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 "eap_common/eap_defs.h"
  34 #include "eap_server/eap_methods.h"
  35 #include "eap_common/eap_wsc_common.h"
  36 #include "wps/wps.h"
  37 #include "common/ieee802_11_defs.h"
  38 #include "config_ssid.h"
  39 #include "config.h"
  40 #include "wpa_supplicant_i.h"
  41 #include "driver_i.h"
  42 #include "p2p_supplicant.h"
  43 #include "ap.h"
  44 #include "ap/sta_info.h"
  45 #include "notify.h"
  46
  47
  48 #ifdef CONFIG_WPS
  49 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
  50 #endif /* CONFIG_WPS */
  51
  52
  53 static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
  54                                   struct wpa_ssid *ssid,
  55                                   struct hostapd_config *conf)
  56 {
  57         struct hostapd_bss_config *bss = &conf->bss[0];
  58         int pairwise;
  59 #ifdef CONFIG_IEEE80211N
  60         struct hostapd_hw_modes *modes;
  61         u16 num_modes, flags;
  62 #endif /* CONFIG_IEEE80211N */
  63
  64         conf->driver = wpa_s->driver;
  65
  66         os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
  67
  68         if (ssid->frequency == 0) {
  69                 /* default channel 11 */
  70                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
  71                 conf->channel = 11;
  72         } else if (ssid->frequency >= 2412 && ssid->frequency <= 2472) {
  73                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
  74                 conf->channel = (ssid->frequency - 2407) / 5;
  75         } else if ((ssid->frequency >= 5180 && ssid->frequency <= 5240) ||
  76                    (ssid->frequency >= 5745 && ssid->frequency <= 5825)) {
  77                 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
  78                 conf->channel = (ssid->frequency - 5000) / 5;
  79         } else {
  80                 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
  81                            ssid->frequency);
  82                 return -1;
  83         }
  84
  85         /* TODO: enable HT40 if driver supports it;
  86          * drop to 11b if driver does not support 11g */
  87
  88 #ifdef CONFIG_IEEE80211N
  89         /*
  90          * Enable HT20 if the driver supports it, by setting conf->ieee80211n.
  91          * Using default config settings for: conf->ht_op_mode_fixed,
  92          * conf->ht_capab, conf->secondary_channel, conf->require_ht
  93          */
  94         modes = wpa_drv_get_hw_feature_data(wpa_s, &num_modes, &flags);
  95         if (modes) {
  96                 struct hostapd_hw_modes *mode = NULL;
  97                 int i;
  98                 for (i = 0; i < num_modes; i++) {
  99                         if (modes[i].mode == conf->hw_mode) {
 100                                 mode = &modes[i];
 101                                 break;
 102                         }
 103                 }
 104                 if (mode && mode->ht_capab)
 105                         conf->ieee80211n = 1;
 106                 ieee80211_sta_free_hw_features(modes, num_modes);
 107                 modes = NULL;
 108         }
 109 #endif /* CONFIG_IEEE80211N */
 110
 111 #ifdef CONFIG_P2P
 112         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
 113                 /* Remove 802.11b rates from supported and basic rate sets */
 114                 int *list = os_malloc(4 * sizeof(int));
 115                 if (list) {
 116                         list[0] = 60;
 117                         list[1] = 120;
 118                         list[2] = 240;
 119                         list[3] = -1;
 120                 }
 121                 conf->basic_rates = list;
 122
 123                 list = os_malloc(9 * sizeof(int));
 124                 if (list) {
 125                         list[0] = 60;
 126                         list[1] = 90;
 127                         list[2] = 120;
 128                         list[3] = 180;
 129                         list[4] = 240;
 130                         list[5] = 360;
 131                         list[6] = 480;
 132                         list[7] = 540;
 133                         list[8] = -1;
 134                 }
 135                 conf->supported_rates = list;
 136         }
 137
 138         bss->isolate = !wpa_s->conf->p2p_intra_bss;
