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_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
 458                                     i == 0 ? 1 : 0, NULL, 0, NULL, 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_key(ifname, hapd, WPA_ALG_NONE, NULL,
 468                                             i, i == 0 ? 1 : 0, NULL, 0,
 469                                             NULL, 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_key(hapd->conf->iface,
 495                             hapd, WPA_ALG_WEP, NULL, idx, idx == ssid->wep.idx,
 496                             NULL, 0, ssid->wep.key[idx], ssid->wep.len[idx])) {
 497                 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
 498                 errors++;
 499         }
 500
 501         if (ssid->dyn_vlan_keys) {
 502                 size_t i;
 503                 for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
 504                         const char *ifname;
 505                         struct hostapd_wep_keys *key = ssid->dyn_vlan_keys[i];
 506                         if (key == NULL)
 507                                 continue;
 508                         ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan,
 509                                                             i);
 510                         if (ifname == NULL)
 511                                 continue;
 512
 513                         idx = key->idx;
 514                         if (hostapd_set_key(ifname, hapd, WPA_ALG_WEP, NULL,
 515                                             idx, idx == key->idx, NULL, 0,
 516                                             key->key[idx], key->len[idx])) {
 517                                 wpa_printf(MSG_WARNING, "Could not set "
 518                                            "dynamic VLAN WEP encryption.");
 519                                 errors++;
 520                         }
 521                 }
 522         }
 523
 524         return errors;
 525 }
 526
 527 /**
 528  * hostapd_cleanup - Per-BSS cleanup (deinitialization)
 529  * @hapd: Pointer to BSS data
 530  *
 531  * This function is used to free all per-BSS data structures and resources.
 532  * This gets called in a loop for each BSS between calls to
 533  * hostapd_cleanup_iface_pre() and hostapd_cleanup_iface() when an interface
 534  * is deinitialized. Most of the modules that are initialized in
 535  * hostapd_setup_bss() are deinitialized here.
 536  */
 537 static void hostapd_cleanup(struct hostapd_data *hapd)
 538 {
 539         hostapd_ctrl_iface_deinit(hapd);
 540
 541         os_free(hapd->default_wep_key);
 542         hapd->default_wep_key = NULL;
 543         iapp_deinit(hapd->iapp);
 544         hapd->iapp = NULL;
 545         accounting_deinit(hapd);
 546         rsn_preauth_iface_deinit(hapd);
 547         if (hapd->wpa_auth) {
 548                 wpa_deinit(hapd->wpa_auth);
 549                 hapd->wpa_auth = NULL;
 550
 551                 if (hostapd_set_privacy(hapd, 0)) {
 552                         wpa_printf(MSG_DEBUG, "Could not disable "
 553                                    "PrivacyInvoked for interface %s",
 554                                    hapd->conf->iface);
 555                 }
 556
 557                 if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
 558                         wpa_printf(MSG_DEBUG, "Could not remove generic "
 559                                    "information element from interface %s",
 560                                    hapd->conf->iface);
 561                 }
 562         }
 563         ieee802_1x_deinit(hapd);
 564         vlan_deinit(hapd);
 565         hostapd_acl_deinit(hapd);
 566         radius_client_deinit(hapd->radius);
 567         hapd->radius = NULL;
 568         radius_server_deinit(hapd->radius_srv);
 569         hapd->radius_srv = NULL;
 570
 571 #ifdef CONFIG_IEEE80211R
 572         l2_packet_deinit(hapd->l2);
 573 #endif /* CONFIG_IEEE80211R */
 574
 575         hostapd_deinit_wps(hapd);
 576
 577         hostapd_wireless_event_deinit(hapd);
 578
 579 #ifdef EAP_TLS_FUNCS
 580         if (hapd->ssl_ctx) {
 581                 tls_deinit(hapd->ssl_ctx);
 582                 hapd->ssl_ctx = NULL;
 583         }
 584 #endif /* EAP_TLS_FUNCS */
 585
 586 #ifdef EAP_SERVER
 587         if (hapd->eap_sim_db_priv) {
 588                 eap_sim_db_deinit(hapd->eap_sim_db_priv);
 589                 hapd->eap_sim_db_priv = NULL;
 590         }
 591 #endif /* EAP_SERVER */
 592
 593         if (hapd->interface_added &&
 594             hostapd_bss_remove(hapd, hapd->conf->iface)) {
 595                 wpa_printf(MSG_WARNING, "Failed to remove BSS interface %s",
 596                            hapd->conf->iface);
 597         }
 598 }
 599
 600
 601 /**
 602  * hostapd_cleanup_iface_pre - Preliminary per-interface cleanup
 603  * @iface: Pointer to interface data
 604  *
 605  * This function is called before per-BSS data structures are deinitialized
 606  * with hostapd_cleanup().
 607  */
 608 static void hostapd_cleanup_iface_pre(struct hostapd_iface *iface)
 609 {
 610 }
 611
 612
 613 /**
 614  * hostapd_cleanup_iface - Complete per-interface cleanup
 615  * @iface: Pointer to interface data
 616  *
 617  * This function is called after per-BSS data structures are deinitialized
 618  * with hostapd_cleanup().
