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
  60         conf->driver = wpa_s->driver;
  61
  62         os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
  63
  64         if (ssid->frequency == 0) {
  65                 /* default channel 11 */
  66                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
  67                 conf->channel = 11;
  68         } else if (ssid->frequency >= 2412 && ssid->frequency <= 2472) {
  69                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
  70                 conf->channel = (ssid->frequency - 2407) / 5;
  71         } else if ((ssid->frequency >= 5180 && ssid->frequency <= 5240) ||
  72                    (ssid->frequency >= 5745 && ssid->frequency <= 5825)) {
  73                 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
  74                 conf->channel = (ssid->frequency - 5000) / 5;
  75         } else {
  76                 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
  77                            ssid->frequency);
  78                 return -1;
  79         }
  80
  81         /* TODO: enable HT if driver supports it;
  82          * drop to 11b if driver does not support 11g */
  83
  84 #ifdef CONFIG_P2P
  85         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
  86                 /* Remove 802.11b rates from supported and basic rate sets */
  87                 int *list = os_malloc(4 * sizeof(int));
  88                 if (list) {
  89                         list[0] = 60;
  90                         list[1] = 120;
  91                         list[2] = 240;
  92                         list[3] = -1;
  93                 }
  94                 conf->basic_rates = list;
  95
  96                 list = os_malloc(9 * sizeof(int));
  97                 if (list) {
  98                         list[0] = 60;
  99                         list[1] = 90;
 100                         list[2] = 120;
 101                         list[3] = 180;
 102                         list[4] = 240;
 103                         list[5] = 360;
 104                         list[6] = 480;
 105                         list[7] = 540;
 106                         list[8] = -1;
 107                 }
 108                 conf->supported_rates = list;
 109         }
 110 #endif /* CONFIG_P2P */
 111
 112         if (ssid->ssid_len == 0) {
 113                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 114                 return -1;
 115         }
 116         os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
 117         bss->ssid.ssid[ssid->ssid_len] = '\0';
 118         bss->ssid.ssid_len = ssid->ssid_len;
 119         bss->ssid.ssid_set = 1;
 120
 121         if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
 122                 bss->wpa = ssid->proto;
 123         bss->wpa_key_mgmt = ssid->key_mgmt;
 124         bss->wpa_pairwise = ssid->pairwise_cipher;
 125         if (ssid->passphrase) {
 126                 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
 127         } else if (ssid->psk_set) {
 128                 os_free(bss->ssid.wpa_psk);
 129                 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
 130                 if (bss->ssid.wpa_psk == NULL)
 131                         return -1;
 132                 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
 133                 bss->ssid.wpa_psk->group = 1;
 134         }
 135
 136         /* Select group cipher based on the enabled pairwise cipher suites */
 137         pairwise = 0;
 138         if (bss->wpa & 1)
 139                 pairwise |= bss->wpa_pairwise;
 140         if (bss->wpa & 2) {
 141                 if (bss->rsn_pairwise == 0)
 142                         bss->rsn_pairwise = bss->wpa_pairwise;
 143                 pairwise |= bss->rsn_pairwise;
 144         }
 145         if (pairwise & WPA_CIPHER_TKIP)
 146                 bss->wpa_group = WPA_CIPHER_TKIP;
 147         else
 148                 bss->wpa_group = WPA_CIPHER_CCMP;
 149
 150         if (bss->wpa && bss->ieee802_1x)
 151                 bss->ssid.security_policy = SECURITY_WPA;
 152         else if (bss->wpa)
 153                 bss->ssid.security_policy = SECURITY_WPA_PSK;
 154         else if (bss->ieee802_1x) {
 155                 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
 156                 bss->ssid.wep.default_len = bss->default_wep_key_len;
 157         } else if (bss->ssid.wep.keys_set)
 158                 bss->ssid.security_policy = SECURITY_STATIC_WEP;
 159         else
 160                 bss->ssid.security_policy = SECURITY_PLAINTEXT;
 161
 162 #ifdef CONFIG_WPS
 163         /*
 164          * Enable WPS by default, but require user interaction to actually use
 165          * it. Only the internal Registrar is supported.