 139 #endif /* CONFIG_P2P */
 140
 141         if (ssid->ssid_len == 0) {
 142                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 143                 return -1;
 144         }
 145         os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
 146         bss->ssid.ssid[ssid->ssid_len] = '\0';
 147         bss->ssid.ssid_len = ssid->ssid_len;
 148         bss->ssid.ssid_set = 1;
 149
 150         if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
 151                 bss->wpa = ssid->proto;
 152         bss->wpa_key_mgmt = ssid->key_mgmt;
 153         bss->wpa_pairwise = ssid->pairwise_cipher;
 154         if (ssid->passphrase) {
 155                 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
 156         } else if (ssid->psk_set) {
 157                 os_free(bss->ssid.wpa_psk);
 158                 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
 159                 if (bss->ssid.wpa_psk == NULL)
 160                         return -1;
 161                 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
 162                 bss->ssid.wpa_psk->group = 1;
 163         } else if (ssid->wep_key_len[0] || ssid->wep_key_len[1] ||
 164                    ssid->wep_key_len[2] || ssid->wep_key_len[3]) {
 165                 struct hostapd_wep_keys *wep = &bss->ssid.wep;
 166                 int i;
 167                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 168                         if (ssid->wep_key_len[i] == 0)
 169                                 continue;
 170                         wep->key[i] = os_malloc(ssid->wep_key_len[i]);
 171                         if (wep->key[i] == NULL)
 172                                 return -1;
 173                         os_memcpy(wep->key[i], ssid->wep_key[i],
 174                                   ssid->wep_key_len[i]);
 175                         wep->len[i] = ssid->wep_key_len[i];
 176                 }
 177                 wep->idx = ssid->wep_tx_keyidx;
 178                 wep->keys_set = 1;
 179         }
 180
 181         /* Select group cipher based on the enabled pairwise cipher suites */
 182         pairwise = 0;
 183         if (bss->wpa & 1)
 184                 pairwise |= bss->wpa_pairwise;
 185         if (bss->wpa & 2) {
 186                 if (bss->rsn_pairwise == 0)
 187                         bss->rsn_pairwise = bss->wpa_pairwise;
 188                 pairwise |= bss->rsn_pairwise;
 189         }
 190         if (pairwise & WPA_CIPHER_TKIP)
 191                 bss->wpa_group = WPA_CIPHER_TKIP;
 192         else
 193                 bss->wpa_group = WPA_CIPHER_CCMP;
 194
 195         if (bss->wpa && bss->ieee802_1x)
 196                 bss->ssid.security_policy = SECURITY_WPA;
 197         else if (bss->wpa)
 198                 bss->ssid.security_policy = SECURITY_WPA_PSK;
 199         else if (bss->ieee802_1x) {
 200                 int cipher = WPA_CIPHER_NONE;
 201                 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
 202                 bss->ssid.wep.default_len = bss->default_wep_key_len;
 203                 if (bss->default_wep_key_len)
 204                         cipher = bss->default_wep_key_len >= 13 ?
 205                                 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
 206                 bss->wpa_group = cipher;
 207                 bss->wpa_pairwise = cipher;
 208                 bss->rsn_pairwise = cipher;
 209         } else if (bss->ssid.wep.keys_set) {
 210                 int cipher = WPA_CIPHER_WEP40;
 211                 if (bss->ssid.wep.len[0] >= 13)
 212                         cipher = WPA_CIPHER_WEP104;
 213                 bss->ssid.security_policy = SECURITY_STATIC_WEP;
 214                 bss->wpa_group = cipher;
 215                 bss->wpa_pairwise = cipher;
 216                 bss->rsn_pairwise = cipher;
 217         } else {
 218                 bss->ssid.security_policy = SECURITY_PLAINTEXT;
 219                 bss->wpa_group = WPA_CIPHER_NONE;
 220                 bss->wpa_pairwise = WPA_CIPHER_NONE;
 221                 bss->rsn_pairwise = WPA_CIPHER_NONE;
 222         }
 223
 224 #ifdef CONFIG_WPS
 225         /*
 226          * Enable WPS by default, but require user interaction to actually use
 227          * it. Only the internal Registrar is supported.