 619  */
 620 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
 621 {
 622         hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
 623         iface->hw_features = NULL;
 624         os_free(iface->current_rates);
 625         iface->current_rates = NULL;
 626         ap_list_deinit(iface);
 627         hostapd_config_free(iface->conf);
 628         iface->conf = NULL;
 629
 630         os_free(iface->config_fname);
 631         os_free(iface->bss);
 632         os_free(iface);
 633 }
 634
 635
 636 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
 637 {
 638         int i;
 639
 640         hostapd_broadcast_wep_set(hapd);
 641
 642         if (hapd->conf->ssid.wep.default_len)
 643                 return 0;
 644
 645         for (i = 0; i < 4; i++) {
 646                 if (hapd->conf->ssid.wep.key[i] &&
 647                     hostapd_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
 648                                     i == hapd->conf->ssid.wep.idx, NULL, 0,
 649                                     hapd->conf->ssid.wep.key[i],
 650                                     hapd->conf->ssid.wep.len[i])) {
 651                         wpa_printf(MSG_WARNING, "Could not set WEP "
 652                                    "encryption.");
 653                         return -1;
 654                 }
 655                 if (hapd->conf->ssid.wep.key[i] &&
 656                     i == hapd->conf->ssid.wep.idx)
 657                         hostapd_set_privacy(hapd, 1);
 658         }
 659
 660         return 0;
 661 }
 662
 663
 664 static int hostapd_flush_old_stations(struct hostapd_data *hapd)
 665 {
 666         int ret = 0;
 667
 668         if (hostapd_drv_none(hapd))
 669                 return 0;
 670
 671         wpa_printf(MSG_DEBUG, "Flushing old station entries");
 672         if (hostapd_flush(hapd)) {
 673                 wpa_printf(MSG_WARNING, "Could not connect to kernel driver.");
 674                 ret = -1;
 675         }
 676         wpa_printf(MSG_DEBUG, "Deauthenticate all stations");
 677
 678         /* New Prism2.5/3 STA firmware versions seem to have issues with this
 679          * broadcast deauth frame. This gets the firmware in odd state where
 680          * nothing works correctly, so let's skip sending this for the hostap
 681          * driver. */
 682         if (hapd->driver && os_strcmp(hapd->driver->name, "hostap") != 0) {
 683                 u8 addr[ETH_ALEN];
 684                 os_memset(addr, 0xff, ETH_ALEN);
 685                 hostapd_sta_deauth(hapd, addr,
 686                                    WLAN_REASON_PREV_AUTH_NOT_VALID);
 687         }
 688
 689         return ret;
 690 }
 691
 692
 693 static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
 694                                     logger_level level, const char *txt)
 695 {
 696 #ifndef CONFIG_NO_HOSTAPD_LOGGER
 697         struct hostapd_data *hapd = ctx;
 698         int hlevel;
 699
 700         switch (level) {
 701         case LOGGER_WARNING:
 702                 hlevel = HOSTAPD_LEVEL_WARNING;
 703                 break;
 704         case LOGGER_INFO:
 705                 hlevel = HOSTAPD_LEVEL_INFO;
 706                 break;
 707         case LOGGER_DEBUG:
 708         default:
 709                 hlevel = HOSTAPD_LEVEL_DEBUG;
 710                 break;
 711         }
 712
 713         hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
 714 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
 715 }
 716
 717
 718 static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
 719                                         u16 reason)
 720 {
 721         struct hostapd_data *hapd = ctx;
 722         struct sta_info *sta;
 723
 724         wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
 725                    "STA " MACSTR " reason %d",
 726                    __func__, MAC2STR(addr), reason);
 727
 728         sta = ap_get_sta(hapd, addr);
 729         hostapd_sta_deauth(hapd, addr, reason);
 730         if (sta == NULL)
 731                 return;
 732         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_AUTHORIZED);
 733         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 734         eloop_register_timeout(0, 0, ap_handle_timer, hapd, sta);
 735         sta->timeout_next = STA_REMOVE;
 736 }
 737
 738
 739 static void hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
 740 {
 741         struct hostapd_data *hapd = ctx;
 742         michael_mic_failure(hapd, addr, 0);
 743 }
 744
 745
 746 static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
 747                                        wpa_eapol_variable var, int value)
 748 {
 749         struct hostapd_data *hapd = ctx;
 750         struct sta_info *sta = ap_get_sta(hapd, addr);
 751         if (sta == NULL)
 752                 return;
 753         switch (var) {
 754         case WPA_EAPOL_portEnabled:
 755                 ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
 756                 break;
 757         case WPA_EAPOL_portValid:
 758                 ieee802_1x_notify_port_valid(sta->eapol_sm, value);
 759                 break;
 760         case WPA_EAPOL_authorized:
 761                 ieee802_1x_set_sta_authorized(hapd, sta, value);
 762                 break;
 763         case WPA_EAPOL_portControl_Auto:
 764                 if (sta->eapol_sm)
 765                         sta->eapol_sm->portControl = Auto;
 766                 break;
 767         case WPA_EAPOL_keyRun:
 768                 if (sta->eapol_sm)
 769                         sta->eapol_sm->keyRun = value ? TRUE : FALSE;
 770                 break;
 771         case WPA_EAPOL_keyAvailable:
 772                 if (sta->eapol_sm)
 773                         sta->eapol_sm->eap_if->eapKeyAvailable =
 774                                 value ? TRUE : FALSE;
 775                 break;
 776         case WPA_EAPOL_keyDone:
 777                 if (sta->eapol_sm)
 778                         sta->eapol_sm->keyDone = value ? TRUE : FALSE;
 779                 break;
 780         case WPA_EAPOL_inc_EapolFramesTx:
 781                 if (sta->eapol_sm)
 782                         sta->eapol_sm->dot1xAuthEapolFramesTx++;
 783                 break;
 784         }
 785 }
 786
 787
 788 static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
 789                                       wpa_eapol_variable var)
 790 {
 791         struct hostapd_data *hapd = ctx;
 792         struct sta_info *sta = ap_get_sta(hapd, addr);
 793         if (sta == NULL || sta->eapol_sm == NULL)
 794                 return -1;
 795         switch (var) {
 796         case WPA_EAPOL_keyRun:
 797                 return sta->eapol_sm->keyRun;
 798         case WPA_EAPOL_keyAvailable:
 799                 return sta->eapol_sm->eap_if->eapKeyAvailable;
 800         default:
 801                 return -1;
 802         }
 803 }
 804
 805
 806 static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
 807                                            const u8 *prev_psk)
 808 {
 809         struct hostapd_data *hapd = ctx;
 810         return hostapd_get_psk(hapd->conf, addr, prev_psk);
 811 }
 812
 813
 814 static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
 815                                     size_t *len)
 816 {
 817         struct hostapd_data *hapd = ctx;
 818         const u8 *key;
 819         size_t keylen;
 820         struct sta_info *sta;
 821
 822         sta = ap_get_sta(hapd, addr);
 823         if (sta == NULL)
 824                 return -1;
 825
 826         key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
 827         if (key == NULL)
 828                 return -1;
 829
 830         if (keylen > *len)
 831                 keylen = *len;
 832         os_memcpy(msk, key, keylen);
 833         *len = keylen;
 834
 835         return 0;
 836 }
 837
 838
 839 static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, wpa_alg alg,
 840                                     const u8 *addr, int idx, u8 *key,
