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]->msg_ctx_parent = wpa_s->parent;
 494                 hapd_iface->bss[i]->public_action_cb = ap_public_action_rx;
 495                 hapd_iface->bss[i]->public_action_cb_ctx = wpa_s;
 496                 hapd_iface->bss[i]->vendor_action_cb = ap_vendor_action_rx;
 497                 hapd_iface->bss[i]->vendor_action_cb_ctx = wpa_s;
 498                 hostapd_register_probereq_cb(hapd_iface->bss[i],
 499                                              ap_probe_req_rx, wpa_s);
 500                 hapd_iface->bss[i]->wps_reg_success_cb = ap_wps_reg_success_cb;
 501                 hapd_iface->bss[i]->wps_reg_success_cb_ctx = wpa_s;
 502                 hapd_iface->bss[i]->wps_event_cb = ap_wps_event_cb;
 503                 hapd_iface->bss[i]->wps_event_cb_ctx = wpa_s;
 504                 hapd_iface->bss[i]->sta_authorized_cb = ap_sta_authorized_cb;
 505                 hapd_iface->bss[i]->sta_authorized_cb_ctx = wpa_s;
 506 #ifdef CONFIG_P2P
 507                 hapd_iface->bss[i]->p2p = wpa_s->global->p2p;
 508                 hapd_iface->bss[i]->p2p_group = wpas_p2p_group_init(
 509                         wpa_s, ssid->p2p_persistent_group,
 510                         ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION);
 511 #endif /* CONFIG_P2P */
 512                 hapd_iface->bss[i]->setup_complete_cb = wpas_ap_configured_cb;
 513                 hapd_iface->bss[i]->setup_complete_cb_ctx = wpa_s;
 514         }
 515
 516         os_memcpy(hapd_iface->bss[0]->own_addr, wpa_s->own_addr, ETH_ALEN);
 517         hapd_iface->bss[0]->driver = wpa_s->driver;
 518         hapd_iface->bss[0]->drv_priv = wpa_s->drv_priv;
 519
 520         wpa_s->current_ssid = ssid;
 521         os_memcpy(wpa_s->bssid, wpa_s->own_addr, ETH_ALEN);
 522         wpa_s->assoc_freq = ssid->frequency;
 523
 524         if (hostapd_setup_interface(wpa_s->ap_iface)) {
 525                 wpa_printf(MSG_ERROR, "Failed to initialize AP interface");
 526                 wpa_supplicant_ap_deinit(wpa_s);
 527                 return -1;
 528         }
 529
 530         return 0;
 531 }
 532
 533
 534 void wpa_supplicant_ap_deinit(struct wpa_supplicant *wpa_s)
 535 {
 536 #ifdef CONFIG_WPS
 537         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 538 #endif /* CONFIG_WPS */
 539
 540         if (wpa_s->ap_iface == NULL)
 541                 return;
 542
 543         wpa_s->current_ssid = NULL;
 544         wpa_s->assoc_freq = 0;
 545         wpa_s->reassociated_connection = 0;
 546 #ifdef CONFIG_P2P
 547         if (wpa_s->ap_iface->bss)
 548                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
 549         wpas_p2p_group_deinit(wpa_s);
 550 #endif /* CONFIG_P2P */
 551         hostapd_interface_deinit(wpa_s->ap_iface);
 552         hostapd_interface_free(wpa_s->ap_iface);
 553         wpa_s->ap_iface = NULL;
 554         wpa_drv_deinit_ap(wpa_s);
 555 }
 556
 557
 558 void ap_tx_status(void *ctx, const u8 *addr,
 559                   const u8 *buf, size_t len, int ack)
 560 {
 561 #ifdef NEED_AP_MLME
 562         struct wpa_supplicant *wpa_s = ctx;
 563         hostapd_tx_status(wpa_s->ap_iface->bss[0], addr, buf, len, ack);
 564 #endif /* NEED_AP_MLME */
 565 }
 566
 567
 568 void ap_eapol_tx_status(void *ctx, const u8 *dst,
 569                         const u8 *data, size_t len, int ack)
 570 {
 571 #ifdef NEED_AP_MLME
 572         struct wpa_supplicant *wpa_s = ctx;
 573         hostapd_tx_status(wpa_s->ap_iface->bss[0], dst, data, len, ack);
 574 #endif /* NEED_AP_MLME */
 575 }
