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
  17 #include "eloop.h"
  18 #include "hostapd.h"
  19 #include "ieee802_1x.h"
  20 #include "beacon.h"
  21 #include "hw_features.h"
  22 #include "accounting.h"
  23 #include "eapol_sm.h"
  24 #include "iapp.h"
  25 #include "ieee802_11_defs.h"
  26 #include "ieee802_11_auth.h"
  27 #include "sta_info.h"
  28 #include "ap_list.h"
  29 #include "driver_i.h"
  30 #include "radius/radius_client.h"
  31 #include "radius/radius_server.h"
  32 #include "wpa.h"
  33 #include "preauth.h"
  34 #include "vlan_init.h"
  35 #include "ctrl_iface.h"
  36 #include "tls.h"
  37 #include "eap_server/eap_sim_db.h"
  38 #include "eap_server/eap.h"
  39 #include "eap_server/tncs.h"
  40 #include "version.h"
  41 #include "l2_packet/l2_packet.h"
  42 #include "wps_hostapd.h"
  43 #include "tkip_countermeasures.h"
  44
  45
  46 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
  47                                        size_t identity_len, int phase2,
  48                                        struct eap_user *user);
  49 static int hostapd_flush_old_stations(struct hostapd_data *hapd);
  50 static int hostapd_setup_wpa(struct hostapd_data *hapd);
  51 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
  52
  53 extern int wpa_debug_level;
  54
  55
  56 #ifdef EAP_SERVER
  57 static int hostapd_sim_db_cb_sta(struct hostapd_data *hapd,
  58                                  struct sta_info *sta, void *ctx)
  59 {
  60         if (eapol_auth_eap_pending_cb(sta->eapol_sm, ctx) == 0)
  61                 return 1;
  62         return 0;
  63 }
  64
  65
  66 static void hostapd_sim_db_cb(void *ctx, void *session_ctx)
  67 {
  68         struct hostapd_data *hapd = ctx;
  69         if (ap_for_each_sta(hapd, hostapd_sim_db_cb_sta, session_ctx) == 0)
  70                 radius_server_eap_pending_cb(hapd->radius_srv, session_ctx);
  71 }
  72 #endif /* EAP_SERVER */
  73
  74
  75 static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
  76                                   struct wpa_auth_config *wconf)
  77 {
  78         wconf->wpa = conf->wpa;
  79         wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
  80         wconf->wpa_pairwise = conf->wpa_pairwise;
  81         wconf->wpa_group = conf->wpa_group;
  82         wconf->wpa_group_rekey = conf->wpa_group_rekey;
  83         wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
  84         wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
  85         wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
  86         wconf->rsn_pairwise = conf->rsn_pairwise;
  87         wconf->rsn_preauth = conf->rsn_preauth;
  88         wconf->eapol_version = conf->eapol_version;
  89         wconf->peerkey = conf->peerkey;
  90         wconf->wmm_enabled = conf->wmm_enabled;
  91         wconf->okc = conf->okc;
  92 #ifdef CONFIG_IEEE80211W
  93         wconf->ieee80211w = conf->ieee80211w;
  94 #endif /* CONFIG_IEEE80211W */
  95 #ifdef CONFIG_IEEE80211R
  96         wconf->ssid_len = conf->ssid.ssid_len;
  97         if (wconf->ssid_len > SSID_LEN)
  98                 wconf->ssid_len = SSID_LEN;
  99         os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
 100         os_memcpy(wconf->mobility_domain, conf->mobility_domain,
 101                   MOBILITY_DOMAIN_ID_LEN);
 102         if (conf->nas_identifier &&
 103             os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
 104                 wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
 105                 os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
 106                           wconf->r0_key_holder_len);
 107         }
 108         os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
 109         wconf->r0_key_lifetime = conf->r0_key_lifetime;
 110         wconf->reassociation_deadline = conf->reassociation_deadline;
 111         wconf->r0kh_list = conf->r0kh_list;
 112         wconf->r1kh_list = conf->r1kh_list;
 113         wconf->pmk_r1_push = conf->pmk_r1_push;
 114 #endif /* CONFIG_IEEE80211R */
 115 }
 116
 117
 118 int hostapd_reload_config(struct hostapd_iface *iface)
 119 {
 120         struct hostapd_data *hapd = iface->bss[0];
 121         struct hostapd_config *newconf, *oldconf;
 122         struct wpa_auth_config wpa_auth_conf;
 123
 124         newconf = hostapd_config_read(iface->config_fname);
 125         if (newconf == NULL)
 126                 return -1;
 127
 128         /*
 129          * Deauthenticate all stations since the new configuration may not
 130          * allow them to use the BSS anymore.
 131          */
 132         hostapd_flush_old_stations(hapd);
 133
 134         /* TODO: update dynamic data based on changed configuration
 135          * items (e.g., open/close sockets, etc.) */
 136         radius_client_flush(hapd->radius, 0);
 137
 138         oldconf = hapd->iconf;
 139         hapd->iconf = newconf;
 140         hapd->conf = &newconf->bss[0];
 141         iface->conf = newconf;
 142
 143         if (hostapd_setup_wpa_psk(hapd->conf)) {
 144                 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
 145                            "after reloading configuration");
 146         }
 147
 148         if (hapd->conf->wpa && hapd->wpa_auth == NULL)
 149                 hostapd_setup_wpa(hapd);
 150         else if (hapd->conf->wpa) {
 151                 hostapd_wpa_auth_conf(&newconf->bss[0], &wpa_auth_conf);
 152                 wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
 153         } else if (hapd->wpa_auth) {
 154                 wpa_deinit(hapd->wpa_auth);
 155                 hapd->wpa_auth = NULL;
 156                 hostapd_set_privacy(hapd, 0);
 157                 hostapd_setup_encryption(hapd->conf->iface, hapd);
 158         }
 159
 160         ieee802_11_set_beacon(hapd);
 161
 162         hostapd_config_free(oldconf);
 163
 164         wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
 165
 166         return 0;
 167 }
 168
 169
 170 int handle_reload_iface(struct hostapd_iface *iface, void *ctx)
 171 {
 172         if (hostapd_reload_config(iface) < 0) {
 173                 wpa_printf(MSG_WARNING, "Failed to read new configuration "
 174                            "file - continuing with old.");
 175         }
 176         return 0;
 177 }
 178
 179
 180 #ifdef HOSTAPD_DUMP_STATE
 181 /**
 182  * hostapd_dump_state - SIGUSR1 handler to dump hostapd state to a text file
 183  */
 184 static void hostapd_dump_state(struct hostapd_data *hapd)
 185 {
 186         FILE *f;
 187         time_t now;
 188         struct sta_info *sta;
 189         int i;
 190         char *buf;
 191
 192         if (!hapd->conf->dump_log_name) {
 193                 wpa_printf(MSG_DEBUG, "Dump file not defined - ignoring dump "
 194                            "request");
 195                 return;
 196         }
 197
 198         wpa_printf(MSG_DEBUG, "Dumping hostapd state to '%s'",
 199                    hapd->conf->dump_log_name);
 200         f = fopen(hapd->conf->dump_log_name, "w");
 201         if (f == NULL) {
 202                 wpa_printf(MSG_WARNING, "Could not open dump file '%s' for "
 203                            "writing.", hapd->conf->dump_log_name);
 204                 return;
 205         }
 206
 207         time(&now);
 208         fprintf(f, "hostapd state dump - %s", ctime(&now));
 209         fprintf(f, "num_sta=%d num_sta_non_erp=%d "
 210                 "num_sta_no_short_slot_time=%d\n"
 211                 "num_sta_no_short_preamble=%d\n",
 212                 hapd->num_sta, hapd->iface->num_sta_non_erp,
 213                 hapd->iface->num_sta_no_short_slot_time,
 214                 hapd->iface->num_sta_no_short_preamble);
 215
 216         for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
 217                 fprintf(f, "\nSTA=" MACSTR "\n", MAC2STR(sta->addr));
 218
 219                 fprintf(f,
 220                         "  AID=%d flags=0x%x %s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
 221                         "  capability=0x%x listen_interval=%d\n",
 222                         sta->aid,
 223                         sta->flags,
 224                         (sta->flags & WLAN_STA_AUTH ? "[AUTH]" : ""),
 225                         (sta->flags & WLAN_STA_ASSOC ? "[ASSOC]" : ""),
 226                         (sta->flags & WLAN_STA_PS ? "[PS]" : ""),
 227                         (sta->flags & WLAN_STA_TIM ? "[TIM]" : ""),
 228                         (sta->flags & WLAN_STA_PERM ? "[PERM]" : ""),
 229                         (sta->flags & WLAN_STA_AUTHORIZED ? "[AUTHORIZED]" :
 230                          ""),
 231                         (sta->flags & WLAN_STA_PENDING_POLL ? "[PENDING_POLL" :
 232                          ""),
 233                         (sta->flags & WLAN_STA_SHORT_PREAMBLE ?
