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 "wps/wps.h"
  34 #include "common/ieee802_11_defs.h"
  35 #include "config_ssid.h"
  36 #include "config.h"
  37 #include "wpa_supplicant_i.h"
  38 #include "driver_i.h"
  39 #include "p2p_supplicant.h"
  40 #include "ap.h"
  41 #include "ap/sta_info.h"
  42 #include "notify.h"
  43
  44
  45 #ifdef CONFIG_WPS
  46 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
  47 #endif /* CONFIG_WPS */
  48
  49
  50 static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
  51                                   struct wpa_ssid *ssid,
  52                                   struct hostapd_config *conf)
  53 {
  54         struct hostapd_bss_config *bss = &conf->bss[0];
  55         int pairwise;
  56
  57         conf->driver = wpa_s->driver;
  58
  59         os_strlcpy(bss->iface, wpa_s->ifname, sizeof(bss->iface));
  60
  61         if (ssid->frequency == 0) {
  62                 /* default channel 11 */
  63                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
  64                 conf->channel = 11;
  65         } else if (ssid->frequency >= 2412 && ssid->frequency <= 2472) {
  66                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
  67                 conf->channel = (ssid->frequency - 2407) / 5;
  68         } else if ((ssid->frequency >= 5180 && ssid->frequency <= 5240) ||
  69                    (ssid->frequency >= 5745 && ssid->frequency <= 5825)) {
  70                 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
  71                 conf->channel = (ssid->frequency - 5000) / 5;
  72         } else {
  73                 wpa_printf(MSG_ERROR, "Unsupported AP mode frequency: %d MHz",
  74                            ssid->frequency);
  75                 return -1;
  76         }
  77
  78         /* TODO: enable HT40 if driver supports it;
  79          * drop to 11b if driver does not support 11g */
  80
  81 #ifdef CONFIG_IEEE80211N
  82         /*
  83          * Enable HT20 if the driver supports it, by setting conf->ieee80211n.
  84          * Using default config settings for: conf->ht_op_mode_fixed,
  85          * conf->ht_capab, conf->secondary_channel, conf->require_ht
  86          */
  87         if (wpa_s->hw.modes) {
  88                 struct hostapd_hw_modes *mode = NULL;
  89                 int i;
  90                 for (i = 0; i < wpa_s->hw.num_modes; i++) {
  91                         if (wpa_s->hw.modes[i].mode == conf->hw_mode) {
  92                                 mode = &wpa_s->hw.modes[i];
  93                                 break;
  94                         }
  95                 }
  96                 if (mode && mode->ht_capab)
  97                         conf->ieee80211n = 1;
  98         }
  99 #endif /* CONFIG_IEEE80211N */
 100
 101 #ifdef CONFIG_P2P
 102         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
 103                 /* Remove 802.11b rates from supported and basic rate sets */
 104                 int *list = os_malloc(4 * sizeof(int));
 105                 if (list) {
 106                         list[0] = 60;
 107                         list[1] = 120;
 108                         list[2] = 240;
 109                         list[3] = -1;
 110                 }
 111                 conf->basic_rates = list;
 112
 113                 list = os_malloc(9 * sizeof(int));
 114                 if (list) {
 115                         list[0] = 60;
 116                         list[1] = 90;
 117                         list[2] = 120;
 118                         list[3] = 180;
 119                         list[4] = 240;
 120                         list[5] = 360;
 121                         list[6] = 480;
 122                         list[7] = 540;
 123                         list[8] = -1;
 124                 }
 125                 conf->supported_rates = list;
 126         }
 127
 128         bss->isolate = !wpa_s->conf->p2p_intra_bss;
 129 #endif /* CONFIG_P2P */
 130
 131         if (ssid->ssid_len == 0) {
 132                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 133                 return -1;
 134         }
 135         os_memcpy(bss->ssid.ssid, ssid->ssid, ssid->ssid_len);
