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 #include <grp.h> 13 #endif /* CONFIG_NATIVE_WINDOWS */ 14 15 #include "utils/common.h" 16 #include "utils/eloop.h" 17 #include "crypto/random.h" 18 #include "crypto/tls.h" 19 #include "common/version.h" 20 #include "drivers/driver.h" 21 #include "eap_server/eap.h" 22 #include "eap_server/tncs.h" 23 #include "ap/hostapd.h" 24 #include "ap/ap_config.h" 25 #include "ap/ap_drv_ops.h" 26 #include "config_file.h" 27 #include "eap_register.h" 28 #include "dump_state.h" 29 #include "ctrl_iface.h" 30 31 32 extern int wpa_debug_level; 33 extern int wpa_debug_show_keys; 34 extern int wpa_debug_timestamp; 35 36 extern struct wpa_driver_ops *wpa_drivers[]; 37 38 39 struct hapd_global { 40 void **drv_priv; 41 size_t drv_count; 42 }; 43 44 static struct hapd_global global; 45 46 47 #ifndef CONFIG_NO_HOSTAPD_LOGGER 48 static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module, 49 int level, const char *txt, size_t len) 50 { 51 struct hostapd_data *hapd = ctx; 52 char *format, *module_str; 53 int maxlen; 54 int conf_syslog_level, conf_stdout_level; 55 unsigned int conf_syslog, conf_stdout; 56 57 maxlen = len + 100; 58 format = os_malloc(maxlen); 59 if (!format) 60 return; 61 62 if (hapd && hapd->conf) { 63 conf_syslog_level = hapd->conf->logger_syslog_level; 64 conf_stdout_level = hapd->conf->logger_stdout_level; 65 conf_syslog = hapd->conf->logger_syslog; 66 conf_stdout = hapd->conf->logger_stdout; 67 } else { 68 conf_syslog_level = conf_stdout_level = 0; 69 conf_syslog = conf_stdout = (unsigned int) -1; 70 } 71 72 switch (module) { 73 case HOSTAPD_MODULE_IEEE80211: 74 module_str = "IEEE 802.11"; 75 break; 76 case HOSTAPD_MODULE_IEEE8021X: 77 module_str = "IEEE 802.1X"; 78 break; 79 case HOSTAPD_MODULE_RADIUS: 80 module_str = "RADIUS"; 81 break; 82 case HOSTAPD_MODULE_WPA: 83 module_str = "WPA"; 84 break; 85 case HOSTAPD_MODULE_DRIVER: 86 module_str = "DRIVER"; 87 break; 88 case HOSTAPD_MODULE_IAPP: 89 module_str = "IAPP"; 90 break; 91 case HOSTAPD_MODULE_MLME: 92 module_str = "MLME"; 93 break; 94 default: 95 module_str = NULL; 96 break; 97 } 98 99 if (hapd && hapd->conf && addr) 100 os_snprintf(format, maxlen, "%s: STA " MACSTR "%s%s: %s", 101 hapd->conf->iface, MAC2STR(addr), 102 module_str ? " " : "", module_str, txt); 103 else if (hapd && hapd->conf) 104 os_snprintf(format, maxlen, "%s:%s%s %s", 105 hapd->conf->iface, module_str ? " " : "", 106 module_str, txt); 107 else if (addr) 108 os_snprintf(format, maxlen, "STA " MACSTR "%s%s: %s", 109 MAC2STR(addr), module_str ? " " : "", 110 module_str, txt); 111 else 112 os_snprintf(format, maxlen, "%s%s%s", 113 module_str, module_str ? ": " : "", txt); 114 115 if ((conf_stdout & module) && level >= conf_stdout_level) { 116 wpa_debug_print_timestamp(); 117 printf("%s\n", format); 118 } 119 120 #ifndef CONFIG_NATIVE_WINDOWS 121 if ((conf_syslog & module) && level >= conf_syslog_level) { 122 int priority; 123 switch (level) { 124 case HOSTAPD_LEVEL_DEBUG_VERBOSE: 125 case HOSTAPD_LEVEL_DEBUG: 126 priority = LOG_DEBUG; 127 break; 128 case HOSTAPD_LEVEL_INFO: 129 priority = LOG_INFO; 130 break; 131 case HOSTAPD_LEVEL_NOTICE: 132 priority = LOG_NOTICE; 133 break; 134 case HOSTAPD_LEVEL_WARNING: 135 priority = LOG_WARNING; 136 break; 137 default: 138 priority = LOG_INFO; 139 break; 140 } 141 syslog(priority, "%s", format); 142 } 143 #endif /* CONFIG_NATIVE_WINDOWS */ 144 145 os_free(format); 146 } 147 #endif /* CONFIG_NO_HOSTAPD_LOGGER */ 148 149 150 /** 151 * hostapd_init - Allocate and initialize per-interface data 152 * @config_file: Path to the configuration file 153 * Returns: Pointer to the allocated interface data or %NULL on failure 154 * 155 * This function is used to allocate main data structures for per-interface 156 * data. The allocated data buffer will be freed by calling 157 * hostapd_cleanup_iface(). 