hostapd/hostapd.c

   1 /*
   2  * hostapd / Initialization and configuration
   3  * Copyright (c) 2002-2008, 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 "includes.h"
  16 #ifndef CONFIG_NATIVE_WINDOWS
  17 #include <syslog.h>
  18 #endif /* CONFIG_NATIVE_WINDOWS */
  19
  20 #include "eloop.h"
  21 #include "hostapd.h"
  22 #include "ieee802_1x.h"
  23 #include "ieee802_11.h"
  24 #include "beacon.h"
  25 #include "hw_features.h"
  26 #include "accounting.h"
  27 #include "eapol_sm.h"
  28 #include "iapp.h"
  29 #include "ap.h"
  30 #include "ieee802_11_auth.h"
  31 #include "ap_list.h"
  32 #include "sta_info.h"
  33 #include "driver.h"
  34 #include "radius/radius_client.h"
  35 #include "radius/radius_server.h"
  36 #include "wpa.h"
  37 #include "preauth.h"
  38 #include "wme.h"
  39 #include "vlan_init.h"
  40 #include "ctrl_iface.h"
  41 #include "tls.h"
  42 #include "eap_server/eap_sim_db.h"
  43 #include "eap_server/eap.h"
  44 #include "eap_server/tncs.h"
  45 #include "version.h"
  46 #include "l2_packet/l2_packet.h"
  47
  48
  49 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
  50                                        size_t identity_len, int phase2,
  51                                        struct eap_user *user);
  52
  53 struct hapd_interfaces {
  54         size_t count;
  55         struct hostapd_iface **iface;
  56 };
  57
  58 unsigned char rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
  59
  60
  61 extern int wpa_debug_level;
  62 extern int wpa_debug_show_keys;
  63 extern int wpa_debug_timestamp;
  64
  65
  66 static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
  67                               int level, const char *txt, size_t len)
  68 {
  69         struct hostapd_data *hapd = ctx;
  70         char *format, *module_str;
  71         int maxlen;
  72         int conf_syslog_level, conf_stdout_level;
  73         unsigned int conf_syslog, conf_stdout;
  74
  75         maxlen = len + 100;
  76         format = os_malloc(maxlen);
  77         if (!format)
  78                 return;
  79
  80         if (hapd && hapd->conf) {
  81                 conf_syslog_level = hapd->conf->logger_syslog_level;
  82                 conf_stdout_level = hapd->conf->logger_stdout_level;
  83                 conf_syslog = hapd->conf->logger_syslog;
  84                 conf_stdout = hapd->conf->logger_stdout;
  85         } else {
  86                 conf_syslog_level = conf_stdout_level = 0;
  87                 conf_syslog = conf_stdout = (unsigned int) -1;
  88         }
  89
  90         switch (module) {
  91         case HOSTAPD_MODULE_IEEE80211:
  92                 module_str = "IEEE 802.11";
  93                 break;
  94         case HOSTAPD_MODULE_IEEE8021X:
  95                 module_str = "IEEE 802.1X";
  96                 break;
  97         case HOSTAPD_MODULE_RADIUS:
  98                 module_str = "RADIUS";
  99                 break;
 100         case HOSTAPD_MODULE_WPA:
 101                 module_str = "WPA";
 102                 break;
 103         case HOSTAPD_MODULE_DRIVER:
 104                 module_str = "DRIVER";
 105                 break;
 106         case HOSTAPD_MODULE_IAPP:
 107                 module_str = "IAPP";
 108                 break;
 109         case HOSTAPD_MODULE_MLME:
 110                 module_str = "MLME";
 111                 break;
 112         default:
 113                 module_str = NULL;
 114                 break;
 115         }
 116
 117         if (hapd && hapd->conf && addr)
 118                 os_snprintf(format, maxlen, "%s: STA " MACSTR "%s%s: %s",
 119                             hapd->conf->iface, MAC2STR(addr),
 120                             module_str ? " " : "", module_str, txt);
 121         else if (hapd && hapd->conf)
 122                 os_snprintf(format, maxlen, "%s:%s%s %s",
 123                             hapd->conf->iface, module_str ? " " : "",
 124                             module_str, txt);
 125         else if (addr)
 126                 os_snprintf(format, maxlen, "STA " MACSTR "%s%s: %s",
 127                             MAC2STR(addr), module_str ? " " : "",
 128                             module_str, txt);
 129         else
 130                 os_snprintf(format, maxlen, "%s%s%s",
 131                             module_str, module_str ? ": " : "", txt);
 132
 133         if ((conf_stdout & module) && level >= conf_stdout_level) {
 134                 wpa_debug_print_timestamp();
 135                 printf("%s\n", format);
 136         }
 137
 138 #ifndef CONFIG_NATIVE_WINDOWS
 139         if ((conf_syslog & module) && level >= conf_syslog_level) {
 140                 int priority;
 141                 switch (level) {
 142                 case HOSTAPD_LEVEL_DEBUG_VERBOSE:
 143                 case HOSTAPD_LEVEL_DEBUG:
 144                         priority = LOG_DEBUG;
 145                         break;
 146                 case HOSTAPD_LEVEL_INFO:
 147                         priority = LOG_INFO;
 148                         break;
 149                 case HOSTAPD_LEVEL_NOTICE:
 150                         priority = LOG_NOTICE;
 151                         break;
 152                 case HOSTAPD_LEVEL_WARNING:
 153                         priority = LOG_WARNING;
 154                         break;
 155                 default:
 156                         priority = LOG_INFO;
 157                         break;
 158                 }
 159                 syslog(priority, "%s", format);
 160         }
 161 #endif /* CONFIG_NATIVE_WINDOWS */
 162
 163         os_free(format);
 164 }
 165
 166
 167 static void hostapd_deauth_all_stas(struct hostapd_data *hapd)
 168 {
 169         u8 addr[ETH_ALEN];
 170
 171         /* New Prism2.5/3 STA firmware versions seem to have issues with this
 172          * broadcast deauth frame. This gets the firmware in odd state where
 173          * nothing works correctly, so let's skip sending this for the hostap
 174          * driver. */
 175
 176         if (os_strcmp(hapd->driver->name, "hostap") != 0) {
 177                 os_memset(addr, 0xff, ETH_ALEN);
 178                 hostapd_sta_deauth(hapd, addr,
 179                                    WLAN_REASON_PREV_AUTH_NOT_VALID);
 180         }
 181 }
 182
 183
 184 /**
 185  * hostapd_prune_associations - Remove extraneous associations
 186  * @hapd: Pointer to BSS data for the most recent association
 187  * @sta: Pointer to the associated STA data
 188  *
 189  * This function looks through all radios and BSS's for previous
 190  * (stale) associations of STA. If any are found they are removed.
 191  */
 192 static void hostapd_prune_associations(struct hostapd_data *hapd,
 193                                        struct sta_info *sta)
 194 {
 195         struct sta_info *osta;
 196         struct hostapd_data *ohapd;
 197         size_t i, j;
 198         struct hapd_interfaces *interfaces = eloop_get_user_data();
 199
 200         for (i = 0; i < interfaces->count; i++) {
 201                 for (j = 0; j < interfaces->iface[i]->num_bss; j++) {
 202                         ohapd = interfaces->iface[i]->bss[j];
 203                         if (ohapd == hapd)
 204                                 continue;
 205                         osta = ap_get_sta(ohapd, sta->addr);
 206                         if (!osta)
 207                                 continue;
 208
 209                         ap_sta_disassociate(ohapd, osta,
 210                                             WLAN_REASON_UNSPECIFIED);
 211                 }
 212         }
 213 }
 214
 215
 216 /**
 217  * hostapd_new_assoc_sta - Notify that a new station associated with the AP
 218  * @hapd: Pointer to BSS data
 219  * @sta: Pointer to the associated STA data
 220  * @reassoc: 1 to indicate this was a re-association; 0 = first association
 221  *
 222  * This function will be called whenever a station associates with the AP. It
 223  * can be called for ieee802_11.c for drivers that export MLME to hostapd and
 224  * from driver_*.c for drivers that take care of management frames (IEEE 802.11
 225  * authentication and association) internally.
 226  */
 227 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
 228                            int reassoc)
 229 {
 230         if (hapd->tkip_countermeasures) {
 231                 hostapd_sta_deauth(hapd, sta->addr,
 232                                    WLAN_REASON_MICHAEL_MIC_FAILURE);
 233                 return;
 234         }
 235
 236         hostapd_prune_associations(hapd, sta);
 237
 238         /* IEEE 802.11F (IAPP) */
 239         if (hapd->conf->ieee802_11f)
 240                 iapp_new_station(hapd->iapp, sta);
 241
 242         /* Start accounting here, if IEEE 802.1X and WPA are not used.