 234                          "[SHORT_PREAMBLE]" : ""),
 235                         (sta->flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""),
 236                         (sta->flags & WLAN_STA_WMM ? "[WMM]" : ""),
 237                         (sta->flags & WLAN_STA_MFP ? "[MFP]" : ""),
 238                         (sta->flags & WLAN_STA_WPS ? "[WPS]" : ""),
 239                         (sta->flags & WLAN_STA_MAYBE_WPS ? "[MAYBE_WPS]" : ""),
 240                         (sta->flags & WLAN_STA_NONERP ? "[NonERP]" : ""),
 241                         sta->capability,
 242                         sta->listen_interval);
 243
 244                 fprintf(f, "  supported_rates=");
 245                 for (i = 0; i < sta->supported_rates_len; i++)
 246                         fprintf(f, "%02x ", sta->supported_rates[i]);
 247                 fprintf(f, "\n");
 248
 249                 fprintf(f,
 250                         "  timeout_next=%s\n",
 251                         (sta->timeout_next == STA_NULLFUNC ? "NULLFUNC POLL" :
 252                          (sta->timeout_next == STA_DISASSOC ? "DISASSOC" :
 253                           "DEAUTH")));
 254
 255                 ieee802_1x_dump_state(f, "  ", sta);
 256         }
 257
 258         buf = os_malloc(4096);
 259         if (buf) {
 260                 int count = radius_client_get_mib(hapd->radius, buf, 4096);
 261                 if (count < 0)
 262                         count = 0;
 263                 else if (count > 4095)
 264                         count = 4095;
 265                 buf[count] = '\0';
 266                 fprintf(f, "%s", buf);
 267
 268                 count = radius_server_get_mib(hapd->radius_srv, buf, 4096);
 269                 if (count < 0)
 270                         count = 0;
 271                 else if (count > 4095)
 272                         count = 4095;
 273                 buf[count] = '\0';
 274                 fprintf(f, "%s", buf);
 275                 os_free(buf);
 276         }
 277         fclose(f);
 278 }
 279
 280
 281 int handle_dump_state_iface(struct hostapd_iface *iface, void *ctx)
 282 {
 283         size_t i;
 284
 285         for (i = 0; i < iface->num_bss; i++)
 286                 hostapd_dump_state(iface->bss[i]);
 287
 288         return 0;
 289 }
 290 #endif /* HOSTAPD_DUMP_STATE */
 291
 292
 293 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
 294                                               char *ifname)
 295 {
 296         int i;
 297
 298         for (i = 0; i < NUM_WEP_KEYS; i++) {
 299                 if (hostapd_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
 300                                     i == 0 ? 1 : 0, NULL, 0, NULL, 0)) {
 301                         wpa_printf(MSG_DEBUG, "Failed to clear default "
 302                                    "encryption keys (ifname=%s keyidx=%d)",
 303                                    ifname, i);
 304                 }
 305         }
 306 #ifdef CONFIG_IEEE80211W
 307         if (hapd->conf->ieee80211w) {
 308                 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
 309                         if (hostapd_set_key(ifname, hapd, WPA_ALG_NONE, NULL,
 310                                             i, i == 0 ? 1 : 0, NULL, 0,
 311                                             NULL, 0)) {
 312                                 wpa_printf(MSG_DEBUG, "Failed to clear "
 313                                            "default mgmt encryption keys "
 314                                            "(ifname=%s keyidx=%d)", ifname, i);
 315                         }
 316                 }
 317         }
 318 #endif /* CONFIG_IEEE80211W */
 319 }
 320
 321
 322 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
 323 {
 324         hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
 325         return 0;
 326 }
 327
 328
 329 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
 330 {
 331         int errors = 0, idx;
 332         struct hostapd_ssid *ssid = &hapd->conf->ssid;
 333
 334         idx = ssid->wep.idx;
 335         if (ssid->wep.default_len &&
 336             hostapd_set_key(hapd->conf->iface,
 337                             hapd, WPA_ALG_WEP, NULL, idx, idx == ssid->wep.idx,
 338                             NULL, 0, ssid->wep.key[idx], ssid->wep.len[idx])) {
 339                 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
 340                 errors++;
 341         }
 342
 343         if (ssid->dyn_vlan_keys) {
 344                 size_t i;
 345                 for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
 346                         const char *ifname;
 347                         struct hostapd_wep_keys *key = ssid->dyn_vlan_keys[i];
 348                         if (key == NULL)
 349                                 continue;
 350                         ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan,
 351                                                             i);
 352                         if (ifname == NULL)
 353                                 continue;
 354
 355                         idx = key->idx;
 356                         if (hostapd_set_key(ifname, hapd, WPA_ALG_WEP, NULL,
 357                                             idx, idx == key->idx, NULL, 0,
 358                                             key->key[idx], key->len[idx])) {
 359                                 wpa_printf(MSG_WARNING, "Could not set "
 360                                            "dynamic VLAN WEP encryption.");
 361                                 errors++;
 362                         }
 363                 }
 364         }
 365
 366         return errors;
 367 }
 368
 369 /**
 370  * hostapd_cleanup - Per-BSS cleanup (deinitialization)
 371  * @hapd: Pointer to BSS data
 372  *
 373  * This function is used to free all per-BSS data structures and resources.
 374  * This gets called in a loop for each BSS between calls to
 375  * hostapd_cleanup_iface_pre() and hostapd_cleanup_iface() when an interface
 376  * is deinitialized. Most of the modules that are initialized in
 377  * hostapd_setup_bss() are deinitialized here.