 166          */
 167         bss->eap_server = 1;
 168         bss->wps_state = 2;
 169         bss->ap_setup_locked = 2;
 170         if (wpa_s->conf->config_methods)
 171                 bss->config_methods = os_strdup(wpa_s->conf->config_methods);
 172         os_memcpy(bss->device_type, wpa_s->conf->device_type,
 173                   WPS_DEV_TYPE_LEN);
 174         if (wpa_s->conf->device_name) {
 175                 bss->device_name = os_strdup(wpa_s->conf->device_name);
 176                 bss->friendly_name = os_strdup(wpa_s->conf->device_name);
 177         }
 178         if (wpa_s->conf->manufacturer)
 179                 bss->manufacturer = os_strdup(wpa_s->conf->manufacturer);
 180         if (wpa_s->conf->model_name)
 181                 bss->model_name = os_strdup(wpa_s->conf->model_name);
 182         if (wpa_s->conf->model_number)
 183                 bss->model_number = os_strdup(wpa_s->conf->model_number);
 184         if (wpa_s->conf->serial_number)
 185                 bss->serial_number = os_strdup(wpa_s->conf->serial_number);
 186         if (is_nil_uuid(wpa_s->conf->uuid))
 187                 os_memcpy(bss->uuid, wpa_s->wps->uuid, WPS_UUID_LEN);
 188         else
 189                 os_memcpy(bss->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
 190         os_memcpy(bss->os_version, wpa_s->conf->os_version, 4);
 191 #endif /* CONFIG_WPS */
 192
 193         if (wpa_s->max_stations &&
 194             wpa_s->max_stations < wpa_s->conf->max_num_sta)
 195                 bss->max_num_sta = wpa_s->max_stations;
 196         else
 197                 bss->max_num_sta = wpa_s->conf->max_num_sta;
 198
 199         bss->disassoc_low_ack = wpa_s->conf->disassoc_low_ack;
 200
 201         return 0;
 202 }
 203
 204
 205 static void ap_public_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 206 {
 207 #ifdef CONFIG_P2P
 208         struct wpa_supplicant *wpa_s = ctx;
 209         const struct ieee80211_mgmt *mgmt;
 210         size_t hdr_len;
 211
 212         mgmt = (const struct ieee80211_mgmt *) buf;
 213         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 214         if (hdr_len > len)
 215                 return;
 216         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 217                            mgmt->u.action.category,
 218                            &mgmt->u.action.u.vs_public_action.action,
 219                            len - hdr_len, freq);
 220 #endif /* CONFIG_P2P */
 221 }
 222
 223
 224 static void ap_wps_event_cb(void *ctx, enum wps_event event,
 225                             union wps_event_data *data)
 226 {
 227 #ifdef CONFIG_P2P
 228         struct wpa_supplicant *wpa_s = ctx;
 229
 230         if (event == WPS_EV_FAIL && wpa_s->parent && wpa_s->parent != wpa_s &&
 231             wpa_s == wpa_s->global->p2p_group_formation) {
 232                 struct wps_event_fail *fail = &data->fail;
 233
 234                 /*
 235                  * src/ap/wps_hostapd.c has already sent this on the main
 236                  * interface, so only send on the parent interface here if
 237                  * needed.
