wpa_supplicant/ap.c

   1 /*
   2  * WPA Supplicant - Basic AP mode support routines
   3  * Copyright (c) 2003-2009, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2009, Atheros Communications
   5  *
   6  * This software may be distributed under the terms of the BSD license.
   7  * See README for more details.
   8  */
   9
  10 #include "utils/includes.h"
  11
  12 #include "utils/common.h"
  13 #include "utils/eloop.h"
  14 #include "utils/uuid.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "ap/hostapd.h"
  18 #include "ap/ap_config.h"
  19 #include "ap/ap_drv_ops.h"
  20 #ifdef NEED_AP_MLME
  21 #include "ap/ieee802_11.h"
  22 #endif /* NEED_AP_MLME */
  23 #include "ap/beacon.h"
  24 #include "ap/ieee802_1x.h"
  25 #include "ap/wps_hostapd.h"
  26 #include "ap/ctrl_iface_ap.h"
  27 #include "wps/wps.h"
  28 #include "common/ieee802_11_defs.h"
  29 #include "config_ssid.h"
  30 #include "config.h"
  31 #include "wpa_supplicant_i.h"
  32 #include "driver_i.h"
  33 #include "p2p_supplicant.h"
  34 #include "ap.h"
  35 #include "ap/sta_info.h"
  36 #include "notify.h"
  37
  38
  39 #ifdef CONFIG_WPS
  40 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
  41 #endif /* CONFIG_WPS */
  42
  43
  44 static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
  45                                   struct wpa_ssid *ssid,
  46                                   struct hostapd_config *conf)
  47 {
  48         struct hostapd_bss_config *bss = &conf->bss[0];
  49
  50         conf->driver = wpa_s->driver;
  51
  52         os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
  53
  54         conf->hw_mode = ieee80211_freq_to_chan(ssid->frequency,
  55                                                &conf->channel);
  56         if (conf->hw_mode == NUM_HOSTAPD_MODES) {
  57                 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
  58                            ssid->frequency);
  59                 return -1;
  60         }
  61
  62         /* TODO: enable HT40 if driver supports it;
  63          * drop to 11b if driver does not support 11g */
  64
  65 #ifdef CONFIG_IEEE80211N
  66         /*
  67          * Enable HT20 if the driver supports it, by setting conf->ieee80211n
  68          * and a mask of allowed capabilities within conf->ht_capab.
  69          * Using default config settings for: conf->ht_op_mode_fixed,
  70          * conf->secondary_channel, conf->require_ht
  71          */
  72         if (wpa_s->hw.modes) {
  73                 struct hostapd_hw_modes *mode = NULL;
  74                 int i, no_ht = 0;
  75                 for (i = 0; i < wpa_s->hw.num_modes; i++) {
  76                         if (wpa_s->hw.modes[i].mode == conf->hw_mode) {
  77                                 mode = &wpa_s->hw.modes[i];
  78                                 break;
  79                         }
  80                 }
  81
  82 #ifdef CONFIG_HT_OVERRIDES
  83                 if (ssid->disable_ht) {
  84                         conf->ieee80211n = 0;
  85                         conf->ht_capab = 0;
  86                         no_ht = 1;
  87                 }
  88 #endif /* CONFIG_HT_OVERRIDES */
  89
  90                 if (!no_ht && mode && mode->ht_capab) {
  91                         conf->ieee80211n = 1;
  92 #ifdef CONFIG_P2P
  93                         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211A &&
  94                             (mode->ht_capab &
  95                              HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) &&
  96                             ssid->ht40)
  97                                 conf->secondary_channel =
  98                                         wpas_p2p_get_ht40_mode(wpa_s, mode,
  99                                                                conf->channel);
 100                         if (conf->secondary_channel)
 101                                 conf->ht_capab |=
 102                                         HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET;
 103 #endif /* CONFIG_P2P */
 104
 105                         /*
 106                          * white-list capabilities that won't cause issues
 107                          * to connecting stations, while leaving the current
 108                          * capabilities intact (currently disabled SMPS).
