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         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 113         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 114         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 115         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 116         wpa_s->current_bss = NULL;
 117         if (bssid_changed)
 118                 wpas_notify_bssid_changed(wpa_s);
 119
 120         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 121         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 122         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 123                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 124         wpa_s->ap_ies_from_associnfo = 0;
 125 }
 126
 127
 128 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 129 {
 130         struct wpa_ie_data ie;
 131         int pmksa_set = -1;
 132         size_t i;
 133
 134         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 135             ie.pmkid == NULL)
 136                 return;
 137
 138         for (i = 0; i < ie.num_pmkid; i++) {
 139                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 140                                                     ie.pmkid + i * PMKID_LEN,
 141                                                     NULL, NULL, 0);
 142                 if (pmksa_set == 0) {
 143                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 144                         break;
 145                 }
 146         }
 147
 148         wpa_printf(MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from PMKSA "
 149                    "cache", pmksa_set == 0 ? "" : "not ");
 150 }
 151
 152
 153 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 154                                                  union wpa_event_data *data)
 155 {
 156         if (data == NULL) {
 157                 wpa_printf(MSG_DEBUG, "RSN: No data in PMKID candidate event");
 158                 return;
 159         }
 160         wpa_printf(MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 161                    " index=%d preauth=%d",
 162                    MAC2STR(data->pmkid_candidate.bssid),
 163                    data->pmkid_candidate.index,
 164                    data->pmkid_candidate.preauth);
 165
 166         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 167                             data->pmkid_candidate.index,
 168                             data->pmkid_candidate.preauth);
 169 }
 170
 171
 172 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 173 {
 174         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 175             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 176                 return 0;
 177
 178 #ifdef IEEE8021X_EAPOL
 179         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 180             wpa_s->current_ssid &&
 181             !(wpa_s->current_ssid->eapol_flags &
 182               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 183                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 184                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 185                  * plaintext or static WEP keys). */
 186                 return 0;
 187         }
 188 #endif /* IEEE8021X_EAPOL */
 189
 190         return 1;
 191 }
 192
 193
 194 /**
 195  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 196  * @wpa_s: pointer to wpa_supplicant data
 197  * @ssid: Configuration data for the network
 198  * Returns: 0 on success, -1 on failure
 199  *
 200  * This function is called when starting authentication with a network that is
 201  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 202  */
 203 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 204                               struct wpa_ssid *ssid)
 205 {
 206 #ifdef IEEE8021X_EAPOL
 207         int aka = 0, sim = 0, type;
 208
 209         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 210                 return 0;
 211
 212         if (ssid->eap.eap_methods == NULL) {
 213                 sim = 1;
 214                 aka = 1;
 215         } else {
 216                 struct eap_method_type *eap = ssid->eap.eap_methods;
 217                 while (eap->vendor != EAP_VENDOR_IETF ||
 218                        eap->method != EAP_TYPE_NONE) {
 219                         if (eap->vendor == EAP_VENDOR_IETF) {
 220                                 if (eap->method == EAP_TYPE_SIM)
 221                                         sim = 1;
 222                                 else if (eap->method == EAP_TYPE_AKA)
 223                                         aka = 1;
 224                         }
 225                         eap++;
 226                 }
 227         }
 228
 229         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 230                 sim = 0;
 231         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
 232                 aka = 0;
 233
 234         if (!sim && !aka) {
 235                 wpa_printf(MSG_DEBUG, "Selected network is configured to use "
 236                            "SIM, but neither EAP-SIM nor EAP-AKA are enabled");
 237                 return 0;
 238         }
 239
 240         wpa_printf(MSG_DEBUG, "Selected network is configured to use SIM "
 241                    "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 242         if (sim && aka)
 243                 type = SCARD_TRY_BOTH;
 244         else if (aka)
 245                 type = SCARD_USIM_ONLY;
 246         else
 247                 type = SCARD_GSM_SIM_ONLY;
 248
 249         wpa_s->scard = scard_init(type);
 250         if (wpa_s->scard == NULL) {
 251                 wpa_printf(MSG_WARNING, "Failed to initialize SIM "
 252                            "(pcsc-lite)");
 253                 return -1;
 254         }
 255         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 256         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 257 #endif /* IEEE8021X_EAPOL */
 258
 259         return 0;
 260 }
 261
 262
 263 #ifndef CONFIG_NO_SCAN_PROCESSING
 264 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
 265                                         struct wpa_ssid *ssid)
 266 {
 267         int i, privacy = 0;
 268
 269         if (ssid->mixed_cell)
 270                 return 1;
 271
 272 #ifdef CONFIG_WPS
 273         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 274                 return 1;
 275 #endif /* CONFIG_WPS */
 276
 277         for (i = 0; i < NUM_WEP_KEYS; i++) {
 278                 if (ssid->wep_key_len[i]) {
 279                         privacy = 1;
 280                         break;
 281                 }
 282         }
 283 #ifdef IEEE8021X_EAPOL
 284         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 285             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 286                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 287                 privacy = 1;
 288 #endif /* IEEE8021X_EAPOL */
 289
 290         if (bss->caps & IEEE80211_CAP_PRIVACY)
 291                 return privacy;
 292         return !privacy;
 293 }
 294
 295
 296 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 297                                          struct wpa_ssid *ssid,
 298                                          struct wpa_scan_res *bss)
 299 {
 300         struct wpa_ie_data ie;
 301         int proto_match = 0;
 302         const u8 *rsn_ie, *wpa_ie;
 303         int ret;
 304
 305         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 306         if (ret >= 0)
 307                 return ret;
 308
 309         rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 310         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 311                 proto_match++;
 312
 313                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 314                         wpa_printf(MSG_DEBUG, "   skip RSN IE - parse failed");
 315                         break;
 316                 }
 317                 if (!(ie.proto & ssid->proto)) {
 318                         wpa_printf(MSG_DEBUG, "   skip RSN IE - proto "
 319                                    "mismatch");
 320                         break;
 321                 }
 322
 323                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 324                         wpa_printf(MSG_DEBUG, "   skip RSN IE - PTK cipher "
 325                                    "mismatch");
 326                         break;
 327                 }
 328
 329                 if (!(ie.group_cipher & ssid->group_cipher)) {
 330                         wpa_printf(MSG_DEBUG, "   skip RSN IE - GTK cipher "
 331                                    "mismatch");
 332                         break;
 333                 }
 334