 243          * IEEE 802.1X/WPA code will start accounting after the station has
 244          * been authorized. */
 245         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa)
 246                 accounting_sta_start(hapd, sta);
 247
 248         hostapd_wme_sta_config(hapd, sta);
 249
 250         /* Start IEEE 802.1X authentication process for new stations */
 251         ieee802_1x_new_station(hapd, sta);
 252         if (reassoc) {
 253                 if (sta->auth_alg != WLAN_AUTH_FT)
 254                         wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
 255         } else
 256                 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
 257 }
 258
 259
 260 #ifdef EAP_SERVER
 261 static int hostapd_sim_db_cb_sta(struct hostapd_data *hapd,
 262                                  struct sta_info *sta, void *ctx)
 263 {
 264         if (eapol_auth_eap_pending_cb(sta->eapol_sm, ctx) == 0)
 265                 return 1;
 266         return 0;
 267 }
 268
 269
 270 static void hostapd_sim_db_cb(void *ctx, void *session_ctx)
 271 {
 272         struct hostapd_data *hapd = ctx;
 273         if (ap_for_each_sta(hapd, hostapd_sim_db_cb_sta, session_ctx) == 0)
 274                 radius_server_eap_pending_cb(hapd->radius_srv, session_ctx);
 275 }
 276 #endif /* EAP_SERVER */
 277
 278
 279 static void handle_term(int sig, void *eloop_ctx, void *signal_ctx)
 280 {
 281         printf("Signal %d received - terminating\n", sig);
 282         eloop_terminate();
 283 }
 284
 285
 286 static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
 287                                   struct wpa_auth_config *wconf)
 288 {
 289         wconf->wpa = conf->wpa;
 290         wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
 291         wconf->wpa_pairwise = conf->wpa_pairwise;
 292         wconf->wpa_group = conf->wpa_group;
 293         wconf->wpa_group_rekey = conf->wpa_group_rekey;
 294         wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
 295         wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
 296         wconf->rsn_pairwise = conf->rsn_pairwise;
 297         wconf->rsn_preauth = conf->rsn_preauth;
 298         wconf->eapol_version = conf->eapol_version;
 299         wconf->peerkey = conf->peerkey;
 300         wconf->wme_enabled = conf->wme_enabled;
 301         wconf->okc = conf->okc;
 302 #ifdef CONFIG_IEEE80211W
 303         wconf->ieee80211w = conf->ieee80211w;
 304 #endif /* CONFIG_IEEE80211W */
 305 #ifdef CONFIG_IEEE80211R
 306         wconf->ssid_len = conf->ssid.ssid_len;
 307         if (wconf->ssid_len > SSID_LEN)
 308                 wconf->ssid_len = SSID_LEN;
 309         os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
 310         os_memcpy(wconf->mobility_domain, conf->mobility_domain,
 311                   MOBILITY_DOMAIN_ID_LEN);
 312         if (conf->nas_identifier &&
 313             os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
 314                 wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
 315                 os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
 316                           wconf->r0_key_holder_len);
 317         }
 318         os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
 319         wconf->r0_key_lifetime = conf->r0_key_lifetime;
 320         wconf->reassociation_deadline = conf->reassociation_deadline;
 321         wconf->r0kh_list = conf->r0kh_list;
 322         wconf->r1kh_list = conf->r1kh_list;
 323         wconf->pmk_r1_push = conf->pmk_r1_push;
 324 #endif /* CONFIG_IEEE80211R */
 325 }
 326
 327
 328 #ifndef CONFIG_NATIVE_WINDOWS
 329 static void handle_reload(int sig, void *eloop_ctx, void *signal_ctx)
 330 {
 331         struct hapd_interfaces *hapds = (struct hapd_interfaces *) eloop_ctx;
 332         struct hostapd_config *newconf;
 333         size_t i;
 334         struct wpa_auth_config wpa_auth_conf;
 335
 336         printf("Signal %d received - reloading configuration\n", sig);
 337
 338         for (i = 0; i < hapds->count; i++) {
 339                 struct hostapd_data *hapd = hapds->iface[i]->bss[0];
 340                 newconf = hostapd_config_read(hapds->iface[i]->config_fname);
 341                 if (newconf == NULL) {
 342                         printf("Failed to read new configuration file - "
 343                                "continuing with old.\n");
 344                         continue;
 345                 }
 346                 /* TODO: update dynamic data based on changed configuration
 347                  * items (e.g., open/close sockets, remove stations added to
 348                  * deny list, etc.) */
 349                 radius_client_flush(hapd->radius, 0);
 350                 hostapd_config_free(hapd->iconf);
 351
 352                 hostapd_wpa_auth_conf(&newconf->bss[0], &wpa_auth_conf);
 353                 wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
 354
 355                 hapd->iconf = newconf;
 356                 hapd->conf = &newconf->bss[0];
 357                 hapds->iface[i]->conf = newconf;
 358
 359                 if (hostapd_setup_wpa_psk(hapd->conf)) {
 360                         wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
 361                                    "after reloading configuration");
 362                 }
 363         }
 364 }
 365
 366
 367 #ifdef HOSTAPD_DUMP_STATE
 368 static void hostapd_dump_state(struct hostapd_data *hapd)
 369 {
 370         FILE *f;
 371         time_t now;
 372         struct sta_info *sta;
 373         int i;
 374         char *buf;
 375
 376         if (!hapd->conf->dump_log_name) {
 377                 printf("Dump file not defined - ignoring dump request\n");
 378                 return;
 379         }
 380
 381         printf("Dumping hostapd state to '%s'\n", hapd->conf->dump_log_name);
 382         f = fopen(hapd->conf->dump_log_name, "w");
 383         if (f == NULL) {
 384                 printf("Could not open dump file '%s' for writing.\n",
 385                        hapd->conf->dump_log_name);
 386                 return;
 387         }
 388
 389         time(&now);
 390         fprintf(f, "hostapd state dump - %s", ctime(&now));
 391         fprintf(f, "num_sta=%d num_sta_non_erp=%d "
 392                 "num_sta_no_short_slot_time=%d\n"
 393                 "num_sta_no_short_preamble=%d\n",
 394                 hapd->num_sta, hapd->iface->num_sta_non_erp,
 395                 hapd->iface->num_sta_no_short_slot_time,
 396                 hapd->iface->num_sta_no_short_preamble);
 397
 398         for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
 399                 fprintf(f, "\nSTA=" MACSTR "\n", MAC2STR(sta->addr));
 400
 401                 fprintf(f,
 402                         "  AID=%d flags=0x%x %s%s%s%s%s%s%s%s%s%s%s%s\n"
 403                         "  capability=0x%x listen_interval=%d\n",
 404                         sta->aid,
 405                         sta->flags,
 406                         (sta->flags & WLAN_STA_AUTH ? "[AUTH]" : ""),
 407                         (sta->flags & WLAN_STA_ASSOC ? "[ASSOC]" : ""),
 408                         (sta->flags & WLAN_STA_PS ? "[PS]" : ""),
 409                         (sta->flags & WLAN_STA_TIM ? "[TIM]" : ""),
 410                         (sta->flags & WLAN_STA_PERM ? "[PERM]" : ""),
 411                         (sta->flags & WLAN_STA_AUTHORIZED ? "[AUTHORIZED]" :
 412                          ""),
 413                         (sta->flags & WLAN_STA_PENDING_POLL ? "[PENDING_POLL" :
 414                          ""),
 415                         (sta->flags & WLAN_STA_SHORT_PREAMBLE ?