 841                                     size_t key_len)
 842 {
 843         struct hostapd_data *hapd = ctx;
 844         const char *ifname = hapd->conf->iface;
 845
 846         if (vlan_id > 0) {
 847                 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
 848                 if (ifname == NULL)
 849                         return -1;
 850         }
 851
 852         return hostapd_set_key(ifname, hapd, alg, addr, idx, 1, NULL, 0,
 853                                key, key_len);
 854 }
 855
 856
 857 static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
 858                                        u8 *seq)
 859 {
 860         struct hostapd_data *hapd = ctx;
 861         return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
 862 }
 863
 864
 865 static int hostapd_wpa_auth_get_seqnum_igtk(void *ctx, const u8 *addr, int idx,
 866                                             u8 *seq)
 867 {
 868         struct hostapd_data *hapd = ctx;
 869         return hostapd_get_seqnum_igtk(hapd->conf->iface, hapd, addr, idx,
 870                                        seq);
 871 }
 872
 873
 874 static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
 875                                        const u8 *data, size_t data_len,
 876                                        int encrypt)
 877 {
 878         struct hostapd_data *hapd = ctx;
 879         return hostapd_send_eapol(hapd, addr, data, data_len, encrypt);
 880 }
 881
 882
 883 static int hostapd_wpa_auth_for_each_sta(
 884         void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
 885         void *cb_ctx)
 886 {
 887         struct hostapd_data *hapd = ctx;
 888         struct sta_info *sta;
 889
 890         for (sta = hapd->sta_list; sta; sta = sta->next) {
 891                 if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
 892                         return 1;
 893         }
 894         return 0;
 895 }
 896
 897
 898 static int hostapd_wpa_auth_for_each_auth(
 899         void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
 900         void *cb_ctx)
 901 {
 902         struct hostapd_data *ohapd;
 903         size_t i, j;
 904         struct hapd_interfaces *interfaces = eloop_get_user_data();
 905
 906         for (i = 0; i < interfaces->count; i++) {
 907                 for (j = 0; j < interfaces->iface[i]->num_bss; j++) {
 908                         ohapd = interfaces->iface[i]->bss[j];
 909                         if (cb(ohapd->wpa_auth, cb_ctx))
 910                                 return 1;
 911                 }
 912         }
 913
 914         return 0;
 915 }
 916
 917
 918 static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
 919                                        const u8 *data, size_t data_len)
 920 {
 921         struct hostapd_data *hapd = ctx;
 922
 923         if (hapd->driver && hapd->driver->send_ether)
 924                 return hapd->driver->send_ether(hapd->drv_priv, dst,
 925                                                 hapd->own_addr, proto,
 926                                                 data, data_len);
 927         if (hapd->l2 == NULL)
 928                 return -1;
 929         return l2_packet_send(hapd->l2, dst, proto, data, data_len);
 930 }
 931
 932
 933 #ifdef CONFIG_IEEE80211R
 934
 935 static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
 936                                            const u8 *data, size_t data_len)
 937 {
 938         struct hostapd_data *hapd = ctx;
 939         int res;
 940         struct ieee80211_mgmt *m;
 941         size_t mlen;
 942         struct sta_info *sta;
 943
 944         sta = ap_get_sta(hapd, dst);
 945         if (sta == NULL || sta->wpa_sm == NULL)
 946                 return -1;
 947
 948         m = os_zalloc(sizeof(*m) + data_len);
 949         if (m == NULL)
 950                 return -1;
 951         mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
 952         m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 953                                         WLAN_FC_STYPE_ACTION);
 954         os_memcpy(m->da, dst, ETH_ALEN);
 955         os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
 956         os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
 957         os_memcpy(&m->u, data, data_len);
 958
 959         res = hostapd_send_mgmt_frame(hapd, (u8 *) m, mlen, 0);
 960         os_free(m);
 961         return res;
 962 }
 963
 964
 965 static struct wpa_state_machine *
 966 hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
 967 {
 968         struct hostapd_data *hapd = ctx;
 969         struct sta_info *sta;
 970
 971         sta = ap_sta_add(hapd, sta_addr);
 972         if (sta == NULL)
 973                 return NULL;
 974         if (sta->wpa_sm)
 975                 return sta->wpa_sm;
 976
 977         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
 978         if (sta->wpa_sm == NULL) {
 979                 ap_free_sta(hapd, sta);
 980                 return NULL;
 981         }
 982         sta->auth_alg = WLAN_AUTH_FT;
 983
 984         return sta->wpa_sm;
 985 }
 986
 987
 988 static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
 989                                 size_t len)
 990 {
 991         struct hostapd_data *hapd = ctx;
 992         wpa_ft_rrb_rx(hapd->wpa_auth, src_addr, buf, len);
 993 }
 994
 995 #endif /* CONFIG_IEEE80211R */
 996
 997
 998 /**
 999  * hostapd_validate_bssid_configuration - Validate BSSID configuration
1000  * @iface: Pointer to interface data
1001  * Returns: 0 on success, -1 on failure
1002  *
1003  * This function is used to validate that the configured BSSIDs are valid.
1004  */
1005 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
1006 {
1007         u8 mask[ETH_ALEN] = { 0 };
1008         struct hostapd_data *hapd = iface->bss[0];
1009         unsigned int i = iface->conf->num_bss, bits = 0, j;
1010         int res;
1011         int auto_addr = 0;
1012
1013         if (hostapd_drv_none(hapd))
1014                 return 0;
1015
1016         /* Generate BSSID mask that is large enough to cover the BSSIDs. */
1017
1018         /* Determine the bits necessary to cover the number of BSSIDs. */
1019         for (i--; i; i >>= 1)
1020                 bits++;
1021
1022         /* Determine the bits necessary to any configured BSSIDs,
1023            if they are higher than the number of BSSIDs. */
1024         for (j = 0; j < iface->conf->num_bss; j++) {
1025                 if (hostapd_mac_comp_empty(iface->conf->bss[j].bssid) == 0) {
1026                         if (j)
1027                                 auto_addr++;
1028                         continue;
1029                 }
1030
1031                 for (i = 0; i < ETH_ALEN; i++) {
1032                         mask[i] |=
1033                                 iface->conf->bss[j].bssid[i] ^
1034                                 hapd->own_addr[i];
1035                 }
1036         }
1037
1038         if (!auto_addr)
1039                 goto skip_mask_ext;
1040
1041         for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
1042                 ;
1043         j = 0;
1044         if (i < ETH_ALEN) {
1045                 j = (5 - i) * 8;
1046
1047                 while (mask[i] != 0) {
1048                         mask[i] >>= 1;
1049                         j++;
1050                 }
1051         }
1052
1053         if (bits < j)
1054                 bits = j;
1055
1056         if (bits > 40) {
1057                 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
1058                            bits);
1059                 return -1;
1060         }
1061
1062         os_memset(mask, 0xff, ETH_ALEN);
1063         j = bits / 8;
1064         for (i = 5; i > 5 - j; i--)
1065                 mask[i] = 0;
1066         j = bits % 8;
1067         while (j--)
1068                 mask[i] <<= 1;
1069
1070 skip_mask_ext:
1071         wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
