1 /* 2 * hostapd / main() 3 * Copyright (c) 2002-2011, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "utils/includes.h" 10 #ifndef CONFIG_NATIVE_WINDOWS 11 #include <syslog.h> 12 #endif /* CONFIG_NATIVE_WINDOWS */ 13 14 #include "utils/common.h" 15 #include "utils/eloop.h" 16 #include "crypto/random.h" 17 #include "crypto/tls.h" 18 #include "common/version.h" 19 #include "drivers/driver.h" 20 #include "eap_server/eap.h" 21 #include "eap_server/tncs.h" 22 #include "ap/hostapd.h" 23 #include "ap/ap_config.h" 24 #include "config_file.h" 25 #include "eap_register.h" 26 #include "dump_state.h" 27 #include "ctrl_iface.h" 28 29 30 extern int wpa_debug_level; 31 extern int wpa_debug_show_keys; 32 extern int wpa_debug_timestamp; 33 34 extern struct wpa_driver_ops *wpa_drivers[]; 35 36 37 struct hapd_global { 38 void **drv_priv; 39 size_t drv_count; 40 }; 41 42 static struct hapd_global global; 43 44 45 struct hapd_interfaces { 46 size_t count; 47 struct hostapd_iface **iface; 48 }; 49 50 51 static int hostapd_for_each_interface(struct hapd_interfaces *interfaces, 52 int (*cb)(struct hostapd_iface *iface, 53 void *ctx), void *ctx) 54 { 55 size_t i; 56 int ret; 57 58 for (i = 0; i < interfaces->count; i++) { 59 ret = cb(interfaces->iface[i], ctx); 60 if (ret) 61 return ret; 62 } 63 64 return 0; 65 } 66 67 68 #ifndef CONFIG_NO_HOSTAPD_LOGGER 69 static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module, 70 int level, const char *txt, size_t len) 71 { 72 struct hostapd_data *hapd = ctx; 73 char *format, *module_str; 74 int maxlen; 75 int conf_syslog_level, conf_stdout_level; 76 unsigned int conf_syslog, conf_stdout; 77 78 maxlen = len + 100; 79 format = os_malloc(maxlen); 80 if (!format) 81 return; 82 83 if (hapd && hapd->conf) { 84 conf_syslog_level = hapd->conf->logger_syslog_level; 85 conf_stdout_level = hapd->conf->logger_stdout_level; 86 conf_syslog = hapd->conf->logger_syslog; 87 conf_stdout = hapd->conf->logger_stdout; 88 } else { 89 conf_syslog_level = conf_stdout_level = 0; 90 conf_syslog = conf_stdout = (unsigned int) -1; 91 } 92 93 switch (module) { 94 case HOSTAPD_MODULE_IEEE80211: 95 module_str = "IEEE 802.11"; 96 break; 97 case HOSTAPD_MODULE_IEEE8021X: 98 module_str = "IEEE 802.1X"; 99 break; 100 case HOSTAPD_MODULE_RADIUS: 101 module_str = "RADIUS"; 102 break; 103 case HOSTAPD_MODULE_WPA: 104 module_str = "WPA"; 105 break; 106 case HOSTAPD_MODULE_DRIVER: 107 module_str = "DRIVER"; 108 break; 109 case HOSTAPD_MODULE_IAPP: 110 module_str = "IAPP"; 111 break; 112 case HOSTAPD_MODULE_MLME: 113 module_str = "MLME"; 114 break; 115 default: 116 module_str = NULL; 117 break; 118 } 119 120 if (hapd && hapd->conf && addr) 121 os_snprintf(format, maxlen, "%s: STA " MACSTR "%s%s: %s", 122 hapd->conf->iface, MAC2STR(addr), 123 module_str ? " " : "", module_str, txt); 124 else if (hapd && hapd->conf) 125 os_snprintf(format, maxlen, "%s:%s%s %s", 126 hapd->conf->iface, module_str ? " " : "", 127 module_str, txt); 128 else if (addr) 129 os_snprintf(format, maxlen, "STA " MACSTR "%s%s: %s", 130 MAC2STR(addr), module_str ? " " : "", 131 module_str, txt); 132 else 133 os_snprintf(format, maxlen, "%s%s%s", 134 module_str, module_str ? ": " : "", txt); 135 136 if ((conf_stdout & module) && level >= conf_stdout_level) { 137 wpa_debug_print_timestamp(); 138 printf("%s\n", format); 139 } 140 141 #ifndef CONFIG_NATIVE_WINDOWS 142 if ((conf_syslog & module) && level >= conf_syslog_level) { 143 int priority; 144 switch (level) { 145 case HOSTAPD_LEVEL_DEBUG_VERBOSE: 146 case HOSTAPD_LEVEL_DEBUG: 147 priority = LOG_DEBUG; 148 break; 149 case HOSTAPD_LEVEL_INFO: 150 priority = LOG_INFO; 151 break; 152 case HOSTAPD_LEVEL_NOTICE: 153 priority = LOG_NOTICE; 154 break; 155 case HOSTAPD_LEVEL_WARNING: 156 priority = LOG_WARNING; 157 break; 158 default: 159 priority = LOG_INFO; 160 break; 161 } 162 syslog(priority, "%s", format); 163 } 164 #endif /* CONFIG_NATIVE_WINDOWS */ 165 166 os_free(format); 167 } 168 #endif /* CONFIG_NO_HOSTAPD_LOGGER */ 169 170 171 /** 172 * hostapd_init - Allocate and initialize per-interface data 173 * @config_file: Path to the configuration file 174 * Returns: Pointer to the allocated interface data or %NULL on failure 175 * 176 * This function is used to allocate main data structures for per-interface 177 * data. The allocated data buffer will be freed by calling 178 * hostapd_cleanup_iface(). 179 */ 180 static struct hostapd_iface * hostapd_init(const char *config_file) 181 { 182 struct hostapd_iface *hapd_iface = NULL; 183 struct hostapd_config *conf = NULL; 184 struct hostapd_data *hapd; 185 size_t i; 186 187 hapd_iface = os_zalloc(sizeof(*hapd_iface)); 188 if (hapd_iface == NULL) 189 goto fail; 190 191 hapd_iface->reload_config = hostapd_reload_config; 192 hapd_iface->config_read_cb = hostapd_config_read; 193 hapd_iface->config_fname = os_strdup(config_file); 194 if (hapd_iface->config_fname == NULL) 195 goto fail; 196 hapd_iface->ctrl_iface_init = hostapd_ctrl_iface_init; 197 hapd_iface->ctrl_iface_deinit = hostapd_ctrl_iface_deinit; 198 hapd_iface->for_each_interface = hostapd_for_each_interface; 199 200 conf = hostapd_config_read(hapd_iface->config_fname); 201 if (conf == NULL) 202 goto fail; 203 hapd_iface->conf = conf; 204 205 hapd_iface->num_bss = conf->num_bss; 206 hapd_iface->bss = os_zalloc(conf->num_bss * 207 sizeof(struct hostapd_data *)); 208 if (hapd_iface->bss == NULL) 209 goto fail; 210 211 for (i = 0; i < conf->num_bss; i++) { 212 hapd = hapd_iface->bss[i] = 213 hostapd_alloc_bss_data(hapd_iface, conf, 214 &conf->bss[i]); 215 if (hapd == NULL) 216 goto fail; 217 hapd->msg_ctx = hapd; 218 } 219 220 return hapd_iface; 221 222 fail: 223 if (conf) 224 hostapd_config_free(conf); 225 if (hapd_iface) { 226 os_free(hapd_iface->config_fname); 227 os_free(hapd_iface->bss); 228 os_free(hapd_iface); 229 } 230 return NULL; 231 } 232 233 234 static int hostapd_driver_init(struct hostapd_iface *iface) 235 { 236 struct wpa_init_params params; 237 size_t i; 238 struct hostapd_data *hapd = iface->bss[0]; 239 struct hostapd_bss_config *conf = hapd->conf; 240 u8 *b = conf->bssid; 241 struct wpa_driver_capa capa; 242 243 if (hapd->driver == NULL || hapd->driver->hapd_init == NULL) { 244 wpa_printf(MSG_ERROR, "No hostapd driver wrapper available"); 245 return -1; 246 } 247 248 /* Initialize the driver interface */ 249 if (!