vcs.maemo.org Git - wpasupplicant/blob - hostapd/hostapd.c

   1 /*
   2  * hostapd / Initialization and configuration
   3  * Copyright (c) 2002-2009, 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 "beacon.h"
  24 #include "hw_features.h"
  25 #include "accounting.h"
  26 #include "eapol_sm.h"
  27 #include "iapp.h"
  28 #include "ieee802_11_defs.h"
  29 #include "ieee802_11_auth.h"
  30 #include "sta_info.h"
  31 #include "ap_list.h"
  32 #include "driver_i.h"
  33 #include "radius/radius_client.h"
  34 #include "radius/radius_server.h"
  35 #include "wpa.h"
  36 #include "preauth.h"
  37 #include "vlan_init.h"
  38 #include "ctrl_iface.h"
  39 #include "tls.h"
  40 #include "eap_server/eap_sim_db.h"
  41 #include "eap_server/eap.h"
  42 #include "eap_server/tncs.h"
  43 #include "version.h"
  44 #include "l2_packet/l2_packet.h"
  45 #include "wps_hostapd.h"
  46 #include "tkip_countermeasures.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 static int hostapd_flush_old_stations(struct hostapd_data *hapd);
  53 static int hostapd_setup_wpa(struct hostapd_data *hapd);
  54 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
  55
  56 struct hapd_interfaces {
  57         size_t count;
  58         struct hostapd_iface **iface;
  59 };
  60
  61
  62 extern int wpa_debug_level;
  63 extern int wpa_debug_show_keys;
  64 extern int wpa_debug_timestamp;
  65
  66
  67 int hostapd_for_each_interface(int (*cb)(struct hostapd_iface *iface,
  68                                          void *ctx), void *ctx)
  69 {
  70         struct hapd_interfaces *interfaces = eloop_get_user_data();
  71         size_t i;
  72         int ret;
  73
  74         for (i = 0; i < interfaces->count; i++) {
  75                 ret = cb(interfaces->iface[i], ctx);
  76                 if (ret)
  77                         return ret;
  78         }
  79
  80         return 0;
  81 }
  82
  83
  84 #ifndef CONFIG_NO_HOSTAPD_LOGGER
  85 static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
  86                               int level, const char *txt, size_t len)
  87 {
  88         struct hostapd_data *hapd = ctx;
  89         char *format, *module_str;
  90         int maxlen;
  91         int conf_syslog_level, conf_stdout_level;
  92         unsigned int conf_syslog, conf_stdout;
  93
  94         maxlen = len + 100;
  95         format = os_malloc(maxlen);
  96         if (!format)
  97                 return;
  98
  99         if (hapd && hapd->conf) {
 100                 conf_syslog_level = hapd->conf->logger_syslog_level;
 101                 conf_stdout_level = hapd->conf->logger_stdout_level;
 102                 conf_syslog = hapd->conf->logger_syslog;
 103                 conf_stdout = hapd->conf->logger_stdout;
 104         } else {
 105                 conf_syslog_level = conf_stdout_level = 0;
 106                 conf_syslog = conf_stdout = (unsigned int) -1;
 107         }
 108
 109         switch (module) {
 110         case HOSTAPD_MODULE_IEEE80211:
 111                 module_str = "IEEE 802.11";
 112                 break;
 113         case HOSTAPD_MODULE_IEEE8021X:
 114                 module_str = "IEEE 802.1X";
 115                 break;
 116         case HOSTAPD_MODULE_RADIUS:
 117                 module_str = "RADIUS";
 118                 break;
 119         case HOSTAPD_MODULE_WPA:
 120                 module_str = "WPA";
 121                 break;
 122         case HOSTAPD_MODULE_DRIVER:
 123                 module_str = "DRIVER";
 124                 break;
 125         case HOSTAPD_MODULE_IAPP:
 126                 module_str = "IAPP";
 127                 break;
 128         case HOSTAPD_MODULE_MLME:
 129                 module_str = "MLME";
 130                 break;
 131         default:
 132                 module_str = NULL;
 133                 break;
 134         }
 135
 136         if (hapd && hapd->conf && addr)
 137                 os_snprintf(format, maxlen, "%s: STA " MACSTR "%s%s: %s",
 138                             hapd->conf->iface, MAC2STR(addr),
 139                             module_str ? " " : "", module_str, txt);
 140         else if (hapd && hapd->conf)
 141                 os_snprintf(format, maxlen, "%s:%s%s %s",
 142                             hapd->conf->iface, module_str ? " " : "",
 143                             module_str, txt);
 144         else if (addr)
 145                 os_snprintf(format, maxlen, "STA " MACSTR "%s%s: %s",
 146                             MAC2STR(addr), module_str ? " " : "",
 147                             module_str, txt);
 148         else
 149                 os_snprintf(format, maxlen, "%s%s%s",
 150                             module_str, module_str ? ": " : "", txt);
 151
 152         if ((conf_stdout & module) && level >= conf_stdout_level) {
 153                 wpa_debug_print_timestamp();
 154                 printf("%s\n", format);
 155         }
 156
 157 #ifndef CONFIG_NATIVE_WINDOWS
 158         if ((conf_syslog & module) && level >= conf_syslog_level) {
 159                 int priority;
 160                 switch (level) {
 161                 case HOSTAPD_LEVEL_DEBUG_VERBOSE:
 162                 case HOSTAPD_LEVEL_DEBUG:
 163                         priority = LOG_DEBUG;
 164                         break;
 165                 case HOSTAPD_LEVEL_INFO:
 166                         priority = LOG_INFO;
 167                         break;
 168                 case HOSTAPD_LEVEL_NOTICE:
 169                         priority = LOG_NOTICE;
 170                         break;
 171                 case HOSTAPD_LEVEL_WARNING:
 172                         priority = LOG_WARNING;
 173                         break;
 174                 default:
 175                         priority = LOG_INFO;
 176                         break;
 177                 }
 178                 syslog(priority, "%s", format);
 179         }
 180 #endif /* CONFIG_NATIVE_WINDOWS */
 181
 182         os_free(format);
 183 }
 184 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
 185
 186
 187 #ifdef EAP_SERVER
 188 static int hostapd_sim_db_cb_sta(struct hostapd_data *hapd,
 189                                  struct sta_info *sta, void *ctx)
 190 {
 191         if (eapol_auth_eap_pending_cb(sta->eapol_sm, ctx) == 0)
 192                 return 1;
 193         return 0;
 194 }
 195
 196
 197 static void hostapd_sim_db_cb(void *ctx, void *session_ctx)
 198 {
 199         struct hostapd_data *hapd = ctx;
 200         if (ap_for_each_sta(hapd, hostapd_sim_db_cb_sta, session_ctx) == 0)
 201                 radius_server_eap_pending_cb(hapd->radius_srv, session_ctx);
 202 }
 203 #endif /* EAP_SERVER */
 204
 205
 206 /**
 207  * handle_term - SIGINT and SIGTERM handler to terminate hostapd process
 208  */
 209 static void handle_term(int sig, void *eloop_ctx, void *signal_ctx)
 210 {
 211         wpa_printf(MSG_DEBUG, "Signal %d received - terminating", sig);
 212         eloop_terminate();
 213 }
 214
 215
 216 static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
 217                                   struct wpa_auth_config *wconf)
 218 {
 219         wconf->wpa = conf->wpa;
 220         wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
 221         wconf->wpa_pairwise = conf->wpa_pairwise;
 222         wconf->wpa_group = conf->wpa_group;
 223         wconf->wpa_group_rekey = conf->wpa_group_rekey;
 224         wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
 225         wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
 226         wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
 227         wconf->rsn_pairwise = conf->rsn_pairwise;
 228         wconf->rsn_preauth = conf->rsn_preauth;
 229         wconf->eapol_version = conf->eapol_version;
 230         wconf->peerkey = conf->peerkey;
 231         wconf->wmm_enabled = conf->wmm_enabled;
 232         wconf->okc = conf->okc;
 233 #ifdef CONFIG_IEEE80211W
 234         wconf->ieee80211w = conf->ieee80211w;
 235 #endif /* CONFIG_IEEE80211W */
 236 #ifdef CONFIG_IEEE80211R
 237         wconf->ssid_len = conf->ssid.ssid_len;
 238         if (wconf->ssid_len > SSID_LEN)
 239                 wconf->ssid_len = SSID_LEN;
 240         os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
 241         os_memcpy(wconf->mobility_domain, conf->mobility_domain,
 242                   MOBILITY_DOMAIN_ID_LEN);
 243         if (conf->nas_identifier &&
 244             os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
 245                 wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
 246                 os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
 247                           wconf->r0_key_holder_len);
 248         }
 249         os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
 250         wconf->r0_key_lifetime = conf->r0_key_lifetime;
 251         wconf->reassociation_deadline = conf->reassociation_deadline;
 252         wconf->r0kh_list = conf->r0kh_list;
 253         wconf->r1kh_list = conf->r1kh_list;
 254         wconf->pmk_r1_push = conf->pmk_r1_push;
 255 #endif /* CONFIG_IEEE80211R */
 256 }
 257
 258
 259 int hostapd_reload_config(struct hostapd_iface *iface)
 260 {
 261         struct hostapd_data *hapd = iface->bss[0];
 262         struct hostapd_config *newconf, *oldconf;
 263         struct wpa_auth_config wpa_auth_conf;
 264
 265         newconf = hostapd_config_read(iface->config_fname);
 266         if (newconf == NULL)
 267                 return -1;
 268
 269         /*
 270          * Deauthenticate all stations since the new configuration may not
 271          * allow them to use the BSS anymore.