158 */ 159 static struct hostapd_iface * hostapd_init(const char *config_file) 160 { 161 struct hostapd_iface *hapd_iface = NULL; 162 struct hostapd_config *conf = NULL; 163 struct hostapd_data *hapd; 164 size_t i; 165 166 hapd_iface = os_zalloc(sizeof(*hapd_iface)); 167 if (hapd_iface == NULL) 168 goto fail; 169 170 hapd_iface->config_fname = os_strdup(config_file); 171 if (hapd_iface->config_fname == NULL) 172 goto fail; 173 174 conf = hostapd_config_read(hapd_iface->config_fname); 175 if (conf == NULL) 176 goto fail; 177 hapd_iface->conf = conf; 178 179 hapd_iface->num_bss = conf->num_bss; 180 hapd_iface->bss = os_calloc(conf->num_bss, 181 sizeof(struct hostapd_data *)); 182 if (hapd_iface->bss == NULL) 183 goto fail; 184 185 for (i = 0; i < conf->num_bss; i++) { 186 hapd = hapd_iface->bss[i] = 187 hostapd_alloc_bss_data(hapd_iface, conf, 188 &conf->bss[i]); 189 if (hapd == NULL) 190 goto fail; 191 hapd->msg_ctx = hapd; 192 } 193 194 return hapd_iface; 195 196 fail: 197 if (conf) 198 hostapd_config_free(conf); 199 if (hapd_iface) { 200 os_free(hapd_iface->config_fname); 201 os_free(hapd_iface->bss); 202 os_free(hapd_iface); 203 } 204 return NULL; 205 } 206 207 208 static int hostapd_driver_init(struct hostapd_iface *iface) 209 { 210 struct wpa_init_params params; 211 size_t i; 212 struct hostapd_data *hapd = iface->bss[0]; 213 struct hostapd_bss_config *conf = hapd->conf; 214 u8 *b = conf->bssid; 215 struct wpa_driver_capa capa; 216 217 if (hapd->driver == NULL || hapd->driver->hapd_init == NULL) { 218 wpa_printf(MSG_ERROR, "No hostapd driver wrapper available"); 219 return -1; 220 } 221 222 /* Initialize the driver interface */ 223 if (!(b[0] | b[1] | b[2] | b[3] | b[4] | b[5])) 224 b = NULL; 225 226 os_memset(¶ms, 0, sizeof(params)); 227 for (i = 0; wpa_drivers[i]; i++) { 228 if (wpa_drivers[i] != hapd->driver) 229 continue; 230 231 if (global.drv_priv[i] == NULL && 232 wpa_drivers[i]->global_init) { 233 global.drv_priv[i] = wpa_drivers[i]->global_init(); 234 if (global.drv_priv[i] == NULL) { 235 wpa_printf(MSG_ERROR, "Failed to initialize " 236 "driver '%s'", 237 wpa_drivers[i]->name); 238 return -1; 239 } 240 } 241 242 params.global_priv = global.drv_priv[i]; 243 break; 244 } 245 params.bssid = b; 246 params.ifname = hapd->conf->iface; 247 params.ssid = hapd->conf->ssid.ssid; 248 params.ssid_len = hapd->conf->ssid.ssid_len; 249 params.test_socket = hapd->conf->test_socket; 250 params.use_pae_group_addr = hapd->conf->use_pae_group_addr; 251 252 params.num_bridge = hapd->iface->num_bss; 253 params.bridge = os_calloc(hapd->iface->num_bss, sizeof(char *)); 254 if (params.bridge == NULL) 255 return -1; 256 for (i = 0; i < hapd->iface->num_bss; i++) { 257 struct hostapd_data *bss = hapd->iface->bss[i]; 258 if (bss->conf->bridge[0]) 259 params.bridge[i] = bss->conf->bridge; 260 } 261 262 params.own_addr = hapd->own_addr; 263 264 hapd->drv_priv = hapd->driver->hapd_init(hapd, ¶ms); 265 