 136         bss->ssid.ssid[ssid->ssid_len] = '\0';
 137         bss->ssid.ssid_len = ssid->ssid_len;
 138         bss->ssid.ssid_set = 1;
 139
 140         if (ssid->auth_alg)
 141                 bss->auth_algs = ssid->auth_alg;
 142
 143         if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt))
 144                 bss->wpa = ssid->proto;
 145         bss->wpa_key_mgmt = ssid->key_mgmt;
 146         bss->wpa_pairwise = ssid->pairwise_cipher;
 147         if (ssid->passphrase) {
 148                 bss->ssid.wpa_passphrase = os_strdup(ssid->passphrase);
 149         } else if (ssid->psk_set) {
 150                 os_free(bss->ssid.wpa_psk);
 151                 bss->ssid.wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
 152                 if (bss->ssid.wpa_psk == NULL)
 153                         return -1;
 154                 os_memcpy(bss->ssid.wpa_psk->psk, ssid->psk, PMK_LEN);
 155                 bss->ssid.wpa_psk->group = 1;
 156         } else if (ssid->wep_key_len[0] || ssid->wep_key_len[1] ||
 157                    ssid->wep_key_len[2] || ssid->wep_key_len[3]) {
 158                 struct hostapd_wep_keys *wep = &bss->ssid.wep;
 159                 int i;
 160                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 161                         if (ssid->wep_key_len[i] == 0)
 162                                 continue;
 163                         wep->key[i] = os_malloc(ssid->wep_key_len[i]);
 164                         if (wep->key[i] == NULL)
 165                                 return -1;
 166                         os_memcpy(wep->key[i], ssid->wep_key[i],
 167                                   ssid->wep_key_len[i]);
 168                         wep->len[i] = ssid->wep_key_len[i];
 169                 }
 170                 wep->idx = ssid->wep_tx_keyidx;
 171                 wep->keys_set = 1;
 172         }
 173
 174         /* Select group cipher based on the enabled pairwise cipher suites */
 175         pairwise = 0;
 176         if (bss->wpa & 1)
 177                 pairwise |= bss->wpa_pairwise;
 178         if (bss->wpa & 2) {
 179                 if (bss->rsn_pairwise == 0)
 180                         bss->rsn_pairwise = bss->wpa_pairwise;
 181                 pairwise |= bss->rsn_pairwise;
 182         }
 183         if (pairwise & WPA_CIPHER_TKIP)
 184                 bss->wpa_group = WPA_CIPHER_TKIP;
 185         else
 186                 bss->wpa_group = WPA_CIPHER_CCMP;
 187
 188         if (bss->wpa && bss->ieee802_1x)
 189                 bss->ssid.security_policy = SECURITY_WPA;
 190         else if (bss->wpa)
 191                 bss->ssid.security_policy = SECURITY_WPA_PSK;
 192         else if (bss->ieee802_1x) {
 193                 int cipher = WPA_CIPHER_NONE;
 194                 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
 195                 bss->ssid.wep.default_len = bss->default_wep_key_len;
 196                 if (bss->default_wep_key_len)
 197                         cipher = bss->default_wep_key_len >= 13 ?
 198                                 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
 199                 bss->wpa_group = cipher;
 200                 bss->wpa_pairwise = cipher;
 201                 bss->rsn_pairwise = cipher;
 202         } else if (bss->ssid.wep.keys_set) {
 203                 int cipher = WPA_CIPHER_WEP40;
 204                 if (bss->ssid.wep.len[0] >= 13)
 205                         cipher = WPA_CIPHER_WEP104;
 206                 bss->ssid.security_policy = SECURITY_STATIC_WEP;
 207                 bss->wpa_group = cipher;
 208                 bss->wpa_pairwise = cipher;
 209                 bss->rsn_pairwise = cipher;
 210         } else {
 211                 bss->ssid.security_policy = SECURITY_PLAINTEXT;
 212                 bss->wpa_group = WPA_CIPHER_NONE;
 213                 bss->wpa_pairwise = WPA_CIPHER_NONE;
 214                 bss->rsn_pairwise = WPA_CIPHER_NONE;
 215         }
 216
 217 #ifdef CONFIG_WPS
 218         /*
 219          * Enable WPS by default for open and WPA/WPA2-Personal network, but
 220          * require user interaction to actually use it. Only the internal
 221          * Registrar is supported.