 378  */
 379 static void hostapd_cleanup(struct hostapd_data *hapd)
 380 {
 381         hostapd_ctrl_iface_deinit(hapd);
 382
 383         os_free(hapd->default_wep_key);
 384         hapd->default_wep_key = NULL;
 385         iapp_deinit(hapd->iapp);
 386         hapd->iapp = NULL;
 387         accounting_deinit(hapd);
 388         rsn_preauth_iface_deinit(hapd);
 389         if (hapd->wpa_auth) {
 390                 wpa_deinit(hapd->wpa_auth);
 391                 hapd->wpa_auth = NULL;
 392
 393                 if (hostapd_set_privacy(hapd, 0)) {
 394                         wpa_printf(MSG_DEBUG, "Could not disable "
 395                                    "PrivacyInvoked for interface %s",
 396                                    hapd->conf->iface);
 397                 }
 398
 399                 if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
 400                         wpa_printf(MSG_DEBUG, "Could not remove generic "
 401                                    "information element from interface %s",
 402                                    hapd->conf->iface);
 403                 }
 404         }
 405         ieee802_1x_deinit(hapd);
 406         vlan_deinit(hapd);
 407         hostapd_acl_deinit(hapd);
 408         radius_client_deinit(hapd->radius);
 409         hapd->radius = NULL;
 410         radius_server_deinit(hapd->radius_srv);
 411         hapd->radius_srv = NULL;
 412
 413 #ifdef CONFIG_IEEE80211R
 414         l2_packet_deinit(hapd->l2);
 415 #endif /* CONFIG_IEEE80211R */
 416
 417         hostapd_deinit_wps(hapd);
 418
 419         hostapd_wireless_event_deinit(hapd);
 420
 421 #ifdef EAP_TLS_FUNCS
 422         if (hapd->ssl_ctx) {
 423                 tls_deinit(hapd->ssl_ctx);
 424                 hapd->ssl_ctx = NULL;
 425         }
 426 #endif /* EAP_TLS_FUNCS */
 427
 428 #ifdef EAP_SERVER
 429         if (hapd->eap_sim_db_priv) {
 430                 eap_sim_db_deinit(hapd->eap_sim_db_priv);
 431                 hapd->eap_sim_db_priv = NULL;
 432         }
 433 #endif /* EAP_SERVER */
 434
 435         if (hapd->interface_added &&
 436             hostapd_bss_remove(hapd, hapd->conf->iface)) {
 437                 wpa_printf(MSG_WARNING, "Failed to remove BSS interface %s",
 438                            hapd->conf->iface);
 439         }
 440 }
 441
 442
 443 /**
 444  * hostapd_cleanup_iface_pre - Preliminary per-interface cleanup
 445  * @iface: Pointer to interface data
 446  *
 447  * This function is called before per-BSS data structures are deinitialized
 448  * with hostapd_cleanup().
 449  */
 450 static void hostapd_cleanup_iface_pre(struct hostapd_iface *iface)
 451 {
 452 }
 453
 454
 455 /**
 456  * hostapd_cleanup_iface - Complete per-interface cleanup
 457  * @iface: Pointer to interface data
 458  *
 459  * This function is called after per-BSS data structures are deinitialized
 460  * with hostapd_cleanup().
 461  */
 462 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
 463 {
 464         hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
 465         iface->hw_features = NULL;
 466         os_free(iface->current_rates);
 467         iface->current_rates = NULL;
 468         ap_list_deinit(iface);
 469         hostapd_config_free(iface->conf);
 470         iface->conf = NULL;
 471
 472         os_free(iface->config_fname);
 473         os_free(iface->bss);
 474         os_free(iface);
 475 }
 476
 477
 478 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
 479 {
 480         int i;
 481
 482         hostapd_broadcast_wep_set(hapd);
 483
 484         if (hapd->conf->ssid.wep.default_len)
 485                 return 0;
 486
 487         for (i = 0; i < 4; i++) {
 488                 if (hapd->conf->ssid.wep.key[i] &&
 489                     hostapd_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
 490                                     i == hapd->conf->ssid.wep.idx, NULL, 0,
 491                                     hapd->conf->ssid.wep.key[i],
 492                                     hapd->conf->ssid.wep.len[i])) {
 493                         wpa_printf(MSG_WARNING, "Could not set WEP "
 494                                    "encryption.");
 495                         return -1;
 496                 }
 497                 if (hapd->conf->ssid.wep.key[i] &&
 498                     i == hapd->conf->ssid.wep.idx)
 499                         hostapd_set_privacy(hapd, 1);
 500         }
 501
 502         return 0;
 503 }
 504
 505
 506 static int hostapd_flush_old_stations(struct hostapd_data *hapd)
 507 {
 508         int ret = 0;
 509
 510         if (hostapd_drv_none(hapd))
 511                 return 0;
 512
 513         wpa_printf(MSG_DEBUG, "Flushing old station entries");
 514         if (hostapd_flush(hapd)) {
 515                 wpa_printf(MSG_WARNING, "Could not connect to kernel driver.");
 516                 ret = -1;
 517         }
 518         wpa_printf(MSG_DEBUG, "Deauthenticate all stations");
 519
 520         /* New Prism2.5/3 STA firmware versions seem to have issues with this
 521          * broadcast deauth frame. This gets the firmware in odd state where
 522          * nothing works correctly, so let's skip sending this for the hostap
 523          * driver. */
 524         if (hapd->driver && os_strcmp(hapd->driver->name, "hostap") != 0) {
 525                 u8 addr[ETH_ALEN];
 526                 os_memset(addr, 0xff, ETH_ALEN);
 527                 hostapd_sta_deauth(hapd, addr,
 528                                    WLAN_REASON_PREV_AUTH_NOT_VALID);
 529         }
 530
 531         return ret;
 532 }
 533
 534
 535 static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
 536                                     logger_level level, const char *txt)
 537 {
 538 #ifndef CONFIG_NO_HOSTAPD_LOGGER
 539         struct hostapd_data *hapd = ctx;
 540         int hlevel;
 541
 542         switch (level) {
 543         case LOGGER_WARNING:
 544                 hlevel = HOSTAPD_LEVEL_WARNING;
 545                 break;
 546         case LOGGER_INFO:
 547                 hlevel = HOSTAPD_LEVEL_INFO;
 548                 break;
 549         case LOGGER_DEBUG:
 550         default:
 551                 hlevel = HOSTAPD_LEVEL_DEBUG;
 552                 break;
 553         }
 554
 555         hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
 556 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
 557 }
 558
 559
 560 static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
 561                                         u16 reason)
 562 {
 563         struct hostapd_data *hapd = ctx;
 564         struct sta_info *sta;
 565
 566         wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
 567                    "STA " MACSTR " reason %d",
 568                    __func__, MAC2STR(addr), reason);
 569
 570         sta = ap_get_sta(hapd, addr);
 571         hostapd_sta_deauth(hapd, addr, reason);
 572         if (sta == NULL)
 573                 return;
 574         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_AUTHORIZED);
 575         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 576         eloop_register_timeout(0, 0, ap_handle_timer, hapd, sta);
 577         sta->timeout_next = STA_REMOVE;
 578 }
 579
 580
 581 static void hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
 582 {
 583         struct hostapd_data *hapd = ctx;
 584         michael_mic_failure(hapd, addr, 0);
 585 }
 586
 587
 588 static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
 589                                        wpa_eapol_variable var, int value)
 590 {
 591         struct hostapd_data *hapd = ctx;
 592         struct sta_info *sta = ap_get_sta(hapd, addr);
 593         if (sta == NULL)
 594                 return;
 595         switch (var) {
 596         case WPA_EAPOL_portEnabled:
 597                 ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
 598                 break;
 599         case WPA_EAPOL_portValid:
 600                 ieee802_1x_notify_port_valid(sta->eapol_sm, value);
 601                 break;
 602         case WPA_EAPOL_authorized:
 603                 ieee802_1x_set_sta_authorized(hapd, sta, value);
 604                 break;
 605         case WPA_EAPOL_portControl_Auto:
 606                 if (sta->eapol_sm)
 607                         sta->eapol_sm->portControl = Auto;
 608                 break;
 609         case WPA_EAPOL_keyRun:
 610                 if (sta->eapol_sm)
 611                         sta->eapol_sm->keyRun = value ? TRUE : FALSE;
 612                 break;
 613         case WPA_EAPOL_keyAvailable:
 614                 if (sta->eapol_sm)
 615                         sta->eapol_sm->eap_if->eapKeyAvailable =
 616                                 value ? TRUE : FALSE;
 617                 break;
 618         case WPA_EAPOL_keyDone:
 619                 if (sta->eapol_sm)
 620                         sta->eapol_sm->keyDone = value ? TRUE : FALSE;
 621                 break;
 622         case WPA_EAPOL_inc_EapolFramesTx:
 623                 if (sta->eapol_sm)
 624                         sta->eapol_sm->dot1xAuthEapolFramesTx++;
 625                 break;
 626         }
 627 }
 628
 629
 630 static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
 631                                       wpa_eapol_variable var)
 632 {
 633         struct hostapd_data *hapd = ctx;
 634         struct sta_info *sta = ap_get_sta(hapd, addr);
 635         if (sta == NULL || sta->eapol_sm == NULL)
 636                 return -1;
 637         switch (var) {
 638         case WPA_EAPOL_keyRun:
 639                 return sta->eapol_sm->keyRun;
 640         case WPA_EAPOL_keyAvailable:
 641                 return sta->eapol_sm->eap_if->eapKeyAvailable;
 642         default:
 643                 return -1;
 644         }
 645 }
 646
 647
 648 static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
 649                                            const u8 *prev_psk)
 650 {
 651         struct hostapd_data *hapd = ctx;
 652         return hostapd_get_psk(hapd->conf, addr, prev_psk);
 653 }
 654
 655
 656 static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
 657                                     size_t *len)
 658 {
 659         struct hostapd_data *hapd = ctx;
 660         const u8 *key;
 661         size_t keylen;
 662         struct sta_info *sta;
 663
 664         sta = ap_get_sta(hapd, addr);
 665         if (sta == NULL)
 666                 return -1;
 667
 668         key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
 669         if (key == NULL)
 670                 return -1;
 671
 672         if (keylen > *len)
 673                 keylen = *len;
 674         os_memcpy(msk, key, keylen);
 675         *len = keylen;
 676
 677         return 0;
 678 }
 679
 680
 681 static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, wpa_alg alg,
 682                                     const u8 *addr, int idx, u8 *key,
 683                                     size_t key_len)
 684 {
 685         struct hostapd_data *hapd = ctx;
 686         const char *ifname = hapd->conf->iface;
 687
 688         if (vlan_id > 0) {
 689                 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
 690                 if (ifname == NULL)
 691                         return -1;
 692         }
 693
 694         return hostapd_set_key(ifname, hapd, alg, addr, idx, 1, NULL, 0,
 695                                key, key_len);
 696 }
 697
 698
 699 static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
 700                                        u8 *seq)
 701 {
 702         struct hostapd_data *hapd = ctx;
 703         return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
 704 }
 705
 706
 707 static int hostapd_wpa_auth_get_seqnum_igtk(void *ctx, const u8 *addr, int idx,
 708                                             u8 *seq)
 709 {
 710         struct hostapd_data *hapd = ctx;
 711         return hostapd_get_seqnum_igtk(hapd->conf->iface, hapd, addr, idx,
 712                                        seq);
 713 }
 714
 715
 716 static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
 717                                        const u8 *data, size_t data_len,
 718                                        int encrypt)
 719 {
 720         struct hostapd_data *hapd = ctx;
 721         return hostapd_send_eapol(hapd, addr, data, data_len, encrypt);
 722 }
 723
 724
 725 static int hostapd_wpa_auth_for_each_sta(
 726         void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
 727         void *cb_ctx)
 728 {
 729         struct hostapd_data *hapd = ctx;
 730         struct sta_info *sta;
 731
 732         for (sta = hapd->sta_list; sta; sta = sta->next) {
 733                 if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
 734                         return 1;
 735         }
 736         return 0;
 737 }
 738
 739
 740 struct wpa_auth_iface_iter_data {
 741         int (*cb)(struct wpa_authenticator *sm, void *ctx);
 742         void *cb_ctx;
 743 };
 744
 745 static int wpa_auth_iface_iter(struct hostapd_iface *iface, void *ctx)
 746 {
 747         struct wpa_auth_iface_iter_data *data = ctx;
 748         size_t i;
 749         for (i = 0; i < iface->num_bss; i++) {
 750                 if (data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
 751                         return 1;
 752         }
 753         return 0;
 754 }
 755
 756
 757 static int hostapd_wpa_auth_for_each_auth(
 758         void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
 759         void *cb_ctx)
 760 {
 761         struct wpa_auth_iface_iter_data data;
 762         data.cb = cb;
 763         data.cb_ctx = cb_ctx;
 764         return hostapd_for_each_interface(wpa_auth_iface_iter, &data);
 765 }
 766
 767
 768 static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
 769                                        const u8 *data, size_t data_len)
 770 {
 771         struct hostapd_data *hapd = ctx;
 772
 773         if (hapd->driver && hapd->driver->send_ether)
 774                 return hapd->driver->send_ether(hapd->drv_priv, dst,
 775                                                 hapd->own_addr, proto,
 776                                                 data, data_len);
 777         if (hapd->l2 == NULL)
 778                 return -1;
 779         return l2_packet_send(hapd->l2, dst, proto, data, data_len);
 780 }
 781
 782
 783 #ifdef CONFIG_IEEE80211R
 784
 785 static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
 786                                            const u8 *data, size_t data_len)
 787 {
 788         struct hostapd_data *hapd = ctx;
 789         int res;
 790         struct ieee80211_mgmt *m;
 791         size_t mlen;
 792         struct sta_info *sta;
 793
 794         sta = ap_get_sta(hapd, dst);
 795         if (sta == NULL || sta->wpa_sm == NULL)
 796                 return -1;
 797
 798         m = os_zalloc(sizeof(*m) + data_len);
 799         if (m == NULL)
 800                 return -1;
 801         mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
 802         m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 803                                         WLAN_FC_STYPE_ACTION);
 804         os_memcpy(m->da, dst, ETH_ALEN);
 805         os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
 806         os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
 807         os_memcpy(&m->u, data, data_len);
 808
 809         res = hostapd_send_mgmt_frame(hapd, (u8 *) m, mlen, 0);
 810         os_free(m);
 811         return res;
 812 }
 813
 814
 815 static struct wpa_state_machine *
 816 hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
 817 {
 818         struct hostapd_data *hapd = ctx;
 819         struct sta_info *sta;
 820
 821         sta = ap_sta_add(hapd, sta_addr);
 822         if (sta == NULL)
 823                 return NULL;
 824         if (sta->wpa_sm)
 825                 return sta->wpa_sm;
 826
 827         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
 828         if (sta->wpa_sm == NULL) {
 829                 ap_free_sta(hapd, sta);
 830                 return NULL;
 831         }
 832         sta->auth_alg = WLAN_AUTH_FT;
 833
 834         return sta->wpa_sm;
 835 }
 836
 837
 838 static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
 839                                 size_t len)
 840 {
 841         struct hostapd_data *hapd = ctx;
 842         wpa_ft_rrb_rx(hapd->wpa_auth, src_addr, buf, len);
 843 }
 844
 845 #endif /* CONFIG_IEEE80211R */
 846
 847
 848 /**
 849  * hostapd_validate_bssid_configuration - Validate BSSID configuration
 850  * @iface: Pointer to interface data
 851  * Returns: 0 on success, -1 on failure
 852  *
 853  * This function is used to validate that the configured BSSIDs are valid.
