hostapd/main.c

   1 /*
   2  * hostapd / main()
   3  * Copyright (c) 2002-2016, Jouni Malinen <j@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 "utils/uuid.h"
  18 #include "crypto/random.h"
  19 #include "crypto/tls.h"
  20 #include "common/version.h"
  21 #include "drivers/driver.h"
  22 #include "eap_server/eap.h"
  23 #include "eap_server/tncs.h"
  24 #include "ap/hostapd.h"
  25 #include "ap/ap_config.h"
  26 #include "ap/ap_drv_ops.h"
  27 #include "fst/fst.h"
  28 #include "config_file.h"
  29 #include "eap_register.h"
  30 #include "ctrl_iface.h"
  31
  32
  33 struct hapd_global {
  34         void **drv_priv;
  35         size_t drv_count;
  36 };
  37
  38 static struct hapd_global global;
  39
  40
  41 #ifndef CONFIG_NO_HOSTAPD_LOGGER
  42 static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
  43                               int level, const char *txt, size_t len)
  44 {
  45         struct hostapd_data *hapd = ctx;
  46         char *format, *module_str;
  47         int maxlen;
  48         int conf_syslog_level, conf_stdout_level;
  49         unsigned int conf_syslog, conf_stdout;
  50
  51         maxlen = len + 100;
  52         format = os_malloc(maxlen);
  53         if (!format)
  54                 return;
  55
  56         if (hapd && hapd->conf) {
  57                 conf_syslog_level = hapd->conf->logger_syslog_level;
  58                 conf_stdout_level = hapd->conf->logger_stdout_level;
  59                 conf_syslog = hapd->conf->logger_syslog;
  60                 conf_stdout = hapd->conf->logger_stdout;
  61         } else {
  62                 conf_syslog_level = conf_stdout_level = 0;
  63                 conf_syslog = conf_stdout = (unsigned int) -1;
  64         }
  65
  66         switch (module) {
  67         case HOSTAPD_MODULE_IEEE80211:
  68                 module_str = "IEEE 802.11";
  69                 break;
  70         case HOSTAPD_MODULE_IEEE8021X:
  71                 module_str = "IEEE 802.1X";
  72                 break;
  73         case HOSTAPD_MODULE_RADIUS:
  74                 module_str = "RADIUS";
  75                 break;
  76         case HOSTAPD_MODULE_WPA:
  77                 module_str = "WPA";
  78                 break;
  79         case HOSTAPD_MODULE_DRIVER:
  80                 module_str = "DRIVER";
  81                 break;
  82         case HOSTAPD_MODULE_IAPP:
  83                 module_str = "IAPP";
  84                 break;
  85         case HOSTAPD_MODULE_MLME:
  86                 module_str = "MLME";
  87                 break;
  88         default:
  89                 module_str = NULL;
  90                 break;
  91         }
  92
  93         if (hapd && hapd->conf && addr)
  94                 os_snprintf(format, maxlen, "%s: STA " MACSTR "%s%s: %s",
  95                             hapd->conf->iface, MAC2STR(addr),
  96                             module_str ? " " : "", module_str ? module_str : "",
  97                             txt);
  98         else if (hapd && hapd->conf)
  99                 os_snprintf(format, maxlen, "%s:%s%s %s",
 100                             hapd->conf->iface, module_str ? " " : "",
 101                             module_str ? module_str : "", txt);
 102         else if (addr)
 103                 os_snprintf(format, maxlen, "STA " MACSTR "%s%s: %s",
 104                             MAC2STR(addr), module_str ? " " : "",
 105                             module_str ? module_str : "", txt);
 106         else
 107                 os_snprintf(format, maxlen, "%s%s%s",
 108                             module_str ? module_str : "",
 109                             module_str ? ": " : "", txt);
 110
 111         if ((conf_stdout & module) && level >= conf_stdout_level) {
 112                 wpa_debug_print_timestamp();
 113                 wpa_printf(MSG_INFO, "%s", format);
 114         }
 115
 116 #ifndef CONFIG_NATIVE_WINDOWS
 117         if ((conf_syslog & module) && level >= conf_syslog_level) {
 118                 int priority;
 119                 switch (level) {
 120                 case HOSTAPD_LEVEL_DEBUG_VERBOSE:
 121                 case HOSTAPD_LEVEL_DEBUG:
 122                         priority = LOG_DEBUG;
 123                         break;
 124                 case HOSTAPD_LEVEL_INFO:
 125                         priority = LOG_INFO;
 126                         break;
 127                 case HOSTAPD_LEVEL_NOTICE:
 128                         priority = LOG_NOTICE;
 129                         break;
 130                 case HOSTAPD_LEVEL_WARNING:
 131                         priority = LOG_WARNING;
 132                         break;
 133                 default:
 134                         priority = LOG_INFO;
 135                         break;
 136                 }
 137                 syslog(priority, "%s", format);
 138         }
 139 #endif /* CONFIG_NATIVE_WINDOWS */
 140
 141         os_free(format);
 142 }
 143 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
 144
 145
 146 /**
 147  * hostapd_driver_init - Preparate driver interface
 148  */
 149 static int hostapd_driver_init(struct hostapd_iface *iface)
 150 {
 151         struct wpa_init_params params;
 152         size_t i;
 153         struct hostapd_data *hapd = iface->bss[0];
 154         struct hostapd_bss_config *conf = hapd->conf;
 155         u8 *b = conf->bssid;
 156         struct wpa_driver_capa capa;
 157
 158         if (hapd->driver == NULL || hapd->driver->hapd_init == NULL) {
 159                 wpa_printf(MSG_ERROR, "No hostapd driver wrapper available");
 160                 return -1;
 161         }
 162
 163         /* Initialize the driver interface */
 164         if (!(b[0] | b[1] | b[2] | b[3] | b[4] | b[5]))
 165                 b = NULL;
 166
 167         os_memset(&params, 0, sizeof(params));
 168         for (i = 0; wpa_drivers[i]; i++) {
 169                 if (wpa_drivers[i] != hapd->driver)
 170                         continue;
 171
 172                 if (global.drv_priv[i] == NULL &&
 173                     wpa_drivers[i]->global_init) {
 174                         global.drv_priv[i] = wpa_drivers[i]->global_init();
 175                         if (global.drv_priv[i] == NULL) {
 176                                 wpa_printf(MSG_ERROR, "Failed to initialize "
 177                                            "driver '%s'",
 178                                            wpa_drivers[i]->name);
 179                                 return -1;
 180                         }
 181                 }
 182
 183                 params.global_priv = global.drv_priv[i];
 184                 break;
 185         }
 186         params.bssid = b;
 187         params.ifname = hapd->conf->iface;
 188         params.driver_params = hapd->iconf->driver_params;
 189         params.use_pae_group_addr = hapd->conf->use_pae_group_addr;
 190
 191         params.num_bridge = hapd->iface->num_bss;
 192         params.bridge = os_calloc(hapd->iface->num_bss, sizeof(char *));
 193         if (params.bridge == NULL)
 194                 return -1;
 195         for (i = 0; i < hapd->iface->num_bss; i++) {
 196                 struct hostapd_data *bss = hapd->iface->bss[i];
 197                 if (bss->conf->bridge[0])
 198                         params.bridge[i] = bss->conf->bridge;
 199         }
 200
 201         params.own_addr = hapd->own_addr;
 202
 203         hapd->drv_priv = hapd->driver->hapd_init(hapd, &params);
 204         os_free(params.bridge);
 205         if (hapd->drv_priv == NULL) {
 206                 wpa_printf(MSG_ERROR, "%s driver initialization failed.",
 207                            hapd->driver->name);
 208                 hapd->driver = NULL;
 209                 return -1;
 210         }
 211
 212         if (hapd->driver->get_capa &&
 213             hapd->driver->get_capa(hapd->drv_priv, &capa) == 0) {
 214                 struct wowlan_triggers *triggs;
 215
 216                 iface->drv_flags = capa.flags;
 217                 iface->smps_modes = capa.smps_modes;
 218                 iface->probe_resp_offloads = capa.probe_resp_offloads;
 219                 iface->extended_capa = capa.extended_capa;
 220                 iface->extended_capa_mask = capa.extended_capa_mask;
 221                 iface->extended_capa_len = capa.extended_capa_len;
 222                 iface->drv_max_acl_mac_addrs = capa.max_acl_mac_addrs;
 223
 224                 triggs = wpa_get_wowlan_triggers(conf->wowlan_triggers, &capa);
 225                 if (triggs && hapd->driver->set_wowlan) {
 226                         if (hapd->driver->set_wowlan(hapd->drv_priv, triggs))
 227                                 wpa_printf(MSG_ERROR, "set_wowlan failed");
 228                 }
 229                 os_free(triggs);
 230         }
 231
 232         return 0;
 233 }
 234
 235
 236 /**
 237  * hostapd_interface_init - Read configuration file and init BSS data
 238  *
 239  * This function is used to parse configuration file for a full interface (one
 240  * or more BSSes sharing the same radio) and allocate memory for the BSS
 241  * interfaces. No actiual driver operations are started.