 222          */
 223         if (bss->ssid.security_policy != SECURITY_WPA_PSK &&
 224             bss->ssid.security_policy != SECURITY_PLAINTEXT)
 225                 goto no_wps;
 226         bss->eap_server = 1;
 227         bss->wps_state = 2;
 228         bss->ap_setup_locked = 2;
 229         if (wpa_s->conf->config_methods)
 230                 bss->config_methods = os_strdup(wpa_s->conf->config_methods);
 231         os_memcpy(bss->device_type, wpa_s->conf->device_type,
 232                   WPS_DEV_TYPE_LEN);
 233         if (wpa_s->conf->device_name) {
 234                 bss->device_name = os_strdup(wpa_s->conf->device_name);
 235                 bss->friendly_name = os_strdup(wpa_s->conf->device_name);
 236         }
 237         if (wpa_s->conf->manufacturer)
 238                 bss->manufacturer = os_strdup(wpa_s->conf->manufacturer);
 239         if (wpa_s->conf->model_name)
 240                 bss->model_name = os_strdup(wpa_s->conf->model_name);
 241         if (wpa_s->conf->model_number)
 242                 bss->model_number = os_strdup(wpa_s->conf->model_number);
 243         if (wpa_s->conf->serial_number)
 244                 bss->serial_number = os_strdup(wpa_s->conf->serial_number);
 245         if (is_nil_uuid(wpa_s->conf->uuid))
 246                 os_memcpy(bss->uuid, wpa_s->wps->uuid, WPS_UUID_LEN);
 247         else
 248                 os_memcpy(bss->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
 249         os_memcpy(bss->os_version, wpa_s->conf->os_version, 4);
 250 no_wps:
 251 #endif /* CONFIG_WPS */
 252
 253         if (wpa_s->max_stations &&
 254             wpa_s->max_stations < wpa_s->conf->max_num_sta)
 255                 bss->max_num_sta = wpa_s->max_stations;
 256         else
 257                 bss->max_num_sta = wpa_s->conf->max_num_sta;
 258
 259         bss->disassoc_low_ack = wpa_s->conf->disassoc_low_ack;
 260
 261         return 0;
 262 }
 263
 264
 265 static void ap_public_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 266 {
 267 #ifdef CONFIG_P2P
 268         struct wpa_supplicant *wpa_s = ctx;
 269         const struct ieee80211_mgmt *mgmt;
 270         size_t hdr_len;
 271
 272         mgmt = (const struct ieee80211_mgmt *) buf;
 273         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 274         if (hdr_len > len)
 275                 return;
 276         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 277                            mgmt->u.action.category,
 278                            &mgmt->u.action.u.vs_public_action.action,
 279                            len - hdr_len, freq);
 280 #endif /* CONFIG_P2P */
 281 }
 282
 283
 284 static void ap_wps_event_cb(void *ctx, enum wps_event event,
 285                             union wps_event_data *data)
 286 {
 287 #ifdef CONFIG_P2P
 288         struct wpa_supplicant *wpa_s = ctx;
 289
 290         if (event == WPS_EV_FAIL) {
 291                 struct wps_event_fail *fail = &data->fail;
 292
 293                 if (wpa_s->parent && wpa_s->parent != wpa_s &&
 294                     wpa_s == wpa_s->global->p2p_group_formation) {
 295                         /*
 296                          * src/ap/wps_hostapd.c has already sent this on the
 297                          * main interface, so only send on the parent interface
 298                          * here if needed.
 299                          */
 300                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 301                                 "msg=%d config_error=%d",
 302                                 fail->msg, fail->config_error);
 303                 }
 304                 wpas_p2p_wps_failed(wpa_s, fail);
 305         }
 306 #endif /* CONFIG_P2P */
 307 }
 308
 309
 310 static void ap_sta_authorized_cb(void *ctx, const u8 *mac_addr,
 311                                  int authorized)
 312 {
 313         wpas_notify_sta_authorized(ctx, mac_addr, authorized);
 314 }
 315
 316
 317 static int ap_vendor_action_rx(void *ctx, const u8 *buf, size_t len, int freq)
 318 {
 319 #ifdef CONFIG_P2P
 320         struct wpa_supplicant *wpa_s = ctx;
 321         const struct ieee80211_mgmt *mgmt;
 322         size_t hdr_len;
 323
 324         mgmt = (const struct ieee80211_mgmt *) buf;
 325         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 326         if (hdr_len > len)
 327                 return -1;
 328         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 329                            mgmt->u.action.category,
