wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2010, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eapol_supp/eapol_supp_sm.h"
  19 #include "rsn_supp/wpa.h"
  20 #include "eloop.h"
  21 #include "config.h"
  22 #include "l2_packet/l2_packet.h"
  23 #include "wpa_supplicant_i.h"
  24 #include "driver_i.h"
  25 #include "pcsc_funcs.h"
  26 #include "rsn_supp/preauth.h"
  27 #include "rsn_supp/pmksa_cache.h"
  28 #include "common/wpa_ctrl.h"
  29 #include "eap_peer/eap.h"
  30 #include "ap/hostapd.h"
  31 #include "notify.h"
  32 #include "common/ieee802_11_defs.h"
  33 #include "blacklist.h"
  34 #include "wpas_glue.h"
  35 #include "wps_supplicant.h"
  36 #include "ibss_rsn.h"
  37 #include "sme.h"
  38 #include "bgscan.h"
  39 #include "ap.h"
  40 #include "bss.h"
  41 #include "mlme.h"
  42 #include "scan.h"
  43
  44
  45 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  46 {
  47         struct wpa_ssid *ssid, *old_ssid;
  48
  49         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  50                 return 0;
  51
  52         wpa_printf(MSG_DEBUG, "Select network based on association "
  53                    "information");
  54         ssid = wpa_supplicant_get_ssid(wpa_s);
  55         if (ssid == NULL) {
  56                 wpa_printf(MSG_INFO, "No network configuration found for the "
  57                            "current AP");
  58                 return -1;
  59         }
  60
  61         if (ssid->disabled) {
  62                 wpa_printf(MSG_DEBUG, "Selected network is disabled");
  63                 return -1;
  64         }
  65
  66         wpa_printf(MSG_DEBUG, "Network configuration found for the current "
  67                    "AP");
  68         if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
  69                               WPA_KEY_MGMT_WPA_NONE |
  70                               WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
  71                               WPA_KEY_MGMT_PSK_SHA256 |
  72                               WPA_KEY_MGMT_IEEE8021X_SHA256)) {
  73                 u8 wpa_ie[80];
  74                 size_t wpa_ie_len = sizeof(wpa_ie);
  75                 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
  76                                           wpa_ie, &wpa_ie_len);
  77         } else {
  78                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  79         }
  80
  81         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
  82                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
  83         old_ssid = wpa_s->current_ssid;
  84         wpa_s->current_ssid = ssid;
  85         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
  86         wpa_supplicant_initiate_eapol(wpa_s);
  87         if (old_ssid != wpa_s->current_ssid)
  88                 wpas_notify_network_changed(wpa_s);
  89
  90         return 0;
  91 }
  92
  93
  94 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
  95                                                 void *sock_ctx)
  96 {
  97         struct wpa_supplicant *wpa_s = eloop_ctx;
  98
  99         if (wpa_s->countermeasures) {
 100                 wpa_s->countermeasures = 0;
 101                 wpa_drv_set_countermeasures(wpa_s, 0);
 102                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 103                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 104         }
 105 }
 106
 107
 108 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 109 {
 110         int bssid_changed;
 111
 112         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 113                 return;
 114
 115         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 116         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 117         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 118         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 119         wpa_s->current_bss = NULL;
 120         if (bssid_changed)
 121                 wpas_notify_bssid_changed(wpa_s);
 122
 123         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 124         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 125         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 126                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 127         wpa_s->ap_ies_from_associnfo = 0;
 128 }
 129
 130
 131 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 132 {
 133         struct wpa_ie_data ie;
 134         int pmksa_set = -1;
 135         size_t i;
 136
 137         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 138             ie.pmkid == NULL)
 139                 return;
 140
 141         for (i = 0; i < ie.num_pmkid; i++) {
 142                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 143                                                     ie.pmkid + i * PMKID_LEN,
 144                                                     NULL, NULL, 0);
 145                 if (pmksa_set == 0) {
 146                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 147                         break;
 148                 }
 149         }
 150
 151         wpa_printf(MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from PMKSA "
 152                    "cache", pmksa_set == 0 ? "" : "not ");
 153 }
 154
 155
 156 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 157                                                  union wpa_event_data *data)
 158 {
 159         if (data == NULL) {
 160                 wpa_printf(MSG_DEBUG, "RSN: No data in PMKID candidate event");
 161                 return;
 162         }
 163         wpa_printf(MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 164                    " index=%d preauth=%d",
 165                    MAC2STR(data->pmkid_candidate.bssid),
 166                    data->pmkid_candidate.index,
 167                    data->pmkid_candidate.preauth);
 168
 169         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 170                             data->pmkid_candidate.index,
 171                             data->pmkid_candidate.preauth);
 172 }
 173
 174
 175 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 176 {
 177         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 178             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 179                 return 0;
 180
 181 #ifdef IEEE8021X_EAPOL
 182         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 183             wpa_s->current_ssid &&
 184             !(wpa_s->current_ssid->eapol_flags &
 185               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 186                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 187                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 188                  * plaintext or static WEP keys). */
 189                 return 0;
 190         }
 191 #endif /* IEEE8021X_EAPOL */
 192
 193         return 1;
 194 }
 195
 196
 197 /**
 198  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 199  * @wpa_s: pointer to wpa_supplicant data
 200  * @ssid: Configuration data for the network
 201  * Returns: 0 on success, -1 on failure
 202  *
 203  * This function is called when starting authentication with a network that is
 204  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 205  */
 206 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 207                               struct wpa_ssid *ssid)
 208 {
 209 #ifdef IEEE8021X_EAPOL
 210         int aka = 0, sim = 0, type;
 211
 212         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 213                 return 0;
 214
 215         if (ssid->eap.eap_methods == NULL) {
 216                 sim = 1;
 217                 aka = 1;
 218         } else {
 219                 struct eap_method_type *eap = ssid->eap.eap_methods;
 220                 while (eap->vendor != EAP_VENDOR_IETF ||
 221                        eap->method != EAP_TYPE_NONE) {
 222                         if (eap->vendor == EAP_VENDOR_IETF) {
 223                                 if (eap->method == EAP_TYPE_SIM)
 224                                         sim = 1;
 225                                 else if (eap->method == EAP_TYPE_AKA)
 226                                         aka = 1;
 227                         }
 228                         eap++;
 229                 }
 230         }
 231
 232         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 233                 sim = 0;