 228          */
 229         bss->eap_server = 1;
 230         bss->wps_state = 2;
 231         bss->ap_setup_locked = 2;
 232         if (wpa_s->conf->config_methods)
 233                 bss->config_methods = os_strdup(wpa_s->conf->config_methods);
 234         os_memcpy(bss->device_type, wpa_s->conf->device_type,
 235                   WPS_DEV_TYPE_LEN);
 236         if (wpa_s->conf->device_name) {
 237                 bss->device_name = os_strdup(wpa_s->conf->device_name);
 238                 bss->friendly_name = os_strdup(wpa_s->conf->device_name);
 239         }
 240         if (wpa_s->conf->manufacturer)
 241                 bss->manufacturer = os_strdup(wpa_s->conf->manufacturer);
 242         if (wpa_s->conf->model_name)
 243                 bss->model_name = os_strdup(wpa_s->conf->model_name);
 244         if (wpa_s->conf->model_number)
 245                 bss->model_number = os_strdup(wpa_s->conf->model_number);
 246         if (wpa_s->conf->serial_number)
 247                 bss->serial_number = os_strdup(wpa_s->conf->serial_number);
 248         if (is_nil_uuid(wpa_s->conf->uuid))
 249                 os_memcpy(bss->uuid, wpa_s->wps->uuid, WPS_UUID_LEN);
 250         else
 251                 os_memcpy(bss->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
 252         os_memcpy(bss->os_version, wpa_s->conf->os_version, 4);
 253 #endif /* CONFIG_WPS */
 254
 255         if (wpa_s->max_stations &&
 256             wpa_s->max_stations < wpa_s->conf->max_num_sta)
 257                 bss->max_num_sta = wpa_s->max_stations;
 258         else
 259                 bss->max_num_sta = wpa_s->conf->max_num_sta;
 260
 261         bss->disassoc_low_ack = wpa_s->conf->disassoc_low_ack;
 262
 263         return 0;
 264 }
 265
 266
 267 static void ap_public_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 268 {
 269 #ifdef CONFIG_P2P
 270         struct wpa_supplicant *wpa_s = ctx;
 271         const struct ieee80211_mgmt *mgmt;
 272         size_t hdr_len;
 273
 274         mgmt = (const struct ieee80211_mgmt *) buf;
 275         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 276         if (hdr_len > len)
 277                 return;
 278         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 279                            mgmt->u.action.category,
 280                            &mgmt->u.action.u.vs_public_action.action,
 281                            len - hdr_len, freq);
 282 #endif /* CONFIG_P2P */
 283 }
 284
 285
 286 static void ap_wps_event_cb(void *ctx, enum wps_event event,
 287                             union wps_event_data *data)
 288 {
 289 #ifdef CONFIG_P2P
 290         struct wpa_supplicant *wpa_s = ctx;
 291
 292         if (event == WPS_EV_FAIL) {
 293                 struct wps_event_fail *fail = &data->fail;
 294
 295                 if (wpa_s->parent && wpa_s->parent != wpa_s &&
 296                     wpa_s == wpa_s->global->p2p_group_formation) {
 297                         /*
 298                          * src/ap/wps_hostapd.c has already sent this on the
 299                          * main interface, so only send on the parent interface
 300                          * here if needed.
 301                          */
 302                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 303                                 "msg=%d config_error=%d",
 304                                 fail->msg, fail->config_error);
 305                 }
 306                 wpas_p2p_wps_failed(wpa_s, fail);
 307         }
 308 #endif /* CONFIG_P2P */
 309 }
 310
 311
 312 static void ap_sta_authorized_cb(void *ctx, const u8 *mac_addr,
 313                                  int authorized)
 314 {
 315         wpas_notify_sta_authorized(ctx, mac_addr, authorized);
 316 }
 317
 318
 319 static int ap_vendor_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 320 {
 321 #ifdef CONFIG_P2P
 322         struct wpa_supplicant *wpa_s = ctx;
 323         const struct ieee80211_mgmt *mgmt;
 324         size_t hdr_len;
 325
 326         mgmt = (const struct ieee80211_mgmt *) buf;
 327         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 328         if (hdr_len > len)
 329                 return -1;
 330         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 331                            mgmt->u.action.category,