 330                            &mgmt->u.action.u.vs_public_action.action,
 331                            len - hdr_len, freq);
 332 #endif /* CONFIG_P2P */
 333         return 0;
 334 }
 335
 336
 337 static int ap_probe_req_rx(void *ctx, const u8 *sa, const u8 *da,
 338                            const u8 *bssid, const u8 *ie, size_t ie_len)
 339 {
 340 #ifdef CONFIG_P2P
 341         struct wpa_supplicant *wpa_s = ctx;
 342         return wpas_p2p_probe_req_rx(wpa_s, sa, da, bssid, ie, ie_len);
 343 #else /* CONFIG_P2P */
 344         return 0;
 345 #endif /* CONFIG_P2P */
 346 }
 347
 348
 349 static void ap_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 350                                   const u8 *uuid_e)
 351 {
 352 #ifdef CONFIG_P2P
 353         struct wpa_supplicant *wpa_s = ctx;
 354         wpas_p2p_wps_success(wpa_s, mac_addr, 1);
 355 #endif /* CONFIG_P2P */
 356 }
 357
 358
 359 static void wpas_ap_configured_cb(void *ctx)
 360 {
 361         struct wpa_supplicant *wpa_s = ctx;
 362
 363         wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 364
 365         if (wpa_s->ap_configured_cb)
 366                 wpa_s->ap_configured_cb(wpa_s->ap_configured_cb_ctx,
 367                                         wpa_s->ap_configured_cb_data);
 368 }
 369
 370
 371 int wpa_supplicant_create_ap(struct wpa_supplicant *wpa_s,
 372                              struct wpa_ssid *ssid)
 373 {
 374         struct wpa_driver_associate_params params;
 375         struct hostapd_iface *hapd_iface;
 376         struct hostapd_config *conf;
 377         size_t i;
 378
 379         if (ssid->ssid == NULL || ssid->ssid_len == 0) {
 380                 wpa_printf(MSG_ERROR, "No SSID configured for AP mode");
 381                 return -1;
 382         }
 383
 384         wpa_supplicant_ap_deinit(wpa_s);
 385
 386         wpa_printf(MSG_DEBUG, "Setting up AP (SSID='%s')",
 387                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 388
 389         os_memset(&params, 0, sizeof(params));
 390         params.ssid = ssid->ssid;
 391         params.ssid_len = ssid->ssid_len;
 392         switch (ssid->mode) {
 393         case WPAS_MODE_INFRA:
 394                 params.mode = IEEE80211_MODE_INFRA;
 395                 break;
 396         case WPAS_MODE_IBSS:
 397                 params.mode = IEEE80211_MODE_IBSS;
 398                 break;
 399         case WPAS_MODE_AP:
 400         case WPAS_MODE_P2P_GO:
 401         case WPAS_MODE_P2P_GROUP_FORMATION:
 402                 params.mode = IEEE80211_MODE_AP;
 403                 break;
 404         }
 405         params.freq = ssid->frequency;
 406
 407         params.wpa_proto = ssid->proto;
 408         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK)
 409                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
 410         else
 411                 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
 412         params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
 413
 414         if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
 415                 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
 416         else if (ssid->pairwise_cipher & WPA_CIPHER_TKIP)
 417                 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
 418         else if (ssid->pairwise_cipher & WPA_CIPHER_NONE)
 419                 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 420         else {
 421                 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
 422                            "cipher.");
 423                 return -1;
 424         }
 425         params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
 426         params.group_suite = params.pairwise_suite;
 427
 428 #ifdef CONFIG_P2P
 429         if (ssid->mode == WPAS_MODE_P2P_GO ||
 430             ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 431                 params.p2p = 1;
 432 #endif /* CONFIG_P2P */
 433
 434         if (wpa_s->parent->set_ap_uapsd)
 435                 params.uapsd = wpa_s->parent->ap_uapsd;
 436         else
 437                 params.uapsd = -1;
 438
 439         if (wpa_drv_associate(wpa_s, &params) < 0) {
 440                 wpa_msg(wpa_s, MSG_INFO, "Failed to start AP functionality");
 441                 return -1;
 442         }
 443
 444         wpa_s->ap_iface = hapd_iface = os_zalloc(sizeof(*wpa_s->ap_iface));
 445         if (hapd_iface == NULL)