os_free(params.bridge); 266 if (hapd->drv_priv == NULL) { 267 wpa_printf(MSG_ERROR, "%s driver initialization failed.", 268 hapd->driver->name); 269 hapd->driver = NULL; 270 return -1; 271 } 272 273 if (hapd->driver->get_capa && 274 hapd->driver->get_capa(hapd->drv_priv, &capa) == 0) { 275 iface->drv_flags = capa.flags; 276 iface->probe_resp_offloads = capa.probe_resp_offloads; 277 iface->extended_capa = capa.extended_capa; 278 iface->extended_capa_mask = capa.extended_capa_mask; 279 iface->extended_capa_len = capa.extended_capa_len; 280 } 281 282 return 0; 283 } 284 285 286 static struct hostapd_iface * 287 hostapd_interface_init(struct hapd_interfaces *interfaces, 288 const char *config_fname, int debug) 289 { 290 struct hostapd_iface *iface; 291 int k; 292 293 wpa_printf(MSG_ERROR, "Configuration file: %s", config_fname); 294 iface = hostapd_init(config_fname); 295 if (!iface) 296 return NULL; 297 iface->interfaces = interfaces; 298 299 for (k = 0; k < debug; k++) { 300 if (iface->bss[0]->conf->logger_stdout_level > 0) 301 iface->bss[0]->conf->logger_stdout_level--; 302 } 303 304 if (iface->conf->bss[0].iface[0] != 0 || 305 hostapd_drv_none(iface->bss[0])) { 306 if (hostapd_driver_init(iface) || 307 hostapd_setup_interface(iface)) { 308 hostapd_interface_deinit_free(iface); 309 return NULL; 310 } 311 } 312 313 return iface; 314 } 315 316 317 /** 318 * handle_term - SIGINT and SIGTERM handler to terminate hostapd process 319 */ 320 static void handle_term(int sig, void *signal_ctx) 321 { 322 wpa_printf(MSG_DEBUG, "Signal %d received - terminating", sig); 323 eloop_terminate(); 324 } 325 326 327 #ifndef CONFIG_NATIVE_WINDOWS 328 329 static int handle_reload_iface(struct hostapd_iface *iface, void *ctx) 330 { 331 if (hostapd_reload_config(iface) < 0) { 332 wpa_printf(MSG_WARNING, "Failed to read new configuration " 333 "file - continuing with old."); 334 } 335 return 0; 336 } 337 338 339 /** 340 * handle_reload - SIGHUP handler to reload configuration 341 */ 342 static void handle_reload(int sig, void *signal_ctx) 343 { 344 struct hapd_interfaces *interfaces = signal_ctx; 345 wpa_printf(MSG_DEBUG, "Signal %d received - reloading configuration", 346 sig); 347 hostapd_for_each_interface(interfaces, handle_reload_iface, NULL); 348 } 349 350 351 static void handle_dump_state(int sig, void *signal_ctx) 352 { 353 #ifdef HOSTAPD_DUMP_STATE 354 struct hapd_interfaces *interfaces = signal_ctx; 355 hostapd_for_each_interface(interfaces, handle_dump_state_iface, NULL); 356 #endif /* HOSTAPD_DUMP_STATE */ 357 } 358 #endif /* CONFIG_NATIVE_WINDOWS */ 359 360 361 static int hostapd_global_init(struct hapd_interfaces *interfaces, 362 const char *entropy_file) 363 { 364 int i; 365 366 os_memset(&global, 0, sizeof(global)); 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 random_init(entropy_file); 381 382 #ifndef CONFIG_NATIVE_WINDOWS 383 eloop_register_signal(SIGHUP, handle_reload, interfaces); 384 eloop_register_signal(SIGUSR1, handle_dump_state, interfaces); 385 #endif /* CONFIG_NATIVE_WINDOWS */ 386 eloop_register_signal_terminate(handle_term, interfaces); 387 388 #ifndef CONFIG_NATIVE_WINDOWS 389 openlog("hostapd", 0, LOG_DAEMON); 390 #endif /* CONFIG_NATIVE_WINDOWS */ 391 392 for (i = 0; wpa_drivers[i]; i++) 393 global.drv_count++; 394 if (global.drv_count == 0) { 395 wpa_printf(MSG_ERROR, "No drivers enabled"); 396 return -1; 397 } 398 global.drv_priv = os_calloc(global.drv_count, sizeof(void *)); 399 if (global.drv_priv == NULL) 400 return -1; 401 402 return 0; 403 } 404 405 406 static void hostapd_global_deinit(const char *pid_file) 407 { 408 int i; 409 410 for (i = 0; wpa_drivers[i] && global.drv_priv; i++) { 411 if (!global.drv_priv[i]) 412 continue; 413 wpa_drivers[i]->global_deinit(global.drv_priv[i]); 414 } 415 os_free(global.drv_priv); 416 global.drv_priv = NULL; 417 418 #ifdef EAP_SERVER_TNC 419 tncs_global_deinit(); 420 #endif /* EAP_SERVER_TNC */ 421 422 random_deinit(); 423 424 eloop_destroy(); 425 426 #ifndef CONFIG_NATIVE_WINDOWS 427 closelog(); 428 #endif /* CONFIG_NATIVE_WINDOWS */ 429 430 eap_server_unregister_methods(); 431 432 os_daemonize_terminate(pid_file); 433 } 434 435 436 static int hostapd_global_run(struct hapd_interfaces *ifaces, int daemonize, 437 const char *pid_file) 438 { 439 #ifdef EAP_SERVER_TNC 440 int tnc = 0; 441 size_t i, k; 442 443 for (i = 0; !tnc && i < ifaces->count; i++) { 444 for (k = 0; k < ifaces->iface[i]->num_bss; k++) { 445 if (ifaces->iface[i]->bss[0]->conf->tnc) { 446 tnc++; 447 break; 448 } 449 } 450 } 451 452 if (tnc && tncs_global_init() < 0) { 453 wpa_printf(MSG_ERROR, "Failed to initialize TNCS"); 454 return -1; 455 } 456 #endif /* EAP_SERVER_TNC */ 457 458 if (daemonize && os_daemonize(pid_file)) { 459 perror("daemon"); 460 return -1; 461 } 462 463 eloop_run(); 464 465 return 0; 466 } 467 468 469 static void show_version(void) 470 { 471 fprintf(stderr, 472 "hostapd v" VERSION_STR "\n" 473 "User space daemon for IEEE 802.11 AP management,\n" 474 "IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n" 475 "Copyright (c) 2002-2013, Jouni Malinen <j (at) w1.fi> " 476 "and contributors\n"); 477 } 478 479 480 static void usage(void) 481 { 482 show_version(); 483 fprintf(stderr, 484 "\n" 485 "usage: hostapd [-hdBKtv] [-P <PID file>] [-e <entropy file>] " 486 "\\\n" 487 " [-g <global ctrl_iface>] [-G <group>] \\\n" 488 " <configuration file(s)>\n" 489 "\n" 490 "options:\n" 491 " -h show this usage\n" 492 " -d show more debug messages (-dd for even more)\n" 493 " -B run daemon in the background\n" 494 " -e entropy file\n" 495 " -g global control interface path\n" 496 " -G group for control interfaces\n" 497 " -P PID file\n" 498 " -K include key data in debug messages\n" 499 #ifdef CONFIG_DEBUG_FILE 500 " -f log output to debug file instead of stdout\n" 501 #endif /* CONFIG_DEBUG_FILE */ 502 " -t include timestamps in some debug messages\n" 503 " -v show hostapd version\n"); 504 505 exit(1); 506 } 507 508 509 static const char * hostapd_msg_ifname_cb(void *ctx) 510 { 511 struct hostapd_data *hapd = ctx; 512 if (hapd && hapd->iconf && hapd->iconf->bss) 513 return hapd->iconf->bss->iface; 514 return NULL; 515 } 516 517 518 static int hostapd_get_global_ctrl_iface(struct hapd_interfaces *interfaces, 519 const char *path) 520 { 521 char *pos; 522 os_free(interfaces->global_iface_path); 523 interfaces->global_iface_path = os_strdup(path); 524 if (interfaces->global_iface_path == NULL) 525 return -1; 526 pos = os_strrchr(interfaces->global_iface_path, '/'); 527 if (pos == NULL) { 528 wpa_printf(MSG_ERROR, "No '/' in the global control interface " 529 "file"); 530 os_free(interfaces->global_iface_path); 531 interfaces->global_iface_path = NULL; 532 return -1; 533 } 534 535 *pos = '\0'; 536 interfaces->global_iface_name = pos + 1; 537 538 return 0; 539 } 540 541 542 