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