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         struct wps_event_fail *fail = &data->fail;
 230
 231         if (event == WPS_EV_FAIL && wpa_s->parent && wpa_s->parent != wpa_s &&
 232             wpa_s == wpa_s->global->p2p_group_formation) {
 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         wpas_p2p_wps_failed(wpa_s, fail);
 244 #endif /* CONFIG_P2P */
 245 }
 246
 247
 248 static void ap_sta_authorized_cb(void *ctx, const u8 *mac_addr,
 249                                  int authorized)
 250 {
 251         wpas_notify_sta_authorized(ctx, mac_addr, authorized);
 252 }
 253
 254
 255 static int ap_vendor_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 256 {
 257 #ifdef CONFIG_P2P
 258         struct wpa_supplicant *wpa_s = ctx;
 259         const struct ieee80211_mgmt *mgmt;
 260         size_t hdr_len;
 261
 262         mgmt = (const struct ieee80211_mgmt *) buf;
 263         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 264         if (hdr_len > len)
 265                 return -1;
 266         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 267                            mgmt->u.action.category,
 268                            &mgmt->u.action.u.vs_public_action.action,
 269                            len - hdr_len, freq);
 270 #endif /* CONFIG_P2P */
 271         return 0;
 272 }
 273
 274
 275 static int ap_probe_req_rx(void *ctx, const u8 *addr, const u8 *ie,
 276                            size_t ie_len)
 277 {
 278 #ifdef CONFIG_P2P
 279         struct wpa_supplicant *wpa_s = ctx;
 280         return wpas_p2p_probe_req_rx(wpa_s, addr, ie, ie_len);
 281 #else /* CONFIG_P2P */
 282         return 0;
 283 #endif /* CONFIG_P2P */
 284 }
 285
 286
 287 static void ap_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 288                                   const u8 *uuid_e)
 289 {
 290 #ifdef CONFIG_P2P
 291         struct wpa_supplicant *wpa_s = ctx;
 292         wpas_p2p_wps_success(wpa_s, mac_addr, 1);
 293 #endif /* CONFIG_P2P */
 294 }
 295
 296
 297 static void wpas_ap_configured_cb(void *ctx)
 298 {
 299         struct wpa_supplicant *wpa_s = ctx;
 300
 301         wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 302
 303         if (wpa_s->ap_configured_cb)
 304                 wpa_s->ap_configured_cb(wpa_s->ap_configured_cb_ctx,
 305                                         wpa_s->ap_configured_cb_data);
 306 }
 307
 308
 309 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
 310                              struct wpa_ssid *ssid)
 311 {
 312         struct wpa_driver_associate_params params;
 313         struct hostapd_iface *hapd_iface;
 314         struct hostapd_config *conf;
 315         size_t i;
 316
 317         if (ssid->ssid == NULL || ssid->ssid_len == 0) {
 318                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 319                 return -1;
 320         }
 321
 322         wpa_supplicant_ap_deinit(wpa_s);
 323
 324         wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
 325                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 326
 327         os_memset(&params, 0, sizeof(params));
 328         params.ssid = ssid->ssid;
 329         params.ssid_len = ssid->ssid_len;
 330         switch (ssid->mode) {
 331         case WPAS_MODE_INFRA:
 332                 params.mode = IEEE80211_MODE_INFRA;
 333                 break;
 334         case WPAS_MODE_IBSS:
 335                 params.mode = IEEE80211_MODE_IBSS;
 336                 break;
 337         case WPAS_MODE_AP:
 338         case WPAS_MODE_P2P_GO:
 339         case WPAS_MODE_P2P_GROUP_FORMATION:
 340                 params.mode = IEEE80211_MODE_AP;
 341                 break;
 342         }
 343         params.freq = ssid->frequency;
 344
 345         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK)
 346                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
 347         else
 348                 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
 349         params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
 350
 351         if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
 352                 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
 353         else if (ssid->pairwise_cipher & WPA_CIPHER_TKIP)
 354                 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
 355         else if (ssid->pairwise_cipher & WPA_CIPHER_NONE)
 356                 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 357         else {
 358                 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
 359                            "cipher.");