 854  */
 855 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
 856 {
 857         u8 mask[ETH_ALEN] = { 0 };
 858         struct hostapd_data *hapd = iface->bss[0];
 859         unsigned int i = iface->conf->num_bss, bits = 0, j;
 860         int res;
 861         int auto_addr = 0;
 862
 863         if (hostapd_drv_none(hapd))
 864                 return 0;
 865
 866         /* Generate BSSID mask that is large enough to cover the BSSIDs. */
 867
 868         /* Determine the bits necessary to cover the number of BSSIDs. */
 869         for (i--; i; i >>= 1)
 870                 bits++;
 871
 872         /* Determine the bits necessary to any configured BSSIDs,
 873            if they are higher than the number of BSSIDs. */
 874         for (j = 0; j < iface->conf->num_bss; j++) {
 875                 if (hostapd_mac_comp_empty(iface->conf->bss[j].bssid) == 0) {
 876                         if (j)
 877                                 auto_addr++;
 878                         continue;
 879                 }
 880
 881                 for (i = 0; i < ETH_ALEN; i++) {
 882                         mask[i] |=
 883                                 iface->conf->bss[j].bssid[i] ^
 884                                 hapd->own_addr[i];
 885                 }
 886         }
 887
 888         if (!auto_addr)
 889                 goto skip_mask_ext;
 890
 891         for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
 892                 ;
 893         j = 0;
 894         if (i < ETH_ALEN) {
 895                 j = (5 - i) * 8;
 896
 897                 while (mask[i] != 0) {
 898                         mask[i] >>= 1;
 899                         j++;
 900                 }
 901         }
 902
 903         if (bits < j)
 904                 bits = j;
 905
 906         if (bits > 40) {
 907                 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
 908                            bits);
 909                 return -1;
 910         }
 911
 912         os_memset(mask, 0xff, ETH_ALEN);
 913         j = bits / 8;
 914         for (i = 5; i > 5 - j; i--)
 915                 mask[i] = 0;
 916         j = bits % 8;
 917         while (j--)
 918                 mask[i] <<= 1;
 919
 920 skip_mask_ext:
 921         wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
 922                    (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
 923
 924         res = hostapd_valid_bss_mask(hapd, hapd->own_addr, mask);
 925         if (res == 0)
 926                 return 0;
 927
 928         if (res < 0) {
 929                 wpa_printf(MSG_ERROR, "Driver did not accept BSSID mask "
 930                            MACSTR " for start address " MACSTR ".",
 931                            MAC2STR(mask), MAC2STR(hapd->own_addr));
 932                 return -1;
 933         }
 934
 935         if (!auto_addr)
 936                 return 0;
 937
 938         for (i = 0; i < ETH_ALEN; i++) {
 939                 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
 940                         wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
 941                                    " for start address " MACSTR ".",
 942                                    MAC2STR(mask), MAC2STR(hapd->own_addr));
 943                         wpa_printf(MSG_ERROR, "Start address must be the "
 944                                    "first address in the block (i.e., addr "
 945                                    "AND mask == addr).");
 946                         return -1;
 947                 }
 948         }
 949
 950         return 0;
 951 }
 952
 953
 954 static int mac_in_conf(struct hostapd_config *conf, const void *a)
 955 {
 956         size_t i;
 957
 958         for (i = 0; i < conf->num_bss; i++) {
 959                 if (hostapd_mac_comp(conf->bss[i].bssid, a) == 0) {
 960                         return 1;
 961                 }
 962         }
 963
 964         return 0;
 965 }
 966
 967
 968 static int hostapd_setup_wpa(struct hostapd_data *hapd)
 969 {
 970         struct wpa_auth_config _conf;
 971         struct wpa_auth_callbacks cb;
 972         const u8 *wpa_ie;
 973         size_t wpa_ie_len;
 974
 975         hostapd_wpa_auth_conf(hapd->conf, &_conf);
 976         os_memset(&cb, 0, sizeof(cb));
 977         cb.ctx = hapd;
 978         cb.logger = hostapd_wpa_auth_logger;
 979         cb.disconnect = hostapd_wpa_auth_disconnect;
 980         cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
 981         cb.set_eapol = hostapd_wpa_auth_set_eapol;
 982         cb.get_eapol = hostapd_wpa_auth_get_eapol;
 983         cb.get_psk = hostapd_wpa_auth_get_psk;
 984         cb.get_msk = hostapd_wpa_auth_get_msk;
 985         cb.set_key = hostapd_wpa_auth_set_key;
 986         cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
 987         cb.get_seqnum_igtk = hostapd_wpa_auth_get_seqnum_igtk;
 988         cb.send_eapol = hostapd_wpa_auth_send_eapol;
 989         cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
 990         cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
 991         cb.send_ether = hostapd_wpa_auth_send_ether;
 992 #ifdef CONFIG_IEEE80211R
 993         cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
 994         cb.add_sta = hostapd_wpa_auth_add_sta;
 995 #endif /* CONFIG_IEEE80211R */
 996         hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
 997         if (hapd->wpa_auth == NULL) {
 998                 wpa_printf(MSG_ERROR, "WPA initialization failed.");
 999                 return -1;
1000         }
1001
1002         if (hostapd_set_privacy(hapd, 1)) {
1003                 wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
1004                            "for interface %s", hapd->conf->iface);
1005                 return -1;
1006         }
1007
1008         wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
1009         if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
1010                 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
1011                            "the kernel driver.");
1012                 return -1;
1013         }
1014
1015         if (rsn_preauth_iface_init(hapd)) {
1016                 wpa_printf(MSG_ERROR, "Initialization of RSN "
1017                            "pre-authentication failed.");
1018                 return -1;
1019         }
1020
1021         return 0;
1022
1023 }
1024
1025
1026 static int hostapd_setup_radius_srv(struct hostapd_data *hapd,
1027                                     struct hostapd_bss_config *conf)
1028 {
1029         struct radius_server_conf srv;
1030         os_memset(&srv, 0, sizeof(srv));
1031         srv.client_file = conf->radius_server_clients;
1032         srv.auth_port = conf->radius_server_auth_port;
1033         srv.conf_ctx = conf;
1034         srv.eap_sim_db_priv = hapd->eap_sim_db_priv;
1035         srv.ssl_ctx = hapd->ssl_ctx;
1036         srv.pac_opaque_encr_key = conf->pac_opaque_encr_key;
1037         srv.eap_fast_a_id = conf->eap_fast_a_id;
1038         srv.eap_fast_a_id_len = conf->eap_fast_a_id_len;
1039         srv.eap_fast_a_id_info = conf->eap_fast_a_id_info;
1040         srv.eap_fast_prov = conf->eap_fast_prov;
1041         srv.pac_key_lifetime = conf->pac_key_lifetime;
1042         srv.pac_key_refresh_time = conf->pac_key_refresh_time;
1043         srv.eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
1044         srv.tnc = conf->tnc;
1045         srv.wps = hapd->wps;
1046         srv.ipv6 = conf->radius_server_ipv6;
1047         srv.get_eap_user = hostapd_radius_get_eap_user;
1048         srv.eap_req_id_text = conf->eap_req_id_text;
1049         srv.eap_req_id_text_len = conf->eap_req_id_text_len;
1050
1051         hapd->radius_srv = radius_server_init(&srv);
1052         if (hapd->radius_srv == NULL) {
1053                 wpa_printf(MSG_ERROR, "RADIUS server initialization failed.");
1054                 return -1;
1055         }
1056
1057         return 0;
1058 }
1059
1060
1061 /**
1062  * hostapd_setup_bss - Per-BSS setup (initialization)
1063  * @hapd: Pointer to BSS data
1064  * @first: Whether this BSS is the first BSS of an interface
1065  *
1066  * This function is used to initialize all per-BSS data structures and
1067  * resources. This gets called in a loop for each BSS when an interface is
1068  * initialized. Most of the modules that are initialized here will be
1069  * deinitialized in hostapd_cleanup().