1072                    (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
1073
1074         res = hostapd_valid_bss_mask(hapd, hapd->own_addr, mask);
1075         if (res == 0)
1076                 return 0;
1077
1078         if (res < 0) {
1079                 wpa_printf(MSG_ERROR, "Driver did not accept BSSID mask "
1080                            MACSTR " for start address " MACSTR ".",
1081                            MAC2STR(mask), MAC2STR(hapd->own_addr));
1082                 return -1;
1083         }
1084
1085         if (!auto_addr)
1086                 return 0;
1087
1088         for (i = 0; i < ETH_ALEN; i++) {
1089                 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
1090                         wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
1091                                    " for start address " MACSTR ".",
1092                                    MAC2STR(mask), MAC2STR(hapd->own_addr));
1093                         wpa_printf(MSG_ERROR, "Start address must be the "
1094                                    "first address in the block (i.e., addr "
1095                                    "AND mask == addr).");
1096                         return -1;
1097                 }
1098         }
1099
1100         return 0;
1101 }
1102
1103
1104 static int mac_in_conf(struct hostapd_config *conf, const void *a)
1105 {
1106         size_t i;
1107
1108         for (i = 0; i < conf->num_bss; i++) {
1109                 if (hostapd_mac_comp(conf->bss[i].bssid, a) == 0) {
1110                         return 1;
1111                 }
1112         }
1113
1114         return 0;
1115 }
1116
1117
1118 static int hostapd_setup_wpa(struct hostapd_data *hapd)
1119 {
1120         struct wpa_auth_config _conf;
1121         struct wpa_auth_callbacks cb;
1122         const u8 *wpa_ie;
1123         size_t wpa_ie_len;
1124
1125         hostapd_wpa_auth_conf(hapd->conf, &_conf);
1126         os_memset(&cb, 0, sizeof(cb));
1127         cb.ctx = hapd;
1128         cb.logger = hostapd_wpa_auth_logger;
1129         cb.disconnect = hostapd_wpa_auth_disconnect;
1130         cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
1131         cb.set_eapol = hostapd_wpa_auth_set_eapol;
1132         cb.get_eapol = hostapd_wpa_auth_get_eapol;
1133         cb.get_psk = hostapd_wpa_auth_get_psk;
1134         cb.get_msk = hostapd_wpa_auth_get_msk;
1135         cb.set_key = hostapd_wpa_auth_set_key;
1136         cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
1137         cb.get_seqnum_igtk = hostapd_wpa_auth_get_seqnum_igtk;
1138         cb.send_eapol = hostapd_wpa_auth_send_eapol;
1139         cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
1140         cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
1141         cb.send_ether = hostapd_wpa_auth_send_ether;
1142 #ifdef CONFIG_IEEE80211R
1143         cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
1144         cb.add_sta = hostapd_wpa_auth_add_sta;
1145 #endif /* CONFIG_IEEE80211R */
1146         hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
1147         if (hapd->wpa_auth == NULL) {
1148                 wpa_printf(MSG_ERROR, "WPA initialization failed.");
1149                 return -1;
1150         }
1151
1152         if (hostapd_set_privacy(hapd, 1)) {
1153                 wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
1154                            "for interface %s", hapd->conf->iface);
1155                 return -1;
1156         }
1157
1158         wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
1159         if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
1160                 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
1161                            "the kernel driver.");
1162                 return -1;
1163         }
1164
1165         if (rsn_preauth_iface_init(hapd)) {
1166                 wpa_printf(MSG_ERROR, "Initialization of RSN "
1167                            "pre-authentication failed.");
1168                 return -1;
1169         }
1170
1171         return 0;
1172
1173 }
1174
1175
1176 static int hostapd_setup_radius_srv(struct hostapd_data *hapd,
1177                                     struct hostapd_bss_config *conf)
1178 {
1179         struct radius_server_conf srv;
1180         os_memset(&srv, 0, sizeof(srv));
1181         srv.client_file = conf->radius_server_clients;
1182         srv.auth_port = conf->radius_server_auth_port;
1183         srv.conf_ctx = conf;
1184         srv.eap_sim_db_priv = hapd->eap_sim_db_priv;
1185         srv.ssl_ctx = hapd->ssl_ctx;
1186         srv.pac_opaque_encr_key = conf->pac_opaque_encr_key;
1187         srv.eap_fast_a_id = conf->eap_fast_a_id;
1188         srv.eap_fast_a_id_len = conf->eap_fast_a_id_len;
1189         srv.eap_fast_a_id_info = conf->eap_fast_a_id_info;
1190         srv.eap_fast_prov = conf->eap_fast_prov;
1191         srv.pac_key_lifetime = conf->pac_key_lifetime;
1192         srv.pac_key_refresh_time = conf->pac_key_refresh_time;
1193         srv.eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
1194         srv.tnc = conf->tnc;
1195         srv.wps = hapd->wps;
1196         srv.ipv6 = conf->radius_server_ipv6;
1197         srv.get_eap_user = hostapd_radius_get_eap_user;
1198         srv.eap_req_id_text = conf->eap_req_id_text;
1199         srv.eap_req_id_text_len = conf->eap_req_id_text_len;
1200
1201         hapd->radius_srv = radius_server_init(&srv);
1202         if (hapd->radius_srv == NULL) {
1203                 wpa_printf(MSG_ERROR, "RADIUS server initialization failed.");
1204                 return -1;
1205         }
1206
1207         return 0;
1208 }
1209
1210
1211 /**
1212  * hostapd_setup_bss - Per-BSS setup (initialization)
1213  * @hapd: Pointer to BSS data
1214  * @first: Whether this BSS is the first BSS of an interface
1215  *
1216  * This function is used to initialize all per-BSS data structures and
1217  * resources. This gets called in a loop for each BSS when an interface is
1218  * initialized. Most of the modules that are initialized here will be
1219  * deinitialized in hostapd_cleanup().
1220  */
1221 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
1222 {
1223         struct hostapd_bss_config *conf = hapd->conf;
1224         u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
1225         int ssid_len, set_ssid;
1226
1227         if (!first) {
1228                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) {
1229                         /* Allocate the next available BSSID. */
1230                         do {
1231                                 inc_byte_array(hapd->own_addr, ETH_ALEN);
1232                         } while (mac_in_conf(hapd->iconf, hapd->own_addr));
1233                 } else {
1234                         /* Allocate the configured BSSID. */
1235                         os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
1236
1237                         if (hostapd_mac_comp(hapd->own_addr,
1238                                              hapd->iface->bss[0]->own_addr) ==
1239                             0) {
1240                                 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
1241                                            "BSSID set to the MAC address of "
1242                                            "the radio", hapd->conf->iface);
1243                                 return -1;
1244                         }
1245                 }
1246
1247                 hapd->interface_added = 1;
1248                 if (hostapd_bss_add(hapd->iface->bss[0], hapd->conf->iface,
1249                                     hapd->own_addr)) {
1250                         wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
1251                                    MACSTR ")", MAC2STR(hapd->own_addr));
1252                         return -1;
1253                 }
1254         }
1255
1256         /*
1257          * Fetch the SSID from the system and use it or,
1258          * if one was specified in the config file, verify they
1259          * match.
