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 "common/ieee802_11_common.h"
  34 #include "blacklist.h"
  35 #include "wpas_glue.h"
  36 #include "wps_supplicant.h"
  37 #include "ibss_rsn.h"
  38 #include "sme.h"
  39 #include "bgscan.h"
  40 #include "ap.h"
  41 #include "bss.h"
  42 #include "mlme.h"
  43 #include "scan.h"
  44
  45
  46 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  47 {
  48         struct wpa_ssid *ssid, *old_ssid;
  49
  50         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  51                 return 0;
  52
  53         wpa_printf(MSG_DEBUG, "Select network based on association "
  54                    "information");
  55         ssid = wpa_supplicant_get_ssid(wpa_s);
  56         if (ssid == NULL) {
  57                 wpa_printf(MSG_INFO, "No network configuration found for the "
  58                            "current AP");
  59                 return -1;
  60         }
  61
  62         if (ssid->disabled) {
  63                 wpa_printf(MSG_DEBUG, "Selected network is disabled");
  64                 return -1;
  65         }
  66
  67         wpa_printf(MSG_DEBUG, "Network configuration found for the current "
  68                    "AP");
  69         if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
  70                               WPA_KEY_MGMT_WPA_NONE |
  71                               WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
  72                               WPA_KEY_MGMT_PSK_SHA256 |
  73                               WPA_KEY_MGMT_IEEE8021X_SHA256)) {
  74                 u8 wpa_ie[80];
  75                 size_t wpa_ie_len = sizeof(wpa_ie);
  76                 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
  77                                           wpa_ie, &wpa_ie_len);
  78         } else {
  79                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  80         }
  81
  82         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
  83                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
  84         old_ssid = wpa_s->current_ssid;
  85         wpa_s->current_ssid = ssid;
  86         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
  87         wpa_supplicant_initiate_eapol(wpa_s);
  88         if (old_ssid != wpa_s->current_ssid)
  89                 wpas_notify_network_changed(wpa_s);
  90
  91         return 0;
  92 }
  93
  94
  95 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
  96                                                 void *sock_ctx)
  97 {
  98         struct wpa_supplicant *wpa_s = eloop_ctx;
  99
 100         if (wpa_s->countermeasures) {
 101                 wpa_s->countermeasures = 0;
 102                 wpa_drv_set_countermeasures(wpa_s, 0);
 103                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 104                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 105         }
 106 }
 107
 108
 109 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 110 {
 111         int bssid_changed;
 112
 113         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 114                 return;
 115
 116         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 117         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 118         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 119         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 120         wpa_s->current_bss = NULL;
 121         if (bssid_changed)
 122                 wpas_notify_bssid_changed(wpa_s);
 123
 124         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 125         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 126         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 127                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 128         wpa_s->ap_ies_from_associnfo = 0;
 129 }
 130
 131
 132 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 133 {
 134         struct wpa_ie_data ie;
 135         int pmksa_set = -1;
 136         size_t i;
 137
 138         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 139             ie.pmkid == NULL)
 140                 return;
 141
 142         for (i = 0; i < ie.num_pmkid; i++) {
 143                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 144                                                     ie.pmkid + i * PMKID_LEN,
 145                                                     NULL, NULL, 0);
 146                 if (pmksa_set == 0) {
 147                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 148                         break;
 149                 }
 150         }
 151
 152         wpa_printf(MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from PMKSA "
 153                    "cache", pmksa_set == 0 ? "" : "not ");
 154 }
 155
 156
 157 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 158                                                  union wpa_event_data *data)
 159 {
 160         if (data == NULL) {
 161                 wpa_printf(MSG_DEBUG, "RSN: No data in PMKID candidate event");
 162                 return;
 163         }
 164         wpa_printf(MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 165                    " index=%d preauth=%d",
 166                    MAC2STR(data->pmkid_candidate.bssid),