 238                  */
 239                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 240                         "msg=%d config_error=%d",
 241                         fail->msg, fail->config_error);
 242         }
 243 #endif /* CONFIG_P2P */
 244 }
 245
 246
 247 static void ap_sta_authorized_cb(void *ctx, const u8 *mac_addr,
 248                                  int authorized)
 249 {
 250         wpas_notify_sta_authorized(ctx, mac_addr, authorized);
 251 }
 252
 253
 254 static int ap_vendor_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 255 {
 256 #ifdef CONFIG_P2P
 257         struct wpa_supplicant *wpa_s = ctx;
 258         const struct ieee80211_mgmt *mgmt;
 259         size_t hdr_len;
 260
 261         mgmt = (const struct ieee80211_mgmt *) buf;
 262         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 263         if (hdr_len > len)
 264                 return -1;
 265         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 266                            mgmt->u.action.category,
 267                            &mgmt->u.action.u.vs_public_action.action,
 268                            len - hdr_len, freq);
 269 #endif /* CONFIG_P2P */
 270         return 0;
 271 }
 272
 273
 274 static int ap_probe_req_rx(void *ctx, const u8 *addr, const u8 *ie,
 275                            size_t ie_len)
 276 {
 277 #ifdef CONFIG_P2P
 278         struct wpa_supplicant *wpa_s = ctx;
 279         return wpas_p2p_probe_req_rx(wpa_s, addr, ie, ie_len);
 280 #else /* CONFIG_P2P */
 281         return 0;
 282 #endif /* CONFIG_P2P */
 283 }
 284
 285
 286 static void ap_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 287                                   const u8 *uuid_e)
 288 {
 289 #ifdef CONFIG_P2P
 290         struct wpa_supplicant *wpa_s = ctx;
 291         wpas_p2p_wps_success(wpa_s, mac_addr, 1);
 292 #endif /* CONFIG_P2P */
 293 }
 294
 295
 296 static void wpas_ap_configured_cb(void *ctx)
 297 {
 298         struct wpa_supplicant *wpa_s = ctx;
 299
 300         wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 301
 302         if (wpa_s->ap_configured_cb)
 303                 wpa_s->ap_configured_cb(wpa_s->ap_configured_cb_ctx,
 304                                         wpa_s->ap_configured_cb_data);
 305 }
 306
 307
 308 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
 309                              struct wpa_ssid *ssid)
 310 {
 311         struct wpa_driver_associate_params params;
 312         struct hostapd_iface *hapd_iface;
 313         struct hostapd_config *conf;
 314         size_t i;
 315
 316         if (ssid->ssid == NULL || ssid->ssid_len == 0) {
 317                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 318                 return -1;
 319         }
 320
 321         wpa_supplicant_ap_deinit(wpa_s);
 322
 323         wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
 324                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 325
 326         os_memset(&params, 0, sizeof(params));
 327         params.ssid = ssid->ssid;
 328         params.ssid_len = ssid->ssid_len;
 329         switch (ssid->mode) {
 330         case WPAS_MODE_INFRA:
 331                 params.mode = IEEE80211_MODE_INFRA;
 332                 break;
 333         case WPAS_MODE_IBSS:
 334                 params.mode = IEEE80211_MODE_IBSS;
 335                 break;
 336         case WPAS_MODE_AP:
 337         case WPAS_MODE_P2P_GO:
 338         case WPAS_MODE_P2P_GROUP_FORMATION:
 339                 params.mode = IEEE80211_MODE_AP;
 340                 break;
 341         }
 342         params.freq = ssid->frequency;
 343
 344         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK)
 345                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
 346         else
 347                 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
 348         params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
 349
 350         if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
 351                 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
 352         else if (ssid->pairwise_cipher & WPA_CIPHER_TKIP)
 353                 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
 354         else if (ssid->pairwise_cipher & WPA_CIPHER_NONE)
 355                 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 356         else {
 357                 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
 358                            "cipher.");
 359                 return -1;
 360         }
 361         params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