 416                          "[SHORT_PREAMBLE]" : ""),
 417                         (sta->flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""),
 418                         (sta->flags & WLAN_STA_WME ? "[WME]" : ""),
 419                         (sta->flags & WLAN_STA_MFP ? "[MFP]" : ""),
 420                         (sta->flags & WLAN_STA_NONERP ? "[NonERP]" : ""),
 421                         sta->capability,
 422                         sta->listen_interval);
 423
 424                 fprintf(f, "  supported_rates=");
 425                 for (i = 0; i < sta->supported_rates_len; i++)
 426                         fprintf(f, "%02x ", sta->supported_rates[i]);
 427                 fprintf(f, "\n");
 428
 429                 fprintf(f,
 430                         "  timeout_next=%s\n",
 431                         (sta->timeout_next == STA_NULLFUNC ? "NULLFUNC POLL" :
 432                          (sta->timeout_next == STA_DISASSOC ? "DISASSOC" :
 433                           "DEAUTH")));
 434
 435                 ieee802_1x_dump_state(f, "  ", sta);
 436         }
 437
 438         buf = os_malloc(4096);
 439         if (buf) {
 440                 int count = radius_client_get_mib(hapd->radius, buf, 4096);
 441                 if (count < 0)
 442                         count = 0;
 443                 else if (count > 4095)
 444                         count = 4095;
 445                 buf[count] = '\0';
 446                 fprintf(f, "%s", buf);
 447
 448                 count = radius_server_get_mib(hapd->radius_srv, buf, 4096);
 449                 if (count < 0)
 450                         count = 0;
 451                 else if (count > 4095)
 452                         count = 4095;
 453                 buf[count] = '\0';
 454                 fprintf(f, "%s", buf);
 455                 os_free(buf);
 456         }
 457         fclose(f);
 458 }
 459 #endif /* HOSTAPD_DUMP_STATE */
 460
 461
 462 static void handle_dump_state(int sig, void *eloop_ctx, void *signal_ctx)
 463 {
 464 #ifdef HOSTAPD_DUMP_STATE
 465         struct hapd_interfaces *hapds = (struct hapd_interfaces *) eloop_ctx;
 466         size_t i, j;
 467
 468         for (i = 0; i < hapds->count; i++) {
 469                 struct hostapd_iface *hapd_iface = hapds->iface[i];
 470                 for (j = 0; j < hapd_iface->num_bss; j++)
 471                         hostapd_dump_state(hapd_iface->bss[j]);
 472         }
 473 #endif /* HOSTAPD_DUMP_STATE */
 474 }
 475 #endif /* CONFIG_NATIVE_WINDOWS */
 476
 477 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
 478                                               char *ifname)
 479 {
 480         int i;
 481
 482         for (i = 0; i < NUM_WEP_KEYS; i++) {
 483                 if (hostapd_set_encryption(ifname, hapd, "none", NULL, i, NULL,
 484                                            0, i == 0 ? 1 : 0)) {
 485                         printf("Failed to clear default encryption keys "
 486                                "(ifname=%s keyidx=%d)\n", ifname, i);
 487                 }
 488         }
 489 }
 490
 491
 492 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
 493 {
 494         hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
 495         return 0;
 496 }
 497
 498
 499 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
 500 {
 501         int errors = 0, idx;
 502         struct hostapd_ssid *ssid = &hapd->conf->ssid;
 503
 504         idx = ssid->wep.idx;
 505         if (ssid->wep.default_len &&
 506             hostapd_set_encryption(hapd->conf->iface,
 507                                    hapd, "WEP", NULL, idx,
 508                                    ssid->wep.key[idx],
 509                                    ssid->wep.len[idx],
 510                                    idx == ssid->wep.idx)) {
 511                 printf("Could not set WEP encryption.\n");
 512                 errors++;
 513         }
 514
 515         if (ssid->dyn_vlan_keys) {
 516                 size_t i;
 517                 for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
 518                         const char *ifname;
 519                         struct hostapd_wep_keys *key = ssid->dyn_vlan_keys[i];
 520                         if (key == NULL)
 521                                 continue;
 522                         ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan,
 523                                                             i);
 524                         if (ifname == NULL)
 525                                 continue;
 526
 527                         idx = key->idx;
 528                         if (hostapd_set_encryption(ifname, hapd, "WEP", NULL,
 529                                                    idx, key->key[idx],
 530                                                    key->len[idx],
 531                                                    idx == key->idx)) {
 532                                 printf("Could not set dynamic VLAN WEP "
 533                                        "encryption.\n");
 534                                 errors++;
 535                         }
 536                 }
 537         }
 538
 539         return errors;
 540 }
 541
 542 /**
 543  * hostapd_cleanup - Per-BSS cleanup (deinitialization)
 544  * @hapd: Pointer to BSS data
 545  *
 546  * This function is used to free all per-BSS data structures and resources.
 547  * This gets called in a loop for each BSS between calls to
 548  * hostapd_cleanup_iface_pre() and hostapd_cleanup_iface() when an interface
 549  * is deinitialized. Most of the modules that are initialized in
 550  * hostapd_setup_bss() are deinitialized here.
 551  */
 552 static void hostapd_cleanup(struct hostapd_data *hapd)
 553 {
 554         hostapd_ctrl_iface_deinit(hapd);
 555
 556         os_free(hapd->default_wep_key);
 557         hapd->default_wep_key = NULL;
 558         iapp_deinit(hapd->iapp);
 559         hapd->iapp = NULL;
 560         accounting_deinit(hapd);
 561         rsn_preauth_iface_deinit(hapd);
 562         if (hapd->wpa_auth) {
 563                 wpa_deinit(hapd->wpa_auth);
 564                 hapd->wpa_auth = NULL;
 565
 566                 if (hostapd_set_privacy(hapd, 0)) {
 567                         wpa_printf(MSG_DEBUG, "Could not disable "
 568                                    "PrivacyInvoked for interface %s",
 569                                    hapd->conf->iface);
 570                 }
 571
 572                 if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
 573                         wpa_printf(MSG_DEBUG, "Could not remove generic "
 574                                    "information element from interface %s",
 575                                    hapd->conf->iface);
 576                 }
 577         }
 578         ieee802_1x_deinit(hapd);
 579         vlan_deinit(hapd);
 580         hostapd_acl_deinit(hapd);
 581         radius_client_deinit(hapd->radius);
 582         hapd->radius = NULL;
 583         radius_server_deinit(hapd->radius_srv);
 584         hapd->radius_srv = NULL;
 585
 586 #ifdef CONFIG_IEEE80211R
 587         l2_packet_deinit(hapd->l2);
 588 #endif /* CONFIG_IEEE80211R */
 589
 590         hostapd_wireless_event_deinit(hapd);
 591
 592 #ifdef EAP_TLS_FUNCS
 593         if (hapd->ssl_ctx) {
 594                 tls_deinit(hapd->ssl_ctx);
 595                 hapd->ssl_ctx = NULL;
 596         }
 597 #endif /* EAP_TLS_FUNCS */
 598
 599 #ifdef EAP_SERVER
 600         if (hapd->eap_sim_db_priv) {
 601                 eap_sim_db_deinit(hapd->eap_sim_db_priv);
 602                 hapd->eap_sim_db_priv = NULL;
 603         }
 604 #endif /* EAP_SERVER */
 605
 606         if (hapd->interface_added &&
 607             hostapd_bss_remove(hapd, hapd->conf->iface)) {
 608                 printf("Failed to remove BSS interface %s\n",
 609                        hapd->conf->iface);
 610         }
 611 }
 612
 613
 614 /**
 615  * hostapd_cleanup_iface_pre - Preliminary per-interface cleanup
 616  * @iface: Pointer to interface data
 617  *
 618  * This function is called before per-BSS data structures are deinitialized
 619  * with hostapd_cleanup().
 620  */
 621 static void hostapd_cleanup_iface_pre(struct hostapd_iface *iface)
 622 {
 623 }
 624
 625
 626 /**
 627  * hostapd_cleanup_iface - Complete per-interface cleanup
 628  * @iface: Pointer to interface data
 629  *
 630  * This function is called after per-BSS data structures are deinitialized
 631  * with hostapd_cleanup().
 632  */
 633 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
 634 {
 635         hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
 636         iface->hw_features = NULL;
 637         os_free(iface->current_rates);
 638         iface->current_rates = NULL;
 639         ap_list_deinit(iface);
 640         hostapd_config_free(iface->conf);
 641         iface->conf = NULL;
 642
 643         os_free(iface->config_fname);
 644         os_free(iface->bss);
 645         os_free(iface);
 646 }
 647
 648
 649 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
 650 {
 651         int i;
 652
 653         hostapd_broadcast_wep_set(hapd);
 654
 655         if (hapd->conf->ssid.wep.default_len)
 656                 return 0;
 657
 658         for (i = 0; i < 4; i++) {
 659                 if (hapd->conf->ssid.wep.key[i] &&
 660                     hostapd_set_encryption(iface, hapd, "WEP", NULL,
 661                                            i, hapd->conf->ssid.wep.key[i],
 662                                            hapd->conf->ssid.wep.len[i],
 663                                            i == hapd->conf->ssid.wep.idx)) {
 664                         printf("Could not set WEP encryption.\n");
 665                         return -1;
 666                 }
 667                 if (hapd->conf->ssid.wep.key[i] &&
 668                     i == hapd->conf->ssid.wep.idx)
 669                         hostapd_set_privacy(hapd, 1);
 670         }
 671
 672         return 0;
 673 }
 674
 675
 676 static int hostapd_flush_old_stations(struct hostapd_data *hapd)
 677 {
 678         int ret = 0;
 679
 680         wpa_printf(MSG_DEBUG, "Flushing old station entries");
 681         if (hostapd_flush(hapd)) {
 682                 printf("Could not connect to kernel driver.\n");
 683                 ret = -1;
 684         }
 685         wpa_printf(MSG_DEBUG, "Deauthenticate all stations");
 686         hostapd_deauth_all_stas(hapd);
 687
 688         return ret;
 689 }
 690
 691
 692 static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
 693                                     logger_level level, const char *txt)
 694 {
 695         struct hostapd_data *hapd = ctx;