1070  */
1071 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
1072 {
1073         struct hostapd_bss_config *conf = hapd->conf;
1074         u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
1075         int ssid_len, set_ssid;
1076
1077         if (!first) {
1078                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) {
1079                         /* Allocate the next available BSSID. */
1080                         do {
1081                                 inc_byte_array(hapd->own_addr, ETH_ALEN);
1082                         } while (mac_in_conf(hapd->iconf, hapd->own_addr));
1083                 } else {
1084                         /* Allocate the configured BSSID. */
1085                         os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
1086
1087                         if (hostapd_mac_comp(hapd->own_addr,
1088                                              hapd->iface->bss[0]->own_addr) ==
1089                             0) {
1090                                 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
1091                                            "BSSID set to the MAC address of "
1092                                            "the radio", hapd->conf->iface);
1093                                 return -1;
1094                         }
1095                 }
1096
1097                 hapd->interface_added = 1;
1098                 if (hostapd_bss_add(hapd->iface->bss[0], hapd->conf->iface,
1099                                     hapd->own_addr)) {
1100                         wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
1101                                    MACSTR ")", MAC2STR(hapd->own_addr));
1102                         return -1;
1103                 }
1104         }
1105
1106         /*
1107          * Fetch the SSID from the system and use it or,
1108          * if one was specified in the config file, verify they
1109          * match.
1110          */
1111         ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
1112         if (ssid_len < 0) {
1113                 wpa_printf(MSG_ERROR, "Could not read SSID from system");
1114                 return -1;
1115         }
1116         if (conf->ssid.ssid_set) {
1117                 /*
1118                  * If SSID is specified in the config file and it differs
1119                  * from what is being used then force installation of the
1120                  * new SSID.
1121                  */
1122                 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
1123                             os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
1124         } else {
1125                 /*
1126                  * No SSID in the config file; just use the one we got
1127                  * from the system.
1128                  */
1129                 set_ssid = 0;
1130                 conf->ssid.ssid_len = ssid_len;
1131                 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
1132                 conf->ssid.ssid[conf->ssid.ssid_len] = '\0';
1133         }
1134
1135         if (!hostapd_drv_none(hapd)) {
1136                 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
1137                            " and ssid '%s'",
1138                            hapd->conf->iface, MAC2STR(hapd->own_addr),
1139                            hapd->conf->ssid.ssid);
1140         }
1141
1142         if (hostapd_setup_wpa_psk(conf)) {
1143                 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
1144                 return -1;
1145         }
1146
1147         /* Set flag for whether SSID is broadcast in beacons */
1148         if (hostapd_set_broadcast_ssid(hapd,
1149                                        !!hapd->conf->ignore_broadcast_ssid)) {
1150                 wpa_printf(MSG_ERROR, "Could not set broadcast SSID flag for "
1151                            "kernel driver");
1152                 return -1;
1153         }
1154
1155         /* Set SSID for the kernel driver (to be used in beacon and probe
1156          * response frames) */
1157         if (set_ssid && hostapd_set_ssid(hapd, (u8 *) conf->ssid.ssid,
1158                                          conf->ssid.ssid_len)) {
1159                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
1160                 return -1;
1161         }
1162
1163         if (wpa_debug_level == MSG_MSGDUMP)
1164                 conf->radius->msg_dumps = 1;
1165         hapd->radius = radius_client_init(hapd, conf->radius);
1166         if (hapd->radius == NULL) {
1167                 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
1168                 return -1;
1169         }
1170
1171         if (hostapd_acl_init(hapd)) {
1172                 wpa_printf(MSG_ERROR, "ACL initialization failed.");
1173                 return -1;
1174         }
1175         if (hostapd_init_wps(hapd, conf))
1176                 return -1;
1177
1178         if (ieee802_1x_init(hapd)) {
1179                 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
1180                 return -1;
1181         }
1182
1183         if (hapd->conf->wpa && hostapd_setup_wpa(hapd))
1184                 return -1;
1185
1186         if (accounting_init(hapd)) {
1187                 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
1188                 return -1;
1189         }
1190
1191         if (hapd->conf->ieee802_11f &&
1192             (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) {
1193                 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
1194                            "failed.");
1195                 return -1;
1196         }
1197
1198         if (hostapd_ctrl_iface_init(hapd)) {
1199                 wpa_printf(MSG_ERROR, "Failed to setup control interface");
1200                 return -1;
1201         }
1202
1203         if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
1204                 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
1205                 return -1;
1206         }
1207
1208 #ifdef CONFIG_IEEE80211R
1209         if (!hostapd_drv_none(hapd)) {
1210                 hapd->l2 = l2_packet_init(hapd->conf->iface, NULL, ETH_P_RRB,
1211                                           hostapd_rrb_receive, hapd, 0);
1212                 if (hapd->l2 == NULL &&
1213                     (hapd->driver == NULL ||
1214                      hapd->driver->send_ether == NULL)) {
1215                         wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1216                                    "interface");
1217                         return -1;
1218                 }
1219         }
1220 #endif /* CONFIG_IEEE80211R */
1221
1222         ieee802_11_set_beacon(hapd);
1223
1224         if (conf->radius_server_clients &&
1225             hostapd_setup_radius_srv(hapd, conf))
1226                 return -1;
1227
1228         return 0;
1229 }
1230
1231
1232 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
1233 {
1234         struct hostapd_data *hapd = iface->bss[0];
1235         int i;
1236         struct hostapd_tx_queue_params *p;
1237
1238         for (i = 0; i < NUM_TX_QUEUES; i++) {
1239                 p = &iface->conf->tx_queue[i];
1240
1241                 if (!p->configured)
1242                         continue;
1243
1244                 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
1245                                                 p->cwmax, p->burst)) {
1246                         wpa_printf(MSG_DEBUG, "Failed to set TX queue "
1247                                    "parameters for queue %d.", i);
1248                         /* Continue anyway */
1249                 }
1250         }
1251 }
1252
1253
1254 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
1255                                        size_t identity_len, int phase2,
1256                                        struct eap_user *user)
1257 {
1258         const struct hostapd_eap_user *eap_user;
1259         int i, count;
1260
1261         eap_user = hostapd_get_eap_user(ctx, identity, identity_len, phase2);
1262         if (eap_user == NULL)
1263                 return -1;
1264
1265         if (user == NULL)
1266                 return 0;
1267
1268         os_memset(user, 0, sizeof(*user));
1269         count = EAP_USER_MAX_METHODS;
1270         if (count > EAP_MAX_METHODS)
1271                 count = EAP_MAX_METHODS;
1272         for (i = 0; i < count; i++) {
1273                 user->methods[i].vendor = eap_user->methods[i].vendor;
1274                 user->methods[i].method = eap_user->methods[i].method;
1275         }
1276
1277         if (eap_user->password) {
1278                 user->password = os_malloc(eap_user->password_len);
1279                 if (user->password == NULL)
1280                         return -1;
1281                 os_memcpy(user->password, eap_user->password,
1282                           eap_user->password_len);
1283                 user->password_len = eap_user->password_len;
1284                 user->password_hash = eap_user->password_hash;
1285         }
1286         user->force_version = eap_user->force_version;
1287         user->ttls_auth = eap_user->ttls_auth;
1288
1289         return 0;
1290 }
1291
1292
1293 static int setup_interface(struct hostapd_iface *iface)
1294 {
1295         struct hostapd_data *hapd = iface->bss[0];
1296         struct hostapd_bss_config *conf = hapd->conf;
1297         size_t i;
1298         char country[4];
1299         u8 *b = conf->bssid;
1300         int freq;
1301         size_t j;
1302         u8 *prev_addr;
1303
1304         /*
1305          * Initialize the driver interface and make sure that all BSSes get
1306          * configured with a pointer to this driver interface.
