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 wpa_printf(MSG_ERROR, "Failed to set up interface with %s", 198 config_file); 199 if (conf) 200 hostapd_config_free(conf); 201 if (hapd_iface) { 202 os_free(hapd_iface->config_fname); 203 os_free(hapd_iface->bss); 204 os_free(hapd_iface); 205 } 206 return NULL; 207 } 208 209 210 static int hostapd_driver_init(struct hostapd_iface *iface) 211 { 212 struct wpa_init_params params; 213 size_t i; 214 struct hostapd_data *hapd = iface->bss[0]; 215 struct hostapd_bss_config *conf = hapd->conf; 216 u8 *b = conf->bssid; 217 struct wpa_driver_capa capa; 218 219 if (hapd->driver == NULL || hapd->driver->hapd_init == NULL) { 220 wpa_printf(MSG_ERROR, "No hostapd driver wrapper available"); 221 return -1; 222 } 223 224 /* Initialize the driver interface */ 225 if (!(b[0] | b[1] | b[2] | b[3] | b[4] | b[5])) 226 b = NULL; 227 228 os_memset(¶ms, 0, sizeof(params)); 229 for (i = 0; wpa_drivers[i]; i++) { 230 if (wpa_drivers[i] != hapd->driver) 231 continue; 232 233 if (global.drv_priv[i] == NULL && 234 wpa_drivers[i]->global_init) { 235 global.drv_priv[i] = wpa_drivers[i]->global_init(); 236 if (global.drv_priv[i] == NULL) { 237 wpa_printf(MSG_ERROR, "Failed to initialize " 238 "driver '%s'", 239 wpa_drivers[i]->name); 240 return -1; 241 } 242 } 243 244 params.global_priv = global.drv_priv[i]; 245 break; 246 } 247 params.bssid = b; 248 params.ifname = hapd->conf->iface; 249 params.ssid = 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_calloc(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 if (hapd->driver->get_capa && 276 hapd->driver->get_capa(hapd->drv_priv, &capa) == 0) { 277 iface->drv_flags = capa.flags; 278 iface->probe_resp_offloads = capa.probe_resp_offloads; 279 iface->extended_capa = capa.extended_capa; 280 iface->extended_capa_mask = capa.extended_capa_mask; 281 iface->extended_capa_len = capa.extended_capa_len; 282 iface->drv_max_acl_mac_addrs = capa.max_acl_mac_addrs; 283 } 284 285 return 0; 286 } 287 288 289 static struct hostapd_iface * 290 hostapd_interface_init(struct hapd_interfaces *interfaces, 291 const char *config_fname, int debug) 292 { 293 struct hostapd_iface *iface; 294 int k; 295 296 wpa_printf(MSG_ERROR, "Configuration file: %s", config_fname); 297 iface = hostapd_init(config_fname); 298 if (!iface) 299 return NULL; 300 iface->interfaces = interfaces; 301 302 for (k = 0; k < debug; k++) { 303 if (iface->bss[0]->conf->logger_stdout_level > 0) 304 iface->bss[0]->conf->logger_stdout_level--; 305 } 306 307 if (iface->conf->bss[0].iface[0] == '\0' && 308 !hostapd_drv_none(iface->bss[0])) { 309 wpa_printf(MSG_ERROR, "Interface name not specified in %s", 310 config_fname); 311 hostapd_interface_deinit_free(iface); 312 return NULL; 313 } 314 315 if (hostapd_driver_init(iface) || 316 hostapd_setup_interface(iface)) { 317 hostapd_interface_deinit_free(iface); 318 return NULL; 319 } 320 321 return iface; 322 } 323 324 325 /** 326 * handle_term - SIGINT and SIGTERM handler to terminate hostapd process 327 */ 328 static void handle_term(int sig, void *signal_ctx) 329 { 330 wpa_printf(MSG_DEBUG, "Signal %d received - terminating", sig); 331 eloop_terminate(); 332 } 333 334 335 #ifndef CONFIG_NATIVE_WINDOWS 336 337 static int handle_reload_iface(struct hostapd_iface *iface, void *ctx) 338 { 339 if (hostapd_reload_config(iface) < 0) { 340 wpa_printf(MSG_WARNING, "Failed to read new configuration " 341 "file - continuing with old."); 342 } 343 return 0; 344 } 345 346 347 /** 348 * handle_reload - SIGHUP handler to reload configuration 349 */ 350 static void handle_reload(int sig, void *signal_ctx) 351 { 352 struct hapd_interfaces *interfaces = signal_ctx; 353 wpa_printf(MSG_DEBUG, "Signal %d received - reloading configuration", 354 sig); 355 hostapd_for_each_interface(interfaces, handle_reload_iface, NULL); 356 } 357 358 359 static void handle_dump_state(int sig, void *signal_ctx) 360 { 361 #ifdef HOSTAPD_DUMP_STATE 362 struct hapd_interfaces *interfaces = signal_ctx; 363 hostapd_for_each_interface(interfaces, handle_dump_state_iface, NULL); 364 #endif /* HOSTAPD_DUMP_STATE */ 365 } 366 #endif /* CONFIG_NATIVE_WINDOWS */ 367 368 369 static int hostapd_global_init(struct hapd_interfaces *interfaces, 370 const char *entropy_file) 371 { 372 int i; 373 374 os_memset(&global, 0, sizeof(global)); 375 376 hostapd_logger_register_cb(hostapd_logger_cb); 377 378 if (eap_server_register_methods()) { 379 wpa_printf(MSG_ERROR, "Failed to register EAP methods"); 380 return -1; 381 } 382 383 if (eloop_init()) { 384 wpa_printf(MSG_ERROR, "Failed to initialize event loop"); 385 return -1; 386 } 387 388 random_init(entropy_file); 389 390 #ifndef CONFIG_NATIVE_WINDOWS 391 eloop_register_signal(SIGHUP, handle_reload, interfaces); 392 eloop_register_signal(SIGUSR1, handle_dump_state, interfaces); 393 #endif /* CONFIG_NATIVE_WINDOWS */ 394 eloop_register_signal_terminate(handle_term, interfaces); 395 396 #ifndef CONFIG_NATIVE_WINDOWS 397 openlog("hostapd", 0, LOG_DAEMON); 398 #endif /* CONFIG_NATIVE_WINDOWS */ 399 400 for (i = 0; wpa_drivers[i]; i++) 401 global.drv_count++; 402 if (global.drv_count == 0) { 403 wpa_printf(MSG_ERROR, "No drivers enabled"); 404 return -1; 405 } 406 global.drv_priv = os_calloc(global.drv_count, sizeof(void *)); 407 if (global.drv_priv == NULL) 408 return -1; 409 410 return 0; 411 } 412 413 414 static void hostapd_global_deinit(const char *pid_file) 415 { 416 int i; 417 418 for (i = 0; wpa_drivers[i] && global.drv_priv; i++) { 419 if (!global.drv_priv[i]) 420 continue; 421 wpa_drivers[i]->global_deinit(global.drv_priv[i]); 422 } 423 os_free(global.drv_priv); 424 global.drv_priv = NULL; 425 426 #ifdef EAP_SERVER_TNC 427 tncs_global_deinit(); 428 #endif /* EAP_SERVER_TNC */ 429 430 random_deinit(); 431 432 eloop_destroy(); 433 434 #ifndef CONFIG_NATIVE_WINDOWS 435 closelog(); 436 #endif /* CONFIG_NATIVE_WINDOWS */ 437 438 eap_server_unregister_methods(); 439 440 os_daemonize_terminate(pid_file); 441 } 442 443 444 static int hostapd_global_run(struct hapd_interfaces *ifaces, int daemonize, 445 const char *pid_file) 446 { 447 #ifdef EAP_SERVER_TNC 448 int