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         int pairwise;
  50
  51         conf->driver = wpa_s->driver;
  52
  53         os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
  54
  55         if (ssid->frequency == 0) {
  56                 /* default channel 11 */
  57                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
  58                 conf->channel = 11;
  59         } else if (ssid->frequency >= 2412 && ssid->frequency <= 2472) {
  60                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
  61                 conf->channel = (ssid->frequency - 2407) / 5;
  62         } else if ((ssid->frequency >= 5180 && ssid->frequency <= 5240) ||
  63                    (ssid->frequency >= 5745 && ssid->frequency <= 5825)) {
  64                 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
  65                 conf->channel = (ssid->frequency - 5000) / 5;
  66         } else if (ssid->frequency >= 56160 + 2160 * 1 &&
  67                    ssid->frequency <= 56160 + 2160 * 4) {
  68                 conf->hw_mode = HOSTAPD_MODE_IEEE80211AD;
  69                 conf->channel = (ssid->frequency - 56160) / 2160;
  70         } else {
  71                 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
  72                            ssid->frequency);
  73                 return -1;
  74         }
  75
  76         /* TODO: enable HT40 if driver supports it;
  77          * drop to 11b if driver does not support 11g */
  78
  79 #ifdef CONFIG_IEEE80211N
  80         /*
  81          * Enable HT20 if the driver supports it, by setting conf->ieee80211n
  82          * and a mask of allowed capabilities within conf->ht_capab.
  83          * Using default config settings for: conf->ht_op_mode_fixed,
  84          * conf->secondary_channel, conf->require_ht
  85          */
  86         if (wpa_s->hw.modes) {
  87                 struct hostapd_hw_modes *mode = NULL;
  88                 int i, no_ht = 0;
  89                 for (i = 0; i < wpa_s->hw.num_modes; i++) {
  90                         if (wpa_s->hw.modes[i].mode == conf->hw_mode) {
  91                                 mode = &wpa_s->hw.modes[i];
  92                                 break;
  93                         }
  94                 }
  95
  96 #ifdef CONFIG_HT_OVERRIDES
  97                 if (ssid->disable_ht) {
  98                         conf->ieee80211n = 0;
  99                         conf->ht_capab = 0;
 100                         no_ht = 1;
 101                 }
 102 #endif /* CONFIG_HT_OVERRIDES */
 103
 104                 if (!no_ht && mode && mode->ht_capab) {
 105                         conf->ieee80211n = 1;
 106 #ifdef CONFIG_P2P
 107                         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211A &&
 108                             (mode->ht_capab &
 109                              HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) &&
 110                             ssid->ht40)
 111                                 conf->secondary_channel =
 112                                         wpas_p2p_get_ht40_mode(wpa_s, mode,
 113                                                                conf->channel);
 114                         if (conf->secondary_channel)
 115                                 conf->ht_capab |=
 116                                         HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET;
 117 #endif /* CONFIG_P2P */
 118
 119                         /*
 120                          * white-list capabilities that won't cause issues
 121                          * to connecting stations, while leaving the current
 122                          * capabilities intact (currently disabled SMPS).
 123                          */
 124                         conf->ht_capab |= mode->ht_capab &
 125                                 (HT_CAP_INFO_GREEN_FIELD |
 126                                  HT_CAP_INFO_SHORT_GI20MHZ |
 127                                  HT_CAP_INFO_SHORT_GI40MHZ |
 128                                  HT_CAP_INFO_RX_STBC_MASK |
 129                                  HT_CAP_INFO_MAX_AMSDU_SIZE);
 130                 }
 131         }
 132 #endif /* CONFIG_IEEE80211N */
 133
 134 #ifdef CONFIG_P2P
 135         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
 136                 /* Remove 802.11b rates from supported and basic rate sets */
 137                 int *list = os_malloc(4 * sizeof(int));
 138                 if (list) {
 139                         list[0] = 60;
 140                         list[1] = 120;
 141                         list[2] = 240;
 142                         list[3] = -1;
 143                 }
 144                 conf->basic_rates = list;
 145
 146                 list = os_malloc(9 * sizeof(int));
 147                 if (list) {
 148                         list[0] = 60;
 149                         list[1] = 90;
 150                         list[2] = 120;
 151                         list[3] = 180;
 152                         list[4] = 240;
 153                         list[5] = 360;
 154                         list[6] = 480;