 234         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
 235                 aka = 0;
 236
 237         if (!sim && !aka) {
 238                 wpa_printf(MSG_DEBUG, "Selected network is configured to use "
 239                            "SIM, but neither EAP-SIM nor EAP-AKA are enabled");
 240                 return 0;
 241         }
 242
 243         wpa_printf(MSG_DEBUG, "Selected network is configured to use SIM "
 244                    "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 245         if (sim && aka)
 246                 type = SCARD_TRY_BOTH;
 247         else if (aka)
 248                 type = SCARD_USIM_ONLY;
 249         else
 250                 type = SCARD_GSM_SIM_ONLY;
 251
 252         wpa_s->scard = scard_init(type);
 253         if (wpa_s->scard == NULL) {
 254                 wpa_printf(MSG_WARNING, "Failed to initialize SIM "
 255                            "(pcsc-lite)");
 256                 return -1;
 257         }
 258         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 259         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 260 #endif /* IEEE8021X_EAPOL */
 261
 262         return 0;
 263 }
 264
 265
 266 #ifndef CONFIG_NO_SCAN_PROCESSING
 267 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
 268                                         struct wpa_ssid *ssid)
 269 {
 270         int i, privacy = 0;
 271
 272         if (ssid->mixed_cell)
 273                 return 1;
 274
 275 #ifdef CONFIG_WPS
 276         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 277                 return 1;
 278 #endif /* CONFIG_WPS */
 279
 280         for (i = 0; i < NUM_WEP_KEYS; i++) {
 281                 if (ssid->wep_key_len[i]) {
 282                         privacy = 1;
 283                         break;
 284                 }
 285         }
 286 #ifdef IEEE8021X_EAPOL
 287         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 288             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 289                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 290                 privacy = 1;
 291 #endif /* IEEE8021X_EAPOL */
 292
 293         if (bss->caps & IEEE80211_CAP_PRIVACY)
 294                 return privacy;
 295         return !privacy;
 296 }
 297
 298
 299 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 300                                          struct wpa_ssid *ssid,
 301                                          struct wpa_scan_res *bss)
 302 {
 303         struct wpa_ie_data ie;
 304         int proto_match = 0;
 305         const u8 *rsn_ie, *wpa_ie;
 306         int ret;
 307
 308         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 309         if (ret >= 0)
 310                 return ret;
 311
 312         rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 313         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 314                 proto_match++;
 315
 316                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 317                         wpa_printf(MSG_DEBUG, "   skip RSN IE - parse failed");
 318                         break;
 319                 }
 320                 if (!(ie.proto & ssid->proto)) {
 321                         wpa_printf(MSG_DEBUG, "   skip RSN IE - proto "
 322                                    "mismatch");
 323                         break;
 324                 }
 325
 326                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 327                         wpa_printf(MSG_DEBUG, "   skip RSN IE - PTK cipher "
 328                                    "mismatch");
 329                         break;
 330                 }
 331
 332                 if (!(ie.group_cipher & ssid->group_cipher)) {
 333                         wpa_printf(MSG_DEBUG, "   skip RSN IE - GTK cipher "
 334                                    "mismatch");
 335                         break;
 336                 }
 337
 338                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 339                         wpa_printf(MSG_DEBUG, "   skip RSN IE - key mgmt "
 340                                    "mismatch");
 341                         break;
 342                 }
 343
 344 #ifdef CONFIG_IEEE80211W
 345                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 346                     ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
 347                         wpa_printf(MSG_DEBUG, "   skip RSN IE - no mgmt frame "
 348                                    "protection");
 349                         break;
 350                 }
 351 #endif /* CONFIG_IEEE80211W */
 352
 353                 wpa_printf(MSG_DEBUG, "   selected based on RSN IE");
 354                 return 1;
 355         }
 356
 357         wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 358         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 359                 proto_match++;
 360
 361                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 362                         wpa_printf(MSG_DEBUG, "   skip WPA IE - parse failed");
 363                         break;
 364                 }
 365                 if (!(ie.proto & ssid->proto)) {
 366                         wpa_printf(MSG_DEBUG, "   skip WPA IE - proto "
 367                                    "mismatch");
 368                         break;
 369                 }
 370
 371                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 372                         wpa_printf(MSG_DEBUG, "   skip WPA IE - PTK cipher "
 373                                    "mismatch");
 374                         break;
 375                 }
 376
 377                 if (!(ie.group_cipher & ssid->group_cipher)) {
 378                         wpa_printf(MSG_DEBUG, "   skip WPA IE - GTK cipher "
 379                                    "mismatch");
 380                         break;
 381                 }
 382
 383                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 384                         wpa_printf(MSG_DEBUG, "   skip WPA IE - key mgmt "
 385                                    "mismatch");
 386                         break;
 387                 }
 388
 389                 wpa_printf(MSG_DEBUG, "   selected based on WPA IE");
 390                 return 1;
 391         }
 392
 393         if (proto_match == 0)
 394                 wpa_printf(MSG_DEBUG, "   skip - no WPA/RSN proto match");
 395
 396         return 0;
 397 }
 398
 399
 400 static int freq_allowed(int *freqs, int freq)
 401 {
 402         int i;
 403
 404         if (freqs == NULL)
 405                 return 1;
 406
 407         for (i = 0; freqs[i]; i++)
 408                 if (freqs[i] == freq)
 409                         return 1;
 410         return 0;
 411 }
 412
 413
 414 static struct wpa_bss *
 415 wpa_supplicant_select_bss_wpa(struct wpa_supplicant *wpa_s,
 416                               struct wpa_scan_results *scan_res,
 417                               struct wpa_ssid *group,
 418                               struct wpa_ssid **selected_ssid)
 419 {
 420         struct wpa_ssid *ssid;
 421         struct wpa_scan_res *bss;
 422         size_t i;
 423         struct wpa_blacklist *e;
 424         const u8 *ie;
 425
 426         wpa_printf(MSG_DEBUG, "Try to find WPA-enabled AP");
 427         for (i = 0; i < scan_res->num; i++) {
 428                 const u8 *ssid_;
 429                 u8 wpa_ie_len, rsn_ie_len, ssid_len;
 430                 bss = scan_res->res[i];
 431
 432                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 433                 ssid_ = ie ? ie + 2 : (u8 *) "";
 434                 ssid_len = ie ? ie[1] : 0;
 435
 436                 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 437                 wpa_ie_len = ie ? ie[1] : 0;
 438
 439                 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 440                 rsn_ie_len = ie ? ie[1] : 0;
 441
 442                 wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 443                            "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
 444                            (int) i, MAC2STR(bss->bssid),
 445                            wpa_ssid_txt(ssid_, ssid_len),
 446                            wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 447                            wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ?