 167                    data->pmkid_candidate.index,
 168                    data->pmkid_candidate.preauth);
 169
 170         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 171                             data->pmkid_candidate.index,
 172                             data->pmkid_candidate.preauth);
 173 }
 174
 175
 176 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 177 {
 178         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 179             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 180                 return 0;
 181
 182 #ifdef IEEE8021X_EAPOL
 183         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 184             wpa_s->current_ssid &&
 185             !(wpa_s->current_ssid->eapol_flags &
 186               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 187                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 188                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 189                  * plaintext or static WEP keys). */
 190                 return 0;
 191         }
 192 #endif /* IEEE8021X_EAPOL */
 193
 194         return 1;
 195 }
 196
 197
 198 /**
 199  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 200  * @wpa_s: pointer to wpa_supplicant data
 201  * @ssid: Configuration data for the network
 202  * Returns: 0 on success, -1 on failure
 203  *
 204  * This function is called when starting authentication with a network that is
 205  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 206  */
 207 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 208                               struct wpa_ssid *ssid)
 209 {
 210 #ifdef IEEE8021X_EAPOL
 211         int aka = 0, sim = 0, type;
 212
 213         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 214                 return 0;
 215
 216         if (ssid->eap.eap_methods == NULL) {
 217                 sim = 1;
 218                 aka = 1;
 219         } else {
 220                 struct eap_method_type *eap = ssid->eap.eap_methods;
 221                 while (eap->vendor != EAP_VENDOR_IETF ||
 222                        eap->method != EAP_TYPE_NONE) {
 223                         if (eap->vendor == EAP_VENDOR_IETF) {
 224                                 if (eap->method == EAP_TYPE_SIM)
 225                                         sim = 1;
 226                                 else if (eap->method == EAP_TYPE_AKA)
 227                                         aka = 1;
 228                         }
 229                         eap++;
 230                 }
 231         }
 232
 233         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 234                 sim = 0;
 235         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
 236                 aka = 0;
 237
 238         if (!sim && !aka) {
 239                 wpa_printf(MSG_DEBUG, "Selected network is configured to use "
 240                            "SIM, but neither EAP-SIM nor EAP-AKA are enabled");
 241                 return 0;
 242         }
 243
 244         wpa_printf(MSG_DEBUG, "Selected network is configured to use SIM "
 245                    "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 246         if (sim && aka)
 247                 type = SCARD_TRY_BOTH;
 248         else if (aka)
 249                 type = SCARD_USIM_ONLY;
 250         else
 251                 type = SCARD_GSM_SIM_ONLY;
 252
 253         wpa_s->scard = scard_init(type);
 254         if (wpa_s->scard == NULL) {
 255                 wpa_printf(MSG_WARNING, "Failed to initialize SIM "
 256                            "(pcsc-lite)");
 257                 return -1;
 258         }
 259         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 260         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 261 #endif /* IEEE8021X_EAPOL */
 262
 263         return 0;
 264 }
 265
 266
 267 #ifndef CONFIG_NO_SCAN_PROCESSING
 268 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
 269                                         struct wpa_ssid *ssid)
 270 {
 271         int i, privacy = 0;
 272
 273         if (ssid->mixed_cell)
 274                 return 1;
 275
 276 #ifdef CONFIG_WPS
 277         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 278                 return 1;
 279 #endif /* CONFIG_WPS */
 280
 281         for (i = 0; i < NUM_WEP_KEYS; i++) {
 282                 if (ssid->wep_key_len[i]) {
 283                         privacy = 1;
 284                         break;
 285                 }
 286         }
 287 #ifdef IEEE8021X_EAPOL
 288         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 289             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 290                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 291                 privacy = 1;
 292 #endif /* IEEE8021X_EAPOL */
 293
 294         if (bss->caps & IEEE80211_CAP_PRIVACY)
 295                 return privacy;
 296         return !privacy;
 297 }
 298
 299
 300 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 301                                          struct wpa_ssid *ssid,
 302                                          struct wpa_scan_res *bss)
 303 {
 304         struct wpa_ie_data ie;
 305         int proto_match = 0;
 306         const u8 *rsn_ie, *wpa_ie;
 307         int ret;
 308
