src/ap/drv_callbacks.c

   1 /*
   2  * hostapd / Callback functions for driver wrappers
   3  * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "radius/radius.h"
  13 #include "drivers/driver.h"
  14 #include "common/ieee802_11_defs.h"
  15 #include "common/ieee802_11_common.h"
  16 #include "crypto/random.h"
  17 #include "p2p/p2p.h"
  18 #include "wps/wps.h"
  19 #include "wnm_ap.h"
  20 #include "hostapd.h"
  21 #include "ieee802_11.h"
  22 #include "sta_info.h"
  23 #include "accounting.h"
  24 #include "tkip_countermeasures.h"
  25 #include "ieee802_1x.h"
  26 #include "wpa_auth.h"
  27 #include "wps_hostapd.h"
  28 #include "ap_drv_ops.h"
  29 #include "ap_config.h"
  30 #include "hw_features.h"
  31
  32
  33 int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
  34                         const u8 *req_ies, size_t req_ies_len, int reassoc)
  35 {
  36         struct sta_info *sta;
  37         int new_assoc, res;
  38         struct ieee802_11_elems elems;
  39         const u8 *ie;
  40         size_t ielen;
  41 #ifdef CONFIG_IEEE80211R
  42         u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
  43         u8 *p = buf;
  44 #endif /* CONFIG_IEEE80211R */
  45         u16 reason = WLAN_REASON_UNSPECIFIED;
  46         u16 status = WLAN_STATUS_SUCCESS;
  47
  48         if (addr == NULL) {
  49                 /*
  50                  * This could potentially happen with unexpected event from the
  51                  * driver wrapper. This was seen at least in one case where the
  52                  * driver ended up being set to station mode while hostapd was
  53                  * running, so better make sure we stop processing such an
  54                  * event here.
  55                  */
  56                 wpa_printf(MSG_DEBUG, "hostapd_notif_assoc: Skip event with "
  57                            "no address");
  58                 return -1;
  59         }
  60         random_add_randomness(addr, ETH_ALEN);
  61
  62         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
  63                        HOSTAPD_LEVEL_INFO, "associated");
  64
  65         ieee802_11_parse_elems(req_ies, req_ies_len, &elems, 0);
  66         if (elems.wps_ie) {
  67                 ie = elems.wps_ie - 2;
  68                 ielen = elems.wps_ie_len + 2;
  69                 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)AssocReq");
  70         } else if (elems.rsn_ie) {
  71                 ie = elems.rsn_ie - 2;
  72                 ielen = elems.rsn_ie_len + 2;
  73                 wpa_printf(MSG_DEBUG, "STA included RSN IE in (Re)AssocReq");
  74         } else if (elems.wpa_ie) {
  75                 ie = elems.wpa_ie - 2;
  76                 ielen = elems.wpa_ie_len + 2;
  77                 wpa_printf(MSG_DEBUG, "STA included WPA IE in (Re)AssocReq");
  78         } else {
  79                 ie = NULL;
  80                 ielen = 0;
  81                 wpa_printf(MSG_DEBUG, "STA did not include WPS/RSN/WPA IE in "
  82                            "(Re)AssocReq");
  83         }
  84
  85         sta = ap_get_sta(hapd, addr);
  86         if (sta) {
  87                 accounting_sta_stop(hapd, sta);
  88
  89                 /*
  90                  * Make sure that the previously registered inactivity timer
  91                  * will not remove the STA immediately.