 155                         list[7] = 540;
 156                         list[8] = -1;
 157                 }
 158                 conf->supported_rates = list;
 159         }
 160
 161         bss->isolate = !wpa_s->conf->p2p_intra_bss;
 162 #endif /* CONFIG_P2P */
 163
 164         if (ssid->ssid_len == 0) {
 165                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 166                 return -1;
 167         }
 168         os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
 169         bss->ssid.ssid_len = ssid->ssid_len;
 170         bss->ssid.ssid_set = 1;
 171
 172         bss->ignore_broadcast_ssid = ssid->ignore_broadcast_ssid;
 173
 174         if (ssid->auth_alg)
 175                 bss->auth_algs = ssid->auth_alg;
 176
 177         if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
 178                 bss->wpa = ssid->proto;
 179         bss->wpa_key_mgmt = ssid->key_mgmt;
 180         bss->wpa_pairwise = ssid->pairwise_cipher;
 181         if (ssid->psk_set) {
 182                 os_free(bss->ssid.wpa_psk);
 183                 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
 184                 if (bss->ssid.wpa_psk == NULL)
 185                         return -1;
 186                 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
 187                 bss->ssid.wpa_psk->group = 1;
 188         } else if (ssid->passphrase) {
 189                 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
 190         } else if (ssid->wep_key_len[0] || ssid->wep_key_len[1] ||
 191                    ssid->wep_key_len[2] || ssid->wep_key_len[3]) {
 192                 struct hostapd_wep_keys *wep = &bss->ssid.wep;
 193                 int i;
 194                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 195                         if (ssid->wep_key_len[i] == 0)
 196                                 continue;
 197                         wep->key[i] = os_malloc(ssid->wep_key_len[i]);
 198                         if (wep->key[i] == NULL)
 199                                 return -1;
 200                         os_memcpy(wep->key[i], ssid->wep_key[i],
 201                                   ssid->wep_key_len[i]);
 202                         wep->len[i] = ssid->wep_key_len[i];
 203                 }
 204                 wep->idx = ssid->wep_tx_keyidx;
 205                 wep->keys_set = 1;
 206         }
 207
 208         if (ssid->ap_max_inactivity)
 209                 bss->ap_max_inactivity = ssid->ap_max_inactivity;
 210
 211         if (ssid->dtim_period)
 212                 bss->dtim_period = ssid->dtim_period;
 213
 214         /* Select group cipher based on the enabled pairwise cipher suites */
 215         pairwise = 0;
 216         if (bss->wpa & 1)
 217                 pairwise |= bss->wpa_pairwise;
 218         if (bss->wpa & 2) {
 219                 if (bss->rsn_pairwise == 0)
 220                         bss->rsn_pairwise = bss->wpa_pairwise;
 221                 pairwise |= bss->rsn_pairwise;
 222         }
 223         if (pairwise & WPA_CIPHER_TKIP)
 224                 bss->wpa_group = WPA_CIPHER_TKIP;
 225         else if ((pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) ==
 226                  WPA_CIPHER_GCMP)
 227                 bss->wpa_group = WPA_CIPHER_GCMP;
 228         else
 229                 bss->wpa_group = WPA_CIPHER_CCMP;
 230
 231         if (bss->wpa && bss->ieee802_1x)
 232                 bss->ssid.security_policy = SECURITY_WPA;
 233         else if (bss->wpa)
 234                 bss->ssid.security_policy = SECURITY_WPA_PSK;
 235         else if (bss->ieee802_1x) {
 236                 int cipher = WPA_CIPHER_NONE;
 237                 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
 238                 bss->ssid.wep.default_len = bss->default_wep_key_len;
 239                 if (bss->default_wep_key_len)
 240                         cipher = bss->default_wep_key_len >= 13 ?
 241                                 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
 242                 bss->wpa_group = cipher;
 243                 bss->wpa_pairwise = cipher;
 244                 bss->rsn_pairwise = cipher;
 245         } else if (bss->ssid.wep.keys_set) {
 246                 int cipher = WPA_CIPHER_WEP40;
 247                 if (bss->ssid.wep.len[0] >= 13)
 248                         cipher = WPA_CIPHER_WEP104;
 249                 bss->ssid.security_policy = SECURITY_STATIC_WEP;
 250                 bss->wpa_group = cipher;
 251                 bss->wpa_pairwise = cipher;
 252                 bss->rsn_pairwise = cipher;
 253         } else {
 254                 bss->ssid.security_policy = SECURITY_PLAINTEXT;
 255                 bss->wpa_group = WPA_CIPHER_NONE;
 256                 bss->wpa_pairwise = WPA_CIPHER_NONE;
 257                 bss->rsn_pairwise = WPA_CIPHER_NONE;
 258         }
 259
 260 #ifdef CONFIG_WPS
 261         /*
 262          * Enable WPS by default for open and WPA/WPA2-Personal network, but
 263          * require user interaction to actually use it. Only the internal
 264          * Registrar is supported.
