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) {
 231                 struct wps_event_fail *fail = &data->fail;
 232
 233                 if (wpa_s->parent && wpa_s->parent != wpa_s &&
 234                     wpa_s == wpa_s->global->p2p_group_formation) {
 235                         /*
 236                          * src/ap/wps_hostapd.c has already sent this on the
 237                          * main interface, so only send on the parent interface
 238                          * here if needed.
 239                          */
 240                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 241                                 "msg=%d config_error=%d",
 242                                 fail->msg, fail->config_error);
 243                 }
 244                 wpas_p2p_wps_failed(wpa_s, fail);
 245         }
 246 #endif /* CONFIG_P2P */
 247 }
 248
 249
 250 static void ap_sta_authorized_cb(void *ctx, const u8 *mac_addr,
 251                                  int authorized)
 252 {
 253         wpas_notify_sta_authorized(ctx, mac_addr, authorized);
 254 }
 255
 256
 257 static int ap_vendor_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 258 {
 259 #ifdef CONFIG_P2P
 260         struct wpa_supplicant *wpa_s = ctx;
 261         const struct ieee80211_mgmt *mgmt;
 262         size_t hdr_len;
 263
 264         mgmt = (const struct ieee80211_mgmt *) buf;
 265         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 266         if (hdr_len > len)
 267                 return -1;
 268         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 269                            mgmt->u.action.category,
 270                            &mgmt->u.action.u.vs_public_action.action,
 271                            len - hdr_len, freq);
 272 #endif /* CONFIG_P2P */
 273         return 0;
 274 }
 275
 276
 277 static int ap_probe_req_rx(void *ctx, const u8 *addr, const u8 *ie,
 278                            size_t ie_len)
 279 {
 280 #ifdef CONFIG_P2P
 281         struct wpa_supplicant *wpa_s = ctx;
 282         return wpas_p2p_probe_req_rx(wpa_s, addr, ie, ie_len);
 283 #else /* CONFIG_P2P */
 284         return 0;
 285 #endif /* CONFIG_P2P */
 286 }
 287
 288
 289 static void ap_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 290                                   const u8 *uuid_e)
 291 {
 292 #ifdef CONFIG_P2P
 293         struct wpa_supplicant *wpa_s = ctx;
 294         wpas_p2p_wps_success(wpa_s, mac_addr, 1);
 295 #endif /* CONFIG_P2P */
 296 }
 297
 298
 299 static void wpas_ap_configured_cb(void *ctx)
 300 {
 301         struct wpa_supplicant *wpa_s = ctx;
 302
 303         wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 304
 305         if (wpa_s->ap_configured_cb)
 306                 wpa_s->ap_configured_cb(wpa_s->ap_configured_cb_ctx,
 307                                         wpa_s->ap_configured_cb_data);
 308 }
 309
 310
 311 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
 312                              struct wpa_ssid *ssid)
 313 {
 314         struct wpa_driver_associate_params params;
 315         struct hostapd_iface *hapd_iface;
 316         struct hostapd_config *conf;
 317         size_t i;
 318
 319         if (ssid->ssid == NULL || ssid->ssid_len == 0) {
 320                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 321                 return -1;
 322         }
 323
 324         wpa_supplicant_ap_deinit(wpa_s);
 325
 326         wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
 327                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 328
 329         os_memset(&params, 0, sizeof(params));
 330         params.ssid = ssid->ssid;
 331         params.ssid_len = ssid->ssid_len;
 332         switch (ssid->mode) {
 333         case WPAS_MODE_INFRA:
 334                 params.mode = IEEE80211_MODE_INFRA;
 335                 break;
 336         case WPAS_MODE_IBSS:
 337                 params.mode = IEEE80211_MODE_IBSS;
 338                 break;
 339         case WPAS_MODE_AP:
 340         case WPAS_MODE_P2P_GO:
 341         case WPAS_MODE_P2P_GROUP_FORMATION:
 342                 params.mode = IEEE80211_MODE_AP;
 343                 break;
 344         }
 345         params.freq = ssid->frequency;
 346
 347         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK)
 348                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
 349         else
 350                 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
 351         params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
 352
 353         if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
 354                 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
 355         else if (ssid->pairwise_cipher & WPA_CIPHER_TKIP)
