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 program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Alternatively, this software may be distributed under the terms of BSD
  11  * license.
  12  *
  13  * See README and COPYING for more details.
  14  */
  15
  16 #include "utils/includes.h"
  17
  18 #include "utils/common.h"
  19 #include "utils/eloop.h"
  20 #include "utils/uuid.h"
  21 #include "common/ieee802_11_defs.h"
  22 #include "common/wpa_ctrl.h"
  23 #include "ap/hostapd.h"
  24 #include "ap/ap_config.h"
  25 #include "ap/ap_drv_ops.h"
  26 #ifdef NEED_AP_MLME
  27 #include "ap/ieee802_11.h"
  28 #endif /* NEED_AP_MLME */
  29 #include "ap/beacon.h"
  30 #include "ap/ieee802_1x.h"
  31 #include "ap/wps_hostapd.h"
  32 #include "ap/ctrl_iface_ap.h"
  33 #include "wps/wps.h"
  34 #include "common/ieee802_11_defs.h"
  35 #include "config_ssid.h"
  36 #include "config.h"
  37 #include "wpa_supplicant_i.h"
  38 #include "driver_i.h"
  39 #include "p2p_supplicant.h"
  40 #include "ap.h"
  41 #include "ap/sta_info.h"
  42 #include "notify.h"
  43
  44
  45 #ifdef CONFIG_WPS
  46 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
  47 #endif /* CONFIG_WPS */
  48
  49
  50 static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
  51                                   struct wpa_ssid *ssid,
  52                                   struct hostapd_config *conf)
  53 {
  54         struct hostapd_bss_config *bss = &conf->bss[0];
  55         int pairwise;
  56
  57         conf->driver = wpa_s->driver;
  58
  59         os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
  60
  61         if (ssid->frequency == 0) {
  62                 /* default channel 11 */
  63                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
  64                 conf->channel = 11;
  65         } else if (ssid->frequency >= 2412 && ssid->frequency <= 2472) {
  66                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
  67                 conf->channel = (ssid->frequency - 2407) / 5;
  68         } else if ((ssid->frequency >= 5180 && ssid->frequency <= 5240) ||
  69                    (ssid->frequency >= 5745 && ssid->frequency <= 5825)) {
  70                 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
  71                 conf->channel = (ssid->frequency - 5000) / 5;
  72         } else {
  73                 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
  74                            ssid->frequency);
  75                 return -1;
  76         }
  77
  78         /* TODO: enable HT40 if driver supports it;
  79          * drop to 11b if driver does not support 11g */
  80
  81 #ifdef CONFIG_IEEE80211N
  82         /*
  83          * Enable HT20 if the driver supports it, by setting conf->ieee80211n
  84          * and a mask of allowed capabilities within conf->ht_capab.
  85          * Using default config settings for: conf->ht_op_mode_fixed,
  86          * conf->secondary_channel, conf->require_ht
  87          */
  88         if (wpa_s->hw.modes) {
  89                 struct hostapd_hw_modes *mode = NULL;
  90                 int i;
  91                 for (i = 0; i < wpa_s->hw.num_modes; i++) {
  92                         if (wpa_s->hw.modes[i].mode == conf->hw_mode) {
  93                                 mode = &wpa_s->hw.modes[i];
  94                                 break;
  95                         }
  96                 }
  97                 if (mode && mode->ht_capab) {
  98                         conf->ieee80211n = 1;
  99
 100                         /*
 101                          * white-list capabilities that won't cause issues
 102                          * to connecting stations, while leaving the current
 103                          * capabilities intact (currently disabled SMPS).