 576
 577
 578 void ap_client_poll_ok(void *ctx, const u8 *addr)
 579 {
 580 #ifdef NEED_AP_MLME
 581         struct wpa_supplicant *wpa_s = ctx;
 582         if (wpa_s->ap_iface)
 583                 hostapd_client_poll_ok(wpa_s->ap_iface->bss[0], addr);
 584 #endif /* NEED_AP_MLME */
 585 }
 586
 587
 588 void ap_rx_from_unknown_sta(void *ctx, const u8 *addr, int wds)
 589 {
 590 #ifdef NEED_AP_MLME
 591         struct wpa_supplicant *wpa_s = ctx;
 592         ieee802_11_rx_from_unknown(wpa_s->ap_iface->bss[0], addr, wds);
 593 #endif /* NEED_AP_MLME */
 594 }
 595
 596
 597 void ap_mgmt_rx(void *ctx, struct rx_mgmt *rx_mgmt)
 598 {
 599 #ifdef NEED_AP_MLME
 600         struct wpa_supplicant *wpa_s = ctx;
 601         struct hostapd_frame_info fi;
 602         os_memset(&fi, 0, sizeof(fi));
 603         fi.datarate = rx_mgmt->datarate;
 604         fi.ssi_signal = rx_mgmt->ssi_signal;
 605         ieee802_11_mgmt(wpa_s->ap_iface->bss[0], rx_mgmt->frame,
 606                         rx_mgmt->frame_len, &fi);
 607 #endif /* NEED_AP_MLME */
 608 }
 609
 610
 611 void ap_mgmt_tx_cb(void *ctx, const u8 *buf, size_t len, u16 stype, int ok)
 612 {
 613 #ifdef NEED_AP_MLME
 614         struct wpa_supplicant *wpa_s = ctx;
 615         ieee802_11_mgmt_cb(wpa_s->ap_iface->bss[0], buf, len, stype, ok);
 616 #endif /* NEED_AP_MLME */
 617 }
 618
 619
 620 void wpa_supplicant_ap_rx_eapol(struct wpa_supplicant *wpa_s,
 621                                 const u8 *src_addr, const u8 *buf, size_t len)
 622 {
 623         ieee802_1x_receive(wpa_s->ap_iface->bss[0], src_addr, buf, len);
 624 }
 625
 626
 627 #ifdef CONFIG_WPS
 628
 629 int wpa_supplicant_ap_wps_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 630                               const u8 *p2p_dev_addr)
 631 {
 632         if (!wpa_s->ap_iface)
 633                 return -1;
 634         return hostapd_wps_button_pushed(wpa_s->ap_iface->bss[0],
 635                                          p2p_dev_addr);
 636 }
 637
 638
 639 static int wpa_supplicant_ap_wps_sta_cancel(struct hostapd_data *hapd,
 640                                             struct sta_info *sta, void *ctx)
 641 {
 642         if (sta && (sta->flags & WLAN_STA_WPS)) {
 643                 ap_sta_deauthenticate(hapd, sta,
 644                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 645                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 646                            __func__, MAC2STR(sta->addr));
 647                 return 1;
 648         }
 649
 650         return 0;
 651 }
 652
 653
 654 int wpa_supplicant_ap_wps_cancel(struct wpa_supplicant *wpa_s)
 655 {
 656         struct wps_registrar *reg;
 657         int reg_sel = 0, wps_sta = 0;
 658
 659         if (!wpa_s->ap_iface || !wpa_s->ap_iface->bss[0]->wps)
 660                 return -1;
 661
 662         reg = wpa_s->ap_iface->bss[0]->wps->registrar;
 663         reg_sel = wps_registrar_wps_cancel(reg);
 664         wps_sta = ap_for_each_sta(wpa_s->ap_iface->bss[0],
 665                                   wpa_supplicant_ap_wps_sta_cancel, NULL);
 666
 667         if (!reg_sel && !wps_sta) {
 668                 wpa_printf(MSG_DEBUG, "No WPS operation in progress at this "
 669                            "time");
 670                 return -1;
 671         }
 672
 673         /*
 674          * There are 2 cases to return wps cancel as success:
 675          * 1. When wps cancel was initiated but no connection has been
 676          *    established with client yet.
 677          * 2. Client is in the middle of exchanging WPS messages.