 362         params.group_suite = params.pairwise_suite;
 363
 364 #ifdef CONFIG_P2P
 365         if (ssid->mode == WPAS_MODE_P2P_GO ||
 366             ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 367                 params.p2p = 1;
 368         wpa_drv_set_intra_bss(wpa_s, wpa_s->conf->p2p_intra_bss);
 369 #endif /* CONFIG_P2P */
 370
 371         if (wpa_s->parent->set_ap_uapsd)
 372                 params.uapsd = wpa_s->parent->ap_uapsd;
 373         else
 374                 params.uapsd = -1;
 375
 376         if (wpa_drv_associate(wpa_s, &params) < 0) {
 377                 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
 378                 return -1;
 379         }
 380
 381         wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
 382         if (hapd_iface == NULL)
 383                 return -1;
 384         hapd_iface->owner = wpa_s;
 385
 386         wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
 387         if (conf == NULL) {
 388                 wpa_supplicant_ap_deinit(wpa_s);
 389                 return -1;
 390         }
 391
 392         if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
 393                 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
 394                 wpa_supplicant_ap_deinit(wpa_s);
 395                 return -1;
 396         }
 397
 398 #ifdef CONFIG_P2P
 399         if (ssid->mode == WPAS_MODE_P2P_GO)
 400                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 401         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 402                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 403                         P2P_GROUP_FORMATION;
 404 #endif /* CONFIG_P2P */
 405
 406         hapd_iface->num_bss = conf->num_bss;
 407         hapd_iface->bss = os_zalloc(conf->num_bss *
 408                                     sizeof(struct hostapd_data *));
 409         if (hapd_iface->bss == NULL) {
 410                 wpa_supplicant_ap_deinit(wpa_s);
 411                 return -1;
 412         }
 413
 414         for (i = 0; i < conf->num_bss; i++) {
 415                 hapd_iface->bss[i] =
 416                         hostapd_alloc_bss_data(hapd_iface, conf,
 417                                                &conf->bss[i]);
 418                 if (hapd_iface->bss[i] == NULL) {
 419                         wpa_supplicant_ap_deinit(wpa_s);
 420                         return -1;
 421                 }
 422
 423                 hapd_iface->bss[i]->msg_ctx = wpa_s;
 424                 hapd_iface->bss[i]->public_action_cb = ap_public_action_rx;
 425                 hapd_iface->bss[i]->public_action_cb_ctx = wpa_s;
 426                 hapd_iface->bss[i]->vendor_action_cb = ap_vendor_action_rx;
 427                 hapd_iface->bss[i]->vendor_action_cb_ctx = wpa_s;
 428                 hostapd_register_probereq_cb(hapd_iface->bss[i],
 429                                              ap_probe_req_rx, wpa_s);
 430                 hapd_iface->bss[i]->wps_reg_success_cb = ap_wps_reg_success_cb;
 431                 hapd_iface->bss[i]->wps_reg_success_cb_ctx = wpa_s;
 432                 hapd_iface->bss[i]->wps_event_cb = ap_wps_event_cb;
 433                 hapd_iface->bss[i]->wps_event_cb_ctx = wpa_s;
 434                 hapd_iface->bss[i]->sta_authorized_cb = ap_sta_authorized_cb;
 435                 hapd_iface->bss[i]->sta_authorized_cb_ctx = wpa_s;
 436 #ifdef CONFIG_P2P
 437                 hapd_iface->bss[i]->p2p = wpa_s->global->p2p;
 438                 hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(
 439                         wpa_s, ssid->p2p_persistent_group,
 440                         ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION);
 441 #endif /* CONFIG_P2P */
 442                 hapd_iface->bss[i]->setup_complete_cb = wpas_ap_configured_cb;
 443                 hapd_iface->bss[i]->setup_complete_cb_ctx = wpa_s;
 444         }
 445
 446         os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
 447         hapd_iface->bss[0]->driver = wpa_s->driver;
 448         hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
 449
 450         wpa_s->current_ssid = ssid;
 451         os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
 452         wpa_s->assoc_freq = ssid->frequency;
 453
 454         if (hostapd_setup_interface(wpa_s->ap_iface)) {
 455                 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
 456                 wpa_supplicant_ap_deinit(wpa_s);
 457                 return -1;
 458         }
 459
 460         return 0;
 461 }
 462
 463