 448                            " wps" : "");
 449
 450                 e = wpa_blacklist_get(wpa_s, bss->bssid);
 451                 if (e && e->count > 1) {
 452                         wpa_printf(MSG_DEBUG, "   skip - blacklisted");
 453                         continue;
 454                 }
 455
 456                 if (ssid_len == 0) {
 457                         wpa_printf(MSG_DEBUG, "   skip - SSID not known");
 458                         continue;
 459                 }
 460
 461                 if (wpa_ie_len == 0 && rsn_ie_len == 0) {
 462                         wpa_printf(MSG_DEBUG, "   skip - no WPA/RSN IE");
 463                         continue;
 464                 }
 465
 466                 for (ssid = group; ssid; ssid = ssid->pnext) {
 467                         int check_ssid = 1;
 468
 469                         if (ssid->disabled) {
 470                                 wpa_printf(MSG_DEBUG, "   skip - disabled");
 471                                 continue;
 472                         }
 473
 474 #ifdef CONFIG_WPS
 475                         if (ssid->ssid_len == 0 &&
 476                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 477                                 check_ssid = 0;
 478 #endif /* CONFIG_WPS */
 479
 480                         if (check_ssid &&
 481                             (ssid_len != ssid->ssid_len ||
 482                              os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
 483                                 wpa_printf(MSG_DEBUG, "   skip - "
 484                                            "SSID mismatch");
 485                                 continue;
 486                         }
 487
 488                         if (ssid->bssid_set &&
 489                             os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
 490                         {
 491                                 wpa_printf(MSG_DEBUG, "   skip - "
 492                                            "BSSID mismatch");
 493                                 continue;
 494                         }
 495
 496                         if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 497                                 continue;
 498
 499                         if (!freq_allowed(ssid->freq_list, bss->freq)) {
 500                                 wpa_printf(MSG_DEBUG, "   skip - "
 501                                            "frequency not allowed");
 502                                 continue;
 503                         }
 504
 505                         wpa_printf(MSG_DEBUG, "   selected WPA AP "
 506                                    MACSTR " ssid='%s'",
 507                                    MAC2STR(bss->bssid),
 508                                    wpa_ssid_txt(ssid_, ssid_len));
 509                         *selected_ssid = ssid;
 510                         return wpa_bss_get(wpa_s, bss->bssid, ssid_, ssid_len);
 511                 }
 512         }
 513
 514         return NULL;
 515 }
 516
 517
 518 static struct wpa_bss *
 519 wpa_supplicant_select_bss_non_wpa(struct wpa_supplicant *wpa_s,
 520                                   struct wpa_scan_results *scan_res,
 521                                   struct wpa_ssid *group,
 522                                   struct wpa_ssid **selected_ssid)
 523 {
 524         struct wpa_ssid *ssid;
 525         struct wpa_scan_res *bss;
 526         size_t i;
 527         struct wpa_blacklist *e;
 528         const u8 *ie;
 529
 530         wpa_printf(MSG_DEBUG, "Try to find non-WPA AP");
 531         for (i = 0; i < scan_res->num; i++) {
 532                 const u8 *ssid_;
 533                 u8 wpa_ie_len, rsn_ie_len, ssid_len;
 534                 bss = scan_res->res[i];
 535
 536                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 537                 ssid_ = ie ? ie + 2 : (u8 *) "";
 538                 ssid_len = ie ? ie[1] : 0;
 539
 540                 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 541                 wpa_ie_len = ie ? ie[1] : 0;
 542
 543                 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 544                 rsn_ie_len = ie ? ie[1] : 0;
 545
 546                 wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 547                            "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
 548                            (int) i, MAC2STR(bss->bssid),
 549                            wpa_ssid_txt(ssid_, ssid_len),
 550                            wpa_ie_len, rsn_ie_len, bss->caps);
 551
 552                 e = wpa_blacklist_get(wpa_s, bss->bssid);
 553                 if (e && e->count > 1) {
 554                         wpa_printf(MSG_DEBUG, "   skip - blacklisted");
 555                         continue;
 556                 }
 557
 558                 if (ssid_len == 0) {
 559                         wpa_printf(MSG_DEBUG, "   skip - SSID not known");
 560                         continue;
 561                 }
 562
 563                 for (ssid = group; ssid; ssid = ssid->pnext) {
 564                         int check_ssid = ssid->ssid_len != 0;
 565
 566                         if (ssid->disabled) {
 567                                 wpa_printf(MSG_DEBUG, "   skip - disabled");
 568                                 continue;
 569                         }
 570
 571 #ifdef CONFIG_WPS
 572                         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 573                                 /* Only allow wildcard SSID match if an AP
 574                                  * advertises active WPS operation that matches
 575                                  * with our mode. */
 576                                 check_ssid = 1;
 577                                 if (ssid->ssid_len == 0 &&
 578                                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid,
 579                                                               bss))
 580                                         check_ssid = 0;
 581                         }
 582 #endif /* CONFIG_WPS */
 583
 584                         if (check_ssid &&
 585                             (ssid_len != ssid->ssid_len ||
 586                              os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
 587                                 wpa_printf(MSG_DEBUG, "   skip - "
 588                                            "SSID mismatch");
 589                                 continue;
 590                         }
 591
 592                         if (ssid->bssid_set &&
 593                             os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
 594                         {
 595                                 wpa_printf(MSG_DEBUG, "   skip - "
 596                                            "BSSID mismatch");
 597                                 continue;
 598                         }
 599
 600                         if (!(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 601                             !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 602                             !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA))
 603                         {
 604                                 wpa_printf(MSG_DEBUG, "   skip - "
 605                                            "non-WPA network not allowed");
 606                                 continue;
 607                         }
 608
 609                         if ((ssid->key_mgmt &
 610                              (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
 611                               WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK |
 612                               WPA_KEY_MGMT_IEEE8021X_SHA256 |
 613                               WPA_KEY_MGMT_PSK_SHA256)) &&
 614                             (wpa_ie_len != 0 || rsn_ie_len != 0)) {
 615                                 wpa_printf(MSG_DEBUG, "   skip - "
 616                                            "WPA network");
 617                                 continue;
 618                         }
 619
 620                         if (!wpa_supplicant_match_privacy(bss, ssid)) {
 621                                 wpa_printf(MSG_DEBUG, "   skip - "
 622                                            "privacy mismatch");
 623                                 continue;
 624                         }
 625
 626                         if (bss->caps & IEEE80211_CAP_IBSS) {
 627                                 wpa_printf(MSG_DEBUG, "   skip - "
 628                                            "IBSS (adhoc) network");
 629                                 continue;
 630                         }
 631
 632                         if (!freq_allowed(ssid->freq_list, bss->freq)) {
 633                                 wpa_printf(MSG_DEBUG, "   skip - "
 634                                            "frequency not allowed");
 635                                 continue;
 636                         }
 637
 638                         wpa_printf(MSG_DEBUG, "   selected non-WPA AP "
 639                                    MACSTR " ssid='%s'",
 640                                    MAC2STR(bss->bssid),
 641                                    wpa_ssid_txt(ssid_, ssid_len));
 642                         *selected_ssid = ssid;
 643                         return wpa_bss_get(wpa_s, bss->bssid, ssid_, ssid_len);
 644                 }
 645         }
 646
 647         return NULL;
 648 }
 649
 650
 651 static struct wpa_bss *
 652 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 653                           struct wpa_scan_results *scan_res,
 654                           struct wpa_ssid *group,
 655                           struct wpa_ssid **selected_ssid)
 656 {
 657         struct wpa_bss *selected;
 658
 659         wpa_printf(MSG_DEBUG, "Selecting BSS from priority group %d",
 660                    group->priority);
 661
 662         /* First, try to find WPA-enabled AP */
 663         selected = wpa_supplicant_select_bss_wpa(wpa_s, scan_res, group,
 664                                                  selected_ssid);
 665         if (selected)
 666                 return selected;
 667
 668         /* If no WPA-enabled AP found, try to find non-WPA AP, if configuration
 669          * allows this. */
 670         return wpa_supplicant_select_bss_non_wpa(wpa_s, scan_res, group,
 671                                                  selected_ssid);
 672 }
 673
 674
 675 static struct wpa_bss *
 676 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 677                             struct wpa_scan_results *scan_res,
 678                             struct wpa_ssid **selected_ssid)
 679 {
 680         struct wpa_bss *selected = NULL;
 681         int prio;
 682
 683         while (selected == NULL) {
 684                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 685                         selected = wpa_supplicant_select_bss(
 686                                 wpa_s, scan_res, wpa_s->conf->pssid[prio],
 687                                 selected_ssid);
 688                         if (selected)
 689                                 break;
 690                 }
 691
 692                 if (selected == NULL && wpa_s->blacklist) {
 693                         wpa_printf(MSG_DEBUG, "No APs found - clear blacklist "
 694                                    "and try again");
 695                         wpa_blacklist_clear(wpa_s);
 696                         wpa_s->blacklist_cleared++;
 697                 } else if (selected == NULL)
 698                         break;
 699         }
 700
 701         return selected;
 702 }
 703
 704
 705 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 706                                         int timeout_sec, int timeout_usec)
 707 {
 708         if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1) {
 709                 /*
 710                  * Quick recovery if the initial scan results were not
 711                  * complete when fetched before the first scan request.