 335                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 336                         wpa_printf(MSG_DEBUG, "   skip RSN IE - key mgmt "
 337                                    "mismatch");
 338                         break;
 339                 }
 340
 341 #ifdef CONFIG_IEEE80211W
 342                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 343                     ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
 344                         wpa_printf(MSG_DEBUG, "   skip RSN IE - no mgmt frame "
 345                                    "protection");
 346                         break;
 347                 }
 348 #endif /* CONFIG_IEEE80211W */
 349
 350                 wpa_printf(MSG_DEBUG, "   selected based on RSN IE");
 351                 return 1;
 352         }
 353
 354         wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 355         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 356                 proto_match++;
 357
 358                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 359                         wpa_printf(MSG_DEBUG, "   skip WPA IE - parse failed");
 360                         break;
 361                 }
 362                 if (!(ie.proto & ssid->proto)) {
 363                         wpa_printf(MSG_DEBUG, "   skip WPA IE - proto "
 364                                    "mismatch");
 365                         break;
 366                 }
 367
 368                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 369                         wpa_printf(MSG_DEBUG, "   skip WPA IE - PTK cipher "
 370                                    "mismatch");
 371                         break;
 372                 }
 373
 374                 if (!(ie.group_cipher & ssid->group_cipher)) {
 375                         wpa_printf(MSG_DEBUG, "   skip WPA IE - GTK cipher "
 376                                    "mismatch");
 377                         break;
 378                 }
 379
 380                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 381                         wpa_printf(MSG_DEBUG, "   skip WPA IE - key mgmt "
 382                                    "mismatch");
 383                         break;
 384                 }
 385
 386                 wpa_printf(MSG_DEBUG, "   selected based on WPA IE");
 387                 return 1;
 388         }
 389
 390         if (proto_match == 0)
 391                 wpa_printf(MSG_DEBUG, "   skip - no WPA/RSN proto match");
 392
 393         return 0;
 394 }
 395
 396
 397 static int freq_allowed(int *freqs, int freq)
 398 {
 399         int i;
 400
 401         if (freqs == NULL)
 402                 return 1;
 403
 404         for (i = 0; freqs[i]; i++)
 405                 if (freqs[i] == freq)
 406                         return 1;
 407         return 0;
 408 }
 409
 410
 411 static struct wpa_bss *
 412 wpa_supplicant_select_bss_wpa(struct wpa_supplicant *wpa_s,
 413                               struct wpa_scan_results *scan_res,
 414                               struct wpa_ssid *group,
 415                               struct wpa_ssid **selected_ssid)
 416 {
 417         struct wpa_ssid *ssid;
 418         struct wpa_scan_res *bss;
 419         size_t i;
 420         struct wpa_blacklist *e;
 421         const u8 *ie;
 422
 423         wpa_printf(MSG_DEBUG, "Try to find WPA-enabled AP");
 424         for (i = 0; i < scan_res->num; i++) {
 425                 const u8 *ssid_;
 426                 u8 wpa_ie_len, rsn_ie_len, ssid_len;
 427                 bss = scan_res->res[i];
 428
 429                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 430                 ssid_ = ie ? ie + 2 : (u8 *) "";
 431                 ssid_len = ie ? ie[1] : 0;
 432
 433                 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 434                 wpa_ie_len = ie ? ie[1] : 0;
 435
 436                 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 437                 rsn_ie_len = ie ? ie[1] : 0;
 438
 439                 wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 440                            "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
 441                            (int) i, MAC2STR(bss->bssid),
 442                            wpa_ssid_txt(ssid_, ssid_len),
 443                            wpa_ie_len, rsn_ie_len, bss->caps);
 444
 445                 e = wpa_blacklist_get(wpa_s, bss->bssid);
 446                 if (e && e->count > 1) {
 447                         wpa_printf(MSG_DEBUG, "   skip - blacklisted");
 448                         continue;
 449                 }
 450
 451                 if (ssid_len == 0) {
 452                         wpa_printf(MSG_DEBUG, "   skip - SSID not known");
 453                         continue;
 454                 }
 455
 456                 if (wpa_ie_len == 0 && rsn_ie_len == 0) {
 457                         wpa_printf(MSG_DEBUG, "   skip - no WPA/RSN IE");
 458                         continue;
 459                 }
 460
 461                 for (ssid = group; ssid; ssid = ssid->pnext) {
 462                         int check_ssid = 1;
 463
 464                         if (ssid->disabled) {
 465                                 wpa_printf(MSG_DEBUG, "   skip - disabled");
 466                                 continue;
 467                         }
 468
 469 #ifdef CONFIG_WPS
 470                         if (ssid->ssid_len == 0 &&
 471                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 472                                 check_ssid = 0;
 473 #endif /* CONFIG_WPS */
 474
 475                         if (check_ssid &&
 476                             (ssid_len != ssid->ssid_len ||
 477                              os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
 478                                 wpa_printf(MSG_DEBUG, "   skip - "
 479                                            "SSID mismatch");
 480                                 continue;
 481                         }
 482
 483                         if (ssid->bssid_set &&
 484                             os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
 485                         {
 486                                 wpa_printf(MSG_DEBUG, "   skip - "
 487                                            "BSSID mismatch");
 488                                 continue;
 489                         }
 490
 491                         if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 492                                 continue;
 493
 494                         if (!freq_allowed(ssid->freq_list, bss->freq)) {
 495                                 wpa_printf(MSG_DEBUG, "   skip - "
 496                                            "frequency not allowed");
 497                                 continue;
 498                         }
 499
 500                         wpa_printf(MSG_DEBUG, "   selected WPA AP "
 501                                    MACSTR " ssid='%s'",
 502                                    MAC2STR(bss->bssid),
 503                                    wpa_ssid_txt(ssid_, ssid_len));
 504                         *selected_ssid = ssid;
 505                         return wpa_bss_get(wpa_s, bss->bssid, ssid_, ssid_len);
 506                 }
 507         }
 508
 509         return NULL;
 510 }
 511
 512
 513 static struct wpa_bss *
 514 wpa_supplicant_select_bss_non_wpa(struct wpa_supplicant *wpa_s,
 515                                   struct wpa_scan_results *scan_res,
 516                                   struct wpa_ssid *group,
 517                                   struct wpa_ssid **selected_ssid)
 518 {
 519         struct wpa_ssid *ssid;
 520         struct wpa_scan_res *bss;
 521         size_t i;
 522         struct wpa_blacklist *e;
 523         const u8 *ie;
 524
 525         wpa_printf(MSG_DEBUG, "Try to find non-WPA AP");
 526         for (i = 0; i < scan_res->num; i++) {
 527                 const u8 *ssid_;
 528                 u8 wpa_ie_len, rsn_ie_len, ssid_len;
 529                 bss = scan_res->res[i];
 530
 531                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 532                 ssid_ = ie ? ie + 2 : (u8 *) "";
 533                 ssid_len = ie ? ie[1] : 0;
 534
 535                 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 536                 wpa_ie_len = ie ? ie[1] : 0;
 537
 538                 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 539                 rsn_ie_len = ie ? ie[1] : 0;
 540
 541                 wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 542                            "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
 543                            (int) i, MAC2STR(bss->bssid),
 544                            wpa_ssid_txt(ssid_, ssid_len),
 545                            wpa_ie_len, rsn_ie_len, bss->caps);
 546