 696         int hlevel;
 697
 698         switch (level) {
 699         case LOGGER_WARNING:
 700                 hlevel = HOSTAPD_LEVEL_WARNING;
 701                 break;
 702         case LOGGER_INFO:
 703                 hlevel = HOSTAPD_LEVEL_INFO;
 704                 break;
 705         case LOGGER_DEBUG:
 706         default:
 707                 hlevel = HOSTAPD_LEVEL_DEBUG;
 708                 break;
 709         }
 710
 711         hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
 712 }
 713
 714
 715 static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
 716                                         u16 reason)
 717 {
 718         struct hostapd_data *hapd = ctx;
 719         struct sta_info *sta;
 720
 721         wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
 722                    "STA " MACSTR " reason %d",
 723                    __func__, MAC2STR(addr), reason);
 724
 725         sta = ap_get_sta(hapd, addr);
 726         hostapd_sta_deauth(hapd, addr, reason);
 727         if (sta == NULL)
 728                 return;
 729         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_AUTHORIZED);
 730         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 731         eloop_register_timeout(0, 0, ap_handle_timer, hapd, sta);
 732         sta->timeout_next = STA_REMOVE;
 733 }
 734
 735
 736 static void hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
 737 {
 738         struct hostapd_data *hapd = ctx;
 739         ieee80211_michael_mic_failure(hapd, addr, 0);
 740 }
 741
 742
 743 static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
 744                                        wpa_eapol_variable var, int value)
 745 {
 746         struct hostapd_data *hapd = ctx;
 747         struct sta_info *sta = ap_get_sta(hapd, addr);
 748         if (sta == NULL)
 749                 return;
 750         switch (var) {
 751         case WPA_EAPOL_portEnabled:
 752                 ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
 753                 break;
 754         case WPA_EAPOL_portValid:
 755                 ieee802_1x_notify_port_valid(sta->eapol_sm, value);
 756                 break;
 757         case WPA_EAPOL_authorized:
 758                 ieee802_1x_set_sta_authorized(hapd, sta, value);
 759                 break;
 760         case WPA_EAPOL_portControl_Auto:
 761                 if (sta->eapol_sm)
 762                         sta->eapol_sm->portControl = Auto;
 763                 break;
 764         case WPA_EAPOL_keyRun:
 765                 if (sta->eapol_sm)
 766                         sta->eapol_sm->keyRun = value ? TRUE : FALSE;
 767                 break;
 768         case WPA_EAPOL_keyAvailable:
 769                 if (sta->eapol_sm)
 770                         sta->eapol_sm->eap_if->eapKeyAvailable =
 771                                 value ? TRUE : FALSE;
 772                 break;
 773         case WPA_EAPOL_keyDone:
 774                 if (sta->eapol_sm)
 775                         sta->eapol_sm->keyDone = value ? TRUE : FALSE;
 776                 break;
 777         case WPA_EAPOL_inc_EapolFramesTx:
 778                 if (sta->eapol_sm)
 779                         sta->eapol_sm->dot1xAuthEapolFramesTx++;
 780                 break;
 781         }
 782 }
 783
 784
 785 static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
 786                                       wpa_eapol_variable var)
 787 {
 788         struct hostapd_data *hapd = ctx;
 789         struct sta_info *sta = ap_get_sta(hapd, addr);
 790         if (sta == NULL || sta->eapol_sm == NULL)
 791                 return -1;
 792         switch (var) {
 793         case WPA_EAPOL_keyRun:
 794                 return sta->eapol_sm->keyRun;
 795         case WPA_EAPOL_keyAvailable:
 796                 return sta->eapol_sm->eap_if->eapKeyAvailable;
 797         default:
 798                 return -1;
 799         }
 800 }
 801
 802
 803 static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
 804                                            const u8 *prev_psk)
 805 {
 806         struct hostapd_data *hapd = ctx;
 807         return hostapd_get_psk(hapd->conf, addr, prev_psk);
 808 }
 809
 810
 811 static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
 812                                     size_t *len)
 813 {
 814         struct hostapd_data *hapd = ctx;
 815         const u8 *key;
 816         size_t keylen;
 817         struct sta_info *sta;
 818
 819         sta = ap_get_sta(hapd, addr);
 820         if (sta == NULL)
 821                 return -1;
 822
 823         key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
 824         if (key == NULL)
 825                 return -1;
 826
 827         if (keylen > *len)
 828                 keylen = *len;
 829         os_memcpy(msk, key, keylen);
 830         *len = keylen;
 831
 832         return 0;
 833 }
 834
 835
 836 static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, const char *alg,
 837                                     const u8 *addr, int idx, u8 *key,
 838                                     size_t key_len)
 839 {
 840         struct hostapd_data *hapd = ctx;
 841         const char *ifname = hapd->conf->iface;
 842
 843         if (vlan_id > 0) {
 844                 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
 845                 if (ifname == NULL)
 846                         return -1;
 847         }
 848
 849         return hostapd_set_encryption(ifname, hapd, alg, addr, idx,
 850                                       key, key_len, 1);
 851 }
 852
 853
 854 static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
 855                                        u8 *seq)
 856 {
 857         struct hostapd_data *hapd = ctx;
 858         return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
 859 }
 860
 861
 862 static int hostapd_wpa_auth_get_seqnum_igtk(void *ctx, const u8 *addr, int idx,
 863                                             u8 *seq)
 864 {
 865         struct hostapd_data *hapd = ctx;
 866         return hostapd_get_seqnum_igtk(hapd->conf->iface, hapd, addr, idx,
 867                                        seq);
 868 }
 869
 870
 871 static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
 872                                        const u8 *data, size_t data_len,
 873                                        int encrypt)
 874 {
 875         struct hostapd_data *hapd = ctx;
 876         return hostapd_send_eapol(hapd, addr, data, data_len, encrypt);
 877 }
 878
 879
 880 static int hostapd_wpa_auth_for_each_sta(
 881         void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
 882         void *cb_ctx)
 883 {
 884         struct hostapd_data *hapd = ctx;
 885         struct sta_info *sta;
 886
 887         for (sta = hapd->sta_list; sta; sta = sta->next) {
 888                 if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
 889                         return 1;
 890         }
 891         return 0;
 892 }
 893
 894
 895 static int hostapd_wpa_auth_for_each_auth(
 896         void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
 897         void *cb_ctx)
 898 {
 899         struct hostapd_data *ohapd;
 900         size_t i, j;
 901         struct hapd_interfaces *interfaces = eloop_get_user_data();
 902
 903         for (i = 0; i < interfaces->count; i++) {
 904                 for (j = 0; j < interfaces->iface[i]->num_bss; j++) {
 905                         ohapd = interfaces->iface[i]->bss[j];
 906                         if (cb(ohapd->wpa_auth, cb_ctx))
 907                                 return 1;
 908                 }
 909         }
 910
 911         return 0;
 912 }
 913
 914
 915 static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
 916                                        const u8 *data, size_t data_len)
 917 {
 918         struct hostapd_data *hapd = ctx;
 919
 920         if (hapd->driver && hapd->driver->send_ether)
 921                 return hapd->driver->send_ether(hapd->drv_priv, dst,
 922                                                 hapd->own_addr, proto,
 923                                                 data, data_len);
 924         if (hapd->l2 == NULL)
 925                 return -1;
 926         return l2_packet_send(hapd->l2, dst, proto, data, data_len);
 927 }
 928
 929
 930 #ifdef CONFIG_IEEE80211R
 931
 932 static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
 933                                            const u8 *data, size_t data_len)
 934 {
 935         struct hostapd_data *hapd = ctx;
 936         int res;
 937         struct ieee80211_mgmt *m;
 938         size_t mlen;
 939         struct sta_info *sta;
 940
 941         sta = ap_get_sta(hapd, dst);
 942         if (sta == NULL || sta->wpa_sm == NULL)
 943                 return -1;
 944
 945         m = os_zalloc(sizeof(*m) + data_len);
 946         if (m == NULL)
 947                 return -1;
 948         mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
 949         m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 950                                         WLAN_FC_STYPE_ACTION);
 951         os_memcpy(m->da, dst, ETH_ALEN);
 952         os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
 953         os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
 954         os_memcpy(&m->u, data, data_len);
 955
 956         res = hostapd_send_mgmt_frame(hapd, (u8 *) m, mlen, 0);
 957         os_free(m);
 958         return res;
 959 }
 960
 961
 962 static struct wpa_state_machine *
 963 hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
 964 {
 965         struct hostapd_data *hapd = ctx;
 966         struct sta_info *sta;
 967
 968         sta = ap_sta_add(hapd, sta_addr);
 969         if (sta == NULL)
 970                 return NULL;
 971         if (sta->wpa_sm)
 972                 return sta->wpa_sm;
 973
 974         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
 975         if (sta->wpa_sm == NULL) {
 976                 ap_free_sta(hapd, sta);
 977                 return NULL;
 978         }
 979         sta->auth_alg = WLAN_AUTH_FT;
 980
 981         return sta->wpa_sm;
 982 }
 983
 984
 985 static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
 986                                 size_t len)
 987 {
 988         struct hostapd_data *hapd = ctx;
 989         wpa_ft_rrb_rx(hapd->wpa_auth, src_addr, buf, len);
 990 }
 991
 992 #endif /* CONFIG_IEEE80211R */
 993
 994
 995 /**
 996  * hostapd_validate_bssid_configuration - Validate BSSID configuration
 997  * @iface: Pointer to interface data
 998  * Returns: 0 on success, -1 on failure
 999  *
1000  * This function is used to validate that the configured BSSIDs are valid.