 712                  */
 713                 wpa_s->scan_res_tried++;
 714                 timeout_sec = 0;
 715                 timeout_usec = 0;
 716         } else if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
 717                 /*
 718                  * No networks are enabled; short-circuit request so
 719                  * we don't wait timeout seconds before transitioning
 720                  * to INACTIVE state.
 721                  */
 722                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 723                 return;
 724         }
 725         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 726 }
 727
 728
 729 void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 730                             struct wpa_bss *selected,
 731                             struct wpa_ssid *ssid)
 732 {
 733         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 734                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 735                         "PBC session overlap");
 736                 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 737                 return;
 738         }
 739
 740         /*
 741          * Do not trigger new association unless the BSSID has changed or if
 742          * reassociation is requested. If we are in process of associating with
 743          * the selected BSSID, do not trigger new attempt.
 744          */
 745         if (wpa_s->reassociate ||
 746             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 747              (wpa_s->wpa_state != WPA_ASSOCIATING ||
 748               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 749               0))) {
 750                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 751                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 752                         return;
 753                 }
 754                 wpa_supplicant_associate(wpa_s, selected, ssid);
 755         } else {
 756                 wpa_printf(MSG_DEBUG, "Already associated with the selected "
 757                            "AP");
 758         }
 759 }
 760
 761
 762 static struct wpa_ssid *
 763 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 764 {
 765         int prio;
 766         struct wpa_ssid *ssid;
 767
 768         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 769                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 770                 {
 771                         if (ssid->disabled)
 772                                 continue;
 773                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 774                             ssid->mode == IEEE80211_MODE_AP)
 775                                 return ssid;
 776                 }
 777         }
 778         return NULL;
 779 }
 780
 781
 782 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 783  * on BSS added and BSS changed events */
 784 static void wpa_supplicant_rsn_preauth_scan_results(
 785         struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res)
 786 {
 787         int i;
 788
 789         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 790                 return;
 791
 792         for (i = scan_res->num - 1; i >= 0; i--) {
 793                 const u8 *ssid, *rsn;
 794                 struct wpa_scan_res *r;
 795
 796                 r = scan_res->res[i];
 797
 798                 ssid = wpa_scan_get_ie(r, WLAN_EID_SSID);
 799                 if (ssid == NULL)
 800                         continue;
 801
 802                 rsn = wpa_scan_get_ie(r, WLAN_EID_RSN);
 803                 if (rsn == NULL)
 804                         continue;
 805
 806                 rsn_preauth_scan_result(wpa_s->wpa, r->bssid, ssid, rsn);
 807         }
 808
 809 }
 810
 811
 812 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
 813                                        struct wpa_bss *selected,
 814                                        struct wpa_ssid *ssid,
 815                                        struct wpa_scan_results *scan_res)
 816 {
 817         size_t i;
 818         struct wpa_scan_res *current_bss = NULL;
 819         int min_diff;
 820
 821         if (wpa_s->reassociate)
 822                 return 1; /* explicit request to reassociate */
 823         if (wpa_s->wpa_state < WPA_ASSOCIATED)
 824                 return 1; /* we are not associated; continue */
 825         if (wpa_s->current_ssid == NULL)
 826                 return 1; /* unknown current SSID */
 827         if (wpa_s->current_ssid != ssid)
 828                 return 1; /* different network block */
 829
 830         for (i = 0; i < scan_res->num; i++) {
 831                 struct wpa_scan_res *res = scan_res->res[i];
 832                 const u8 *ie;
 833                 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
 834                         continue;
 835
 836                 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 837                 if (ie == NULL)
 838                         continue;
 839                 if (ie[1] != wpa_s->current_ssid->ssid_len ||
 840                     os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
 841                         continue;
 842                 current_bss = res;
 843                 break;
 844         }
 845
 846         if (!current_bss)
 847                 return 1; /* current BSS not seen in scan results */
 848
 849         wpa_printf(MSG_DEBUG, "Considering within-ESS reassociation");
 850         wpa_printf(MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
 851                    MAC2STR(current_bss->bssid), current_bss->level);
 852         wpa_printf(MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
 853                    MAC2STR(selected->bssid), selected->level);
 854
 855         if (wpa_s->current_ssid->bssid_set &&
 856             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
 857             0) {
 858                 wpa_printf(MSG_DEBUG, "Allow reassociation - selected BSS has "
 859                            "preferred BSSID");
 860                 return 1;
 861         }
 862
 863         min_diff = 2;
 864         if (current_bss->level < 0) {
 865                 if (current_bss->level < -85)
 866                         min_diff = 1;
 867                 else if (current_bss->level < -80)
 868                         min_diff = 2;
 869                 else if (current_bss->level < -75)
 870                         min_diff = 3;
 871                 else if (current_bss->level < -70)
 872                         min_diff = 4;
 873                 else
 874                         min_diff = 5;
 875         }
 876         if (abs(current_bss->level - selected->level) < min_diff) {
 877                 wpa_printf(MSG_DEBUG, "Skip roam - too small difference in "
 878                            "signal level");
 879                 return 0;
 880         }
 881
 882         return 1;
 883 }
 884
 885
 886 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 887                                               union wpa_event_data *data)
 888 {
 889         struct wpa_bss *selected;
 890         struct wpa_ssid *ssid = NULL;
 891         struct wpa_scan_results *scan_res;
 892
 893         wpa_supplicant_notify_scanning(wpa_s, 0);
 894
 895         scan_res = wpa_supplicant_get_scan_results(wpa_s,
 896                                                    data ? &data->scan_info :
 897                                                    NULL, 1);
 898         if (scan_res == NULL) {
 899                 if (wpa_s->conf->ap_scan == 2)
 900                         return;
 901                 wpa_printf(MSG_DEBUG, "Failed to get scan results - try "
 902                            "scanning again");
 903                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
 904                 return;
 905         }
 906
 907         if (wpa_s->scan_res_handler) {
 908                 wpa_s->scan_res_handler(wpa_s, scan_res);
 909                 wpa_s->scan_res_handler = NULL;
 910                 wpa_scan_results_free(scan_res);
 911                 return;
 912         }
 913
 914         /*
 915          * Don't post the results if this was the initial cached
 916          * and there were no results.