 356                 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
 357         else if (ssid->pairwise_cipher & WPA_CIPHER_NONE)
 358                 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 359         else {
 360                 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
 361                            "cipher.");
 362                 return -1;
 363         }
 364         params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
 365         params.group_suite = params.pairwise_suite;
 366
 367 #ifdef CONFIG_P2P
 368         if (ssid->mode == WPAS_MODE_P2P_GO ||
 369             ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 370                 params.p2p = 1;
 371         wpa_drv_set_intra_bss(wpa_s, wpa_s->conf->p2p_intra_bss);
 372 #endif /* CONFIG_P2P */
 373
 374         if (wpa_s->parent->set_ap_uapsd)
 375                 params.uapsd = wpa_s->parent->ap_uapsd;
 376         else
 377                 params.uapsd = -1;
 378
 379         if (wpa_drv_associate(wpa_s, &params) < 0) {
 380                 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
 381                 return -1;
 382         }
 383
 384         wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
 385         if (hapd_iface == NULL)
 386                 return -1;
 387         hapd_iface->owner = wpa_s;
 388
 389         wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
 390         if (conf == NULL) {
 391                 wpa_supplicant_ap_deinit(wpa_s);
 392                 return -1;
 393         }
 394
 395         if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
 396                 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
 397                 wpa_supplicant_ap_deinit(wpa_s);
 398                 return -1;
 399         }
 400
 401 #ifdef CONFIG_P2P
 402         if (ssid->mode == WPAS_MODE_P2P_GO)
 403                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 404         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 405                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 406                         P2P_GROUP_FORMATION;
 407 #endif /* CONFIG_P2P */
 408
 409         hapd_iface->num_bss = conf->num_bss;
 410         hapd_iface->bss = os_zalloc(conf->num_bss *
 411                                     sizeof(struct hostapd_data *));
 412         if (hapd_iface->bss == NULL) {
 413                 wpa_supplicant_ap_deinit(wpa_s);
 414                 return -1;
 415         }
 416
 417         for (i = 0; i < conf->num_bss; i++) {
 418                 hapd_iface->bss[i] =
 419                         hostapd_alloc_bss_data(hapd_iface, conf,
 420                                                &conf->bss[i]);
 421                 if (hapd_iface->bss[i] == NULL) {
 422                         wpa_supplicant_ap_deinit(wpa_s);
 423                         return -1;
 424                 }
 425
 426                 hapd_iface->bss[i]->msg_ctx = wpa_s;
 427                 hapd_iface->bss[i]->public_action_cb = ap_public_action_rx;
 428                 hapd_iface->bss[i]->public_action_cb_ctx = wpa_s;
 429                 hapd_iface->bss[i]->vendor_action_cb = ap_vendor_action_rx;
 430                 hapd_iface->bss[i]->vendor_action_cb_ctx = wpa_s;
 431                 hostapd_register_probereq_cb(hapd_iface->bss[i],
 432                                              ap_probe_req_rx, wpa_s);
 433                 hapd_iface->bss[i]->wps_reg_success_cb = ap_wps_reg_success_cb;
 434                 hapd_iface->bss[i]->wps_reg_success_cb_ctx = wpa_s;
 435                 hapd_iface->bss[i]->wps_event_cb = ap_wps_event_cb;
 436                 hapd_iface->bss[i]->wps_event_cb_ctx = wpa_s;
 437                 hapd_iface->bss[i]->sta_authorized_cb = ap_sta_authorized_cb;
 438                 hapd_iface->bss[i]->sta_authorized_cb_ctx = wpa_s;
 439 #ifdef CONFIG_P2P
 440                 hapd_iface->bss[i]->p2p = wpa_s->global->p2p;
 441                 hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(
 442                         wpa_s, ssid->p2p_persistent_group,
 443                         ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION);
 444 #endif /* CONFIG_P2P */
 445                 hapd_iface->bss[i]->setup_complete_cb = wpas_ap_configured_cb;
 446                 hapd_iface->bss[i]->setup_complete_cb_ctx = wpa_s;
 447         }
 448
 449         os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
 450         hapd_iface->bss[0]->driver = wpa_s->driver;
 451         hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
 452
 453         wpa_s->current_ssid = ssid;
 454         os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
 455         wpa_s->assoc_freq = ssid->frequency;
 456
 457         if (hostapd_setup_interface(wpa_s->ap_iface)) {