 446                 return -1;
 447         hapd_iface->owner = wpa_s;
 448         hapd_iface->drv_flags = wpa_s->drv_flags;
 449
 450         wpa_s->ap_iface->conf = conf = hostapd_config_defaults();
 451         if (conf == NULL) {
 452                 wpa_supplicant_ap_deinit(wpa_s);
 453                 return -1;
 454         }
 455
 456         if (params.uapsd > 0) {
 457                 conf->bss->wmm_enabled = 1;
 458                 conf->bss->wmm_uapsd = 1;
 459         }
 460
 461         if (wpa_supplicant_conf_ap(wpa_s, ssid, conf)) {
 462                 wpa_printf(MSG_ERROR, "Failed to create AP configuration");
 463                 wpa_supplicant_ap_deinit(wpa_s);
 464                 return -1;
 465         }
 466
 467 #ifdef CONFIG_P2P
 468         if (ssid->mode == WPAS_MODE_P2P_GO)
 469                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 470         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 471                 conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 472                         P2P_GROUP_FORMATION;
 473 #endif /* CONFIG_P2P */
 474
 475         hapd_iface->num_bss = conf->num_bss;
 476         hapd_iface->bss = os_zalloc(conf->num_bss *
 477                                     sizeof(struct hostapd_data *));
 478         if (hapd_iface->bss == NULL) {
 479                 wpa_supplicant_ap_deinit(wpa_s);
 480                 return -1;
 481         }
 482
 483         for (i = 0; i < conf->num_bss; i++) {
 484                 hapd_iface->bss[i] =
 485                         hostapd_alloc_bss_data(hapd_iface, conf,
 486                                                &conf->bss[i]);
 487                 if (hapd_iface->bss[i] == NULL) {
 488                         wpa_supplicant_ap_deinit(wpa_s);
 489                         return -1;
 490                 }
 491
 492                 hapd_iface->bss[i]->msg_ctx = wpa_s;
 493                 hapd_iface->bss[i]->public_action_cb = ap_public_action_rx;
 494                 hapd_iface->bss[i]->public_action_cb_ctx = wpa_s;
 495                 hapd_iface->bss[i]->vendor_action_cb = ap_vendor_action_rx;
 496                 hapd_iface->bss[i]->vendor_action_cb_ctx = wpa_s;
 497                 hostapd_register_probereq_cb(hapd_iface->bss[i],
 498                                              ap_probe_req_rx, wpa_s);
 499                 hapd_iface->bss[i]->wps_reg_success_cb = ap_wps_reg_success_cb;
 500                 hapd_iface->bss[i]->wps_reg_success_cb_ctx = wpa_s;
 501                 hapd_iface->bss[i]->wps_event_cb = ap_wps_event_cb;
 502                 hapd_iface->bss[i]->wps_event_cb_ctx = wpa_s;
 503                 hapd_iface->bss[i]->sta_authorized_cb = ap_sta_authorized_cb;
 504                 hapd_iface->bss[i]->sta_authorized_cb_ctx = wpa_s;
 505 #ifdef CONFIG_P2P
 506                 hapd_iface->bss[i]->p2p = wpa_s->global->p2p;
 507                 hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(
 508                         wpa_s, ssid->p2p_persistent_group,
 509                         ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION);
 510 #endif /* CONFIG_P2P */
 511                 hapd_iface->bss[i]->setup_complete_cb = wpas_ap_configured_cb;
 512                 hapd_iface->bss[i]->setup_complete_cb_ctx = wpa_s;
 513         }
 514
 515         os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
 516         hapd_iface->bss[0]->driver = wpa_s->driver;
 517         hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
 518
 519         wpa_s->current_ssid = ssid;
 520         os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
 521         wpa_s->assoc_freq = ssid->frequency;
 522
 523         if (hostapd_setup_interface(wpa_s->ap_iface)) {
 524                 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
 525                 wpa_supplicant_ap_deinit(wpa_s);
 526                 return -1;
 527         }
 528
 529         return 0;
 530 }
 531
 532
 533 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
 534 {
 535 #ifdef CONFIG_WPS
 536         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 537 #endif /* CONFIG_WPS */
 538
 539         if (wpa_s->ap_iface == NULL)
 540                 return;
 541
 542         wpa_s->current_ssid = NULL;
 543         wpa_s->assoc_freq = 0;
 544         wpa_s->reassociated_connection = 0;
 545 #ifdef CONFIG_P2P
 546         if (wpa_s->ap_iface->bss)