1260          */
1261         ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
1262         if (ssid_len < 0) {
1263                 wpa_printf(MSG_ERROR, "Could not read SSID from system");
1264                 return -1;
1265         }
1266         if (conf->ssid.ssid_set) {
1267                 /*
1268                  * If SSID is specified in the config file and it differs
1269                  * from what is being used then force installation of the
1270                  * new SSID.
1271                  */
1272                 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
1273                             os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
1274         } else {
1275                 /*
1276                  * No SSID in the config file; just use the one we got
1277                  * from the system.
1278                  */
1279                 set_ssid = 0;
1280                 conf->ssid.ssid_len = ssid_len;
1281                 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
1282                 conf->ssid.ssid[conf->ssid.ssid_len] = '\0';
1283         }
1284
1285         if (!hostapd_drv_none(hapd)) {
1286                 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
1287                            " and ssid '%s'",
1288                            hapd->conf->iface, MAC2STR(hapd->own_addr),
1289                            hapd->conf->ssid.ssid);
1290         }
1291
1292         if (hostapd_setup_wpa_psk(conf)) {
1293                 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
1294                 return -1;
1295         }
1296
1297         /* Set flag for whether SSID is broadcast in beacons */
1298         if (hostapd_set_broadcast_ssid(hapd,
1299                                        !!hapd->conf->ignore_broadcast_ssid)) {
1300                 wpa_printf(MSG_ERROR, "Could not set broadcast SSID flag for "
1301                            "kernel driver");
1302                 return -1;
1303         }
1304
1305         /* Set SSID for the kernel driver (to be used in beacon and probe
1306          * response frames) */
1307         if (set_ssid && hostapd_set_ssid(hapd, (u8 *) conf->ssid.ssid,
1308                                          conf->ssid.ssid_len)) {
1309                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
1310                 return -1;
1311         }
1312
1313         if (wpa_debug_level == MSG_MSGDUMP)
1314                 conf->radius->msg_dumps = 1;
1315         hapd->radius = radius_client_init(hapd, conf->radius);
1316         if (hapd->radius == NULL) {
1317                 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
1318                 return -1;
1319         }
1320
1321         if (hostapd_acl_init(hapd)) {
1322                 wpa_printf(MSG_ERROR, "ACL initialization failed.");
1323                 return -1;
1324         }
1325         if (hostapd_init_wps(hapd, conf))
1326                 return -1;
1327
1328         if (ieee802_1x_init(hapd)) {
1329                 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
1330                 return -1;
1331         }
1332
1333         if (hapd->conf->wpa && hostapd_setup_wpa(hapd))
1334                 return -1;
1335
1336         if (accounting_init(hapd)) {
1337                 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
1338                 return -1;
1339         }
1340
1341         if (hapd->conf->ieee802_11f &&
1342             (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) {
1343                 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
1344                            "failed.");
1345                 return -1;
1346         }
1347
1348         if (hostapd_ctrl_iface_init(hapd)) {
1349                 wpa_printf(MSG_ERROR, "Failed to setup control interface");
1350                 return -1;
1351         }
1352
1353         if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
1354                 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
1355                 return -1;
1356         }
1357
1358 #ifdef CONFIG_IEEE80211R
1359         if (!hostapd_drv_none(hapd)) {
1360                 hapd->l2 = l2_packet_init(hapd->conf->iface, NULL, ETH_P_RRB,
1361                                           hostapd_rrb_receive, hapd, 0);
1362                 if (hapd->l2 == NULL &&
1363                     (hapd->driver == NULL ||
1364                      hapd->driver->send_ether == NULL)) {
1365                         wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1366                                    "interface");
1367                         return -1;
1368                 }
1369         }
1370 #endif /* CONFIG_IEEE80211R */
1371
1372         ieee802_11_set_beacon(hapd);
1373
1374         if (conf->radius_server_clients &&
1375             hostapd_setup_radius_srv(hapd, conf))
1376                 return -1;
1377
1378         return 0;
1379 }
1380
1381
1382 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
1383 {
1384         struct hostapd_data *hapd = iface->bss[0];
1385         int i;
1386         struct hostapd_tx_queue_params *p;
1387
1388         for (i = 0; i < NUM_TX_QUEUES; i++) {
1389                 p = &iface->conf->tx_queue[i];
1390
1391                 if (!p->configured)
1392                         continue;
1393
1394                 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
1395                                                 p->cwmax, p->burst)) {
1396                         wpa_printf(MSG_DEBUG, "Failed to set TX queue "
1397                                    "parameters for queue %d.", i);
1398                         /* Continue anyway */
1399                 }
1400         }
1401 }
1402
1403
1404 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
1405                                        size_t identity_len, int phase2,
1406                                        struct eap_user *user)
1407 {
1408         const struct hostapd_eap_user *eap_user;
1409         int i, count;
1410
1411         eap_user = hostapd_get_eap_user(ctx, identity, identity_len, phase2);
1412         if (eap_user == NULL)
1413                 return -1;
1414
1415         if (user == NULL)
1416                 return 0;
1417
1418         os_memset(user, 0, sizeof(*user));
1419         count = EAP_USER_MAX_METHODS;
1420         if (count > EAP_MAX_METHODS)
1421                 count = EAP_MAX_METHODS;
1422         for (i = 0; i < count; i++) {
1423                 user->methods[i].vendor = eap_user->methods[i].vendor;
1424                 user->methods[i].method = eap_user->methods[i].method;
1425         }
1426
1427         if (eap_user->password) {
1428                 user->password = os_malloc(eap_user->password_len);
1429                 if (user->password == NULL)
1430                         return -1;
1431                 os_memcpy(user->password, eap_user->password,
1432                           eap_user->password_len);
1433                 user->password_len = eap_user->password_len;
1434                 user->password_hash = eap_user->password_hash;
1435         }
1436         user->force_version = eap_user->force_version;
1437         user->ttls_auth = eap_user->ttls_auth;
1438
1439         return 0;
1440 }
1441
1442
1443 static int setup_interface(struct hostapd_iface *iface)
1444 {
1445         struct hostapd_data *hapd = iface->bss[0];
1446         struct hostapd_bss_config *conf = hapd->conf;
1447         size_t i;
1448         char country[4];
1449         u8 *b = conf->bssid;
1450         int freq;
1451         size_t j;
1452         int ret = 0;
1453         u8 *prev_addr;
1454
1455         /*
1456          * Initialize the driver interface and make sure that all BSSes get
1457          * configured with a pointer to this driver interface.