 109                          */
 110                         conf->ht_capab |= mode->ht_capab &
 111                                 (HT_CAP_INFO_GREEN_FIELD |
 112                                  HT_CAP_INFO_SHORT_GI20MHZ |
 113                                  HT_CAP_INFO_SHORT_GI40MHZ |
 114                                  HT_CAP_INFO_RX_STBC_MASK |
 115                                  HT_CAP_INFO_MAX_AMSDU_SIZE);
 116                 }
 117         }
 118 #endif /* CONFIG_IEEE80211N */
 119
 120 #ifdef CONFIG_P2P
 121         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G &&
 122             (ssid->mode == WPAS_MODE_P2P_GO ||
 123              ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)) {
 124                 /* Remove 802.11b rates from supported and basic rate sets */
 125                 int *list = os_malloc(4 * sizeof(int));
 126                 if (list) {
 127                         list[0] = 60;
 128                         list[1] = 120;
 129                         list[2] = 240;
 130                         list[3] = -1;
 131                 }
 132                 conf->basic_rates = list;
 133
 134                 list = os_malloc(9 * sizeof(int));
 135                 if (list) {
 136                         list[0] = 60;
 137                         list[1] = 90;
 138                         list[2] = 120;
 139                         list[3] = 180;
 140                         list[4] = 240;
 141                         list[5] = 360;
 142                         list[6] = 480;
 143                         list[7] = 540;
 144                         list[8] = -1;
 145                 }
 146                 conf->supported_rates = list;
 147         }
 148
 149         bss->isolate = !wpa_s->conf->p2p_intra_bss;
 150 #endif /* CONFIG_P2P */
 151
 152         if (ssid->ssid_len == 0) {
 153                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 154                 return -1;
 155         }
 156         os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
 157         bss->ssid.ssid_len = ssid->ssid_len;
 158         bss->ssid.ssid_set = 1;
 159
 160         bss->ignore_broadcast_ssid = ssid->ignore_broadcast_ssid;
 161
 162         if (ssid->auth_alg)
 163                 bss->auth_algs = ssid->auth_alg;
 164
 165         if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
 166                 bss->wpa = ssid->proto;
 167         bss->wpa_key_mgmt = ssid->key_mgmt;
 168         bss->wpa_pairwise = ssid->pairwise_cipher;
 169         if (ssid->psk_set) {
 170                 os_free(bss->ssid.wpa_psk);
 171                 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
 172                 if (bss->ssid.wpa_psk == NULL)
 173                         return -1;
 174                 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
 175                 bss->ssid.wpa_psk->group = 1;
 176         } else if (ssid->passphrase) {
 177                 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
 178         } else if (ssid->wep_key_len[0] || ssid->wep_key_len[1] ||
 179                    ssid->wep_key_len[2] || ssid->wep_key_len[3]) {
 180                 struct hostapd_wep_keys *wep = &bss->ssid.wep;
 181                 int i;
 182                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 183                         if (ssid->wep_key_len[i] == 0)
 184                                 continue;
 185                         wep->key[i] = os_malloc(ssid->wep_key_len[i]);
 186                         if (wep->key[i] == NULL)
 187                                 return -1;
 188                         os_memcpy(wep->key[i], ssid->wep_key[i],
 189                                   ssid->wep_key_len[i]);
 190                         wep->len[i] = ssid->wep_key_len[i];
 191                 }
 192                 wep->idx = ssid->wep_tx_keyidx;
 193                 wep->keys_set = 1;
 194         }
 195
 196         if (ssid->ap_max_inactivity)
 197                 bss->ap_max_inactivity = ssid->ap_max_inactivity;
 198
 199         if (ssid->dtim_period)
 200                 bss->dtim_period = ssid->dtim_period;
 201         else if (wpa_s->conf->dtim_period)
 202                 bss->dtim_period = wpa_s->conf->dtim_period;
 203
 204         if (ssid->beacon_int)
 205                 conf->beacon_int = ssid->beacon_int;
 206         else if (wpa_s->conf->beacon_int)
 207                 conf->beacon_int = wpa_s->conf->beacon_int;
 208
 209         if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
 210                 bss->rsn_pairwise = bss->wpa_pairwise;
 211         bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise,
 212                                                     bss->rsn_pairwise);
 213
 214         if (bss->wpa && bss->ieee802_1x)
 215                 bss->ssid.security_policy = SECURITY_WPA;
 216         else if (bss->wpa)
 217                 bss->ssid.security_policy = SECURITY_WPA_PSK;
 218         else if (bss->ieee802_1x) {
 219                 int cipher = WPA_CIPHER_NONE;
 220                 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
 221                 bss->ssid.wep.default_len = bss->default_wep_key_len;
 222                 if (bss->default_wep_key_len)
 223                         cipher = bss->default_wep_key_len >= 13 ?
 224                                 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
 225                 bss->wpa_group = cipher;
 226                 bss->wpa_pairwise = cipher;
 227                 bss->rsn_pairwise = cipher;
 228         } else if (bss->ssid.wep.keys_set) {
 229                 int cipher = WPA_CIPHER_WEP40;
 230                 if (bss->ssid.wep.len[0] >= 13)
 231                         cipher = WPA_CIPHER_WEP104;
 232                 bss->ssid.security_policy = SECURITY_STATIC_WEP;
 233                 bss->wpa_group = cipher;
 234                 bss->wpa_pairwise = cipher;
 235                 bss->rsn_pairwise = cipher;
 236         } else {
 237                 bss->ssid.security_policy = SECURITY_PLAINTEXT;
 238                 bss->wpa_group = WPA_CIPHER_NONE;
 239                 bss->wpa_pairwise = WPA_CIPHER_NONE;
 240                 bss->rsn_pairwise = WPA_CIPHER_NONE;
 241         }
 242
 243         if (bss->wpa_group_rekey < 86400 && (bss->wpa & 2) &&
 244             (bss->wpa_group == WPA_CIPHER_CCMP ||
 245              bss->wpa_group == WPA_CIPHER_GCMP)) {
 246                 /*
 247                  * Strong ciphers do not need frequent rekeying, so increase
 248                  * the default GTK rekeying period to 24 hours.