 678          */
 679
 680         return 0;
 681 }
 682
 683
 684 int wpa_supplicant_ap_wps_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 685                               const char *pin, char *buf, size_t buflen)
 686 {
 687         int ret, ret_len = 0;
 688
 689         if (!wpa_s->ap_iface)
 690                 return -1;
 691
 692         if (pin == NULL) {
 693                 unsigned int rpin = wps_generate_pin();
 694                 ret_len = os_snprintf(buf, buflen, "%d", rpin);
 695                 pin = buf;
 696         } else
 697                 ret_len = os_snprintf(buf, buflen, "%s", pin);
 698
 699         ret = hostapd_wps_add_pin(wpa_s->ap_iface->bss[0], bssid, "any", pin,
 700                                   0);
 701         if (ret)
 702                 return -1;
 703         return ret_len;
 704 }
 705
 706
 707 static void wpas_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
 708 {
 709         struct wpa_supplicant *wpa_s = eloop_data;
 710         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
 711         wpas_wps_ap_pin_disable(wpa_s);
 712 }
 713
 714
 715 static void wpas_wps_ap_pin_enable(struct wpa_supplicant *wpa_s, int timeout)
 716 {
 717         struct hostapd_data *hapd;
 718
 719         if (wpa_s->ap_iface == NULL)
 720                 return;
 721         hapd = wpa_s->ap_iface->bss[0];
 722         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
 723         hapd->ap_pin_failures = 0;
 724         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 725         if (timeout > 0)
 726                 eloop_register_timeout(timeout, 0,
 727                                        wpas_wps_ap_pin_timeout, wpa_s, NULL);
 728 }
 729
 730
 731 void wpas_wps_ap_pin_disable(struct wpa_supplicant *wpa_s)
 732 {
 733         struct hostapd_data *hapd;
 734
 735         if (wpa_s->ap_iface == NULL)
 736                 return;
 737         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
 738         hapd = wpa_s->ap_iface->bss[0];
 739         os_free(hapd->conf->ap_pin);
 740         hapd->conf->ap_pin = NULL;
 741         eloop_cancel_timeout(wpas_wps_ap_pin_timeout, wpa_s, NULL);
 742 }
 743
 744
 745 const char * wpas_wps_ap_pin_random(struct wpa_supplicant *wpa_s, int timeout)
 746 {
 747         struct hostapd_data *hapd;
 748         unsigned int pin;
 749         char pin_txt[9];
 750
 751         if (wpa_s->ap_iface == NULL)
 752                 return NULL;
 753         hapd = wpa_s->ap_iface->bss[0];
 754         pin = wps_generate_pin();
 755         os_snprintf(pin_txt, sizeof(pin_txt), "%u", pin);
 756         os_free(hapd->conf->ap_pin);
 757         hapd->conf->ap_pin = os_strdup(pin_txt);
 758         if (hapd->conf->ap_pin == NULL)
 759                 return NULL;
 760         wpas_wps_ap_pin_enable(wpa_s, timeout);
 761
 762         return hapd->conf->ap_pin;
 763 }
 764
 765
 766 const char * wpas_wps_ap_pin_get(struct wpa_supplicant *wpa_s)
 767 {
 768         struct hostapd_data *hapd;
 769         if (wpa_s->ap_iface == NULL)
 770                 return NULL;
 771         hapd = wpa_s->ap_iface->bss[0];
 772         return hapd->conf->ap_pin;
 773 }
 774
 775
 776 int wpas_wps_ap_pin_set(struct wpa_supplicant *wpa_s, const char *pin,
 777                         int timeout)
 778 {
 779         struct hostapd_data *hapd;
 780         char pin_txt[9];
 781         int ret;
 782
 783         if (wpa_s->ap_iface == NULL)
 784                 return -1;
 785         hapd = wpa_s->ap_iface->bss[0];
 786         ret = os_snprintf(pin_txt, sizeof(pin_txt), "%s", pin);
 787         if (ret < 0 || ret >= (int) sizeof(pin_txt))
 788                 return -1;
 789         os_free(hapd->conf->ap_pin);
 790         hapd->conf->ap_pin = os_strdup(pin_txt);
 791         if (hapd->conf->ap_pin == NULL)
 792                 return -1;
 793         wpas_wps_ap_pin_enable(wpa_s, timeout);
 794
 795         return 0;
 796 }
 797
 798
 799 void wpa_supplicant_ap_pwd_auth_fail(struct wpa_supplicant *wpa_s)
 800 {
 801         struct hostapd_data *hapd;
 802
 803         if (wpa_s->ap_iface == NULL)
 804                 return;
 805         hapd = wpa_s->ap_iface->bss[0];
 806
 807         /*
 808          * Registrar failed to prove its knowledge of the AP PIN. Disable AP
 809          * PIN if this happens multiple times to slow down brute force attacks.