 309         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 310         if (ret >= 0)
 311                 return ret;
 312
 313         rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 314         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 315                 proto_match++;
 316
 317                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 318                         wpa_printf(MSG_DEBUG, "   skip RSN IE - parse failed");
 319                         break;
 320                 }
 321                 if (!(ie.proto & ssid->proto)) {
 322                         wpa_printf(MSG_DEBUG, "   skip RSN IE - proto "
 323                                    "mismatch");
 324                         break;
 325                 }
 326
 327                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 328                         wpa_printf(MSG_DEBUG, "   skip RSN IE - PTK cipher "
 329                                    "mismatch");
 330                         break;
 331                 }
 332
 333                 if (!(ie.group_cipher & ssid->group_cipher)) {
 334                         wpa_printf(MSG_DEBUG, "   skip RSN IE - GTK cipher "
 335                                    "mismatch");
 336                         break;
 337                 }
 338
 339                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 340                         wpa_printf(MSG_DEBUG, "   skip RSN IE - key mgmt "
 341                                    "mismatch");
 342                         break;
 343                 }
 344
 345 #ifdef CONFIG_IEEE80211W
 346                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 347                     ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
 348                         wpa_printf(MSG_DEBUG, "   skip RSN IE - no mgmt frame "
 349                                    "protection");
 350                         break;
 351                 }
 352 #endif /* CONFIG_IEEE80211W */
 353
 354                 wpa_printf(MSG_DEBUG, "   selected based on RSN IE");
 355                 return 1;
 356         }
 357
 358         wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 359         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 360                 proto_match++;
 361
 362                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 363                         wpa_printf(MSG_DEBUG, "   skip WPA IE - parse failed");
 364                         break;
 365                 }
 366                 if (!(ie.proto & ssid->proto)) {
 367                         wpa_printf(MSG_DEBUG, "   skip WPA IE - proto "
 368                                    "mismatch");
 369                         break;
 370                 }
 371
 372                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 373                         wpa_printf(MSG_DEBUG, "   skip WPA IE - PTK cipher "
 374                                    "mismatch");
 375                         break;
 376                 }
 377
 378                 if (!(ie.group_cipher & ssid->group_cipher)) {
 379                         wpa_printf(MSG_DEBUG, "   skip WPA IE - GTK cipher "
 380                                    "mismatch");
 381                         break;
 382                 }
 383
 384                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 385                         wpa_printf(MSG_DEBUG, "   skip WPA IE - key mgmt "
 386                                    "mismatch");
 387                         break;
 388                 }
 389
 390                 wpa_printf(MSG_DEBUG, "   selected based on WPA IE");
 391                 return 1;
 392         }
 393
 394         if (proto_match == 0)
 395                 wpa_printf(MSG_DEBUG, "   skip - no WPA/RSN proto match");
 396
 397         return 0;
 398 }
 399
 400
 401 static int freq_allowed(int *freqs, int freq)
 402 {
 403         int i;
 404
 405         if (freqs == NULL)
 406                 return 1;
 407
 408         for (i = 0; freqs[i]; i++)
 409                 if (freqs[i] == freq)
 410                         return 1;
 411         return 0;
 412 }
 413
 414
 415 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 416                                             int i, struct wpa_scan_res *bss,
 417                                             struct wpa_ssid *group)
 418 {
 419         const u8 *ssid_;
 420         u8 wpa_ie_len, rsn_ie_len, ssid_len;
 421         int wpa;
 422         struct wpa_blacklist *e;
 423         const u8 *ie;
 424         struct wpa_ssid *ssid;
 425
 426         ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 427         ssid_ = ie ? ie + 2 : (u8 *) "";
 428         ssid_len = ie ? ie[1] : 0;
 429
 430         ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 431         wpa_ie_len = ie ? ie[1] : 0;
 432
 433         ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 434         rsn_ie_len = ie ? ie[1] : 0;
 435
 436         wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 437                    "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
 438                    i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
 439                    wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 440                    wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ?