 458                 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
 459                 wpa_supplicant_ap_deinit(wpa_s);
 460                 return -1;
 461         }
 462
 463         return 0;
 464 }
 465
 466
 467 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
 468 {
 469 #ifdef CONFIG_WPS
 470         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 471 #endif /* CONFIG_WPS */
 472
 473         if (wpa_s->ap_iface == NULL)
 474                 return;
 475
 476         wpa_s->current_ssid = NULL;
 477         wpa_s->assoc_freq = 0;
 478 #ifdef CONFIG_P2P
 479         if (wpa_s->ap_iface->bss)
 480                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
 481         wpas_p2p_group_deinit(wpa_s);
 482 #endif /* CONFIG_P2P */
 483         hostapd_interface_deinit(wpa_s->ap_iface);
 484         hostapd_interface_free(wpa_s->ap_iface);
 485         wpa_s->ap_iface = NULL;
 486         wpa_drv_deinit_ap(wpa_s);
 487 }
 488
 489
 490 void ap_tx_status(void *ctx, const u8 *addr,
 491                   const u8 *buf, size_t len, int ack)
 492 {
 493 #ifdef NEED_AP_MLME
 494         struct wpa_supplicant *wpa_s = ctx;
 495         hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
 496 #endif /* NEED_AP_MLME */
 497 }
 498
 499
 500 void ap_rx_from_unknown_sta(void *ctx, const u8 *frame, size_t len)
 501 {
 502 #ifdef NEED_AP_MLME
 503         struct wpa_supplicant *wpa_s = ctx;
 504         const struct ieee80211_hdr *hdr =
 505                 (const struct ieee80211_hdr *) frame;
 506         u16 fc = le_to_host16(hdr->frame_control);
 507         ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], hdr->addr2,
 508                                    (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
 509                                    (WLAN_FC_TODS | WLAN_FC_FROMDS));
 510 #endif /* NEED_AP_MLME */
 511 }
 512
 513
 514 void ap_mgmt_rx(void *ctx, struct rx_mgmt *rx_mgmt)
 515 {
 516 #ifdef NEED_AP_MLME
 517         struct wpa_supplicant *wpa_s = ctx;
 518         struct hostapd_frame_info fi;
 519         os_memset(&fi, 0, sizeof(fi));
 520         fi.datarate = rx_mgmt->datarate;
 521         fi.ssi_signal = rx_mgmt->ssi_signal;
 522         ieee802_11_mgmt(wpa_s->ap_iface->bss[0], rx_mgmt->frame,
 523                         rx_mgmt->frame_len, &fi);
 524 #endif /* NEED_AP_MLME */
 525 }
 526
 527
 528 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
 529 {
 530 #ifdef NEED_AP_MLME
 531         struct wpa_supplicant *wpa_s = ctx;
 532         ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
 533 #endif /* NEED_AP_MLME */
 534 }
 535
 536
 537 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
 538                                 const u8 *src_addr, const u8 *buf, size_t len)
 539 {
 540         ieee802_1x_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
 541 }
 542
 543
 544 #ifdef CONFIG_WPS
 545
 546 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 547                               const u8 *p2p_dev_addr)
 548 {
 549         if (!wpa_s->ap_iface)
 550                 return -1;
 551         return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0],
 552                                          p2p_dev_addr);
 553 }
 554
 555
 556 static int wpa_supplicant_ap_wps_sta_cancel(struct hostapd_data *hapd,
 557                                             struct sta_info *sta, void *ctx)
 558 {
 559         if (sta && (sta->flags & WLAN_STA_WPS)) {
 560                 ap_sta_deauthenticate(hapd, sta,
 561                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 562                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 563                            __func__, MAC2STR(sta->addr));
 564                 return 1;
 565         }
 566
 567         return 0;
 568 }
 569
 570
 571 int wpa_supplicant_ap_wps_cancel(struct wpa_supplicant *wpa_s)
 572 {
 573         struct wps_registrar *reg;
 574         int reg_sel = 0, wps_sta = 0;
 575
 576         if (!wpa_s->ap_iface || !wpa_s->ap_iface->bss[0]->wps)
 577                 return -1;
 578
 579         reg = wpa_s->ap_iface->bss[0]->wps->registrar;
 580         reg_sel = wps_registrar_wps_cancel(reg);
 581         wps_sta = ap_for_each_sta(wpa_s->ap_iface->bss[0],
 582                                   wpa_supplicant_ap_wps_sta_cancel, NULL);
 583
 584         if (!reg_sel && !wps_sta) {
 585                 wpa_printf(MSG_DEBUG, "No WPS operation in progress at this "
 586                            "time");
 587                 return -1;
 588         }
 589
 590         /*
 591          * There are 2 cases to return wps cancel as success:
 592          * 1. When wps cancel was initiated but no connection has been
 593          *    established with client yet.
 594          * 2. Client is in the middle of exchanging WPS messages.
