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 "common/ieee802_11_defs.h"
  21 #include "common/wpa_ctrl.h"
  22 #include "ap/hostapd.h"
  23 #include "ap/ap_config.h"
  24 #ifdef NEED_AP_MLME
  25 #include "ap/ieee802_11.h"
  26 #endif /* NEED_AP_MLME */
  27 #include "ap/beacon.h"
  28 #include "ap/ieee802_1x.h"
  29 #include "ap/wps_hostapd.h"
  30 #include "ap/ctrl_iface_ap.h"
  31 #include "eap_common/eap_defs.h"
  32 #include "eap_server/eap_methods.h"
  33 #include "eap_common/eap_wsc_common.h"
  34 #include "wps/wps.h"
  35 #include "common/ieee802_11_defs.h"
  36 #include "config_ssid.h"
  37 #include "config.h"
  38 #include "wpa_supplicant_i.h"
  39 #include "driver_i.h"
  40 #include "p2p_supplicant.h"
  41 #include "ap.h"
  42 #include "ap/sta_info.h"
  43
  44
  45 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
  46
  47
  48 static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
  49                                   struct wpa_ssid *ssid,
  50                                   struct hostapd_config *conf)
  51 {
  52         struct hostapd_bss_config *bss = &conf->bss[0];
  53         int pairwise;
  54
  55         conf->driver = wpa_s->driver;
  56
  57         os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
  58
  59         if (ssid->frequency == 0) {
  60                 /* default channel 11 */
  61                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
  62                 conf->channel = 11;
  63         } else if (ssid->frequency >= 2412 && ssid->frequency <= 2472) {
  64                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
  65                 conf->channel = (ssid->frequency - 2407) / 5;
  66         } else if ((ssid->frequency >= 5180 && ssid->frequency <= 5240) ||
  67                    (ssid->frequency >= 5745 && ssid->frequency <= 5825)) {
  68                 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
  69                 conf->channel = (ssid->frequency - 5000) / 5;
  70         } else {
  71                 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
  72                            ssid->frequency);
  73                 return -1;
  74         }
  75
  76         /* TODO: enable HT if driver supports it;
  77          * drop to 11b if driver does not support 11g */
  78
  79 #ifdef CONFIG_P2P
  80         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
  81                 /* Remove 802.11b rates from supported and basic rate sets */
  82                 int *list = os_malloc(4 * sizeof(int));
  83                 if (list) {
  84                         list[0] = 60;
  85                         list[1] = 120;
  86                         list[2] = 240;
  87                         list[3] = -1;
  88                 }
  89                 conf->basic_rates = list;
  90
  91                 list = os_malloc(9 * sizeof(int));
  92                 if (list) {
  93                         list[0] = 60;
  94                         list[1] = 90;
  95                         list[2] = 120;
  96                         list[3] = 180;
  97                         list[4] = 240;
  98                         list[5] = 360;
  99                         list[6] = 480;
 100                         list[7] = 540;
 101                         list[8] = -1;
 102                 }
 103                 conf->supported_rates = list;
 104         }
 105 #endif /* CONFIG_P2P */
 106
 107         if (ssid->ssid_len == 0) {
 108                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 109                 return -1;
 110         }
 111         os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
 112         bss->ssid.ssid[ssid->ssid_len] = '\0';
 113         bss->ssid.ssid_len = ssid->ssid_len;
 114         bss->ssid.ssid_set = 1;
 115
 116         if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
 117                 bss->wpa = ssid->proto;
 118         bss->wpa_key_mgmt = ssid->key_mgmt;
 119         bss->wpa_pairwise = ssid->pairwise_cipher;
 120         if (ssid->passphrase) {
 121                 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
 122         } else if (ssid->psk_set) {
 123                 os_free(bss->ssid.wpa_psk);
 124                 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
 125                 if (bss->ssid.wpa_psk == NULL)
 126                         return -1;
 127                 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
 128                 bss->ssid.wpa_psk->group = 1;
 129         }
 130
 131         /* Select group cipher based on the enabled pairwise cipher suites */
 132         pairwise = 0;
 133         if (bss->wpa & 1)
 134                 pairwise |= bss->wpa_pairwise;
 135         if (bss->wpa & 2) {
 136                 if (bss->rsn_pairwise == 0)
 137                         bss->rsn_pairwise = bss->wpa_pairwise;
 138                 pairwise |= bss->rsn_pairwise;
 139         }
 140         if (pairwise & WPA_CIPHER_TKIP)
 141                 bss->wpa_group = WPA_CIPHER_TKIP;
 142         else
 143                 bss->wpa_group = WPA_CIPHER_CCMP;
 144
 145         if (bss->wpa && bss->ieee802_1x)
 146                 bss->ssid.security_policy = SECURITY_WPA;
 147         else if (bss->wpa)
 148                 bss->ssid.security_policy = SECURITY_WPA_PSK;
 149         else if (bss->ieee802_1x) {
 150                 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
 151                 bss->ssid.wep.default_len = bss->default_wep_key_len;
 152         } else if (bss->ssid.wep.keys_set)
 153                 bss->ssid.security_policy = SECURITY_STATIC_WEP;
 154         else
 155                 bss->ssid.security_policy = SECURITY_PLAINTEXT;
 156
 157 #ifdef CONFIG_WPS
 158         /*
 159          * Enable WPS by default, but require user interaction to actually use
 160          * it. Only the internal Registrar is supported.