 441                    " wps" : "");
 442
 443         e = wpa_blacklist_get(wpa_s, bss->bssid);
 444         if (e && e->count > 1) {
 445                 wpa_printf(MSG_DEBUG, "   skip - blacklisted");
 446                 return 0;
 447         }
 448
 449         if (ssid_len == 0) {
 450                 wpa_printf(MSG_DEBUG, "   skip - SSID not known");
 451                 return 0;
 452         }
 453
 454         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 455
 456         for (ssid = group; ssid; ssid = ssid->pnext) {
 457                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 458
 459                 if (ssid->disabled) {
 460                         wpa_printf(MSG_DEBUG, "   skip - disabled");
 461                         continue;
 462                 }
 463
 464 #ifdef CONFIG_WPS
 465                 if (wpa && ssid->ssid_len == 0 &&
 466                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 467                         check_ssid = 0;
 468
 469                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 470                         /* Only allow wildcard SSID match if an AP
 471                          * advertises active WPS operation that matches
 472                          * with our mode. */
 473                         check_ssid = 1;
 474                         if (ssid->ssid_len == 0 &&
 475                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 476                                 check_ssid = 0;
 477                 }
 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 - SSID mismatch");
 484                         continue;
 485                 }
 486
 487                 if (ssid->bssid_set &&
 488                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 489                         wpa_printf(MSG_DEBUG, "   skip - BSSID mismatch");
 490                         continue;
 491                 }
 492
 493                 if (wpa && !wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 494                         continue;
 495
 496                 if (!wpa &&
 497                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 498                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 499                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 500                         wpa_printf(MSG_DEBUG, "   skip - non-WPA network not "
 501                                    "allowed");
 502                         continue;
 503                 }
 504
 505                 if (!wpa && !wpa_supplicant_match_privacy(bss, ssid)) {
 506                         wpa_printf(MSG_DEBUG, "   skip - privacy mismatch");
 507                         continue;
 508                 }
 509
 510                 if (!wpa && (bss->caps & IEEE80211_CAP_IBSS)) {
 511                         wpa_printf(MSG_DEBUG, "   skip - IBSS (adhoc) "
 512                                    "network");
 513                         continue;
 514                 }
 515
 516                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 517                         wpa_printf(MSG_DEBUG, "   skip - frequency not "
 518                                    "allowed");
 519                         continue;
 520                 }
 521
 522                 /* Matching configuration found */
 523                 return ssid;
 524         }
 525
 526         /* No matching configuration found */
 527         return 0;
 528 }
 529
 530
 531 static struct wpa_bss *
 532 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 533                           struct wpa_scan_results *scan_res,
 534                           struct wpa_ssid *group,
 535                           struct wpa_ssid **selected_ssid)
 536 {
 537         size_t i;
 538
 539         wpa_printf(MSG_DEBUG, "Selecting BSS from priority group %d",
 540                    group->priority);
 541
 542         for (i = 0; i < scan_res->num; i++) {
 543                 struct wpa_scan_res *bss = scan_res->res[i];
 544                 const u8 *ie, *ssid;
 545                 u8 ssid_len;
 546
 547                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
 548                 if (!*selected_ssid)
 549                         continue;
 550
 551                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 552                 ssid = ie ? ie + 2 : (u8 *) "";
 553                 ssid_len = ie ? ie[1] : 0;
 554
 555                 wpa_printf(MSG_DEBUG, "   selected BSS " MACSTR " ssid='%s'",
 556                            MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
 557                 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
 558         }
 559
 560         return NULL;
 561 }
 562
 563
 564 static struct wpa_bss *
 565 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 566                             struct wpa_scan_results *scan_res,
 567                             struct wpa_ssid **selected_ssid)
 568 {
 569         struct wpa_bss *selected = NULL;
 570         int prio;
 571
 572         while (selected == NULL) {
 573                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 574                         selected = wpa_supplicant_select_bss(
 575                                 wpa_s, scan_res, wpa_s->conf->pssid[prio],
 576                                 selected_ssid);
 577                         if (selected)
 578                                 break;
 579                 }
 580
 581                 if (selected == NULL && wpa_s->blacklist) {
 582                         wpa_printf(MSG_DEBUG, "No APs found - clear blacklist "
 583                                    "and try again");
 584                         wpa_blacklist_clear(wpa_s);
 585                         wpa_s->blacklist_cleared++;
 586                 } else if (selected == NULL)
 587                         break;
 588         }
 589
 590         return selected;
 591 }
 592
 593
 594 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 595                                         int timeout_sec, int timeout_usec)
 596 {
 597         if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
 598                 /*
 599                  * No networks are enabled; short-circuit request so
 600                  * we don't wait timeout seconds before transitioning
 601                  * to INACTIVE state.
 602                  */
 603                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 604                 return;
 605         }
 606         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 607 }
 608
 609
 610 void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 611                             struct wpa_bss *selected,
 612                             struct wpa_ssid *ssid)
 613 {
 614         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 615                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 616                         "PBC session overlap");
 617                 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 618                 return;
 619         }
 620
 621         /*
 622          * Do not trigger new association unless the BSSID has changed or if
 623          * reassociation is requested. If we are in process of associating with
 624          * the selected BSSID, do not trigger new attempt.