 104                          */
 105                         conf->ht_capab |= mode->ht_capab &
 106                                 (HT_CAP_INFO_GREEN_FIELD |
 107                                  HT_CAP_INFO_SHORT_GI20MHZ |
 108                                  HT_CAP_INFO_SHORT_GI40MHZ |
 109                                  HT_CAP_INFO_RX_STBC_MASK |
 110                                  HT_CAP_INFO_MAX_AMSDU_SIZE);
 111                 }
 112         }
 113 #endif /* CONFIG_IEEE80211N */
 114
 115 #ifdef CONFIG_P2P
 116         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
 117                 /* Remove 802.11b rates from supported and basic rate sets */
 118                 int *list = os_malloc(4 * sizeof(int));
 119                 if (list) {
 120                         list[0] = 60;
 121                         list[1] = 120;
 122                         list[2] = 240;
 123                         list[3] = -1;
 124                 }
 125                 conf->basic_rates = list;
 126
 127                 list = os_malloc(9 * sizeof(int));
 128                 if (list) {
 129                         list[0] = 60;
 130                         list[1] = 90;
 131                         list[2] = 120;
 132                         list[3] = 180;
 133                         list[4] = 240;
 134                         list[5] = 360;
 135                         list[6] = 480;
 136                         list[7] = 540;
 137                         list[8] = -1;
 138                 }
 139                 conf->supported_rates = list;
 140         }
 141
 142         bss->isolate = !wpa_s->conf->p2p_intra_bss;
 143 #endif /* CONFIG_P2P */
 144
 145         if (ssid->ssid_len == 0) {
 146                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 147                 return -1;
 148         }
 149         os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
 150         bss->ssid.ssid[ssid->ssid_len] = '\0';
 151         bss->ssid.ssid_len = ssid->ssid_len;
 152         bss->ssid.ssid_set = 1;
 153
 154         if (ssid->auth_alg)
 155                 bss->auth_algs = ssid->auth_alg;
 156
 157         if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
 158                 bss->wpa = ssid->proto;
 159         bss->wpa_key_mgmt = ssid->key_mgmt;
 160         bss->wpa_pairwise = ssid->pairwise_cipher;
 161         if (ssid->passphrase) {
 162                 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
 163         } else if (ssid->psk_set) {
 164                 os_free(bss->ssid.wpa_psk);
 165                 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
 166                 if (bss->ssid.wpa_psk == NULL)
 167                         return -1;
 168                 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
 169                 bss->ssid.wpa_psk->group = 1;
 170         } else if (ssid->wep_key_len[0] || ssid->wep_key_len[1] ||
 171                    ssid->wep_key_len[2] || ssid->wep_key_len[3]) {
 172                 struct hostapd_wep_keys *wep = &bss->ssid.wep;
 173                 int i;
 174                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 175                         if (ssid->wep_key_len[i] == 0)
 176                                 continue;
 177                         wep->key[i] = os_malloc(ssid->wep_key_len[i]);
 178                         if (wep->key[i] == NULL)
 179                                 return -1;
 180                         os_memcpy(wep->key[i], ssid->wep_key[i],
 181                                   ssid->wep_key_len[i]);
 182                         wep->len[i] = ssid->wep_key_len[i];
 183                 }
 184                 wep->idx = ssid->wep_tx_keyidx;
 185                 wep->keys_set = 1;
 186         }
 187
 188         /* Select group cipher based on the enabled pairwise cipher suites */
 189         pairwise = 0;
 190         if (bss->wpa & 1)
 191                 pairwise |= bss->wpa_pairwise;
 192         if (bss->wpa & 2) {
 193                 if (bss->rsn_pairwise == 0)
 194                         bss->rsn_pairwise = bss->wpa_pairwise;
 195                 pairwise |= bss->rsn_pairwise;
 196         }
 197         if (pairwise & WPA_CIPHER_TKIP)
 198                 bss->wpa_group = WPA_CIPHER_TKIP;
 199         else
 200                 bss->wpa_group = WPA_CIPHER_CCMP;
 201
 202         if (bss->wpa && bss->ieee802_1x)
 203                 bss->ssid.security_policy = SECURITY_WPA;
 204         else if (bss->wpa)
 205                 bss->ssid.security_policy = SECURITY_WPA_PSK;
 206         else if (bss->ieee802_1x) {
 207                 int cipher = WPA_CIPHER_NONE;
 208                 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
 209                 bss->ssid.wep.default_len = bss->default_wep_key_len;
 210                 if (bss->default_wep_key_len)
 211                         cipher = bss->default_wep_key_len >= 13 ?
 212                                 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
 213                 bss->wpa_group = cipher;
 214                 bss->wpa_pairwise = cipher;
 215                 bss->rsn_pairwise = cipher;
 216         } else if (bss->ssid.wep.keys_set) {
 217                 int cipher = WPA_CIPHER_WEP40;
 218                 if (bss->ssid.wep.len[0] >= 13)
 219                         cipher = WPA_CIPHER_WEP104;
 220                 bss->ssid.security_policy = SECURITY_STATIC_WEP;
 221                 bss->wpa_group = cipher;
 222                 bss->wpa_pairwise = cipher;
 223                 bss->rsn_pairwise = cipher;
 224         } else {
 225                 bss->ssid.security_policy = SECURITY_PLAINTEXT;
 226                 bss->wpa_group = WPA_CIPHER_NONE;
 227                 bss->wpa_pairwise = WPA_CIPHER_NONE;
 228                 bss->rsn_pairwise = WPA_CIPHER_NONE;
 229         }
 230
 231 #ifdef CONFIG_WPS
 232         /*
 233          * Enable WPS by default for open and WPA/WPA2-Personal network, but
 234          * require user interaction to actually use it. Only the internal
 235          * Registrar is supported.