  92                  */
  93                 sta->timeout_next = STA_NULLFUNC;
  94         } else {
  95                 sta = ap_sta_add(hapd, addr);
  96                 if (sta == NULL) {
  97                         hostapd_drv_sta_disassoc(hapd, addr,
  98                                                  WLAN_REASON_DISASSOC_AP_BUSY);
  99                         return -1;
 100                 }
 101         }
 102         sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);
 103
 104 #ifdef CONFIG_P2P
 105         if (elems.p2p) {
 106                 wpabuf_free(sta->p2p_ie);
 107                 sta->p2p_ie = ieee802_11_vendor_ie_concat(req_ies, req_ies_len,
 108                                                           P2P_IE_VENDOR_TYPE);
 109         }
 110 #endif /* CONFIG_P2P */
 111
 112         if (hapd->conf->wpa) {
 113                 if (ie == NULL || ielen == 0) {
 114 #ifdef CONFIG_WPS
 115                         if (hapd->conf->wps_state) {
 116                                 wpa_printf(MSG_DEBUG, "STA did not include "
 117                                            "WPA/RSN IE in (Re)Association "
 118                                            "Request - possible WPS use");
 119                                 sta->flags |= WLAN_STA_MAYBE_WPS;
 120                                 goto skip_wpa_check;
 121                         }
 122 #endif /* CONFIG_WPS */
 123
 124                         wpa_printf(MSG_DEBUG, "No WPA/RSN IE from STA");
 125                         return -1;
 126                 }
 127 #ifdef CONFIG_WPS
 128                 if (hapd->conf->wps_state && ie[0] == 0xdd && ie[1] >= 4 &&
 129                     os_memcmp(ie + 2, "\x00\x50\xf2\x04", 4) == 0) {
 130                         struct wpabuf *wps;
 131                         sta->flags |= WLAN_STA_WPS;
 132                         wps = ieee802_11_vendor_ie_concat(ie, ielen,
 133                                                           WPS_IE_VENDOR_TYPE);
 134                         if (wps) {
 135                                 if (wps_is_20(wps)) {
 136                                         wpa_printf(MSG_DEBUG, "WPS: STA "
 137                                                    "supports WPS 2.0");
 138                                         sta->flags |= WLAN_STA_WPS2;
 139                                 }
 140                                 wpabuf_free(wps);
 141                         }
 142                         goto skip_wpa_check;
 143                 }
 144 #endif /* CONFIG_WPS */
 145
 146                 if (sta->wpa_sm == NULL)
 147                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 148                                                         sta->addr);
 149                 if (sta->wpa_sm == NULL) {
 150                         wpa_printf(MSG_ERROR, "Failed to initialize WPA state "
 151                                    "machine");
 152                         return -1;
 153                 }
 154                 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
 155                                           ie, ielen,
 156                                           elems.mdie, elems.mdie_len);
 157                 if (res != WPA_IE_OK) {
 158                         wpa_printf(MSG_DEBUG, "WPA/RSN information element "
 159                                    "rejected? (res %u)", res);
 160                         wpa_hexdump(MSG_DEBUG, "IE", ie, ielen);
 161                         if (res == WPA_INVALID_GROUP) {
 162                                 reason = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
 163                                 status = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
 164                         } else if (res == WPA_INVALID_PAIRWISE) {
 165                                 reason = WLAN_REASON_PAIRWISE_CIPHER_NOT_VALID;
 166                                 status = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
 167                         } else if (res == WPA_INVALID_AKMP) {
 168                                 reason = WLAN_REASON_AKMP_NOT_VALID;
 169                                 status = WLAN_STATUS_AKMP_NOT_VALID;
 170                         }
 171 #ifdef CONFIG_IEEE80211W
 172                         else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION) {
 173                                 reason = WLAN_REASON_INVALID_IE;
 174                                 status = WLAN_STATUS_INVALID_IE;
 175                         } else if (res == WPA_INVALID_MGMT_GROUP_CIPHER) {
 176                                 reason = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
 177                                 status = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
 178                         }
 179 #endif /* CONFIG_IEEE80211W */
 180                         else {
 181                                 reason = WLAN_REASON_INVALID_IE;
 182                                 status = WLAN_STATUS_INVALID_IE;
 183                         }
 184                         goto fail;
 185                 }
 186 #ifdef CONFIG_IEEE80211W
 187                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
 188                     sta->sa_query_count > 0)
 189                         ap_check_sa_query_timeout(hapd, sta);
 190                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
 191                     (sta->auth_alg != WLAN_AUTH_FT)) {
 192                         /*
 193                          * STA has already been associated with MFP and SA
 194                          * Query timeout has not been reached. Reject the
 195                          * association attempt temporarily and start SA Query,
 196                          * if one is not pending.