 161          */
 162         bss->eap_server = 1;
 163         bss->wps_state = 2;
 164         bss->ap_setup_locked = 2;
 165         if (wpa_s->conf->config_methods)
 166                 bss->config_methods = os_strdup(wpa_s->conf->config_methods);
 167         if (wpa_s->conf->device_type)
 168                 bss->device_type = os_strdup(wpa_s->conf->device_type);
 169         if (wpa_s->conf->device_name) {
 170                 bss->device_name = os_strdup(wpa_s->conf->device_name);
 171                 bss->friendly_name = os_strdup(wpa_s->conf->device_name);
 172         }
 173         if (wpa_s->conf->manufacturer)
 174                 bss->manufacturer = os_strdup(wpa_s->conf->manufacturer);
 175         if (wpa_s->conf->model_name)
 176                 bss->model_name = os_strdup(wpa_s->conf->model_name);
 177         if (wpa_s->conf->model_number)
 178                 bss->model_number = os_strdup(wpa_s->conf->model_number);
 179         if (wpa_s->conf->serial_number)
 180                 bss->serial_number = os_strdup(wpa_s->conf->serial_number);
 181         os_memcpy(bss->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
 182         os_memcpy(bss->os_version, wpa_s->conf->os_version, 4);
 183 #endif /* CONFIG_WPS */
 184
 185         if (wpa_s->max_stations &&
 186             wpa_s->max_stations < wpa_s->conf->max_num_sta)
 187                 bss->max_num_sta = wpa_s->max_stations;
 188         else
 189                 bss->max_num_sta = wpa_s->conf->max_num_sta;
 190
 191         return 0;
 192 }
 193
 194
 195 static void ap_public_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 196 {
 197 #ifdef CONFIG_P2P
 198         struct wpa_supplicant *wpa_s = ctx;
 199         const struct ieee80211_mgmt *mgmt;
 200         size_t hdr_len;
 201
 202         mgmt = (const struct ieee80211_mgmt *) buf;
 203         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 204         if (hdr_len > len)
 205                 return;
 206         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 207                            mgmt->u.action.category,
 208                            &mgmt->u.action.u.vs_public_action.action,
 209                            len - hdr_len, freq);
 210 #endif /* CONFIG_P2P */
 211 }
 212
 213
 214 static void ap_wps_event_cb(void *ctx, enum wps_event event,
 215                             union wps_event_data *data)
 216 {
 217 #ifdef CONFIG_P2P
 218         struct wpa_supplicant *wpa_s = ctx;
 219
 220         if (event == WPS_EV_FAIL && wpa_s->parent && wpa_s->parent != wpa_s &&
 221             wpa_s == wpa_s->global->p2p_group_formation) {
 222                 struct wps_event_fail *fail = &data->fail;
 223
 224                 /*
 225                  * src/ap/wps_hostapd.c has already sent this on the main
 226                  * interface, so only send on the parent interface here if
 227                  * needed.