1458          */
1459         if (b[0] | b[1] | b[2] | b[3] | b[4] | b[5]) {
1460                 hapd->drv_priv = hostapd_driver_init_bssid(hapd, b);
1461         } else {
1462                 hapd->drv_priv = hostapd_driver_init(hapd);
1463         }
1464
1465         if (hapd->drv_priv == NULL) {
1466                 wpa_printf(MSG_ERROR, "%s driver initialization failed.",
1467                            hapd->driver ? hapd->driver->name : "Unknown");
1468                 hapd->driver = NULL;
1469                 return -1;
1470         }
1471         for (i = 0; i < iface->num_bss; i++) {
1472                 iface->bss[i]->driver = hapd->driver;
1473                 iface->bss[i]->drv_priv = hapd->drv_priv;
1474         }
1475
1476         if (hostapd_validate_bssid_configuration(iface))
1477                 return -1;
1478
1479 #ifdef CONFIG_IEEE80211N
1480         SET_2BIT_LE16(&iface->ht_op_mode,
1481                       HT_INFO_OPERATION_MODE_OP_MODE_OFFSET,
1482                       OP_MODE_PURE);
1483 #endif /* CONFIG_IEEE80211N */
1484
1485         if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1486                 os_memcpy(country, hapd->iconf->country, 3);
1487                 country[3] = '\0';
1488                 if (hostapd_set_country(hapd, country) < 0) {
1489                         wpa_printf(MSG_ERROR, "Failed to set country code");
1490                         return -1;
1491                 }
1492         }
1493
1494         if (hapd->iconf->ieee80211d &&
1495             hostapd_set_ieee80211d(hapd, 1) < 0) {
1496                 wpa_printf(MSG_ERROR, "Failed to set ieee80211d (%d)",
1497                            hapd->iconf->ieee80211d);
1498                 return -1;
1499         }
1500
1501         if (hapd->iconf->bridge_packets != INTERNAL_BRIDGE_DO_NOT_CONTROL &&
1502             hostapd_set_internal_bridge(hapd, hapd->iconf->bridge_packets)) {
1503                 wpa_printf(MSG_ERROR, "Failed to set bridge_packets for "
1504                            "kernel driver");
1505                 return -1;
1506         }
1507
1508         /* TODO: merge with hostapd_driver_init() ? */
1509         if (hostapd_wireless_event_init(hapd) < 0)
1510                 return -1;
1511
1512         if (hostapd_get_hw_features(iface)) {
1513                 /* Not all drivers support this yet, so continue without hw
1514                  * feature data. */
1515         } else {
1516                 int ret = hostapd_select_hw_mode(iface);
1517                 if (ret < 0) {
1518                         wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1519                                    "channel. (%d)", ret);
1520                         return -1;
1521                 }
1522         }
1523
1524         hostapd_flush_old_stations(hapd);
1525         hostapd_set_privacy(hapd, 0);
1526
1527         if (hapd->iconf->channel) {
1528                 freq = hostapd_hw_get_freq(hapd, hapd->iconf->channel);
1529                 wpa_printf(MSG_DEBUG, "Mode: %s  Channel: %d  "
1530                            "Frequency: %d MHz",
1531                            hostapd_hw_mode_txt(hapd->iconf->hw_mode),
1532                            hapd->iconf->channel, freq);
1533
1534                 if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, freq,
1535                                      hapd->iconf->ieee80211n,
1536                                      hapd->iconf->secondary_channel)) {
1537                         wpa_printf(MSG_ERROR, "Could not set channel for "
1538                                    "kernel driver");
1539                         return -1;
1540                 }
1541         }
1542
1543         hostapd_broadcast_wep_clear(hapd);
1544         if (hostapd_setup_encryption(hapd->conf->iface, hapd))
1545                 return -1;
1546
1547         hostapd_set_beacon_int(hapd, hapd->iconf->beacon_int);
1548         ieee802_11_set_beacon(hapd);
1549
1550         if (hapd->iconf->rts_threshold > -1 &&
1551             hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1552                 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1553                            "kernel driver");
1554                 return -1;
1555         }
1556
1557         if (hapd->iconf->fragm_threshold > -1 &&
1558             hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1559                 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1560                            "for kernel driver");
1561                 return -1;
1562         }
1563
1564         prev_addr = hapd->own_addr;
1565
1566         for (j = 0; j < iface->num_bss; j++) {
1567                 hapd = iface->bss[j];
1568                 if (j)
1569                         os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1570                 if (hostapd_setup_bss(hapd, j == 0))
1571                         return -1;
1572                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1573                         prev_addr = hapd->own_addr;
1574         }
1575
1576         hostapd_tx_queue_params(iface);
1577
1578         ap_list_init(iface);
1579
1580         if (hostapd_driver_commit(hapd) < 0) {
1581                 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1582                            "configuration", __func__);
1583                 return -1;
1584         }
1585
1586         return ret;
1587 }
1588
1589
1590 /**
1591  * hostapd_setup_interface - Setup of an interface
1592  * @iface: Pointer to interface data.
1593  * Returns: 0 on success, -1 on failure
1594  *
1595  * Initializes the driver interface, validates the configuration,
1596  * and sets driver parameters based on the configuration.
1597  * Flushes old stations, sets the channel, encryption,
1598  * beacons, and WDS links based on the configuration.