 917          */
 918         if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1 &&
 919             scan_res->num == 0) {
 920                 wpa_msg(wpa_s, MSG_DEBUG, "Cached scan results are "
 921                         "empty - not posting");
 922         } else {
 923                 wpa_printf(MSG_DEBUG, "New scan results available");
 924                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
 925                 wpas_notify_scan_results(wpa_s);
 926         }
 927
 928         wpas_notify_scan_done(wpa_s, 1);
 929
 930         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
 931                 wpa_scan_results_free(scan_res);
 932                 return;
 933         }
 934
 935         if (wpa_s->disconnected) {
 936                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 937                 wpa_scan_results_free(scan_res);
 938                 return;
 939         }
 940
 941         if (bgscan_notify_scan(wpa_s, scan_res) == 1) {
 942                 wpa_scan_results_free(scan_res);
 943                 return;
 944         }
 945
 946         wpa_supplicant_rsn_preauth_scan_results(wpa_s, scan_res);
 947
 948         selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
 949
 950         if (selected) {
 951                 int skip;
 952                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
 953                                                     scan_res);
 954                 wpa_scan_results_free(scan_res);
 955                 if (skip)
 956                         return;
 957                 wpa_supplicant_connect(wpa_s, selected, ssid);
 958         } else {
 959                 wpa_scan_results_free(scan_res);
 960                 wpa_printf(MSG_DEBUG, "No suitable network found");
 961                 ssid = wpa_supplicant_pick_new_network(wpa_s);
 962                 if (ssid) {
 963                         wpa_printf(MSG_DEBUG, "Setup a new network");
 964                         wpa_supplicant_associate(wpa_s, NULL, ssid);
 965                 } else {
 966                         int timeout_sec = 5;
 967                         int timeout_usec = 0;
 968                         wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
 969                                                     timeout_usec);
 970                 }
 971         }
 972 }
 973 #endif /* CONFIG_NO_SCAN_PROCESSING */
 974
 975
 976 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
 977                                           union wpa_event_data *data)
 978 {
 979         int l, len, found = 0, wpa_found, rsn_found;
 980         const u8 *p;
 981
 982         wpa_printf(MSG_DEBUG, "Association info event");
 983         if (data->assoc_info.req_ies)
 984                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
 985                             data->assoc_info.req_ies_len);
 986         if (data->assoc_info.resp_ies)
 987                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
 988                             data->assoc_info.resp_ies_len);
 989         if (data->assoc_info.beacon_ies)
 990                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
 991                             data->assoc_info.beacon_ies,
 992                             data->assoc_info.beacon_ies_len);
 993         if (data->assoc_info.freq)
 994                 wpa_printf(MSG_DEBUG, "freq=%u MHz", data->assoc_info.freq);
 995
 996         p = data->assoc_info.req_ies;
 997         l = data->assoc_info.req_ies_len;
 998
 999         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1000         while (p && l >= 2) {
1001                 len = p[1] + 2;
1002                 if (len > l) {
1003                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1004                                     p, l);
1005                         break;
1006                 }
1007                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1008                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1009                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1010                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1011                                 break;
1012                         found = 1;
1013                         wpa_find_assoc_pmkid(wpa_s);
1014                         break;
1015                 }
1016                 l -= len;
1017                 p += len;
1018         }
1019         if (!found && data->assoc_info.req_ies)
1020                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1021
1022 #ifdef CONFIG_IEEE80211R
1023 #ifdef CONFIG_SME
1024         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1025                 u8 bssid[ETH_ALEN];
1026                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1027                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1028                                                  data->assoc_info.resp_ies,
1029                                                  data->assoc_info.resp_ies_len,
1030                                                  bssid) < 0) {
1031                         wpa_printf(MSG_DEBUG, "FT: Validation of "
1032                                    "Reassociation Response failed");
1033                         wpa_supplicant_deauthenticate(
1034                                 wpa_s, WLAN_REASON_INVALID_IE);
1035                         return -1;
1036                 }
1037         }
1038
1039         p = data->assoc_info.resp_ies;
1040         l = data->assoc_info.resp_ies_len;
1041
1042         /* Go through the IEs and make a copy of the MDIE, if present. */
1043         while (p && l >= 2) {
1044                 len = p[1] + 2;
1045                 if (len > l) {
1046                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1047                                     p, l);
1048                         break;
1049                 }
1050                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1051                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1052                         wpa_s->sme.ft_used = 1;
1053                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1054                                   MOBILITY_DOMAIN_ID_LEN);
1055                         break;
1056                 }
1057                 l -= len;
1058                 p += len;
1059         }
1060 #endif /* CONFIG_SME */
1061
1062         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1063                              data->assoc_info.resp_ies_len);
1064 #endif /* CONFIG_IEEE80211R */
1065
1066         /* WPA/RSN IE from Beacon/ProbeResp */
1067         p = data->assoc_info.beacon_ies;
1068         l = data->assoc_info.beacon_ies_len;
1069
1070         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1071          */
1072         wpa_found = rsn_found = 0;
1073         while (p && l >= 2) {
1074                 len = p[1] + 2;
1075                 if (len > l) {
1076                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1077                                     p, l);
1078                         break;
1079                 }
1080                 if (!wpa_found &&
1081                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1082                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1083                         wpa_found = 1;
1084                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1085                 }
1086
1087                 if (!rsn_found &&
1088                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1089                         rsn_found = 1;
1090                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1091                 }
1092
1093                 l -= len;
1094                 p += len;
1095         }
1096
1097         if (!wpa_found && data->assoc_info.beacon_ies)
1098                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1099         if (!rsn_found && data->assoc_info.beacon_ies)
1100                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1101         if (wpa_found || rsn_found)
1102                 wpa_s->ap_ies_from_associnfo = 1;
1103
1104         wpa_s->assoc_freq = data->assoc_info.freq;
1105
1106         return 0;
1107 }
1108
1109
1110 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1111                                        union wpa_event_data *data)
1112 {
1113         u8 bssid[ETH_ALEN];
1114         int ft_completed;
1115         int bssid_changed;
1116         struct wpa_driver_capa capa;
1117
1118 #ifdef CONFIG_AP
1119         if (wpa_s->ap_iface) {
1120                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1121                                     data->assoc_info.addr,
1122                                     data->assoc_info.req_ies,
1123                                     data->assoc_info.req_ies_len);
1124                 return;
1125         }
1126 #endif /* CONFIG_AP */
1127
1128         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1129         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1130                 return;
1131
1132         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1133         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1134                 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1135         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
1136             (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1137              os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
1138                 wpa_msg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1139                         MACSTR, MAC2STR(bssid));
1140                 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1141                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1142                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1143                 if (bssid_changed)
1144                         wpas_notify_bssid_changed(wpa_s);
1145
1146                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1147                         wpa_clear_keys(wpa_s, bssid);
1148                 }
1149                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1150                         wpa_supplicant_disassociate(
1151                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1152                         return;
1153                 }
1154                 if (wpa_s->current_ssid) {
1155                         struct wpa_bss *bss = NULL;
1156                         struct wpa_ssid *ssid = wpa_s->current_ssid;
1157                         if (ssid->ssid_len > 0)
1158                                 bss = wpa_bss_get(wpa_s, bssid,
1159                                                   ssid->ssid, ssid->ssid_len);
1160                         if (!bss)
1161                                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1162                         if (bss)
1163                                 wpa_s->current_bss = bss;
1164                 }
1165         }
1166
1167 #ifdef CONFIG_SME
1168         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1169         wpa_s->sme.prev_bssid_set = 1;
1170 #endif /* CONFIG_SME */
1171
1172         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1173         if (wpa_s->current_ssid) {
1174                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1175                  * initialized before association, but for other modes,
1176                  * initialize PC/SC here, if the current configuration needs
1177                  * smartcard or SIM/USIM. */
1178                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1179         }
1180         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1181         if (wpa_s->l2)
1182                 l2_packet_notify_auth_start(wpa_s->l2);
1183
1184         /*
1185          * Set portEnabled first to FALSE in order to get EAP state machine out
1186          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1187          * state machine may transit to AUTHENTICATING state based on obsolete
1188          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1189          * AUTHENTICATED without ever giving chance to EAP state machine to
1190          * reset the state.