 242  */
 243 static struct hostapd_iface *
 244 hostapd_interface_init(struct hapd_interfaces *interfaces,
 245                        const char *config_fname, int debug)
 246 {
 247         struct hostapd_iface *iface;
 248         int k;
 249
 250         wpa_printf(MSG_ERROR, "Configuration file: %s", config_fname);
 251         iface = hostapd_init(interfaces, config_fname);
 252         if (!iface)
 253                 return NULL;
 254         iface->interfaces = interfaces;
 255
 256         for (k = 0; k < debug; k++) {
 257                 if (iface->bss[0]->conf->logger_stdout_level > 0)
 258                         iface->bss[0]->conf->logger_stdout_level--;
 259         }
 260
 261         if (iface->conf->bss[0]->iface[0] == '\0' &&
 262             !hostapd_drv_none(iface->bss[0])) {
 263                 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
 264                            config_fname);
 265                 hostapd_interface_deinit_free(iface);
 266                 return NULL;
 267         }
 268
 269         return iface;
 270 }
 271
 272
 273 /**
 274  * handle_term - SIGINT and SIGTERM handler to terminate hostapd process
 275  */
 276 static void handle_term(int sig, void *signal_ctx)
 277 {
 278         wpa_printf(MSG_DEBUG, "Signal %d received - terminating", sig);
 279         eloop_terminate();
 280 }
 281
 282
 283 #ifndef CONFIG_NATIVE_WINDOWS
 284
 285 static int handle_reload_iface(struct hostapd_iface *iface, void *ctx)
 286 {
 287         if (hostapd_reload_config(iface) < 0) {
 288                 wpa_printf(MSG_WARNING, "Failed to read new configuration "
 289                            "file - continuing with old.");
 290         }
 291         return 0;
 292 }
 293
 294
 295 /**
 296  * handle_reload - SIGHUP handler to reload configuration
 297  */
 298 static void handle_reload(int sig, void *signal_ctx)
 299 {
 300         struct hapd_interfaces *interfaces = signal_ctx;
 301         wpa_printf(MSG_DEBUG, "Signal %d received - reloading configuration",
 302                    sig);
 303         hostapd_for_each_interface(interfaces, handle_reload_iface, NULL);
 304 }
 305
 306
 307 static void handle_dump_state(int sig, void *signal_ctx)
 308 {
 309         /* Not used anymore - ignore signal */
 310 }
 311 #endif /* CONFIG_NATIVE_WINDOWS */
 312
 313
 314 static int hostapd_global_init(struct hapd_interfaces *interfaces,
 315                                const char *entropy_file)
 316 {
 317         int i;
 318
 319         os_memset(&global, 0, sizeof(global));
 320
 321         hostapd_logger_register_cb(hostapd_logger_cb);
 322
 323         if (eap_server_register_methods()) {
 324                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
 325                 return -1;
 326         }
 327
 328         if (eloop_init()) {
 329                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
 330                 return -1;
 331         }
 332
 333         random_init(entropy_file);
 334
 335 #ifndef CONFIG_NATIVE_WINDOWS
 336         eloop_register_signal(SIGHUP, handle_reload, interfaces);
 337         eloop_register_signal(SIGUSR1, handle_dump_state, interfaces);
 338 #endif /* CONFIG_NATIVE_WINDOWS */
 339         eloop_register_signal_terminate(handle_term, interfaces);
 340
 341 #ifndef CONFIG_NATIVE_WINDOWS
 342         openlog("hostapd", 0, LOG_DAEMON);
 343 #endif /* CONFIG_NATIVE_WINDOWS */
 344
 345         for (i = 0; wpa_drivers[i]; i++)
 346                 global.drv_count++;
 347         if (global.drv_count == 0) {
 348                 wpa_printf(MSG_ERROR, "No drivers enabled");
 349                 return -1;
 350         }
 351         global.drv_priv = os_calloc(global.drv_count, sizeof(void *));
 352         if (global.drv_priv == NULL)
 353                 return -1;
 354
 355         return 0;
 356 }
 357
 358
 359 static void hostapd_global_deinit(const char *pid_file)
 360 {
 361         int i;
 362
 363         for (i = 0; wpa_drivers[i] && global.drv_priv; i++) {
 364                 if (!global.drv_priv[i])
 365                         continue;
 366                 wpa_drivers[i]->global_deinit(global.drv_priv[i]);