 547                 e = wpa_blacklist_get(wpa_s, bss->bssid);
 548                 if (e && e->count > 1) {
 549                         wpa_printf(MSG_DEBUG, "   skip - blacklisted");
 550                         continue;
 551                 }
 552
 553                 if (ssid_len == 0) {
 554                         wpa_printf(MSG_DEBUG, "   skip - SSID not known");
 555                         continue;
 556                 }
 557
 558                 for (ssid = group; ssid; ssid = ssid->pnext) {
 559                         int check_ssid = ssid->ssid_len != 0;
 560
 561                         if (ssid->disabled) {
 562                                 wpa_printf(MSG_DEBUG, "   skip - disabled");
 563                                 continue;
 564                         }
 565
 566 #ifdef CONFIG_WPS
 567                         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 568                                 /* Only allow wildcard SSID match if an AP
 569                                  * advertises active WPS operation that matches
 570                                  * with our mode. */
 571                                 check_ssid = 1;
 572                                 if (ssid->ssid_len == 0 &&
 573                                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid,
 574                                                               bss))
 575                                         check_ssid = 0;
 576                         }
 577 #endif /* CONFIG_WPS */
 578
 579                         if (check_ssid &&
 580                             (ssid_len != ssid->ssid_len ||
 581                              os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
 582                                 wpa_printf(MSG_DEBUG, "   skip - "
 583                                            "SSID mismatch");
 584                                 continue;
 585                         }
 586
 587                         if (ssid->bssid_set &&
 588                             os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
 589                         {
 590                                 wpa_printf(MSG_DEBUG, "   skip - "
 591                                            "BSSID mismatch");
 592                                 continue;
 593                         }
 594
 595                         if (!(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 596                             !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 597                             !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA))
 598                         {
 599                                 wpa_printf(MSG_DEBUG, "   skip - "
 600                                            "non-WPA network not allowed");
 601                                 continue;
 602                         }
 603
 604                         if ((ssid->key_mgmt &
 605                              (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
 606                               WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK |
 607                               WPA_KEY_MGMT_IEEE8021X_SHA256 |
 608                               WPA_KEY_MGMT_PSK_SHA256)) &&
 609                             (wpa_ie_len != 0 || rsn_ie_len != 0)) {
 610                                 wpa_printf(MSG_DEBUG, "   skip - "
 611                                            "WPA network");
 612                                 continue;
 613                         }
 614
 615                         if (!wpa_supplicant_match_privacy(bss, ssid)) {
 616                                 wpa_printf(MSG_DEBUG, "   skip - "
 617                                            "privacy mismatch");
 618                                 continue;
 619                         }
 620
 621                         if (bss->caps & IEEE80211_CAP_IBSS) {
 622                                 wpa_printf(MSG_DEBUG, "   skip - "
 623                                            "IBSS (adhoc) network");
 624                                 continue;
 625                         }
 626
 627                         if (!freq_allowed(ssid->freq_list, bss->freq)) {
 628                                 wpa_printf(MSG_DEBUG, "   skip - "
 629                                            "frequency not allowed");
 630                                 continue;
 631                         }
 632
 633                         wpa_printf(MSG_DEBUG, "   selected non-WPA AP "
 634                                    MACSTR " ssid='%s'",
 635                                    MAC2STR(bss->bssid),
 636                                    wpa_ssid_txt(ssid_, ssid_len));
 637                         *selected_ssid = ssid;
 638                         return wpa_bss_get(wpa_s, bss->bssid, ssid_, ssid_len);
 639                 }
 640         }
 641
 642         return NULL;
 643 }
 644
 645
 646 static struct wpa_bss *
 647 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 648                           struct wpa_scan_results *scan_res,
 649                           struct wpa_ssid *group,
 650                           struct wpa_ssid **selected_ssid)
 651 {
 652         struct wpa_bss *selected;
 653
 654         wpa_printf(MSG_DEBUG, "Selecting BSS from priority group %d",
 655                    group->priority);
 656
 657         /* First, try to find WPA-enabled AP */
 658         selected = wpa_supplicant_select_bss_wpa(wpa_s, scan_res, group,
 659                                                  selected_ssid);
 660         if (selected)
 661                 return selected;
 662
 663         /* If no WPA-enabled AP found, try to find non-WPA AP, if configuration
 664          * allows this. */
 665         return wpa_supplicant_select_bss_non_wpa(wpa_s, scan_res, group,
 666                                                  selected_ssid);
 667 }
 668
 669
 670 static struct wpa_bss *
 671 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 672                             struct wpa_scan_results *scan_res,
 673                             struct wpa_ssid **selected_ssid)
 674 {
 675         struct wpa_bss *selected = NULL;
 676         int prio;
 677
 678         while (selected == NULL) {
 679                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 680                         selected = wpa_supplicant_select_bss(
 681                                 wpa_s, scan_res, wpa_s->conf->pssid[prio],
 682                                 selected_ssid);
 683                         if (selected)
 684                                 break;
 685                 }
 686
 687                 if (selected == NULL && wpa_s->blacklist) {
 688                         wpa_printf(MSG_DEBUG, "No APs found - clear blacklist "
 689                                    "and try again");
 690                         wpa_blacklist_clear(wpa_s);
 691                         wpa_s->blacklist_cleared++;
 692                 } else if (selected == NULL)
 693                         break;
 694         }
 695
 696         return selected;
 697 }
 698
 699
 700 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 701                                         int timeout)
 702 {
 703         if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1) {
 704                 /*
 705                  * Quick recovery if the initial scan results were not
 706                  * complete when fetched before the first scan request.
 707                  */
 708                 wpa_s->scan_res_tried++;
 709                 timeout = 0;
 710         } else if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
 711                 /*
 712                  * No networks are enabled; short-circuit request so
 713                  * we don't wait timeout seconds before transitioning
 714                  * to INACTIVE state.
 715                  */
 716                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 717                 return;
 718         }
 719         wpa_supplicant_req_scan(wpa_s, timeout, 0);
 720 }
 721
 722
 723 static void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 724                                    struct wpa_bss *selected,
 725                                    struct wpa_ssid *ssid)
 726 {
 727         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 728                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 729                         "PBC session overlap");
 730                 wpa_supplicant_req_new_scan(wpa_s, 10);
 731                 return;
 732         }
 733
 734         /*
 735          * Do not trigger new association unless the BSSID has changed or if
 736          * reassociation is requested. If we are in process of associating with
 737          * the selected BSSID, do not trigger new attempt.