 360                 return -1;
 361         }
 362         params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
 363         params.group_suite = params.pairwise_suite;
 364
 365 #ifdef CONFIG_P2P
 366         if (ssid->mode == WPAS_MODE_P2P_GO ||
 367             ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 368                 params.p2p = 1;
 369         wpa_drv_set_intra_bss(wpa_s, wpa_s->conf->p2p_intra_bss);
 370 #endif /* CONFIG_P2P */
 371
 372         if (wpa_s->parent->set_ap_uapsd)
 373                 params.uapsd = wpa_s->parent->ap_uapsd;
 374         else
 375                 params.uapsd = -1;
 376
 377         if (wpa_drv_associate(wpa_s, &params) < 0) {
 378                 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
 379                 return -1;
 380         }
 381
 382         wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
 383         if (hapd_iface == NULL)
 384                 return -1;
 385         hapd_iface->owner = wpa_s;
 386
 387         wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
 388         if (conf == NULL) {
 389                 wpa_supplicant_ap_deinit(wpa_s);
 390                 return -1;
 391         }
 392
 393         if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
 394                 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
 395                 wpa_supplicant_ap_deinit(wpa_s);
 396                 return -1;
 397         }
 398
 399 #ifdef CONFIG_P2P
 400         if (ssid->mode == WPAS_MODE_P2P_GO)
 401                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 402         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 403                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 404                         P2P_GROUP_FORMATION;
 405 #endif /* CONFIG_P2P */
 406
 407         hapd_iface->num_bss = conf->num_bss;
 408         hapd_iface->bss = os_zalloc(conf->num_bss *
 409                                     sizeof(struct hostapd_data *));
 410         if (hapd_iface->bss == NULL) {
 411                 wpa_supplicant_ap_deinit(wpa_s);
 412                 return -1;
 413         }
 414
 415         for (i = 0; i < conf->num_bss; i++) {
 416                 hapd_iface->bss[i] =
 417                         hostapd_alloc_bss_data(hapd_iface, conf,
 418                                                &conf->bss[i]);
 419                 if (hapd_iface->bss[i] == NULL) {
 420                         wpa_supplicant_ap_deinit(wpa_s);
 421                         return -1;
 422                 }
 423
 424                 hapd_iface->bss[i]->msg_ctx = wpa_s;
 425                 hapd_iface->bss[i]->public_action_cb = ap_public_action_rx;
 426                 hapd_iface->bss[i]->public_action_cb_ctx = wpa_s;
 427                 hapd_iface->bss[i]->vendor_action_cb = ap_vendor_action_rx;
 428                 hapd_iface->bss[i]->vendor_action_cb_ctx = wpa_s;
 429                 hostapd_register_probereq_cb(hapd_iface->bss[i],
 430                                              ap_probe_req_rx, wpa_s);
 431                 hapd_iface->bss[i]->wps_reg_success_cb = ap_wps_reg_success_cb;
 432                 hapd_iface->bss[i]->wps_reg_success_cb_ctx = wpa_s;
 433                 hapd_iface->bss[i]->wps_event_cb = ap_wps_event_cb;
 434                 hapd_iface->bss[i]->wps_event_cb_ctx = wpa_s;
 435                 hapd_iface->bss[i]->sta_authorized_cb = ap_sta_authorized_cb;
 436                 hapd_iface->bss[i]->sta_authorized_cb_ctx = wpa_s;
 437 #ifdef CONFIG_P2P
 438                 hapd_iface->bss[i]->p2p = wpa_s->global->p2p;
 439                 hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(
 440                         wpa_s, ssid->p2p_persistent_group,
 441                         ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION);
 442 #endif /* CONFIG_P2P */
 443                 hapd_iface->bss[i]->setup_complete_cb = wpas_ap_configured_cb;
 444                 hapd_iface->bss[i]->setup_complete_cb_ctx = wpa_s;
 445         }
 446
 447         os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
 448         hapd_iface->bss[0]->driver = wpa_s->driver;
 449         hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
 450
 451         wpa_s->current_ssid = ssid;
 452         os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
 453         wpa_s->assoc_freq = ssid->frequency;
 454
 455         if (hostapd_setup_interface(wpa_s->ap_iface)) {
 456                 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
 457                 wpa_supplicant_ap_deinit(wpa_s);
 458                 return -1;
 459         }
 460
 461         return 0;
