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 "eapol_supp/eapol_supp_sm.h"
  18 #include "ap/hostapd.h"
  19 #include "ap/ap_config.h"
  20 #include "ap/ap_drv_ops.h"
  21 #ifdef NEED_AP_MLME
  22 #include "ap/ieee802_11.h"
  23 #endif /* NEED_AP_MLME */
  24 #include "ap/beacon.h"
  25 #include "ap/ieee802_1x.h"
  26 #include "ap/wps_hostapd.h"
  27 #include "ap/ctrl_iface_ap.h"
  28 #include "wps/wps.h"
  29 #include "common/ieee802_11_defs.h"
  30 #include "config_ssid.h"
  31 #include "config.h"
  32 #include "wpa_supplicant_i.h"
  33 #include "driver_i.h"
  34 #include "p2p_supplicant.h"
  35 #include "ap.h"
  36 #include "ap/sta_info.h"
  37 #include "notify.h"
  38
  39
  40 #ifdef CONFIG_WPS
  41 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
  42 #endif /* CONFIG_WPS */
  43
  44
  45 static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
  46                                   struct wpa_ssid *ssid,
  47                                   struct hostapd_config *conf)
  48 {
  49         struct hostapd_bss_config *bss = &conf->bss[0];
  50
  51         conf->driver = wpa_s->driver;
  52
  53         os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
  54
  55         conf->hw_mode = ieee80211_freq_to_chan(ssid->frequency,
  56                                                &conf->channel);
  57         if (conf->hw_mode == NUM_HOSTAPD_MODES) {
  58                 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
  59                            ssid->frequency);
  60                 return -1;
  61         }
  62
  63         /* TODO: enable HT40 if driver supports it;
  64          * drop to 11b if driver does not support 11g */
  65
  66 #ifdef CONFIG_IEEE80211N
  67         /*
  68          * Enable HT20 if the driver supports it, by setting conf->ieee80211n
  69          * and a mask of allowed capabilities within conf->ht_capab.
  70          * Using default config settings for: conf->ht_op_mode_fixed,
  71          * conf->secondary_channel, conf->require_ht
  72          */
  73         if (wpa_s->hw.modes) {
  74                 struct hostapd_hw_modes *mode = NULL;
  75                 int i, no_ht = 0;
  76                 for (i = 0; i < wpa_s->hw.num_modes; i++) {
  77                         if (wpa_s->hw.modes[i].mode == conf->hw_mode) {
  78                                 mode = &wpa_s->hw.modes[i];
  79                                 break;
  80                         }
  81                 }
  82
  83 #ifdef CONFIG_HT_OVERRIDES
  84                 if (ssid->disable_ht) {
  85                         conf->ieee80211n = 0;
  86                         conf->ht_capab = 0;
  87                         no_ht = 1;
  88                 }
  89 #endif /* CONFIG_HT_OVERRIDES */
  90
  91                 if (!no_ht && mode && mode->ht_capab) {
  92                         conf->ieee80211n = 1;
  93 #ifdef CONFIG_P2P
  94                         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211A &&
  95                             (mode->ht_capab &
  96                              HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) &&
  97                             ssid->ht40)
  98                                 conf->secondary_channel =
  99                                         wpas_p2p_get_ht40_mode(wpa_s, mode,
 100                                                                conf->channel);
 101                         if (conf->secondary_channel)
 102                                 conf->ht_capab |=
 103                                         HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET;
 104 #endif /* CONFIG_P2P */
 105
 106                         /*
 107                          * white-list capabilities that won't cause issues
 108                          * to connecting stations, while leaving the current
 109                          * capabilities intact (currently disabled SMPS).