 738          */
 739         if (wpa_s->reassociate ||
 740             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 741              (wpa_s->wpa_state != WPA_ASSOCIATING ||
 742               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 743               0))) {
 744                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 745                         wpa_supplicant_req_new_scan(wpa_s, 10);
 746                         return;
 747                 }
 748                 wpa_supplicant_associate(wpa_s, selected, ssid);
 749         } else {
 750                 wpa_printf(MSG_DEBUG, "Already associated with the selected "
 751                            "AP");
 752         }
 753 }
 754
 755
 756 static struct wpa_ssid *
 757 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 758 {
 759         int prio;
 760         struct wpa_ssid *ssid;
 761
 762         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 763                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 764                 {
 765                         if (ssid->disabled)
 766                                 continue;
 767                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 768                             ssid->mode == IEEE80211_MODE_AP)
 769                                 return ssid;
 770                 }
 771         }
 772         return NULL;
 773 }
 774
 775
 776 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 777  * on BSS added and BSS changed events */
 778 static void wpa_supplicant_rsn_preauth_scan_results(
 779         struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res)
 780 {
 781         int i;
 782
 783         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 784                 return;
 785
 786         for (i = scan_res->num - 1; i >= 0; i--) {
 787                 const u8 *ssid, *rsn;
 788                 struct wpa_scan_res *r;
 789
 790                 r = scan_res->res[i];
 791
 792                 ssid = wpa_scan_get_ie(r, WLAN_EID_SSID);
 793                 if (ssid == NULL)
 794                         continue;
 795
 796                 rsn = wpa_scan_get_ie(r, WLAN_EID_RSN);
 797                 if (rsn == NULL)
 798                         continue;
 799
 800                 rsn_preauth_scan_result(wpa_s->wpa, r->bssid, ssid, rsn);
 801         }
 802
 803 }
 804
 805
 806 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
 807                                        struct wpa_bss *selected,
 808                                        struct wpa_ssid *ssid,
 809                                        struct wpa_scan_results *scan_res)
 810 {
 811         size_t i;
 812         struct wpa_scan_res *current_bss = NULL;
 813         int min_diff;
 814
 815         if (wpa_s->reassociate)
 816                 return 1; /* explicit request to reassociate */
 817         if (wpa_s->wpa_state < WPA_ASSOCIATED)
 818                 return 1; /* we are not associated; continue */
 819         if (wpa_s->current_ssid == NULL)
 820                 return 1; /* unknown current SSID */
 821         if (wpa_s->current_ssid != ssid)
 822                 return 1; /* different network block */
 823
 824         for (i = 0; i < scan_res->num; i++) {
 825                 struct wpa_scan_res *res = scan_res->res[i];
 826                 const u8 *ie;
 827                 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
 828                         continue;
 829
 830                 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 831                 if (ie == NULL)
 832                         continue;
 833                 if (ie[1] != wpa_s->current_ssid->ssid_len ||
 834                     os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
 835                         continue;
 836                 current_bss = res;
 837                 break;
 838         }
 839
 840         if (!current_bss)
 841                 return 1; /* current BSS not seen in scan results */
 842
 843         wpa_printf(MSG_DEBUG, "Considering within-ESS reassociation");
 844         wpa_printf(MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
 845                    MAC2STR(current_bss->bssid), current_bss->level);
 846         wpa_printf(MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
 847                    MAC2STR(selected->bssid), selected->level);
 848
 849         if (wpa_s->current_ssid->bssid_set &&
 850             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
 851             0) {
 852                 wpa_printf(MSG_DEBUG, "Allow reassociation - selected BSS has "
 853                            "preferred BSSID");
 854                 return 1;
 855         }
 856
 857         min_diff = 2;
 858         if (current_bss->level < 0) {
 859                 if (current_bss->level < -85)
 860                         min_diff = 1;
 861                 else if (current_bss->level < -80)
 862                         min_diff = 2;
 863                 else if (current_bss->level < -75)
 864                         min_diff = 3;
 865                 else if (current_bss->level < -70)
 866                         min_diff = 4;
 867                 else
 868                         min_diff = 5;
 869         }
 870         if (abs(current_bss->level - selected->level) < min_diff) {
 871                 wpa_printf(MSG_DEBUG, "Skip roam - too small difference in "
 872                            "signal level");
 873                 return 0;
 874         }
 875
 876         return 1;
 877 }
 878
 879
 880 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 881                                               union wpa_event_data *data)
 882 {
 883         struct wpa_bss *selected;
 884         struct wpa_ssid *ssid = NULL;
 885         struct wpa_scan_results *scan_res;
 886
 887         wpa_supplicant_notify_scanning(wpa_s, 0);
 888
 889         scan_res = wpa_supplicant_get_scan_results(wpa_s,
 890                                                    data ? &data->scan_info :
 891                                                    NULL, 1);
 892         if (scan_res == NULL) {
 893                 if (wpa_s->conf->ap_scan == 2)
 894                         return;
 895                 wpa_printf(MSG_DEBUG, "Failed to get scan results - try "
 896                            "scanning again");
 897                 wpa_supplicant_req_new_scan(wpa_s, 1);
 898                 return;
 899         }
 900
 901         /*
 902          * Don't post the results if this was the initial cached
 903          * and there were no results.