 464 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
 465 {
 466 #ifdef CONFIG_WPS
 467         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 468 #endif /* CONFIG_WPS */
 469
 470         if (wpa_s->ap_iface == NULL)
 471                 return;
 472
 473         wpa_s->current_ssid = NULL;
 474         wpa_s->assoc_freq = 0;
 475 #ifdef CONFIG_P2P
 476         if (wpa_s->ap_iface->bss)
 477                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
 478         wpas_p2p_group_deinit(wpa_s);
 479 #endif /* CONFIG_P2P */
 480         hostapd_interface_deinit(wpa_s->ap_iface);
 481         hostapd_interface_free(wpa_s->ap_iface);
 482         wpa_s->ap_iface = NULL;
 483         wpa_drv_deinit_ap(wpa_s);
 484 }
 485
 486
 487 void ap_tx_status(void *ctx, const u8 *addr,
 488                   const u8 *buf, size_t len, int ack)
 489 {
 490 #ifdef NEED_AP_MLME
 491         struct wpa_supplicant *wpa_s = ctx;
 492         hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
 493 #endif /* NEED_AP_MLME */
 494 }
 495
 496
 497 void ap_rx_from_unknown_sta(void *ctx, const u8 *frame, size_t len)
 498 {
 499 #ifdef NEED_AP_MLME
 500         struct wpa_supplicant *wpa_s = ctx;
 501         const struct ieee80211_hdr *hdr =
 502                 (const struct ieee80211_hdr *) frame;
 503         u16 fc = le_to_host16(hdr->frame_control);
 504         ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], hdr->addr2,
 505                                    (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
 506                                    (WLAN_FC_TODS | WLAN_FC_FROMDS));
 507 #endif /* NEED_AP_MLME */
 508 }
 509
 510
 511 void ap_mgmt_rx(void *ctx, struct rx_mgmt *rx_mgmt)
 512 {
 513 #ifdef NEED_AP_MLME
 514         struct wpa_supplicant *wpa_s = ctx;
 515         struct hostapd_frame_info fi;
 516         os_memset(&fi, 0, sizeof(fi));
 517         fi.datarate = rx_mgmt->datarate;
 518         fi.ssi_signal = rx_mgmt->ssi_signal;
 519         ieee802_11_mgmt(wpa_s->ap_iface->bss[0], rx_mgmt->frame,
 520                         rx_mgmt->frame_len, &fi);
 521 #endif /* NEED_AP_MLME */
 522 }
 523
 524
 525 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
 526 {
 527 #ifdef NEED_AP_MLME
 528         struct wpa_supplicant *wpa_s = ctx;
 529         ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
 530 #endif /* NEED_AP_MLME */
 531 }
 532
 533
 534 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
 535                                 const u8 *src_addr, const u8 *buf, size_t len)
 536 {
 537         ieee802_1x_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
 538 }
 539
 540
 541 #ifdef CONFIG_WPS
 542
 543 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 544                               const u8 *p2p_dev_addr)
 545 {
 546         if (!wpa_s->ap_iface)
 547                 return -1;
 548         return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0],
 549                                          p2p_dev_addr);
 550 }
 551
 552
 553 static int wpa_supplicant_ap_wps_sta_cancel(struct hostapd_data *hapd,
 554                                             struct sta_info *sta, void *ctx)
 555 {
 556         if (sta && (sta->flags & WLAN_STA_WPS)) {
 557                 ap_sta_deauthenticate(hapd, sta,
 558                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 559                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 560                            __func__, MAC2STR(sta->addr));
 561                 return 1;
 562         }
 563
 564         return 0;
 565 }
 566
 567
 568 int wpa_supplicant_ap_wps_cancel(struct wpa_supplicant *wpa_s)
 569 {
 570         struct wps_registrar *reg;
 571         int reg_sel = 0, wps_sta = 0;
 572
 573         if (!wpa_s->ap_iface || !wpa_s->ap_iface->bss[0]->wps)
 574                 return -1;
 575
 576         reg = wpa_s->ap_iface->bss[0]->wps->registrar;
 577         reg_sel = wps_registrar_wps_cancel(reg);
 578         wps_sta = ap_for_each_sta(wpa_s->ap_iface->bss[0],
 579                                   wpa_supplicant_ap_wps_sta_cancel, NULL);
 580
 581         if (!reg_sel && !wps_sta) {
 582                 wpa_printf(MSG_DEBUG, "No WPS operation in progress at this "
 583                            "time");
 584                 return -1;
 585         }
 586
 587         /*
 588          * There are 2 cases to return wps cancel as success:
 589          * 1. When wps cancel was initiated but no connection has been
 590          *    established with client yet.
 591          * 2. Client is in the middle of exchanging WPS messages.