tnc = 0; 449 size_t i, k; 450 451 for (i = 0; !tnc && i < ifaces->count; i++) { 452 for (k = 0; k < ifaces->iface[i]->num_bss; k++) { 453 if (ifaces->iface[i]->bss[0]->conf->tnc) { 454 tnc++; 455 break; 456 } 457 } 458 } 459 460 if (tnc && tncs_global_init() < 0) { 461 wpa_printf(MSG_ERROR, "Failed to initialize TNCS"); 462 return -1; 463 } 464 #endif /* EAP_SERVER_TNC */ 465 466 if (daemonize && os_daemonize(pid_file)) { 467 perror("daemon"); 468 return -1; 469 } 470 471 eloop_run(); 472 473 return 0; 474 } 475 476 477 static void show_version(void) 478 { 479 fprintf(stderr, 480 "hostapd v" VERSION_STR "\n" 481 "User space daemon for IEEE 802.11 AP management,\n" 482 "IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n" 483 "Copyright (c) 2002-2013, Jouni Malinen <j (at) w1.fi> " 484 "and contributors\n"); 485 } 486 487 488 static void usage(void) 489 { 490 show_version(); 491 fprintf(stderr, 492 "\n" 493 "usage: hostapd [-hdBKtv] [-P <PID file>] [-e <entropy file>] " 494 "\\\n" 495 " [-g <global ctrl_iface>] [-G <group>] \\\n" 496 " <configuration file(s)>\n" 497 "\n" 498 "options:\n" 499 " -h show this usage\n" 500 " -d show more debug messages (-dd for even more)\n" 501 " -B run daemon in the background\n" 502 " -e entropy file\n" 503 " -g global control interface path\n" 504 " -G group for control interfaces\n" 505 " -P PID file\n" 506 " -K include key data in debug messages\n" 507 #ifdef CONFIG_DEBUG_FILE 508 " -f log output to debug file instead of stdout\n" 509 #endif /* CONFIG_DEBUG_FILE */ 510 " -t include timestamps in some debug messages\n" 511 " -v show hostapd version\n"); 512 513 exit(1); 514 } 515 516 517 static const char * hostapd_msg_ifname_cb(void *ctx) 518 { 519 struct hostapd_data *hapd = ctx; 520 if (hapd && hapd->iconf && hapd->iconf->bss) 521 return hapd->iconf->bss->iface; 522 return NULL; 523 } 524 525 526 static int hostapd_get_global_ctrl_iface(struct hapd_interfaces *interfaces, 527 const char *path) 528 { 529 char *pos; 530 os_free(interfaces->global_iface_path); 531 interfaces->global_iface_path = os_strdup(path); 532 if (interfaces->global_iface_path == NULL) 533 return -1; 534 pos = os_strrchr(interfaces->global_iface_path, '/'); 535 if (pos == NULL) { 536 wpa_printf(MSG_ERROR, "No '/' in the global control interface " 537 "file"); 538 os_free(interfaces->global_iface_path); 539 interfaces->global_iface_path = NULL; 540 return -1; 541 } 542 543 *pos = '\0'; 544 interfaces->global_iface_name = pos + 1; 545 546 return 0; 547 } 548 549 550 static int hostapd_get_ctrl_iface_group(struct hapd_interfaces *interfaces, 551 const char *group) 552 { 553 #ifndef CONFIG_NATIVE_WINDOWS 554 struct group *grp; 555 grp = getgrnam(group); 556 if (grp == NULL) { 557 wpa_printf(MSG_ERROR, "Unknown group '%s'", group); 558 return -1; 559 } 560 interfaces->ctrl_iface_group = grp->gr_gid; 561 #endif /* CONFIG_NATIVE_WINDOWS */ 562 return 0; 563 } 564 565 566 int main(int argc, char *argv[]) 567 { 568 struct hapd_interfaces interfaces; 569 int ret = 1; 570 size_t i; 571 int c, debug = 0, daemonize = 0; 572 char *pid_file = NULL; 573 const char *log_file = NULL; 574 const char *entropy_file = NULL; 575 576 if (os_program_init()) 577 return -1; 578 579 os_memset(&interfaces, 0, sizeof(interfaces)); 580 interfaces.reload_config = hostapd_reload_config; 581 interfaces.config_read_cb = hostapd_config_read; 582 interfaces.for_each_interface = hostapd_for_each_interface; 583 interfaces.ctrl_iface_init = hostapd_ctrl_iface_init; 584 interfaces.ctrl_iface_deinit = hostapd_ctrl_iface_deinit; 585 interfaces.driver_init = hostapd_driver_init; 586 interfaces.global_iface_path = NULL; 587 interfaces.global_iface_name = NULL; 588 interfaces.global_ctrl_sock = -1; 589 590 for (;;) { 591 c = getopt(argc, argv, "Bde:f:hKP:tvg:G:"); 592 if (c < 0) 593 break; 594 switch (c) { 595 case 'h': 596 usage(); 597 break; 598 case 'd': 599 debug++; 600 if (wpa_debug_level > 0) 601 wpa_debug_level--; 602 break; 603 case 'B': 604 daemonize++; 605 break; 606 case 'e': 607 entropy_file = optarg; 608 break; 609 case 'f': 610 log_file = optarg; 611 break; 612 case 'K': 613 wpa_debug_show_keys++; 614 break; 615 case 'P': 616 os_free(pid_file); 617 pid_file = os_rel2abs_path(optarg); 618 break; 619 case 't': 620 wpa_debug_timestamp++; 621 break; 622 case 'v': 623 show_version(); 624 exit(1); 625 break; 626 case 'g': 627 if (hostapd_get_global_ctrl_iface(&interfaces, optarg)) 628 return -1; 629 break; 630 case 'G': 631 if (hostapd_get_ctrl_iface_group(&interfaces, optarg)) 632 return -1; 633 break; 634 default: 635 usage(); 636 break; 637 } 638 } 639 640 if (optind == argc && interfaces.global_iface_path == NULL) 641 usage(); 642 643 wpa_msg_register_ifname_cb(hostapd_msg_ifname_cb); 644 645 if (log_file) 646 wpa_debug_open_file(log_file); 647 648 interfaces.count = argc - optind; 649 if (interfaces.count) { 650 interfaces.iface = os_calloc(interfaces.count, 651 sizeof(struct hostapd_iface *)); 652 if (interfaces.iface == NULL) { 653 wpa_printf(MSG_ERROR, "malloc failed"); 654 return -1; 655 } 656 } 657 658 if (hostapd_global_init(&interfaces, entropy_file)) { 659 wpa_printf(MSG_ERROR, "Failed to initilize global context"); 660 return -1; 661 } 662 663 /* Initialize interfaces */ 664 for (i = 0; i < interfaces.count; i++) { 665 interfaces.iface[i] = hostapd_interface_init(&interfaces, 666 argv[optind + i], 667 debug); 668 if (!interfaces.iface[i]) { 669 wpa_printf(MSG_ERROR, "Failed to initialize interface"); 670 goto out; 671 } 672 } 673 674 hostapd_global_ctrl_iface_init(&interfaces); 675 676 if (hostapd_global_run(&interfaces, daemonize, pid_file)) { 677 wpa_printf(MSG_ERROR, "Failed to start eloop"); 678 goto out; 679 } 680 681 ret = 0; 682 683 out: 684 hostapd_global_ctrl_iface_deinit(&interfaces); 685 /* Deinitialize all interfaces */ 686 for (i = 0; i < interfaces.count; i++) 687 hostapd_interface_deinit_free(interfaces.iface[i]); 688 os_free(interfaces.iface); 689 690 hostapd_global_deinit(pid_file); 691 os_free(pid_file); 692 693 if (log_file) 694 wpa_debug_close_file(); 695 696 os_program_deinit(); 697 698 return ret; 699 } 700