1191          */
1192         if (!ft_completed) {
1193                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1194                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1195         }
1196         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1197                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1198         /* 802.1X::portControl = Auto */
1199         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1200         wpa_s->eapol_received = 0;
1201         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1202             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1203             (wpa_s->current_ssid &&
1204              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1205                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1206                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1207         } else if (!ft_completed) {
1208                 /* Timeout for receiving the first EAPOL packet */
1209                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1210         }
1211         wpa_supplicant_cancel_scan(wpa_s);
1212
1213         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1214             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1215                 /*
1216                  * We are done; the driver will take care of RSN 4-way
1217                  * handshake.
1218                  */
1219                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1220                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1221                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1222                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1223         }
1224
1225         if (wpa_s->pending_eapol_rx) {
1226                 struct os_time now, age;
1227                 os_get_time(&now);
1228                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1229                 if (age.sec == 0 && age.usec < 100000 &&
1230                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1231                     0) {
1232                         wpa_printf(MSG_DEBUG, "Process pending EAPOL frame "
1233                                    "that was received just before association "
1234                                    "notification");
1235                         wpa_supplicant_rx_eapol(
1236                                 wpa_s, wpa_s->pending_eapol_rx_src,
1237                                 wpabuf_head(wpa_s->pending_eapol_rx),
1238                                 wpabuf_len(wpa_s->pending_eapol_rx));
1239                 }
1240                 wpabuf_free(wpa_s->pending_eapol_rx);
1241                 wpa_s->pending_eapol_rx = NULL;
1242         }
1243
1244 #ifdef CONFIG_BGSCAN
1245         if (wpa_s->current_ssid != wpa_s->bgscan_ssid) {
1246                 bgscan_deinit(wpa_s);
1247                 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
1248                         if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
1249                                 wpa_printf(MSG_DEBUG, "Failed to initialize "
1250                                            "bgscan");
1251                                 /*
1252                                  * Live without bgscan; it is only used as a
1253                                  * roaming optimization, so the initial
1254                                  * connection is not affected.
1255                                  */
1256                         } else
1257                                 wpa_s->bgscan_ssid = wpa_s->current_ssid;
1258                 } else
1259                         wpa_s->bgscan_ssid = NULL;
1260         }
1261 #endif /* CONFIG_BGSCAN */
1262
1263         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1264              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1265             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1266             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1267                 /* Set static WEP keys again */
1268                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1269         }
1270 }
1271
1272
1273 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1274                                           u16 reason_code)
1275 {
1276         const u8 *bssid;
1277 #ifdef CONFIG_SME
1278         int authenticating;
1279         u8 prev_pending_bssid[ETH_ALEN];
1280
1281         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1282         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1283 #endif /* CONFIG_SME */
1284
1285         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1286                 /*
1287                  * At least Host AP driver and a Prism3 card seemed to be
1288                  * generating streams of disconnected events when configuring
1289                  * IBSS for WPA-None. Ignore them for now.
1290                  */
1291                 wpa_printf(MSG_DEBUG, "Disconnect event - ignore in "
1292                            "IBSS/WPA-None mode");
1293                 return;
1294         }
1295
1296         if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1297             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1298                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1299                         "pre-shared key may be incorrect");
1300         }
1301         if (wpa_s->wpa_state >= WPA_ASSOCIATED)
1302                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
1303         bssid = wpa_s->bssid;
1304         if (is_zero_ether_addr(bssid))
1305                 bssid = wpa_s->pending_bssid;
1306         wpa_blacklist_add(wpa_s, bssid);
1307         wpa_sm_notify_disassoc(wpa_s->wpa);
1308         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1309                 " reason=%d",
1310                 MAC2STR(bssid), reason_code);
1311         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1312                 wpa_printf(MSG_DEBUG, "Disconnect event - remove keys");
1313                 wpa_s->keys_cleared = 0;
1314                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1315         }
1316         wpa_supplicant_mark_disassoc(wpa_s);
1317         bgscan_deinit(wpa_s);
1318         wpa_s->bgscan_ssid = NULL;
1319 #ifdef CONFIG_SME
1320         if (authenticating &&
1321             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
1322                 /*
1323                  * mac80211-workaround to force deauth on failed auth cmd,
1324                  * requires us to remain in authenticating state to allow the
1325                  * second authentication attempt to be continued properly.
1326                  */
1327                 wpa_printf(MSG_DEBUG, "SME: Allow pending authentication to "
1328                            "proceed after disconnection event");
1329                 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1330                 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1331         }
1332 #endif /* CONFIG_SME */
1333 }
1334
1335
1336 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1337 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
1338                                                     void *sock_ctx)
1339 {
1340         struct wpa_supplicant *wpa_s = eloop_ctx;
1341
1342         if (!wpa_s->pending_mic_error_report)
1343                 return;
1344
1345         wpa_printf(MSG_DEBUG, "WPA: Sending pending MIC error report");
1346         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1347         wpa_s->pending_mic_error_report = 0;
1348 }
1349 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1350
1351
1352 static void
1353 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1354                                          union wpa_event_data *data)
1355 {
1356         int pairwise;
1357         struct os_time t;
1358
1359         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1360         pairwise = (data && data->michael_mic_failure.unicast);
1361         os_get_time(&t);
1362         if ((wpa_s->last_michael_mic_error &&
1363              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1364             wpa_s->pending_mic_error_report) {
1365                 if (wpa_s->pending_mic_error_report) {
1366                         /*
1367                          * Send the pending MIC error report immediately since
1368                          * we are going to start countermeasures and AP better
1369                          * do the same.
1370                          */
1371                         wpa_sm_key_request(wpa_s->wpa, 1,
1372                                            wpa_s->pending_mic_error_pairwise);
1373                 }
1374
1375                 /* Send the new MIC error report immediately since we are going
1376                  * to start countermeasures and AP better do the same.