 367         }
 368         os_free(global.drv_priv);
 369         global.drv_priv = NULL;
 370
 371 #ifdef EAP_SERVER_TNC
 372         tncs_global_deinit();
 373 #endif /* EAP_SERVER_TNC */
 374
 375         random_deinit();
 376
 377         eloop_destroy();
 378
 379 #ifndef CONFIG_NATIVE_WINDOWS
 380         closelog();
 381 #endif /* CONFIG_NATIVE_WINDOWS */
 382
 383         eap_server_unregister_methods();
 384
 385         os_daemonize_terminate(pid_file);
 386 }
 387
 388
 389 static int hostapd_global_run(struct hapd_interfaces *ifaces, int daemonize,
 390                               const char *pid_file)
 391 {
 392 #ifdef EAP_SERVER_TNC
 393         int tnc = 0;
 394         size_t i, k;
 395
 396         for (i = 0; !tnc && i < ifaces->count; i++) {
 397                 for (k = 0; k < ifaces->iface[i]->num_bss; k++) {
 398                         if (ifaces->iface[i]->bss[0]->conf->tnc) {
 399                                 tnc++;
 400                                 break;
 401                         }
 402                 }
 403         }
 404
 405         if (tnc && tncs_global_init() < 0) {
 406                 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
 407                 return -1;
 408         }
 409 #endif /* EAP_SERVER_TNC */
 410
 411         if (daemonize && os_daemonize(pid_file)) {
 412                 wpa_printf(MSG_ERROR, "daemon: %s", strerror(errno));
 413                 return -1;
 414         }
 415
 416         eloop_run();
 417
 418         return 0;
 419 }
 420
 421
 422 static void show_version(void)
 423 {
 424         fprintf(stderr,
 425                 "hostapd v" VERSION_STR "\n"
 426                 "User space daemon for IEEE 802.11 AP management,\n"
 427                 "IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n"
 428                 "Copyright (c) 2002-2016, Jouni Malinen <j@w1.fi> "
 429                 "and contributors\n");
 430 }
 431
 432
 433 static void usage(void)
 434 {
 435         show_version();
 436         fprintf(stderr,
 437                 "\n"
 438                 "usage: hostapd [-hdBKtv] [-P <PID file>] [-e <entropy file>] "
 439                 "\\\n"
 440                 "         [-g <global ctrl_iface>] [-G <group>] \\\n"
 441                 "         <configuration file(s)>\n"
 442                 "\n"
 443                 "options:\n"
 444                 "   -h   show this usage\n"
 445                 "   -d   show more debug messages (-dd for even more)\n"
 446                 "   -B   run daemon in the background\n"
 447                 "   -e   entropy file\n"
 448                 "   -g   global control interface path\n"
 449                 "   -G   group for control interfaces\n"
 450                 "   -P   PID file\n"
 451                 "   -K   include key data in debug messages\n"
 452 #ifdef CONFIG_DEBUG_FILE
 453                 "   -f   log output to debug file instead of stdout\n"
 454 #endif /* CONFIG_DEBUG_FILE */
 455 #ifdef CONFIG_DEBUG_LINUX_TRACING
 456                 "   -T = record to Linux tracing in addition to logging\n"
 457                 "        (records all messages regardless of debug verbosity)\n"
 458 #endif /* CONFIG_DEBUG_LINUX_TRACING */
 459                 "   -S   start all the interfaces synchronously\n"
 460                 "   -t   include timestamps in some debug messages\n"
 461                 "   -v   show hostapd version\n");
 462
 463         exit(1);
 464 }
 465
 466
 467 static const char * hostapd_msg_ifname_cb(void *ctx)
 468 {
 469         struct hostapd_data *hapd = ctx;
 470         if (hapd && hapd->iconf && hapd->iconf->bss &&
 471             hapd->iconf->num_bss > 0 && hapd->iconf->bss[0])
 472                 return hapd->iconf->bss[0]->iface;
 473         return NULL;
 474 }
 475
 476
 477 static int hostapd_get_global_ctrl_iface(struct hapd_interfaces *interfaces,
 478                                          const char *path)
 479 {
 480         char *pos;
 481         os_free(interfaces->global_iface_path);
 482         interfaces->global_iface_path = os_strdup(path);
 483         if (interfaces->global_iface_path == NULL)