 236          */
 237         if (bss->ssid.security_policy != SECURITY_WPA_PSK &&
 238             bss->ssid.security_policy != SECURITY_PLAINTEXT)
 239                 goto no_wps;
 240 #ifdef CONFIG_WPS2
 241         if (bss->ssid.security_policy == SECURITY_WPA_PSK &&
 242             (!(pairwise & WPA_CIPHER_CCMP) || !(bss->wpa & 2)))
 243                 goto no_wps; /* WPS2 does not allow WPA/TKIP-only
 244                               * configuration */
 245 #endif /* CONFIG_WPS2 */
 246         bss->eap_server = 1;
 247         bss->wps_state = 2;
 248         bss->ap_setup_locked = 2;
 249         if (wpa_s->conf->config_methods)
 250                 bss->config_methods = os_strdup(wpa_s->conf->config_methods);
 251         os_memcpy(bss->device_type, wpa_s->conf->device_type,
 252                   WPS_DEV_TYPE_LEN);
 253         if (wpa_s->conf->device_name) {
 254                 bss->device_name = os_strdup(wpa_s->conf->device_name);
 255                 bss->friendly_name = os_strdup(wpa_s->conf->device_name);
 256         }
 257         if (wpa_s->conf->manufacturer)
 258                 bss->manufacturer = os_strdup(wpa_s->conf->manufacturer);
 259         if (wpa_s->conf->model_name)
 260                 bss->model_name = os_strdup(wpa_s->conf->model_name);
 261         if (wpa_s->conf->model_number)
 262                 bss->model_number = os_strdup(wpa_s->conf->model_number);
 263         if (wpa_s->conf->serial_number)
 264                 bss->serial_number = os_strdup(wpa_s->conf->serial_number);
 265         if (is_nil_uuid(wpa_s->conf->uuid))
 266                 os_memcpy(bss->uuid, wpa_s->wps->uuid, WPS_UUID_LEN);
 267         else
 268                 os_memcpy(bss->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
 269         os_memcpy(bss->os_version, wpa_s->conf->os_version, 4);
 270 no_wps:
 271 #endif /* CONFIG_WPS */
 272
 273         if (wpa_s->max_stations &&
 274             wpa_s->max_stations < wpa_s->conf->max_num_sta)
 275                 bss->max_num_sta = wpa_s->max_stations;
 276         else
 277                 bss->max_num_sta = wpa_s->conf->max_num_sta;
 278
 279         bss->disassoc_low_ack = wpa_s->conf->disassoc_low_ack;
 280
 281         return 0;
 282 }
 283
 284
 285 static void ap_public_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 286 {
 287 #ifdef CONFIG_P2P
 288         struct wpa_supplicant *wpa_s = ctx;
 289         const struct ieee80211_mgmt *mgmt;
 290         size_t hdr_len;
 291
 292         mgmt = (const struct ieee80211_mgmt *) buf;
 293         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 294         if (hdr_len > len)
 295                 return;
 296         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 297                            mgmt->u.action.category,
 298                            &mgmt->u.action.u.vs_public_action.action,
 299                            len - hdr_len, freq);
 300 #endif /* CONFIG_P2P */
 301 }
 302
 303
 304 static void ap_wps_event_cb(void *ctx, enum wps_event event,
 305                             union wps_event_data *data)
 306 {
 307 #ifdef CONFIG_P2P
 308         struct wpa_supplicant *wpa_s = ctx;
 309
 310         if (event == WPS_EV_FAIL) {
 311                 struct wps_event_fail *fail = &data->fail;
 312
 313                 if (wpa_s->parent && wpa_s->parent != wpa_s &&
 314                     wpa_s == wpa_s->global->p2p_group_formation) {
 315                         /*
 316                          * src/ap/wps_hostapd.c has already sent this on the
 317                          * main interface, so only send on the parent interface
 318                          * here if needed.