 249                  */
 250                 bss->wpa_group_rekey = 86400;
 251         }
 252
 253 #ifdef CONFIG_WPS
 254         /*
 255          * Enable WPS by default for open and WPA/WPA2-Personal network, but
 256          * require user interaction to actually use it. Only the internal
 257          * Registrar is supported.
 258          */
 259         if (bss->ssid.security_policy != SECURITY_WPA_PSK &&
 260             bss->ssid.security_policy != SECURITY_PLAINTEXT)
 261                 goto no_wps;
 262 #ifdef CONFIG_WPS2
 263         if (bss->ssid.security_policy == SECURITY_WPA_PSK &&
 264             (!(bss->rsn_pairwise & WPA_CIPHER_CCMP) || !(bss->wpa & 2)))
 265                 goto no_wps; /* WPS2 does not allow WPA/TKIP-only
 266                               * configuration */
 267 #endif /* CONFIG_WPS2 */
 268         bss->eap_server = 1;
 269
 270         if (!ssid->ignore_broadcast_ssid)
 271                 bss->wps_state = 2;
 272
 273         bss->ap_setup_locked = 2;
 274         if (wpa_s->conf->config_methods)
 275                 bss->config_methods = os_strdup(wpa_s->conf->config_methods);
 276         os_memcpy(bss->device_type, wpa_s->conf->device_type,
 277                   WPS_DEV_TYPE_LEN);
 278         if (wpa_s->conf->device_name) {
 279                 bss->device_name = os_strdup(wpa_s->conf->device_name);
 280                 bss->friendly_name = os_strdup(wpa_s->conf->device_name);
 281         }
 282         if (wpa_s->conf->manufacturer)
 283                 bss->manufacturer = os_strdup(wpa_s->conf->manufacturer);
 284         if (wpa_s->conf->model_name)
 285                 bss->model_name = os_strdup(wpa_s->conf->model_name);
 286         if (wpa_s->conf->model_number)
 287                 bss->model_number = os_strdup(wpa_s->conf->model_number);
 288         if (wpa_s->conf->serial_number)
 289                 bss->serial_number = os_strdup(wpa_s->conf->serial_number);
 290         if (is_nil_uuid(wpa_s->conf->uuid))
 291                 os_memcpy(bss->uuid, wpa_s->wps->uuid, WPS_UUID_LEN);
 292         else
 293                 os_memcpy(bss->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
 294         os_memcpy(bss->os_version, wpa_s->conf->os_version, 4);
 295         bss->pbc_in_m1 = wpa_s->conf->pbc_in_m1;
 296 no_wps:
 297 #endif /* CONFIG_WPS */
 298
 299         if (wpa_s->max_stations &&
 300             wpa_s->max_stations < wpa_s->conf->max_num_sta)
 301                 bss->max_num_sta = wpa_s->max_stations;
 302         else
 303                 bss->max_num_sta = wpa_s->conf->max_num_sta;
 304
 305         bss->disassoc_low_ack = wpa_s->conf->disassoc_low_ack;
 306
 307         if (wpa_s->conf->ap_vendor_elements) {
 308                 bss->vendor_elements =
 309                         wpabuf_dup(wpa_s->conf->ap_vendor_elements);
 310         }
 311
 312         return 0;
 313 }
 314
 315
 316 static void ap_public_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 317 {
 318 #ifdef CONFIG_P2P
 319         struct wpa_supplicant *wpa_s = ctx;
 320         const struct ieee80211_mgmt *mgmt;
 321         size_t hdr_len;
 322
 323         mgmt = (const struct ieee80211_mgmt *) buf;
 324         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 325         if (hdr_len > len)
 326                 return;
 327         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 328                            mgmt->u.action.category,
 329                            &mgmt->u.action.u.vs_public_action.action,
 330                            len - hdr_len, freq);
 331 #endif /* CONFIG_P2P */
 332 }
 333
 334
 335 static void ap_wps_event_cb(void *ctx, enum wps_event event,
 336                             union wps_event_data *data)
 337 {
 338 #ifdef CONFIG_P2P
 339         struct wpa_supplicant *wpa_s = ctx;
 340
 341         if (event == WPS_EV_FAIL) {
 342                 struct wps_event_fail *fail = &data->fail;
 343
 344                 if (wpa_s->parent && wpa_s->parent != wpa_s &&
 345                     wpa_s == wpa_s->global->p2p_group_formation) {
 346                         /*
 347                          * src/ap/wps_hostapd.c has already sent this on the
 348                          * main interface, so only send on the parent interface
 349                          * here if needed.