1599  */
1600 static int hostapd_setup_interface(struct hostapd_iface *iface)
1601 {
1602         int ret;
1603
1604         ret = setup_interface(iface);
1605         if (ret) {
1606                 wpa_printf(MSG_DEBUG, "%s: Unable to setup interface.",
1607                            iface->bss[0]->conf->iface);
1608                 eloop_terminate();
1609                 return -1;
1610         } else if (!hostapd_drv_none(iface->bss[0])) {
1611                 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1612                            iface->bss[0]->conf->iface);
1613         }
1614
1615         return 0;
1616 }
1617
1618
1619 static void show_version(void)
1620 {
1621         fprintf(stderr,
1622                 "hostapd v" VERSION_STR "\n"
1623                 "User space daemon for IEEE 802.11 AP management,\n"
1624                 "IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n"
1625                 "Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi> "
1626                 "and contributors\n");
1627 }
1628
1629
1630 static void usage(void)
1631 {
1632         show_version();
1633         fprintf(stderr,
1634                 "\n"
1635                 "usage: hostapd [-hdBKtv] [-P <PID file>] "
1636                 "<configuration file(s)>\n"
1637                 "\n"
1638                 "options:\n"
1639                 "   -h   show this usage\n"
1640                 "   -d   show more debug messages (-dd for even more)\n"
1641                 "   -B   run daemon in the background\n"
1642                 "   -P   PID file\n"
1643                 "   -K   include key data in debug messages\n"
1644                 "   -t   include timestamps in some debug messages\n"
1645                 "   -v   show hostapd version\n");
1646
1647         exit(1);
1648 }
1649
1650
1651 /**
1652  * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1653  * @hapd_iface: Pointer to interface data
1654  * @conf: Pointer to per-interface configuration
1655  * @bss: Pointer to per-BSS configuration for this BSS
1656  * Returns: Pointer to allocated BSS data
1657  *
1658  * This function is used to allocate per-BSS data structure. This data will be
1659  * freed after hostapd_cleanup() is called for it during interface
1660  * deinitialization.
1661  */
1662 static struct hostapd_data *
1663 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1664                        struct hostapd_config *conf,
1665                        struct hostapd_bss_config *bss)
1666 {
1667         struct hostapd_data *hapd;
1668
1669         hapd = os_zalloc(sizeof(*hapd));
1670         if (hapd == NULL)
1671                 return NULL;
1672
1673         hapd->iconf = conf;
1674         hapd->conf = bss;
1675         hapd->iface = hapd_iface;
1676
1677         if (hapd->conf->individual_wep_key_len > 0) {
1678                 /* use key0 in individual key and key1 in broadcast key */
1679                 hapd->default_wep_key_idx = 1;
1680         }
1681
1682 #ifdef EAP_TLS_FUNCS
1683         if (hapd->conf->eap_server &&
1684             (hapd->conf->ca_cert || hapd->conf->server_cert ||
1685              hapd->conf->dh_file)) {
1686                 struct tls_connection_params params;
1687
1688                 hapd->ssl_ctx = tls_init(NULL);
1689                 if (hapd->ssl_ctx == NULL) {
1690                         wpa_printf(MSG_ERROR, "Failed to initialize TLS");
1691                         goto fail;
1692                 }
1693
1694                 os_memset(&params, 0, sizeof(params));
1695                 params.ca_cert = hapd->conf->ca_cert;
1696                 params.client_cert = hapd->conf->server_cert;
1697                 params.private_key = hapd->conf->private_key;
1698                 params.private_key_passwd = hapd->conf->private_key_passwd;
1699                 params.dh_file = hapd->conf->dh_file;
1700
1701                 if (tls_global_set_params(hapd->ssl_ctx, &params)) {
1702                         wpa_printf(MSG_ERROR, "Failed to set TLS parameters");
1703                         goto fail;
1704                 }
1705
1706                 if (tls_global_set_verify(hapd->ssl_ctx,
1707                                           hapd->conf->check_crl)) {
1708                         wpa_printf(MSG_ERROR, "Failed to enable check_crl");
1709                         goto fail;
1710                 }
1711         }
1712 #endif /* EAP_TLS_FUNCS */
1713
1714 #ifdef EAP_SERVER
1715         if (hapd->conf->eap_sim_db) {
1716                 hapd->eap_sim_db_priv =
1717                         eap_sim_db_init(hapd->conf->eap_sim_db,
1718                                         hostapd_sim_db_cb, hapd);
1719                 if (hapd->eap_sim_db_priv == NULL) {
1720                         wpa_printf(MSG_ERROR, "Failed to initialize EAP-SIM "
1721                                    "database interface");
1722                         goto fail;
1723                 }
1724         }
1725 #endif /* EAP_SERVER */
1726
1727         hapd->driver = hapd->iconf->driver;
1728
1729         return hapd;
1730
1731 #if defined(EAP_TLS_FUNCS) || defined(EAP_SERVER)
1732 fail:
1733 #endif
1734         /* TODO: cleanup allocated resources(?) */
1735         os_free(hapd);
1736         return NULL;
1737 }
1738
1739
1740 /**
1741  * hostapd_init - Allocate and initialize per-interface data
1742  * @config_file: Path to the configuration file
1743  * Returns: Pointer to the allocated interface data or %NULL on failure
1744  *
1745  * This function is used to allocate main data structures for per-interface
1746  * data. The allocated data buffer will be freed by calling
1747  * hostapd_cleanup_iface().