 332                            &mgmt->u.action.u.vs_public_action.action,
 333                            len - hdr_len, freq);
 334 #endif /* CONFIG_P2P */
 335         return 0;
 336 }
 337
 338
 339 static int ap_probe_req_rx(void *ctx, const u8 *sa, const u8 *da,
 340                            const u8 *bssid, const u8 *ie, size_t ie_len)
 341 {
 342 #ifdef CONFIG_P2P
 343         struct wpa_supplicant *wpa_s = ctx;
 344         return wpas_p2p_probe_req_rx(wpa_s, sa, da, bssid, ie, ie_len);
 345 #else /* CONFIG_P2P */
 346         return 0;
 347 #endif /* CONFIG_P2P */
 348 }
 349
 350
 351 static void ap_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 352                                   const u8 *uuid_e)
 353 {
 354 #ifdef CONFIG_P2P
 355         struct wpa_supplicant *wpa_s = ctx;
 356         wpas_p2p_wps_success(wpa_s, mac_addr, 1);
 357 #endif /* CONFIG_P2P */
 358 }
 359
 360
 361 static void wpas_ap_configured_cb(void *ctx)
 362 {
 363         struct wpa_supplicant *wpa_s = ctx;
 364
 365         wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 366
 367         if (wpa_s->ap_configured_cb)
 368                 wpa_s->ap_configured_cb(wpa_s->ap_configured_cb_ctx,
 369                                         wpa_s->ap_configured_cb_data);
 370 }
 371
 372
 373 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
 374                              struct wpa_ssid *ssid)
 375 {
 376         struct wpa_driver_associate_params params;
 377         struct hostapd_iface *hapd_iface;
 378         struct hostapd_config *conf;
 379         size_t i;
 380
 381         if (ssid->ssid == NULL || ssid->ssid_len == 0) {
 382                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 383                 return -1;
 384         }
 385
 386         wpa_supplicant_ap_deinit(wpa_s);
 387
 388         wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
 389                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 390
 391         os_memset(&params, 0, sizeof(params));
 392         params.ssid = ssid->ssid;
 393         params.ssid_len = ssid->ssid_len;
 394         switch (ssid->mode) {
 395         case WPAS_MODE_INFRA:
 396                 params.mode = IEEE80211_MODE_INFRA;
 397                 break;
 398         case WPAS_MODE_IBSS:
 399                 params.mode = IEEE80211_MODE_IBSS;
 400                 break;
 401         case WPAS_MODE_AP:
 402         case WPAS_MODE_P2P_GO:
 403         case WPAS_MODE_P2P_GROUP_FORMATION:
 404                 params.mode = IEEE80211_MODE_AP;
 405                 break;
 406         }
 407         params.freq = ssid->frequency;
 408
 409         params.wpa_proto = ssid->proto;
 410         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK)
 411                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
 412         else
 413                 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
 414         params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
 415
 416         if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
 417                 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
 418         else if (ssid->pairwise_cipher & WPA_CIPHER_TKIP)
 419                 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
 420         else if (ssid->pairwise_cipher & WPA_CIPHER_NONE)
 421                 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 422         else {
 423                 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
 424                            "cipher.");
 425                 return -1;
 426         }
 427         params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
 428         params.group_suite = params.pairwise_suite;
 429
 430 #ifdef CONFIG_P2P
 431         if (ssid->mode == WPAS_MODE_P2P_GO ||
 432             ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 433                 params.p2p = 1;
 434 #endif /* CONFIG_P2P */
 435
 436         if (wpa_s->parent->set_ap_uapsd)
 437                 params.uapsd = wpa_s->parent->ap_uapsd;
 438         else
 439                 params.uapsd = -1;
 440
 441         if (wpa_drv_associate(wpa_s, &params) < 0) {
 442                 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
 443                 return -1;
 444         }
 445
 446         wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
