE_WINDOWS 381 eloop_register_signal(SIGHUP, handle_reload, interfaces); 382 eloop_register_signal(SIGUSR1, handle_dump_state, interfaces); 383 #endif /* CONFIG_NATIVE_WINDOWS */ 384 eloop_register_signal_terminate(handle_term, interfaces); 385 386 #ifndef CONFIG_NATIVE_WINDOWS 387 openlog("hostapd", 0, LOG_DAEMON); 388 #endif /* CONFIG_NATIVE_WINDOWS */ 389 390 return 0; 391 } 392 393 394 static void hostapd_global_deinit(const char *pid_file) 395 { 396 #ifdef EAP_SERVER_TNC 397 tncs_global_deinit(); 398 #endif /* EAP_SERVER_TNC */ 399 400 eloop_destroy(); 401 402 #ifndef CONFIG_NATIVE_WINDOWS 403 closelog(); 404 #endif /* CONFIG_NATIVE_WINDOWS */ 405 406 eap_server_unregister_methods(); 407 408 os_daemonize_terminate(pid_file); 409 } 410 411 412 static int hostapd_global_run(struct hapd_interfaces *ifaces, int daemonize, 413 const char *pid_file) 414 { 415 #ifdef EAP_SERVER_TNC 416 int tnc = 0; 417 size_t i, k; 418 419 for (i = 0; !tnc && i < ifaces->count; i++) { 420 for (k = 0; k < ifaces->iface[i]->num_bss; k++) { 421 if (ifaces->iface[i]->bss[0]->conf->tnc) { 422 tnc++; 423 break; 424 } 425 } 426 } 427 428 if (tnc && tncs_global_init() < 0) { 429 wpa_printf(MSG_ERROR, "Failed to initialize TNCS"); 430 return -1; 431 } 432 #endif /* EAP_SERVER_TNC */ 433 434 if (daemonize && os_daemonize(pid_file)) { 435 perror("daemon"); 436 return -1; 437 } 438 439 eloop_run(); 440 441 return 0; 442 } 443 444 445 static void show_version(void) 446 { 447 fprintf(stderr, 448 "hostapd v" VERSION_STR "\n" 449 "User space daemon for IEEE 802.11 AP management,\n" 450 "IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n" 451 "Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi> " 452 "and contributors\n"); 453 } 454 455 456 static void usage(void) 457 { 458 show_version(); 459 fprintf(stderr, 460 "\n" 461 "usage: hostapd [-hdBKtv] [-P <PID file>] " 462 "<configuration file(s)>\n" 463 "\n" 464 "options:\n" 465 " -h show this usage\n" 466 " -d show more debug messages (-dd for even more)\n" 467 " -B run daemon in the background\n" 468 " -P PID file\n" 469 " -K include key data in debug messages\n" 470 " -t include timestamps in some debug messages\n" 471 " -v show hostapd version\n"); 472 473 exit(1); 474 } 475 476 477 int main(int argc, char *argv[]) 478 { 479 struct hapd_interfaces interfaces; 480 int ret = 1; 481 size_t i; 482 int c, debug = 0, daemonize = 0; 483 char *pid_file = NULL; 484 485 if (os_program_init()) 486 return -1; 487 488 for (;;) { 489 c = getopt(argc, argv, "BdhKP:tv"); 490 if (c < 0) 491 break; 492 switch (c) { 493 case 'h': 494 usage(); 495 break; 496 case 'd': 497 debug++; 498 if (wpa_debug_level > 0) 499 wpa_debug_level--; 500 break; 501 case 'B': 502 daemonize++; 503 break; 504 case 'K': 505 wpa_debug_show_keys++; 506 break; 507 case 'P': 508 os_free(pid_file); 509 pid_file = os_rel2abs_path(optarg); 510 break; 511 case 't': 512 wpa_debug_timestamp++; 513 break; 514 case 'v': 515 show_version(); 516 exit(1); 517 break; 518 519 default: 520 usage(); 521 break; 522 } 523 } 524 525 if (optind == argc) 526 usage(); 527 528 interfaces.count = argc - optind; 529 interfaces.iface = os_malloc(interfaces.count * 530 sizeof(struct hostapd_iface *)); 531 if (interfaces.iface == NULL) { 532 wpa_printf(MSG_ERROR, "malloc failed\n"); 533 return -1; 534 } 535 536 if (hostapd_global_init(&interfaces)) 537 return -1; 538 539 /* Initialize interfaces */ 540 for (i = 0; i < interfaces.count; i++) { 541 interfaces.iface[i] = hostapd_interface_init(&interfaces, 542 argv[optind + i], 543 debug); 544 if (!interfaces.iface[i]) 545 goto out; 546 } 547 548 if (hostapd_global_run(&interfaces, daemonize, pid_file)) 549 goto out; 550 551 ret = 0; 552 553 out: 554 /* Deinitialize all interfaces */ 555 for (i = 0; i < interfaces.count; i++) 556 hostapd_interface_deinit_free(interfaces.iface[i]); 557 os_free(interfaces.iface); 558 559 hostapd_global_deinit(pid_file); 560 os_free(pid_file); 561 562 os_program_deinit(); 563 564 return ret; 565 } 566