 547                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
 548         wpas_p2p_group_deinit(wpa_s);
 549 #endif /* CONFIG_P2P */
 550         hostapd_interface_deinit(wpa_s->ap_iface);
 551         hostapd_interface_free(wpa_s->ap_iface);
 552         wpa_s->ap_iface = NULL;
 553         wpa_drv_deinit_ap(wpa_s);
 554 }
 555
 556
 557 void ap_tx_status(void *ctx, const u8 *addr,
 558                   const u8 *buf, size_t len, int ack)
 559 {
 560 #ifdef NEED_AP_MLME
 561         struct wpa_supplicant *wpa_s = ctx;
 562         hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
 563 #endif /* NEED_AP_MLME */
 564 }
 565
 566
 567 void ap_eapol_tx_status(void *ctx, const u8 *dst,
 568                         const u8 *data, size_t len, int ack)
 569 {
 570 #ifdef NEED_AP_MLME
 571         struct wpa_supplicant *wpa_s = ctx;
 572         hostapd_tx_status(wpa_s->ap_iface->bss[0], dst, data, len, ack);
 573 #endif /* NEED_AP_MLME */
 574 }
 575
 576
 577 void ap_client_poll_ok(void *ctx, const u8 *addr)
 578 {
 579 #ifdef NEED_AP_MLME
 580         struct wpa_supplicant *wpa_s = ctx;
 581         if (wpa_s->ap_iface)
 582                 hostapd_client_poll_ok(wpa_s->ap_iface->bss[0], addr);
 583 #endif /* NEED_AP_MLME */
 584 }
 585
 586
 587 void ap_rx_from_unknown_sta(void *ctx, const u8 *addr, int wds)
 588 {
 589 #ifdef NEED_AP_MLME
 590         struct wpa_supplicant *wpa_s = ctx;
 591         ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], addr, wds);
 592 #endif /* NEED_AP_MLME */
 593 }
 594
 595
 596 void ap_mgmt_rx(void *ctx, struct rx_mgmt *rx_mgmt)
 597 {
 598 #ifdef NEED_AP_MLME
 599         struct wpa_supplicant *wpa_s = ctx;
 600         struct hostapd_frame_info fi;
 601         os_memset(&fi, 0, sizeof(fi));
 602         fi.datarate = rx_mgmt->datarate;
 603         fi.ssi_signal = rx_mgmt->ssi_signal;
 604         ieee802_11_mgmt(wpa_s->ap_iface->bss[0], rx_mgmt->frame,
 605                         rx_mgmt->frame_len, &fi);
 606 #endif /* NEED_AP_MLME */
 607 }
 608
 609
 610 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
 611 {
 612 #ifdef NEED_AP_MLME
 613         struct wpa_supplicant *wpa_s = ctx;
 614         ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
 615 #endif /* NEED_AP_MLME */
 616 }
 617
 618
 619 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
 620                                 const u8 *src_addr, const u8 *buf, size_t len)
 621 {
 622         ieee802_1x_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
 623 }
 624
 625
 626 #ifdef CONFIG_WPS
 627
 628 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 629                               const u8 *p2p_dev_addr)
 630 {
 631         if (!wpa_s->ap_iface)
 632                 return -1;
 633         return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0],
 634                                          p2p_dev_addr);
 635 }
 636
 637
 638 static int wpa_supplicant_ap_wps_sta_cancel(struct hostapd_data *hapd,
 639                                             struct sta_info *sta, void *ctx)
 640 {
 641         if (sta && (sta->flags & WLAN_STA_WPS)) {
 642                 ap_sta_deauthenticate(hapd, sta,
 643                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 644                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 645                            __func__, MAC2STR(sta->addr));
 646                 return 1;
 647         }
 648
 649         return 0;
 650 }
 651
 652
 653 int wpa_supplicant_ap_wps_cancel(struct wpa_supplicant *wpa_s)
 654 {
 655         struct wps_registrar *reg;
 656         int reg_sel = 0, wps_sta = 0;
 657
 658         if (!wpa_s->ap_iface || !wpa_s->ap_iface->bss[0]->wps)
 659                 return -1;
 660
 661         reg = wpa_s->ap_iface->bss[0]->wps->registrar;
 662         reg_sel = wps_registrar_wps_cancel(reg);
 663         wps_sta = ap_for_each_sta(wpa_s->ap_iface->bss[0],
 664                                   wpa_supplicant_ap_wps_sta_cancel, NULL);
 665
 666         if (!reg_sel && !wps_sta) {
 667                 wpa_printf(MSG_DEBUG, "No WPS operation in progress at this "
 668                            "time");
 669                 return -1;
 670         }
 671
 672         /*
 673          * There are 2 cases to return wps cancel as success:
 674          * 1. When wps cancel was initiated but no connection has been
 675          *    established with client yet.
 676          * 2. Client is in the middle of exchanging WPS messages.