1307          */
1308         if (b[0] | b[1] | b[2] | b[3] | b[4] | b[5]) {
1309                 hapd->drv_priv = hostapd_driver_init_bssid(hapd, b);
1310         } else {
1311                 hapd->drv_priv = hostapd_driver_init(hapd);
1312         }
1313
1314         if (hapd->drv_priv == NULL) {
1315                 wpa_printf(MSG_ERROR, "%s driver initialization failed.",
1316                            hapd->driver ? hapd->driver->name : "Unknown");
1317                 hapd->driver = NULL;
1318                 return -1;
1319         }
1320         for (i = 0; i < iface->num_bss; i++) {
1321                 iface->bss[i]->driver = hapd->driver;
1322                 iface->bss[i]->drv_priv = hapd->drv_priv;
1323         }
1324
1325         if (hostapd_validate_bssid_configuration(iface))
1326                 return -1;
1327
1328 #ifdef CONFIG_IEEE80211N
1329         SET_2BIT_LE16(&iface->ht_op_mode,
1330                       HT_INFO_OPERATION_MODE_OP_MODE_OFFSET,
1331                       OP_MODE_PURE);
1332 #endif /* CONFIG_IEEE80211N */
1333
1334         if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1335                 os_memcpy(country, hapd->iconf->country, 3);
1336                 country[3] = '\0';
1337                 if (hostapd_set_country(hapd, country) < 0) {
1338                         wpa_printf(MSG_ERROR, "Failed to set country code");
1339                         return -1;
1340                 }
1341         }
1342
1343         if (hapd->iconf->ieee80211d &&
1344             hostapd_set_ieee80211d(hapd, 1) < 0) {
1345                 wpa_printf(MSG_ERROR, "Failed to set ieee80211d (%d)",
1346                            hapd->iconf->ieee80211d);
1347                 return -1;
1348         }
1349
1350         if (hapd->iconf->bridge_packets != INTERNAL_BRIDGE_DO_NOT_CONTROL &&
1351             hostapd_set_internal_bridge(hapd, hapd->iconf->bridge_packets)) {
1352                 wpa_printf(MSG_ERROR, "Failed to set bridge_packets for "
1353                            "kernel driver");
1354                 return -1;
1355         }
1356
1357         /* TODO: merge with hostapd_driver_init() ? */
1358         if (hostapd_wireless_event_init(hapd) < 0)
1359                 return -1;
1360
1361         if (hostapd_get_hw_features(iface)) {
1362                 /* Not all drivers support this yet, so continue without hw
1363                  * feature data. */
1364         } else {
1365                 int ret = hostapd_select_hw_mode(iface);
1366                 if (ret < 0) {
1367                         wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1368                                    "channel. (%d)", ret);
1369                         return -1;
1370                 }
1371         }
1372
1373         hostapd_flush_old_stations(hapd);
1374         hostapd_set_privacy(hapd, 0);
1375
1376         if (hapd->iconf->channel) {
1377                 freq = hostapd_hw_get_freq(hapd, hapd->iconf->channel);
1378                 wpa_printf(MSG_DEBUG, "Mode: %s  Channel: %d  "
1379                            "Frequency: %d MHz",
1380                            hostapd_hw_mode_txt(hapd->iconf->hw_mode),
1381                            hapd->iconf->channel, freq);
1382
1383                 if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, freq,
1384                                      hapd->iconf->ieee80211n,
1385                                      hapd->iconf->secondary_channel)) {
1386                         wpa_printf(MSG_ERROR, "Could not set channel for "
1387                                    "kernel driver");
1388                         return -1;
1389                 }
1390         }
1391
1392         hostapd_broadcast_wep_clear(hapd);
1393         if (hostapd_setup_encryption(hapd->conf->iface, hapd))
1394                 return -1;
1395
1396         hostapd_set_beacon_int(hapd, hapd->iconf->beacon_int);
1397         ieee802_11_set_beacon(hapd);
1398
1399         if (hapd->iconf->rts_threshold > -1 &&
1400             hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1401                 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1402                            "kernel driver");
1403                 return -1;
1404         }
1405
1406         if (hapd->iconf->fragm_threshold > -1 &&
1407             hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1408                 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1409                            "for kernel driver");
1410                 return -1;
1411         }
1412
1413         prev_addr = hapd->own_addr;
1414
1415         for (j = 0; j < iface->num_bss; j++) {
1416                 hapd = iface->bss[j];
1417                 if (j)
1418                         os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1419                 if (hostapd_setup_bss(hapd, j == 0))
1420                         return -1;
1421                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1422                         prev_addr = hapd->own_addr;
1423         }
1424
1425         hostapd_tx_queue_params(iface);
1426
1427         ap_list_init(iface);
1428
1429         if (hostapd_driver_commit(hapd) < 0) {
1430                 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1431                            "configuration", __func__);
1432                 return -1;
1433         }
1434
1435         return 0;
1436 }
1437
1438
1439 /**
1440  * hostapd_setup_interface - Setup of an interface
1441  * @iface: Pointer to interface data.
1442  * Returns: 0 on success, -1 on failure
1443  *
1444  * Initializes the driver interface, validates the configuration,
1445  * and sets driver parameters based on the configuration.