1001  */
1002 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
1003 {
1004         u8 mask[ETH_ALEN] = { 0 };
1005         struct hostapd_data *hapd = iface->bss[0];
1006         unsigned int i = iface->conf->num_bss, bits = 0, j;
1007         int res;
1008
1009         /* Generate BSSID mask that is large enough to cover the BSSIDs. */
1010
1011         /* Determine the bits necessary to cover the number of BSSIDs. */
1012         for (i--; i; i >>= 1)
1013                 bits++;
1014
1015         /* Determine the bits necessary to any configured BSSIDs,
1016            if they are higher than the number of BSSIDs. */
1017         for (j = 0; j < iface->conf->num_bss; j++) {
1018                 if (hostapd_mac_comp_empty(iface->conf->bss[j].bssid) == 0)
1019                         continue;
1020
1021                 for (i = 0; i < ETH_ALEN; i++) {
1022                         mask[i] |=
1023                                 iface->conf->bss[j].bssid[i] ^
1024                                 hapd->own_addr[i];
1025                 }
1026         }
1027
1028         for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
1029                 ;
1030         j = 0;
1031         if (i < ETH_ALEN) {
1032                 j = (5 - i) * 8;
1033
1034                 while (mask[i] != 0) {
1035                         mask[i] >>= 1;
1036                         j++;
1037                 }
1038         }
1039
1040         if (bits < j)
1041                 bits = j;
1042
1043         if (bits > 40)
1044                 return -1;
1045
1046         os_memset(mask, 0xff, ETH_ALEN);
1047         j = bits / 8;
1048         for (i = 5; i > 5 - j; i--)
1049                 mask[i] = 0;
1050         j = bits % 8;
1051         while (j--)
1052                 mask[i] <<= 1;
1053
1054         wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
1055                    (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
1056
1057         res = hostapd_valid_bss_mask(hapd, hapd->own_addr, mask);
1058         if (res == 0)
1059                 return 0;
1060
1061         if (res < 0) {
1062                 printf("Driver did not accept BSSID mask " MACSTR " for start "
1063                        "address " MACSTR ".\n",
1064                        MAC2STR(mask), MAC2STR(hapd->own_addr));
1065                 return -1;
1066         }
1067
1068         for (i = 0; i < ETH_ALEN; i++) {
1069                 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
1070                         printf("Invalid BSSID mask " MACSTR " for start "
1071                                "address " MACSTR ".\n"
1072                                "Start address must be the first address in the"
1073                                " block (i.e., addr AND mask == addr).\n",
1074                                MAC2STR(mask), MAC2STR(hapd->own_addr));
1075                         return -1;
1076                 }
1077         }
1078
1079         return 0;
1080 }
1081
1082
1083 static int mac_in_conf(struct hostapd_config *conf, const void *a)
1084 {
1085         size_t i;
1086
1087         for (i = 0; i < conf->num_bss; i++) {
1088                 if (hostapd_mac_comp(conf->bss[i].bssid, a) == 0) {
1089                         return 1;
1090                 }
1091         }
1092
1093         return 0;
1094 }
1095
1096
1097 static int hostapd_setup_wpa(struct hostapd_data *hapd)
1098 {
1099         struct wpa_auth_config _conf;
1100         struct wpa_auth_callbacks cb;
1101         const u8 *wpa_ie;
1102         size_t wpa_ie_len;
1103
1104         hostapd_wpa_auth_conf(hapd->conf, &_conf);
1105         os_memset(&cb, 0, sizeof(cb));
1106         cb.ctx = hapd;
1107         cb.logger = hostapd_wpa_auth_logger;
1108         cb.disconnect = hostapd_wpa_auth_disconnect;
1109         cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
1110         cb.set_eapol = hostapd_wpa_auth_set_eapol;
1111         cb.get_eapol = hostapd_wpa_auth_get_eapol;
1112         cb.get_psk = hostapd_wpa_auth_get_psk;
1113         cb.get_msk = hostapd_wpa_auth_get_msk;
1114         cb.set_key = hostapd_wpa_auth_set_key;
1115         cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
1116         cb.get_seqnum_igtk = hostapd_wpa_auth_get_seqnum_igtk;
1117         cb.send_eapol = hostapd_wpa_auth_send_eapol;
1118         cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
1119         cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
1120         cb.send_ether = hostapd_wpa_auth_send_ether;
1121 #ifdef CONFIG_IEEE80211R
1122         cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
1123         cb.add_sta = hostapd_wpa_auth_add_sta;
1124 #endif /* CONFIG_IEEE80211R */
1125         hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
1126         if (hapd->wpa_auth == NULL) {
1127                 printf("WPA initialization failed.\n");
1128                 return -1;
1129         }
1130
1131         if (hostapd_set_privacy(hapd, 1)) {
1132                 wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
1133                            "for interface %s", hapd->conf->iface);
1134                 return -1;
1135         }
1136
1137         wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
1138         if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
1139                 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
1140                            "the kernel driver.");
1141                 return -1;
1142         }
1143
1144         if (rsn_preauth_iface_init(hapd)) {
1145                 printf("Initialization of RSN pre-authentication "
1146                        "failed.\n");
1147                 return -1;
1148         }
1149
1150         return 0;
1151
1152 }
1153
1154
1155 static int hostapd_setup_radius_srv(struct hostapd_data *hapd,
1156                                     struct hostapd_bss_config *conf)
1157 {
1158         struct radius_server_conf srv;
1159         os_memset(&srv, 0, sizeof(srv));
1160         srv.client_file = conf->radius_server_clients;
1161         srv.auth_port = conf->radius_server_auth_port;
1162         srv.conf_ctx = conf;
1163         srv.eap_sim_db_priv = hapd->eap_sim_db_priv;
1164         srv.ssl_ctx = hapd->ssl_ctx;
1165         srv.pac_opaque_encr_key = conf->pac_opaque_encr_key;
1166         srv.eap_fast_a_id = conf->eap_fast_a_id;
1167         srv.eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
1168         srv.tnc = conf->tnc;
1169         srv.ipv6 = conf->radius_server_ipv6;
1170         srv.get_eap_user = hostapd_radius_get_eap_user;
1171
1172         hapd->radius_srv = radius_server_init(&srv);
1173         if (hapd->radius_srv == NULL) {
1174                 printf("RADIUS server initialization failed.\n");
1175                 return -1;
1176         }
1177
1178         return 0;
1179 }
1180
1181
1182 /**
1183  * hostapd_setup_bss - Per-BSS setup (initialization)
1184  * @hapd: Pointer to BSS data
1185  * @first: Whether this BSS is the first BSS of an interface
1186  *
1187  * This function is used to initialize all per-BSS data structures and
1188  * resources. This gets called in a loop for each BSS when an interface is
1189  * initialized. Most of the modules that are initialized here will be
1190  * deinitialized in hostapd_cleanup().
1191  */
1192 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
1193 {
1194         struct hostapd_bss_config *conf = hapd->conf;
1195         u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
1196         int ssid_len, set_ssid;
1197
1198         if (!first) {
1199                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) {
1200                         /* Allocate the next available BSSID. */
1201                         do {
1202                                 inc_byte_array(hapd->own_addr, ETH_ALEN);
1203                         } while (mac_in_conf(hapd->iconf, hapd->own_addr));
1204                 } else {
1205                         /* Allocate the configured BSSID. */
1206                         os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
1207
1208                         if (hostapd_mac_comp(hapd->own_addr,
1209                                              hapd->iface->bss[0]->own_addr) ==
1210                             0) {
1211                                 printf("BSS '%s' may not have BSSID "
1212                                        "set to the MAC address of the radio\n",
1213                                        hapd->conf->iface);
1214                                 return -1;
1215                         }
1216                 }
1217
1218                 hapd->interface_added = 1;
1219                 if (hostapd_bss_add(hapd->iface->bss[0], hapd->conf->iface,
1220                                     hapd->own_addr)) {
1221                         printf("Failed to add BSS (BSSID=" MACSTR ")\n",
1222                                MAC2STR(hapd->own_addr));
1223                         return -1;
1224                 }
1225         }
1226
1227         /*
1228          * Fetch the SSID from the system and use it or,
1229          * if one was specified in the config file, verify they
1230          * match.
1231          */
1232         ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
1233         if (ssid_len < 0) {
1234                 printf("Could not read SSID from system\n");
1235                 return -1;
1236         }
1237         if (conf->ssid.ssid_set) {
1238                 /*
1239                  * If SSID is specified in the config file and it differs
1240                  * from what is being used then force installation of the
1241                  * new SSID.
1242                  */
1243                 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
1244                             os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
1245         } else {
1246                 /*
1247                  * No SSID in the config file; just use the one we got
1248                  * from the system.