 110                          */
 111                         conf->ht_capab |= mode->ht_capab &
 112                                 (HT_CAP_INFO_GREEN_FIELD |
 113                                  HT_CAP_INFO_SHORT_GI20MHZ |
 114                                  HT_CAP_INFO_SHORT_GI40MHZ |
 115                                  HT_CAP_INFO_RX_STBC_MASK |
 116                                  HT_CAP_INFO_MAX_AMSDU_SIZE);
 117                 }
 118         }
 119 #endif /* CONFIG_IEEE80211N */
 120
 121 #ifdef CONFIG_P2P
 122         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G &&
 123             (ssid->mode == WPAS_MODE_P2P_GO ||
 124              ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)) {
 125                 /* Remove 802.11b rates from supported and basic rate sets */
 126                 int *list = os_malloc(4 * sizeof(int));
 127                 if (list) {
 128                         list[0] = 60;
 129                         list[1] = 120;
 130                         list[2] = 240;
 131                         list[3] = -1;
 132                 }
 133                 conf->basic_rates = list;
 134
 135                 list = os_malloc(9 * sizeof(int));
 136                 if (list) {
 137                         list[0] = 60;
 138                         list[1] = 90;
 139                         list[2] = 120;
 140                         list[3] = 180;
 141                         list[4] = 240;
 142                         list[5] = 360;
 143                         list[6] = 480;
 144                         list[7] = 540;
 145                         list[8] = -1;
 146                 }
 147                 conf->supported_rates = list;
 148         }
 149
 150         bss->isolate = !wpa_s->conf->p2p_intra_bss;
 151         bss->force_per_enrollee_psk = wpa_s->global->p2p_per_sta_psk;
 152 #endif /* CONFIG_P2P */
 153
 154         if (ssid->ssid_len == 0) {
 155                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 156                 return -1;
 157         }
 158         os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
 159         bss->ssid.ssid_len = ssid->ssid_len;
 160         bss->ssid.ssid_set = 1;
 161
 162         bss->ignore_broadcast_ssid = ssid->ignore_broadcast_ssid;
 163
 164         if (ssid->auth_alg)
 165                 bss->auth_algs = ssid->auth_alg;
 166
 167         if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
 168                 bss->wpa = ssid->proto;
 169         bss->wpa_key_mgmt = ssid->key_mgmt;
 170         bss->wpa_pairwise = ssid->pairwise_cipher;
 171         if (ssid->psk_set) {
 172                 os_free(bss->ssid.wpa_psk);
 173                 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
 174                 if (bss->ssid.wpa_psk == NULL)
 175                         return -1;
 176                 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
 177                 bss->ssid.wpa_psk->group = 1;
 178         } else if (ssid->passphrase) {
 179                 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
 180         } else if (ssid->wep_key_len[0] || ssid->wep_key_len[1] ||
 181                    ssid->wep_key_len[2] || ssid->wep_key_len[3]) {
 182                 struct hostapd_wep_keys *wep = &bss->ssid.wep;
 183                 int i;
 184                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 185                         if (ssid->wep_key_len[i] == 0)
 186                                 continue;
 187                         wep->key[i] = os_malloc(ssid->wep_key_len[i]);
 188                         if (wep->key[i] == NULL)
 189                                 return -1;
 190                         os_memcpy(wep->key[i], ssid->wep_key[i],
 191                                   ssid->wep_key_len[i]);
 192                         wep->len[i] = ssid->wep_key_len[i];
 193                 }
 194                 wep->idx = ssid->wep_tx_keyidx;
 195                 wep->keys_set = 1;
 196         }
 197
 198         if (ssid->ap_max_inactivity)
 199                 bss->ap_max_inactivity = ssid->ap_max_inactivity;
 200
 201         if (ssid->dtim_period)
 202                 bss->dtim_period = ssid->dtim_period;
 203         else if (wpa_s->conf->dtim_period)
 204                 bss->dtim_period = wpa_s->conf->dtim_period;
 205
 206         if (ssid->beacon_int)
 207                 conf->beacon_int = ssid->beacon_int;
 208         else if (wpa_s->conf->beacon_int)
 209                 conf->beacon_int = wpa_s->conf->beacon_int;
 210
 211         if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
 212                 bss->rsn_pairwise = bss->wpa_pairwise;
 213         bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise,
 214                                                     bss->rsn_pairwise);
 215
 216         if (bss->wpa && bss->ieee802_1x)
 217                 bss->ssid.security_policy = SECURITY_WPA;
 218         else if (bss->wpa)
 219                 bss->ssid.security_policy = SECURITY_WPA_PSK;
 220         else if (bss->ieee802_1x) {
 221                 int cipher = WPA_CIPHER_NONE;
 222                 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
 223                 bss->ssid.wep.default_len = bss->default_wep_key_len;
 224                 if (bss->default_wep_key_len)
 225                         cipher = bss->default_wep_key_len >= 13 ?
 226                                 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
 227                 bss->wpa_group = cipher;
 228                 bss->wpa_pairwise = cipher;
 229                 bss->rsn_pairwise = cipher;
 230         } else if (bss->ssid.wep.keys_set) {
 231                 int cipher = WPA_CIPHER_WEP40;
 232                 if (bss->ssid.wep.len[0] >= 13)
 233                         cipher = WPA_CIPHER_WEP104;
 234                 bss->ssid.security_policy = SECURITY_STATIC_WEP;
 235                 bss->wpa_group = cipher;
 236                 bss->wpa_pairwise = cipher;
 237                 bss->rsn_pairwise = cipher;
 238         } else {
 239                 bss->ssid.security_policy = SECURITY_PLAINTEXT;
 240                 bss->wpa_group = WPA_CIPHER_NONE;
 241                 bss->wpa_pairwise = WPA_CIPHER_NONE;
 242                 bss->rsn_pairwise = WPA_CIPHER_NONE;
 243         }
 244
 245         if (bss->wpa_group_rekey < 86400 && (bss->wpa & 2) &&
 246             (bss->wpa_group == WPA_CIPHER_CCMP ||
 247              bss->wpa_group == WPA_CIPHER_GCMP)) {
 248                 /*
 249                  * Strong ciphers do not need frequent rekeying, so increase
 250                  * the default GTK rekeying period to 24 hours.