1446  * Flushes old stations, sets the channel, encryption,
1447  * beacons, and WDS links based on the configuration.
1448  */
1449 int hostapd_setup_interface(struct hostapd_iface *iface)
1450 {
1451         int ret;
1452
1453         ret = setup_interface(iface);
1454         if (ret) {
1455                 wpa_printf(MSG_DEBUG, "%s: Unable to setup interface.",
1456                            iface->bss[0]->conf->iface);
1457                 eloop_terminate();
1458                 return -1;
1459         } else if (!hostapd_drv_none(iface->bss[0])) {
1460                 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1461                            iface->bss[0]->conf->iface);
1462         }
1463
1464         return 0;
1465 }
1466
1467
1468 /**
1469  * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1470  * @hapd_iface: Pointer to interface data
1471  * @conf: Pointer to per-interface configuration
1472  * @bss: Pointer to per-BSS configuration for this BSS
1473  * Returns: Pointer to allocated BSS data
1474  *
1475  * This function is used to allocate per-BSS data structure. This data will be
1476  * freed after hostapd_cleanup() is called for it during interface
1477  * deinitialization.
1478  */
1479 static struct hostapd_data *
1480 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1481                        struct hostapd_config *conf,
1482                        struct hostapd_bss_config *bss)
1483 {
1484         struct hostapd_data *hapd;
1485
1486         hapd = os_zalloc(sizeof(*hapd));
1487         if (hapd == NULL)
1488                 return NULL;
1489
1490         hapd->iconf = conf;
1491         hapd->conf = bss;
1492         hapd->iface = hapd_iface;
1493
1494         if (hapd->conf->individual_wep_key_len > 0) {
1495                 /* use key0 in individual key and key1 in broadcast key */
1496                 hapd->default_wep_key_idx = 1;
1497         }
1498
1499 #ifdef EAP_TLS_FUNCS
1500         if (hapd->conf->eap_server &&
1501             (hapd->conf->ca_cert || hapd->conf->server_cert ||
1502              hapd->conf->dh_file)) {
1503                 struct tls_connection_params params;
1504
1505                 hapd->ssl_ctx = tls_init(NULL);
1506                 if (hapd->ssl_ctx == NULL) {
1507                         wpa_printf(MSG_ERROR, "Failed to initialize TLS");
1508                         goto fail;
1509                 }
1510
1511                 os_memset(&params, 0, sizeof(params));
1512                 params.ca_cert = hapd->conf->ca_cert;
1513                 params.client_cert = hapd->conf->server_cert;
1514                 params.private_key = hapd->conf->private_key;
1515                 params.private_key_passwd = hapd->conf->private_key_passwd;
1516                 params.dh_file = hapd->conf->dh_file;
1517
1518                 if (tls_global_set_params(hapd->ssl_ctx, &params)) {
1519                         wpa_printf(MSG_ERROR, "Failed to set TLS parameters");
1520                         goto fail;
1521                 }
1522
1523                 if (tls_global_set_verify(hapd->ssl_ctx,
1524                                           hapd->conf->check_crl)) {
1525                         wpa_printf(MSG_ERROR, "Failed to enable check_crl");
1526                         goto fail;
1527                 }
1528         }
1529 #endif /* EAP_TLS_FUNCS */
1530
1531 #ifdef EAP_SERVER
1532         if (hapd->conf->eap_sim_db) {
1533                 hapd->eap_sim_db_priv =
1534                         eap_sim_db_init(hapd->conf->eap_sim_db,
1535                                         hostapd_sim_db_cb, hapd);
1536                 if (hapd->eap_sim_db_priv == NULL) {
1537                         wpa_printf(MSG_ERROR, "Failed to initialize EAP-SIM "
1538                                    "database interface");
1539                         goto fail;
1540                 }
1541         }
1542 #endif /* EAP_SERVER */
1543
1544         hapd->driver = hapd->iconf->driver;
1545
1546         return hapd;
1547
1548 #if defined(EAP_TLS_FUNCS) || defined(EAP_SERVER)
1549 fail:
1550 #endif
1551         /* TODO: cleanup allocated resources(?) */
1552         os_free(hapd);
1553         return NULL;
1554 }
1555
1556
1557 /**
1558  * hostapd_init - Allocate and initialize per-interface data
1559  * @config_file: Path to the configuration file
1560  * Returns: Pointer to the allocated interface data or %NULL on failure
1561  *
1562  * This function is used to allocate main data structures for per-interface
1563  * data. The allocated data buffer will be freed by calling
1564  * hostapd_cleanup_iface().
1565  */
1566 struct hostapd_iface * hostapd_init(const char *config_file)
1567 {
1568         struct hostapd_iface *hapd_iface = NULL;
1569         struct hostapd_config *conf = NULL;
1570         struct hostapd_data *hapd;
1571         size_t i;
1572
1573         hapd_iface = os_zalloc(sizeof(*hapd_iface));
1574         if (hapd_iface == NULL)
1575                 goto fail;
1576
1577         hapd_iface->config_fname = os_strdup(config_file);
1578         if (hapd_iface->config_fname == NULL)
1579                 goto fail;
1580
1581         conf = hostapd_config_read(hapd_iface->config_fname);
1582         if (conf == NULL)
1583                 goto fail;
1584         hapd_iface->conf = conf;
1585
1586         hapd_iface->num_bss = conf->num_bss;
1587         hapd_iface->bss = os_zalloc(conf->num_bss *
1588                                     sizeof(struct hostapd_data *));
1589         if (hapd_iface->bss == NULL)
1590                 goto fail;
1591
1592         for (i = 0; i < conf->num_bss; i++) {
1593                 hapd = hapd_iface->bss[i] =
1594                         hostapd_alloc_bss_data(hapd_iface, conf,
1595                                                &conf->bss[i]);
1596                 if (hapd == NULL)
1597                         goto fail;
1598         }
1599
1600         return hapd_iface;
1601
1602 fail:
1603         if (conf)
1604                 hostapd_config_free(conf);
1605         if (hapd_iface) {
1606                 for (i = 0; hapd_iface->bss && i < hapd_iface->num_bss; i++) {
1607                         hapd = hapd_iface->bss[i];
1608                         if (hapd && hapd->ssl_ctx)
1609                                 tls_deinit(hapd->ssl_ctx);
1610                 }
1611
1612                 os_free(hapd_iface->config_fname);
1613                 os_free(hapd_iface->bss);
1614                 os_free(hapd_iface);
1615         }
1616         return NULL;
1617 }
1618
1619
1620 void hostapd_interface_deinit(struct hostapd_iface *iface)
1621 {
1622         size_t j;
1623
1624         if (iface == NULL)
1625                 return;
1626
1627         hostapd_cleanup_iface_pre(iface);
1628         for (j = 0; j < iface->num_bss; j++) {
1629                 struct hostapd_data *hapd = iface->bss[j];
1630                 hostapd_free_stas(hapd);
1631                 hostapd_flush_old_stations(hapd);
1632                 hostapd_cleanup(hapd);
1633                 if (j == iface->num_bss - 1 && hapd->driver)
1634                         hostapd_driver_deinit(hapd);
1635         }
1636         for (j = 0; j < iface->num_bss; j++)
1637                 os_free(iface->bss[j]);
1638         hostapd_cleanup_iface(iface);
1639 }