 447         if (hapd_iface == NULL)
 448                 return -1;
 449         hapd_iface->owner = wpa_s;
 450         hapd_iface->drv_flags = wpa_s->drv_flags;
 451
 452         wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
 453         if (conf == NULL) {
 454                 wpa_supplicant_ap_deinit(wpa_s);
 455                 return -1;
 456         }
 457
 458         if (params.uapsd > 0) {
 459                 conf->bss->wmm_enabled = 1;
 460                 conf->bss->wmm_uapsd = 1;
 461         }
 462
 463         if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
 464                 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
 465                 wpa_supplicant_ap_deinit(wpa_s);
 466                 return -1;
 467         }
 468
 469 #ifdef CONFIG_P2P
 470         if (ssid->mode == WPAS_MODE_P2P_GO)
 471                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 472         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 473                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 474                         P2P_GROUP_FORMATION;
 475 #endif /* CONFIG_P2P */
 476
 477         hapd_iface->num_bss = conf->num_bss;
 478         hapd_iface->bss = os_zalloc(conf->num_bss *
 479                                     sizeof(struct hostapd_data *));
 480         if (hapd_iface->bss == NULL) {
 481                 wpa_supplicant_ap_deinit(wpa_s);
 482                 return -1;
 483         }
 484
 485         for (i = 0; i < conf->num_bss; i++) {
 486                 hapd_iface->bss[i] =
 487                         hostapd_alloc_bss_data(hapd_iface, conf,
 488                                                &conf->bss[i]);
 489                 if (hapd_iface->bss[i] == NULL) {
 490                         wpa_supplicant_ap_deinit(wpa_s);
 491                         return -1;
 492                 }
 493
 494                 hapd_iface->bss[i]->msg_ctx = wpa_s;
 495                 hapd_iface->bss[i]->public_action_cb = ap_public_action_rx;
 496                 hapd_iface->bss[i]->public_action_cb_ctx = wpa_s;
 497                 hapd_iface->bss[i]->vendor_action_cb = ap_vendor_action_rx;
 498                 hapd_iface->bss[i]->vendor_action_cb_ctx = wpa_s;
 499                 hostapd_register_probereq_cb(hapd_iface->bss[i],
 500                                              ap_probe_req_rx, wpa_s);
 501                 hapd_iface->bss[i]->wps_reg_success_cb = ap_wps_reg_success_cb;
 502                 hapd_iface->bss[i]->wps_reg_success_cb_ctx = wpa_s;
 503                 hapd_iface->bss[i]->wps_event_cb = ap_wps_event_cb;
 504                 hapd_iface->bss[i]->wps_event_cb_ctx = wpa_s;
 505                 hapd_iface->bss[i]->sta_authorized_cb = ap_sta_authorized_cb;
 506                 hapd_iface->bss[i]->sta_authorized_cb_ctx = wpa_s;
 507 #ifdef CONFIG_P2P
 508                 hapd_iface->bss[i]->p2p = wpa_s->global->p2p;
 509                 hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(
 510                         wpa_s, ssid->p2p_persistent_group,
 511                         ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION);
 512 #endif /* CONFIG_P2P */
 513                 hapd_iface->bss[i]->setup_complete_cb = wpas_ap_configured_cb;
 514                 hapd_iface->bss[i]->setup_complete_cb_ctx = wpa_s;
 515         }
 516
 517         os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
 518         hapd_iface->bss[0]->driver = wpa_s->driver;
 519         hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
 520
 521         wpa_s->current_ssid = ssid;
 522         os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
 523         wpa_s->assoc_freq = ssid->frequency;
 524
 525         if (hostapd_setup_interface(wpa_s->ap_iface)) {
 526                 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
 527                 wpa_supplicant_ap_deinit(wpa_s);
 528                 return -1;
 529         }
 530
 531         return 0;
 532 }
 533
 534
 535 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
 536 {
 537 #ifdef CONFIG_WPS
 538         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 539 #endif /* CONFIG_WPS */
 540
 541         if (wpa_s->ap_iface == NULL)
 542                 return;
 543
 544         wpa_s->current_ssid = NULL;