 251                  */
 252                 bss->wpa_group_rekey = 86400;
 253         }
 254
 255 #ifdef CONFIG_WPS
 256         /*
 257          * Enable WPS by default for open and WPA/WPA2-Personal network, but
 258          * require user interaction to actually use it. Only the internal
 259          * Registrar is supported.
 260          */
 261         if (bss->ssid.security_policy != SECURITY_WPA_PSK &&
 262             bss->ssid.security_policy != SECURITY_PLAINTEXT)
 263                 goto no_wps;
 264 #ifdef CONFIG_WPS2
 265         if (bss->ssid.security_policy == SECURITY_WPA_PSK &&
 266             (!(bss->rsn_pairwise & WPA_CIPHER_CCMP) || !(bss->wpa & 2)))
 267                 goto no_wps; /* WPS2 does not allow WPA/TKIP-only
 268                               * configuration */
 269 #endif /* CONFIG_WPS2 */
 270         bss->eap_server = 1;
 271
 272         if (!ssid->ignore_broadcast_ssid)
 273                 bss->wps_state = 2;
 274
 275         bss->ap_setup_locked = 2;
 276         if (wpa_s->conf->config_methods)
 277                 bss->config_methods = os_strdup(wpa_s->conf->config_methods);
 278         os_memcpy(bss->device_type, wpa_s->conf->device_type,
 279                   WPS_DEV_TYPE_LEN);
 280         if (wpa_s->conf->device_name) {
 281                 bss->device_name = os_strdup(wpa_s->conf->device_name);
 282                 bss->friendly_name = os_strdup(wpa_s->conf->device_name);
 283         }
 284         if (wpa_s->conf->manufacturer)
 285                 bss->manufacturer = os_strdup(wpa_s->conf->manufacturer);
 286         if (wpa_s->conf->model_name)
 287                 bss->model_name = os_strdup(wpa_s->conf->model_name);
 288         if (wpa_s->conf->model_number)
 289                 bss->model_number = os_strdup(wpa_s->conf->model_number);
 290         if (wpa_s->conf->serial_number)
 291                 bss->serial_number = os_strdup(wpa_s->conf->serial_number);
 292         if (is_nil_uuid(wpa_s->conf->uuid))
 293                 os_memcpy(bss->uuid, wpa_s->wps->uuid, WPS_UUID_LEN);
 294         else
 295                 os_memcpy(bss->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
 296         os_memcpy(bss->os_version, wpa_s->conf->os_version, 4);
 297         bss->pbc_in_m1 = wpa_s->conf->pbc_in_m1;
 298 no_wps:
 299 #endif /* CONFIG_WPS */
 300
 301         if (wpa_s->max_stations &&
 302             wpa_s->max_stations < wpa_s->conf->max_num_sta)
 303                 bss->max_num_sta = wpa_s->max_stations;
 304         else
 305                 bss->max_num_sta = wpa_s->conf->max_num_sta;
 306
 307         bss->disassoc_low_ack = wpa_s->conf->disassoc_low_ack;
 308
 309         if (wpa_s->conf->ap_vendor_elements) {
 310                 bss->vendor_elements =
 311                         wpabuf_dup(wpa_s->conf->ap_vendor_elements);
 312         }
 313
 314         return 0;
 315 }
 316
 317
 318 static void ap_public_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 319 {
 320 #ifdef CONFIG_P2P
 321         struct wpa_supplicant *wpa_s = ctx;
 322         const struct ieee80211_mgmt *mgmt;
 323         size_t hdr_len;
 324
 325         mgmt = (const struct ieee80211_mgmt *) buf;
 326         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 327         if (hdr_len > len)
 328                 return;
 329         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 330                            mgmt->u.action.category,
 331                            &mgmt->u.action.u.vs_public_action.action,
 332                            len - hdr_len, freq);
 333 #endif /* CONFIG_P2P */
 334 }
 335
 336
 337 static void ap_wps_event_cb(void *ctx, enum wps_event event,
 338                             union wps_event_data *data)
 339 {
 340 #ifdef CONFIG_P2P
 341         struct wpa_supplicant *wpa_s = ctx;
 342
 343         if (event == WPS_EV_FAIL) {
 344                 struct wps_event_fail *fail = &data->fail;
 345
 346                 if (wpa_s->parent && wpa_s->parent != wpa_s &&
 347                     wpa_s == wpa_s->global->p2p_group_formation) {
 348                         /*
 349                          * src/ap/wps_hostapd.c has already sent this on the
 350                          * main interface, so only send on the parent interface
 351                          * here if needed.