 625          */
 626         if (wpa_s->reassociate ||
 627             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 628              (wpa_s->wpa_state != WPA_ASSOCIATING ||
 629               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 630               0))) {
 631                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 632                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 633                         return;
 634                 }
 635                 wpa_supplicant_associate(wpa_s, selected, ssid);
 636         } else {
 637                 wpa_printf(MSG_DEBUG, "Already associated with the selected "
 638                            "AP");
 639         }
 640 }
 641
 642
 643 static struct wpa_ssid *
 644 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 645 {
 646         int prio;
 647         struct wpa_ssid *ssid;
 648
 649         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 650                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 651                 {
 652                         if (ssid->disabled)
 653                                 continue;
 654                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 655                             ssid->mode == IEEE80211_MODE_AP)
 656                                 return ssid;
 657                 }
 658         }
 659         return NULL;
 660 }
 661
 662
 663 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 664  * on BSS added and BSS changed events */
 665 static void wpa_supplicant_rsn_preauth_scan_results(
 666         struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res)
 667 {
 668         int i;
 669
 670         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 671                 return;
 672
 673         for (i = scan_res->num - 1; i >= 0; i--) {
 674                 const u8 *ssid, *rsn;
 675                 struct wpa_scan_res *r;
 676
 677                 r = scan_res->res[i];
 678
 679                 ssid = wpa_scan_get_ie(r, WLAN_EID_SSID);
 680                 if (ssid == NULL)
 681                         continue;
 682
 683                 rsn = wpa_scan_get_ie(r, WLAN_EID_RSN);
 684                 if (rsn == NULL)
 685                         continue;
 686
 687                 rsn_preauth_scan_result(wpa_s->wpa, r->bssid, ssid, rsn);
 688         }
 689
 690 }
 691
 692
 693 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
 694                                        struct wpa_bss *selected,
 695                                        struct wpa_ssid *ssid,
 696                                        struct wpa_scan_results *scan_res)
 697 {
 698         size_t i;
 699         struct wpa_scan_res *current_bss = NULL;
 700         int min_diff;
 701
 702         if (wpa_s->reassociate)
 703                 return 1; /* explicit request to reassociate */
 704         if (wpa_s->wpa_state < WPA_ASSOCIATED)
 705                 return 1; /* we are not associated; continue */
 706         if (wpa_s->current_ssid == NULL)
 707                 return 1; /* unknown current SSID */
 708         if (wpa_s->current_ssid != ssid)
 709                 return 1; /* different network block */
 710
 711         for (i = 0; i < scan_res->num; i++) {
 712                 struct wpa_scan_res *res = scan_res->res[i];
 713                 const u8 *ie;
 714                 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
 715                         continue;
 716
 717                 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 718                 if (ie == NULL)
 719                         continue;
 720                 if (ie[1] != wpa_s->current_ssid->ssid_len ||
 721                     os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
 722                         continue;
 723                 current_bss = res;
 724                 break;
 725         }
 726
 727         if (!current_bss)
 728                 return 1; /* current BSS not seen in scan results */
 729
 730         wpa_printf(MSG_DEBUG, "Considering within-ESS reassociation");
 731         wpa_printf(MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
 732                    MAC2STR(current_bss->bssid), current_bss->level);
 733         wpa_printf(MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
 734                    MAC2STR(selected->bssid), selected->level);
 735
 736         if (wpa_s->current_ssid->bssid_set &&
 737             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
 738             0) {
 739                 wpa_printf(MSG_DEBUG, "Allow reassociation - selected BSS has "
 740                            "preferred BSSID");
 741                 return 1;
 742         }
 743
 744         min_diff = 2;
 745         if (current_bss->level < 0) {
 746                 if (current_bss->level < -85)
 747                         min_diff = 1;
 748                 else if (current_bss->level < -80)
 749                         min_diff = 2;
 750                 else if (current_bss->level < -75)
 751                         min_diff = 3;
 752                 else if (current_bss->level < -70)