 272          */
 273         hostapd_flush_old_stations(hapd);
 274
 275         /* TODO: update dynamic data based on changed configuration
 276          * items (e.g., open/close sockets, etc.) */
 277         radius_client_flush(hapd->radius, 0);
 278
 279         oldconf = hapd->iconf;
 280         hapd->iconf = newconf;
 281         hapd->conf = &newconf->bss[0];
 282         iface->conf = newconf;
 283
 284         if (hostapd_setup_wpa_psk(hapd->conf)) {
 285                 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
 286                            "after reloading configuration");
 287         }
 288
 289         if (hapd->conf->wpa && hapd->wpa_auth == NULL)
 290                 hostapd_setup_wpa(hapd);
 291         else if (hapd->conf->wpa) {
 292                 hostapd_wpa_auth_conf(&newconf->bss[0], &wpa_auth_conf);
 293                 wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
 294         } else if (hapd->wpa_auth) {
 295                 wpa_deinit(hapd->wpa_auth);
 296                 hapd->wpa_auth = NULL;
 297                 hostapd_set_privacy(hapd, 0);
 298                 hostapd_setup_encryption(hapd->conf->iface, hapd);
 299         }
 300
 301         ieee802_11_set_beacon(hapd);
 302
 303         hostapd_config_free(oldconf);
 304
 305         wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
 306
 307         return 0;
 308 }
 309
 310
 311 #ifndef CONFIG_NATIVE_WINDOWS
 312 /**
 313  * handle_reload - SIGHUP handler to reload configuration
 314  */
 315 static void handle_reload(int sig, void *eloop_ctx, void *signal_ctx)
 316 {
 317         struct hapd_interfaces *hapds = (struct hapd_interfaces *) eloop_ctx;
 318         size_t i;
 319
 320         wpa_printf(MSG_DEBUG, "Signal %d received - reloading configuration",
 321                    sig);
 322
 323         for (i = 0; i < hapds->count; i++) {
 324                 if (hostapd_reload_config(hapds->iface[i]) < 0) {
 325                         wpa_printf(MSG_WARNING, "Failed to read new "
 326                                    "configuration file - continuing with "
 327                                    "old.");
 328                         continue;
 329                 }
 330         }
 331 }
 332
 333
 334 #ifdef HOSTAPD_DUMP_STATE
 335 /**
 336  * hostapd_dump_state - SIGUSR1 handler to dump hostapd state to a text file
 337  */
 338 static void hostapd_dump_state(struct hostapd_data *hapd)
 339 {
 340         FILE *f;
 341         time_t now;
 342         struct sta_info *sta;
 343         int i;
 344         char *buf;
 345
 346         if (!hapd->conf->dump_log_name) {
 347                 wpa_printf(MSG_DEBUG, "Dump file not defined - ignoring dump "
 348                            "request");
 349                 return;
 350         }
 351
 352         wpa_printf(MSG_DEBUG, "Dumping hostapd state to '%s'",
 353                    hapd->conf->dump_log_name);
 354         f = fopen(hapd->conf->dump_log_name, "w");
 355         if (f == NULL) {
 356                 wpa_printf(MSG_WARNING, "Could not open dump file '%s' for "
 357                            "writing.", hapd->conf->dump_log_name);
 358                 return;
 359         }
 360
 361         time(&now);
 362         fprintf(f, "hostapd state dump - %s", ctime(&now));
 363         fprintf(f, "num_sta=%d num_sta_non_erp=%d "
 364                 "num_sta_no_short_slot_time=%d\n"
 365                 "num_sta_no_short_preamble=%d\n",
 366                 hapd->num_sta, hapd->iface->num_sta_non_erp,
 367                 hapd->iface->num_sta_no_short_slot_time,
 368                 hapd->iface->num_sta_no_short_preamble);
 369
 370         for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
 371                 fprintf(f, "\nSTA=" MACSTR "\n", MAC2STR(sta->addr));
 372
 373                 fprintf(f,
 374                         "  AID=%d flags=0x%x %s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
 375                         "  capability=0x%x listen_interval=%d\n",
 376                         sta->aid,
 377                         sta->flags,
 378                         (sta->flags & WLAN_STA_AUTH ? "[AUTH]" : ""),
 379                         (sta->flags & WLAN_STA_ASSOC ? "[ASSOC]" : ""),
 380                         (sta->flags & WLAN_STA_PS ? "[PS]" : ""),
 381                         (sta->flags & WLAN_STA_TIM ? "[TIM]" : ""),
 382                         (sta->flags & WLAN_STA_PERM ? "[PERM]" : ""),
 383                         (sta->flags & WLAN_STA_AUTHORIZED ? "[AUTHORIZED]" :
 384                          ""),
 385                         (sta->flags & WLAN_STA_PENDING_POLL ? "[PENDING_POLL" :
 386                          ""),
 387                         (sta->flags & WLAN_STA_SHORT_PREAMBLE ?
 388                          "[SHORT_PREAMBLE]" : ""),
 389                         (sta->flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""),
 390                         (sta->flags & WLAN_STA_WMM ? "[WMM]" : ""),
 391                         (sta->flags & WLAN_STA_MFP ? "[MFP]" : ""),
 392                         (sta->flags & WLAN_STA_WPS ? "[WPS]" : ""),
 393                         (sta->flags & WLAN_STA_MAYBE_WPS ? "[MAYBE_WPS]" : ""),
 394                         (sta->flags & WLAN_STA_NONERP ? "[NonERP]" : ""),
 395                         sta->capability,
 396                         sta->listen_interval);
 397
 398                 fprintf(f, "  supported_rates=");
 399                 for (i = 0; i < sta->supported_rates_len; i++)
 400                         fprintf(f, "%02x ", sta->supported_rates[i]);
 401                 fprintf(f, "\n");
 402
 403                 fprintf(f,
 404                         "  timeout_next=%s\n",
 405                         (sta->timeout_next == STA_NULLFUNC ? "NULLFUNC POLL" :
 406                          (sta->timeout_next == STA_DISASSOC ? "DISASSOC" :
 407                           "DEAUTH")));
 408
 409                 ieee802_1x_dump_state(f, "  ", sta);
 410         }
 411
 412         buf = os_malloc(4096);
 413         if (buf) {
 414                 int count = radius_client_get_mib(hapd->radius, buf, 4096);
 415                 if (count < 0)
 416                         count = 0;
 417                 else if (count > 4095)
 418                         count = 4095;
 419                 buf[count] = '\0';
 420                 fprintf(f, "%s", buf);
 421
 422                 count = radius_server_get_mib(hapd->radius_srv, buf, 4096);
 423                 if (count < 0)
 424                         count = 0;
 425                 else if (count > 4095)
 426                         count = 4095;
 427                 buf[count] = '\0';
 428                 fprintf(f, "%s", buf);
 429                 os_free(buf);
 430         }
 431         fclose(f);
 432 }
 433 #endif /* HOSTAPD_DUMP_STATE */
 434
 435
 436 static void handle_dump_state(int sig, void *eloop_ctx, void *signal_ctx)
 437 {
 438 #ifdef HOSTAPD_DUMP_STATE
 439         struct hapd_interfaces *hapds = (struct hapd_interfaces *) eloop_ctx;
 440         size_t i, j;
 441
 442         for (i = 0; i < hapds->count; i++) {
 443                 struct hostapd_iface *hapd_iface = hapds->iface[i];
 444                 for (j = 0; j < hapd_iface->num_bss; j++)
 445                         hostapd_dump_state(hapd_iface->bss[j]);
 446         }
 447 #endif /* HOSTAPD_DUMP_STATE */
 448 }
 449 #endif /* CONFIG_NATIVE_WINDOWS */
 450
 451 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
 452                                               char *ifname)
 453 {
 454         int i;
 455
 456         for (i = 0; i < NUM_WEP_KEYS; i++) {
 457                 if (hostapd_set_encryption(ifname, hapd, "none", NULL, i, NULL,
 458                                            0, i == 0 ? 1 : 0)) {
 459                         wpa_printf(MSG_DEBUG, "Failed to clear default "
 460                                    "encryption keys (ifname=%s keyidx=%d)",
 461                                    ifname, i);
 462                 }
 463         }
 464 #ifdef CONFIG_IEEE80211W
 465         if (hapd->conf->ieee80211w) {
 466                 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
 467                         if (hostapd_set_encryption(ifname, hapd, "none", NULL,
 468                                                    i, NULL, 0,
 469                                                    i == 0 ? 1 : 0)) {
 470                                 wpa_printf(MSG_DEBUG, "Failed to clear "
 471                                            "default mgmt encryption keys "
 472                                            "(ifname=%s keyidx=%d)", ifname, i);
 473                         }
 474                 }
 475         }
 476 #endif /* CONFIG_IEEE80211W */
 477 }
 478
 479
 480 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
 481 {
 482         hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
 483         return 0;
 484 }
 485
 486
 487 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
 488 {
 489         int errors = 0, idx;
 490         struct hostapd_ssid *ssid = &hapd->conf->ssid;
 491
 492         idx = ssid->wep.idx;
 493         if (ssid->wep.default_len &&
 494             hostapd_set_encryption(hapd->conf->iface,
 495                                    hapd, "WEP", NULL, idx,
 496                                    ssid->wep.key[idx],
 497                                    ssid->wep.len[idx],
 498                                    idx == ssid->wep.idx)) {
 499                 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
 500                 errors++;
 501         }
 502
 503         if (ssid->dyn_vlan_keys) {
 504                 size_t i;
 505                 for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
 506                         const char *ifname;
 507                         struct hostapd_wep_keys *key = ssid->dyn_vlan_keys[i];
 508                         if (key == NULL)
 509                                 continue;
 510                         ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan,
 511                                                             i);
 512                         if (ifname == NULL)
 513                                 continue;
 514
 515                         idx = key->idx;
 516                         if (hostapd_set_encryption(ifname, hapd, "WEP", NULL,
 517                                                    idx, key->key[idx],
 518                                                    key->len[idx],
 519                                                    idx == key->idx)) {
 520                                 wpa_printf(MSG_WARNING, "Could not set "
 521                                            "dynamic VLAN WEP encryption.");
 522                                 errors++;
 523                         }
 524                 }
 525         }
 526
 527         return errors;
 528 }
 529
 530 /**
 531  * hostapd_cleanup - Per-BSS cleanup (deinitialization)
 532  * @hapd: Pointer to BSS data
 533  *
 534  * This function is used to free all per-BSS data structures and resources.