 265          */
 266         if (bss->ssid.security_policy != SECURITY_WPA_PSK &&
 267             bss->ssid.security_policy != SECURITY_PLAINTEXT)
 268                 goto no_wps;
 269 #ifdef CONFIG_WPS2
 270         if (bss->ssid.security_policy == SECURITY_WPA_PSK &&
 271             (!(pairwise & WPA_CIPHER_CCMP) || !(bss->wpa & 2)))
 272                 goto no_wps; /* WPS2 does not allow WPA/TKIP-only
 273                               * configuration */
 274 #endif /* CONFIG_WPS2 */
 275         bss->eap_server = 1;
 276
 277         if (!ssid->ignore_broadcast_ssid)
 278                 bss->wps_state = 2;
 279
 280         bss->ap_setup_locked = 2;
 281         if (wpa_s->conf->config_methods)
 282                 bss->config_methods = os_strdup(wpa_s->conf->config_methods);
 283         os_memcpy(bss->device_type, wpa_s->conf->device_type,
 284                   WPS_DEV_TYPE_LEN);
 285         if (wpa_s->conf->device_name) {
 286                 bss->device_name = os_strdup(wpa_s->conf->device_name);
 287                 bss->friendly_name = os_strdup(wpa_s->conf->device_name);
 288         }
 289         if (wpa_s->conf->manufacturer)
 290                 bss->manufacturer = os_strdup(wpa_s->conf->manufacturer);
 291         if (wpa_s->conf->model_name)
 292                 bss->model_name = os_strdup(wpa_s->conf->model_name);
 293         if (wpa_s->conf->model_number)
 294                 bss->model_number = os_strdup(wpa_s->conf->model_number);
 295         if (wpa_s->conf->serial_number)
 296                 bss->serial_number = os_strdup(wpa_s->conf->serial_number);
 297         if (is_nil_uuid(wpa_s->conf->uuid))
 298                 os_memcpy(bss->uuid, wpa_s->wps->uuid, WPS_UUID_LEN);
 299         else
 300                 os_memcpy(bss->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
 301         os_memcpy(bss->os_version, wpa_s->conf->os_version, 4);
 302         bss->pbc_in_m1 = wpa_s->conf->pbc_in_m1;
 303 no_wps:
 304 #endif /* CONFIG_WPS */
 305
 306         if (wpa_s->max_stations &&
 307             wpa_s->max_stations < wpa_s->conf->max_num_sta)
 308                 bss->max_num_sta = wpa_s->max_stations;
 309         else
 310                 bss->max_num_sta = wpa_s->conf->max_num_sta;
 311
 312         bss->disassoc_low_ack = wpa_s->conf->disassoc_low_ack;
 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         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         if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
 470                 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
 471         else if (ssid->pairwise_cipher & WPA_CIPHER_GCMP)
 472                 wpa_s->pairwise_cipher = WPA_CIPHER_GCMP;
 473         else if (ssid->pairwise_cipher & WPA_CIPHER_TKIP)
 474                 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
 475         else if (ssid->pairwise_cipher & WPA_CIPHER_NONE)
 476                 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 477         else {
 478                 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
 479                            "cipher.");
 480                 return -1;
 481         }
 482         params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
 483         params.group_suite = params.pairwise_suite;
 484
 485 #ifdef CONFIG_P2P
 486         if (ssid->mode == WPAS_MODE_P2P_GO ||
 487             ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 488                 params.p2p = 1;
 489 #endif /* CONFIG_P2P */
 490
 491         if (wpa_s->parent->set_ap_uapsd)
 492                 params.uapsd = wpa_s->parent->ap_uapsd;
 493         else
 494                 params.uapsd = -1;
 495
 496         if (wpa_drv_associate(wpa_s, &params) < 0) {
 497                 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
 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
 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 #endif /* CONFIG_WPS */
 870
 871
 872 #ifdef CONFIG_CTRL_IFACE
 873
 874 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
 875                             char *buf, size_t buflen)
 876 {
 877         if (wpa_s->ap_iface == NULL)
 878                 return -1;
 879         return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
 880                                             buf, buflen);
 881 }
 882
 883
 884 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
 885                       char *buf, size_t buflen)
 886 {
 887         if (wpa_s->ap_iface == NULL)
 888                 return -1;
 889         return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
 890                                       buf, buflen);
 891 }
 892
 893
 894 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
 895                            char *buf, size_t buflen)