 350                          */
 351                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 352                                 "msg=%d config_error=%d",
 353                                 fail->msg, fail->config_error);
 354                 }
 355                 wpas_p2p_wps_failed(wpa_s, fail);
 356         }
 357 #endif /* CONFIG_P2P */
 358 }
 359
 360
 361 static void ap_sta_authorized_cb(void *ctx, const u8 *mac_addr,
 362                                  int authorized, const u8 *p2p_dev_addr)
 363 {
 364         wpas_notify_sta_authorized(ctx, mac_addr, authorized, p2p_dev_addr);
 365 }
 366
 367
 368 static int ap_vendor_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 369 {
 370 #ifdef CONFIG_P2P
 371         struct wpa_supplicant *wpa_s = ctx;
 372         const struct ieee80211_mgmt *mgmt;
 373         size_t hdr_len;
 374
 375         mgmt = (const struct ieee80211_mgmt *) buf;
 376         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 377         if (hdr_len > len)
 378                 return -1;
 379         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 380                            mgmt->u.action.category,
 381                            &mgmt->u.action.u.vs_public_action.action,
 382                            len - hdr_len, freq);
 383 #endif /* CONFIG_P2P */
 384         return 0;
 385 }
 386
 387
 388 static int ap_probe_req_rx(void *ctx, const u8 *sa, const u8 *da,
 389                            const u8 *bssid, const u8 *ie, size_t ie_len,
 390                            int ssi_signal)
 391 {
 392 #ifdef CONFIG_P2P
 393         struct wpa_supplicant *wpa_s = ctx;
 394         return wpas_p2p_probe_req_rx(wpa_s, sa, da, bssid, ie, ie_len,
 395                                      ssi_signal);
 396 #else /* CONFIG_P2P */
 397         return 0;
 398 #endif /* CONFIG_P2P */
 399 }
 400
 401
 402 static void ap_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 403                                   const u8 *uuid_e)
 404 {
 405 #ifdef CONFIG_P2P
 406         struct wpa_supplicant *wpa_s = ctx;
 407         wpas_p2p_wps_success(wpa_s, mac_addr, 1);
 408 #endif /* CONFIG_P2P */
 409 }
 410
 411
 412 static void wpas_ap_configured_cb(void *ctx)
 413 {
 414         struct wpa_supplicant *wpa_s = ctx;
 415
 416         wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 417
 418         if (wpa_s->ap_configured_cb)
 419                 wpa_s->ap_configured_cb(wpa_s->ap_configured_cb_ctx,
 420                                         wpa_s->ap_configured_cb_data);
 421 }
 422
 423
 424 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
 425                              struct wpa_ssid *ssid)
 426 {
 427         struct wpa_driver_associate_params params;
 428         struct hostapd_iface *hapd_iface;
 429         struct hostapd_config *conf;
 430         size_t i;
 431
 432         if (ssid->ssid == NULL || ssid->ssid_len == 0) {
 433                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 434                 return -1;
 435         }
 436
 437         wpa_supplicant_ap_deinit(wpa_s);
 438
 439         wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
 440                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 441
 442         os_memset(&params, 0, sizeof(params));
 443         params.ssid = ssid->ssid;
 444         params.ssid_len = ssid->ssid_len;
 445         switch (ssid->mode) {
 446         case WPAS_MODE_INFRA:
 447                 params.mode = IEEE80211_MODE_INFRA;
 448                 break;
 449         case WPAS_MODE_IBSS:
 450                 params.mode = IEEE80211_MODE_IBSS;
 451                 break;
 452         case WPAS_MODE_AP:
 453         case WPAS_MODE_P2P_GO:
 454         case WPAS_MODE_P2P_GROUP_FORMATION:
 455                 params.mode = IEEE80211_MODE_AP;
 456                 break;
 457         }
 458         if (ssid->frequency == 0)
 459                 ssid->frequency = 2462; /* default channel 11 */
 460         params.freq = ssid->frequency;
 461
 462         params.wpa_proto = ssid->proto;
 463         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK)
 464                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
 465         else
 466                 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
 467         params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
 468
 469         wpa_s->pairwise_cipher = wpa_pick_pairwise_cipher(ssid->pairwise_cipher,
 470                                                           1);
 471         if (wpa_s->pairwise_cipher < 0) {
 472                 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
 473                            "cipher.");
 474                 return -1;
 475         }
 476         params.pairwise_suite =
 477                 wpa_cipher_to_suite_driver(wpa_s->pairwise_cipher);