 904          */
 905         if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1 &&
 906             scan_res->num == 0) {
 907                 wpa_msg(wpa_s, MSG_DEBUG, "Cached scan results are "
 908                         "empty - not posting");
 909         } else {
 910                 wpa_printf(MSG_DEBUG, "New scan results available");
 911                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
 912                 wpas_notify_scan_results(wpa_s);
 913         }
 914
 915         wpas_notify_scan_done(wpa_s, 1);
 916
 917         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
 918                 wpa_scan_results_free(scan_res);
 919                 return;
 920         }
 921
 922         if (wpa_s->disconnected) {
 923                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 924                 wpa_scan_results_free(scan_res);
 925                 return;
 926         }
 927
 928         if (bgscan_notify_scan(wpa_s) == 1) {
 929                 wpa_scan_results_free(scan_res);
 930                 return;
 931         }
 932
 933         wpa_supplicant_rsn_preauth_scan_results(wpa_s, scan_res);
 934
 935         selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
 936
 937         if (selected) {
 938                 int skip;
 939                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
 940                                                     scan_res);
 941                 wpa_scan_results_free(scan_res);
 942                 if (skip)
 943                         return;
 944                 wpa_supplicant_connect(wpa_s, selected, ssid);
 945         } else {
 946                 wpa_scan_results_free(scan_res);
 947                 wpa_printf(MSG_DEBUG, "No suitable network found");
 948                 ssid = wpa_supplicant_pick_new_network(wpa_s);
 949                 if (ssid) {
 950                         wpa_printf(MSG_DEBUG, "Setup a new network");
 951                         wpa_supplicant_associate(wpa_s, NULL, ssid);
 952                 } else
 953                         wpa_supplicant_req_new_scan(wpa_s, 5);
 954         }
 955 }
 956 #endif /* CONFIG_NO_SCAN_PROCESSING */
 957
 958
 959 #ifdef CONFIG_IEEE80211R
 960 static void wpa_assoc_set_ft_params(struct wpa_supplicant *wpa_s,
 961                                     const u8 *ftie, const u8 *mdie)
 962 {
 963         const u8 *mobility_domain = NULL;
 964         const u8 *r0kh_id = NULL;
 965         size_t r0kh_id_len = 0;
 966         const u8 *r1kh_id = NULL;
 967         struct rsn_ftie *hdr;
 968         const u8 *pos, *end;
 969
 970         if (mdie == NULL || ftie == NULL)
 971                 return;
 972
 973         if (mdie[1] >= MOBILITY_DOMAIN_ID_LEN) {
 974                 mobility_domain = mdie + 2;
 975 #ifdef CONFIG_SME
 976                 wpa_s->sme.ft_used = 1;
 977                 os_memcpy(wpa_s->sme.mobility_domain, mobility_domain, 2);
 978 #endif /* CONFIG_SME */
 979         }
 980         if (ftie[1] >= sizeof(struct rsn_ftie)) {
 981                 end = ftie + 2 + ftie[1];
 982                 hdr = (struct rsn_ftie *) (ftie + 2);
 983                 pos = (const u8 *) (hdr + 1);
 984                 while (pos + 1 < end) {
 985                         if (pos + 2 + pos[1] > end)
 986                                 break;
 987                         if (pos[0] == FTIE_SUBELEM_R1KH_ID &&
 988                             pos[1] == FT_R1KH_ID_LEN)
 989                                 r1kh_id = pos + 2;
 990                         else if (pos[0] == FTIE_SUBELEM_R0KH_ID &&
 991                                  pos[1] >= 1 && pos[1] <= FT_R0KH_ID_MAX_LEN) {
 992                                 r0kh_id = pos + 2;
 993                                 r0kh_id_len = pos[1];
 994                         }
 995                         pos += 2 + pos[1];
 996                 }
 997         }
 998         wpa_sm_set_ft_params(wpa_s->wpa, mobility_domain, r0kh_id,
 999                              r0kh_id_len, r1kh_id);
1000 }
1001 #endif /* CONFIG_IEEE80211R */
1002
1003 static void wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1004                                            union wpa_event_data *data)
1005 {
1006         int l, len, found = 0, wpa_found, rsn_found;
1007         const u8 *p;
1008 #ifdef CONFIG_IEEE80211R
1009         const u8 *mdie = NULL, *ftie = NULL;
1010 #endif /* CONFIG_IEEE80211R */
1011
1012         wpa_printf(MSG_DEBUG, "Association info event");
1013         if (data->assoc_info.req_ies)
1014                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1015                             data->assoc_info.req_ies_len);
1016         if (data->assoc_info.resp_ies)
1017                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1018                             data->assoc_info.resp_ies_len);
1019         if (data->assoc_info.beacon_ies)
1020                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1021                             data->assoc_info.beacon_ies,
1022                             data->assoc_info.beacon_ies_len);
1023         if (data->assoc_info.freq)
1024                 wpa_printf(MSG_DEBUG, "freq=%u MHz", data->assoc_info.freq);
1025
1026         p = data->assoc_info.req_ies;
1027         l = data->assoc_info.req_ies_len;
1028
1029         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1030         while (p && l >= 2) {
1031                 len = p[1] + 2;
1032                 if (len > l) {
1033                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1034                                     p, l);
1035                         break;
1036                 }
1037                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1038                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1039                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1040                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1041                                 break;
1042                         found = 1;
1043                         wpa_find_assoc_pmkid(wpa_s);
1044                         break;
1045                 }
1046                 l -= len;
1047                 p += len;
1048         }
1049         if (!found && data->assoc_info.req_ies)
1050                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1051
1052 #ifdef CONFIG_IEEE80211R
1053 #ifdef CONFIG_SME
1054         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1055                 u8 bssid[ETH_ALEN];
1056                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1057                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1058                                                  data->assoc_info.resp_ies,
1059                                                  data->assoc_info.resp_ies_len,
1060                                                  bssid) < 0) {
1061                         wpa_printf(MSG_DEBUG, "FT: Validation of "
1062                                    "Reassociation Response failed");
1063                         /* TODO: force disconnection? */
1064                 }
1065         }
1066 #endif /* CONFIG_SME */
1067
1068         p = data->assoc_info.resp_ies;
1069         l = data->assoc_info.resp_ies_len;
1070
1071         /* Go through the IEs and make a copy of the FT/MD IE, if present. */
1072         while (p && l >= 2) {
1073                 len = p[1] + 2;
1074                 if (len > l) {
1075                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1076                                     p, l);
1077                         break;
1078                 }
1079                 if (p[0] == WLAN_EID_FAST_BSS_TRANSITION)
1080                         ftie = p;
1081                 else if (p[0] == WLAN_EID_MOBILITY_DOMAIN)
1082                         mdie = p;
1083                 l -= len;
1084                 p += len;
1085         }
1086
1087         wpa_assoc_set_ft_params(wpa_s, ftie, mdie);
1088 #endif /* CONFIG_IEEE80211R */
1089
1090         /* WPA/RSN IE from Beacon/ProbeResp */
1091         p = data->assoc_info.beacon_ies;
1092         l = data->assoc_info.beacon_ies_len;
1093
1094         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1095          */
1096         wpa_found = rsn_found = 0;
1097         while (p && l >= 2) {
1098                 len = p[1] + 2;
1099                 if (len > l) {
1100                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1101                                     p, l);
1102                         break;
1103                 }
1104                 if (!wpa_found &&
1105                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1106                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1107                         wpa_found = 1;
1108                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1109                 }
1110
1111                 if (!rsn_found &&
1112                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1113                         rsn_found = 1;
1114                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1115                 }
1116
1117                 l -= len;
1118                 p += len;
1119         }
1120
1121         if (!wpa_found && data->assoc_info.beacon_ies)
1122                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1123         if (!rsn_found && data->assoc_info.beacon_ies)
1124                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1125         if (wpa_found || rsn_found)
1126                 wpa_s->ap_ies_from_associnfo = 1;
1127
1128         wpa_s->assoc_freq = data->assoc_info.freq;
1129 }
1130
1131
1132 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1133                                        union wpa_event_data *data)
1134 {
1135         u8 bssid[ETH_ALEN];
1136         int ft_completed;
1137         int bssid_changed;
1138         struct wpa_driver_capa capa;
1139
1140 #ifdef CONFIG_AP
1141         if (wpa_s->ap_iface) {
1142                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1143                                     data->assoc_info.addr,
1144                                     data->assoc_info.req_ies,
1145                                     data->assoc_info.req_ies_len);
1146                 return;
1147         }
1148 #endif /* CONFIG_AP */
1149
1150         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1151         if (data)
1152                 wpa_supplicant_event_associnfo(wpa_s, data);
1153
1154         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1155         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1156                 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1157         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
1158             (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1159              os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
1160                 wpa_msg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1161                         MACSTR, MAC2STR(bssid));
1162                 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1163                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1164                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1165                 if (bssid_changed)
1166                         wpas_notify_bssid_changed(wpa_s);
1167
1168                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1169                         wpa_clear_keys(wpa_s, bssid);
1170                 }
1171                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1172                         wpa_supplicant_disassociate(
1173                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1174                         return;
1175                 }
1176                 if (wpa_s->current_ssid) {
1177                         struct wpa_bss *bss = NULL;
1178                         struct wpa_ssid *ssid = wpa_s->current_ssid;
1179                         if (ssid->ssid_len > 0)
1180                                 bss = wpa_bss_get(wpa_s, bssid,
1181                                                   ssid->ssid, ssid->ssid_len);
1182                         if (!bss)
1183                                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1184                         if (bss)
1185                                 wpa_s->current_bss = bss;
1186                 }
1187         }
1188
1189 #ifdef CONFIG_SME
1190         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1191         wpa_s->sme.prev_bssid_set = 1;
1192 #endif /* CONFIG_SME */
1193
1194         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1195         if (wpa_s->current_ssid) {
1196                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1197                  * initialized before association, but for other modes,
1198                  * initialize PC/SC here, if the current configuration needs
1199                  * smartcard or SIM/USIM. */
1200                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1201         }
1202         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1203         l2_packet_notify_auth_start(wpa_s->l2);
1204
1205         /*
1206          * Set portEnabled first to FALSE in order to get EAP state machine out
1207          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1208          * state machine may transit to AUTHENTICATING state based on obsolete
1209          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1210          * AUTHENTICATED without ever giving chance to EAP state machine to
1211          * reset the state.