 319                          */
 320                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 321                                 "msg=%d config_error=%d",
 322                                 fail->msg, fail->config_error);
 323                 }
 324                 wpas_p2p_wps_failed(wpa_s, fail);
 325         }
 326 #endif /* CONFIG_P2P */
 327 }
 328
 329
 330 static void ap_sta_authorized_cb(void *ctx, const u8 *mac_addr,
 331                                  int authorized)
 332 {
 333         wpas_notify_sta_authorized(ctx, mac_addr, authorized);
 334 }
 335
 336
 337 static int ap_vendor_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 338 {
 339 #ifdef CONFIG_P2P
 340         struct wpa_supplicant *wpa_s = ctx;
 341         const struct ieee80211_mgmt *mgmt;
 342         size_t hdr_len;
 343
 344         mgmt = (const struct ieee80211_mgmt *) buf;
 345         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 346         if (hdr_len > len)
 347                 return -1;
 348         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 349                            mgmt->u.action.category,
 350                            &mgmt->u.action.u.vs_public_action.action,
 351                            len - hdr_len, freq);
 352 #endif /* CONFIG_P2P */
 353         return 0;
 354 }
 355
 356
 357 static int ap_probe_req_rx(void *ctx, const u8 *sa, const u8 *da,
 358                            const u8 *bssid, const u8 *ie, size_t ie_len)
 359 {
 360 #ifdef CONFIG_P2P
 361         struct wpa_supplicant *wpa_s = ctx;
 362         return wpas_p2p_probe_req_rx(wpa_s, sa, da, bssid, ie, ie_len);
 363 #else /* CONFIG_P2P */
 364         return 0;
 365 #endif /* CONFIG_P2P */
 366 }
 367
 368
 369 static void ap_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 370                                   const u8 *uuid_e)
 371 {
 372 #ifdef CONFIG_P2P
 373         struct wpa_supplicant *wpa_s = ctx;
 374         wpas_p2p_wps_success(wpa_s, mac_addr, 1);
 375 #endif /* CONFIG_P2P */
 376 }
 377
 378
 379 static void wpas_ap_configured_cb(void *ctx)
 380 {
 381         struct wpa_supplicant *wpa_s = ctx;
 382
 383         wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 384
 385         if (wpa_s->ap_configured_cb)
 386                 wpa_s->ap_configured_cb(wpa_s->ap_configured_cb_ctx,
 387                                         wpa_s->ap_configured_cb_data);
 388 }
 389
 390
 391 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
 392                              struct wpa_ssid *ssid)
 393 {
 394         struct wpa_driver_associate_params params;
 395         struct hostapd_iface *hapd_iface;
 396         struct hostapd_config *conf;
 397         size_t i;
 398
 399         if (ssid->ssid == NULL || ssid->ssid_len == 0) {
 400                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 401                 return -1;
 402         }
 403
 404         wpa_supplicant_ap_deinit(wpa_s);
 405
 406         wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
 407                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 408
 409         os_memset(&params, 0, sizeof(params));
 410         params.ssid = ssid->ssid;
 411         params.ssid_len = ssid->ssid_len;
 412         switch (ssid->mode) {
 413         case WPAS_MODE_INFRA:
 414                 params.mode = IEEE80211_MODE_INFRA;
 415                 break;
 416         case WPAS_MODE_IBSS:
 417                 params.mode = IEEE80211_MODE_IBSS;
 418                 break;
 419         case WPAS_MODE_AP:
 420         case WPAS_MODE_P2P_GO:
 421         case WPAS_MODE_P2P_GROUP_FORMATION:
 422                 params.mode = IEEE80211_MODE_AP;
 423                 break;
 424         }
 425         params.freq = ssid->frequency;
 426
 427         params.wpa_proto = ssid->proto;
 428         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK)
 429                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
 430         else
 431                 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
 432         params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
 433
 434         if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
 435                 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
 436         else if (ssid->pairwise_cipher & WPA_CIPHER_TKIP)
 437                 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
 438         else if (ssid->pairwise_cipher & WPA_CIPHER_NONE)
 439                 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 440         else {
 441                 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
 442                            "cipher.");
 443                 return -1;
 444         }
 445         params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
 446         params.group_suite = params.pairwise_suite;