 535  * This gets called in a loop for each BSS between calls to
 536  * hostapd_cleanup_iface_pre() and hostapd_cleanup_iface() when an interface
 537  * is deinitialized. Most of the modules that are initialized in
 538  * hostapd_setup_bss() are deinitialized here.
 539  */
 540 static void hostapd_cleanup(struct hostapd_data *hapd)
 541 {
 542         hostapd_ctrl_iface_deinit(hapd);
 543
 544         os_free(hapd->default_wep_key);
 545         hapd->default_wep_key = NULL;
 546         iapp_deinit(hapd->iapp);
 547         hapd->iapp = NULL;
 548         accounting_deinit(hapd);
 549         rsn_preauth_iface_deinit(hapd);
 550         if (hapd->wpa_auth) {
 551                 wpa_deinit(hapd->wpa_auth);
 552                 hapd->wpa_auth = NULL;
 553
 554                 if (hostapd_set_privacy(hapd, 0)) {
 555                         wpa_printf(MSG_DEBUG, "Could not disable "
 556                                    "PrivacyInvoked for interface %s",
 557                                    hapd->conf->iface);
 558                 }
 559
 560                 if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
 561                         wpa_printf(MSG_DEBUG, "Could not remove generic "
 562                                    "information element from interface %s",
 563                                    hapd->conf->iface);
 564                 }
 565         }
 566         ieee802_1x_deinit(hapd);
 567         vlan_deinit(hapd);
 568         hostapd_acl_deinit(hapd);
 569         radius_client_deinit(hapd->radius);
 570         hapd->radius = NULL;
 571         radius_server_deinit(hapd->radius_srv);
 572         hapd->radius_srv = NULL;
 573
 574 #ifdef CONFIG_IEEE80211R
 575         l2_packet_deinit(hapd->l2);
 576 #endif /* CONFIG_IEEE80211R */
 577
 578         hostapd_deinit_wps(hapd);
 579
 580         hostapd_wireless_event_deinit(hapd);
 581
 582 #ifdef EAP_TLS_FUNCS
 583         if (hapd->ssl_ctx) {
 584                 tls_deinit(hapd->ssl_ctx);
 585                 hapd->ssl_ctx = NULL;
 586         }
 587 #endif /* EAP_TLS_FUNCS */
 588
 589 #ifdef EAP_SERVER
 590         if (hapd->eap_sim_db_priv) {
 591                 eap_sim_db_deinit(hapd->eap_sim_db_priv);
 592                 hapd->eap_sim_db_priv = NULL;
 593         }
 594 #endif /* EAP_SERVER */
 595
 596         if (hapd->interface_added &&
 597             hostapd_bss_remove(hapd, hapd->conf->iface)) {
 598                 wpa_printf(MSG_WARNING, "Failed to remove BSS interface %s",
 599                            hapd->conf->iface);
 600         }
 601 }
 602
 603
 604 /**
 605  * hostapd_cleanup_iface_pre - Preliminary per-interface cleanup
 606  * @iface: Pointer to interface data
 607  *
 608  * This function is called before per-BSS data structures are deinitialized
 609  * with hostapd_cleanup().
 610  */
 611 static void hostapd_cleanup_iface_pre(struct hostapd_iface *iface)
 612 {
 613 }
 614
 615
 616 /**
 617  * hostapd_cleanup_iface - Complete per-interface cleanup
 618  * @iface: Pointer to interface data
 619  *
 620  * This function is called after per-BSS data structures are deinitialized
 621  * with hostapd_cleanup().
 622  */
 623 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
 624 {
 625         hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
 626         iface->hw_features = NULL;
 627         os_free(iface->current_rates);
 628         iface->current_rates = NULL;
 629         ap_list_deinit(iface);
 630         hostapd_config_free(iface->conf);
 631         iface->conf = NULL;
 632
 633         os_free(iface->config_fname);
 634         os_free(iface->bss);
 635         os_free(iface);
 636 }
 637
 638
 639 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
 640 {
 641         int i;
 642
 643         hostapd_broadcast_wep_set(hapd);
 644
 645         if (hapd->conf->ssid.wep.default_len)
 646                 return 0;
 647
 648         for (i = 0; i < 4; i++) {
 649                 if (hapd->conf->ssid.wep.key[i] &&
 650                     hostapd_set_encryption(iface, hapd, "WEP", NULL,
 651                                            i, hapd->conf->ssid.wep.key[i],
 652                                            hapd->conf->ssid.wep.len[i],
 653                                            i == hapd->conf->ssid.wep.idx)) {
 654                         wpa_printf(MSG_WARNING, "Could not set WEP "
 655                                    "encryption.");
 656                         return -1;
 657                 }
 658                 if (hapd->conf->ssid.wep.key[i] &&
 659                     i == hapd->conf->ssid.wep.idx)
 660                         hostapd_set_privacy(hapd, 1);
 661         }
 662
 663         return 0;
 664 }
 665
 666
 667 static int hostapd_flush_old_stations(struct hostapd_data *hapd)
 668 {
 669         int ret = 0;
 670
 671         if (hostapd_drv_none(hapd))
 672                 return 0;
 673
 674         wpa_printf(MSG_DEBUG, "Flushing old station entries");
 675         if (hostapd_flush(hapd)) {
 676                 wpa_printf(MSG_WARNING, "Could not connect to kernel driver.");
 677                 ret = -1;
 678         }
 679         wpa_printf(MSG_DEBUG, "Deauthenticate all stations");
 680
 681         /* New Prism2.5/3 STA firmware versions seem to have issues with this
 682          * broadcast deauth frame. This gets the firmware in odd state where
 683          * nothing works correctly, so let's skip sending this for the hostap
 684          * driver. */
 685         if (hapd->driver && os_strcmp(hapd->driver->name, "hostap") != 0) {
 686                 u8 addr[ETH_ALEN];
 687                 os_memset(addr, 0xff, ETH_ALEN);
 688                 hostapd_sta_deauth(hapd, addr,
 689                                    WLAN_REASON_PREV_AUTH_NOT_VALID);
 690         }
 691
 692         return ret;
 693 }
 694
 695
 696 static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
 697                                     logger_level level, const char *txt)
 698 {
 699 #ifndef CONFIG_NO_HOSTAPD_LOGGER
 700         struct hostapd_data *hapd = ctx;
 701         int hlevel;
 702
 703         switch (level) {
 704         case LOGGER_WARNING:
 705                 hlevel = HOSTAPD_LEVEL_WARNING;
 706                 break;
 707         case LOGGER_INFO:
 708                 hlevel = HOSTAPD_LEVEL_INFO;
 709                 break;
 710         case LOGGER_DEBUG:
 711         default:
 712                 hlevel = HOSTAPD_LEVEL_DEBUG;
 713                 break;
 714         }
 715
 716         hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
 717 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
 718 }
 719
 720
 721 static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
 722                                         u16 reason)
 723 {
 724         struct hostapd_data *hapd = ctx;
 725         struct sta_info *sta;
 726
 727         wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
 728                    "STA " MACSTR " reason %d",
 729                    __func__, MAC2STR(addr), reason);
 730
 731         sta = ap_get_sta(hapd, addr);
 732         hostapd_sta_deauth(hapd, addr, reason);
 733         if (sta == NULL)
 734                 return;
 735         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_AUTHORIZED);
 736         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 737         eloop_register_timeout(0, 0, ap_handle_timer, hapd, sta);
 738         sta->timeout_next = STA_REMOVE;
 739 }
 740
 741
 742 static void hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
 743 {
 744         struct hostapd_data *hapd = ctx;
 745         michael_mic_failure(hapd, addr, 0);
 746 }
 747
 748
 749 static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
 750                                        wpa_eapol_variable var, int value)
 751 {
 752         struct hostapd_data *hapd = ctx;
 753         struct sta_info *sta = ap_get_sta(hapd, addr);
 754         if (sta == NULL)
 755                 return;
 756         switch (var) {
 757         case WPA_EAPOL_portEnabled:
 758                 ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
 759                 break;
 760         case WPA_EAPOL_portValid:
 761                 ieee802_1x_notify_port_valid(sta->eapol_sm, value);
 762                 break;
 763         case WPA_EAPOL_authorized:
 764                 ieee802_1x_set_sta_authorized(hapd, sta, value);