1748  */
1749 static struct hostapd_iface * hostapd_init(const char *config_file)
1750 {
1751         struct hostapd_iface *hapd_iface = NULL;
1752         struct hostapd_config *conf = NULL;
1753         struct hostapd_data *hapd;
1754         size_t i;
1755
1756         hapd_iface = os_zalloc(sizeof(*hapd_iface));
1757         if (hapd_iface == NULL)
1758                 goto fail;
1759
1760         hapd_iface->config_fname = os_strdup(config_file);
1761         if (hapd_iface->config_fname == NULL)
1762                 goto fail;
1763
1764         conf = hostapd_config_read(hapd_iface->config_fname);
1765         if (conf == NULL)
1766                 goto fail;
1767         hapd_iface->conf = conf;
1768
1769         hapd_iface->num_bss = conf->num_bss;
1770         hapd_iface->bss = os_zalloc(conf->num_bss *
1771                                     sizeof(struct hostapd_data *));
1772         if (hapd_iface->bss == NULL)
1773                 goto fail;
1774
1775         for (i = 0; i < conf->num_bss; i++) {
1776                 hapd = hapd_iface->bss[i] =
1777                         hostapd_alloc_bss_data(hapd_iface, conf,
1778                                                &conf->bss[i]);
1779                 if (hapd == NULL)
1780                         goto fail;
1781         }
1782
1783         return hapd_iface;
1784
1785 fail:
1786         if (conf)
1787                 hostapd_config_free(conf);
1788         if (hapd_iface) {
1789                 for (i = 0; hapd_iface->bss && i < hapd_iface->num_bss; i++) {
1790                         hapd = hapd_iface->bss[i];
1791                         if (hapd && hapd->ssl_ctx)
1792                                 tls_deinit(hapd->ssl_ctx);
1793                 }
1794
1795                 os_free(hapd_iface->config_fname);
1796                 os_free(hapd_iface->bss);
1797                 os_free(hapd_iface);
1798         }
1799         return NULL;
1800 }
1801
1802
1803 static int hostapd_global_init(struct hapd_interfaces *interfaces)
1804 {
1805         hostapd_logger_register_cb(hostapd_logger_cb);
1806
1807         if (eap_server_register_methods()) {
1808                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
1809                 return -1;
1810         }
1811
1812         if (eloop_init(interfaces)) {
1813                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
1814                 return -1;
1815         }
1816
1817 #ifndef CONFIG_NATIVE_WINDOWS
1818         eloop_register_signal(SIGHUP, handle_reload, NULL);
1819         eloop_register_signal(SIGUSR1, handle_dump_state, NULL);
1820 #endif /* CONFIG_NATIVE_WINDOWS */
1821         eloop_register_signal_terminate(handle_term, NULL);
1822
1823 #ifndef CONFIG_NATIVE_WINDOWS
1824         openlog("hostapd", 0, LOG_DAEMON);
1825 #endif /* CONFIG_NATIVE_WINDOWS */
1826
1827         return 0;
1828 }
1829
1830
1831 static void hostapd_global_deinit(const char *pid_file)
1832 {
1833 #ifdef EAP_SERVER_TNC
1834         tncs_global_deinit();
1835 #endif /* EAP_SERVER_TNC */
1836
1837         eloop_destroy();
1838
1839 #ifndef CONFIG_NATIVE_WINDOWS
1840         closelog();
1841 #endif /* CONFIG_NATIVE_WINDOWS */
1842
1843         eap_server_unregister_methods();
1844
1845         os_daemonize_terminate(pid_file);
1846 }
1847
1848
1849 static void hostapd_interface_deinit(struct hostapd_iface *iface)
1850 {
1851         size_t j;
1852
1853         if (iface == NULL)
1854                 return;
1855
1856         hostapd_cleanup_iface_pre(iface);
1857         for (j = 0; j < iface->num_bss; j++) {
1858                 struct hostapd_data *hapd = iface->bss[j];
1859                 hostapd_free_stas(hapd);
1860                 hostapd_flush_old_stations(hapd);
1861                 hostapd_cleanup(hapd);
1862                 if (j == iface->num_bss - 1 && hapd->driver)
1863                         hostapd_driver_deinit(hapd);
1864         }
1865         for (j = 0; j < iface->num_bss; j++)
1866                 os_free(iface->bss[j]);
1867         hostapd_cleanup_iface(iface);
1868 }
1869
1870
1871 static struct hostapd_iface * hostapd_interface_init(const char *config_fname,
1872                                                      int debug)
1873 {
1874         struct hostapd_iface *iface;
1875         int k;
1876
1877         wpa_printf(MSG_ERROR, "Configuration file: %s", config_fname);
1878         iface = hostapd_init(config_fname);
1879         if (!iface)
1880                 return NULL;
1881
1882         for (k = 0; k < debug; k++) {
1883                 if (iface->bss[0]->conf->logger_stdout_level > 0)
1884                         iface->bss[0]->conf->logger_stdout_level--;
1885         }
1886
1887         if (hostapd_setup_interface(iface)) {
1888                 hostapd_interface_deinit(iface);
1889                 return NULL;
1890         }
1891
1892         return iface;
1893 }
1894
1895
1896 static int hostapd_global_run(struct hapd_interfaces *ifaces, int daemonize,
1897                               const char *pid_file)
1898 {
1899 #ifdef EAP_SERVER_TNC
1900         int tnc = 0;
1901         size_t i, k;
1902
1903         for (i = 0; !tnc && i < ifaces->count; i++) {
1904                 for (k = 0; k < ifaces->iface[i]->num_bss; k++) {
1905                         if (ifaces->iface[i]->bss[0]->conf->tnc) {
1906                                 tnc++;
1907                                 break;
1908                         }
1909                 }
1910         }
1911
1912         if (tnc && tncs_global_init() < 0) {
1913                 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
1914                 return -1;
1915         }
1916 #endif /* EAP_SERVER_TNC */
1917
1918         if (daemonize && os_daemonize(pid_file)) {
1919                 perror("daemon");
1920                 return -1;
1921         }
1922
1923         eloop_run();
1924
1925         return 0;
1926 }
1927
1928
1929 int main(int argc, char *argv[])
1930 {
1931         struct hapd_interfaces interfaces;
1932         int ret = 1;
1933         size_t i;
1934         int c, debug = 0, daemonize = 0;
1935         const char *pid_file = NULL;
1936
1937         for (;;) {
1938                 c = getopt(argc, argv, "BdhKP:tv");
1939                 if (c < 0)
1940                         break;
1941                 switch (c) {
1942                 case 'h':
1943                         usage();
1944                         break;
1945                 case 'd':
1946                         debug++;
1947                         if (wpa_debug_level > 0)
1948                                 wpa_debug_level--;
1949                         break;
1950                 case 'B':
1951                         daemonize++;
1952                         break;
1953                 case 'K':
1954                         wpa_debug_show_keys++;
1955                         break;
1956                 case 'P':
1957                         pid_file = optarg;
1958                         break;
1959                 case 't':
1960                         wpa_debug_timestamp++;
1961                         break;
1962                 case 'v':
1963                         show_version();
1964                         exit(1);
1965                         break;
1966
1967                 default:
1968                         usage();
1969                         break;
1970                 }
1971         }
1972
1973         if (optind == argc)
1974                 usage();
1975
1976         interfaces.count = argc - optind;
1977         interfaces.iface = os_malloc(interfaces.count *
1978                                      sizeof(struct hostapd_iface *));
1979         if (interfaces.iface == NULL) {
1980                 wpa_printf(MSG_ERROR, "malloc failed\n");
1981                 return -1;
1982         }
1983
1984         if (hostapd_global_init(&interfaces))
1985                 return -1;
1986
1987         /* Initialize interfaces */
1988         for (i = 0; i < interfaces.count; i++) {
1989                 interfaces.iface[i] = hostapd_interface_init(argv[optind + i],
1990                                                              debug);
1991                 if (!interfaces.iface[i])
1992                         goto out;
1993         }
1994
1995         if (hostapd_global_run(&interfaces, daemonize, pid_file))
1996                 goto out;
1997
1998         ret = 0;
1999
2000  out:
2001         /* Deinitialize all interfaces */
2002         for (i = 0; i < interfaces.count; i++)
2003                 hostapd_interface_deinit(interfaces.iface[i]);
2004         os_free(interfaces.iface);
2005
2006         hostapd_global_deinit(pid_file);
2007
2008         return ret;
2009 }