 810          */
 811         hapd->ap_pin_failures++;
 812         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u",
 813                    hapd->ap_pin_failures);
 814         if (hapd->ap_pin_failures < 3)
 815                 return;
 816
 817         wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN");
 818         hapd->ap_pin_failures = 0;
 819         os_free(hapd->conf->ap_pin);
 820         hapd->conf->ap_pin = NULL;
 821 }
 822
 823 #endif /* CONFIG_WPS */
 824
 825
 826 #ifdef CONFIG_CTRL_IFACE
 827
 828 int ap_ctrl_iface_sta_first(struct wpa_supplicant *wpa_s,
 829                             char *buf, size_t buflen)
 830 {
 831         if (wpa_s->ap_iface == NULL)
 832                 return -1;
 833         return hostapd_ctrl_iface_sta_first(wpa_s->ap_iface->bss[0],
 834                                             buf, buflen);
 835 }
 836
 837
 838 int ap_ctrl_iface_sta(struct wpa_supplicant *wpa_s, const char *txtaddr,
 839                       char *buf, size_t buflen)
 840 {
 841         if (wpa_s->ap_iface == NULL)
 842                 return -1;
 843         return hostapd_ctrl_iface_sta(wpa_s->ap_iface->bss[0], txtaddr,
 844                                       buf, buflen);
 845 }
 846
 847
 848 int ap_ctrl_iface_sta_next(struct wpa_supplicant *wpa_s, const char *txtaddr,
 849                            char *buf, size_t buflen)
 850 {
 851         if (wpa_s->ap_iface == NULL)
 852                 return -1;
 853         return hostapd_ctrl_iface_sta_next(wpa_s->ap_iface->bss[0], txtaddr,
 854                                            buf, buflen);
 855 }
 856
 857
 858 int ap_ctrl_iface_wpa_get_status(struct wpa_supplicant *wpa_s, char *buf,
 859                                  size_t buflen, int verbose)
 860 {
 861         char *pos = buf, *end = buf + buflen;
 862         int ret;
 863         struct hostapd_bss_config *conf;
 864
 865         if (wpa_s->ap_iface == NULL)
 866                 return -1;
 867
 868         conf = wpa_s->ap_iface->bss[0]->conf;
 869         if (conf->wpa == 0)
 870                 return 0;
 871
 872         ret = os_snprintf(pos, end - pos,
 873                           "pairwise_cipher=%s\n"
 874                           "group_cipher=%s\n"
 875                           "key_mgmt=%s\n",
 876                           wpa_cipher_txt(conf->rsn_pairwise),
 877                           wpa_cipher_txt(conf->wpa_group),
 878                           wpa_key_mgmt_txt(conf->wpa_key_mgmt,
 879                                            conf->wpa));
 880         if (ret < 0 || ret >= end - pos)
 881                 return pos - buf;
 882         pos += ret;
 883         return pos - buf;
 884 }
 885
 886 #endif /* CONFIG_CTRL_IFACE */
 887
 888
 889 int wpa_supplicant_ap_update_beacon(struct wpa_supplicant *wpa_s)
 890 {
 891         struct hostapd_iface *iface = wpa_s->ap_iface;
 892         struct wpa_ssid *ssid = wpa_s->current_ssid;
 893         struct hostapd_data *hapd;
 894
 895         if (ssid == NULL || wpa_s->ap_iface == NULL)
 896                 return -1;
 897
 898 #ifdef CONFIG_P2P
 899         if (ssid->mode == WPAS_MODE_P2P_GO)
 900                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER;
 901         else if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
 902                 iface->conf->bss[0].p2p = P2P_ENABLED | P2P_GROUP_OWNER |
 903                         P2P_GROUP_FORMATION;
 904 #endif /* CONFIG_P2P */
 905
 906         ieee802_11_set_beacons(iface);
 907         hapd = iface->bss[0];
 908         hostapd_set_ap_wps_ie(hapd);
 909
 910         return 0;
 911 }
 912
 913
 914 int wpa_supplicant_ap_mac_addr_filter(struct wpa_supplicant *wpa_s,
 915                                       const u8 *addr)
 916 {
 917         struct hostapd_data *hapd;
 918         struct hostapd_bss_config *conf;
 919
 920         if (!wpa_s->ap_iface)
 921                 return -1;
 922
 923         if (addr)
 924                 wpa_printf(MSG_DEBUG, "AP: Set MAC address filter: " MACSTR,
 925                            MAC2STR(addr));
 926         else
 927                 wpa_printf(MSG_DEBUG, "AP: Clear MAC address filter");
 928
 929         hapd = wpa_s->ap_iface->bss[0];
 930         conf = hapd->conf;
 931
 932         os_free(conf->accept_mac);
 933         conf->accept_mac = NULL;
 934         conf->num_accept_mac = 0;
 935         os_free(conf->deny_mac);
 936         conf->deny_mac = NULL;
 937         conf->num_deny_mac = 0;
 938
 939         if (addr == NULL) {
 940                 conf->macaddr_acl = ACCEPT_UNLESS_DENIED;
 941                 return 0;
 942         }
 943
 944         conf->macaddr_acl = DENY_UNLESS_ACCEPTED;
 945         conf->accept_mac = os_zalloc(sizeof(struct mac_acl_entry));
 946         if (conf->accept_mac == NULL)
 947                 return -1;
 948         os_memcpy(conf->accept_mac[0].addr, addr, ETH_ALEN);
 949         conf->num_accept_mac = 1;
 950
 951         return 0;
 952 }