 228                  */
 229                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 230                         "msg=%d config_error=%d",
 231                         fail->msg, fail->config_error);
 232         }
 233 #endif /* CONFIG_P2P */
 234 }
 235
 236
 237 static int ap_vendor_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 238 {
 239 #ifdef CONFIG_P2P
 240         struct wpa_supplicant *wpa_s = ctx;
 241         const struct ieee80211_mgmt *mgmt;
 242         size_t hdr_len;
 243
 244         mgmt = (const struct ieee80211_mgmt *) buf;
 245         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 246         if (hdr_len > len)
 247                 return -1;
 248         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 249                            mgmt->u.action.category,
 250                            &mgmt->u.action.u.vs_public_action.action,
 251                            len - hdr_len, freq);
 252 #endif /* CONFIG_P2P */
 253         return 0;
 254 }
 255
 256
 257 static int ap_probe_req_rx(void *ctx, const u8 *addr, const u8 *ie,
 258                            size_t ie_len)
 259 {
 260 #ifdef CONFIG_P2P
 261         struct wpa_supplicant *wpa_s = ctx;
 262         return wpas_p2p_probe_req_rx(wpa_s, addr, ie, ie_len);
 263 #else /* CONFIG_P2P */
 264         return 0;
 265 #endif /* CONFIG_P2P */
 266 }
 267
 268
 269 static void ap_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 270                                   const u8 *uuid_e)
 271 {
 272 #ifdef CONFIG_P2P
 273         struct wpa_supplicant *wpa_s = ctx;
 274         wpas_p2p_wps_success(wpa_s, mac_addr, 1);
 275 #endif /* CONFIG_P2P */
 276 }
 277
 278
 279 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
 280                              struct wpa_ssid *ssid)
 281 {
 282         struct wpa_driver_associate_params params;
 283         struct hostapd_iface *hapd_iface;
 284         struct hostapd_config *conf;
 285         size_t i;
 286
 287         if (ssid->ssid == NULL || ssid->ssid_len == 0) {
 288                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 289                 return -1;
 290         }
 291
 292         wpa_supplicant_ap_deinit(wpa_s);
 293
 294         wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
 295                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 296
 297         os_memset(&params, 0, sizeof(params));
 298         params.ssid = ssid->ssid;
 299         params.ssid_len = ssid->ssid_len;
 300         switch (ssid->mode) {
 301         case WPAS_MODE_INFRA:
 302                 params.mode = IEEE80211_MODE_INFRA;
 303                 break;
 304         case WPAS_MODE_IBSS:
 305                 params.mode = IEEE80211_MODE_IBSS;
 306                 break;
 307         case WPAS_MODE_AP:
 308         case WPAS_MODE_P2P_GO:
 309         case WPAS_MODE_P2P_GROUP_FORMATION:
 310                 params.mode = IEEE80211_MODE_AP;
 311                 break;
 312         }
 313         params.freq = ssid->frequency;
 314
 315         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK)
 316                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
 317         else
 318                 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
 319         params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
 320
 321         if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
 322                 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
 323         else if (ssid->pairwise_cipher & WPA_CIPHER_TKIP)
 324                 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
 325         else if (ssid->pairwise_cipher & WPA_CIPHER_NONE)
 326                 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 327         else {
 328                 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
 329                            "cipher.");
 330                 return -1;
 331         }
 332         params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
 333         params.group_suite = params.pairwise_suite;
 334
 335 #ifdef CONFIG_P2P
 336         if (ssid->mode == WPAS_MODE_P2P_GO ||
 337             ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 338                 params.p2p = 1;
 339         wpa_drv_set_intra_bss(wpa_s, wpa_s->conf->p2p_intra_bss);