 462 }
 463
 464
 465 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
 466 {
 467 #ifdef CONFIG_WPS
 468         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 469 #endif /* CONFIG_WPS */
 470
 471         if (wpa_s->ap_iface == NULL)
 472                 return;
 473
 474         wpa_s->current_ssid = NULL;
 475         wpa_s->assoc_freq = 0;
 476 #ifdef CONFIG_P2P
 477         if (wpa_s->ap_iface->bss)
 478                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
 479         wpas_p2p_group_deinit(wpa_s);
 480 #endif /* CONFIG_P2P */
 481         hostapd_interface_deinit(wpa_s->ap_iface);
 482         hostapd_interface_free(wpa_s->ap_iface);
 483         wpa_s->ap_iface = NULL;
 484         wpa_drv_deinit_ap(wpa_s);
 485 }
 486
 487
 488 void ap_tx_status(void *ctx, const u8 *addr,
 489                   const u8 *buf, size_t len, int ack)
 490 {
 491 #ifdef NEED_AP_MLME
 492         struct wpa_supplicant *wpa_s = ctx;
 493         hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
 494 #endif /* NEED_AP_MLME */
 495 }
 496
 497
 498 void ap_rx_from_unknown_sta(void *ctx, const u8 *frame, size_t len)
 499 {
 500 #ifdef NEED_AP_MLME
 501         struct wpa_supplicant *wpa_s = ctx;
 502         const struct ieee80211_hdr *hdr =
 503                 (const struct ieee80211_hdr *) frame;
 504         u16 fc = le_to_host16(hdr->frame_control);
 505         ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], hdr->addr2,
 506                                    (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
 507                                    (WLAN_FC_TODS | WLAN_FC_FROMDS));
 508 #endif /* NEED_AP_MLME */
 509 }
 510
 511
 512 void ap_mgmt_rx(void *ctx, struct rx_mgmt *rx_mgmt)
 513 {
 514 #ifdef NEED_AP_MLME
 515         struct wpa_supplicant *wpa_s = ctx;
 516         struct hostapd_frame_info fi;
 517         os_memset(&fi, 0, sizeof(fi));
 518         fi.datarate = rx_mgmt->datarate;
 519         fi.ssi_signal = rx_mgmt->ssi_signal;
 520         ieee802_11_mgmt(wpa_s->ap_iface->bss[0], rx_mgmt->frame,
 521                         rx_mgmt->frame_len, &fi);
 522 #endif /* NEED_AP_MLME */
 523 }
 524
 525
 526 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
 527 {
 528 #ifdef NEED_AP_MLME
 529         struct wpa_supplicant *wpa_s = ctx;
 530         ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
 531 #endif /* NEED_AP_MLME */
 532 }
 533
 534
 535 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
 536                                 const u8 *src_addr, const u8 *buf, size_t len)
 537 {
 538         ieee802_1x_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
 539 }
 540
 541
 542 #ifdef CONFIG_WPS
 543
 544 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 545                               const u8 *p2p_dev_addr)
 546 {
 547         if (!wpa_s->ap_iface)
 548                 return -1;
 549         return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0],
 550                                          p2p_dev_addr);
 551 }
 552
 553
 554 static int wpa_supplicant_ap_wps_sta_cancel(struct hostapd_data *hapd,
 555                                             struct sta_info *sta, void *ctx)
 556 {
 557         if (sta && (sta->flags & WLAN_STA_WPS)) {
 558                 ap_sta_deauthenticate(hapd, sta,
 559                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 560                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 561                            __func__, MAC2STR(sta->addr));
 562                 return 1;
 563         }
 564
 565         return 0;
 566 }
 567
 568
 569 int wpa_supplicant_ap_wps_cancel(struct wpa_supplicant *wpa_s)
 570 {
 571         struct wps_registrar *reg;
 572         int reg_sel = 0, wps_sta = 0;
 573
 574         if (!wpa_s->ap_iface || !wpa_s->ap_iface->bss[0]->wps)
 575                 return -1;
 576
 577         reg = wpa_s->ap_iface->bss[0]->wps->registrar;
 578         reg_sel = wps_registrar_wps_cancel(reg);
 579         wps_sta = ap_for_each_sta(wpa_s->ap_iface->bss[0],
 580                                   wpa_supplicant_ap_wps_sta_cancel, NULL);
 581
 582         if (!reg_sel && !wps_sta) {
 583                 wpa_printf(MSG_DEBUG, "No WPS operation in progress at this "
 584                            "time");
 585                 return -1;
 586         }
 587
 588         /*
 589          * There are 2 cases to return wps cancel as success:
 590          * 1. When wps cancel was initiated but no connection has been
 591          *    established with client yet.
 592          * 2. Client is in the middle of exchanging WPS messages.