1212          */
1213         if (!ft_completed) {
1214                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1215                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1216         }
1217         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1218                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1219         /* 802.1X::portControl = Auto */
1220         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1221         wpa_s->eapol_received = 0;
1222         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1223             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1224             (wpa_s->current_ssid &&
1225              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1226                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1227                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1228         } else if (!ft_completed) {
1229                 /* Timeout for receiving the first EAPOL packet */
1230                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1231         }
1232         wpa_supplicant_cancel_scan(wpa_s);
1233
1234         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1235             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1236                 /*
1237                  * We are done; the driver will take care of RSN 4-way
1238                  * handshake.
1239                  */
1240                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1241                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1242                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1243                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1244         }
1245
1246         if (wpa_s->pending_eapol_rx) {
1247                 struct os_time now, age;
1248                 os_get_time(&now);
1249                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1250                 if (age.sec == 0 && age.usec < 100000 &&
1251                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1252                     0) {
1253                         wpa_printf(MSG_DEBUG, "Process pending EAPOL frame "
1254                                    "that was received just before association "
1255                                    "notification");
1256                         wpa_supplicant_rx_eapol(
1257                                 wpa_s, wpa_s->pending_eapol_rx_src,
1258                                 wpabuf_head(wpa_s->pending_eapol_rx),
1259                                 wpabuf_len(wpa_s->pending_eapol_rx));
1260                 }
1261                 wpabuf_free(wpa_s->pending_eapol_rx);
1262                 wpa_s->pending_eapol_rx = NULL;
1263         }
1264
1265 #ifdef CONFIG_BGSCAN
1266         if (wpa_s->current_ssid != wpa_s->bgscan_ssid) {
1267                 bgscan_deinit(wpa_s);
1268                 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
1269                         if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
1270                                 wpa_printf(MSG_DEBUG, "Failed to initialize "
1271                                            "bgscan");
1272                                 /*
1273                                  * Live without bgscan; it is only used as a
1274                                  * roaming optimization, so the initial
1275                                  * connection is not affected.
1276                                  */
1277                         } else
1278                                 wpa_s->bgscan_ssid = wpa_s->current_ssid;
1279                 } else
1280                         wpa_s->bgscan_ssid = NULL;
1281         }
1282 #endif /* CONFIG_BGSCAN */
1283
1284         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1285              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1286             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1287             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1288                 /* Set static WEP keys again */
1289                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1290         }
1291 }
1292
1293
1294 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s)
1295 {
1296         const u8 *bssid;
1297 #ifdef CONFIG_SME
1298         int authenticating;
1299         u8 prev_pending_bssid[ETH_ALEN];
1300
1301         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1302         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1303 #endif /* CONFIG_SME */
1304
1305         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1306                 /*
1307                  * At least Host AP driver and a Prism3 card seemed to be
1308                  * generating streams of disconnected events when configuring
1309                  * IBSS for WPA-None. Ignore them for now.
1310                  */
1311                 wpa_printf(MSG_DEBUG, "Disconnect event - ignore in "
1312                            "IBSS/WPA-None mode");
1313                 return;
1314         }
1315
1316         if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1317             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1318                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1319                         "pre-shared key may be incorrect");
1320         }
1321         if (wpa_s->wpa_state >= WPA_ASSOCIATED)
1322                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
1323         bssid = wpa_s->bssid;
1324         if (is_zero_ether_addr(bssid))
1325                 bssid = wpa_s->pending_bssid;
1326         wpa_blacklist_add(wpa_s, bssid);
1327         wpa_sm_notify_disassoc(wpa_s->wpa);
1328         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "- Disconnect event - "
1329                 "remove keys");
1330         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1331                 wpa_s->keys_cleared = 0;
1332                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1333         }
1334         wpa_supplicant_mark_disassoc(wpa_s);
1335         bgscan_deinit(wpa_s);
1336 #ifdef CONFIG_SME
1337         if (authenticating &&
1338             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
1339                 /*
1340                  * mac80211-workaround to force deauth on failed auth cmd,
1341                  * requires us to remain in authenticating state to allow the
1342                  * second authentication attempt to be continued properly.
1343                  */
1344                 wpa_printf(MSG_DEBUG, "SME: Allow pending authentication to "
1345                            "proceed after disconnection event");
1346                 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1347                 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1348         }
1349 #endif /* CONFIG_SME */
1350 }
1351
1352
1353 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1354 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
1355                                                     void *sock_ctx)
1356 {
1357         struct wpa_supplicant *wpa_s = eloop_ctx;
1358
1359         if (!wpa_s->pending_mic_error_report)
1360                 return;
1361
1362         wpa_printf(MSG_DEBUG, "WPA: Sending pending MIC error report");
1363         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1364         wpa_s->pending_mic_error_report = 0;
1365 }
1366 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1367
1368
1369 static void
1370 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1371                                          union wpa_event_data *data)
1372 {
1373         int pairwise;
1374         struct os_time t;
1375
1376         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1377         pairwise = (data && data->michael_mic_failure.unicast);
1378         os_get_time(&t);
1379         if ((wpa_s->last_michael_mic_error &&
1380              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1381             wpa_s->pending_mic_error_report) {
1382                 if (wpa_s->pending_mic_error_report) {
1383                         /*
1384                          * Send the pending MIC error report immediately since
1385                          * we are going to start countermeasures and AP better
1386                          * do the same.