 197                          */
 198
 199                         if (sta->sa_query_count == 0)
 200                                 ap_sta_start_sa_query(hapd, sta);
 201
 202 #ifdef CONFIG_IEEE80211R
 203                         status = WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
 204
 205                         p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
 206
 207                         hostapd_sta_assoc(hapd, addr, reassoc, status, buf,
 208                                           p - buf);
 209 #endif /* CONFIG_IEEE80211R */
 210                         return 0;
 211                 }
 212
 213                 if (wpa_auth_uses_mfp(sta->wpa_sm))
 214                         sta->flags |= WLAN_STA_MFP;
 215                 else
 216                         sta->flags &= ~WLAN_STA_MFP;
 217 #endif /* CONFIG_IEEE80211W */
 218
 219 #ifdef CONFIG_IEEE80211R
 220                 if (sta->auth_alg == WLAN_AUTH_FT) {
 221                         status = wpa_ft_validate_reassoc(sta->wpa_sm, req_ies,
 222                                                          req_ies_len);
 223                         if (status != WLAN_STATUS_SUCCESS) {
 224                                 if (status == WLAN_STATUS_INVALID_PMKID)
 225                                         reason = WLAN_REASON_INVALID_IE;
 226                                 if (status == WLAN_STATUS_INVALID_MDIE)
 227                                         reason = WLAN_REASON_INVALID_IE;
 228                                 if (status == WLAN_STATUS_INVALID_FTIE)
 229                                         reason = WLAN_REASON_INVALID_IE;
 230                                 goto fail;
 231                         }
 232                 }
 233 #endif /* CONFIG_IEEE80211R */
 234         } else if (hapd->conf->wps_state) {
 235 #ifdef CONFIG_WPS
 236                 struct wpabuf *wps;
 237                 if (req_ies)
 238                         wps = ieee802_11_vendor_ie_concat(req_ies, req_ies_len,
 239                                                           WPS_IE_VENDOR_TYPE);
 240                 else
 241                         wps = NULL;
 242 #ifdef CONFIG_WPS_STRICT
 243                 if (wps && wps_validate_assoc_req(wps) < 0) {
 244                         reason = WLAN_REASON_INVALID_IE;
 245                         status = WLAN_STATUS_INVALID_IE;
 246                         wpabuf_free(wps);
 247                         goto fail;
 248                 }
 249 #endif /* CONFIG_WPS_STRICT */
 250                 if (wps) {
 251                         sta->flags |= WLAN_STA_WPS;
 252                         if (wps_is_20(wps)) {
 253                                 wpa_printf(MSG_DEBUG, "WPS: STA supports "
 254                                            "WPS 2.0");
 255                                 sta->flags |= WLAN_STA_WPS2;
 256                         }
 257                 } else
 258                         sta->flags |= WLAN_STA_MAYBE_WPS;
 259                 wpabuf_free(wps);
 260 #endif /* CONFIG_WPS */
 261         }
 262 #ifdef CONFIG_WPS
 263 skip_wpa_check:
 264 #endif /* CONFIG_WPS */
 265
 266 #ifdef CONFIG_IEEE80211R
 267         p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, buf, sizeof(buf),
 268                                         sta->auth_alg, req_ies, req_ies_len);
 269
 270         hostapd_sta_assoc(hapd, addr, reassoc, status, buf, p - buf);
 271 #else /* CONFIG_IEEE80211R */
 272         /* Keep compiler silent about unused variables */
 273         if (status) {
 274         }
 275 #endif /* CONFIG_IEEE80211R */
 276
 277         new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
 278         sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
 279
 280         if (reassoc && (sta->auth_alg == WLAN_AUTH_FT))
 281                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
 282         else
 283                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
 284
 285         hostapd_new_assoc_sta(hapd, sta, !new_assoc);
 286
 287         ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
 288
 289 #ifdef CONFIG_P2P
 290         if (req_ies) {
 291                 p2p_group_notif_assoc(hapd->p2p_group, sta->addr,
 292                                       req_ies, req_ies_len);
 293         }
 294 #endif /* CONFIG_P2P */
 295
 296         return 0;
 297
 298 fail:
 299 #ifdef CONFIG_IEEE80211R
 300         hostapd_sta_assoc(hapd, addr, reassoc, status, buf, p - buf);
 301 #endif /* CONFIG_IEEE80211R */
 302         hostapd_drv_sta_disassoc(hapd, sta->addr, reason);
 303         ap_free_sta(hapd, sta);
 304         return -1;
 305 }
 306
 307
 308 void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr)
 309 {
 310         struct sta_info *sta;
 311
 312         if (addr == NULL) {
 313                 /*
 314                  * This could potentially happen with unexpected event from the
 315                  * driver wrapper. This was seen at least in one case where the
 316                  * driver ended up reporting a station mode event while hostapd
 317                  * was running, so better make sure we stop processing such an
 318                  * event here.