 593          */
 594
 595         return 0;
 596 }
 597
 598
 599 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 600                               const char *pin, char *buf, size_t buflen)
 601 {
 602         int ret, ret_len = 0;
 603
 604         if (!wpa_s->ap_iface)
 605                 return -1;
 606
 607         if (pin == NULL) {
 608                 unsigned int rpin = wps_generate_pin();
 609                 ret_len = os_snprintf(buf, buflen, "%d", rpin);
 610                 pin = buf;
 611         } else
 612                 ret_len = os_snprintf(buf, buflen, "%s", pin);
 613
 614         ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], bssid, "any", pin,
 615                                   0);
 616         if (ret)
 617                 return -1;
 618         return ret_len;
 619 }
 620
 621
 622 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
 623 {
 624         struct wpa_supplicant *wpa_s = eloop_data;
 625         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
 626         wpas_wps_ap_pin_disable(wpa_s);
 627 }
 628
 629
 630 static void wpas_wps_ap_pin_enable(struct wpa_supplicant *wpa_s, int timeout)
 631 {
 632         struct hostapd_data *hapd;
 633
 634         if (wpa_s->ap_iface == NULL)
 635                 return;
 636         hapd = wpa_s->ap_iface->bss[0];
 637         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
 638         hapd->ap_pin_failures = 0;
 639         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 640         if (timeout > 0)
 641                 eloop_register_timeout(timeout, 0,
 642                                        wpas_wps_ap_pin_timeout, wpa_s, NULL);
 643 }
 644
 645
 646 void wpas_wps_ap_pin_disable(struct wpa_supplicant *wpa_s)
 647 {
 648         struct hostapd_data *hapd;
 649
 650         if (wpa_s->ap_iface == NULL)
 651                 return;
 652         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
 653         hapd = wpa_s->ap_iface->bss[0];
 654         os_free(hapd->conf->ap_pin);
 655         hapd->conf->ap_pin = NULL;
 656         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 657 }
 658
 659
 660 const char * wpas_wps_ap_pin_random(struct wpa_supplicant *wpa_s, int timeout)
 661 {
 662         struct hostapd_data *hapd;
 663         unsigned int pin;
 664         char pin_txt[9];
 665
 666         if (wpa_s->ap_iface == NULL)
 667                 return NULL;
 668         hapd = wpa_s->ap_iface->bss[0];
 669         pin = wps_generate_pin();
 670         os_snprintf(pin_txt, sizeof(pin_txt), "%u", pin);
 671         os_free(hapd->conf->ap_pin);
 672         hapd->conf->ap_pin = os_strdup(pin_txt);
 673         if (hapd->conf->ap_pin == NULL)
 674                 return NULL;
 675         wpas_wps_ap_pin_enable(wpa_s, timeout);
 676
 677         return hapd->conf->ap_pin;
 678 }
 679
 680
 681 const char * wpas_wps_ap_pin_get(struct wpa_supplicant *wpa_s)
 682 {
 683         struct hostapd_data *hapd;
 684         if (wpa_s->ap_iface == NULL)
 685                 return NULL;
 686         hapd = wpa_s->ap_iface->bss[0];
 687         return hapd->conf->ap_pin;
 688 }
 689
 690
 691 int wpas_wps_ap_pin_set(struct wpa_supplicant *wpa_s, const char *pin,
 692                         int timeout)
 693 {
 694         struct hostapd_data *hapd;
 695         char pin_txt[9];
 696         int ret;
 697
 698         if (wpa_s->ap_iface == NULL)
 699                 return -1;
 700         hapd = wpa_s->ap_iface->bss[0];
 701         ret = os_snprintf(pin_txt, sizeof(pin_txt), "%s", pin);
 702         if (ret < 0 || ret >= (int) sizeof(pin_txt))
 703                 return -1;
 704         os_free(hapd->conf->ap_pin);
 705         hapd->conf->ap_pin = os_strdup(pin_txt);
 706         if (hapd->conf->ap_pin == NULL)
 707                 return -1;
 708         wpas_wps_ap_pin_enable(wpa_s, timeout);
 709
 710         return 0;
 711 }
 712
 713
 714 void wpa_supplicant_ap_pwd_auth_fail(struct wpa_supplicant *wpa_s)
 715 {
 716         struct hostapd_data *hapd;
 717
 718         if (wpa_s->ap_iface == NULL)
 719                 return;
 720         hapd = wpa_s->ap_iface->bss[0];
 721
 722         /*
 723          * Registrar failed to prove its knowledge of the AP PIN. Disable AP
 724          * PIN if this happens multiple times to slow down brute force attacks.