 340 #endif /* CONFIG_P2P */
 341
 342         if (wpa_s->parent->set_ap_uapsd)
 343                 params.uapsd = wpa_s->parent->ap_uapsd;
 344         else
 345                 params.uapsd = -1;
 346
 347         if (wpa_drv_associate(wpa_s, &params) < 0) {
 348                 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
 349                 return -1;
 350         }
 351
 352         wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
 353         if (hapd_iface == NULL)
 354                 return -1;
 355         hapd_iface->owner = wpa_s;
 356
 357         wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
 358         if (conf == NULL) {
 359                 wpa_supplicant_ap_deinit(wpa_s);
 360                 return -1;
 361         }
 362
 363         if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
 364                 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
 365                 wpa_supplicant_ap_deinit(wpa_s);
 366                 return -1;
 367         }
 368
 369 #ifdef CONFIG_P2P
 370         if (ssid->mode == WPAS_MODE_P2P_GO)
 371                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 372         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 373                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 374                         P2P_GROUP_FORMATION;
 375 #endif /* CONFIG_P2P */
 376
 377         hapd_iface->num_bss = conf->num_bss;
 378         hapd_iface->bss = os_zalloc(conf->num_bss *
 379                                     sizeof(struct hostapd_data *));
 380         if (hapd_iface->bss == NULL) {
 381                 wpa_supplicant_ap_deinit(wpa_s);
 382                 return -1;
 383         }
 384
 385         for (i = 0; i < conf->num_bss; i++) {
 386                 hapd_iface->bss[i] =
 387                         hostapd_alloc_bss_data(hapd_iface, conf,
 388                                                &conf->bss[i]);
 389                 if (hapd_iface->bss[i] == NULL) {
 390                         wpa_supplicant_ap_deinit(wpa_s);
 391                         return -1;
 392                 }
 393
 394                 hapd_iface->bss[i]->msg_ctx = wpa_s;
 395                 hapd_iface->bss[i]->public_action_cb = ap_public_action_rx;
 396                 hapd_iface->bss[i]->public_action_cb_ctx = wpa_s;
 397                 hapd_iface->bss[i]->vendor_action_cb = ap_vendor_action_rx;
 398                 hapd_iface->bss[i]->vendor_action_cb_ctx = wpa_s;
 399                 hostapd_register_probereq_cb(hapd_iface->bss[i],
 400                                              ap_probe_req_rx, wpa_s);
 401                 hapd_iface->bss[i]->wps_reg_success_cb = ap_wps_reg_success_cb;
 402                 hapd_iface->bss[i]->wps_reg_success_cb_ctx = wpa_s;
 403                 hapd_iface->bss[i]->wps_event_cb = ap_wps_event_cb;
 404                 hapd_iface->bss[i]->wps_event_cb_ctx = wpa_s;
 405 #ifdef CONFIG_P2P
 406                 hapd_iface->bss[i]->p2p = wpa_s->global->p2p;
 407                 hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(
 408                         wpa_s, ssid->p2p_persistent_group,
 409                         ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION);
 410 #endif /* CONFIG_P2P */
 411         }
 412
 413         os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
 414         hapd_iface->bss[0]->driver = wpa_s->driver;
 415         hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
 416
 417         if (hostapd_setup_interface(wpa_s->ap_iface)) {
 418                 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
 419                 wpa_supplicant_ap_deinit(wpa_s);
 420                 return -1;
 421         }
 422
 423         wpa_s->current_ssid = ssid;
 424         os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
 425         wpa_s->assoc_freq = ssid->frequency;
 426         wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 427
 428         if (wpa_s->ap_configured_cb)
 429                 wpa_s->ap_configured_cb(wpa_s->ap_configured_cb_ctx,
 430                                         wpa_s->ap_configured_cb_data);
 431
 432         return 0;
 433 }
 434
 435
 436 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
 437 {