 545         wpa_s->assoc_freq = 0;
 546         wpa_s->reassociated_connection = 0;
 547 #ifdef CONFIG_P2P
 548         if (wpa_s->ap_iface->bss)
 549                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
 550         wpas_p2p_group_deinit(wpa_s);
 551 #endif /* CONFIG_P2P */
 552         hostapd_interface_deinit(wpa_s->ap_iface);
 553         hostapd_interface_free(wpa_s->ap_iface);
 554         wpa_s->ap_iface = NULL;
 555         wpa_drv_deinit_ap(wpa_s);
 556 }
 557
 558
 559 void ap_tx_status(void *ctx, const u8 *addr,
 560                   const u8 *buf, size_t len, int ack)
 561 {
 562 #ifdef NEED_AP_MLME
 563         struct wpa_supplicant *wpa_s = ctx;
 564         hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
 565 #endif /* NEED_AP_MLME */
 566 }
 567
 568
 569 void ap_client_poll_ok(void *ctx, const u8 *addr)
 570 {
 571 #ifdef NEED_AP_MLME
 572         struct wpa_supplicant *wpa_s = ctx;
 573         if (wpa_s->ap_iface)
 574                 hostapd_client_poll_ok(wpa_s->ap_iface->bss[0], addr);
 575 #endif /* NEED_AP_MLME */
 576 }
 577
 578
 579 void ap_rx_from_unknown_sta(void *ctx, const u8 *addr, int wds)
 580 {
 581 #ifdef NEED_AP_MLME
 582         struct wpa_supplicant *wpa_s = ctx;
 583         ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], addr, wds);
 584 #endif /* NEED_AP_MLME */
 585 }
 586
 587
 588 void ap_mgmt_rx(void *ctx, struct rx_mgmt *rx_mgmt)
 589 {
 590 #ifdef NEED_AP_MLME
 591         struct wpa_supplicant *wpa_s = ctx;
 592         struct hostapd_frame_info fi;
 593         os_memset(&fi, 0, sizeof(fi));
 594         fi.datarate = rx_mgmt->datarate;
 595         fi.ssi_signal = rx_mgmt->ssi_signal;
 596         ieee802_11_mgmt(wpa_s->ap_iface->bss[0], rx_mgmt->frame,
 597                         rx_mgmt->frame_len, &fi);
 598 #endif /* NEED_AP_MLME */
 599 }
 600
 601
 602 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
 603 {
 604 #ifdef NEED_AP_MLME
 605         struct wpa_supplicant *wpa_s = ctx;
 606         ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
 607 #endif /* NEED_AP_MLME */
 608 }
 609
 610
 611 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
 612                                 const u8 *src_addr, const u8 *buf, size_t len)
 613 {
 614         ieee802_1x_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
 615 }
 616
 617
 618 #ifdef CONFIG_WPS
 619
 620 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 621                               const u8 *p2p_dev_addr)
 622 {
 623         if (!wpa_s->ap_iface)
 624                 return -1;
 625         return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0],
 626                                          p2p_dev_addr);
 627 }
 628
 629
 630 static int wpa_supplicant_ap_wps_sta_cancel(struct hostapd_data *hapd,
 631                                             struct sta_info *sta, void *ctx)
 632 {
 633         if (sta && (sta->flags & WLAN_STA_WPS)) {
 634                 ap_sta_deauthenticate(hapd, sta,
 635                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 636                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 637                            __func__, MAC2STR(sta->addr));
 638                 return 1;
 639         }
 640
 641         return 0;
 642 }
 643
 644
 645 int wpa_supplicant_ap_wps_cancel(struct wpa_supplicant *wpa_s)
 646 {
 647         struct wps_registrar *reg;
 648         int reg_sel = 0, wps_sta = 0;
 649
 650         if (!wpa_s->ap_iface || !wpa_s->ap_iface->bss[0]->wps)
 651                 return -1;
 652
 653         reg = wpa_s->ap_iface->bss[0]->wps->registrar;
 654         reg_sel = wps_registrar_wps_cancel(reg);
 655         wps_sta = ap_for_each_sta(wpa_s->ap_iface->bss[0],
 656                                   wpa_supplicant_ap_wps_sta_cancel, NULL);
 657
 658         if (!reg_sel && !wps_sta) {
 659                 wpa_printf(MSG_DEBUG, "No WPS operation in progress at this "
 660                            "time");
 661                 return -1;
 662         }
 663
 664         /*
 665          * There are 2 cases to return wps cancel as success:
 666          * 1. When wps cancel was initiated but no connection has been
 667          *    established with client yet.
 668          * 2. Client is in the middle of exchanging WPS messages.