 478         params.group_suite = params.pairwise_suite;
 479
 480 #ifdef CONFIG_P2P
 481         if (ssid->mode == WPAS_MODE_P2P_GO ||
 482             ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 483                 params.p2p = 1;
 484 #endif /* CONFIG_P2P */
 485
 486         if (wpa_s->parent->set_ap_uapsd)
 487                 params.uapsd = wpa_s->parent->ap_uapsd;
 488         else
 489                 params.uapsd = -1;
 490
 491         if (wpa_drv_associate(wpa_s, &params) < 0) {
 492                 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
 493 #ifdef CONFIG_P2P
 494                 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION &&
 495                     wpa_s->global->p2p_group_formation == wpa_s)
 496                         wpas_p2p_group_formation_failed(wpa_s->parent);
 497 #endif /* CONFIG_P2P */
 498                 return -1;
 499         }
 500
 501         wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
 502         if (hapd_iface == NULL)
 503                 return -1;
 504         hapd_iface->owner = wpa_s;
 505         hapd_iface->drv_flags = wpa_s->drv_flags;
 506         hapd_iface->probe_resp_offloads = wpa_s->probe_resp_offloads;
 507         hapd_iface->extended_capa = wpa_s->extended_capa;
 508         hapd_iface->extended_capa_mask = wpa_s->extended_capa_mask;
 509         hapd_iface->extended_capa_len = wpa_s->extended_capa_len;
 510
 511         wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
 512         if (conf == NULL) {
 513                 wpa_supplicant_ap_deinit(wpa_s);
 514                 return -1;
 515         }
 516
 517         os_memcpy(wpa_s->ap_iface->conf->wmm_ac_params,
 518                   wpa_s->conf->wmm_ac_params,
 519                   sizeof(wpa_s->conf->wmm_ac_params));
 520
 521         if (params.uapsd > 0) {
 522                 conf->bss->wmm_enabled = 1;
 523                 conf->bss->wmm_uapsd = 1;
 524         }
 525
 526         if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
 527                 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
 528                 wpa_supplicant_ap_deinit(wpa_s);
 529                 return -1;
 530         }
 531
 532 #ifdef CONFIG_P2P
 533         if (ssid->mode == WPAS_MODE_P2P_GO)
 534                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 535         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 536                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 537                         P2P_GROUP_FORMATION;
 538 #endif /* CONFIG_P2P */
 539
 540         hapd_iface->num_bss = conf->num_bss;
 541         hapd_iface->bss = os_calloc(conf->num_bss,
 542                                     sizeof(struct hostapd_data *));
 543         if (hapd_iface->bss == NULL) {
 544                 wpa_supplicant_ap_deinit(wpa_s);
 545                 return -1;
 546         }
 547
 548         for (i = 0; i < conf->num_bss; i++) {
 549                 hapd_iface->bss[i] =
 550                         hostapd_alloc_bss_data(hapd_iface, conf,
 551                                                &conf->bss[i]);
 552                 if (hapd_iface->bss[i] == NULL) {
 553                         wpa_supplicant_ap_deinit(wpa_s);
 554                         return -1;
 555                 }
 556
 557                 hapd_iface->bss[i]->msg_ctx = wpa_s;
 558                 hapd_iface->bss[i]->msg_ctx_parent = wpa_s->parent;
 559                 hapd_iface->bss[i]->public_action_cb = ap_public_action_rx;
 560                 hapd_iface->bss[i]->public_action_cb_ctx = wpa_s;
 561                 hapd_iface->bss[i]->vendor_action_cb = ap_vendor_action_rx;
 562                 hapd_iface->bss[i]->vendor_action_cb_ctx = wpa_s;
 563                 hostapd_register_probereq_cb(hapd_iface->bss[i],
 564                                              ap_probe_req_rx, wpa_s);
 565                 hapd_iface->bss[i]->wps_reg_success_cb = ap_wps_reg_success_cb;
 566                 hapd_iface->bss[i]->wps_reg_success_cb_ctx = wpa_s;
 567                 hapd_iface->bss[i]->wps_event_cb = ap_wps_event_cb;
 568                 hapd_iface->bss[i]->wps_event_cb_ctx = wpa_s;
 569                 hapd_iface->bss[i]->sta_authorized_cb = ap_sta_authorized_cb;
 570                 hapd_iface->bss[i]->sta_authorized_cb_ctx = wpa_s;
 571 #ifdef CONFIG_P2P
 572                 hapd_iface->bss[i]->p2p = wpa_s->global->p2p;
 573                 hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(wpa_s,
 574                                                                     ssid);
 575 #endif /* CONFIG_P2P */
 576                 hapd_iface->bss[i]->setup_complete_cb = wpas_ap_configured_cb;
 577                 hapd_iface->bss[i]->setup_complete_cb_ctx = wpa_s;
 578         }
 579
 580         os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