 438         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 439
 440         if (wpa_s->ap_iface == NULL)
 441                 return;
 442
 443         wpa_s->current_ssid = NULL;
 444 #ifdef CONFIG_P2P
 445         if (wpa_s->ap_iface->bss)
 446                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
 447         wpas_p2p_group_deinit(wpa_s);
 448 #endif /* CONFIG_P2P */
 449         hostapd_interface_deinit(wpa_s->ap_iface);
 450         hostapd_interface_free(wpa_s->ap_iface);
 451         wpa_s->ap_iface = NULL;
 452         wpa_drv_deinit_ap(wpa_s);
 453 }
 454
 455
 456 void ap_tx_status(void *ctx, const u8 *addr,
 457                   const u8 *buf, size_t len, int ack)
 458 {
 459 #ifdef NEED_AP_MLME
 460         struct wpa_supplicant *wpa_s = ctx;
 461         hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
 462 #endif /* NEED_AP_MLME */
 463 }
 464
 465
 466 void ap_rx_from_unknown_sta(void *ctx, const u8 *frame, size_t len)
 467 {
 468 #ifdef NEED_AP_MLME
 469         struct wpa_supplicant *wpa_s = ctx;
 470         const struct ieee80211_hdr *hdr =
 471                 (const struct ieee80211_hdr *) frame;
 472         u16 fc = le_to_host16(hdr->frame_control);
 473         ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], hdr->addr2,
 474                                    (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
 475                                    (WLAN_FC_TODS | WLAN_FC_FROMDS));
 476 #endif /* NEED_AP_MLME */
 477 }
 478
 479
 480 void ap_mgmt_rx(void *ctx, struct rx_mgmt *rx_mgmt)
 481 {
 482 #ifdef NEED_AP_MLME
 483         struct wpa_supplicant *wpa_s = ctx;
 484         struct hostapd_frame_info fi;
 485         os_memset(&fi, 0, sizeof(fi));
 486         fi.datarate = rx_mgmt->datarate;
 487         fi.ssi_signal = rx_mgmt->ssi_signal;
 488         ieee802_11_mgmt(wpa_s->ap_iface->bss[0], rx_mgmt->frame,
 489                         rx_mgmt->frame_len, &fi);
 490 #endif /* NEED_AP_MLME */
 491 }
 492
 493
 494 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
 495 {
 496 #ifdef NEED_AP_MLME
 497         struct wpa_supplicant *wpa_s = ctx;
 498         ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
 499 #endif /* NEED_AP_MLME */
 500 }
 501
 502
 503 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
 504                                 const u8 *src_addr, const u8 *buf, size_t len)
 505 {
 506         ieee802_1x_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
 507 }
 508
 509
 510 #ifdef CONFIG_WPS
 511
 512 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
 513 {
 514         if (!wpa_s->ap_iface)
 515                 return -1;
 516         return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0]);
 517 }
 518
 519
 520 static int wpa_supplicant_ap_wps_sta_cancel(struct hostapd_data *hapd,
 521                                             struct sta_info *sta, void *ctx)
 522 {
 523         if (sta && (sta->flags & WLAN_STA_WPS)) {
 524                 ap_sta_deauthenticate(hapd, sta,
 525                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 526                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 527                            __func__, MAC2STR(sta->addr));
 528                 return 1;
 529         }
 530
 531         return 0;
 532 }
 533
 534
 535 int wpa_supplicant_ap_wps_cancel(struct wpa_supplicant *wpa_s)
 536 {
 537         struct wps_registrar *reg;
 538         int reg_sel = 0, wps_sta = 0;
 539
 540         if (!wpa_s->ap_iface || !wpa_s->ap_iface->bss[0]->wps)
 541                 return -1;
 542
 543         reg = wpa_s->ap_iface->bss[0]->wps->registrar;
 544         reg_sel = wps_registrar_wps_cancel(reg);
 545         wps_sta = ap_for_each_sta(wpa_s->ap_iface->bss[0],
 546                                   wpa_supplicant_ap_wps_sta_cancel, NULL);
 547
 548         if (!reg_sel && !wps_sta) {
 549                 wpa_printf(MSG_DEBUG, "No WPS operation in progress at this "
 550                            "time");
 551                 return -1;
 552         }
 553
 554         /*
 555          * There are 2 cases to return wps cancel as success:
 556          * 1. When wps cancel was initiated but no connection has been
 557          *    established with client yet.
 558          * 2. Client is in the middle of exchanging WPS messages.