1377                  */
1378                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1379
1380                 /* initialize countermeasures */
1381                 wpa_s->countermeasures = 1;
1382                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1383
1384                 /*
1385                  * Need to wait for completion of request frame. We do not get
1386                  * any callback for the message completion, so just wait a
1387                  * short while and hope for the best. */
1388                 os_sleep(0, 10000);
1389
1390                 wpa_drv_set_countermeasures(wpa_s, 1);
1391                 wpa_supplicant_deauthenticate(wpa_s,
1392                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
1393                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1394                                      wpa_s, NULL);
1395                 eloop_register_timeout(60, 0,
1396                                        wpa_supplicant_stop_countermeasures,
1397                                        wpa_s, NULL);
1398                 /* TODO: mark the AP rejected for 60 second. STA is
1399                  * allowed to associate with another AP.. */
1400         } else {
1401 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1402                 if (wpa_s->mic_errors_seen) {
1403                         /*
1404                          * Reduce the effectiveness of Michael MIC error
1405                          * reports as a means for attacking against TKIP if
1406                          * more than one MIC failure is noticed with the same
1407                          * PTK. We delay the transmission of the reports by a
1408                          * random time between 0 and 60 seconds in order to
1409                          * force the attacker wait 60 seconds before getting
1410                          * the information on whether a frame resulted in a MIC
1411                          * failure.
1412                          */
1413                         u8 rval[4];
1414                         int sec;
1415
1416                         if (os_get_random(rval, sizeof(rval)) < 0)
1417                                 sec = os_random() % 60;
1418                         else
1419                                 sec = WPA_GET_BE32(rval) % 60;
1420                         wpa_printf(MSG_DEBUG, "WPA: Delay MIC error report %d "
1421                                    "seconds", sec);
1422                         wpa_s->pending_mic_error_report = 1;
1423                         wpa_s->pending_mic_error_pairwise = pairwise;
1424                         eloop_cancel_timeout(
1425                                 wpa_supplicant_delayed_mic_error_report,
1426                                 wpa_s, NULL);
1427                         eloop_register_timeout(
1428                                 sec, os_random() % 1000000,
1429                                 wpa_supplicant_delayed_mic_error_report,
1430                                 wpa_s, NULL);
1431                 } else {
1432                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1433                 }
1434 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1435                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1436 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1437         }
1438         wpa_s->last_michael_mic_error = t.sec;
1439         wpa_s->mic_errors_seen++;
1440 }
1441
1442
1443 #ifdef CONFIG_TERMINATE_ONLASTIF
1444 static int any_interfaces(struct wpa_supplicant *head)
1445 {
1446         struct wpa_supplicant *wpa_s;
1447
1448         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1449                 if (!wpa_s->interface_removed)
1450                         return 1;
1451         return 0;
1452 }
1453 #endif /* CONFIG_TERMINATE_ONLASTIF */
1454
1455
1456 static void
1457 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1458                                       union wpa_event_data *data)
1459 {
1460         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1461                 return;
1462
1463         switch (data->interface_status.ievent) {
1464         case EVENT_INTERFACE_ADDED:
1465                 if (!wpa_s->interface_removed)
1466                         break;
1467                 wpa_s->interface_removed = 0;
1468                 wpa_printf(MSG_DEBUG, "Configured interface was added.");
1469                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1470                         wpa_printf(MSG_INFO, "Failed to initialize the driver "
1471                                    "after interface was added.");
1472                 }
1473                 break;
1474         case EVENT_INTERFACE_REMOVED:
1475                 wpa_printf(MSG_DEBUG, "Configured interface was removed.");
1476                 wpa_s->interface_removed = 1;
1477                 wpa_supplicant_mark_disassoc(wpa_s);
1478                 l2_packet_deinit(wpa_s->l2);
1479                 wpa_s->l2 = NULL;
1480 #ifdef CONFIG_TERMINATE_ONLASTIF
1481                 /* check if last interface */
1482                 if (!any_interfaces(wpa_s->global->ifaces))
1483                         eloop_terminate();
1484 #endif /* CONFIG_TERMINATE_ONLASTIF */
1485                 break;
1486         }
1487 }
1488
1489
1490 #ifdef CONFIG_PEERKEY
1491 static void
1492 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1493                               union wpa_event_data *data)
1494 {
1495         if (data == NULL)
1496                 return;
1497         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1498 }
1499 #endif /* CONFIG_PEERKEY */
1500
1501
1502 #ifdef CONFIG_IEEE80211R
1503 static void
1504 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1505                                  union wpa_event_data *data)
1506 {
1507         if (data == NULL)
1508                 return;
1509
1510         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1511                                     data->ft_ies.ies_len,
1512                                     data->ft_ies.ft_action,
1513                                     data->ft_ies.target_ap,
1514                                     data->ft_ies.ric_ies,
1515                                     data->ft_ies.ric_ies_len) < 0) {
1516                 /* TODO: prevent MLME/driver from trying to associate? */
1517         }
1518 }
1519 #endif /* CONFIG_IEEE80211R */
1520
1521
1522 #ifdef CONFIG_IBSS_RSN
1523 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1524                                                 union wpa_event_data *data)
1525 {
1526         if (data == NULL)
1527                 return;
1528         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1529 }
1530 #endif /* CONFIG_IBSS_RSN */
1531
1532
1533 #ifdef CONFIG_IEEE80211R
1534 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1535                          size_t len)
1536 {
1537         const u8 *sta_addr, *target_ap_addr;
1538         u16 status;
1539
1540         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1541         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1542                 return; /* only SME case supported for now */
1543         if (len < 1 + 2 * ETH_ALEN + 2)
1544                 return;
1545         if (data[0] != 2)
1546                 return; /* Only FT Action Response is supported for now */
1547         sta_addr = data + 1;
1548         target_ap_addr = data + 1 + ETH_ALEN;
1549         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1550         wpa_printf(MSG_DEBUG, "FT: Received FT Action Response: STA " MACSTR
1551                    " TargetAP " MACSTR " status %u",
1552                    MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1553
1554         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1555                 wpa_printf(MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1556                            " in FT Action Response", MAC2STR(sta_addr));
1557                 return;
1558         }
1559
1560         if (status) {
1561                 wpa_printf(MSG_DEBUG, "FT: FT Action Response indicates "
1562                            "failure (status code %d)", status);
1563                 /* TODO: report error to FT code(?) */
1564                 return;
1565         }
1566
1567         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1568                                     len - (1 + 2 * ETH_ALEN + 2), 1,
1569                                     target_ap_addr, NULL, 0) < 0)
1570                 return;
1571
1572 #ifdef CONFIG_SME