 319                  */
 320                 wpa_printf(MSG_DEBUG, "hostapd_notif_disassoc: Skip event "
 321                            "with no address");
 322                 return;
 323         }
 324
 325         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
 326                        HOSTAPD_LEVEL_INFO, "disassociated");
 327
 328         sta = ap_get_sta(hapd, addr);
 329         if (sta == NULL) {
 330                 wpa_printf(MSG_DEBUG, "Disassociation notification for "
 331                            "unknown STA " MACSTR, MAC2STR(addr));
 332                 return;
 333         }
 334
 335         ap_sta_set_authorized(hapd, sta, 0);
 336         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 337         wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
 338         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
 339         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 340         ap_free_sta(hapd, sta);
 341 }
 342
 343
 344 void hostapd_event_sta_low_ack(struct hostapd_data *hapd, const u8 *addr)
 345 {
 346         struct sta_info *sta = ap_get_sta(hapd, addr);
 347
 348         if (!sta || !hapd->conf->disassoc_low_ack)
 349                 return;
 350
 351         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
 352                        HOSTAPD_LEVEL_INFO, "disconnected due to excessive "
 353                        "missing ACKs");
 354         hostapd_drv_sta_disassoc(hapd, addr, WLAN_REASON_DISASSOC_LOW_ACK);
 355         if (sta)
 356                 ap_sta_disassociate(hapd, sta, WLAN_REASON_DISASSOC_LOW_ACK);
 357 }
 358
 359
 360 void hostapd_event_ch_switch(struct hostapd_data *hapd, int freq, int ht,
 361                              int offset)
 362 {
 363 #ifdef NEED_AP_MLME
 364         int channel;
 365
 366         hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
 367                        HOSTAPD_LEVEL_INFO, "driver had channel switch: "
 368                        "freq=%d, ht=%d, offset=%d", freq, ht, offset);
 369
 370         hapd->iface->freq = freq;
 371
 372         channel = hostapd_hw_get_channel(hapd, freq);
 373         if (!channel) {
 374                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
 375                                HOSTAPD_LEVEL_WARNING, "driver switched to "
 376                                "bad channel!");
 377                 return;
 378         }
 379
 380         hapd->iconf->channel = channel;
 381         hapd->iconf->ieee80211n = ht;
 382         hapd->iconf->secondary_channel = offset;
 383 #endif /* NEED_AP_MLME */
 384 }
 385
 386
 387 int hostapd_probe_req_rx(struct hostapd_data *hapd, const u8 *sa, const u8 *da,
 388                          const u8 *bssid, const u8 *ie, size_t ie_len,
 389                          int ssi_signal)
 390 {
 391         size_t i;
 392         int ret = 0;
 393
 394         if (sa == NULL || ie == NULL)
 395                 return -1;
 396
 397         random_add_randomness(sa, ETH_ALEN);
 398         for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++) {
 399                 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
 400                                             sa, da, bssid, ie, ie_len,
 401                                             ssi_signal) > 0) {
 402                         ret = 1;
 403                         break;
 404                 }
 405         }
 406         return ret;
 407 }
 408
 409
 410 #ifdef HOSTAPD
 411
 412 #ifdef CONFIG_IEEE80211R
 413 static void hostapd_notify_auth_ft_finish(void *ctx, const u8 *dst,
 414                                           const u8 *bssid,
 415                                           u16 auth_transaction, u16 status,
 416                                           const u8 *ies, size_t ies_len)
 417 {
 418         struct hostapd_data *hapd = ctx;
 419         struct sta_info *sta;
 420
 421         sta = ap_get_sta(hapd, dst);
 422         if (sta == NULL)
 423                 return;
 424