 447
 448 #ifdef CONFIG_P2P
 449         if (ssid->mode == WPAS_MODE_P2P_GO ||
 450             ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 451                 params.p2p = 1;
 452 #endif /* CONFIG_P2P */
 453
 454         if (wpa_s->parent->set_ap_uapsd)
 455                 params.uapsd = wpa_s->parent->ap_uapsd;
 456         else
 457                 params.uapsd = -1;
 458
 459         if (wpa_drv_associate(wpa_s, &params) < 0) {
 460                 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
 461                 return -1;
 462         }
 463
 464         wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
 465         if (hapd_iface == NULL)
 466                 return -1;
 467         hapd_iface->owner = wpa_s;
 468         hapd_iface->drv_flags = wpa_s->drv_flags;
 469         hapd_iface->probe_resp_offloads = wpa_s->probe_resp_offloads;
 470
 471         wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
 472         if (conf == NULL) {
 473                 wpa_supplicant_ap_deinit(wpa_s);
 474                 return -1;
 475         }
 476
 477         if (params.uapsd > 0) {
 478                 conf->bss->wmm_enabled = 1;
 479                 conf->bss->wmm_uapsd = 1;
 480         }
 481
 482         if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
 483                 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
 484                 wpa_supplicant_ap_deinit(wpa_s);
 485                 return -1;
 486         }
 487
 488 #ifdef CONFIG_P2P
 489         if (ssid->mode == WPAS_MODE_P2P_GO)
 490                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 491         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 492                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 493                         P2P_GROUP_FORMATION;
 494 #endif /* CONFIG_P2P */
 495
 496         hapd_iface->num_bss = conf->num_bss;
 497         hapd_iface->bss = os_zalloc(conf->num_bss *
 498                                     sizeof(struct hostapd_data *));
 499         if (hapd_iface->bss == NULL) {
 500                 wpa_supplicant_ap_deinit(wpa_s);
 501                 return -1;
 502         }
 503
 504         for (i = 0; i < conf->num_bss; i++) {
 505                 hapd_iface->bss[i] =
 506                         hostapd_alloc_bss_data(hapd_iface, conf,
 507                                                &conf->bss[i]);
 508                 if (hapd_iface->bss[i] == NULL) {
 509                         wpa_supplicant_ap_deinit(wpa_s);
 510                         return -1;
 511                 }
 512
 513                 hapd_iface->bss[i]->msg_ctx = wpa_s;
 514                 hapd_iface->bss[i]->msg_ctx_parent = wpa_s->parent;
 515                 hapd_iface->bss[i]->public_action_cb = ap_public_action_rx;
 516                 hapd_iface->bss[i]->public_action_cb_ctx = wpa_s;
 517                 hapd_iface->bss[i]->vendor_action_cb = ap_vendor_action_rx;
 518                 hapd_iface->bss[i]->vendor_action_cb_ctx = wpa_s;
 519                 hostapd_register_probereq_cb(hapd_iface->bss[i],
 520                                              ap_probe_req_rx, wpa_s);
 521                 hapd_iface->bss[i]->wps_reg_success_cb = ap_wps_reg_success_cb;
 522                 hapd_iface->bss[i]->wps_reg_success_cb_ctx = wpa_s;
 523                 hapd_iface->bss[i]->wps_event_cb = ap_wps_event_cb;
 524                 hapd_iface->bss[i]->wps_event_cb_ctx = wpa_s;
 525                 hapd_iface->bss[i]->sta_authorized_cb = ap_sta_authorized_cb;
 526                 hapd_iface->bss[i]->sta_authorized_cb_ctx = wpa_s;
 527 #ifdef CONFIG_P2P
 528                 hapd_iface->bss[i]->p2p = wpa_s->global->p2p;
 529                 hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(
 530                         wpa_s, ssid->p2p_persistent_group,
 531                         ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION);
 532 #endif /* CONFIG_P2P */
 533                 hapd_iface->bss[i]->setup_complete_cb = wpas_ap_configured_cb;
 534                 hapd_iface->bss[i]->setup_complete_cb_ctx = wpa_s;
 535         }
 536
 537         os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
 538         hapd_iface->bss[0]->driver = wpa_s->driver;
 539         hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
 540
 541         wpa_s->current_ssid = ssid;
 542         os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
 543         wpa_s->assoc_freq = ssid->frequency;
 544
 545         if (hostapd_setup_interface(wpa_s->ap_iface)) {
 546                 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
 547                 wpa_supplicant_ap_deinit(wpa_s);
 548                 return -1;
 549         }
 550
 551         return 0;
 552 }
 553
 554
 555 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
 556 {
 557 #ifdef CONFIG_WPS