 669          */
 670
 671         return 0;
 672 }
 673
 674
 675 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 676                               const char *pin, char *buf, size_t buflen)
 677 {
 678         int ret, ret_len = 0;
 679
 680         if (!wpa_s->ap_iface)
 681                 return -1;
 682
 683         if (pin == NULL) {
 684                 unsigned int rpin = wps_generate_pin();
 685                 ret_len = os_snprintf(buf, buflen, "%d", rpin);
 686                 pin = buf;
 687         } else
 688                 ret_len = os_snprintf(buf, buflen, "%s", pin);
 689
 690         ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], bssid, "any", pin,
 691                                   0);
 692         if (ret)
 693                 return -1;
 694         return ret_len;
 695 }
 696
 697
 698 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
 699 {
 700         struct wpa_supplicant *wpa_s = eloop_data;
 701         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
 702         wpas_wps_ap_pin_disable(wpa_s);
 703 }
 704
 705
 706 static void wpas_wps_ap_pin_enable(struct wpa_supplicant *wpa_s, int timeout)
 707 {
 708         struct hostapd_data *hapd;
 709
 710         if (wpa_s->ap_iface == NULL)
 711                 return;
 712         hapd = wpa_s->ap_iface->bss[0];
 713         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
 714         hapd->ap_pin_failures = 0;
 715         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 716         if (timeout > 0)
 717                 eloop_register_timeout(timeout, 0,
 718                                        wpas_wps_ap_pin_timeout, wpa_s, NULL);
 719 }
 720
 721
 722 void wpas_wps_ap_pin_disable(struct wpa_supplicant *wpa_s)
 723 {
 724         struct hostapd_data *hapd;
 725
 726         if (wpa_s->ap_iface == NULL)
 727                 return;
 728         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
 729         hapd = wpa_s->ap_iface->bss[0];
 730         os_free(hapd->conf->ap_pin);
 731         hapd->conf->ap_pin = NULL;
 732         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 733 }
 734
 735
 736 const char * wpas_wps_ap_pin_random(struct wpa_supplicant *wpa_s, int timeout)
 737 {
 738         struct hostapd_data *hapd;
 739         unsigned int pin;
 740         char pin_txt[9];
 741
 742         if (wpa_s->ap_iface == NULL)
 743                 return NULL;
 744         hapd = wpa_s->ap_iface->bss[0];
 745         pin = wps_generate_pin();
 746         os_snprintf(pin_txt, sizeof(pin_txt), "%u", pin);
 747         os_free(hapd->conf->ap_pin);
 748         hapd->conf->ap_pin = os_strdup(pin_txt);
 749         if (hapd->conf->ap_pin == NULL)
 750                 return NULL;
 751         wpas_wps_ap_pin_enable(wpa_s, timeout);
 752
 753         return hapd->conf->ap_pin;
 754 }
 755
 756
 757 const char * wpas_wps_ap_pin_get(struct wpa_supplicant *wpa_s)
 758 {
 759         struct hostapd_data *hapd;
 760         if (wpa_s->ap_iface == NULL)
 761                 return NULL;
 762         hapd = wpa_s->ap_iface->bss[0];
 763         return hapd->conf->ap_pin;
 764 }
 765
 766
 767 int wpas_wps_ap_pin_set(struct wpa_supplicant *wpa_s, const char *pin,
 768                         int timeout)
 769 {
 770         struct hostapd_data *hapd;
 771         char pin_txt[9];
 772         int ret;
 773
 774         if (wpa_s->ap_iface == NULL)
 775                 return -1;
 776         hapd = wpa_s->ap_iface->bss[0];
 777         ret = os_snprintf(pin_txt, sizeof(pin_txt), "%s", pin);
 778         if (ret < 0 || ret >= (int) sizeof(pin_txt))
 779                 return -1;
 780         os_free(hapd->conf->ap_pin);
 781         hapd->conf->ap_pin = os_strdup(pin_txt);
 782         if (hapd->conf->ap_pin == NULL)
 783                 return -1;
 784         wpas_wps_ap_pin_enable(wpa_s, timeout);
 785
 786         return 0;
 787 }
 788
 789
 790 void wpa_supplicant_ap_pwd_auth_fail(struct wpa_supplicant *wpa_s)
 791 {
 792         struct hostapd_data *hapd;
 793
 794         if (wpa_s->ap_iface == NULL)
 795                 return;
 796         hapd = wpa_s->ap_iface->bss[0];
 797
 798         /*
 799          * Registrar failed to prove its knowledge of the AP PIN. Disable AP
 800          * PIN if this happens multiple times to slow down brute force attacks.