1387                          */
1388                         wpa_sm_key_request(wpa_s->wpa, 1,
1389                                            wpa_s->pending_mic_error_pairwise);
1390                 }
1391
1392                 /* Send the new MIC error report immediately since we are going
1393                  * to start countermeasures and AP better do the same.
1394                  */
1395                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1396
1397                 /* initialize countermeasures */
1398                 wpa_s->countermeasures = 1;
1399                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1400
1401                 /*
1402                  * Need to wait for completion of request frame. We do not get
1403                  * any callback for the message completion, so just wait a
1404                  * short while and hope for the best. */
1405                 os_sleep(0, 10000);
1406
1407                 wpa_drv_set_countermeasures(wpa_s, 1);
1408                 wpa_supplicant_deauthenticate(wpa_s,
1409                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
1410                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1411                                      wpa_s, NULL);
1412                 eloop_register_timeout(60, 0,
1413                                        wpa_supplicant_stop_countermeasures,
1414                                        wpa_s, NULL);
1415                 /* TODO: mark the AP rejected for 60 second. STA is
1416                  * allowed to associate with another AP.. */
1417         } else {
1418 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1419                 if (wpa_s->mic_errors_seen) {
1420                         /*
1421                          * Reduce the effectiveness of Michael MIC error
1422                          * reports as a means for attacking against TKIP if
1423                          * more than one MIC failure is noticed with the same
1424                          * PTK. We delay the transmission of the reports by a
1425                          * random time between 0 and 60 seconds in order to
1426                          * force the attacker wait 60 seconds before getting
1427                          * the information on whether a frame resulted in a MIC
1428                          * failure.
1429                          */
1430                         u8 rval[4];
1431                         int sec;
1432
1433                         if (os_get_random(rval, sizeof(rval)) < 0)
1434                                 sec = os_random() % 60;
1435                         else
1436                                 sec = WPA_GET_BE32(rval) % 60;
1437                         wpa_printf(MSG_DEBUG, "WPA: Delay MIC error report %d "
1438                                    "seconds", sec);
1439                         wpa_s->pending_mic_error_report = 1;
1440                         wpa_s->pending_mic_error_pairwise = pairwise;
1441                         eloop_cancel_timeout(
1442                                 wpa_supplicant_delayed_mic_error_report,
1443                                 wpa_s, NULL);
1444                         eloop_register_timeout(
1445                                 sec, os_random() % 1000000,
1446                                 wpa_supplicant_delayed_mic_error_report,
1447                                 wpa_s, NULL);
1448                 } else {
1449                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1450                 }
1451 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1452                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1453 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1454         }
1455         wpa_s->last_michael_mic_error = t.sec;
1456         wpa_s->mic_errors_seen++;
1457 }
1458
1459
1460 #ifdef CONFIG_TERMINATE_ONLASTIF
1461 static int any_interfaces(struct wpa_supplicant *head)
1462 {
1463         struct wpa_supplicant *wpa_s;
1464
1465         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1466                 if (!wpa_s->interface_removed)
1467                         return 1;
1468         return 0;
1469 }
1470 #endif /* CONFIG_TERMINATE_ONLASTIF */
1471
1472
1473 static void
1474 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1475                                       union wpa_event_data *data)
1476 {
1477         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1478                 return;
1479
1480         switch (data->interface_status.ievent) {
1481         case EVENT_INTERFACE_ADDED:
1482                 if (!wpa_s->interface_removed)
1483                         break;
1484                 wpa_s->interface_removed = 0;
1485                 wpa_printf(MSG_DEBUG, "Configured interface was added.");
1486                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1487                         wpa_printf(MSG_INFO, "Failed to initialize the driver "
1488                                    "after interface was added.");
1489                 }
1490                 break;
1491         case EVENT_INTERFACE_REMOVED:
1492                 wpa_printf(MSG_DEBUG, "Configured interface was removed.");
1493                 wpa_s->interface_removed = 1;
1494                 wpa_supplicant_mark_disassoc(wpa_s);
1495                 l2_packet_deinit(wpa_s->l2);
1496                 wpa_s->l2 = NULL;
1497 #ifdef CONFIG_TERMINATE_ONLASTIF
1498                 /* check if last interface */
1499                 if (!any_interfaces(wpa_s->global->ifaces))
1500                         eloop_terminate();
1501 #endif /* CONFIG_TERMINATE_ONLASTIF */
1502                 break;
1503         }
1504 }
1505
1506
1507 #ifdef CONFIG_PEERKEY
1508 static void
1509 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1510                               union wpa_event_data *data)
1511 {
1512         if (data == NULL)
1513                 return;
1514         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1515 }
1516 #endif /* CONFIG_PEERKEY */
1517
1518
1519 #ifdef CONFIG_IEEE80211R
1520 static void
1521 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1522                                  union wpa_event_data *data)
1523 {
1524         if (data == NULL)
1525                 return;
1526
1527         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1528                                     data->ft_ies.ies_len,
1529                                     data->ft_ies.ft_action,
1530                                     data->ft_ies.target_ap,
1531                                     data->ft_ies.ric_ies,
1532                                     data->ft_ies.ric_ies_len) < 0) {
1533                 /* TODO: prevent MLME/driver from trying to associate? */
1534         }
1535 }
1536 #endif /* CONFIG_IEEE80211R */
1537
1538
1539 #ifdef CONFIG_IBSS_RSN
1540 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1541                                                 union wpa_event_data *data)
1542 {
1543         if (data == NULL)
1544                 return;
1545         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1546 }
1547 #endif /* CONFIG_IBSS_RSN */
1548
1549
1550 #ifdef CONFIG_IEEE80211R
1551 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1552                          size_t len)
1553 {
1554         const u8 *sta_addr, *target_ap_addr;
1555         u16 status;
1556
1557         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1558         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1559                 return; /* only SME case supported for now */
1560         if (len < 1 + 2 * ETH_ALEN + 2)
1561                 return;
1562         if (data[0] != 2)
1563                 return; /* Only FT Action Response is supported for now */
1564         sta_addr = data + 1;
1565         target_ap_addr = data + 1 + ETH_ALEN;
1566         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1567         wpa_printf(MSG_DEBUG, "FT: Received FT Action Response: STA " MACSTR
1568                    " TargetAP " MACSTR " status %u",
1569                    MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1570