 558         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 559 #endif /* CONFIG_WPS */
 560
 561         if (wpa_s->ap_iface == NULL)
 562                 return;
 563
 564         wpa_s->current_ssid = NULL;
 565         wpa_s->assoc_freq = 0;
 566         wpa_s->reassociated_connection = 0;
 567 #ifdef CONFIG_P2P
 568         if (wpa_s->ap_iface->bss)
 569                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
 570         wpas_p2p_group_deinit(wpa_s);
 571 #endif /* CONFIG_P2P */
 572         hostapd_interface_deinit(wpa_s->ap_iface);
 573         hostapd_interface_free(wpa_s->ap_iface);
 574         wpa_s->ap_iface = NULL;
 575         wpa_drv_deinit_ap(wpa_s);
 576 }
 577
 578
 579 void ap_tx_status(void *ctx, const u8 *addr,
 580                   const u8 *buf, size_t len, int ack)
 581 {
 582 #ifdef NEED_AP_MLME
 583         struct wpa_supplicant *wpa_s = ctx;
 584         hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
 585 #endif /* NEED_AP_MLME */
 586 }
 587
 588
 589 void ap_eapol_tx_status(void *ctx, const u8 *dst,
 590                         const u8 *data, size_t len, int ack)
 591 {
 592 #ifdef NEED_AP_MLME
 593         struct wpa_supplicant *wpa_s = ctx;
 594         hostapd_tx_status(wpa_s->ap_iface->bss[0], dst, data, len, ack);
 595 #endif /* NEED_AP_MLME */
 596 }
 597
 598
 599 void ap_client_poll_ok(void *ctx, const u8 *addr)
 600 {
 601 #ifdef NEED_AP_MLME
 602         struct wpa_supplicant *wpa_s = ctx;
 603         if (wpa_s->ap_iface)
 604                 hostapd_client_poll_ok(wpa_s->ap_iface->bss[0], addr);
 605 #endif /* NEED_AP_MLME */
 606 }
 607
 608
 609 void ap_rx_from_unknown_sta(void *ctx, const u8 *addr, int wds)
 610 {
 611 #ifdef NEED_AP_MLME
 612         struct wpa_supplicant *wpa_s = ctx;
 613         ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], addr, wds);
 614 #endif /* NEED_AP_MLME */
 615 }
 616
 617
 618 void ap_mgmt_rx(void *ctx, struct rx_mgmt *rx_mgmt)
 619 {
 620 #ifdef NEED_AP_MLME
 621         struct wpa_supplicant *wpa_s = ctx;
 622         struct hostapd_frame_info fi;
 623         os_memset(&fi, 0, sizeof(fi));
 624         fi.datarate = rx_mgmt->datarate;
 625         fi.ssi_signal = rx_mgmt->ssi_signal;
 626         ieee802_11_mgmt(wpa_s->ap_iface->bss[0], rx_mgmt->frame,
 627                         rx_mgmt->frame_len, &fi);
 628 #endif /* NEED_AP_MLME */
 629 }
 630
 631
 632 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
 633 {
 634 #ifdef NEED_AP_MLME
 635         struct wpa_supplicant *wpa_s = ctx;
 636         ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
 637 #endif /* NEED_AP_MLME */
 638 }
 639
 640
 641 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
 642                                 const u8 *src_addr, const u8 *buf, size_t len)
 643 {
 644         ieee802_1x_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
 645 }
 646
 647
 648 #ifdef CONFIG_WPS
 649
 650 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 651                               const u8 *p2p_dev_addr)
 652 {
 653         if (!wpa_s->ap_iface)
 654                 return -1;
 655         return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0],
 656                                          p2p_dev_addr);
 657 }
 658
 659
 660 static int wpa_supplicant_ap_wps_sta_cancel(struct hostapd_data *hapd,
 661                                             struct sta_info *sta, void *ctx)
 662 {
 663         if (sta && (sta->flags & WLAN_STA_WPS)) {
 664                 ap_sta_deauthenticate(hapd, sta,
 665                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 666                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 667                            __func__, MAC2STR(sta->addr));
 668                 return 1;
 669         }
 670
 671         return 0;
 672 }
 673
 674
 675 int wpa_supplicant_ap_wps_cancel(struct wpa_supplicant *wpa_s)
 676 {
 677         struct wps_registrar *reg;
 678         int reg_sel = 0, wps_sta = 0;
 679
 680         if (!wpa_s->ap_iface || !wpa_s->ap_iface->bss[0]->wps)
 681                 return -1;
 682
 683         reg = wpa_s->ap_iface->bss[0]->wps->registrar;
 684         reg_sel = wps_registrar_wps_cancel(reg);
 685         wps_sta = ap_for_each_sta(wpa_s->ap_iface->bss[0],
 686                                   wpa_supplicant_ap_wps_sta_cancel, NULL);
 687
 688         if (!reg_sel && !wps_sta) {
 689                 wpa_printf(MSG_DEBUG, "No WPS operation in progress at this "
 690                            "time");
 691                 return -1;
 692         }
 693
 694         /*
 695          * There are 2 cases to return wps cancel as success:
 696          * 1. When wps cancel was initiated but no connection has been
 697          *    established with client yet.
 698          * 2. Client is in the middle of exchanging WPS messages.