 484                 return -1;
 485         pos = os_strrchr(interfaces->global_iface_path, '/');
 486         if (pos == NULL) {
 487                 wpa_printf(MSG_ERROR, "No '/' in the global control interface "
 488                            "file");
 489                 os_free(interfaces->global_iface_path);
 490                 interfaces->global_iface_path = NULL;
 491                 return -1;
 492         }
 493
 494         *pos = '\0';
 495         interfaces->global_iface_name = pos + 1;
 496
 497         return 0;
 498 }
 499
 500
 501 static int hostapd_get_ctrl_iface_group(struct hapd_interfaces *interfaces,
 502                                         const char *group)
 503 {
 504 #ifndef CONFIG_NATIVE_WINDOWS
 505         struct group *grp;
 506         grp = getgrnam(group);
 507         if (grp == NULL) {
 508                 wpa_printf(MSG_ERROR, "Unknown group '%s'", group);
 509                 return -1;
 510         }
 511         interfaces->ctrl_iface_group = grp->gr_gid;
 512 #endif /* CONFIG_NATIVE_WINDOWS */
 513         return 0;
 514 }
 515
 516
 517 #ifdef CONFIG_WPS
 518 static int gen_uuid(const char *txt_addr)
 519 {
 520         u8 addr[ETH_ALEN];
 521         u8 uuid[UUID_LEN];
 522         char buf[100];
 523
 524         if (hwaddr_aton(txt_addr, addr) < 0)
 525                 return -1;
 526
 527         uuid_gen_mac_addr(addr, uuid);
 528         if (uuid_bin2str(uuid, buf, sizeof(buf)) < 0)
 529                 return -1;
 530
 531         printf("%s\n", buf);
 532
 533         return 0;
 534 }
 535 #endif /* CONFIG_WPS */
 536
 537
 538 #ifndef HOSTAPD_CLEANUP_INTERVAL
 539 #define HOSTAPD_CLEANUP_INTERVAL 10
 540 #endif /* HOSTAPD_CLEANUP_INTERVAL */
 541
 542 static int hostapd_periodic_call(struct hostapd_iface *iface, void *ctx)
 543 {
 544         hostapd_periodic_iface(iface);
 545         return 0;
 546 }
 547
 548
 549 /* Periodic cleanup tasks */
 550 static void hostapd_periodic(void *eloop_ctx, void *timeout_ctx)
 551 {
 552         struct hapd_interfaces *interfaces = eloop_ctx;
 553
 554         eloop_register_timeout(HOSTAPD_CLEANUP_INTERVAL, 0,
 555                                hostapd_periodic, interfaces, NULL);
 556         hostapd_for_each_interface(interfaces, hostapd_periodic_call, NULL);
 557 }
 558
 559
 560 int main(int argc, char *argv[])
 561 {
 562         struct hapd_interfaces interfaces;
 563         int ret = 1;
 564         size_t i, j;
 565         int c, debug = 0, daemonize = 0;
 566         char *pid_file = NULL;
 567         const char *log_file = NULL;
 568         const char *entropy_file = NULL;
 569         char **bss_config = NULL, **tmp_bss;
 570         size_t num_bss_configs = 0;
 571 #ifdef CONFIG_DEBUG_LINUX_TRACING
 572         int enable_trace_dbg = 0;
 573 #endif /* CONFIG_DEBUG_LINUX_TRACING */
 574         int start_ifaces_in_sync = 0;
 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         interfaces.global_ctrl_dst = NULL;
 590
 591         for (;;) {
 592                 c = getopt(argc, argv, "b:Bde:f:hKP:STtu:vg:G:");
 593                 if (c < 0)
 594                         break;
 595                 switch (c) {
 596                 case 'h':
 597                         usage();
 598                         break;
 599                 case 'd':
 600                         debug++;
 601                         if (wpa_debug_level > 0)
 602                                 wpa_debug_level--;
 603                         break;
 604                 case 'B':
 605                         daemonize++;
 606                         break;
 607                 case 'e':
 608                         entropy_file = optarg;
 609                         break;
 610                 case 'f':
 611                         log_file = optarg;
 612                         break;
 613                 case 'K':
 614                         wpa_debug_show_keys++;
 615                         break;
 616                 case 'P':
 617                         os_free(pid_file);
 618                         pid_file = os_rel2abs_path(optarg);
 619                         break;
 620                 case 't':