 725          */
 726         hapd->ap_pin_failures++;
 727         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u",
 728                    hapd->ap_pin_failures);
 729         if (hapd->ap_pin_failures < 3)
 730                 return;
 731
 732         wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN");
 733         hapd->ap_pin_failures = 0;
 734         os_free(hapd->conf->ap_pin);
 735         hapd->conf->ap_pin = NULL;
 736 }
 737
 738 #endif /* CONFIG_WPS */
 739
 740
 741 #ifdef CONFIG_CTRL_IFACE
 742
 743 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
 744                             char *buf, size_t buflen)
 745 {
 746         if (wpa_s->ap_iface == NULL)
 747                 return -1;
 748         return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
 749                                             buf, buflen);
 750 }
 751
 752
 753 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
 754                       char *buf, size_t buflen)
 755 {
 756         if (wpa_s->ap_iface == NULL)
 757                 return -1;
 758         return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
 759                                       buf, buflen);
 760 }
 761
 762
 763 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
 764                            char *buf, size_t buflen)
 765 {
 766         if (wpa_s->ap_iface == NULL)
 767                 return -1;
 768         return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
 769                                            buf, buflen);
 770 }
 771
 772
 773 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
 774                                  size_t buflen, int verbose)
 775 {
 776         char *pos = buf, *end = buf + buflen;
 777         int ret;
 778         struct hostapd_bss_config *conf;
 779
 780         if (wpa_s->ap_iface == NULL)
 781                 return -1;
 782
 783         conf = wpa_s->ap_iface->bss[0]->conf;
 784         if (conf->wpa == 0)
 785                 return 0;
 786
 787         ret = os_snprintf(pos, end - pos,
 788                           "pairwise_cipher=%s\n"
 789                           "group_cipher=%s\n"
 790                           "key_mgmt=%s\n",
 791                           wpa_cipher_txt(conf->rsn_pairwise),
 792                           wpa_cipher_txt(conf->wpa_group),
 793                           wpa_key_mgmt_txt(conf->wpa_key_mgmt,
 794                                            conf->wpa));
 795         if (ret < 0 || ret >= end - pos)
 796                 return pos - buf;
 797         pos += ret;
 798         return pos - buf;
 799 }
 800
 801 #endif /* CONFIG_CTRL_IFACE */
 802
 803
 804 int wpa_supplicant_ap_update_beacon(struct wpa_supplicant *wpa_s)
 805 {
 806         struct hostapd_iface *iface = wpa_s->ap_iface;
 807         struct wpa_ssid *ssid = wpa_s->current_ssid;
 808         struct hostapd_data *hapd;
 809
 810         if (ssid == NULL || wpa_s->ap_iface == NULL)
 811                 return -1;
 812
 813 #ifdef CONFIG_P2P
 814         if (ssid->mode == WPAS_MODE_P2P_GO)
 815                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 816         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 817                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 818                         P2P_GROUP_FORMATION;
 819 #endif /* CONFIG_P2P */
 820
 821         ieee802_11_set_beacons(iface);
 822         hapd = iface->bss[0];
 823         hostapd_set_ap_wps_ie(hapd);
 824
 825         return 0;
 826 }
 827
 828
 829 int wpa_supplicant_ap_mac_addr_filter(struct wpa_supplicant *wpa_s,
 830                                       const u8 *addr)
 831 {
 832         struct hostapd_data *hapd;
 833         struct hostapd_bss_config *conf;
 834
 835         if (!wpa_s->ap_iface)
 836                 return -1;
 837
 838         if (addr)
 839                 wpa_printf(MSG_DEBUG, "AP: Set MAC address filter: " MACSTR,
 840                            MAC2STR(addr));
 841         else
 842                 wpa_printf(MSG_DEBUG, "AP: Clear MAC address filter");
 843
 844         hapd = wpa_s->ap_iface->bss[0];
 845         conf = hapd->conf;
 846
 847         os_free(conf->accept_mac);
 848         conf->accept_mac = NULL;
 849         conf->num_accept_mac = 0;
 850         os_free(conf->deny_mac);
 851         conf->deny_mac = NULL;
 852         conf->num_deny_mac = 0;
 853
 854         if (addr == NULL) {
 855                 conf->macaddr_acl = ACCEPT_UNLESS_DENIED;
 856                 return 0;
 857         }
 858
 859         conf->macaddr_acl = DENY_UNLESS_ACCEPTED;
 860         conf->accept_mac = os_zalloc(sizeof(struct mac_acl_entry));
 861         if (conf->accept_mac == NULL)
 862                 return -1;
 863         os_memcpy(conf->accept_mac[0].addr, addr, ETH_ALEN);
 864         conf->num_accept_mac = 1;
 865
 866         return 0;
 867 }