1249                  */
1250                 set_ssid = 0;
1251                 conf->ssid.ssid_len = ssid_len;
1252                 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
1253                 conf->ssid.ssid[conf->ssid.ssid_len] = '\0';
1254         }
1255
1256         printf("Using interface %s with hwaddr " MACSTR " and ssid '%s'\n",
1257                hapd->conf->iface, MAC2STR(hapd->own_addr),
1258                hapd->conf->ssid.ssid);
1259
1260         if (hostapd_setup_wpa_psk(conf)) {
1261                 printf("WPA-PSK setup failed.\n");
1262                 return -1;
1263         }
1264
1265         /* Set flag for whether SSID is broadcast in beacons */
1266         if (hostapd_set_broadcast_ssid(hapd,
1267                                        !!hapd->conf->ignore_broadcast_ssid)) {
1268                 printf("Could not set broadcast SSID flag for kernel "
1269                        "driver\n");
1270                 return -1;
1271         }
1272
1273         if (hostapd_set_dtim_period(hapd, hapd->conf->dtim_period)) {
1274                 printf("Could not set DTIM period for kernel driver\n");
1275                 return -1;
1276         }
1277
1278         /* Set SSID for the kernel driver (to be used in beacon and probe
1279          * response frames) */
1280         if (set_ssid && hostapd_set_ssid(hapd, (u8 *) conf->ssid.ssid,
1281                                          conf->ssid.ssid_len)) {
1282                 printf("Could not set SSID for kernel driver\n");
1283                 return -1;
1284         }
1285
1286         if (wpa_debug_level == MSG_MSGDUMP)
1287                 conf->radius->msg_dumps = 1;
1288         hapd->radius = radius_client_init(hapd, conf->radius);
1289         if (hapd->radius == NULL) {
1290                 printf("RADIUS client initialization failed.\n");
1291                 return -1;
1292         }
1293
1294         if (hostapd_acl_init(hapd)) {
1295                 printf("ACL initialization failed.\n");
1296                 return -1;
1297         }
1298
1299         if (ieee802_1x_init(hapd)) {
1300                 printf("IEEE 802.1X initialization failed.\n");
1301                 return -1;
1302         }
1303
1304         if (hapd->conf->wpa && hostapd_setup_wpa(hapd))
1305                 return -1;
1306
1307         if (accounting_init(hapd)) {
1308                 printf("Accounting initialization failed.\n");
1309                 return -1;
1310         }
1311
1312         if (hapd->conf->ieee802_11f &&
1313             (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) {
1314                 printf("IEEE 802.11F (IAPP) initialization failed.\n");
1315                 return -1;
1316         }
1317
1318         if (hostapd_ctrl_iface_init(hapd)) {
1319                 printf("Failed to setup control interface\n");
1320                 return -1;
1321         }
1322
1323         if (vlan_init(hapd)) {
1324                 printf("VLAN initialization failed.\n");
1325                 return -1;
1326         }
1327
1328 #ifdef CONFIG_IEEE80211R
1329         hapd->l2 = l2_packet_init(hapd->conf->iface, NULL, ETH_P_RRB,
1330                                   hostapd_rrb_receive, hapd, 0);
1331         if (hapd->l2 == NULL &&
1332             (hapd->driver == NULL || hapd->driver->send_ether == NULL)) {
1333                 printf("Failed to open l2_packet interface\n");
1334                 return -1;
1335         }
1336 #endif /* CONFIG_IEEE80211R */
1337
1338         ieee802_11_set_beacon(hapd);
1339
1340         if (conf->radius_server_clients &&
1341             hostapd_setup_radius_srv(hapd, conf))
1342                 return -1;
1343
1344         return 0;
1345 }
1346
1347
1348 /**
1349  * setup_interface2 - Setup (initialize) an interface (part 2)
1350  * @iface: Pointer to interface data.
1351  * Returns: 0 on success; -1 on failure.
1352  *
1353  * Flushes old stations, sets the channel, DFS parameters, encryption,
1354  * beacons, and WDS links based on the configuration.
1355  */
1356 static int setup_interface2(struct hostapd_iface *iface)
1357 {
1358         struct hostapd_data *hapd = iface->bss[0];
1359         int freq;
1360         size_t j;
1361         int ret = 0;
1362         u8 *prev_addr;
1363
1364         hostapd_flush_old_stations(hapd);
1365         hostapd_set_privacy(hapd, 0);
1366
1367         if (hapd->iconf->channel) {
1368                 freq = hostapd_hw_get_freq(hapd, hapd->iconf->channel);
1369                 printf("Mode: %s  Channel: %d  Frequency: %d MHz\n",
1370                        hostapd_hw_mode_txt(hapd->iconf->hw_mode),
1371                        hapd->iconf->channel, freq);
1372
1373                 if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, freq)) {
1374                         printf("Could not set channel for kernel driver\n");
1375                         return -1;
1376                 }
1377         }
1378
1379         hostapd_broadcast_wep_clear(hapd);
1380         if (hostapd_setup_encryption(hapd->conf->iface, hapd))
1381                 return -1;
1382
1383         hostapd_set_beacon_int(hapd, hapd->iconf->beacon_int);
1384         ieee802_11_set_beacon(hapd);
1385
1386         if (hapd->iconf->rts_threshold > -1 &&
1387             hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1388                 printf("Could not set RTS threshold for kernel driver\n");
1389                 return -1;
1390         }
1391
1392         if (hapd->iconf->fragm_threshold > -1 &&
1393             hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1394                 printf("Could not set fragmentation threshold for kernel "
1395                        "driver\n");
1396                 return -1;
1397         }
1398
1399         prev_addr = hapd->own_addr;
1400
1401         for (j = 0; j < iface->num_bss; j++) {
1402                 hapd = iface->bss[j];
1403                 if (j)
1404                         os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1405                 if (hostapd_setup_bss(hapd, j == 0))
1406                         return -1;
1407                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1408                         prev_addr = hapd->own_addr;
1409         }
1410
1411         ap_list_init(iface);
1412
1413         if (hostapd_driver_commit(hapd) < 0) {
1414                 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1415                            "configuration", __func__);
1416                 return -1;
1417         }
1418
1419         return ret;
1420 }
1421
1422
1423 static void setup_interface_start(void *eloop_data, void *user_ctx);
1424 static void setup_interface2_handler(void *eloop_data, void *user_ctx);
1425
1426 /**
1427  * setup_interface_finalize - Finish setup interface & call the callback
1428  * @iface: Pointer to interface data.
1429  * @status: Status of the setup interface (0 on success; -1 on failure).
1430  * Returns: 0 on success; -1 on failure (e.g., was not in progress).
1431  */
1432 static int setup_interface_finalize(struct hostapd_iface *iface, int status)
1433 {
1434         hostapd_iface_cb cb;
1435
1436         if (!iface->setup_cb)
1437                 return -1;
1438
1439         eloop_cancel_timeout(setup_interface_start, iface, NULL);
1440         eloop_cancel_timeout(setup_interface2_handler, iface, NULL);
1441         hostapd_select_hw_mode_stop(iface);
1442
1443         cb = iface->setup_cb;
1444
1445         iface->setup_cb = NULL;
1446
1447         cb(iface, status);
1448
1449         return 0;
1450 }
1451
1452
1453 /**
1454  * setup_interface2_wrapper - Wrapper for setup_interface2()
1455  * @iface: Pointer to interface data.
1456  * @status: Status of the hw mode select.
1457  *
1458  * Wrapper for setup_interface2() to calls finalize function upon completion.
1459  */
1460 static void setup_interface2_wrapper(struct hostapd_iface *iface, int status)
1461 {
1462         int ret = status;
1463         if (ret)
1464                 printf("Could not select hw_mode and channel. (%d)\n", ret);
1465         else
1466                 ret = setup_interface2(iface);
1467
1468         setup_interface_finalize(iface, ret);
1469 }
1470
1471
1472 /**
1473  * setup_interface2_handler - Used for immediate call of setup_interface2
1474  * @eloop_data: Stores the struct hostapd_iface * for the interface.
1475  * @user_ctx: Unused.
1476  */
1477 static void setup_interface2_handler(void *eloop_data, void *user_ctx)
1478 {
1479         struct hostapd_iface *iface = eloop_data;
1480
1481         setup_interface2_wrapper(iface, 0);
1482 }
1483
1484
1485 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
1486                                        size_t identity_len, int phase2,
1487                                        struct eap_user *user)
1488 {
1489         const struct hostapd_eap_user *eap_user;
1490         int i, count;
1491
1492         eap_user = hostapd_get_eap_user(ctx, identity, identity_len, phase2);
1493         if (eap_user == NULL)
1494                 return -1;
1495
1496         if (user == NULL)
1497                 return 0;
1498
1499         os_memset(user, 0, sizeof(*user));
1500         count = EAP_USER_MAX_METHODS;
1501         if (count > EAP_MAX_METHODS)
1502                 count = EAP_MAX_METHODS;
1503         for (i = 0; i < count; i++) {
1504                 user->methods[i].vendor = eap_user->methods[i].vendor;
1505                 user->methods[i].method = eap_user->methods[i].method;
1506         }
1507
1508         if (eap_user->password) {
1509                 user->password = os_malloc(eap_user->password_len);
1510                 if (user->password == NULL)
1511                         return -1;
1512                 os_memcpy(user->password, eap_user->password,
1513                           eap_user->password_len);
1514                 user->password_len = eap_user->password_len;
1515                 user->password_hash = eap_user->password_hash;
1516         }
1517         user->force_version = eap_user->force_version;
1518         user->ttls_auth = eap_user->ttls_auth;
1519
1520         return 0;
1521 }
1522
1523
1524 /**
1525  * setup_interface1 - Setup (initialize) an interface (part 1)
1526  * @iface: Pointer to interface data
1527  * Returns: 0 on success, -1 on failure
1528  *
1529  * Initializes the driver interface, validates the configuration,
1530  * and sets driver parameters based on the configuration.
1531  * Schedules setup_interface2() to be called immediately or after
1532  * hardware mode setup takes place.