 592          */
 593
 594         return 0;
 595 }
 596
 597
 598 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 599                               const char *pin, char *buf, size_t buflen)
 600 {
 601         int ret, ret_len = 0;
 602
 603         if (!wpa_s->ap_iface)
 604                 return -1;
 605
 606         if (pin == NULL) {
 607                 unsigned int rpin = wps_generate_pin();
 608                 ret_len = os_snprintf(buf, buflen, "%d", rpin);
 609                 pin = buf;
 610         } else
 611                 ret_len = os_snprintf(buf, buflen, "%s", pin);
 612
 613         ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], bssid, "any", pin,
 614                                   0);
 615         if (ret)
 616                 return -1;
 617         return ret_len;
 618 }
 619
 620
 621 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
 622 {
 623         struct wpa_supplicant *wpa_s = eloop_data;
 624         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
 625         wpas_wps_ap_pin_disable(wpa_s);
 626 }
 627
 628
 629 static void wpas_wps_ap_pin_enable(struct wpa_supplicant *wpa_s, int timeout)
 630 {
 631         struct hostapd_data *hapd;
 632
 633         if (wpa_s->ap_iface == NULL)
 634                 return;
 635         hapd = wpa_s->ap_iface->bss[0];
 636         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
 637         hapd->ap_pin_failures = 0;
 638         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 639         if (timeout > 0)
 640                 eloop_register_timeout(timeout, 0,
 641                                        wpas_wps_ap_pin_timeout, wpa_s, NULL);
 642 }
 643
 644
 645 void wpas_wps_ap_pin_disable(struct wpa_supplicant *wpa_s)
 646 {
 647         struct hostapd_data *hapd;
 648
 649         if (wpa_s->ap_iface == NULL)
 650                 return;
 651         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
 652         hapd = wpa_s->ap_iface->bss[0];
 653         os_free(hapd->conf->ap_pin);
 654         hapd->conf->ap_pin = NULL;
 655         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 656 }
 657
 658
 659 const char * wpas_wps_ap_pin_random(struct wpa_supplicant *wpa_s, int timeout)
 660 {
 661         struct hostapd_data *hapd;
 662         unsigned int pin;
 663         char pin_txt[9];
 664
 665         if (wpa_s->ap_iface == NULL)
 666                 return NULL;
 667         hapd = wpa_s->ap_iface->bss[0];
 668         pin = wps_generate_pin();
 669         os_snprintf(pin_txt, sizeof(pin_txt), "%u", pin);
 670         os_free(hapd->conf->ap_pin);
 671         hapd->conf->ap_pin = os_strdup(pin_txt);
 672         if (hapd->conf->ap_pin == NULL)
 673                 return NULL;
 674         wpas_wps_ap_pin_enable(wpa_s, timeout);
 675
 676         return hapd->conf->ap_pin;
 677 }
 678
 679
 680 const char * wpas_wps_ap_pin_get(struct wpa_supplicant *wpa_s)
 681 {
 682         struct hostapd_data *hapd;
 683         if (wpa_s->ap_iface == NULL)
 684                 return NULL;
 685         hapd = wpa_s->ap_iface->bss[0];
 686         return hapd->conf->ap_pin;
 687 }
 688
 689
 690 int wpas_wps_ap_pin_set(struct wpa_supplicant *wpa_s, const char *pin,
 691                         int timeout)
 692 {
 693         struct hostapd_data *hapd;
 694         char pin_txt[9];
 695         int ret;
 696
 697         if (wpa_s->ap_iface == NULL)
 698                 return -1;
 699         hapd = wpa_s->ap_iface->bss[0];
 700         ret = os_snprintf(pin_txt, sizeof(pin_txt), "%s", pin);
 701         if (ret < 0 || ret >= (int) sizeof(pin_txt))
 702                 return -1;
 703         os_free(hapd->conf->ap_pin);
 704         hapd->conf->ap_pin = os_strdup(pin_txt);
 705         if (hapd->conf->ap_pin == NULL)
 706                 return -1;
 707         wpas_wps_ap_pin_enable(wpa_s, timeout);
 708
 709         return 0;
 710 }
 711
 712
 713 void wpa_supplicant_ap_pwd_auth_fail(struct wpa_supplicant *wpa_s)
 714 {
 715         struct hostapd_data *hapd;
 716
 717         if (wpa_s->ap_iface == NULL)
 718                 return;
 719         hapd = wpa_s->ap_iface->bss[0];
 720
 721         /*
 722          * Registrar failed to prove its knowledge of the AP PIN. Disable AP
 723          * PIN if this happens multiple times to slow down brute force attacks.