 352                          */
 353                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 354                                 "msg=%d config_error=%d",
 355                                 fail->msg, fail->config_error);
 356                 }
 357                 wpas_p2p_wps_failed(wpa_s, fail);
 358         }
 359 #endif /* CONFIG_P2P */
 360 }
 361
 362
 363 static void ap_sta_authorized_cb(void *ctx, const u8 *mac_addr,
 364                                  int authorized, const u8 *p2p_dev_addr)
 365 {
 366         wpas_notify_sta_authorized(ctx, mac_addr, authorized, p2p_dev_addr);
 367 }
 368
 369
 370 static int ap_vendor_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 371 {
 372 #ifdef CONFIG_P2P
 373         struct wpa_supplicant *wpa_s = ctx;
 374         const struct ieee80211_mgmt *mgmt;
 375         size_t hdr_len;
 376
 377         mgmt = (const struct ieee80211_mgmt *) buf;
 378         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 379         if (hdr_len > len)
 380                 return -1;
 381         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 382                            mgmt->u.action.category,
 383                            &mgmt->u.action.u.vs_public_action.action,
 384                            len - hdr_len, freq);
 385 #endif /* CONFIG_P2P */
 386         return 0;
 387 }
 388
 389
 390 static int ap_probe_req_rx(void *ctx, const u8 *sa, const u8 *da,
 391                            const u8 *bssid, const u8 *ie, size_t ie_len,
 392                            int ssi_signal)
 393 {
 394 #ifdef CONFIG_P2P
 395         struct wpa_supplicant *wpa_s = ctx;
 396         return wpas_p2p_probe_req_rx(wpa_s, sa, da, bssid, ie, ie_len,
 397                                      ssi_signal);
 398 #else /* CONFIG_P2P */
 399         return 0;
 400 #endif /* CONFIG_P2P */
 401 }
 402
 403
 404 static void ap_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 405                                   const u8 *uuid_e)
 406 {
 407 #ifdef CONFIG_P2P
 408         struct wpa_supplicant *wpa_s = ctx;
 409         wpas_p2p_wps_success(wpa_s, mac_addr, 1);
 410 #endif /* CONFIG_P2P */
 411 }
 412
 413
 414 static void wpas_ap_configured_cb(void *ctx)
 415 {
 416         struct wpa_supplicant *wpa_s = ctx;
 417
 418         wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 419
 420         if (wpa_s->ap_configured_cb)
 421                 wpa_s->ap_configured_cb(wpa_s->ap_configured_cb_ctx,
 422                                         wpa_s->ap_configured_cb_data);
 423 }
 424
 425
 426 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
 427                              struct wpa_ssid *ssid)
 428 {
 429         struct wpa_driver_associate_params params;
 430         struct hostapd_iface *hapd_iface;
 431         struct hostapd_config *conf;
 432         size_t i;
 433
 434         if (ssid->ssid == NULL || ssid->ssid_len == 0) {
 435                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 436                 return -1;
 437         }
 438
 439         wpa_supplicant_ap_deinit(wpa_s);
 440
 441         wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
 442                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 443
 444         os_memset(&params, 0, sizeof(params));
 445         params.ssid = ssid->ssid;
 446         params.ssid_len = ssid->ssid_len;
 447         switch (ssid->mode) {
 448         case WPAS_MODE_INFRA:
 449                 params.mode = IEEE80211_MODE_INFRA;
 450                 break;
 451         case WPAS_MODE_IBSS:
 452                 params.mode = IEEE80211_MODE_IBSS;
 453                 break;
 454         case WPAS_MODE_AP:
 455         case WPAS_MODE_P2P_GO:
 456         case WPAS_MODE_P2P_GROUP_FORMATION:
 457                 params.mode = IEEE80211_MODE_AP;
 458                 break;
 459         }
 460         if (ssid->frequency == 0)
 461                 ssid->frequency = 2462; /* default channel 11 */
 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 #ifdef CONFIG_P2P
 496                 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION &&
 497                     wpa_s->global->p2p_group_formation == wpa_s)
 498                         wpas_p2p_group_formation_failed(wpa_s->parent);
 499 #endif /* CONFIG_P2P */
 500                 return -1;
 501         }
 502
 503         wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
 504         if (hapd_iface == NULL)
 505                 return -1;
 506         hapd_iface->owner = wpa_s;
 507         hapd_iface->drv_flags = wpa_s->drv_flags;
 508         hapd_iface->probe_resp_offloads = wpa_s->probe_resp_offloads;
 509         hapd_iface->extended_capa = wpa_s->extended_capa;
 510         hapd_iface->extended_capa_mask = wpa_s->extended_capa_mask;
 511         hapd_iface->extended_capa_len = wpa_s->extended_capa_len;
 512
 513         wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