 595          */
 596
 597         return 0;
 598 }
 599
 600
 601 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 602                               const char *pin, char *buf, size_t buflen)
 603 {
 604         int ret, ret_len = 0;
 605
 606         if (!wpa_s->ap_iface)
 607                 return -1;
 608
 609         if (pin == NULL) {
 610                 unsigned int rpin = wps_generate_pin();
 611                 ret_len = os_snprintf(buf, buflen, "%d", rpin);
 612                 pin = buf;
 613         } else
 614                 ret_len = os_snprintf(buf, buflen, "%s", pin);
 615
 616         ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], bssid, "any", pin,
 617                                   0);
 618         if (ret)
 619                 return -1;
 620         return ret_len;
 621 }
 622
 623
 624 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
 625 {
 626         struct wpa_supplicant *wpa_s = eloop_data;
 627         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
 628         wpas_wps_ap_pin_disable(wpa_s);
 629 }
 630
 631
 632 static void wpas_wps_ap_pin_enable(struct wpa_supplicant *wpa_s, int timeout)
 633 {
 634         struct hostapd_data *hapd;
 635
 636         if (wpa_s->ap_iface == NULL)
 637                 return;
 638         hapd = wpa_s->ap_iface->bss[0];
 639         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
 640         hapd->ap_pin_failures = 0;
 641         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 642         if (timeout > 0)
 643                 eloop_register_timeout(timeout, 0,
 644                                        wpas_wps_ap_pin_timeout, wpa_s, NULL);
 645 }
 646
 647
 648 void wpas_wps_ap_pin_disable(struct wpa_supplicant *wpa_s)
 649 {
 650         struct hostapd_data *hapd;
 651
 652         if (wpa_s->ap_iface == NULL)
 653                 return;
 654         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
 655         hapd = wpa_s->ap_iface->bss[0];
 656         os_free(hapd->conf->ap_pin);
 657         hapd->conf->ap_pin = NULL;
 658         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 659 }
 660
 661
 662 const char * wpas_wps_ap_pin_random(struct wpa_supplicant *wpa_s, int timeout)
 663 {
 664         struct hostapd_data *hapd;
 665         unsigned int pin;
 666         char pin_txt[9];
 667
 668         if (wpa_s->ap_iface == NULL)
 669                 return NULL;
 670         hapd = wpa_s->ap_iface->bss[0];
 671         pin = wps_generate_pin();
 672         os_snprintf(pin_txt, sizeof(pin_txt), "%u", pin);
 673         os_free(hapd->conf->ap_pin);
 674         hapd->conf->ap_pin = os_strdup(pin_txt);
 675         if (hapd->conf->ap_pin == NULL)
 676                 return NULL;
 677         wpas_wps_ap_pin_enable(wpa_s, timeout);
 678
 679         return hapd->conf->ap_pin;
 680 }
 681
 682
 683 const char * wpas_wps_ap_pin_get(struct wpa_supplicant *wpa_s)
 684 {
 685         struct hostapd_data *hapd;
 686         if (wpa_s->ap_iface == NULL)
 687                 return NULL;
 688         hapd = wpa_s->ap_iface->bss[0];
 689         return hapd->conf->ap_pin;
 690 }
 691
 692
 693 int wpas_wps_ap_pin_set(struct wpa_supplicant *wpa_s, const char *pin,
 694                         int timeout)
 695 {
 696         struct hostapd_data *hapd;
 697         char pin_txt[9];
 698         int ret;
 699
 700         if (wpa_s->ap_iface == NULL)
 701                 return -1;
 702         hapd = wpa_s->ap_iface->bss[0];
 703         ret = os_snprintf(pin_txt, sizeof(pin_txt), "%s", pin);
 704         if (ret < 0 || ret >= (int) sizeof(pin_txt))
 705                 return -1;
 706         os_free(hapd->conf->ap_pin);
 707         hapd->conf->ap_pin = os_strdup(pin_txt);
 708         if (hapd->conf->ap_pin == NULL)
 709                 return -1;
 710         wpas_wps_ap_pin_enable(wpa_s, timeout);
 711
 712         return 0;
 713 }
 714
 715
 716 void wpa_supplicant_ap_pwd_auth_fail(struct wpa_supplicant *wpa_s)
 717 {
 718         struct hostapd_data *hapd;
 719
 720         if (wpa_s->ap_iface == NULL)
 721                 return;
 722         hapd = wpa_s->ap_iface->bss[0];
 723
 724         /*
 725          * Registrar failed to prove its knowledge of the AP PIN. Disable AP
 726          * PIN if this happens multiple times to slow down brute force attacks.