 581         hapd_iface->bss[0]->driver = wpa_s->driver;
 582         hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
 583
 584         wpa_s->current_ssid = ssid;
 585         os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
 586         wpa_s->assoc_freq = ssid->frequency;
 587
 588         if (hostapd_setup_interface(wpa_s->ap_iface)) {
 589                 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
 590                 wpa_supplicant_ap_deinit(wpa_s);
 591                 return -1;
 592         }
 593
 594         return 0;
 595 }
 596
 597
 598 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
 599 {
 600 #ifdef CONFIG_WPS
 601         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 602 #endif /* CONFIG_WPS */
 603
 604         if (wpa_s->ap_iface == NULL)
 605                 return;
 606
 607         wpa_s->current_ssid = NULL;
 608         wpa_s->assoc_freq = 0;
 609 #ifdef CONFIG_P2P
 610         if (wpa_s->ap_iface->bss)
 611                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
 612         wpas_p2p_group_deinit(wpa_s);
 613 #endif /* CONFIG_P2P */
 614         hostapd_interface_deinit(wpa_s->ap_iface);
 615         hostapd_interface_free(wpa_s->ap_iface);
 616         wpa_s->ap_iface = NULL;
 617         wpa_drv_deinit_ap(wpa_s);
 618 }
 619
 620
 621 void ap_tx_status(void *ctx, const u8 *addr,
 622                   const u8 *buf, size_t len, int ack)
 623 {
 624 #ifdef NEED_AP_MLME
 625         struct wpa_supplicant *wpa_s = ctx;
 626         hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
 627 #endif /* NEED_AP_MLME */
 628 }
 629
 630
 631 void ap_eapol_tx_status(void *ctx, const u8 *dst,
 632                         const u8 *data, size_t len, int ack)
 633 {
 634 #ifdef NEED_AP_MLME
 635         struct wpa_supplicant *wpa_s = ctx;
 636         hostapd_tx_status(wpa_s->ap_iface->bss[0], dst, data, len, ack);
 637 #endif /* NEED_AP_MLME */
 638 }
 639
 640
 641 void ap_client_poll_ok(void *ctx, const u8 *addr)
 642 {
 643 #ifdef NEED_AP_MLME
 644         struct wpa_supplicant *wpa_s = ctx;
 645         if (wpa_s->ap_iface)
 646                 hostapd_client_poll_ok(wpa_s->ap_iface->bss[0], addr);
 647 #endif /* NEED_AP_MLME */
 648 }
 649
 650
 651 void ap_rx_from_unknown_sta(void *ctx, const u8 *addr, int wds)
 652 {
 653 #ifdef NEED_AP_MLME
 654         struct wpa_supplicant *wpa_s = ctx;
 655         ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], addr, wds);
 656 #endif /* NEED_AP_MLME */
 657 }
 658
 659
 660 void ap_mgmt_rx(void *ctx, struct rx_mgmt *rx_mgmt)
 661 {
 662 #ifdef NEED_AP_MLME
 663         struct wpa_supplicant *wpa_s = ctx;
 664         struct hostapd_frame_info fi;
 665         os_memset(&fi, 0, sizeof(fi));
 666         fi.datarate = rx_mgmt->datarate;
 667         fi.ssi_signal = rx_mgmt->ssi_signal;
 668         ieee802_11_mgmt(wpa_s->ap_iface->bss[0], rx_mgmt->frame,
 669                         rx_mgmt->frame_len, &fi);
 670 #endif /* NEED_AP_MLME */
 671 }
 672
 673
 674 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
 675 {
 676 #ifdef NEED_AP_MLME
 677         struct wpa_supplicant *wpa_s = ctx;
 678         ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
 679 #endif /* NEED_AP_MLME */
 680 }
 681
 682
 683 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
 684                                 const u8 *src_addr, const u8 *buf, size_t len)
 685 {
 686         ieee802_1x_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
 687 }
 688
 689
 690 #ifdef CONFIG_WPS
 691
 692 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 693                               const u8 *p2p_dev_addr)
 694 {
 695         if (!wpa_s->ap_iface)
 696                 return -1;
 697         return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0],
 698                                          p2p_dev_addr);
 699 }
 700
 701
 702 int wpa_supplicant_ap_wps_cancel(struct wpa_supplicant *wpa_s)
 703 {
 704         struct wps_registrar *reg;
 705         int reg_sel = 0, wps_sta = 0;
 706
 707         if (!wpa_s->ap_iface || !wpa_s->ap_iface->bss[0]->wps)
 708                 return -1;
 709
 710         reg = wpa_s->ap_iface->bss[0]->wps->registrar;
 711         reg_sel = wps_registrar_wps_cancel(reg);
 712         wps_sta = ap_for_each_sta(wpa_s->ap_iface->bss[0],
 713                                   ap_sta_wps_cancel, NULL);
 714
 715         if (!reg_sel && !wps_sta) {
 716                 wpa_printf(MSG_DEBUG, "No WPS operation in progress at this "
 717                            "time");
 718                 return -1;
 719         }
 720
 721         /*
 722          * There are 2 cases to return wps cancel as success:
 723          * 1. When wps cancel was initiated but no connection has been
 724          *    established with client yet.
 725          * 2. Client is in the middle of exchanging WPS messages.