 514         if (conf == NULL) {
 515                 wpa_supplicant_ap_deinit(wpa_s);
 516                 return -1;
 517         }
 518
 519         os_memcpy(wpa_s->ap_iface->conf->wmm_ac_params,
 520                   wpa_s->conf->wmm_ac_params,
 521                   sizeof(wpa_s->conf->wmm_ac_params));
 522
 523         if (params.uapsd > 0) {
 524                 conf->bss->wmm_enabled = 1;
 525                 conf->bss->wmm_uapsd = 1;
 526         }
 527
 528         if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
 529                 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
 530                 wpa_supplicant_ap_deinit(wpa_s);
 531                 return -1;
 532         }
 533
 534 #ifdef CONFIG_P2P
 535         if (ssid->mode == WPAS_MODE_P2P_GO)
 536                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 537         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 538                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 539                         P2P_GROUP_FORMATION;
 540 #endif /* CONFIG_P2P */
 541
 542         hapd_iface->num_bss = conf->num_bss;
 543         hapd_iface->bss = os_calloc(conf->num_bss,
 544                                     sizeof(struct hostapd_data *));
 545         if (hapd_iface->bss == NULL) {
 546                 wpa_supplicant_ap_deinit(wpa_s);
 547                 return -1;
 548         }
 549
 550         for (i = 0; i < conf->num_bss; i++) {
 551                 hapd_iface->bss[i] =
 552                         hostapd_alloc_bss_data(hapd_iface, conf,
 553                                                &conf->bss[i]);
 554                 if (hapd_iface->bss[i] == NULL) {
 555                         wpa_supplicant_ap_deinit(wpa_s);
 556                         return -1;
 557                 }
 558
 559                 hapd_iface->bss[i]->msg_ctx = wpa_s;
 560                 hapd_iface->bss[i]->msg_ctx_parent = wpa_s->parent;
 561                 hapd_iface->bss[i]->public_action_cb = ap_public_action_rx;
 562                 hapd_iface->bss[i]->public_action_cb_ctx = wpa_s;
 563                 hapd_iface->bss[i]->vendor_action_cb = ap_vendor_action_rx;
 564                 hapd_iface->bss[i]->vendor_action_cb_ctx = wpa_s;
 565                 hostapd_register_probereq_cb(hapd_iface->bss[i],
 566                                              ap_probe_req_rx, wpa_s);
 567                 hapd_iface->bss[i]->wps_reg_success_cb = ap_wps_reg_success_cb;
 568                 hapd_iface->bss[i]->wps_reg_success_cb_ctx = wpa_s;
 569                 hapd_iface->bss[i]->wps_event_cb = ap_wps_event_cb;
 570                 hapd_iface->bss[i]->wps_event_cb_ctx = wpa_s;
 571                 hapd_iface->bss[i]->sta_authorized_cb = ap_sta_authorized_cb;
 572                 hapd_iface->bss[i]->sta_authorized_cb_ctx = wpa_s;
 573 #ifdef CONFIG_P2P
 574                 hapd_iface->bss[i]->p2p = wpa_s->global->p2p;
 575                 hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(wpa_s,
 576                                                                     ssid);
 577 #endif /* CONFIG_P2P */
 578                 hapd_iface->bss[i]->setup_complete_cb = wpas_ap_configured_cb;
 579                 hapd_iface->bss[i]->setup_complete_cb_ctx = wpa_s;
 580         }
 581
 582         os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
 583         hapd_iface->bss[0]->driver = wpa_s->driver;
 584         hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
 585
 586         wpa_s->current_ssid = ssid;
 587         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 588         os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
 589         wpa_s->assoc_freq = ssid->frequency;
 590
 591         if (hostapd_setup_interface(wpa_s->ap_iface)) {
 592                 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
 593                 wpa_supplicant_ap_deinit(wpa_s);
 594                 return -1;
 595         }
 596
 597         return 0;
 598 }
 599
 600
 601 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
 602 {
 603 #ifdef CONFIG_WPS
 604         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 605 #endif /* CONFIG_WPS */
 606
 607         if (wpa_s->ap_iface == NULL)
 608                 return;
 609
 610         wpa_s->current_ssid = NULL;
 611         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 612         wpa_s->assoc_freq = 0;
 613 #ifdef CONFIG_P2P
 614         if (wpa_s->ap_iface->bss)
 615                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
 616         wpas_p2p_group_deinit(wpa_s);
 617 #endif /* CONFIG_P2P */
 618         hostapd_interface_deinit(wpa_s->ap_iface);
 619         hostapd_interface_free(wpa_s->ap_iface);
 620         wpa_s->ap_iface = NULL;
 621         wpa_drv_deinit_ap(wpa_s);
 622 }
 623
 624
 625 void ap_tx_status(void *ctx, const u8 *addr,
 626                   const u8 *buf, size_t len, int ack)
 627 {