 425         hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
 426                        HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
 427         sta->flags |= WLAN_STA_AUTH;
 428
 429         hostapd_sta_auth(hapd, dst, auth_transaction, status, ies, ies_len);
 430 }
 431 #endif /* CONFIG_IEEE80211R */
 432
 433
 434 static void hostapd_notif_auth(struct hostapd_data *hapd,
 435                                struct auth_info *rx_auth)
 436 {
 437         struct sta_info *sta;
 438         u16 status = WLAN_STATUS_SUCCESS;
 439         u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
 440         size_t resp_ies_len = 0;
 441
 442         sta = ap_get_sta(hapd, rx_auth->peer);
 443         if (!sta) {
 444                 sta = ap_sta_add(hapd, rx_auth->peer);
 445                 if (sta == NULL) {
 446                         status = WLAN_STATUS_UNSPECIFIED_FAILURE;
 447                         goto fail;
 448                 }
 449         }
 450         sta->flags &= ~WLAN_STA_PREAUTH;
 451         ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
 452 #ifdef CONFIG_IEEE80211R
 453         if (rx_auth->auth_type == WLAN_AUTH_FT && hapd->wpa_auth) {
 454                 sta->auth_alg = WLAN_AUTH_FT;
 455                 if (sta->wpa_sm == NULL)
 456                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 457                                                         sta->addr);
 458                 if (sta->wpa_sm == NULL) {
 459                         wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
 460                                    "state machine");
 461                         status = WLAN_STATUS_UNSPECIFIED_FAILURE;
 462                         goto fail;
 463                 }
 464                 wpa_ft_process_auth(sta->wpa_sm, rx_auth->bssid,
 465                                     rx_auth->auth_transaction, rx_auth->ies,
 466                                     rx_auth->ies_len,
 467                                     hostapd_notify_auth_ft_finish, hapd);
 468                 return;
 469         }
 470 #endif /* CONFIG_IEEE80211R */
 471 fail:
 472         hostapd_sta_auth(hapd, rx_auth->peer, rx_auth->auth_transaction + 1,
 473                          status, resp_ies, resp_ies_len);
 474 }
 475
 476
 477 static void hostapd_action_rx(struct hostapd_data *hapd,
 478                               struct rx_action *action)
 479 {
 480         struct sta_info *sta;
 481
 482         wpa_printf(MSG_DEBUG, "RX_ACTION cat %d action plen %d",
 483                    action->category, (int) action->len);
 484
 485         sta = ap_get_sta(hapd, action->sa);
 486         if (sta == NULL) {
 487                 wpa_printf(MSG_DEBUG, "%s: station not found", __func__);
 488                 return;
 489         }
 490 #ifdef CONFIG_IEEE80211R
 491         if (action->category == WLAN_ACTION_FT) {
 492                 wpa_printf(MSG_DEBUG, "%s: FT_ACTION length %d",
 493                            __func__, (int) action->len);
 494                 wpa_ft_action_rx(sta->wpa_sm, action->data, action->len);
 495         }
 496 #endif /* CONFIG_IEEE80211R */
 497 #ifdef CONFIG_IEEE80211W
 498         if (action->category == WLAN_ACTION_SA_QUERY && action->len >= 4) {
 499                 wpa_printf(MSG_DEBUG, "%s: SA_QUERY_ACTION length %d",
 500                            __func__, (int) action->len);
 501                 ieee802_11_sa_query_action(hapd, action->sa,
 502                                            *(action->data + 1),
 503                                            action->data + 2);
 504         }
 505 #endif /* CONFIG_IEEE80211W */
 506 #ifdef CONFIG_IEEE80211V
 507         if (action->category == WLAN_ACTION_WNM) {
 508                 wpa_printf(MSG_DEBUG, "%s: WNM_ACTION length %d",
 509                            __func__, (int) action->len);
 510                 ieee802_11_rx_wnm_action_ap(hapd, action);
 511         }
 512 #endif /* CONFIG_IEEE80211V */
 513 }
 514
 515
 516 #ifdef NEED_AP_MLME
 517
 518 #define HAPD_BROADCAST ((struct hostapd_data *) -1)