(b[0] | b[1] | b[2] | b[3] | b[4] | b[5])) 250 b = NULL; 251 252 os_memset(¶ms, 0, sizeof(params)); 253 for (i = 0; wpa_drivers[i]; i++) { 254 if (wpa_drivers[i] != hapd->driver) 255 continue; 256 257 if (global.drv_priv[i] == NULL && 258 wpa_drivers[i]->global_init) { 259 global.drv_priv[i] = wpa_drivers[i]->global_init(); 260 if (global.drv_priv[i] == NULL) { 261 wpa_printf(MSG_ERROR, "Failed to initialize " 262 "driver '%s'", 263 wpa_drivers[i]->name); 264 return -1; 265 } 266 } 267 268 params.global_priv = global.drv_priv[i]; 269 break; 270 } 271 params.bssid = b; 272 params.ifname = hapd->conf->iface; 273 params.ssid = (const u8 *) hapd->conf->ssid.ssid; 274 params.ssid_len = hapd->conf->ssid.ssid_len; 275 params.test_socket = hapd->conf->test_socket; 276 params.use_pae_group_addr = hapd->conf->use_pae_group_addr; 277 278 params.num_bridge = hapd->iface->num_bss; 279 params.bridge = os_zalloc(hapd->iface->num_bss * sizeof(char *)); 280 if (params.bridge == NULL) 281 return -1; 282 for (i = 0; i < hapd->iface->num_bss; i++) { 283 struct hostapd_data *bss = hapd->iface->bss[i]; 284 if (bss->conf->bridge[0]) 285 params.bridge[i] = bss->conf->bridge; 286 } 287 288 params.own_addr = hapd->own_addr; 289 290 hapd->drv_priv = hapd->driver->hapd_init(hapd, ¶ms); 291 os_free(params.bridge); 292 if (hapd->drv_priv == NULL) { 293 wpa_printf(MSG_ERROR, "%s driver initialization failed.", 294 hapd->driver->name); 295 hapd->driver = NULL; 296 return -1; 297 } 298 299 if (hapd->driver->get_capa && 300 hapd->driver->get_capa(hapd->drv_priv, &capa) == 0) { 301 iface->drv_flags = capa.flags; 302 iface->probe_resp_offloads = capa.probe_resp_offloads; 303 } 304 305 return 0; 306 } 307 308 309 static void hostapd_interface_deinit_free(struct hostapd_iface *iface) 310 { 311 const struct wpa_driver_ops *driver; 312 void *drv_priv; 313 if (iface == NULL) 314 return; 315 driver = iface->bss[0]->driver; 316 drv_priv = iface->bss[0]->drv_priv; 317 hostapd_interface_deinit(iface); 318 if (driver && driver->hapd_deinit) 319 driver->hapd_deinit(drv_priv); 320 hostapd_interface_free(iface); 321 } 322 323 324 static struct hostapd_iface * 325 hostapd_interface_init(struct hapd_interfaces *interfaces, 326 const char *config_fname, int debug) 327 { 328 struct hostapd_iface *iface; 329 int k; 330 331 wpa_printf(MSG_ERROR, "Configuration file: %s", config_fname); 332 iface = hostapd_init(config_fname); 333 if (!iface) 334 return NULL; 335 iface->interfaces = interfaces; 336 337 for (k = 0; k < debug; k++) { 338 if (iface->bss[0]->conf->logger_stdout_level > 0) 339 iface->bss[0]->conf->logger_stdout_level--; 340 } 341 342 if (hostapd_driver_init(iface) || 343 hostapd_setup_interface(iface)) { 344 hostapd_interface_deinit_free(iface); 345 return NULL; 346 } 347 348 return iface; 349 } 350 351 352 /** 353 * handle_term - SIGINT and SIGTERM handler to terminate hostapd process 354 */ 355 static void handle_term(int sig, void *signal_ctx) 356 { 357 wpa_printf(MSG_DEBUG, "Signal %d received - terminating", sig); 358 eloop_terminate(); 359 } 360 361 362 #ifndef CONFIG_NATIVE_WINDOWS 363 364 static int handle_reload_iface(struct hostapd_iface *iface, void *ctx) 365 { 366 if (hostapd_reload_config(iface) < 0) { 367 wpa_printf(MSG_WARNING, "Failed to read new configuration " 368 "file - continuing with old."); 369 } 370 return 0; 371 } 372 373 