 559          */
 560
 561         return 0;
 562 }
 563
 564
 565 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 566                               const char *pin, char *buf, size_t buflen)
 567 {
 568         int ret, ret_len = 0;
 569
 570         if (!wpa_s->ap_iface)
 571                 return -1;
 572
 573         if (pin == NULL) {
 574                 unsigned int rpin = wps_generate_pin();
 575                 ret_len = os_snprintf(buf, buflen, "%d", rpin);
 576                 pin = buf;
 577         } else
 578                 ret_len = os_snprintf(buf, buflen, "%s", pin);
 579
 580         ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], bssid, "any", pin,
 581                                   0);
 582         if (ret)
 583                 return -1;
 584         return ret_len;
 585 }
 586
 587
 588 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
 589 {
 590         struct wpa_supplicant *wpa_s = eloop_data;
 591         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
 592         wpas_wps_ap_pin_disable(wpa_s);
 593 }
 594
 595
 596 static void wpas_wps_ap_pin_enable(struct wpa_supplicant *wpa_s, int timeout)
 597 {
 598         struct hostapd_data *hapd;
 599
 600         if (wpa_s->ap_iface == NULL)
 601                 return;
 602         hapd = wpa_s->ap_iface->bss[0];
 603         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
 604         hapd->ap_pin_failures = 0;
 605         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 606         if (timeout > 0)
 607                 eloop_register_timeout(timeout, 0,
 608                                        wpas_wps_ap_pin_timeout, wpa_s, NULL);
 609 }
 610
 611
 612 void wpas_wps_ap_pin_disable(struct wpa_supplicant *wpa_s)
 613 {
 614         struct hostapd_data *hapd;
 615
 616         if (wpa_s->ap_iface == NULL)
 617                 return;
 618         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
 619         hapd = wpa_s->ap_iface->bss[0];
 620         os_free(hapd->conf->ap_pin);
 621         hapd->conf->ap_pin = NULL;
 622         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 623 }
 624
 625
 626 const char * wpas_wps_ap_pin_random(struct wpa_supplicant *wpa_s, int timeout)
 627 {
 628         struct hostapd_data *hapd;
 629         unsigned int pin;
 630         char pin_txt[9];
 631
 632         if (wpa_s->ap_iface == NULL)
 633                 return NULL;
 634         hapd = wpa_s->ap_iface->bss[0];
 635         pin = wps_generate_pin();
 636         os_snprintf(pin_txt, sizeof(pin_txt), "%u", pin);
 637         os_free(hapd->conf->ap_pin);
 638         hapd->conf->ap_pin = os_strdup(pin_txt);
 639         if (hapd->conf->ap_pin == NULL)
 640                 return NULL;
 641         wpas_wps_ap_pin_enable(wpa_s, timeout);
 642
 643         return hapd->conf->ap_pin;
 644 }
 645
 646
 647 const char * wpas_wps_ap_pin_get(struct wpa_supplicant *wpa_s)
 648 {
 649         struct hostapd_data *hapd;
 650         if (wpa_s->ap_iface == NULL)
 651                 return NULL;
 652         hapd = wpa_s->ap_iface->bss[0];
 653         return hapd->conf->ap_pin;
 654 }
 655
 656
 657 int wpas_wps_ap_pin_set(struct wpa_supplicant *wpa_s, const char *pin,
 658                         int timeout)
 659 {
 660         struct hostapd_data *hapd;
 661         char pin_txt[9];
 662         int ret;
 663
 664         if (wpa_s->ap_iface == NULL)
 665                 return -1;
 666         hapd = wpa_s->ap_iface->bss[0];
 667         ret = os_snprintf(pin_txt, sizeof(pin_txt), "%s", pin);
 668         if (ret < 0 || ret >= (int) sizeof(pin_txt))
 669                 return -1;
 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 -1;
 674         wpas_wps_ap_pin_enable(wpa_s, timeout);
 675
 676         return 0;
 677 }
 678
 679
 680 void wpa_supplicant_ap_pwd_auth_fail(struct wpa_supplicant *wpa_s)
 681 {
 682         struct hostapd_data *hapd;
 683
 684         if (wpa_s->ap_iface == NULL)
 685                 return;
 686         hapd = wpa_s->ap_iface->bss[0];
 687
 688         /*
 689          * Registrar failed to prove its knowledge of the AP PIN. Disable AP
 690          * PIN if this happens multiple times to slow down brute force attacks.