 765                 break;
 766         case WPA_EAPOL_portControl_Auto:
 767                 if (sta->eapol_sm)
 768                         sta->eapol_sm->portControl = Auto;
 769                 break;
 770         case WPA_EAPOL_keyRun:
 771                 if (sta->eapol_sm)
 772                         sta->eapol_sm->keyRun = value ? TRUE : FALSE;
 773                 break;
 774         case WPA_EAPOL_keyAvailable:
 775                 if (sta->eapol_sm)
 776                         sta->eapol_sm->eap_if->eapKeyAvailable =
 777                                 value ? TRUE : FALSE;
 778                 break;
 779         case WPA_EAPOL_keyDone:
 780                 if (sta->eapol_sm)
 781                         sta->eapol_sm->keyDone = value ? TRUE : FALSE;
 782                 break;
 783         case WPA_EAPOL_inc_EapolFramesTx:
 784                 if (sta->eapol_sm)
 785                         sta->eapol_sm->dot1xAuthEapolFramesTx++;
 786                 break;
 787         }
 788 }
 789
 790
 791 static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
 792                                       wpa_eapol_variable var)
 793 {
 794         struct hostapd_data *hapd = ctx;
 795         struct sta_info *sta = ap_get_sta(hapd, addr);
 796         if (sta == NULL || sta->eapol_sm == NULL)
 797                 return -1;
 798         switch (var) {
 799         case WPA_EAPOL_keyRun:
 800                 return sta->eapol_sm->keyRun;
 801         case WPA_EAPOL_keyAvailable:
 802                 return sta->eapol_sm->eap_if->eapKeyAvailable;
 803         default:
 804                 return -1;
 805         }
 806 }
 807
 808
 809 static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
 810                                            const u8 *prev_psk)
 811 {
 812         struct hostapd_data *hapd = ctx;
 813         return hostapd_get_psk(hapd->conf, addr, prev_psk);
 814 }
 815
 816
 817 static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
 818                                     size_t *len)
 819 {
 820         struct hostapd_data *hapd = ctx;
 821         const u8 *key;
 822         size_t keylen;
 823         struct sta_info *sta;
 824
 825         sta = ap_get_sta(hapd, addr);
 826         if (sta == NULL)
 827                 return -1;
 828
 829         key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
 830         if (key == NULL)
 831                 return -1;
 832
 833         if (keylen > *len)
 834                 keylen = *len;
 835         os_memcpy(msk, key, keylen);
 836         *len = keylen;
 837
 838         return 0;
 839 }
 840
 841
 842 static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, const char *alg,
 843                                     const u8 *addr, int idx, u8 *key,
 844                                     size_t key_len)
 845 {
 846         struct hostapd_data *hapd = ctx;
 847         const char *ifname = hapd->conf->iface;
 848
 849         if (vlan_id > 0) {
 850                 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
 851                 if (ifname == NULL)
 852                         return -1;
 853         }
 854
 855         return hostapd_set_encryption(ifname, hapd, alg, addr, idx,
 856                                       key, key_len, 1);
 857 }
 858
 859
 860 static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
 861                                        u8 *seq)
 862 {
 863         struct hostapd_data *hapd = ctx;
 864         return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
 865 }
 866
 867
 868 static int hostapd_wpa_auth_get_seqnum_igtk(void *ctx, const u8 *addr, int idx,
 869                                             u8 *seq)
 870 {
 871         struct hostapd_data *hapd = ctx;
 872         return hostapd_get_seqnum_igtk(hapd->conf->iface, hapd, addr, idx,
 873                                        seq);
 874 }
 875
 876
 877 static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
 878                                        const u8 *data, size_t data_len,
 879                                        int encrypt)
 880 {
 881         struct hostapd_data *hapd = ctx;
 882         return hostapd_send_eapol(hapd, addr, data, data_len, encrypt);
 883 }
 884
 885
 886 static int hostapd_wpa_auth_for_each_sta(
 887         void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
 888         void *cb_ctx)
 889 {
 890         struct hostapd_data *hapd = ctx;
 891         struct sta_info *sta;
 892
 893         for (sta = hapd->sta_list; sta; sta = sta->next) {
 894                 if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
 895                         return 1;
 896         }
 897         return 0;
 898 }
 899
 900
 901 static int hostapd_wpa_auth_for_each_auth(
 902         void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
 903         void *cb_ctx)
 904 {
 905         struct hostapd_data *ohapd;
 906         size_t i, j;
 907         struct hapd_interfaces *interfaces = eloop_get_user_data();
 908
 909         for (i = 0; i < interfaces->count; i++) {
 910                 for (j = 0; j < interfaces->iface[i]->num_bss; j++) {
 911                         ohapd = interfaces->iface[i]->bss[j];
 912                         if (cb(ohapd->wpa_auth, cb_ctx))
 913                                 return 1;
 914                 }
 915         }
 916
 917         return 0;
 918 }
 919
 920
 921 static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
 922                                        const u8 *data, size_t data_len)
 923 {
 924         struct hostapd_data *hapd = ctx;
 925
 926         if (hapd->driver && hapd->driver->send_ether)
 927                 return hapd->driver->send_ether(hapd->drv_priv, dst,
 928                                                 hapd->own_addr, proto,
 929                                                 data, data_len);
 930         if (hapd->l2 == NULL)
 931                 return -1;
 932         return l2_packet_send(hapd->l2, dst, proto, data, data_len);
 933 }
 934
 935
 936 #ifdef CONFIG_IEEE80211R
 937
 938 static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
 939                                            const u8 *data, size_t data_len)
 940 {
 941         struct hostapd_data *hapd = ctx;
 942         int res;
 943         struct ieee80211_mgmt *m;
 944         size_t mlen;
 945         struct sta_info *sta;
 946
 947         sta = ap_get_sta(hapd, dst);
 948         if (sta == NULL || sta->wpa_sm == NULL)
 949                 return -1;
 950
 951         m = os_zalloc(sizeof(*m) + data_len);
 952         if (m == NULL)
 953                 return -1;
 954         mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
 955         m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 956                                         WLAN_FC_STYPE_ACTION);
 957         os_memcpy(m->da, dst, ETH_ALEN);
 958         os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
 959         os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
 960         os_memcpy(&m->u, data, data_len);
 961
 962         res = hostapd_send_mgmt_frame(hapd, (u8 *) m, mlen, 0);
 963         os_free(m);
 964         return res;
 965 }
 966
 967
 968 static struct wpa_state_machine *
 969 hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
 970 {
 971         struct hostapd_data *hapd = ctx;
 972         struct sta_info *sta;
 973
 974         sta = ap_sta_add(hapd, sta_addr);
 975         if (sta == NULL)
 976                 return NULL;
 977         if (sta->wpa_sm)
 978                 return sta->wpa_sm;
 979
 980         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
 981         if (sta->wpa_sm == NULL) {
 982                 ap_free_sta(hapd, sta);
 983                 return NULL;
 984         }
 985         sta->auth_alg = WLAN_AUTH_FT;
 986
 987         return sta->wpa_sm;
 988 }
 989
 990
 991 static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
 992                                 size_t len)
 993 {
 994         struct hostapd_data *hapd = ctx;
 995         wpa_ft_rrb_rx(hapd->wpa_auth, src_addr, buf, len);
 996 }
 997
 998 #endif /* CONFIG_IEEE80211R */
 999
1000
1001 /**
1002  * hostapd_validate_bssid_configuration - Validate BSSID configuration
1003  * @iface: Pointer to interface data
1004  * Returns: 0 on success, -1 on failure
1005  *
1006  * This function is used to validate that the configured BSSIDs are valid.