 621                         wpa_debug_timestamp++;
 622                         break;
 623 #ifdef CONFIG_DEBUG_LINUX_TRACING
 624                 case 'T':
 625                         enable_trace_dbg = 1;
 626                         break;
 627 #endif /* CONFIG_DEBUG_LINUX_TRACING */
 628                 case 'v':
 629                         show_version();
 630                         exit(1);
 631                         break;
 632                 case 'g':
 633                         if (hostapd_get_global_ctrl_iface(&interfaces, optarg))
 634                                 return -1;
 635                         break;
 636                 case 'G':
 637                         if (hostapd_get_ctrl_iface_group(&interfaces, optarg))
 638                                 return -1;
 639                         break;
 640                 case 'b':
 641                         tmp_bss = os_realloc_array(bss_config,
 642                                                    num_bss_configs + 1,
 643                                                    sizeof(char *));
 644                         if (tmp_bss == NULL)
 645                                 goto out;
 646                         bss_config = tmp_bss;
 647                         bss_config[num_bss_configs++] = optarg;
 648                         break;
 649                 case 'S':
 650                         start_ifaces_in_sync = 1;
 651                         break;
 652 #ifdef CONFIG_WPS
 653                 case 'u':
 654                         return gen_uuid(optarg);
 655 #endif /* CONFIG_WPS */
 656                 default:
 657                         usage();
 658                         break;
 659                 }
 660         }
 661
 662         if (optind == argc && interfaces.global_iface_path == NULL &&
 663             num_bss_configs == 0)
 664                 usage();
 665
 666         wpa_msg_register_ifname_cb(hostapd_msg_ifname_cb);
 667
 668         if (log_file)
 669                 wpa_debug_open_file(log_file);
 670         else
 671                 wpa_debug_setup_stdout();
 672 #ifdef CONFIG_DEBUG_LINUX_TRACING
 673         if (enable_trace_dbg) {
 674                 int tret = wpa_debug_open_linux_tracing();
 675                 if (tret) {
 676                         wpa_printf(MSG_ERROR, "Failed to enable trace logging");
 677                         return -1;
 678                 }
 679         }
 680 #endif /* CONFIG_DEBUG_LINUX_TRACING */
 681
 682         interfaces.count = argc - optind;
 683         if (interfaces.count || num_bss_configs) {
 684                 interfaces.iface = os_calloc(interfaces.count + num_bss_configs,
 685                                              sizeof(struct hostapd_iface *));
 686                 if (interfaces.iface == NULL) {
 687                         wpa_printf(MSG_ERROR, "malloc failed");
 688                         return -1;
 689                 }
 690         }
 691
 692         if (hostapd_global_init(&interfaces, entropy_file)) {
 693                 wpa_printf(MSG_ERROR, "Failed to initialize global context");
 694                 return -1;
 695         }
 696
 697         eloop_register_timeout(HOSTAPD_CLEANUP_INTERVAL, 0,
 698                                hostapd_periodic, &interfaces, NULL);
 699
 700         if (fst_global_init()) {
 701                 wpa_printf(MSG_ERROR,
 702                            "Failed to initialize global FST context");
 703                 goto out;
 704         }
 705
 706 #if defined(CONFIG_FST) && defined(CONFIG_CTRL_IFACE)
 707         if (!fst_global_add_ctrl(fst_ctrl_cli))
 708                 wpa_printf(MSG_WARNING, "Failed to add CLI FST ctrl");
 709 #endif /* CONFIG_FST && CONFIG_CTRL_IFACE */
 710
 711         /* Allocate and parse configuration for full interface files */
 712         for (i = 0; i < interfaces.count; i++) {
 713                 interfaces.iface[i] = hostapd_interface_init(&interfaces,
 714                                                              argv[optind + i],
 715                                                              debug);
 716                 if (!interfaces.iface[i]) {