1533  */
1534 static int setup_interface1(struct hostapd_iface *iface)
1535 {
1536         struct hostapd_data *hapd = iface->bss[0];
1537         struct hostapd_bss_config *conf = hapd->conf;
1538         size_t i;
1539         char country[4];
1540         u8 *b = conf->bssid;
1541
1542         /*
1543          * Initialize the driver interface and make sure that all BSSes get
1544          * configured with a pointer to this driver interface.
1545          */
1546         if (b[0] | b[1] | b[2] | b[3] | b[4] | b[5]) {
1547                 hapd->drv_priv = hostapd_driver_init_bssid(hapd, b);
1548         } else {
1549                 hapd->drv_priv = hostapd_driver_init(hapd);
1550         }
1551
1552         if (hapd->drv_priv == NULL) {
1553                 printf("%s driver initialization failed.\n",
1554                         hapd->driver ? hapd->driver->name : "Unknown");
1555                 hapd->driver = NULL;
1556                 return -1;
1557         }
1558         for (i = 0; i < iface->num_bss; i++) {
1559                 iface->bss[i]->driver = hapd->driver;
1560                 iface->bss[i]->drv_priv = hapd->drv_priv;
1561         }
1562
1563         if (hostapd_validate_bssid_configuration(iface))
1564                 return -1;
1565
1566         os_memcpy(country, hapd->iconf->country, 3);
1567         country[3] = '\0';
1568         if (hostapd_set_country(hapd, country) < 0) {
1569                 printf("Failed to set country code\n");
1570                 return -1;
1571         }
1572
1573         if (hapd->iconf->ieee80211d || hapd->iconf->ieee80211h) {
1574                 if (hostapd_set_ieee80211d(hapd, 1) < 0) {
1575                         printf("Failed to set ieee80211d (%d)\n",
1576                                hapd->iconf->ieee80211d);
1577                         return -1;
1578                 }
1579         }
1580
1581         if (hapd->iconf->bridge_packets != INTERNAL_BRIDGE_DO_NOT_CONTROL &&
1582             hostapd_set_internal_bridge(hapd, hapd->iconf->bridge_packets)) {
1583                 printf("Failed to set bridge_packets for kernel driver\n");
1584                 return -1;
1585         }
1586
1587         /* TODO: merge with hostapd_driver_init() ? */
1588         if (hostapd_wireless_event_init(hapd) < 0)
1589                 return -1;
1590
1591         if (hostapd_get_hw_features(iface)) {
1592                 /* Not all drivers support this yet, so continue without hw
1593                  * feature data. */
1594         } else {
1595                 return hostapd_select_hw_mode_start(iface,
1596                                                     setup_interface2_wrapper);
1597         }
1598
1599         eloop_register_timeout(0, 0, setup_interface2_handler, iface, NULL);
1600         return 0;
1601 }
1602
1603
1604 /**
1605  * setup_interface_start - Handler to start setup interface
1606  * @eloop_data: Stores the struct hostapd_iface * for the interface.
1607  * @user_ctx: Unused.
1608  *
1609  * An eloop handler is used so that all errors can be processed by the
1610  * callback without introducing stack recursion.
1611  */
1612 static void setup_interface_start(void *eloop_data, void *user_ctx)
1613 {
1614         struct hostapd_iface *iface = eloop_data;
1615
1616         int ret;
1617
1618         ret = setup_interface1(iface);
1619         if (ret)
1620                 setup_interface_finalize(iface, ret);
1621 }
1622
1623
1624 /**
1625  * hostapd_setup_interface_start - Start the setup of an interface
1626  * @iface: Pointer to interface data.
1627  * @cb: The function to callback when done.
1628  * Returns:  0 if it starts successfully; cb will be called when done.
1629  *          -1 on failure; cb will not be called.
1630  *
1631  * Initializes the driver interface, validates the configuration,
1632  * and sets driver parameters based on the configuration.
1633  * Flushes old stations, sets the channel, DFS parameters, encryption,
1634  * beacons, and WDS links based on the configuration.
1635  */
1636 int hostapd_setup_interface_start(struct hostapd_iface *iface,
1637                                   hostapd_iface_cb cb)
1638 {
1639         if (iface->setup_cb) {
1640                 wpa_printf(MSG_DEBUG,
1641                            "%s: Interface setup already in progress.\n",
1642                            iface->bss[0]->conf->iface);
1643                 return -1;
1644         }
1645
1646         iface->setup_cb = cb;
1647
1648         eloop_register_timeout(0, 0, setup_interface_start, iface, NULL);
1649
1650         return 0;
1651 }
1652
1653
1654 /**
1655  * hostapd_setup_interace_stop - Stops the setup of an interface
1656  * @iface: Pointer to interface data
1657  * Returns:  0 if successfully stopped;
1658  *          -1 on failure (i.e., was not in progress)
1659  */
1660 int hostapd_setup_interface_stop(struct hostapd_iface *iface)
1661 {
1662         return setup_interface_finalize(iface, -1);
1663 }
1664
1665
1666 static void show_version(void)
1667 {
1668         fprintf(stderr,
1669                 "hostapd v" VERSION_STR "\n"
1670                 "User space daemon for IEEE 802.11 AP management,\n"
1671                 "IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n"
1672                 "Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi> "
1673                 "and contributors\n");
1674 }
1675
1676
1677 static void usage(void)
1678 {
1679         show_version();
1680         fprintf(stderr,
1681                 "\n"
1682                 "usage: hostapd [-hdBKtv] [-P <PID file>] "
1683                 "<configuration file(s)>\n"
1684                 "\n"
1685                 "options:\n"
1686                 "   -h   show this usage\n"
1687                 "   -d   show more debug messages (-dd for even more)\n"
1688                 "   -B   run daemon in the background\n"
1689                 "   -P   PID file\n"
1690                 "   -K   include key data in debug messages\n"
1691                 "   -t   include timestamps in some debug messages\n"
1692                 "   -v   show hostapd version\n");
1693
1694         exit(1);
1695 }
1696
1697
1698 /**
1699  * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1700  * @hapd_iface: Pointer to interface data
1701  * @conf: Pointer to per-interface configuration
1702  * @bss: Pointer to per-BSS configuration for this BSS
1703  * Returns: Pointer to allocated BSS data
1704  *
1705  * This function is used to allocate per-BSS data structure. This data will be
1706  * freed after hostapd_cleanup() is called for it during interface
1707  * deinitialization.
1708  */
1709 static struct hostapd_data *
1710 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1711                        struct hostapd_config *conf,
1712                        struct hostapd_bss_config *bss)
1713 {
1714         struct hostapd_data *hapd;
1715
1716         hapd = os_zalloc(sizeof(*hapd));
1717         if (hapd == NULL)
1718                 return NULL;
1719
1720         hapd->iconf = conf;
1721         hapd->conf = bss;
1722         hapd->iface = hapd_iface;
1723
1724         if (hapd->conf->individual_wep_key_len > 0) {
1725                 /* use key0 in individual key and key1 in broadcast key */
1726                 hapd->default_wep_key_idx = 1;
1727         }
1728
1729 #ifdef EAP_TLS_FUNCS
1730         if (hapd->conf->eap_server &&
1731             (hapd->conf->ca_cert || hapd->conf->server_cert ||
1732              hapd->conf->dh_file)) {
1733                 struct tls_connection_params params;
1734
1735                 hapd->ssl_ctx = tls_init(NULL);
1736                 if (hapd->ssl_ctx == NULL) {
1737                         printf("Failed to initialize TLS\n");
1738                         goto fail;
1739                 }
1740
1741                 os_memset(&params, 0, sizeof(params));
1742                 params.ca_cert = hapd->conf->ca_cert;
1743                 params.client_cert = hapd->conf->server_cert;
1744                 params.private_key = hapd->conf->private_key;
1745                 params.private_key_passwd = hapd->conf->private_key_passwd;
1746                 params.dh_file = hapd->conf->dh_file;
1747
1748                 if (tls_global_set_params(hapd->ssl_ctx, &params)) {
1749                         printf("Failed to set TLS parameters\n");
1750                         goto fail;
1751                 }
1752
1753                 if (tls_global_set_verify(hapd->ssl_ctx,
1754                                           hapd->conf->check_crl)) {
1755                         printf("Failed to enable check_crl\n");
1756                         goto fail;
1757                 }
1758         }
1759 #endif /* EAP_TLS_FUNCS */
1760
1761 #ifdef EAP_SERVER
1762         if (hapd->conf->eap_sim_db) {
1763                 hapd->eap_sim_db_priv =
1764                         eap_sim_db_init(hapd->conf->eap_sim_db,
1765                                         hostapd_sim_db_cb, hapd);
1766                 if (hapd->eap_sim_db_priv == NULL) {
1767                         printf("Failed to initialize EAP-SIM database "
1768                                "interface\n");
1769                         goto fail;
1770                 }
1771         }
1772 #endif /* EAP_SERVER */
1773
1774         if (hapd->conf->assoc_ap)
1775                 hapd->assoc_ap_state = WAIT_BEACON;
1776
1777         hapd->driver = hapd->iconf->driver;
1778
1779         return hapd;
1780
1781 #if defined(EAP_TLS_FUNCS) || defined(EAP_SERVER)
1782 fail:
1783 #endif
1784         /* TODO: cleanup allocated resources(?) */
1785         os_free(hapd);
1786         return NULL;
1787 }
1788
1789
1790 /**
1791  * hostapd_init - Allocate and initialize per-interface data
1792  * @config_file: Path to the configuration file
1793  * Returns: Pointer to the allocated interface data or %NULL on failure
1794  *
1795  * This function is used to allocate main data structures for per-interface
1796  * data. The allocated data buffer will be freed by calling
1797  * hostapd_cleanup_iface().