1573         {
1574                 struct wpa_bss *bss;
1575                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1576                 if (bss)
1577                         wpa_s->sme.freq = bss->freq;
1578                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1579                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1580                               WLAN_AUTH_FT);
1581         }
1582 #endif /* CONFIG_SME */
1583 }
1584 #endif /* CONFIG_IEEE80211R */
1585
1586
1587 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1588                           union wpa_event_data *data)
1589 {
1590         struct wpa_supplicant *wpa_s = ctx;
1591         u16 reason_code = 0;
1592
1593         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
1594             event != EVENT_INTERFACE_ENABLED &&
1595             event != EVENT_INTERFACE_STATUS) {
1596                 wpa_printf(MSG_DEBUG, "Ignore event %d while interface is "
1597                            "disabled", event);
1598                 return;
1599         }
1600
1601         switch (event) {
1602         case EVENT_AUTH:
1603                 sme_event_auth(wpa_s, data);
1604                 break;
1605         case EVENT_ASSOC:
1606                 wpa_supplicant_event_assoc(wpa_s, data);
1607                 break;
1608         case EVENT_DISASSOC:
1609                 wpa_printf(MSG_DEBUG, "Disassociation notification");
1610 #ifdef CONFIG_AP
1611                 if (wpa_s->ap_iface && data) {
1612                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1613                                                data->disassoc_info.addr);
1614                         break;
1615                 }
1616 #endif /* CONFIG_AP */
1617                 if (data)
1618                         reason_code = data->deauth_info.reason_code;
1619                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1620                         sme_event_disassoc(wpa_s, data);
1621                 /* fall through */
1622         case EVENT_DEAUTH:
1623                 if (event == EVENT_DEAUTH) {
1624                         wpa_printf(MSG_DEBUG, "Deauthentication notification");
1625                         if (data)
1626                                 reason_code = data->deauth_info.reason_code;
1627                 }
1628 #ifdef CONFIG_AP
1629                 if (wpa_s->ap_iface && data) {
1630                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1631                                                data->deauth_info.addr);
1632                         break;
1633                 }
1634 #endif /* CONFIG_AP */
1635                 wpa_supplicant_event_disassoc(wpa_s, reason_code);
1636                 break;
1637         case EVENT_MICHAEL_MIC_FAILURE:
1638                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
1639                 break;
1640 #ifndef CONFIG_NO_SCAN_PROCESSING
1641         case EVENT_SCAN_RESULTS:
1642                 wpa_supplicant_event_scan_results(wpa_s, data);
1643                 break;
1644 #endif /* CONFIG_NO_SCAN_PROCESSING */
1645         case EVENT_ASSOCINFO:
1646                 wpa_supplicant_event_associnfo(wpa_s, data);
1647                 break;
1648         case EVENT_INTERFACE_STATUS:
1649                 wpa_supplicant_event_interface_status(wpa_s, data);
1650                 break;
1651         case EVENT_PMKID_CANDIDATE:
1652                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
1653                 break;
1654 #ifdef CONFIG_PEERKEY
1655         case EVENT_STKSTART:
1656                 wpa_supplicant_event_stkstart(wpa_s, data);
1657                 break;
1658 #endif /* CONFIG_PEERKEY */
1659 #ifdef CONFIG_IEEE80211R
1660         case EVENT_FT_RESPONSE:
1661                 wpa_supplicant_event_ft_response(wpa_s, data);
1662                 break;
1663 #endif /* CONFIG_IEEE80211R */
1664 #ifdef CONFIG_IBSS_RSN
1665         case EVENT_IBSS_RSN_START:
1666                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
1667                 break;
1668 #endif /* CONFIG_IBSS_RSN */
1669         case EVENT_ASSOC_REJECT:
1670                 sme_event_assoc_reject(wpa_s, data);
1671                 break;
1672         case EVENT_AUTH_TIMED_OUT:
1673                 sme_event_auth_timed_out(wpa_s, data);
1674                 break;
1675         case EVENT_ASSOC_TIMED_OUT:
1676                 sme_event_assoc_timed_out(wpa_s, data);
1677                 break;
1678 #ifdef CONFIG_AP
1679         case EVENT_TX_STATUS:
1680                 if (wpa_s->ap_iface == NULL)
1681                         break;
1682                 switch (data->tx_status.type) {
1683                 case WLAN_FC_TYPE_MGMT:
1684                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
1685                                       data->tx_status.data_len,
1686                                       data->tx_status.stype,
1687                                       data->tx_status.ack);
1688                         break;
1689                 case WLAN_FC_TYPE_DATA:
1690                         ap_tx_status(wpa_s, data->tx_status.dst,
1691                                      data->tx_status.data,
1692                                      data->tx_status.data_len,
1693                                      data->tx_status.ack);
1694                         break;
1695                 }
1696                 break;
1697         case EVENT_RX_FROM_UNKNOWN:
1698                 if (wpa_s->ap_iface == NULL)
1699                         break;
1700                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame,
1701                                        data->rx_from_unknown.len);
1702                 break;
1703         case EVENT_RX_MGMT:
1704                 if (wpa_s->ap_iface == NULL)
1705                         break;
1706                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
1707                 break;
1708 #endif /* CONFIG_AP */
1709         case EVENT_RX_ACTION:
1710                 wpa_printf(MSG_DEBUG, "Received Action frame: SA=" MACSTR
1711                            " Category=%u DataLen=%d freq=%d MHz",
1712                            MAC2STR(data->rx_action.sa),
1713                            data->rx_action.category, (int) data->rx_action.len,
1714                            data->rx_action.freq);
1715 #ifdef CONFIG_IEEE80211R
1716                 if (data->rx_action.category == WLAN_ACTION_FT) {
1717                         ft_rx_action(wpa_s, data->rx_action.data,
1718                                      data->rx_action.len);
1719                         break;
1720                 }
1721 #endif /* CONFIG_IEEE80211R */
1722                 break;
1723 #ifdef CONFIG_CLIENT_MLME
1724         case EVENT_MLME_RX: {
1725                 struct ieee80211_rx_status rx_status;
1726                 os_memset(&rx_status, 0, sizeof(rx_status));
1727                 rx_status.freq = data->mlme_rx.freq;
1728                 rx_status.channel = data->mlme_rx.channel;
1729                 rx_status.ssi = data->mlme_rx.ssi;
1730                 ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len,
1731                                  &rx_status);
1732                 break;
1733         }
1734 #endif /* CONFIG_CLIENT_MLME */
1735         case EVENT_EAPOL_RX:
1736                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
1737                                         data->eapol_rx.data,
1738                                         data->eapol_rx.data_len);
1739                 break;
1740         case EVENT_SIGNAL_CHANGE:
1741                 bgscan_notify_signal_change(
1742                         wpa_s, data->signal_change.above_threshold);
1743                 break;
1744         case EVENT_INTERFACE_ENABLED:
1745                 wpa_printf(MSG_DEBUG, "Interface was enabled");
1746                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
1747                         wpa_supplicant_set_state(wpa_s,
1748                                                  WPA_DISCONNECTED);
1749                         wpa_supplicant_req_scan(wpa_s, 0, 0);
1750                 }
1751                 break;
1752         case EVENT_INTERFACE_DISABLED:
1753                 wpa_printf(MSG_DEBUG, "Interface was disabled");
1754                 wpa_supplicant_mark_disassoc(wpa_s);
1755                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
1756                 break;
1757         default:
1758                 wpa_printf(MSG_INFO, "Unknown event %d", event);
1759                 break;
1760         }
1761 }