374 /** 375 * handle_reload - SIGHUP handler to reload configuration 376 */ 377 static void handle_reload(int sig, void *signal_ctx) 378 { 379 struct hapd_interfaces *interfaces = signal_ctx; 380 wpa_printf(MSG_DEBUG, "Signal %d received - reloading configuration", 381 sig); 382 hostapd_for_each_interface(interfaces, handle_reload_iface, NULL); 383 } 384 385 386 static void handle_dump_state(int sig, void *signal_ctx) 387 { 388 #ifdef HOSTAPD_DUMP_STATE 389 struct hapd_interfaces *interfaces = signal_ctx; 390 hostapd_for_each_interface(interfaces, handle_dump_state_iface, NULL); 391 #endif /* HOSTAPD_DUMP_STATE */ 392 } 393 #endif /* CONFIG_NATIVE_WINDOWS */ 394 395 396 static int hostapd_global_init(struct hapd_interfaces *interfaces, 397 const char *entropy_file) 398 { 399 int i; 400 401 os_memset(&global, 0, sizeof(global)); 402 403 hostapd_logger_register_cb(hostapd_logger_cb); 404 405 if (eap_server_register_methods()) { 406 wpa_printf(MSG_ERROR, "Failed to register EAP methods"); 407 return -1; 408 } 409 410 if (eloop_init()) { 411 wpa_printf(MSG_ERROR, "Failed to initialize event loop"); 412 return -1; 413 } 414 415 random_init(entropy_file); 416 417 #ifndef CONFIG_NATIVE_WINDOWS 418 eloop_register_signal(SIGHUP, handle_reload, interfaces); 419 eloop_register_signal(SIGUSR1, handle_dump_state, interfaces); 420 #endif /* CONFIG_NATIVE_WINDOWS */ 421 eloop_register_signal_terminate(handle_term, interfaces); 422 423 #ifndef CONFIG_NATIVE_WINDOWS 424 openlog("hostapd", 0, LOG_DAEMON); 425 #endif /* CONFIG_NATIVE_WINDOWS */ 426 427 for (i = 0; wpa_drivers[i]; i++) 428 global.drv_count++; 429 if (global.drv_count == 0) { 430 wpa_printf(MSG_ERROR, "No drivers enabled"); 431 return -1; 432 } 433 global.drv_priv = os_zalloc(global.drv_count * sizeof(void *)); 434 if (global.drv_priv == NULL) 435 return -1; 436 437 return 0; 438 } 439 440 441 static void hostapd_global_deinit(const char *pid_file) 442 { 443 int i; 444 445 for (i = 0; wpa_drivers[i] && global.drv_priv; i++) { 446 if (!global.drv_priv[i]) 447 continue; 448 wpa_drivers[i]->global_deinit(global.drv_priv[i]); 449 } 450 os_free(global.drv_priv); 451 global.drv_priv = NULL; 452 453 #ifdef EAP_SERVER_TNC 454 tncs_global_deinit(); 455 #endif /* EAP_SERVER_TNC */ 456 457 random_deinit(); 458 459 eloop_destroy(); 460 461 #ifndef CONFIG_NATIVE_WINDOWS 462 closelog(); 463 #endif /* CONFIG_NATIVE_WINDOWS */ 464 465 eap_server_unregister_methods(); 466 467 os_daemonize_terminate(pid_file); 468 } 469 470 471 static int hostapd_global_run(struct hapd_interfaces *ifaces, int daemonize, 472 const char *pid_file) 473 { 474 #ifdef EAP_SERVER_TNC 475 int tnc = 0; 476 size_t i, k; 477 478 for (i = 0; !tnc && i < ifaces->count; i++) { 479 for (k = 0; k < ifaces->iface[i]->num_bss; k++) { 480 if (ifaces->iface[i]->bss[0]->conf->tnc) { 481 tnc++; 482 break; 483 } 484 } 485 } 486 487 if (tnc && tncs_global_init() < 0) { 488 wpa_printf(MSG_ERROR, "Failed to initialize TNCS"); 489 return -1; 490 } 491 #endif /* EAP_SERVER_TNC */ 492 493 if (daemonize && os_daemonize(pid_file)) { 494 perror("daemon"); 495 return -1; 496 } 497 498 eloop_run(); 499 500 return 0; 501 } 502 503 504 static void show_version(void) 505 { 506 fprintf(stderr, 507 "hostapd