 801          */
 802         hapd->ap_pin_failures++;
 803         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u",
 804                    hapd->ap_pin_failures);
 805         if (hapd->ap_pin_failures < 3)
 806                 return;
 807
 808         wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN");
 809         hapd->ap_pin_failures = 0;
 810         os_free(hapd->conf->ap_pin);
 811         hapd->conf->ap_pin = NULL;
 812 }
 813
 814 #endif /* CONFIG_WPS */
 815
 816
 817 #ifdef CONFIG_CTRL_IFACE
 818
 819 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
 820                             char *buf, size_t buflen)
 821 {
 822         if (wpa_s->ap_iface == NULL)
 823                 return -1;
 824         return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
 825                                             buf, buflen);
 826 }
 827
 828
 829 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
 830                       char *buf, size_t buflen)
 831 {
 832         if (wpa_s->ap_iface == NULL)
 833                 return -1;
 834         return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
 835                                       buf, buflen);
 836 }
 837
 838
 839 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
 840                            char *buf, size_t buflen)
 841 {
 842         if (wpa_s->ap_iface == NULL)
 843                 return -1;
 844         return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
 845                                            buf, buflen);
 846 }
 847
 848
 849 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
 850                                  size_t buflen, int verbose)
 851 {
 852         char *pos = buf, *end = buf + buflen;
 853         int ret;
 854         struct hostapd_bss_config *conf;
 855
 856         if (wpa_s->ap_iface == NULL)
 857                 return -1;
 858
 859         conf = wpa_s->ap_iface->bss[0]->conf;
 860         if (conf->wpa == 0)
 861                 return 0;
 862
 863         ret = os_snprintf(pos, end - pos,
 864                           "pairwise_cipher=%s\n"
 865                           "group_cipher=%s\n"
 866                           "key_mgmt=%s\n",
 867                           wpa_cipher_txt(conf->rsn_pairwise),
 868                           wpa_cipher_txt(conf->wpa_group),
 869                           wpa_key_mgmt_txt(conf->wpa_key_mgmt,
 870                                            conf->wpa));
 871         if (ret < 0 || ret >= end - pos)
 872                 return pos - buf;
 873         pos += ret;
 874         return pos - buf;
 875 }
 876
 877 #endif /* CONFIG_CTRL_IFACE */
 878
 879
 880 int wpa_supplicant_ap_update_beacon(struct wpa_supplicant *wpa_s)
 881 {
 882         struct hostapd_iface *iface = wpa_s->ap_iface;
 883         struct wpa_ssid *ssid = wpa_s->current_ssid;
 884         struct hostapd_data *hapd;
 885
 886         if (ssid == NULL || wpa_s->ap_iface == NULL)
 887                 return -1;
 888
 889 #ifdef CONFIG_P2P
 890         if (ssid->mode == WPAS_MODE_P2P_GO)
 891                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 892         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 893                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 894                         P2P_GROUP_FORMATION;
 895 #endif /* CONFIG_P2P */
 896
 897         ieee802_11_set_beacons(iface);
 898         hapd = iface->bss[0];
 899         hostapd_set_ap_wps_ie(hapd);
 900
 901         return 0;
 902 }
 903
 904
 905 int wpa_supplicant_ap_mac_addr_filter(struct wpa_supplicant *wpa_s,
 906                                       const u8 *addr)
 907 {
 908         struct hostapd_data *hapd;
 909         struct hostapd_bss_config *conf;
 910
 911         if (!wpa_s->ap_iface)
 912                 return -1;
 913
 914         if (addr)
 915                 wpa_printf(MSG_DEBUG, "AP: Set MAC address filter: " MACSTR,
 916                            MAC2STR(addr));
 917         else
 918                 wpa_printf(MSG_DEBUG, "AP: Clear MAC address filter");
 919
 920         hapd = wpa_s->ap_iface->bss[0];
 921         conf = hapd->conf;
 922
 923         os_free(conf->accept_mac);
 924         conf->accept_mac = NULL;
 925         conf->num_accept_mac = 0;
 926         os_free(conf->deny_mac);
 927         conf->deny_mac = NULL;
 928         conf->num_deny_mac = 0;
 929
 930         if (addr == NULL) {
 931                 conf->macaddr_acl = ACCEPT_UNLESS_DENIED;
 932                 return 0;
 933         }
 934
 935         conf->macaddr_acl = DENY_UNLESS_ACCEPTED;
 936         conf->accept_mac = os_zalloc(sizeof(struct mac_acl_entry));
 937         if (conf->accept_mac == NULL)
 938                 return -1;
 939         os_memcpy(conf->accept_mac[0].addr, addr, ETH_ALEN);
 940         conf->num_accept_mac = 1;
 941
 942         return 0;
 943 }