 628 #ifdef NEED_AP_MLME
 629         struct wpa_supplicant *wpa_s = ctx;
 630         hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
 631 #endif /* NEED_AP_MLME */
 632 }
 633
 634
 635 void ap_eapol_tx_status(void *ctx, const u8 *dst,
 636                         const u8 *data, size_t len, int ack)
 637 {
 638 #ifdef NEED_AP_MLME
 639         struct wpa_supplicant *wpa_s = ctx;
 640         hostapd_tx_status(wpa_s->ap_iface->bss[0], dst, data, len, ack);
 641 #endif /* NEED_AP_MLME */
 642 }
 643
 644
 645 void ap_client_poll_ok(void *ctx, const u8 *addr)
 646 {
 647 #ifdef NEED_AP_MLME
 648         struct wpa_supplicant *wpa_s = ctx;
 649         if (wpa_s->ap_iface)
 650                 hostapd_client_poll_ok(wpa_s->ap_iface->bss[0], addr);
 651 #endif /* NEED_AP_MLME */
 652 }
 653
 654
 655 void ap_rx_from_unknown_sta(void *ctx, const u8 *addr, int wds)
 656 {
 657 #ifdef NEED_AP_MLME
 658         struct wpa_supplicant *wpa_s = ctx;
 659         ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], addr, wds);
 660 #endif /* NEED_AP_MLME */
 661 }
 662
 663
 664 void ap_mgmt_rx(void *ctx, struct rx_mgmt *rx_mgmt)
 665 {
 666 #ifdef NEED_AP_MLME
 667         struct wpa_supplicant *wpa_s = ctx;
 668         struct hostapd_frame_info fi;
 669         os_memset(&fi, 0, sizeof(fi));
 670         fi.datarate = rx_mgmt->datarate;
 671         fi.ssi_signal = rx_mgmt->ssi_signal;
 672         ieee802_11_mgmt(wpa_s->ap_iface->bss[0], rx_mgmt->frame,
 673                         rx_mgmt->frame_len, &fi);
 674 #endif /* NEED_AP_MLME */
 675 }
 676
 677
 678 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
 679 {
 680 #ifdef NEED_AP_MLME
 681         struct wpa_supplicant *wpa_s = ctx;
 682         ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
 683 #endif /* NEED_AP_MLME */
 684 }
 685
 686
 687 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
 688                                 const u8 *src_addr, const u8 *buf, size_t len)
 689 {
 690         ieee802_1x_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
 691 }
 692
 693
 694 #ifdef CONFIG_WPS
 695
 696 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 697                               const u8 *p2p_dev_addr)
 698 {
 699         if (!wpa_s->ap_iface)
 700                 return -1;
 701         return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0],
 702                                          p2p_dev_addr);
 703 }
 704
 705
 706 int wpa_supplicant_ap_wps_cancel(struct wpa_supplicant *wpa_s)
 707 {
 708         struct wps_registrar *reg;
 709         int reg_sel = 0, wps_sta = 0;
 710
 711         if (!wpa_s->ap_iface || !wpa_s->ap_iface->bss[0]->wps)
 712                 return -1;
 713
 714         reg = wpa_s->ap_iface->bss[0]->wps->registrar;
 715         reg_sel = wps_registrar_wps_cancel(reg);
 716         wps_sta = ap_for_each_sta(wpa_s->ap_iface->bss[0],
 717                                   ap_sta_wps_cancel, NULL);
 718
 719         if (!reg_sel && !wps_sta) {
 720                 wpa_printf(MSG_DEBUG, "No WPS operation in progress at this "
 721                            "time");
 722                 return -1;
 723         }
 724
 725         /*
 726          * There are 2 cases to return wps cancel as success:
 727          * 1. When wps cancel was initiated but no connection has been
 728          *    established with client yet.
 729          * 2. Client is in the middle of exchanging WPS messages.
 730          */
 731
 732         return 0;
 733 }
 734
 735
 736 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 737                               const char *pin, char *buf, size_t buflen,
 738                               int timeout)
 739 {
 740         int ret, ret_len = 0;
 741
 742         if (!wpa_s->ap_iface)
 743                 return -1;
 744
 745         if (pin == NULL) {
 746                 unsigned int rpin = wps_generate_pin();
 747                 ret_len = os_snprintf(buf, buflen, "%08d", rpin);
 748                 pin = buf;
 749         } else
 750                 ret_len = os_snprintf(buf, buflen, "%s", pin);
 751
 752         ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], bssid, "any", pin,
 753                                   timeout);
 754         if (ret)
 755                 return -1;
 756         return ret_len;
 757 }
 758
 759
 760 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
 761 {
 762         struct wpa_supplicant *wpa_s = eloop_data;
 763         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
 764         wpas_wps_ap_pin_disable(wpa_s);
 765 }
 766
 767
 768 static void wpas_wps_ap_pin_enable(struct wpa_supplicant *wpa_s, int timeout)
 769 {
 770         struct hostapd_data *hapd;
 771
 772         if (wpa_s->ap_iface == NULL)
 773                 return;
 774         hapd = wpa_s->ap_iface->bss[0];
 775         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
 776         hapd->ap_pin_failures = 0;