v" VERSION_STR "\n" 508 "User space daemon for IEEE 802.11 AP management,\n" 509 "IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n" 510 "Copyright (c) 2002-2012, Jouni Malinen <j (at) w1.fi> " 511 "and contributors\n"); 512 } 513 514 515 static void usage(void) 516 { 517 show_version(); 518 fprintf(stderr, 519 "\n" 520 "usage: hostapd [-hdBKtv] [-P <PID file>] [-e <entropy file>] " 521 "<configuration file(s)>\n" 522 "\n" 523 "options:\n" 524 " -h show this usage\n" 525 " -d show more debug messages (-dd for even more)\n" 526 " -B run daemon in the background\n" 527 " -e entropy file\n" 528 " -P PID file\n" 529 " -K include key data in debug messages\n" 530 #ifdef CONFIG_DEBUG_FILE 531 " -f log output to debug file instead of stdout\n" 532 #endif /* CONFIG_DEBUG_FILE */ 533 " -t include timestamps in some debug messages\n" 534 " -v show hostapd version\n"); 535 536 exit(1); 537 } 538 539 540 static const char * hostapd_msg_ifname_cb(void *ctx) 541 { 542 struct hostapd_data *hapd = ctx; 543 if (hapd && hapd->iconf && hapd->iconf->bss) 544 return hapd->iconf->bss->iface; 545 return NULL; 546 } 547 548 549 int main(int argc, char *argv[]) 550 { 551 struct hapd_interfaces interfaces; 552 int ret = 1; 553 size_t i; 554 int c, debug = 0, daemonize = 0; 555 char *pid_file = NULL; 556 const char *log_file = NULL; 557 const char *entropy_file = NULL; 558 559 if (os_program_init()) 560 return -1; 561 562 for (;;) { 563 c = getopt(argc, argv, "Bde:f:hKP:tv"); 564 if (c < 0) 565 break; 566 switch (c) { 567 case 'h': 568 usage(); 569 break; 570 case 'd': 571 debug++; 572 if (wpa_debug_level > 0) 573 wpa_debug_level--; 574 break; 575 case 'B': 576 daemonize++; 577 break; 578 case 'e': 579 entropy_file = optarg; 580 break; 581 case 'f': 582 log_file = optarg; 583 break; 584 case 'K': 585 wpa_debug_show_keys++; 586 break; 587 case 'P': 588 os_free(pid_file); 589 pid_file = os_rel2abs_path(optarg); 590 break; 591 case 't': 592 wpa_debug_timestamp++; 593 break; 594 case 'v': 595 show_version(); 596 exit(1); 597 break; 598 599 default: 600 usage(); 601 break; 602 } 603 } 604 605 if (optind == argc) 606 usage(); 607 608 wpa_msg_register_ifname_cb(hostapd_msg_ifname_cb); 609 610 if (log_file) 611 wpa_debug_open_file(log_file); 612 613 interfaces.count = argc - optind; 614 interfaces.iface = os_zalloc(interfaces.count * 615 sizeof(struct hostapd_iface *)); 616 if (interfaces.iface == NULL) { 617 wpa_printf(MSG_ERROR, "malloc failed"); 618 return -1; 619 } 620 621 if (hostapd_global_init(&interfaces, entropy_file)) 622 return -1; 623 624 /* Initialize interfaces */ 625 for (i = 0; i < interfaces.count; i++) { 626 interfaces.iface[i] = hostapd_interface_init(&interfaces, 627 argv[optind + i], 628 debug); 629 if (!interfaces.iface[i]) 630 goto out; 631 } 632 633 if (hostapd_global_run(&interfaces, daemonize, pid_file)) 634 goto out; 635 636 ret = 0; 637 638 out: 639 /* Deinitialize all interfaces */ 640 for (i = 0; i < interfaces.count; i++) 641 hostapd_interface_deinit_free(interfaces.iface[i]); 642 os_free(interfaces.iface); 643 644 hostapd_global_deinit(pid_file); 645 os_free(pid_file); 646 647 if (log_file) 648 wpa_debug_close_file(); 649 650 os_program_deinit(); 651 652 return ret; 653 } 654