 724          */
 725         hapd->ap_pin_failures++;
 726         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u",
 727                    hapd->ap_pin_failures);
 728         if (hapd->ap_pin_failures < 3)
 729                 return;
 730
 731         wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN");
 732         hapd->ap_pin_failures = 0;
 733         os_free(hapd->conf->ap_pin);
 734         hapd->conf->ap_pin = NULL;
 735 }
 736
 737 #endif /* CONFIG_WPS */
 738
 739
 740 #ifdef CONFIG_CTRL_IFACE
 741
 742 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
 743                             char *buf, size_t buflen)
 744 {
 745         if (wpa_s->ap_iface == NULL)
 746                 return -1;
 747         return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
 748                                             buf, buflen);
 749 }
 750
 751
 752 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
 753                       char *buf, size_t buflen)
 754 {
 755         if (wpa_s->ap_iface == NULL)
 756                 return -1;
 757         return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
 758                                       buf, buflen);
 759 }
 760
 761
 762 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
 763                            char *buf, size_t buflen)
 764 {
 765         if (wpa_s->ap_iface == NULL)
 766                 return -1;
 767         return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
 768                                            buf, buflen);
 769 }
 770
 771
 772 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
 773                                  size_t buflen, int verbose)
 774 {
 775         char *pos = buf, *end = buf + buflen;
 776         int ret;
 777         struct hostapd_bss_config *conf;
 778
 779         if (wpa_s->ap_iface == NULL)
 780                 return -1;
 781
 782         conf = wpa_s->ap_iface->bss[0]->conf;
 783         if (conf->wpa == 0)
 784                 return 0;
 785
 786         ret = os_snprintf(pos, end - pos,
 787                           "pairwise_cipher=%s\n"
 788                           "group_cipher=%s\n"
 789                           "key_mgmt=%s\n",
 790                           wpa_cipher_txt(conf->rsn_pairwise),
 791                           wpa_cipher_txt(conf->wpa_group),
 792                           wpa_key_mgmt_txt(conf->wpa_key_mgmt,
 793                                            conf->wpa));
 794         if (ret < 0 || ret >= end - pos)
 795                 return pos - buf;
 796         pos += ret;
 797         return pos - buf;
 798 }
 799
 800 #endif /* CONFIG_CTRL_IFACE */
 801
 802
 803 int wpa_supplicant_ap_update_beacon(struct wpa_supplicant *wpa_s)
 804 {
 805         struct hostapd_iface *iface = wpa_s->ap_iface;
 806         struct wpa_ssid *ssid = wpa_s->current_ssid;
 807         struct hostapd_data *hapd;
 808
 809         if (ssid == NULL || wpa_s->ap_iface == NULL)
 810                 return -1;
 811
 812 #ifdef CONFIG_P2P
 813         if (ssid->mode == WPAS_MODE_P2P_GO)
 814                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 815         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 816                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 817                         P2P_GROUP_FORMATION;
 818 #endif /* CONFIG_P2P */
 819
 820         ieee802_11_set_beacons(iface);
 821         hapd = iface->bss[0];
 822         hostapd_set_ap_wps_ie(hapd);
 823
 824         return 0;
 825 }
 826
 827
 828 int wpa_supplicant_ap_mac_addr_filter(struct wpa_supplicant *wpa_s,
 829                                       const u8 *addr)
 830 {
 831         struct hostapd_data *hapd;
 832         struct hostapd_bss_config *conf;
 833
 834         if (!wpa_s->ap_iface)
 835                 return -1;
 836
 837         if (addr)
 838                 wpa_printf(MSG_DEBUG, "AP: Set MAC address filter: " MACSTR,
 839                            MAC2STR(addr));
 840         else
 841                 wpa_printf(MSG_DEBUG, "AP: Clear MAC address filter");
 842
 843         hapd = wpa_s->ap_iface->bss[0];
 844         conf = hapd->conf;
 845
 846         os_free(conf->accept_mac);
 847         conf->accept_mac = NULL;
 848         conf->num_accept_mac = 0;
 849         os_free(conf->deny_mac);
 850         conf->deny_mac = NULL;
 851         conf->num_deny_mac = 0;
 852
 853         if (addr == NULL) {
 854                 conf->macaddr_acl = ACCEPT_UNLESS_DENIED;
 855                 return 0;
 856         }
 857
 858         conf->macaddr_acl = DENY_UNLESS_ACCEPTED;
 859         conf->accept_mac = os_zalloc(sizeof(struct mac_acl_entry));
 860         if (conf->accept_mac == NULL)
 861                 return -1;
 862         os_memcpy(conf->accept_mac[0].addr, addr, ETH_ALEN);
 863         conf->num_accept_mac = 1;
 864
 865         return 0;
 866 }