 699          */
 700
 701         return 0;
 702 }
 703
 704
 705 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 706                               const char *pin, char *buf, size_t buflen)
 707 {
 708         int ret, ret_len = 0;
 709
 710         if (!wpa_s->ap_iface)
 711                 return -1;
 712
 713         if (pin == NULL) {
 714                 unsigned int rpin = wps_generate_pin();
 715                 ret_len = os_snprintf(buf, buflen, "%08d", rpin);
 716                 pin = buf;
 717         } else
 718                 ret_len = os_snprintf(buf, buflen, "%s", pin);
 719
 720         ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], bssid, "any", pin,
 721                                   0);
 722         if (ret)
 723                 return -1;
 724         return ret_len;
 725 }
 726
 727
 728 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
 729 {
 730         struct wpa_supplicant *wpa_s = eloop_data;
 731         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
 732         wpas_wps_ap_pin_disable(wpa_s);
 733 }
 734
 735
 736 static void wpas_wps_ap_pin_enable(struct wpa_supplicant *wpa_s, int timeout)
 737 {
 738         struct hostapd_data *hapd;
 739
 740         if (wpa_s->ap_iface == NULL)
 741                 return;
 742         hapd = wpa_s->ap_iface->bss[0];
 743         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
 744         hapd->ap_pin_failures = 0;
 745         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 746         if (timeout > 0)
 747                 eloop_register_timeout(timeout, 0,
 748                                        wpas_wps_ap_pin_timeout, wpa_s, NULL);
 749 }
 750
 751
 752 void wpas_wps_ap_pin_disable(struct wpa_supplicant *wpa_s)
 753 {
 754         struct hostapd_data *hapd;
 755
 756         if (wpa_s->ap_iface == NULL)
 757                 return;
 758         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
 759         hapd = wpa_s->ap_iface->bss[0];
 760         os_free(hapd->conf->ap_pin);
 761         hapd->conf->ap_pin = NULL;
 762         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 763 }
 764
 765
 766 const char * wpas_wps_ap_pin_random(struct wpa_supplicant *wpa_s, int timeout)
 767 {
 768         struct hostapd_data *hapd;
 769         unsigned int pin;
 770         char pin_txt[9];
 771
 772         if (wpa_s->ap_iface == NULL)
 773                 return NULL;
 774         hapd = wpa_s->ap_iface->bss[0];
 775         pin = wps_generate_pin();
 776         os_snprintf(pin_txt, sizeof(pin_txt), "%08u", pin);
 777         os_free(hapd->conf->ap_pin);
 778         hapd->conf->ap_pin = os_strdup(pin_txt);
 779         if (hapd->conf->ap_pin == NULL)
 780                 return NULL;
 781         wpas_wps_ap_pin_enable(wpa_s, timeout);
 782
 783         return hapd->conf->ap_pin;
 784 }
 785
 786
 787 const char * wpas_wps_ap_pin_get(struct wpa_supplicant *wpa_s)
 788 {
 789         struct hostapd_data *hapd;
 790         if (wpa_s->ap_iface == NULL)
 791                 return NULL;
 792         hapd = wpa_s->ap_iface->bss[0];
 793         return hapd->conf->ap_pin;
 794 }
 795
 796
 797 int wpas_wps_ap_pin_set(struct wpa_supplicant *wpa_s, const char *pin,
 798                         int timeout)
 799 {
 800         struct hostapd_data *hapd;
 801         char pin_txt[9];
 802         int ret;
 803
 804         if (wpa_s->ap_iface == NULL)
 805                 return -1;
 806         hapd = wpa_s->ap_iface->bss[0];
 807         ret = os_snprintf(pin_txt, sizeof(pin_txt), "%s", pin);
 808         if (ret < 0 || ret >= (int) sizeof(pin_txt))
 809                 return -1;
 810         os_free(hapd->conf->ap_pin);
 811         hapd->conf->ap_pin = os_strdup(pin_txt);
 812         if (hapd->conf->ap_pin == NULL)
 813                 return -1;
 814         wpas_wps_ap_pin_enable(wpa_s, timeout);
 815
 816         return 0;
 817 }
 818
 819
 820 void wpa_supplicant_ap_pwd_auth_fail(struct wpa_supplicant *wpa_s)
 821 {
 822         struct hostapd_data *hapd;
 823
 824         if (wpa_s->ap_iface == NULL)
 825                 return;
 826         hapd = wpa_s->ap_iface->bss[0];
 827
 828         /*
 829          * Registrar failed to prove its knowledge of the AP PIN. Disable AP
 830          * PIN if this happens multiple times to slow down brute force attacks.