1571         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1572                 wpa_printf(MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1573                            " in FT Action Response", MAC2STR(sta_addr));
1574                 return;
1575         }
1576
1577         if (status) {
1578                 wpa_printf(MSG_DEBUG, "FT: FT Action Response indicates "
1579                            "failure (status code %d)", status);
1580                 /* TODO: report error to FT code(?) */
1581                 return;
1582         }
1583
1584         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1585                                     len - (1 + 2 * ETH_ALEN + 2), 1,
1586                                     target_ap_addr, NULL, 0) < 0)
1587                 return;
1588
1589 #ifdef CONFIG_SME
1590         {
1591                 struct wpa_bss *bss;
1592                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1593                 if (bss)
1594                         wpa_s->sme.freq = bss->freq;
1595                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1596                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1597                               WLAN_AUTH_FT);
1598         }
1599 #endif /* CONFIG_SME */
1600 }
1601 #endif /* CONFIG_IEEE80211R */
1602
1603
1604 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1605                           union wpa_event_data *data)
1606 {
1607         struct wpa_supplicant *wpa_s = ctx;
1608
1609         switch (event) {
1610         case EVENT_AUTH:
1611                 sme_event_auth(wpa_s, data);
1612                 break;
1613         case EVENT_ASSOC:
1614                 wpa_supplicant_event_assoc(wpa_s, data);
1615                 break;
1616         case EVENT_DISASSOC:
1617                 wpa_printf(MSG_DEBUG, "Disassociation notification");
1618 #ifdef CONFIG_AP
1619                 if (wpa_s->ap_iface && data) {
1620                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1621                                                data->disassoc_info.addr);
1622                         break;
1623                 }
1624 #endif /* CONFIG_AP */
1625                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1626                         sme_event_disassoc(wpa_s, data);
1627                 /* fall through */
1628         case EVENT_DEAUTH:
1629                 if (event == EVENT_DEAUTH)
1630                         wpa_printf(MSG_DEBUG, "Deauthentication notification");
1631 #ifdef CONFIG_AP
1632                 if (wpa_s->ap_iface && data) {
1633                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1634                                                data->deauth_info.addr);
1635                         break;
1636                 }
1637 #endif /* CONFIG_AP */
1638                 wpa_supplicant_event_disassoc(wpa_s);
1639                 break;
1640         case EVENT_MICHAEL_MIC_FAILURE:
1641                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
1642                 break;
1643 #ifndef CONFIG_NO_SCAN_PROCESSING
1644         case EVENT_SCAN_RESULTS:
1645                 wpa_supplicant_event_scan_results(wpa_s, data);
1646                 break;
1647 #endif /* CONFIG_NO_SCAN_PROCESSING */
1648         case EVENT_ASSOCINFO:
1649                 wpa_supplicant_event_associnfo(wpa_s, data);
1650                 break;
1651         case EVENT_INTERFACE_STATUS:
1652                 wpa_supplicant_event_interface_status(wpa_s, data);
1653                 break;
1654         case EVENT_PMKID_CANDIDATE:
1655                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
1656                 break;
1657 #ifdef CONFIG_PEERKEY
1658         case EVENT_STKSTART:
1659                 wpa_supplicant_event_stkstart(wpa_s, data);
1660                 break;
1661 #endif /* CONFIG_PEERKEY */
1662 #ifdef CONFIG_IEEE80211R
1663         case EVENT_FT_RESPONSE:
1664                 wpa_supplicant_event_ft_response(wpa_s, data);
1665                 break;
1666 #endif /* CONFIG_IEEE80211R */
1667 #ifdef CONFIG_IBSS_RSN
1668         case EVENT_IBSS_RSN_START:
1669                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
1670                 break;
1671 #endif /* CONFIG_IBSS_RSN */
1672         case EVENT_ASSOC_REJECT:
1673                 sme_event_assoc_reject(wpa_s, data);
1674                 break;
1675         case EVENT_AUTH_TIMED_OUT:
1676                 sme_event_auth_timed_out(wpa_s, data);
1677                 break;
1678         case EVENT_ASSOC_TIMED_OUT:
1679                 sme_event_assoc_timed_out(wpa_s, data);
1680                 break;
1681 #ifdef CONFIG_AP
1682         case EVENT_TX_STATUS:
1683                 if (wpa_s->ap_iface == NULL)
1684                         break;
1685                 switch (data->tx_status.type) {
1686                 case WLAN_FC_TYPE_MGMT:
1687                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
1688                                       data->tx_status.data_len,
1689                                       data->tx_status.stype,
1690                                       data->tx_status.ack);
1691                         break;
1692                 case WLAN_FC_TYPE_DATA:
1693                         ap_tx_status(wpa_s, data->tx_status.dst,
1694                                      data->tx_status.data,
1695                                      data->tx_status.data_len,
1696                                      data->tx_status.ack);
1697                         break;
1698                 }
1699                 break;
1700         case EVENT_RX_FROM_UNKNOWN:
1701                 if (wpa_s->ap_iface == NULL)
1702                         break;
1703                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame,
1704                                        data->rx_from_unknown.len);
1705                 break;
1706         case EVENT_RX_MGMT:
1707                 if (wpa_s->ap_iface == NULL)
1708                         break;
1709                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
1710                 break;
1711 #endif /* CONFIG_AP */
1712         case EVENT_RX_ACTION:
1713                 wpa_printf(MSG_DEBUG, "Received Action frame: SA=" MACSTR
1714                            " Category=%u DataLen=%d freq=%d MHz",
1715                            MAC2STR(data->rx_action.sa),
1716                            data->rx_action.category, (int) data->rx_action.len,
1717                            data->rx_action.freq);
1718 #ifdef CONFIG_IEEE80211R
1719                 if (data->rx_action.category == WLAN_ACTION_FT) {
1720                         ft_rx_action(wpa_s, data->rx_action.data,
1721                                      data->rx_action.len);
1722                         break;
1723                 }
1724 #endif /* CONFIG_IEEE80211R */
1725                 break;
1726 #ifdef CONFIG_CLIENT_MLME
1727         case EVENT_MLME_RX: {
1728                 struct ieee80211_rx_status rx_status;
1729                 os_memset(&rx_status, 0, sizeof(rx_status));
1730                 rx_status.freq = data->mlme_rx.freq;
1731                 rx_status.channel = data->mlme_rx.channel;
1732                 rx_status.ssi = data->mlme_rx.ssi;
1733                 ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len,
1734                                  &rx_status);
1735                 break;
1736         }
1737 #endif /* CONFIG_CLIENT_MLME */
1738         case EVENT_EAPOL_RX:
1739                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
1740                                         data->eapol_rx.data,
1741                                         data->eapol_rx.data_len);
1742                 break;
1743         case EVENT_SIGNAL_CHANGE:
1744                 bgscan_notify_signal_change(
1745                         wpa_s, data->signal_change.above_threshold);
1746                 break;
1747         default:
1748                 wpa_printf(MSG_INFO, "Unknown event %d", event);
1749                 break;
1750         }
1751 }