 777         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 778         if (timeout > 0)
 779                 eloop_register_timeout(timeout, 0,
 780                                        wpas_wps_ap_pin_timeout, wpa_s, NULL);
 781 }
 782
 783
 784 void wpas_wps_ap_pin_disable(struct wpa_supplicant *wpa_s)
 785 {
 786         struct hostapd_data *hapd;
 787
 788         if (wpa_s->ap_iface == NULL)
 789                 return;
 790         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
 791         hapd = wpa_s->ap_iface->bss[0];
 792         os_free(hapd->conf->ap_pin);
 793         hapd->conf->ap_pin = NULL;
 794         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 795 }
 796
 797
 798 const char * wpas_wps_ap_pin_random(struct wpa_supplicant *wpa_s, int timeout)
 799 {
 800         struct hostapd_data *hapd;
 801         unsigned int pin;
 802         char pin_txt[9];
 803
 804         if (wpa_s->ap_iface == NULL)
 805                 return NULL;
 806         hapd = wpa_s->ap_iface->bss[0];
 807         pin = wps_generate_pin();
 808         os_snprintf(pin_txt, sizeof(pin_txt), "%08u", pin);
 809         os_free(hapd->conf->ap_pin);
 810         hapd->conf->ap_pin = os_strdup(pin_txt);
 811         if (hapd->conf->ap_pin == NULL)
 812                 return NULL;
 813         wpas_wps_ap_pin_enable(wpa_s, timeout);
 814
 815         return hapd->conf->ap_pin;
 816 }
 817
 818
 819 const char * wpas_wps_ap_pin_get(struct wpa_supplicant *wpa_s)
 820 {
 821         struct hostapd_data *hapd;
 822         if (wpa_s->ap_iface == NULL)
 823                 return NULL;
 824         hapd = wpa_s->ap_iface->bss[0];
 825         return hapd->conf->ap_pin;
 826 }
 827
 828
 829 int wpas_wps_ap_pin_set(struct wpa_supplicant *wpa_s, const char *pin,
 830                         int timeout)
 831 {
 832         struct hostapd_data *hapd;
 833         char pin_txt[9];
 834         int ret;
 835
 836         if (wpa_s->ap_iface == NULL)
 837                 return -1;
 838         hapd = wpa_s->ap_iface->bss[0];
 839         ret = os_snprintf(pin_txt, sizeof(pin_txt), "%s", pin);
 840         if (ret < 0 || ret >= (int) sizeof(pin_txt))
 841                 return -1;
 842         os_free(hapd->conf->ap_pin);
 843         hapd->conf->ap_pin = os_strdup(pin_txt);
 844         if (hapd->conf->ap_pin == NULL)
 845                 return -1;
 846         wpas_wps_ap_pin_enable(wpa_s, timeout);
 847
 848         return 0;
 849 }
 850
 851
 852 void wpa_supplicant_ap_pwd_auth_fail(struct wpa_supplicant *wpa_s)
 853 {
 854         struct hostapd_data *hapd;
 855
 856         if (wpa_s->ap_iface == NULL)
 857                 return;
 858         hapd = wpa_s->ap_iface->bss[0];
 859
 860         /*
 861          * Registrar failed to prove its knowledge of the AP PIN. Disable AP
 862          * PIN if this happens multiple times to slow down brute force attacks.
 863          */
 864         hapd->ap_pin_failures++;
 865         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u",
 866                    hapd->ap_pin_failures);
 867         if (hapd->ap_pin_failures < 3)
 868                 return;
 869
 870         wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN");
 871         hapd->ap_pin_failures = 0;
 872         os_free(hapd->conf->ap_pin);
 873         hapd->conf->ap_pin = NULL;
 874 }
 875
 876
 877 #ifdef CONFIG_WPS_NFC
 878
 879 struct wpabuf * wpas_ap_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
 880                                              int ndef)
 881 {
 882         struct hostapd_data *hapd;
 883
 884         if (wpa_s->ap_iface == NULL)
 885                 return NULL;
 886         hapd = wpa_s->ap_iface->bss[0];
 887         return hostapd_wps_nfc_config_token(hapd, ndef);
 888 }
 889
 890
 891 struct wpabuf * wpas_ap_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
 892                                              int ndef)
 893 {
 894         struct hostapd_data *hapd;
 895
 896         if (wpa_s->ap_iface == NULL)
 897                 return NULL;
 898         hapd = wpa_s->ap_iface->bss[0];
 899         return hostapd_wps_nfc_hs_cr(hapd, ndef);
 900 }
 901
 902 #endif /* CONFIG_WPS_NFC */
 903
 904 #endif /* CONFIG_WPS */
 905
 906
 907 #ifdef CONFIG_CTRL_IFACE
 908
 909 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
 910                             char *buf, size_t buflen)
 911 {
 912         if (wpa_s->ap_iface == NULL)
 913                 return -1;
 914         return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
 915                                             buf, buflen);
 916 }
 917
 918
 919 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
 920                       char *buf, size_t buflen)
 921 {
 922         if (wpa_s->ap_iface == NULL)
 923                 return -1;
 924         return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
 925                                       buf, buflen);