 519
 520 static struct hostapd_data * get_hapd_bssid(struct hostapd_iface *iface,
 521                                             const u8 *bssid)
 522 {
 523         size_t i;
 524
 525         if (bssid == NULL)
 526                 return NULL;
 527         if (bssid[0] == 0xff && bssid[1] == 0xff && bssid[2] == 0xff &&
 528             bssid[3] == 0xff && bssid[4] == 0xff && bssid[5] == 0xff)
 529                 return HAPD_BROADCAST;
 530
 531         for (i = 0; i < iface->num_bss; i++) {
 532                 if (os_memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0)
 533                         return iface->bss[i];
 534         }
 535
 536         return NULL;
 537 }
 538
 539
 540 static void hostapd_rx_from_unknown_sta(struct hostapd_data *hapd,
 541                                         const u8 *bssid, const u8 *addr,
 542                                         int wds)
 543 {
 544         hapd = get_hapd_bssid(hapd->iface, bssid);
 545         if (hapd == NULL || hapd == HAPD_BROADCAST)
 546                 return;
 547
 548         ieee802_11_rx_from_unknown(hapd, addr, wds);
 549 }
 550
 551
 552 static void hostapd_mgmt_rx(struct hostapd_data *hapd, struct rx_mgmt *rx_mgmt)
 553 {
 554         struct hostapd_iface *iface = hapd->iface;
 555         const struct ieee80211_hdr *hdr;
 556         const u8 *bssid;
 557         struct hostapd_frame_info fi;
 558
 559         hdr = (const struct ieee80211_hdr *) rx_mgmt->frame;
 560         bssid = get_hdr_bssid(hdr, rx_mgmt->frame_len);
 561         if (bssid == NULL)
 562                 return;
 563
 564         hapd = get_hapd_bssid(iface, bssid);
 565         if (hapd == NULL) {
 566                 u16 fc;
 567                 fc = le_to_host16(hdr->frame_control);
 568
 569                 /*
 570                  * Drop frames to unknown BSSIDs except for Beacon frames which
 571                  * could be used to update neighbor information.
 572                  */
 573                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
 574                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
 575                         hapd = iface->bss[0];
 576                 else
 577                         return;
 578         }
 579
 580         os_memset(&fi, 0, sizeof(fi));
 581         fi.datarate = rx_mgmt->datarate;
 582         fi.ssi_signal = rx_mgmt->ssi_signal;
 583
 584         if (hapd == HAPD_BROADCAST) {
 585                 size_t i;
 586                 for (i = 0; i < iface->num_bss; i++)
 587                         ieee802_11_mgmt(iface->bss[i], rx_mgmt->frame,
 588                                         rx_mgmt->frame_len, &fi);
 589         } else
 590                 ieee802_11_mgmt(hapd, rx_mgmt->frame, rx_mgmt->frame_len, &fi);
 591
 592         random_add_randomness(&fi, sizeof(fi));
 593 }
 594
 595
 596 static void hostapd_rx_action(struct hostapd_data *hapd,
 597                               struct rx_action *rx_action)
 598 {
 599         struct rx_mgmt rx_mgmt;
 600         u8 *buf;
 601         struct ieee80211_hdr *hdr;
 602
 603         wpa_printf(MSG_DEBUG, "EVENT_RX_ACTION DA=" MACSTR " SA=" MACSTR
 604                    " BSSID=" MACSTR " category=%u",
 605                    MAC2STR(rx_action->da), MAC2STR(rx_action->sa),
 606                    MAC2STR(rx_action->bssid), rx_action->category);
 607         wpa_hexdump(MSG_MSGDUMP, "Received action frame contents",
 608                     rx_action->data, rx_action->len);
 609
 610         buf = os_zalloc(24 + 1 + rx_action->len);
 611         if (buf == NULL)
 612                 return;
 613         hdr = (struct ieee80211_hdr *) buf;
 614         hdr->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 615                                           WLAN_FC_STYPE_ACTION);
 616         if (rx_action->category == WLAN_ACTION_SA_QUERY) {
 617                 /*
 618                  * Assume frame was protected; it would have been dropped if
 619                  * not.