static int hostapd_get_ctrl_iface_group(struct hapd_interfaces *interfaces, 543 const char *group) 544 { 545 #ifndef CONFIG_NATIVE_WINDOWS 546 struct group *grp; 547 grp = getgrnam(group); 548 if (grp == NULL) { 549 wpa_printf(MSG_ERROR, "Unknown group '%s'", group); 550 return -1; 551 } 552 interfaces->ctrl_iface_group = grp->gr_gid; 553 #endif /* CONFIG_NATIVE_WINDOWS */ 554 return 0; 555 } 556 557 558 int main(int argc, char *argv[]) 559 { 560 struct hapd_interfaces interfaces; 561 int ret = 1; 562 size_t i; 563 int c, debug = 0, daemonize = 0; 564 char *pid_file = NULL; 565 const char *log_file = NULL; 566 const char *entropy_file = NULL; 567 568 if (os_program_init()) 569 return -1; 570 571 os_memset(&interfaces, 0, sizeof(interfaces)); 572 interfaces.reload_config = hostapd_reload_config; 573 interfaces.config_read_cb = hostapd_config_read; 574 interfaces.for_each_interface = hostapd_for_each_interface; 575 interfaces.ctrl_iface_init = hostapd_ctrl_iface_init; 576 interfaces.ctrl_iface_deinit = hostapd_ctrl_iface_deinit; 577 interfaces.driver_init = hostapd_driver_init; 578 interfaces.global_iface_path = NULL; 579 interfaces.global_iface_name = NULL; 580 interfaces.global_ctrl_sock = -1; 581 582 for (;;) { 583 c = getopt(argc, argv, "Bde:f:hKP:tvg:G:"); 584 if (c < 0) 585 break; 586 switch (c) { 587 case 'h': 588 usage(); 589 break; 590 case 'd': 591 debug++; 592 if (wpa_debug_level > 0) 593 wpa_debug_level--; 594 break; 595 case 'B': 596 daemonize++; 597 break; 598 case 'e': 599 entropy_file = optarg; 600 break; 601 case 'f': 602 log_file = optarg; 603 break; 604 case 'K': 605 wpa_debug_show_keys++; 606 break; 607 case 'P': 608 os_free(pid_file); 609 pid_file = os_rel2abs_path(optarg); 610 break; 611 case 't': 612 wpa_debug_timestamp++; 613 break; 614 case 'v': 615 show_version(); 616 exit(1); 617 break; 618 case 'g': 619 if (hostapd_get_global_ctrl_iface(&interfaces, optarg)) 620 return -1; 621 break; 622 case 'G': 623 if (hostapd_get_ctrl_iface_group(&interfaces, optarg)) 624 return -1; 625 break; 626 default: 627 usage(); 628 break; 629 } 630 } 631 632 if (optind == argc && interfaces.global_iface_path == NULL) 633 usage(); 634 635 wpa_msg_register_ifname_cb(hostapd_msg_ifname_cb); 636 637 if (log_file) 638 wpa_debug_open_file(log_file); 639 640 interfaces.count = argc - optind; 641 if (interfaces.count) { 642 interfaces.iface = os_calloc(interfaces.count, 643 sizeof(struct hostapd_iface *)); 644 if (interfaces.iface == NULL) { 645 wpa_printf(MSG_ERROR, "malloc failed"); 646 return -1; 647 } 648 } 649 650 if (hostapd_global_init(&interfaces, entropy_file)) 651 return -1; 652 653 /* Initialize interfaces */ 654 for (i = 0; i < interfaces.count; i++) { 655 interfaces.iface[i] = hostapd_interface_init(&interfaces, 656 argv[optind + i], 657 debug); 658 if (!interfaces.iface[i]) 659 goto out; 660 } 661 662 hostapd_global_ctrl_iface_init(&interfaces); 663 664 if (hostapd_global_run(&interfaces, daemonize, pid_file)) 665 goto out; 666 667 ret = 0; 668 669 out: 670 hostapd_global_ctrl_iface_deinit(&interfaces); 671 /* Deinitialize all interfaces */ 672 for (i = 0; i < interfaces.count; i++) 673 hostapd_interface_deinit_free(interfaces.iface[i]); 674 os_free(interfaces.iface); 675 676 hostapd_global_deinit(pid_file); 677 os_free(pid_file); 678 679 if (log_file) 680 wpa_debug_close_file(); 681 682 os_program_deinit(); 683 684 return ret; 685 } 686