 896 {
 897         if (wpa_s->ap_iface == NULL)
 898                 return -1;
 899         return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
 900                                            buf, buflen);
 901 }
 902
 903
 904 int ap_ctrl_iface_sta_disassociate(struct wpa_supplicant *wpa_s,
 905                                    const char *txtaddr)
 906 {
 907         if (wpa_s->ap_iface == NULL)
 908                 return -1;
 909         return hostapd_ctrl_iface_disassociate(wpa_s->ap_iface->bss[0],
 910                                                txtaddr);
 911 }
 912
 913
 914 int ap_ctrl_iface_sta_deauthenticate(struct wpa_supplicant *wpa_s,
 915                                      const char *txtaddr)
 916 {
 917         if (wpa_s->ap_iface == NULL)
 918                 return -1;
 919         return hostapd_ctrl_iface_deauthenticate(wpa_s->ap_iface->bss[0],
 920                                                  txtaddr);
 921 }
 922
 923
 924 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
 925                                  size_t buflen, int verbose)
 926 {
 927         char *pos = buf, *end = buf + buflen;
 928         int ret;
 929         struct hostapd_bss_config *conf;
 930
 931         if (wpa_s->ap_iface == NULL)
 932                 return -1;
 933
 934         conf = wpa_s->ap_iface->bss[0]->conf;
 935         if (conf->wpa == 0)
 936                 return 0;
 937
 938         ret = os_snprintf(pos, end - pos,
 939                           "pairwise_cipher=%s\n"
 940                           "group_cipher=%s\n"
 941                           "key_mgmt=%s\n",
 942                           wpa_cipher_txt(conf->rsn_pairwise),
 943                           wpa_cipher_txt(conf->wpa_group),
 944                           wpa_key_mgmt_txt(conf->wpa_key_mgmt,
 945                                            conf->wpa));
 946         if (ret < 0 || ret >= end - pos)
 947                 return pos - buf;
 948         pos += ret;
 949         return pos - buf;
 950 }
 951
 952 #endif /* CONFIG_CTRL_IFACE */
 953
 954
 955 int wpa_supplicant_ap_update_beacon(struct wpa_supplicant *wpa_s)
 956 {
 957         struct hostapd_iface *iface = wpa_s->ap_iface;
 958         struct wpa_ssid *ssid = wpa_s->current_ssid;
 959         struct hostapd_data *hapd;
 960
 961         if (ssid == NULL || wpa_s->ap_iface == NULL ||
 962             ssid->mode == WPAS_MODE_INFRA ||
 963             ssid->mode == WPAS_MODE_IBSS)
 964                 return -1;
 965
 966 #ifdef CONFIG_P2P
 967         if (ssid->mode == WPAS_MODE_P2P_GO)
 968                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 969         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 970                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 971                         P2P_GROUP_FORMATION;
 972 #endif /* CONFIG_P2P */
 973
 974         hapd = iface->bss[0];
 975         if (hapd->drv_priv == NULL)
 976                 return -1;
 977         ieee802_11_set_beacons(iface);
 978         hostapd_set_ap_wps_ie(hapd);
 979
 980         return 0;
 981 }
 982
 983
 984 void wpas_ap_ch_switch(struct wpa_supplicant *wpa_s, int freq, int ht,
 985                        int offset)
 986 {
 987         if (!wpa_s->ap_iface)
 988                 return;
 989
 990         wpa_s->assoc_freq = freq;
 991         hostapd_event_ch_switch(wpa_s->ap_iface->bss[0], freq, ht, offset);
 992 }
 993
 994
 995 int wpa_supplicant_ap_mac_addr_filter(struct wpa_supplicant *wpa_s,
 996                                       const u8 *addr)
 997 {
 998         struct hostapd_data *hapd;
 999         struct hostapd_bss_config *conf;
1000
1001         if (!wpa_s->ap_iface)
1002                 return -1;
1003
1004         if (addr)
1005                 wpa_printf(MSG_DEBUG, "AP: Set MAC address filter: " MACSTR,
1006                            MAC2STR(addr));
1007         else
1008                 wpa_printf(MSG_DEBUG, "AP: Clear MAC address filter");
1009
1010         hapd = wpa_s->ap_iface->bss[0];
1011         conf = hapd->conf;
1012
1013         os_free(conf->accept_mac);
1014         conf->accept_mac = NULL;
1015         conf->num_accept_mac = 0;
1016         os_free(conf->deny_mac);
1017         conf->deny_mac = NULL;
1018         conf->num_deny_mac = 0;
1019
1020         if (addr == NULL) {
1021                 conf->macaddr_acl = ACCEPT_UNLESS_DENIED;
1022                 return 0;
1023         }
1024
1025         conf->macaddr_acl = DENY_UNLESS_ACCEPTED;
1026         conf->accept_mac = os_zalloc(sizeof(struct mac_acl_entry));
1027         if (conf->accept_mac == NULL)
1028                 return -1;
1029         os_memcpy(conf->accept_mac[0].addr, addr, ETH_ALEN);
1030         conf->num_accept_mac = 1;
1031
1032         return 0;
1033 }