 726          */
 727
 728         return 0;
 729 }
 730
 731
 732 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 733                               const char *pin, char *buf, size_t buflen,
 734                               int timeout)
 735 {
 736         int ret, ret_len = 0;
 737
 738         if (!wpa_s->ap_iface)
 739                 return -1;
 740
 741         if (pin == NULL) {
 742                 unsigned int rpin = wps_generate_pin();
 743                 ret_len = os_snprintf(buf, buflen, "%08d", rpin);
 744                 pin = buf;
 745         } else
 746                 ret_len = os_snprintf(buf, buflen, "%s", pin);
 747
 748         ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], bssid, "any", pin,
 749                                   timeout);
 750         if (ret)
 751                 return -1;
 752         return ret_len;
 753 }
 754
 755
 756 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
 757 {
 758         struct wpa_supplicant *wpa_s = eloop_data;
 759         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
 760         wpas_wps_ap_pin_disable(wpa_s);
 761 }
 762
 763
 764 static void wpas_wps_ap_pin_enable(struct wpa_supplicant *wpa_s, int timeout)
 765 {
 766         struct hostapd_data *hapd;
 767
 768         if (wpa_s->ap_iface == NULL)
 769                 return;
 770         hapd = wpa_s->ap_iface->bss[0];
 771         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
 772         hapd->ap_pin_failures = 0;
 773         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 774         if (timeout > 0)
 775                 eloop_register_timeout(timeout, 0,
 776                                        wpas_wps_ap_pin_timeout, wpa_s, NULL);
 777 }
 778
 779
 780 void wpas_wps_ap_pin_disable(struct wpa_supplicant *wpa_s)
 781 {
 782         struct hostapd_data *hapd;
 783
 784         if (wpa_s->ap_iface == NULL)
 785                 return;
 786         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
 787         hapd = wpa_s->ap_iface->bss[0];
 788         os_free(hapd->conf->ap_pin);
 789         hapd->conf->ap_pin = NULL;
 790         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 791 }
 792
 793
 794 const char * wpas_wps_ap_pin_random(struct wpa_supplicant *wpa_s, int timeout)
 795 {
 796         struct hostapd_data *hapd;
 797         unsigned int pin;
 798         char pin_txt[9];
 799
 800         if (wpa_s->ap_iface == NULL)
 801                 return NULL;
 802         hapd = wpa_s->ap_iface->bss[0];
 803         pin = wps_generate_pin();
 804         os_snprintf(pin_txt, sizeof(pin_txt), "%08u", pin);
 805         os_free(hapd->conf->ap_pin);
 806         hapd->conf->ap_pin = os_strdup(pin_txt);
 807         if (hapd->conf->ap_pin == NULL)
 808                 return NULL;
 809         wpas_wps_ap_pin_enable(wpa_s, timeout);
 810
 811         return hapd->conf->ap_pin;
 812 }
 813
 814
 815 const char * wpas_wps_ap_pin_get(struct wpa_supplicant *wpa_s)
 816 {
 817         struct hostapd_data *hapd;
 818         if (wpa_s->ap_iface == NULL)
 819                 return NULL;
 820         hapd = wpa_s->ap_iface->bss[0];
 821         return hapd->conf->ap_pin;
 822 }
 823
 824
 825 int wpas_wps_ap_pin_set(struct wpa_supplicant *wpa_s, const char *pin,
 826                         int timeout)
 827 {
 828         struct hostapd_data *hapd;
 829         char pin_txt[9];
 830         int ret;
 831
 832         if (wpa_s->ap_iface == NULL)
 833                 return -1;
 834         hapd = wpa_s->ap_iface->bss[0];
 835         ret = os_snprintf(pin_txt, sizeof(pin_txt), "%s", pin);
 836         if (ret < 0 || ret >= (int) sizeof(pin_txt))
 837                 return -1;
 838         os_free(hapd->conf->ap_pin);
 839         hapd->conf->ap_pin = os_strdup(pin_txt);
 840         if (hapd->conf->ap_pin == NULL)
 841                 return -1;
 842         wpas_wps_ap_pin_enable(wpa_s, timeout);
 843
 844         return 0;
 845 }
 846
 847
 848 void wpa_supplicant_ap_pwd_auth_fail(struct wpa_supplicant *wpa_s)
 849 {
 850         struct hostapd_data *hapd;
 851
 852         if (wpa_s->ap_iface == NULL)
 853                 return;
 854         hapd = wpa_s->ap_iface->bss[0];
 855
 856         /*
 857          * Registrar failed to prove its knowledge of the AP PIN. Disable AP
 858          * PIN if this happens multiple times to slow down brute force attacks.
 859          */
 860         hapd->ap_pin_failures++;
 861         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u",
 862                    hapd->ap_pin_failures);
 863         if (hapd->ap_pin_failures < 3)
 864                 return;
 865
 866         wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN");
 867         hapd->ap_pin_failures = 0;
 868         os_free(hapd->conf->ap_pin);
 869         hapd->conf->ap_pin = NULL;
 870 }
 871
 872
 873 #ifdef CONFIG_WPS_NFC
 874
 875 struct wpabuf * wpas_ap_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
 876                                              int ndef)
 877 {
 878         struct hostapd_data *hapd;
 879
 880         if (wpa_s->ap_iface == NULL)
 881                 return NULL;
 882         hapd = wpa_s->ap_iface->bss[0];
 883         return hostapd_wps_nfc_config_token(hapd, ndef);
 884 }
 885
 886
 887 struct wpabuf * wpas_ap_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
 888                                              int ndef)
 889 {
 890         struct hostapd_data *hapd;
 891
 892         if (wpa_s->ap_iface == NULL)
 893                 return NULL;
 894         hapd = wpa_s->ap_iface->bss[0];
 895         return hostapd_wps_nfc_hs_cr(hapd, ndef);
 896 }
 897
 898 #endif /* CONFIG_WPS_NFC */