1798  */
1799 static struct hostapd_iface * hostapd_init(const char *config_file)
1800 {
1801         struct hostapd_iface *hapd_iface = NULL;
1802         struct hostapd_config *conf = NULL;
1803         struct hostapd_data *hapd;
1804         size_t i;
1805
1806         hapd_iface = os_zalloc(sizeof(*hapd_iface));
1807         if (hapd_iface == NULL)
1808                 goto fail;
1809
1810         hapd_iface->config_fname = os_strdup(config_file);
1811         if (hapd_iface->config_fname == NULL)
1812                 goto fail;
1813
1814         conf = hostapd_config_read(hapd_iface->config_fname);
1815         if (conf == NULL)
1816                 goto fail;
1817         hapd_iface->conf = conf;
1818
1819         hapd_iface->num_bss = conf->num_bss;
1820         hapd_iface->bss = os_zalloc(conf->num_bss *
1821                                     sizeof(struct hostapd_data *));
1822         if (hapd_iface->bss == NULL)
1823                 goto fail;
1824
1825         for (i = 0; i < conf->num_bss; i++) {
1826                 hapd = hapd_iface->bss[i] =
1827                         hostapd_alloc_bss_data(hapd_iface, conf,
1828                                                &conf->bss[i]);
1829                 if (hapd == NULL)
1830                         goto fail;
1831         }
1832
1833         return hapd_iface;
1834
1835 fail:
1836         if (conf)
1837                 hostapd_config_free(conf);
1838         if (hapd_iface) {
1839                 for (i = 0; hapd_iface->bss && i < hapd_iface->num_bss; i++) {
1840                         hapd = hapd_iface->bss[i];
1841                         if (hapd && hapd->ssl_ctx)
1842                                 tls_deinit(hapd->ssl_ctx);
1843                 }
1844
1845                 os_free(hapd_iface->config_fname);
1846                 os_free(hapd_iface->bss);
1847                 os_free(hapd_iface);
1848         }
1849         return NULL;
1850 }
1851
1852
1853 /**
1854  * register_drivers - Register driver interfaces
1855  *
1856  * This function is generated by Makefile (into driver_conf.c) to call all
1857  * configured driver interfaces to register them to core hostapd.
1858  */
1859 void register_drivers(void);
1860
1861
1862 /**
1863  * setup_interface_done - Callback when an interface is done being setup.
1864  * @iface: Pointer to interface data.
1865  * @status: Status of the interface setup (0 on success; -1 on failure).
1866  */
1867 static void setup_interface_done(struct hostapd_iface *iface, int status)
1868 {
1869         if (status) {
1870                 wpa_printf(MSG_DEBUG, "%s: Unable to setup interface.",
1871                            iface->bss[0]->conf->iface);
1872                 eloop_terminate();
1873         } else
1874                 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1875                            iface->bss[0]->conf->iface);
1876 }
1877
1878
1879 int main(int argc, char *argv[])
1880 {
1881         struct hapd_interfaces interfaces;
1882         int ret = 1, k;
1883         size_t i, j;
1884         int c, debug = 0, daemonize = 0, tnc = 0;
1885         const char *pid_file = NULL;
1886
1887         hostapd_logger_register_cb(hostapd_logger_cb);
1888
1889         for (;;) {
1890                 c = getopt(argc, argv, "BdhKP:tv");
1891                 if (c < 0)
1892                         break;
1893                 switch (c) {
1894                 case 'h':
1895                         usage();
1896                         break;
1897                 case 'd':
1898                         debug++;
1899                         if (wpa_debug_level > 0)
1900                                 wpa_debug_level--;
1901                         break;
1902                 case 'B':
1903                         daemonize++;
1904                         break;
1905                 case 'K':
1906                         wpa_debug_show_keys++;
1907                         break;
1908                 case 'P':
1909                         pid_file = optarg;
1910                         break;
1911                 case 't':
1912                         wpa_debug_timestamp++;
1913                         break;
1914                 case 'v':
1915                         show_version();
1916                         exit(1);
1917                         break;
1918
1919                 default:
1920                         usage();
1921                         break;
1922                 }
1923         }
1924
1925         if (optind == argc)
1926                 usage();
1927
1928         if (eap_server_register_methods()) {
1929                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
1930                 return -1;
1931         }
1932
1933         interfaces.count = argc - optind;
1934
1935         interfaces.iface = os_malloc(interfaces.count *
1936                                      sizeof(struct hostapd_iface *));
1937         if (interfaces.iface == NULL) {
1938                 wpa_printf(MSG_ERROR, "malloc failed\n");
1939                 return -1;
1940         }
1941
1942         if (eloop_init(&interfaces)) {
1943                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
1944                 return -1;
1945         }
1946
1947 #ifndef CONFIG_NATIVE_WINDOWS
1948         eloop_register_signal(SIGHUP, handle_reload, NULL);
1949         eloop_register_signal(SIGUSR1, handle_dump_state, NULL);
1950 #endif /* CONFIG_NATIVE_WINDOWS */
1951         eloop_register_signal_terminate(handle_term, NULL);
1952
1953         /* Initialize interfaces */
1954         for (i = 0; i < interfaces.count; i++) {
1955                 printf("Configuration file: %s\n", argv[optind + i]);
1956                 interfaces.iface[i] = hostapd_init(argv[optind + i]);
1957                 if (!interfaces.iface[i])
1958                         goto out;
1959                 for (k = 0; k < debug; k++) {
1960                         if (interfaces.iface[i]->bss[0]->conf->
1961                             logger_stdout_level > 0)
1962                                 interfaces.iface[i]->bss[0]->conf->
1963                                         logger_stdout_level--;
1964                 }
1965
1966                 ret = hostapd_setup_interface_start(interfaces.iface[i],
1967                                                     setup_interface_done);
1968                 if (ret)
1969                         goto out;
1970
1971                 for (k = 0; k < (int) interfaces.iface[i]->num_bss; k++) {
1972                         if (interfaces.iface[i]->bss[0]->conf->tnc)
1973                                 tnc++;
1974                 }
1975         }
1976
1977 #ifdef EAP_TNC
1978         if (tnc && tncs_global_init() < 0) {
1979                 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
1980                 goto out;
1981         }
1982 #endif /* EAP_TNC */
1983
1984         if (daemonize && os_daemonize(pid_file)) {
1985                 perror("daemon");
1986                 goto out;
1987         }
1988
1989 #ifndef CONFIG_NATIVE_WINDOWS
1990         openlog("hostapd", 0, LOG_DAEMON);
1991 #endif /* CONFIG_NATIVE_WINDOWS */
1992
1993         eloop_run();
1994
1995         /* Disconnect associated stations from all interfaces and BSSes */
1996         for (i = 0; i < interfaces.count; i++) {
1997                 for (j = 0; j < interfaces.iface[i]->num_bss; j++) {
1998                         struct hostapd_data *hapd =
1999                                 interfaces.iface[i]->bss[j];
2000                         hostapd_free_stas(hapd);
2001                         hostapd_flush_old_stations(hapd);
2002                 }
2003         }
2004
2005         ret = 0;
2006
2007  out:
2008         /* Deinitialize all interfaces */
2009         for (i = 0; i < interfaces.count; i++) {
2010                 if (!interfaces.iface[i])
2011                         continue;
2012                 hostapd_setup_interface_stop(interfaces.iface[i]);
2013                 hostapd_cleanup_iface_pre(interfaces.iface[i]);
2014                 for (j = 0; j < interfaces.iface[i]->num_bss; j++) {
2015                         struct hostapd_data *hapd =
2016                                 interfaces.iface[i]->bss[j];
2017                         hostapd_cleanup(hapd);
2018                         if (j == interfaces.iface[i]->num_bss - 1 &&
2019                             hapd->driver)
2020                                 hostapd_driver_deinit(hapd);
2021                 }
2022                 for (j = 0; j < interfaces.iface[i]->num_bss; j++)
2023                         os_free(interfaces.iface[i]->bss[j]);
2024                 hostapd_cleanup_iface(interfaces.iface[i]);
2025         }
2026         os_free(interfaces.iface);
2027
2028 #ifdef EAP_TNC
2029         tncs_global_deinit();
2030 #endif /* EAP_TNC */
2031
2032         eloop_destroy();
2033
2034 #ifndef CONFIG_NATIVE_WINDOWS
2035         closelog();
2036 #endif /* CONFIG_NATIVE_WINDOWS */
2037
2038         eap_server_unregister_methods();
2039
2040         os_daemonize_terminate(pid_file);
2041
2042         return ret;
2043 }