1007  */
1008 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
1009 {
1010         u8 mask[ETH_ALEN] = { 0 };
1011         struct hostapd_data *hapd = iface->bss[0];
1012         unsigned int i = iface->conf->num_bss, bits = 0, j;
1013         int res;
1014         int auto_addr = 0;
1015
1016         if (hostapd_drv_none(hapd))
1017                 return 0;
1018
1019         /* Generate BSSID mask that is large enough to cover the BSSIDs. */
1020
1021         /* Determine the bits necessary to cover the number of BSSIDs. */
1022         for (i--; i; i >>= 1)
1023                 bits++;
1024
1025         /* Determine the bits necessary to any configured BSSIDs,
1026            if they are higher than the number of BSSIDs. */
1027         for (j = 0; j < iface->conf->num_bss; j++) {
1028                 if (hostapd_mac_comp_empty(iface->conf->bss[j].bssid) == 0) {
1029                         if (j)
1030                                 auto_addr++;
1031                         continue;
1032                 }
1033
1034                 for (i = 0; i < ETH_ALEN; i++) {
1035                         mask[i] |=
1036                                 iface->conf->bss[j].bssid[i] ^
1037                                 hapd->own_addr[i];
1038                 }
1039         }
1040
1041         if (!auto_addr)
1042                 goto skip_mask_ext;
1043
1044         for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
1045                 ;
1046         j = 0;
1047         if (i < ETH_ALEN) {
1048                 j = (5 - i) * 8;
1049
1050                 while (mask[i] != 0) {
1051                         mask[i] >>= 1;
1052                         j++;
1053                 }
1054         }
1055
1056         if (bits < j)
1057                 bits = j;
1058
1059         if (bits > 40) {
1060                 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
1061                            bits);
1062                 return -1;
1063         }
1064
1065         os_memset(mask, 0xff, ETH_ALEN);
1066         j = bits / 8;
1067         for (i = 5; i > 5 - j; i--)
1068                 mask[i] = 0;
1069         j = bits % 8;
1070         while (j--)
1071                 mask[i] <<= 1;
1072
1073 skip_mask_ext:
1074         wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
1075                    (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
1076
1077         res = hostapd_valid_bss_mask(hapd, hapd->own_addr, mask);
1078         if (res == 0)
1079                 return 0;
1080
1081         if (res < 0) {
1082                 wpa_printf(MSG_ERROR, "Driver did not accept BSSID mask "
1083                            MACSTR " for start address " MACSTR ".",
1084                            MAC2STR(mask), MAC2STR(hapd->own_addr));
1085                 return -1;
1086         }
1087
1088         if (!auto_addr)
1089                 return 0;
1090
1091         for (i = 0; i < ETH_ALEN; i++) {
1092                 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
1093                         wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
1094                                    " for start address " MACSTR ".",
1095                                    MAC2STR(mask), MAC2STR(hapd->own_addr));
1096                         wpa_printf(MSG_ERROR, "Start address must be the "
1097                                    "first address in the block (i.e., addr "
1098                                    "AND mask == addr).");
1099                         return -1;
1100                 }
1101         }
1102
1103         return 0;
1104 }
1105
1106
1107 static int mac_in_conf(struct hostapd_config *conf, const void *a)
1108 {
1109         size_t i;
1110
1111         for (i = 0; i < conf->num_bss; i++) {
1112                 if (hostapd_mac_comp(conf->bss[i].bssid, a) == 0) {
1113                         return 1;
1114                 }
1115         }
1116
1117         return 0;
1118 }
1119
1120
1121 static int hostapd_setup_wpa(struct hostapd_data *hapd)
1122 {
1123         struct wpa_auth_config _conf;
1124         struct wpa_auth_callbacks cb;
1125         const u8 *wpa_ie;
1126         size_t wpa_ie_len;
1127
1128         hostapd_wpa_auth_conf(hapd->conf, &_conf);
1129         os_memset(&cb, 0, sizeof(cb));
1130         cb.ctx = hapd;
1131         cb.logger = hostapd_wpa_auth_logger;
1132         cb.disconnect = hostapd_wpa_auth_disconnect;
1133         cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
1134         cb.set_eapol = hostapd_wpa_auth_set_eapol;
1135         cb.get_eapol = hostapd_wpa_auth_get_eapol;
1136         cb.get_psk = hostapd_wpa_auth_get_psk;
1137         cb.get_msk = hostapd_wpa_auth_get_msk;
1138         cb.set_key = hostapd_wpa_auth_set_key;
1139         cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
1140         cb.get_seqnum_igtk = hostapd_wpa_auth_get_seqnum_igtk;
1141         cb.send_eapol = hostapd_wpa_auth_send_eapol;
1142         cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
1143         cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
1144         cb.send_ether = hostapd_wpa_auth_send_ether;
1145 #ifdef CONFIG_IEEE80211R
1146         cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
1147         cb.add_sta = hostapd_wpa_auth_add_sta;
1148 #endif /* CONFIG_IEEE80211R */
1149         hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
1150         if (hapd->wpa_auth == NULL) {
1151                 wpa_printf(MSG_ERROR, "WPA initialization failed.");
1152                 return -1;
1153         }
1154
1155         if (hostapd_set_privacy(hapd, 1)) {
1156                 wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
1157                            "for interface %s", hapd->conf->iface);
1158                 return -1;
1159         }
1160
1161         wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
1162         if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
1163                 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
1164                            "the kernel driver.");
1165                 return -1;
1166         }
1167
1168         if (rsn_preauth_iface_init(hapd)) {
1169                 wpa_printf(MSG_ERROR, "Initialization of RSN "
1170                            "pre-authentication failed.");
1171                 return -1;
1172         }
1173
1174         return 0;
1175
1176 }
1177
1178
1179 static int hostapd_setup_radius_srv(struct hostapd_data *hapd,
1180                                     struct hostapd_bss_config *conf)
1181 {
1182         struct radius_server_conf srv;
1183         os_memset(&srv, 0, sizeof(srv));
1184         srv.client_file = conf->radius_server_clients;
1185         srv.auth_port = conf->radius_server_auth_port;
1186         srv.conf_ctx = conf;
1187         srv.eap_sim_db_priv = hapd->eap_sim_db_priv;
1188         srv.ssl_ctx = hapd->ssl_ctx;
1189         srv.pac_opaque_encr_key = conf->pac_opaque_encr_key;
1190         srv.eap_fast_a_id = conf->eap_fast_a_id;
1191         srv.eap_fast_a_id_len = conf->eap_fast_a_id_len;
1192         srv.eap_fast_a_id_info = conf->eap_fast_a_id_info;
1193         srv.eap_fast_prov = conf->eap_fast_prov;
1194         srv.pac_key_lifetime = conf->pac_key_lifetime;
1195         srv.pac_key_refresh_time = conf->pac_key_refresh_time;
1196         srv.eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
1197         srv.tnc = conf->tnc;
1198         srv.wps = hapd->wps;
1199         srv.ipv6 = conf->radius_server_ipv6;
1200         srv.get_eap_user = hostapd_radius_get_eap_user;
1201         srv.eap_req_id_text = conf->eap_req_id_text;
1202         srv.eap_req_id_text_len = conf->eap_req_id_text_len;
1203
1204         hapd->radius_srv = radius_server_init(&srv);
1205         if (hapd->radius_srv == NULL) {
1206                 wpa_printf(MSG_ERROR, "RADIUS server initialization failed.");
1207                 return -1;
1208         }
1209
1210         return 0;
1211 }
1212
1213
1214 /**
1215  * hostapd_setup_bss - Per-BSS setup (initialization)
1216  * @hapd: Pointer to BSS data
1217  * @first: Whether this BSS is the first BSS of an interface
1218  *
1219  * This function is used to initialize all per-BSS data structures and
1220  * resources. This gets called in a loop for each BSS when an interface is
1221  * initialized. Most of the modules that are initialized here will be
1222  * deinitialized in hostapd_cleanup().