 899
 900 #endif /* CONFIG_WPS */
 901
 902
 903 #ifdef CONFIG_CTRL_IFACE
 904
 905 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
 906                             char *buf, size_t buflen)
 907 {
 908         if (wpa_s->ap_iface == NULL)
 909                 return -1;
 910         return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
 911                                             buf, buflen);
 912 }
 913
 914
 915 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
 916                       char *buf, size_t buflen)
 917 {
 918         if (wpa_s->ap_iface == NULL)
 919                 return -1;
 920         return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
 921                                       buf, buflen);
 922 }
 923
 924
 925 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
 926                            char *buf, size_t buflen)
 927 {
 928         if (wpa_s->ap_iface == NULL)
 929                 return -1;
 930         return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
 931                                            buf, buflen);
 932 }
 933
 934
 935 int ap_ctrl_iface_sta_disassociate(struct wpa_supplicant *wpa_s,
 936                                    const char *txtaddr)
 937 {
 938         if (wpa_s->ap_iface == NULL)
 939                 return -1;
 940         return hostapd_ctrl_iface_disassociate(wpa_s->ap_iface->bss[0],
 941                                                txtaddr);
 942 }
 943
 944
 945 int ap_ctrl_iface_sta_deauthenticate(struct wpa_supplicant *wpa_s,
 946                                      const char *txtaddr)
 947 {
 948         if (wpa_s->ap_iface == NULL)
 949                 return -1;
 950         return hostapd_ctrl_iface_deauthenticate(wpa_s->ap_iface->bss[0],
 951                                                  txtaddr);
 952 }
 953
 954
 955 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
 956                                  size_t buflen, int verbose)
 957 {
 958         char *pos = buf, *end = buf + buflen;
 959         int ret;
 960         struct hostapd_bss_config *conf;
 961
 962         if (wpa_s->ap_iface == NULL)
 963                 return -1;
 964
 965         conf = wpa_s->ap_iface->bss[0]->conf;
 966         if (conf->wpa == 0)
 967                 return 0;
 968
 969         ret = os_snprintf(pos, end - pos,
 970                           "pairwise_cipher=%s\n"
 971                           "group_cipher=%s\n"
 972                           "key_mgmt=%s\n",
 973                           wpa_cipher_txt(conf->rsn_pairwise),
 974                           wpa_cipher_txt(conf->wpa_group),
 975                           wpa_key_mgmt_txt(conf->wpa_key_mgmt,
 976                                            conf->wpa));
 977         if (ret < 0 || ret >= end - pos)
 978                 return pos - buf;
 979         pos += ret;
 980         return pos - buf;
 981 }
 982
 983 #endif /* CONFIG_CTRL_IFACE */
 984
 985
 986 int wpa_supplicant_ap_update_beacon(struct wpa_supplicant *wpa_s)
 987 {
 988         struct hostapd_iface *iface = wpa_s->ap_iface;
 989         struct wpa_ssid *ssid = wpa_s->current_ssid;
 990         struct hostapd_data *hapd;
 991
 992         if (ssid == NULL || wpa_s->ap_iface == NULL ||
 993             ssid->mode == WPAS_MODE_INFRA ||
 994             ssid->mode == WPAS_MODE_IBSS)
 995                 return -1;
 996
 997 #ifdef CONFIG_P2P
 998         if (ssid->mode == WPAS_MODE_P2P_GO)
 999                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
1000         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
1001                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
1002                         P2P_GROUP_FORMATION;
1003 #endif /* CONFIG_P2P */
1004
1005         hapd = iface->bss[0];
1006         if (hapd->drv_priv == NULL)
1007                 return -1;
1008         ieee802_11_set_beacons(iface);
1009         hostapd_set_ap_wps_ie(hapd);
1010
1011         return 0;
1012 }
1013
1014
1015 void wpas_ap_ch_switch(struct wpa_supplicant *wpa_s, int freq, int ht,
1016                        int offset)
1017 {
1018         if (!wpa_s->ap_iface)
1019                 return;
1020
1021         wpa_s->assoc_freq = freq;
1022         hostapd_event_ch_switch(wpa_s->ap_iface->bss[0], freq, ht, offset);
1023 }
1024
1025
1026 int wpa_supplicant_ap_mac_addr_filter(struct wpa_supplicant *wpa_s,
1027                                       const u8 *addr)
1028 {
1029         struct hostapd_data *hapd;
1030         struct hostapd_bss_config *conf;
1031
1032         if (!wpa_s->ap_iface)
1033                 return -1;
1034
1035         if (addr)
1036                 wpa_printf(MSG_DEBUG, "AP: Set MAC address filter: " MACSTR,
1037                            MAC2STR(addr));
1038         else
1039                 wpa_printf(MSG_DEBUG, "AP: Clear MAC address filter");
1040
1041         hapd = wpa_s->ap_iface->bss[0];
1042         conf = hapd->conf;
1043
1044         os_free(conf->accept_mac);
1045         conf->accept_mac = NULL;
1046         conf->num_accept_mac = 0;
1047         os_free(conf->deny_mac);
1048         conf->deny_mac = NULL;
1049         conf->num_deny_mac = 0;
1050
1051         if (addr == NULL) {
1052                 conf->macaddr_acl = ACCEPT_UNLESS_DENIED;
1053                 return 0;
1054         }
1055
1056         conf->macaddr_acl = DENY_UNLESS_ACCEPTED;
1057         conf->accept_mac = os_zalloc(sizeof(struct mac_acl_entry));
1058         if (conf->accept_mac == NULL)
1059                 return -1;
1060         os_memcpy(conf->accept_mac[0].addr, addr, ETH_ALEN);
1061         conf->num_accept_mac = 1;
1062
1063         return 0;
1064 }