 677          */
 678
 679         return 0;
 680 }
 681
 682
 683 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 684                               const char *pin, char *buf, size_t buflen)
 685 {
 686         int ret, ret_len = 0;
 687
 688         if (!wpa_s->ap_iface)
 689                 return -1;
 690
 691         if (pin == NULL) {
 692                 unsigned int rpin = wps_generate_pin();
 693                 ret_len = os_snprintf(buf, buflen, "%d", rpin);
 694                 pin = buf;
 695         } else
 696                 ret_len = os_snprintf(buf, buflen, "%s", pin);
 697
 698         ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], bssid, "any", pin,
 699                                   0);
 700         if (ret)
 701                 return -1;
 702         return ret_len;
 703 }
 704
 705
 706 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
 707 {
 708         struct wpa_supplicant *wpa_s = eloop_data;
 709         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
 710         wpas_wps_ap_pin_disable(wpa_s);
 711 }
 712
 713
 714 static void wpas_wps_ap_pin_enable(struct wpa_supplicant *wpa_s, int timeout)
 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         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
 722         hapd->ap_pin_failures = 0;
 723         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 724         if (timeout > 0)
 725                 eloop_register_timeout(timeout, 0,
 726                                        wpas_wps_ap_pin_timeout, wpa_s, NULL);
 727 }
 728
 729
 730 void wpas_wps_ap_pin_disable(struct wpa_supplicant *wpa_s)
 731 {
 732         struct hostapd_data *hapd;
 733
 734         if (wpa_s->ap_iface == NULL)
 735                 return;
 736         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
 737         hapd = wpa_s->ap_iface->bss[0];
 738         os_free(hapd->conf->ap_pin);
 739         hapd->conf->ap_pin = NULL;
 740         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 741 }
 742
 743
 744 const char * wpas_wps_ap_pin_random(struct wpa_supplicant *wpa_s, int timeout)
 745 {
 746         struct hostapd_data *hapd;
 747         unsigned int pin;
 748         char pin_txt[9];
 749
 750         if (wpa_s->ap_iface == NULL)
 751                 return NULL;
 752         hapd = wpa_s->ap_iface->bss[0];
 753         pin = wps_generate_pin();
 754         os_snprintf(pin_txt, sizeof(pin_txt), "%u", pin);
 755         os_free(hapd->conf->ap_pin);
 756         hapd->conf->ap_pin = os_strdup(pin_txt);
 757         if (hapd->conf->ap_pin == NULL)
 758                 return NULL;
 759         wpas_wps_ap_pin_enable(wpa_s, timeout);
 760
 761         return hapd->conf->ap_pin;
 762 }
 763
 764
 765 const char * wpas_wps_ap_pin_get(struct wpa_supplicant *wpa_s)
 766 {
 767         struct hostapd_data *hapd;
 768         if (wpa_s->ap_iface == NULL)
 769                 return NULL;
 770         hapd = wpa_s->ap_iface->bss[0];
 771         return hapd->conf->ap_pin;
 772 }
 773
 774
 775 int wpas_wps_ap_pin_set(struct wpa_supplicant *wpa_s, const char *pin,
 776                         int timeout)
 777 {
 778         struct hostapd_data *hapd;
 779         char pin_txt[9];
 780         int ret;
 781
 782         if (wpa_s->ap_iface == NULL)
 783                 return -1;
 784         hapd = wpa_s->ap_iface->bss[0];
 785         ret = os_snprintf(pin_txt, sizeof(pin_txt), "%s", pin);
 786         if (ret < 0 || ret >= (int) sizeof(pin_txt))
 787                 return -1;
 788         os_free(hapd->conf->ap_pin);
 789         hapd->conf->ap_pin = os_strdup(pin_txt);
 790         if (hapd->conf->ap_pin == NULL)
 791                 return -1;
 792         wpas_wps_ap_pin_enable(wpa_s, timeout);
 793
 794         return 0;
 795 }
 796
 797
 798 void wpa_supplicant_ap_pwd_auth_fail(struct wpa_supplicant *wpa_s)
 799 {
 800         struct hostapd_data *hapd;
 801
 802         if (wpa_s->ap_iface == NULL)
 803                 return;
 804         hapd = wpa_s->ap_iface->bss[0];
 805
 806         /*
 807          * Registrar failed to prove its knowledge of the AP PIN. Disable AP
 808          * PIN if this happens multiple times to slow down brute force attacks.