1223  */
1224 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
1225 {
1226         struct hostapd_bss_config *conf = hapd->conf;
1227         u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
1228         int ssid_len, set_ssid;
1229
1230         if (!first) {
1231                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) {
1232                         /* Allocate the next available BSSID. */
1233                         do {
1234                                 inc_byte_array(hapd->own_addr, ETH_ALEN);
1235                         } while (mac_in_conf(hapd->iconf, hapd->own_addr));
1236                 } else {
1237                         /* Allocate the configured BSSID. */
1238                         os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
1239
1240                         if (hostapd_mac_comp(hapd->own_addr,
1241                                              hapd->iface->bss[0]->own_addr) ==
1242                             0) {
1243                                 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
1244                                            "BSSID set to the MAC address of "
1245                                            "the radio", hapd->conf->iface);
1246                                 return -1;
1247                         }
1248                 }
1249
1250                 hapd->interface_added = 1;
1251                 if (hostapd_bss_add(hapd->iface->bss[0], hapd->conf->iface,
1252                                     hapd->own_addr)) {
1253                         wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
1254                                    MACSTR ")", MAC2STR(hapd->own_addr));
1255                         return -1;
1256                 }
1257         }
1258
1259         /*
1260          * Fetch the SSID from the system and use it or,
1261          * if one was specified in the config file, verify they
1262          * match.
1263          */
1264         ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
1265         if (ssid_len < 0) {
1266                 wpa_printf(MSG_ERROR, "Could not read SSID from system");
1267                 return -1;
1268         }
1269         if (conf->ssid.ssid_set) {
1270                 /*
1271                  * If SSID is specified in the config file and it differs
1272                  * from what is being used then force installation of the
1273                  * new SSID.
1274                  */
1275                 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
1276                             os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
1277         } else {
1278                 /*
1279                  * No SSID in the config file; just use the one we got
1280                  * from the system.
1281                  */
1282                 set_ssid = 0;
1283                 conf->ssid.ssid_len = ssid_len;
1284                 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
1285                 conf->ssid.ssid[conf->ssid.ssid_len] = '\0';
1286         }
1287
1288         if (!hostapd_drv_none(hapd)) {
1289                 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
1290                            " and ssid '%s'",
1291                            hapd->conf->iface, MAC2STR(hapd->own_addr),
1292                            hapd->conf->ssid.ssid);
1293         }
1294
1295         if (hostapd_setup_wpa_psk(conf)) {
1296                 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
1297                 return -1;
1298         }
1299
1300         /* Set flag for whether SSID is broadcast in beacons */
1301         if (hostapd_set_broadcast_ssid(hapd,
1302                                        !!hapd->conf->ignore_broadcast_ssid)) {
1303                 wpa_printf(MSG_ERROR, "Could not set broadcast SSID flag for "
1304                            "kernel driver");
1305                 return -1;
1306         }
1307
1308         /* Set SSID for the kernel driver (to be used in beacon and probe
1309          * response frames) */
1310         if (set_ssid && hostapd_set_ssid(hapd, (u8 *) conf->ssid.ssid,
1311                                          conf->ssid.ssid_len)) {
1312                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
1313                 return -1;
1314         }
1315
1316         if (wpa_debug_level == MSG_MSGDUMP)
1317                 conf->radius->msg_dumps = 1;
1318         hapd->radius = radius_client_init(hapd, conf->radius);
1319         if (hapd->radius == NULL) {
1320                 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
1321                 return -1;
1322         }
1323
1324         if (hostapd_acl_init(hapd)) {
1325                 wpa_printf(MSG_ERROR, "ACL initialization failed.");
1326                 return -1;
1327         }
1328         if (hostapd_init_wps(hapd, conf))
1329                 return -1;
1330
1331         if (ieee802_1x_init(hapd)) {
1332                 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
1333                 return -1;
1334         }
1335
1336         if (hapd->conf->wpa && hostapd_setup_wpa(hapd))
1337                 return -1;
1338
1339         if (accounting_init(hapd)) {
1340                 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
1341                 return -1;
1342         }
1343
1344         if (hapd->conf->ieee802_11f &&
1345             (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) {
1346                 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
1347                            "failed.");
1348                 return -1;
1349         }
1350
1351         if (hostapd_ctrl_iface_init(hapd)) {
1352                 wpa_printf(MSG_ERROR, "Failed to setup control interface");
1353                 return -1;
1354         }
1355
1356         if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
1357                 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
1358                 return -1;
1359         }
1360
1361 #ifdef CONFIG_IEEE80211R
1362         if (!hostapd_drv_none(hapd)) {
1363                 hapd->l2 = l2_packet_init(hapd->conf->iface, NULL, ETH_P_RRB,
1364                                           hostapd_rrb_receive, hapd, 0);
1365                 if (hapd->l2 == NULL &&
1366                     (hapd->driver == NULL ||
1367                      hapd->driver->send_ether == NULL)) {
1368                         wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1369                                    "interface");
1370                         return -1;
1371                 }
1372         }
1373 #endif /* CONFIG_IEEE80211R */
1374
1375         ieee802_11_set_beacon(hapd);
1376
1377         if (conf->radius_server_clients &&
1378             hostapd_setup_radius_srv(hapd, conf))
1379                 return -1;
1380
1381         return 0;
1382 }
1383
1384
1385 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
1386 {
1387         struct hostapd_data *hapd = iface->bss[0];
1388         int i;
1389         struct hostapd_tx_queue_params *p;
1390
1391         for (i = 0; i < NUM_TX_QUEUES; i++) {
1392                 p = &iface->conf->tx_queue[i];
1393
1394                 if (!p->configured)
1395                         continue;
1396
1397                 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
1398                                                 p->cwmax, p->burst)) {
1399                         wpa_printf(MSG_DEBUG, "Failed to set TX queue "
1400                                    "parameters for queue %d.", i);
1401                         /* Continue anyway */
1402                 }
1403         }
1404 }
1405
1406
1407 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
1408                                        size_t identity_len, int phase2,
1409                                        struct eap_user *user)
1410 {
1411         const struct hostapd_eap_user *eap_user;
1412         int i, count;
1413
1414         eap_user = hostapd_get_eap_user(ctx, identity, identity_len, phase2);
1415         if (eap_user == NULL)
1416                 return -1;
1417
1418         if (user == NULL)
1419                 return 0;
1420
1421         os_memset(user, 0, sizeof(*user));
1422         count = EAP_USER_MAX_METHODS;
1423         if (count > EAP_MAX_METHODS)
1424                 count = EAP_MAX_METHODS;
1425         for (i = 0; i < count; i++) {
1426                 user->methods[i].vendor = eap_user->methods[i].vendor;
1427                 user->methods[i].method = eap_user->methods[i].method;
1428         }
1429
1430         if (eap_user->password) {
1431                 user->password = os_malloc(eap_user->password_len);
1432                 if (user->password == NULL)
1433                         return -1;
1434                 os_memcpy(user->password, eap_user->password,
1435                           eap_user->password_len);
1436                 user->password_len = eap_user->password_len;
1437                 user->password_hash = eap_user->password_hash;
1438         }
1439         user->force_version = eap_user->force_version;
1440         user->ttls_auth = eap_user->ttls_auth;
1441
1442         return 0;
1443 }
1444
1445
1446 static int setup_interface(struct hostapd_iface *iface)
1447 {
1448         struct hostapd_data *hapd = iface->bss[0];
1449         struct hostapd_bss_config *conf = hapd->conf;
1450         size_t i;
1451         char country[4];
1452         u8 *b = conf->bssid;
1453         int freq;
1454         size_t j;
1455         int ret = 0;
1456         u8 *prev_addr;
1457
1458         /*
1459          * Initialize the driver interface and make sure that all BSSes get
1460          * configured with a pointer to this driver interface.