 620                  */
 621                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
 622         }
 623         os_memcpy(hdr->addr1, rx_action->da, ETH_ALEN);
 624         os_memcpy(hdr->addr2, rx_action->sa, ETH_ALEN);
 625         os_memcpy(hdr->addr3, rx_action->bssid, ETH_ALEN);
 626         buf[24] = rx_action->category;
 627         os_memcpy(buf + 24 + 1, rx_action->data, rx_action->len);
 628         os_memset(&rx_mgmt, 0, sizeof(rx_mgmt));
 629         rx_mgmt.frame = buf;
 630         rx_mgmt.frame_len = 24 + 1 + rx_action->len;
 631         hostapd_mgmt_rx(hapd, &rx_mgmt);
 632         os_free(buf);
 633 }
 634
 635
 636 static void hostapd_mgmt_tx_cb(struct hostapd_data *hapd, const u8 *buf,
 637                                size_t len, u16 stype, int ok)
 638 {
 639         struct ieee80211_hdr *hdr;
 640         hdr = (struct ieee80211_hdr *) buf;
 641         hapd = get_hapd_bssid(hapd->iface, get_hdr_bssid(hdr, len));
 642         if (hapd == NULL || hapd == HAPD_BROADCAST)
 643                 return;
 644         ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
 645 }
 646
 647 #endif /* NEED_AP_MLME */
 648
 649
 650 static int hostapd_event_new_sta(struct hostapd_data *hapd, const u8 *addr)
 651 {
 652         struct sta_info *sta = ap_get_sta(hapd, addr);
 653         if (sta)
 654                 return 0;
 655
 656         wpa_printf(MSG_DEBUG, "Data frame from unknown STA " MACSTR
 657                    " - adding a new STA", MAC2STR(addr));
 658         sta = ap_sta_add(hapd, addr);
 659         if (sta) {
 660                 hostapd_new_assoc_sta(hapd, sta, 0);
 661         } else {
 662                 wpa_printf(MSG_DEBUG, "Failed to add STA entry for " MACSTR,
 663                            MAC2STR(addr));
 664                 return -1;
 665         }
 666
 667         return 0;
 668 }
 669
 670
 671 static void hostapd_event_eapol_rx(struct hostapd_data *hapd, const u8 *src,
 672                                    const u8 *data, size_t data_len)
 673 {
 674         struct hostapd_iface *iface = hapd->iface;
 675         struct sta_info *sta;
 676         size_t j;
 677
 678         for (j = 0; j < iface->num_bss; j++) {
 679                 if ((sta = ap_get_sta(iface->bss[j], src))) {
 680                         if (sta->flags & WLAN_STA_ASSOC) {
 681                                 hapd = iface->bss[j];
 682                                 break;
 683                         }
 684                 }
 685         }
 686
 687         ieee802_1x_receive(hapd, src, data, data_len);
 688 }
 689
 690
 691 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
 692                           union wpa_event_data *data)
 693 {
 694         struct hostapd_data *hapd = ctx;
 695 #ifndef CONFIG_NO_STDOUT_DEBUG
 696         int level = MSG_DEBUG;
 697
 698         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame &&
 699             data->rx_mgmt.frame_len >= 24) {
 700                 const struct ieee80211_hdr *hdr;
 701                 u16 fc;
 702                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
 703                 fc = le_to_host16(hdr->frame_control);
 704                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
 705                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
 706                         level = MSG_EXCESSIVE;
 707         }
 708
 709         wpa_dbg(hapd->msg_ctx, level, "Event %s (%d) received",
 710                 event_to_string(event), event);
 711 #endif /* CONFIG_NO_STDOUT_DEBUG */
 712
 713         switch (event) {
 714         case EVENT_MICHAEL_MIC_FAILURE:
 715                 michael_mic_failure(hapd, data->michael_mic_failure.src, 1);
 716                 break;
 717         case EVENT_SCAN_RESULTS:
 718                 if (hapd->iface->scan_cb)
 719                         hapd->iface->scan_cb(hapd->iface);
 720                 break;
 721 #ifdef CONFIG_IEEE80211R
 722         case EVENT_FT_RRB_RX:
 723                 wpa_ft_rrb_rx(hapd->wpa_auth, data->ft_rrb_rx.src,
 724                               data->ft_rrb_rx.data, data->ft_rrb_rx.data_len);
 725                 break;
 726 #endif /* CONFIG_IEEE80211R */
 727         case EVENT_WPS_BUTTON_PUSHED:
 728                 hostapd_wps_button_pushed(hapd, NULL);
 729                 break;
 730 #ifdef NEED_AP_MLME
 731         case EVENT_TX_STATUS:
 732                 switch (data->tx_status.type) {
 733                 case WLAN_FC_TYPE_MGMT:
 734                         hostapd_mgmt_tx_cb(hapd, data->tx_status.data,