 691          */
 692         hapd->ap_pin_failures++;
 693         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u",
 694                    hapd->ap_pin_failures);
 695         if (hapd->ap_pin_failures < 3)
 696                 return;
 697
 698         wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN");
 699         hapd->ap_pin_failures = 0;
 700         os_free(hapd->conf->ap_pin);
 701         hapd->conf->ap_pin = NULL;
 702 }
 703
 704 #endif /* CONFIG_WPS */
 705
 706
 707 #ifdef CONFIG_CTRL_IFACE
 708
 709 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
 710                             char *buf, size_t buflen)
 711 {
 712         if (wpa_s->ap_iface == NULL)
 713                 return -1;
 714         return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
 715                                             buf, buflen);
 716 }
 717
 718
 719 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
 720                       char *buf, size_t buflen)
 721 {
 722         if (wpa_s->ap_iface == NULL)
 723                 return -1;
 724         return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
 725                                       buf, buflen);
 726 }
 727
 728
 729 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
 730                            char *buf, size_t buflen)
 731 {
 732         if (wpa_s->ap_iface == NULL)
 733                 return -1;
 734         return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
 735                                            buf, buflen);
 736 }
 737
 738
 739 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
 740                                  size_t buflen, int verbose)
 741 {
 742         char *pos = buf, *end = buf + buflen;
 743         int ret;
 744         struct hostapd_bss_config *conf;
 745
 746         if (wpa_s->ap_iface == NULL)
 747                 return -1;
 748
 749         conf = wpa_s->ap_iface->bss[0]->conf;
 750         if (conf->wpa == 0)
 751                 return 0;
 752
 753         ret = os_snprintf(pos, end - pos,
 754                           "pairwise_cipher=%s\n"
 755                           "group_cipher=%s\n"
 756                           "key_mgmt=%s\n",
 757                           wpa_cipher_txt(conf->rsn_pairwise),
 758                           wpa_cipher_txt(conf->wpa_group),
 759                           wpa_key_mgmt_txt(conf->wpa_key_mgmt,
 760                                            conf->wpa));
 761         if (ret < 0 || ret >= end - pos)
 762                 return pos - buf;
 763         pos += ret;
 764         return pos - buf;
 765 }
 766
 767 #endif /* CONFIG_CTRL_IFACE */
 768
 769
 770 int wpa_supplicant_ap_update_beacon(struct wpa_supplicant *wpa_s)
 771 {
 772         struct hostapd_iface *iface = wpa_s->ap_iface;
 773         struct wpa_ssid *ssid = wpa_s->current_ssid;
 774         struct hostapd_data *hapd;
 775
 776         if (ssid == NULL || wpa_s->ap_iface == NULL)
 777                 return -1;
 778
 779 #ifdef CONFIG_P2P
 780         if (ssid->mode == WPAS_MODE_P2P_GO)
 781                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 782         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 783                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 784                         P2P_GROUP_FORMATION;
 785 #endif /* CONFIG_P2P */
 786
 787         ieee802_11_set_beacons(iface);
 788         hapd = iface->bss[0];
 789         hapd->drv.set_ap_wps_ie(hapd);
 790
 791         return 0;
 792 }
 793
 794
 795 int wpa_supplicant_ap_mac_addr_filter(struct wpa_supplicant *wpa_s,
 796                                       const u8 *addr)
 797 {
 798         struct hostapd_data *hapd;
 799         struct hostapd_bss_config *conf;
 800
 801         if (!wpa_s->ap_iface)
 802                 return -1;
 803
 804         if (addr)
 805                 wpa_printf(MSG_DEBUG, "AP: Set MAC address filter: " MACSTR,
 806                            MAC2STR(addr));
 807         else
 808                 wpa_printf(MSG_DEBUG, "AP: Clear MAC address filter");
 809
 810         hapd = wpa_s->ap_iface->bss[0];
 811         conf = hapd->conf;
 812
 813         os_free(conf->accept_mac);
 814         conf->accept_mac = NULL;
 815         conf->num_accept_mac = 0;
 816         os_free(conf->deny_mac);
 817         conf->deny_mac = NULL;
 818         conf->num_deny_mac = 0;
 819
 820         if (addr == NULL) {
 821                 conf->macaddr_acl = ACCEPT_UNLESS_DENIED;
 822                 return 0;
 823         }
 824
 825         conf->macaddr_acl = DENY_UNLESS_ACCEPTED;
 826         conf->accept_mac = os_zalloc(sizeof(struct mac_acl_entry));
 827         if (conf->accept_mac == NULL)
 828                 return -1;
 829         os_memcpy(conf->accept_mac[0].addr, addr, ETH_ALEN);
 830         conf->num_accept_mac = 1;
 831
 832         return 0;
 833 }