1461          */
1462         if (b[0] | b[1] | b[2] | b[3] | b[4] | b[5]) {
1463                 hapd->drv_priv = hostapd_driver_init_bssid(hapd, b);
1464         } else {
1465                 hapd->drv_priv = hostapd_driver_init(hapd);
1466         }
1467
1468         if (hapd->drv_priv == NULL) {
1469                 wpa_printf(MSG_ERROR, "%s driver initialization failed.",
1470                            hapd->driver ? hapd->driver->name : "Unknown");
1471                 hapd->driver = NULL;
1472                 return -1;
1473         }
1474         for (i = 0; i < iface->num_bss; i++) {
1475                 iface->bss[i]->driver = hapd->driver;
1476                 iface->bss[i]->drv_priv = hapd->drv_priv;
1477         }
1478
1479         if (hostapd_validate_bssid_configuration(iface))
1480                 return -1;
1481
1482 #ifdef CONFIG_IEEE80211N
1483         SET_2BIT_LE16(&iface->ht_op_mode,
1484                       HT_INFO_OPERATION_MODE_OP_MODE_OFFSET,
1485                       OP_MODE_PURE);
1486 #endif /* CONFIG_IEEE80211N */
1487
1488         if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1489                 os_memcpy(country, hapd->iconf->country, 3);
1490                 country[3] = '\0';
1491                 if (hostapd_set_country(hapd, country) < 0) {
1492                         wpa_printf(MSG_ERROR, "Failed to set country code");
1493                         return -1;
1494                 }
1495         }
1496
1497         if (hapd->iconf->ieee80211d &&
1498             hostapd_set_ieee80211d(hapd, 1) < 0) {
1499                 wpa_printf(MSG_ERROR, "Failed to set ieee80211d (%d)",
1500                            hapd->iconf->ieee80211d);
1501                 return -1;
1502         }
1503
1504         if (hapd->iconf->bridge_packets != INTERNAL_BRIDGE_DO_NOT_CONTROL &&
1505             hostapd_set_internal_bridge(hapd, hapd->iconf->bridge_packets)) {
1506                 wpa_printf(MSG_ERROR, "Failed to set bridge_packets for "
1507                            "kernel driver");
1508                 return -1;
1509         }
1510
1511         /* TODO: merge with hostapd_driver_init() ? */
1512         if (hostapd_wireless_event_init(hapd) < 0)
1513                 return -1;
1514
1515         if (hostapd_get_hw_features(iface)) {
1516                 /* Not all drivers support this yet, so continue without hw
1517                  * feature data. */
1518         } else {
1519                 int ret = hostapd_select_hw_mode(iface);
1520                 if (ret < 0) {
1521                         wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1522                                    "channel. (%d)", ret);
1523                         return -1;
1524                 }
1525         }
1526
1527         hostapd_flush_old_stations(hapd);
1528         hostapd_set_privacy(hapd, 0);
1529
1530         if (hapd->iconf->channel) {
1531                 freq = hostapd_hw_get_freq(hapd, hapd->iconf->channel);
1532                 wpa_printf(MSG_DEBUG, "Mode: %s  Channel: %d  "
1533                            "Frequency: %d MHz",
1534                            hostapd_hw_mode_txt(hapd->iconf->hw_mode),
1535                            hapd->iconf->channel, freq);
1536
1537                 if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, freq,
1538                                      hapd->iconf->ieee80211n,
1539                                      hapd->iconf->secondary_channel)) {
1540                         wpa_printf(MSG_ERROR, "Could not set channel for "
1541                                    "kernel driver");
1542                         return -1;
1543                 }
1544         }
1545
1546         hostapd_broadcast_wep_clear(hapd);
1547         if (hostapd_setup_encryption(hapd->conf->iface, hapd))
1548                 return -1;
1549
1550         hostapd_set_beacon_int(hapd, hapd->iconf->beacon_int);
1551         ieee802_11_set_beacon(hapd);
1552
1553         if (hapd->iconf->rts_threshold > -1 &&
1554             hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1555                 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1556                            "kernel driver");
1557                 return -1;
1558         }
1559
1560         if (hapd->iconf->fragm_threshold > -1 &&
1561             hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1562                 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1563                            "for kernel driver");
1564                 return -1;
1565         }
1566
1567         prev_addr = hapd->own_addr;
1568
1569         for (j = 0; j < iface->num_bss; j++) {
1570                 hapd = iface->bss[j];
1571                 if (j)
1572                         os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1573                 if (hostapd_setup_bss(hapd, j == 0))
1574                         return -1;
1575                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1576                         prev_addr = hapd->own_addr;
1577         }
1578
1579         hostapd_tx_queue_params(iface);
1580
1581         ap_list_init(iface);
1582
1583         if (hostapd_driver_commit(hapd) < 0) {
1584                 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1585                            "configuration", __func__);
1586                 return -1;
1587         }
1588
1589         return ret;
1590 }
1591
1592
1593 /**
1594  * hostapd_setup_interface - Setup of an interface
1595  * @iface: Pointer to interface data.
1596  * Returns: 0 on success, -1 on failure
1597  *
1598  * Initializes the driver interface, validates the configuration,
1599  * and sets driver parameters based on the configuration.
1600  * Flushes old stations, sets the channel, encryption,
1601  * beacons, and WDS links based on the configuration.
1602  */
1603 static int hostapd_setup_interface(struct hostapd_iface *iface)
1604 {
1605         int ret;
1606
1607         ret = setup_interface(iface);
1608         if (ret) {
1609                 wpa_printf(MSG_DEBUG, "%s: Unable to setup interface.",
1610                            iface->bss[0]->conf->iface);
1611                 eloop_terminate();
1612                 return -1;
1613         } else if (!hostapd_drv_none(iface->bss[0])) {
1614                 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1615                            iface->bss[0]->conf->iface);
1616         }
1617
1618         return 0;
1619 }
1620
1621
1622 static void show_version(void)
1623 {
1624         fprintf(stderr,
1625                 "hostapd v" VERSION_STR "\n"
1626                 "User space daemon for IEEE 802.11 AP management,\n"
1627                 "IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n"
1628                 "Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi> "
1629                 "and contributors\n");
1630 }
1631
1632
1633 static void usage(void)
1634 {
1635         show_version();
1636         fprintf(stderr,
1637                 "\n"
1638                 "usage: hostapd [-hdBKtv] [-P <PID file>] "
1639                 "<configuration file(s)>\n"
1640                 "\n"
1641                 "options:\n"
1642                 "   -h   show this usage\n"
1643                 "   -d   show more debug messages (-dd for even more)\n"
1644                 "   -B   run daemon in the background\n"
1645                 "   -P   PID file\n"
1646                 "   -K   include key data in debug messages\n"
1647                 "   -t   include timestamps in some debug messages\n"
1648                 "   -v   show hostapd version\n");
1649
1650         exit(1);
1651 }
1652
1653
1654 /**
1655  * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1656  * @hapd_iface: Pointer to interface data
1657  * @conf: Pointer to per-interface configuration
1658  * @bss: Pointer to per-BSS configuration for this BSS
1659  * Returns: Pointer to allocated BSS data
1660  *
1661  * This function is used to allocate per-BSS data structure. This data will be
1662  * freed after hostapd_cleanup() is called for it during interface
1663  * deinitialization.
1664  */
1665 static struct hostapd_data *
1666 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1667                        struct hostapd_config *conf,
1668                        struct hostapd_bss_config *bss)
1669 {
1670         struct hostapd_data *hapd;
1671
1672         hapd = os_zalloc(sizeof(*hapd));
1673         if (hapd == NULL)
1674                 return NULL;
1675
1676         hapd->iconf = conf;
1677         hapd->conf = bss;
1678         hapd->iface = hapd_iface;
1679
1680         if (hapd->conf->individual_wep_key_len > 0) {
1681                 /* use key0 in individual key and key1 in broadcast key */
1682                 hapd->default_wep_key_idx = 1;
1683         }
1684
1685 #ifdef EAP_TLS_FUNCS
1686         if (hapd->conf->eap_server &&
1687             (hapd->conf->ca_cert || hapd->conf->server_cert ||
1688              hapd->conf->dh_file)) {
1689                 struct tls_connection_params params;
1690
1691                 hapd->ssl_ctx = tls_init(NULL);
1692                 if (hapd->ssl_ctx == NULL) {
1693                         wpa_printf(MSG_ERROR, "Failed to initialize TLS");
1694                         goto fail;
1695                 }
1696
1697                 os_memset(&params, 0, sizeof(params));
1698                 params.ca_cert = hapd->conf->ca_cert;
1699                 params.client_cert = hapd->conf->server_cert;
1700                 params.private_key = hapd->conf->private_key;
1701                 params.private_key_passwd = hapd->conf->private_key_passwd;
1702                 params.dh_file = hapd->conf->dh_file;
1703
1704                 if (tls_global_set_params(hapd->ssl_ctx, &params)) {
1705                         wpa_printf(MSG_ERROR, "Failed to set TLS parameters");
1706                         goto fail;
1707                 }
1708
1709                 if (tls_global_set_verify(hapd->ssl_ctx,
1710                                           hapd->conf->check_crl)) {
1711                         wpa_printf(MSG_ERROR, "Failed to enable check_crl");
1712                         goto fail;
1713                 }
1714         }
1715 #endif /* EAP_TLS_FUNCS */
1716
1717 #ifdef EAP_SERVER
1718         if (hapd->conf->eap_sim_db) {
1719                 hapd->eap_sim_db_priv =
1720                         eap_sim_db_init(hapd->conf->eap_sim_db,
1721                                         hostapd_sim_db_cb, hapd);
1722                 if (hapd->eap_sim_db_priv == NULL) {
1723                         wpa_printf(MSG_ERROR, "Failed to initialize EAP-SIM "
1724                                    "database interface");
1725                         goto fail;
1726                 }
1727         }
1728 #endif /* EAP_SERVER */
1729
1730         hapd->driver = hapd->iconf->driver;
1731
1732         return hapd;
1733
1734 #if defined(EAP_TLS_FUNCS) || defined(EAP_SERVER)
1735 fail:
1736 #endif
1737         /* TODO: cleanup allocated resources(?) */
1738         os_free(hapd);
1739         return NULL;
1740 }
1741
1742
1743 /**
1744  * hostapd_init - Allocate and initialize per-interface data
1745  * @config_file: Path to the configuration file
1746  * Returns: Pointer to the allocated interface data or %NULL on failure
1747  *
1748  * This function is used to allocate main data structures for per-interface
1749  * data. The allocated data buffer will be freed by calling
1750  * hostapd_cleanup_iface().