 831          */
 832         hapd->ap_pin_failures++;
 833         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u",
 834                    hapd->ap_pin_failures);
 835         if (hapd->ap_pin_failures < 3)
 836                 return;
 837
 838         wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN");
 839         hapd->ap_pin_failures = 0;
 840         os_free(hapd->conf->ap_pin);
 841         hapd->conf->ap_pin = NULL;
 842 }
 843
 844 #endif /* CONFIG_WPS */
 845
 846
 847 #ifdef CONFIG_CTRL_IFACE
 848
 849 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
 850                             char *buf, size_t buflen)
 851 {
 852         if (wpa_s->ap_iface == NULL)
 853                 return -1;
 854         return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
 855                                             buf, buflen);
 856 }
 857
 858
 859 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
 860                       char *buf, size_t buflen)
 861 {
 862         if (wpa_s->ap_iface == NULL)
 863                 return -1;
 864         return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
 865                                       buf, buflen);
 866 }
 867
 868
 869 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
 870                            char *buf, size_t buflen)
 871 {
 872         if (wpa_s->ap_iface == NULL)
 873                 return -1;
 874         return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
 875                                            buf, buflen);
 876 }
 877
 878
 879 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
 880                                  size_t buflen, int verbose)
 881 {
 882         char *pos = buf, *end = buf + buflen;
 883         int ret;
 884         struct hostapd_bss_config *conf;
 885
 886         if (wpa_s->ap_iface == NULL)
 887                 return -1;
 888
 889         conf = wpa_s->ap_iface->bss[0]->conf;
 890         if (conf->wpa == 0)
 891                 return 0;
 892
 893         ret = os_snprintf(pos, end - pos,
 894                           "pairwise_cipher=%s\n"
 895                           "group_cipher=%s\n"
 896                           "key_mgmt=%s\n",
 897                           wpa_cipher_txt(conf->rsn_pairwise),
 898                           wpa_cipher_txt(conf->wpa_group),
 899                           wpa_key_mgmt_txt(conf->wpa_key_mgmt,
 900                                            conf->wpa));
 901         if (ret < 0 || ret >= end - pos)
 902                 return pos - buf;
 903         pos += ret;
 904         return pos - buf;
 905 }
 906
 907 #endif /* CONFIG_CTRL_IFACE */
 908
 909
 910 int wpa_supplicant_ap_update_beacon(struct wpa_supplicant *wpa_s)
 911 {
 912         struct hostapd_iface *iface = wpa_s->ap_iface;
 913         struct wpa_ssid *ssid = wpa_s->current_ssid;
 914         struct hostapd_data *hapd;
 915
 916         if (ssid == NULL || wpa_s->ap_iface == NULL ||
 917             ssid->mode == WPAS_MODE_INFRA ||
 918             ssid->mode == WPAS_MODE_IBSS)
 919                 return -1;
 920
 921 #ifdef CONFIG_P2P
 922         if (ssid->mode == WPAS_MODE_P2P_GO)
 923                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 924         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 925                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 926                         P2P_GROUP_FORMATION;
 927 #endif /* CONFIG_P2P */
 928
 929         hapd = iface->bss[0];
 930         if (hapd->drv_priv == NULL)
 931                 return -1;
 932         ieee802_11_set_beacons(iface);
 933         hostapd_set_ap_wps_ie(hapd);
 934
 935         return 0;
 936 }
 937
 938
 939 int wpa_supplicant_ap_mac_addr_filter(struct wpa_supplicant *wpa_s,
 940                                       const u8 *addr)
 941 {
 942         struct hostapd_data *hapd;
 943         struct hostapd_bss_config *conf;
 944
 945         if (!wpa_s->ap_iface)
 946                 return -1;
 947
 948         if (addr)
 949                 wpa_printf(MSG_DEBUG, "AP: Set MAC address filter: " MACSTR,
 950                            MAC2STR(addr));
 951         else
 952                 wpa_printf(MSG_DEBUG, "AP: Clear MAC address filter");
 953
 954         hapd = wpa_s->ap_iface->bss[0];
 955         conf = hapd->conf;
 956
 957         os_free(conf->accept_mac);
 958         conf->accept_mac = NULL;
 959         conf->num_accept_mac = 0;
 960         os_free(conf->deny_mac);
 961         conf->deny_mac = NULL;
 962         conf->num_deny_mac = 0;
 963
 964         if (addr == NULL) {
 965                 conf->macaddr_acl = ACCEPT_UNLESS_DENIED;
 966                 return 0;
 967         }
 968
 969         conf->macaddr_acl = DENY_UNLESS_ACCEPTED;
 970         conf->accept_mac = os_zalloc(sizeof(struct mac_acl_entry));
 971         if (conf->accept_mac == NULL)
 972                 return -1;
 973         os_memcpy(conf->accept_mac[0].addr, addr, ETH_ALEN);
 974         conf->num_accept_mac = 1;
 975
 976         return 0;
 977 }