 809          */
 810         hapd->ap_pin_failures++;
 811         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u",
 812                    hapd->ap_pin_failures);
 813         if (hapd->ap_pin_failures < 3)
 814                 return;
 815
 816         wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN");
 817         hapd->ap_pin_failures = 0;
 818         os_free(hapd->conf->ap_pin);
 819         hapd->conf->ap_pin = NULL;
 820 }
 821
 822 #endif /* CONFIG_WPS */
 823
 824
 825 #ifdef CONFIG_CTRL_IFACE
 826
 827 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
 828                             char *buf, size_t buflen)
 829 {
 830         if (wpa_s->ap_iface == NULL)
 831                 return -1;
 832         return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
 833                                             buf, buflen);
 834 }
 835
 836
 837 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
 838                       char *buf, size_t buflen)
 839 {
 840         if (wpa_s->ap_iface == NULL)
 841                 return -1;
 842         return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
 843                                       buf, buflen);
 844 }
 845
 846
 847 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
 848                            char *buf, size_t buflen)
 849 {
 850         if (wpa_s->ap_iface == NULL)
 851                 return -1;
 852         return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
 853                                            buf, buflen);
 854 }
 855
 856
 857 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
 858                                  size_t buflen, int verbose)
 859 {
 860         char *pos = buf, *end = buf + buflen;
 861         int ret;
 862         struct hostapd_bss_config *conf;
 863
 864         if (wpa_s->ap_iface == NULL)
 865                 return -1;
 866
 867         conf = wpa_s->ap_iface->bss[0]->conf;
 868         if (conf->wpa == 0)
 869                 return 0;
 870
 871         ret = os_snprintf(pos, end - pos,
 872                           "pairwise_cipher=%s\n"
 873                           "group_cipher=%s\n"
 874                           "key_mgmt=%s\n",
 875                           wpa_cipher_txt(conf->rsn_pairwise),
 876                           wpa_cipher_txt(conf->wpa_group),
 877                           wpa_key_mgmt_txt(conf->wpa_key_mgmt,
 878                                            conf->wpa));
 879         if (ret < 0 || ret >= end - pos)
 880                 return pos - buf;
 881         pos += ret;
 882         return pos - buf;
 883 }
 884
 885 #endif /* CONFIG_CTRL_IFACE */
 886
 887
 888 int wpa_supplicant_ap_update_beacon(struct wpa_supplicant *wpa_s)
 889 {
 890         struct hostapd_iface *iface = wpa_s->ap_iface;
 891         struct wpa_ssid *ssid = wpa_s->current_ssid;
 892         struct hostapd_data *hapd;
 893
 894         if (ssid == NULL || wpa_s->ap_iface == NULL)
 895                 return -1;
 896
 897 #ifdef CONFIG_P2P
 898         if (ssid->mode == WPAS_MODE_P2P_GO)
 899                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 900         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 901                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 902                         P2P_GROUP_FORMATION;
 903 #endif /* CONFIG_P2P */
 904
 905         ieee802_11_set_beacons(iface);
 906         hapd = iface->bss[0];
 907         hostapd_set_ap_wps_ie(hapd);
 908
 909         return 0;
 910 }
 911
 912
 913 int wpa_supplicant_ap_mac_addr_filter(struct wpa_supplicant *wpa_s,
 914                                       const u8 *addr)
 915 {
 916         struct hostapd_data *hapd;
 917         struct hostapd_bss_config *conf;
 918
 919         if (!wpa_s->ap_iface)
 920                 return -1;
 921
 922         if (addr)
 923                 wpa_printf(MSG_DEBUG, "AP: Set MAC address filter: " MACSTR,
 924                            MAC2STR(addr));
 925         else
 926                 wpa_printf(MSG_DEBUG, "AP: Clear MAC address filter");
 927
 928         hapd = wpa_s->ap_iface->bss[0];
 929         conf = hapd->conf;
 930
 931         os_free(conf->accept_mac);
 932         conf->accept_mac = NULL;
 933         conf->num_accept_mac = 0;
 934         os_free(conf->deny_mac);
 935         conf->deny_mac = NULL;
 936         conf->num_deny_mac = 0;
 937
 938         if (addr == NULL) {
 939                 conf->macaddr_acl = ACCEPT_UNLESS_DENIED;
 940                 return 0;
 941         }
 942
 943         conf->macaddr_acl = DENY_UNLESS_ACCEPTED;
 944         conf->accept_mac = os_zalloc(sizeof(struct mac_acl_entry));
 945         if (conf->accept_mac == NULL)
 946                 return -1;
 947         os_memcpy(conf->accept_mac[0].addr, addr, ETH_ALEN);
 948         conf->num_accept_mac = 1;
 949
 950         return 0;
 951 }