 727          */
 728         hapd->ap_pin_failures++;
 729         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u",
 730                    hapd->ap_pin_failures);
 731         if (hapd->ap_pin_failures < 3)
 732                 return;
 733
 734         wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN");
 735         hapd->ap_pin_failures = 0;
 736         os_free(hapd->conf->ap_pin);
 737         hapd->conf->ap_pin = NULL;
 738 }
 739
 740 #endif /* CONFIG_WPS */
 741
 742
 743 #ifdef CONFIG_CTRL_IFACE
 744
 745 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
 746                             char *buf, size_t buflen)
 747 {
 748         if (wpa_s->ap_iface == NULL)
 749                 return -1;
 750         return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
 751                                             buf, buflen);
 752 }
 753
 754
 755 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
 756                       char *buf, size_t buflen)
 757 {
 758         if (wpa_s->ap_iface == NULL)
 759                 return -1;
 760         return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
 761                                       buf, buflen);
 762 }
 763
 764
 765 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
 766                            char *buf, size_t buflen)
 767 {
 768         if (wpa_s->ap_iface == NULL)
 769                 return -1;
 770         return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
 771                                            buf, buflen);
 772 }
 773
 774
 775 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
 776                                  size_t buflen, int verbose)
 777 {
 778         char *pos = buf, *end = buf + buflen;
 779         int ret;
 780         struct hostapd_bss_config *conf;
 781
 782         if (wpa_s->ap_iface == NULL)
 783                 return -1;
 784
 785         conf = wpa_s->ap_iface->bss[0]->conf;
 786         if (conf->wpa == 0)
 787                 return 0;
 788
 789         ret = os_snprintf(pos, end - pos,
 790                           "pairwise_cipher=%s\n"
 791                           "group_cipher=%s\n"
 792                           "key_mgmt=%s\n",
 793                           wpa_cipher_txt(conf->rsn_pairwise),
 794                           wpa_cipher_txt(conf->wpa_group),
 795                           wpa_key_mgmt_txt(conf->wpa_key_mgmt,
 796                                            conf->wpa));
 797         if (ret < 0 || ret >= end - pos)
 798                 return pos - buf;
 799         pos += ret;
 800         return pos - buf;
 801 }
 802
 803 #endif /* CONFIG_CTRL_IFACE */
 804
 805
 806 int wpa_supplicant_ap_update_beacon(struct wpa_supplicant *wpa_s)
 807 {
 808         struct hostapd_iface *iface = wpa_s->ap_iface;
 809         struct wpa_ssid *ssid = wpa_s->current_ssid;
 810         struct hostapd_data *hapd;
 811
 812         if (ssid == NULL || wpa_s->ap_iface == NULL)
 813                 return -1;
 814
 815 #ifdef CONFIG_P2P
 816         if (ssid->mode == WPAS_MODE_P2P_GO)
 817                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 818         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 819                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 820                         P2P_GROUP_FORMATION;
 821 #endif /* CONFIG_P2P */
 822
 823         ieee802_11_set_beacons(iface);
 824         hapd = iface->bss[0];
 825         hostapd_set_ap_wps_ie(hapd);
 826
 827         return 0;
 828 }
 829
 830
 831 int wpa_supplicant_ap_mac_addr_filter(struct wpa_supplicant *wpa_s,
 832                                       const u8 *addr)
 833 {
 834         struct hostapd_data *hapd;
 835         struct hostapd_bss_config *conf;
 836
 837         if (!wpa_s->ap_iface)
 838                 return -1;
 839
 840         if (addr)
 841                 wpa_printf(MSG_DEBUG, "AP: Set MAC address filter: " MACSTR,
 842                            MAC2STR(addr));
 843         else
 844                 wpa_printf(MSG_DEBUG, "AP: Clear MAC address filter");
 845
 846         hapd = wpa_s->ap_iface->bss[0];
 847         conf = hapd->conf;
 848
 849         os_free(conf->accept_mac);
 850         conf->accept_mac = NULL;
 851         conf->num_accept_mac = 0;
 852         os_free(conf->deny_mac);
 853         conf->deny_mac = NULL;
 854         conf->num_deny_mac = 0;
 855
 856         if (addr == NULL) {
 857                 conf->macaddr_acl = ACCEPT_UNLESS_DENIED;
 858                 return 0;
 859         }
 860
 861         conf->macaddr_acl = DENY_UNLESS_ACCEPTED;
 862         conf->accept_mac = os_zalloc(sizeof(struct mac_acl_entry));
 863         if (conf->accept_mac == NULL)
 864                 return -1;
 865         os_memcpy(conf->accept_mac[0].addr, addr, ETH_ALEN);
 866         conf->num_accept_mac = 1;
 867
 868         return 0;
 869 }