 735                                            data->tx_status.data_len,
 736                                            data->tx_status.stype,
 737                                            data->tx_status.ack);
 738                         break;
 739                 case WLAN_FC_TYPE_DATA:
 740                         hostapd_tx_status(hapd, data->tx_status.dst,
 741                                           data->tx_status.data,
 742                                           data->tx_status.data_len,
 743                                           data->tx_status.ack);
 744                         break;
 745                 }
 746                 break;
 747         case EVENT_EAPOL_TX_STATUS:
 748                 hostapd_eapol_tx_status(hapd, data->eapol_tx_status.dst,
 749                                         data->eapol_tx_status.data,
 750                                         data->eapol_tx_status.data_len,
 751                                         data->eapol_tx_status.ack);
 752                 break;
 753         case EVENT_DRIVER_CLIENT_POLL_OK:
 754                 hostapd_client_poll_ok(hapd, data->client_poll.addr);
 755                 break;
 756         case EVENT_RX_FROM_UNKNOWN:
 757                 hostapd_rx_from_unknown_sta(hapd, data->rx_from_unknown.bssid,
 758                                             data->rx_from_unknown.addr,
 759                                             data->rx_from_unknown.wds);
 760                 break;
 761         case EVENT_RX_MGMT:
 762                 hostapd_mgmt_rx(hapd, &data->rx_mgmt);
 763                 break;
 764 #endif /* NEED_AP_MLME */
 765         case EVENT_RX_PROBE_REQ:
 766                 if (data->rx_probe_req.sa == NULL ||
 767                     data->rx_probe_req.ie == NULL)
 768                         break;
 769                 hostapd_probe_req_rx(hapd, data->rx_probe_req.sa,
 770                                      data->rx_probe_req.da,
 771                                      data->rx_probe_req.bssid,
 772                                      data->rx_probe_req.ie,
 773                                      data->rx_probe_req.ie_len,
 774                                      data->rx_probe_req.ssi_signal);
 775                 break;
 776         case EVENT_NEW_STA:
 777                 hostapd_event_new_sta(hapd, data->new_sta.addr);
 778                 break;
 779         case EVENT_EAPOL_RX:
 780                 hostapd_event_eapol_rx(hapd, data->eapol_rx.src,
 781                                        data->eapol_rx.data,
 782                                        data->eapol_rx.data_len);
 783                 break;
 784         case EVENT_ASSOC:
 785                 hostapd_notif_assoc(hapd, data->assoc_info.addr,
 786                                     data->assoc_info.req_ies,
 787                                     data->assoc_info.req_ies_len,
 788                                     data->assoc_info.reassoc);
 789                 break;
 790         case EVENT_DISASSOC:
 791                 if (data)
 792                         hostapd_notif_disassoc(hapd, data->disassoc_info.addr);
 793                 break;
 794         case EVENT_DEAUTH:
 795                 if (data)
 796                         hostapd_notif_disassoc(hapd, data->deauth_info.addr);
 797                 break;
 798         case EVENT_STATION_LOW_ACK:
 799                 if (!data)
 800                         break;
 801                 hostapd_event_sta_low_ack(hapd, data->low_ack.addr);
 802                 break;
 803         case EVENT_RX_ACTION:
 804                 if (data->rx_action.da == NULL || data->rx_action.sa == NULL ||
 805                     data->rx_action.bssid == NULL)
 806                         break;
 807 #ifdef NEED_AP_MLME
 808                 hostapd_rx_action(hapd, &data->rx_action);
 809 #endif /* NEED_AP_MLME */
 810                 hostapd_action_rx(hapd, &data->rx_action);
 811                 break;
 812         case EVENT_AUTH:
 813                 hostapd_notif_auth(hapd, &data->auth);
 814                 break;
 815         case EVENT_CH_SWITCH:
 816                 if (!data)
 817                         break;
 818                 hostapd_event_ch_switch(hapd, data->ch_switch.freq,
 819                                         data->ch_switch.ht_enabled,
 820                                         data->ch_switch.ch_offset);
 821                 break;
 822         default:
 823                 wpa_printf(MSG_DEBUG, "Unknown event %d", event);
 824                 break;
 825         }
 826 }
 827
 828 #endif /* HOSTAPD */