 926 }
 927
 928
 929 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
 930                            char *buf, size_t buflen)
 931 {
 932         if (wpa_s->ap_iface == NULL)
 933                 return -1;
 934         return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
 935                                            buf, buflen);
 936 }
 937
 938
 939 int ap_ctrl_iface_sta_disassociate(struct wpa_supplicant *wpa_s,
 940                                    const char *txtaddr)
 941 {
 942         if (wpa_s->ap_iface == NULL)
 943                 return -1;
 944         return hostapd_ctrl_iface_disassociate(wpa_s->ap_iface->bss[0],
 945                                                txtaddr);
 946 }
 947
 948
 949 int ap_ctrl_iface_sta_deauthenticate(struct wpa_supplicant *wpa_s,
 950                                      const char *txtaddr)
 951 {
 952         if (wpa_s->ap_iface == NULL)
 953                 return -1;
 954         return hostapd_ctrl_iface_deauthenticate(wpa_s->ap_iface->bss[0],
 955                                                  txtaddr);
 956 }
 957
 958
 959 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
 960                                  size_t buflen, int verbose)
 961 {
 962         char *pos = buf, *end = buf + buflen;
 963         int ret;
 964         struct hostapd_bss_config *conf;
 965
 966         if (wpa_s->ap_iface == NULL)
 967                 return -1;
 968
 969         conf = wpa_s->ap_iface->bss[0]->conf;
 970         if (conf->wpa == 0)
 971                 return 0;
 972
 973         ret = os_snprintf(pos, end - pos,
 974                           "pairwise_cipher=%s\n"
 975                           "group_cipher=%s\n"
 976                           "key_mgmt=%s\n",
 977                           wpa_cipher_txt(conf->rsn_pairwise),
 978                           wpa_cipher_txt(conf->wpa_group),
 979                           wpa_key_mgmt_txt(conf->wpa_key_mgmt,
 980                                            conf->wpa));
 981         if (ret < 0 || ret >= end - pos)
 982                 return pos - buf;
 983         pos += ret;
 984         return pos - buf;
 985 }
 986
 987 #endif /* CONFIG_CTRL_IFACE */
 988
 989
 990 int wpa_supplicant_ap_update_beacon(struct wpa_supplicant *wpa_s)
 991 {
 992         struct hostapd_iface *iface = wpa_s->ap_iface;
 993         struct wpa_ssid *ssid = wpa_s->current_ssid;
 994         struct hostapd_data *hapd;
 995
 996         if (ssid == NULL || wpa_s->ap_iface == NULL ||
 997             ssid->mode == WPAS_MODE_INFRA ||
 998             ssid->mode == WPAS_MODE_IBSS)
 999                 return -1;
1000
1001 #ifdef CONFIG_P2P
1002         if (ssid->mode == WPAS_MODE_P2P_GO)
1003                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
1004         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
1005                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
1006                         P2P_GROUP_FORMATION;
1007 #endif /* CONFIG_P2P */
1008
1009         hapd = iface->bss[0];
1010         if (hapd->drv_priv == NULL)
1011                 return -1;
1012         ieee802_11_set_beacons(iface);
1013         hostapd_set_ap_wps_ie(hapd);
1014
1015         return 0;
1016 }
1017
1018
1019 void wpas_ap_ch_switch(struct wpa_supplicant *wpa_s, int freq, int ht,
1020                        int offset)
1021 {
1022         if (!wpa_s->ap_iface)
1023                 return;
1024
1025         wpa_s->assoc_freq = freq;
1026         hostapd_event_ch_switch(wpa_s->ap_iface->bss[0], freq, ht, offset);
1027 }
1028
1029
1030 int wpa_supplicant_ap_mac_addr_filter(struct wpa_supplicant *wpa_s,
1031                                       const u8 *addr)
1032 {
1033         struct hostapd_data *hapd;
1034         struct hostapd_bss_config *conf;
1035
1036         if (!wpa_s->ap_iface)
1037                 return -1;
1038
1039         if (addr)
1040                 wpa_printf(MSG_DEBUG, "AP: Set MAC address filter: " MACSTR,
1041                            MAC2STR(addr));
1042         else
1043                 wpa_printf(MSG_DEBUG, "AP: Clear MAC address filter");
1044
1045         hapd = wpa_s->ap_iface->bss[0];
1046         conf = hapd->conf;
1047
1048         os_free(conf->accept_mac);
1049         conf->accept_mac = NULL;
1050         conf->num_accept_mac = 0;
1051         os_free(conf->deny_mac);
1052         conf->deny_mac = NULL;
1053         conf->num_deny_mac = 0;
1054
1055         if (addr == NULL) {
1056                 conf->macaddr_acl = ACCEPT_UNLESS_DENIED;
1057                 return 0;
1058         }
1059
1060         conf->macaddr_acl = DENY_UNLESS_ACCEPTED;
1061         conf->accept_mac = os_zalloc(sizeof(struct mac_acl_entry));
1062         if (conf->accept_mac == NULL)
1063                 return -1;
1064         os_memcpy(conf->accept_mac[0].addr, addr, ETH_ALEN);
1065         conf->num_accept_mac = 1;
1066
1067         return 0;
1068 }