1751  */
1752 static struct hostapd_iface * hostapd_init(const char *config_file)
1753 {
1754         struct hostapd_iface *hapd_iface = NULL;
1755         struct hostapd_config *conf = NULL;
1756         struct hostapd_data *hapd;
1757         size_t i;
1758
1759         hapd_iface = os_zalloc(sizeof(*hapd_iface));
1760         if (hapd_iface == NULL)
1761                 goto fail;
1762
1763         hapd_iface->config_fname = os_strdup(config_file);
1764         if (hapd_iface->config_fname == NULL)
1765                 goto fail;
1766
1767         conf = hostapd_config_read(hapd_iface->config_fname);
1768         if (conf == NULL)
1769                 goto fail;
1770         hapd_iface->conf = conf;
1771
1772         hapd_iface->num_bss = conf->num_bss;
1773         hapd_iface->bss = os_zalloc(conf->num_bss *
1774                                     sizeof(struct hostapd_data *));
1775         if (hapd_iface->bss == NULL)
1776                 goto fail;
1777
1778         for (i = 0; i < conf->num_bss; i++) {
1779                 hapd = hapd_iface->bss[i] =
1780                         hostapd_alloc_bss_data(hapd_iface, conf,
1781                                                &conf->bss[i]);
1782                 if (hapd == NULL)
1783                         goto fail;
1784         }
1785
1786         return hapd_iface;
1787
1788 fail:
1789         if (conf)
1790                 hostapd_config_free(conf);
1791         if (hapd_iface) {
1792                 for (i = 0; hapd_iface->bss && i < hapd_iface->num_bss; i++) {
1793                         hapd = hapd_iface->bss[i];
1794                         if (hapd && hapd->ssl_ctx)
1795                                 tls_deinit(hapd->ssl_ctx);
1796                 }
1797
1798                 os_free(hapd_iface->config_fname);
1799                 os_free(hapd_iface->bss);
1800                 os_free(hapd_iface);
1801         }
1802         return NULL;
1803 }
1804
1805
1806 static int hostapd_global_init(struct hapd_interfaces *interfaces)
1807 {
1808         hostapd_logger_register_cb(hostapd_logger_cb);
1809
1810         if (eap_server_register_methods()) {
1811                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
1812                 return -1;
1813         }
1814
1815         if (eloop_init(interfaces)) {
1816                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
1817                 return -1;
1818         }
1819
1820 #ifndef CONFIG_NATIVE_WINDOWS
1821         eloop_register_signal(SIGHUP, handle_reload, NULL);
1822         eloop_register_signal(SIGUSR1, handle_dump_state, NULL);
1823 #endif /* CONFIG_NATIVE_WINDOWS */
1824         eloop_register_signal_terminate(handle_term, NULL);
1825
1826 #ifndef CONFIG_NATIVE_WINDOWS
1827         openlog("hostapd", 0, LOG_DAEMON);
1828 #endif /* CONFIG_NATIVE_WINDOWS */
1829
1830         return 0;
1831 }
1832
1833
1834 static void hostapd_global_deinit(const char *pid_file)
1835 {
1836 #ifdef EAP_SERVER_TNC
1837         tncs_global_deinit();
1838 #endif /* EAP_SERVER_TNC */
1839
1840         eloop_destroy();
1841
1842 #ifndef CONFIG_NATIVE_WINDOWS
1843         closelog();
1844 #endif /* CONFIG_NATIVE_WINDOWS */
1845
1846         eap_server_unregister_methods();
1847
1848         os_daemonize_terminate(pid_file);
1849 }
1850
1851
1852 static void hostapd_interface_deinit(struct hostapd_iface *iface)
1853 {
1854         size_t j;
1855
1856         if (iface == NULL)
1857                 return;
1858
1859         hostapd_cleanup_iface_pre(iface);
1860         for (j = 0; j < iface->num_bss; j++) {
1861                 struct hostapd_data *hapd = iface->bss[j];
1862                 hostapd_free_stas(hapd);
1863                 hostapd_flush_old_stations(hapd);
1864                 hostapd_cleanup(hapd);
1865                 if (j == iface->num_bss - 1 && hapd->driver)
1866                         hostapd_driver_deinit(hapd);
1867         }
1868         for (j = 0; j < iface->num_bss; j++)
1869                 os_free(iface->bss[j]);
1870         hostapd_cleanup_iface(iface);
1871 }
1872
1873
1874 static struct hostapd_iface * hostapd_interface_init(const char *config_fname,
1875                                                      int debug)
1876 {
1877         struct hostapd_iface *iface;
1878         int k;
1879
1880         wpa_printf(MSG_ERROR, "Configuration file: %s", config_fname);
1881         iface = hostapd_init(config_fname);
1882         if (!iface)
1883                 return NULL;
1884
1885         for (k = 0; k < debug; k++) {
1886                 if (iface->bss[0]->conf->logger_stdout_level > 0)
1887                         iface->bss[0]->conf->logger_stdout_level--;
1888         }
1889
1890         if (hostapd_setup_interface(iface)) {
1891                 hostapd_interface_deinit(iface);
1892                 return NULL;
1893         }
1894
1895         return iface;
1896 }
1897
1898
1899 static int hostapd_global_run(struct hapd_interfaces *ifaces, int daemonize,
1900                               const char *pid_file)
1901 {
1902 #ifdef EAP_SERVER_TNC
1903         int tnc = 0;
1904         size_t i, k;
1905
1906         for (i = 0; !tnc && i < ifaces->count; i++) {
1907                 for (k = 0; k < ifaces->iface[i]->num_bss; k++) {
1908                         if (ifaces->iface[i]->bss[0]->conf->tnc) {
1909                                 tnc++;
1910                                 break;
1911                         }
1912                 }
1913         }
1914
1915         if (tnc && tncs_global_init() < 0) {
1916                 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
1917                 return -1;
1918         }
1919 #endif /* EAP_SERVER_TNC */
1920
1921         if (daemonize && os_daemonize(pid_file)) {
1922                 perror("daemon");
1923                 return -1;
1924         }
1925
1926         eloop_run();
1927
1928         return 0;
1929 }
1930
1931
1932 int main(int argc, char *argv[])
1933 {
1934         struct hapd_interfaces interfaces;
1935         int ret = 1;
1936         size_t i;
1937         int c, debug = 0, daemonize = 0;
1938         const char *pid_file = NULL;
1939
1940         for (;;) {
1941                 c = getopt(argc, argv, "BdhKP:tv");
1942                 if (c < 0)
1943                         break;
1944                 switch (c) {
1945                 case 'h':
1946                         usage();
1947                         break;
1948                 case 'd':
1949                         debug++;
1950                         if (wpa_debug_level > 0)
1951                                 wpa_debug_level--;
1952                         break;
1953                 case 'B':
1954                         daemonize++;
1955                         break;
1956                 case 'K':
1957                         wpa_debug_show_keys++;
1958                         break;
1959                 case 'P':
1960                         pid_file = optarg;
1961                         break;
1962                 case 't':
1963                         wpa_debug_timestamp++;
1964                         break;
1965                 case 'v':
1966                         show_version();
1967                         exit(1);
1968                         break;
1969
1970                 default:
1971                         usage();
1972                         break;
1973                 }
1974         }
1975
1976         if (optind == argc)
1977                 usage();
1978
1979         interfaces.count = argc - optind;
1980         interfaces.iface = os_malloc(interfaces.count *
1981                                      sizeof(struct hostapd_iface *));
1982         if (interfaces.iface == NULL) {
1983                 wpa_printf(MSG_ERROR, "malloc failed\n");
1984                 return -1;
1985         }
1986
1987         if (hostapd_global_init(&interfaces))
1988                 return -1;
1989
1990         /* Initialize interfaces */
1991         for (i = 0; i < interfaces.count; i++) {
1992                 interfaces.iface[i] = hostapd_interface_init(argv[optind + i],
1993                                                              debug);
1994                 if (!interfaces.iface[i])
1995                         goto out;
1996         }
1997
1998         if (hostapd_global_run(&interfaces, daemonize, pid_file))
1999                 goto out;
2000
2001         ret = 0;
2002
2003  out:
2004         /* Deinitialize all interfaces */
2005         for (i = 0; i < interfaces.count; i++)
2006                 hostapd_interface_deinit(interfaces.iface[i]);
2007         os_free(interfaces.iface);
2008
2009         hostapd_global_deinit(pid_file);
2010
2011         return ret;
2012 }