 717                         wpa_printf(MSG_ERROR, "Failed to initialize interface");
 718                         goto out;
 719                 }
 720                 if (start_ifaces_in_sync)
 721                         interfaces.iface[i]->need_to_start_in_sync = 1;
 722         }
 723
 724         /* Allocate and parse configuration for per-BSS files */
 725         for (i = 0; i < num_bss_configs; i++) {
 726                 struct hostapd_iface *iface;
 727                 char *fname;
 728
 729                 wpa_printf(MSG_INFO, "BSS config: %s", bss_config[i]);
 730                 fname = os_strchr(bss_config[i], ':');
 731                 if (fname == NULL) {
 732                         wpa_printf(MSG_ERROR,
 733                                    "Invalid BSS config identifier '%s'",
 734                                    bss_config[i]);
 735                         goto out;
 736                 }
 737                 *fname++ = '\0';
 738                 iface = hostapd_interface_init_bss(&interfaces, bss_config[i],
 739                                                    fname, debug);
 740                 if (iface == NULL)
 741                         goto out;
 742                 for (j = 0; j < interfaces.count; j++) {
 743                         if (interfaces.iface[j] == iface)
 744                                 break;
 745                 }
 746                 if (j == interfaces.count) {
 747                         struct hostapd_iface **tmp;
 748                         tmp = os_realloc_array(interfaces.iface,
 749                                                interfaces.count + 1,
 750                                                sizeof(struct hostapd_iface *));
 751                         if (tmp == NULL) {
 752                                 hostapd_interface_deinit_free(iface);
 753                                 goto out;
 754                         }
 755                         interfaces.iface = tmp;
 756                         interfaces.iface[interfaces.count++] = iface;
 757                 }
 758         }
 759
 760         /*
 761          * Enable configured interfaces. Depending on channel configuration,
 762          * this may complete full initialization before returning or use a
 763          * callback mechanism to complete setup in case of operations like HT
 764          * co-ex scans, ACS, or DFS are needed to determine channel parameters.
 765          * In such case, the interface will be enabled from eloop context within
 766          * hostapd_global_run().
 767          */
 768         interfaces.terminate_on_error = interfaces.count;
 769         for (i = 0; i < interfaces.count; i++) {
 770                 if (hostapd_driver_init(interfaces.iface[i]) ||
 771                     hostapd_setup_interface(interfaces.iface[i]))
 772                         goto out;
 773         }
 774
 775         hostapd_global_ctrl_iface_init(&interfaces);
 776
 777         if (hostapd_global_run(&interfaces, daemonize, pid_file)) {
 778                 wpa_printf(MSG_ERROR, "Failed to start eloop");
 779                 goto out;
 780         }
 781
 782         ret = 0;
 783
 784  out:
 785         hostapd_global_ctrl_iface_deinit(&interfaces);
 786         /* Deinitialize all interfaces */
 787         for (i = 0; i < interfaces.count; i++) {
 788                 if (!interfaces.iface[i])
 789                         continue;
 790                 interfaces.iface[i]->driver_ap_teardown =
 791                         !!(interfaces.iface[i]->drv_flags &
 792                            WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
 793                 hostapd_interface_deinit_free(interfaces.iface[i]);
 794         }
 795         os_free(interfaces.iface);
 796
 797         eloop_cancel_timeout(hostapd_periodic, &interfaces, NULL);
 798         hostapd_global_deinit(pid_file);
 799         os_free(pid_file);
 800
 801         if (log_file)
 802                 wpa_debug_close_file();
 803         wpa_debug_close_linux_tracing();
 804
 805         os_free(bss_config);
 806
 807         fst_global_deinit();
 808
 809         os_program_deinit();
 810
 811         return ret;
 812 }