 753                         min_diff = 4;
 754                 else
 755                         min_diff = 5;
 756         }
 757         if (abs(current_bss->level - selected->level) < min_diff) {
 758                 wpa_printf(MSG_DEBUG, "Skip roam - too small difference in "
 759                            "signal level");
 760                 return 0;
 761         }
 762
 763         return 1;
 764 }
 765
 766
 767 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 768                                               union wpa_event_data *data)
 769 {
 770         struct wpa_bss *selected;
 771         struct wpa_ssid *ssid = NULL;
 772         struct wpa_scan_results *scan_res;
 773         int ap = 0;
 774
 775 #ifdef CONFIG_AP
 776         if (wpa_s->ap_iface)
 777                 ap = 1;
 778 #endif /* CONFIG_AP */
 779
 780         wpa_supplicant_notify_scanning(wpa_s, 0);
 781
 782         scan_res = wpa_supplicant_get_scan_results(wpa_s,
 783                                                    data ? &data->scan_info :
 784                                                    NULL, 1);
 785         if (scan_res == NULL) {
 786                 if (wpa_s->conf->ap_scan == 2 || ap)
 787                         return;
 788                 wpa_printf(MSG_DEBUG, "Failed to get scan results - try "
 789                            "scanning again");
 790                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
 791                 return;
 792         }
 793
 794         if (wpa_s->scan_res_handler) {
 795                 wpa_s->scan_res_handler(wpa_s, scan_res);
 796                 wpa_s->scan_res_handler = NULL;
 797                 wpa_scan_results_free(scan_res);
 798                 return;
 799         }
 800
 801         if (ap) {
 802                 wpa_printf(MSG_DEBUG, "Ignore scan results in AP mode");
 803                 wpa_scan_results_free(scan_res);
 804                 return;
 805         }
 806
 807         wpa_printf(MSG_DEBUG, "New scan results available");
 808         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
 809         wpas_notify_scan_results(wpa_s);
 810
 811         wpas_notify_scan_done(wpa_s, 1);
 812
 813         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
 814                 wpa_scan_results_free(scan_res);
 815                 return;
 816         }
 817
 818         if (wpa_s->disconnected) {
 819                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 820                 wpa_scan_results_free(scan_res);
 821                 return;
 822         }
 823
 824         if (bgscan_notify_scan(wpa_s, scan_res) == 1) {
 825                 wpa_scan_results_free(scan_res);
 826                 return;
 827         }
 828
 829         wpa_supplicant_rsn_preauth_scan_results(wpa_s, scan_res);
 830
 831         selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
 832
 833         if (selected) {
 834                 int skip;
 835                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
 836                                                     scan_res);
 837                 wpa_scan_results_free(scan_res);
 838                 if (skip)
 839                         return;
 840                 wpa_supplicant_connect(wpa_s, selected, ssid);
 841         } else {
 842                 wpa_scan_results_free(scan_res);
 843                 wpa_printf(MSG_DEBUG, "No suitable network found");
 844                 ssid = wpa_supplicant_pick_new_network(wpa_s);
 845                 if (ssid) {
 846                         wpa_printf(MSG_DEBUG, "Setup a new network");
 847                         wpa_supplicant_associate(wpa_s, NULL, ssid);
 848                 } else {
 849                         int timeout_sec = 5;
 850                         int timeout_usec = 0;
 851                         wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
 852                                                     timeout_usec);
 853                 }
 854         }
 855 }
 856 #endif /* CONFIG_NO_SCAN_PROCESSING */
 857
 858
 859 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
 860                                           union wpa_event_data *data)
 861 {
 862         int l, len, found = 0, wpa_found, rsn_found;
 863         const u8 *p;
 864
 865         wpa_printf(MSG_DEBUG, "Association info event");
 866         if (data->assoc_info.req_ies)
 867                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
 868                             data->assoc_info.req_ies_len);
 869         if (data->assoc_info.resp_ies)
 870                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
 871                             data->assoc_info.resp_ies_len);
 872         if (data->assoc_info.beacon_ies)
 873                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
 874                             data->assoc_info.beacon_ies,
 875                             data->assoc_info.beacon_ies_len);
 876         if (data->assoc_info.freq)
 877                 wpa_printf(MSG_DEBUG, "freq=%u MHz", data->assoc_info.freq);
 878
 879         p = data->assoc_info.req_ies;
 880         l = data->assoc_info.req_ies_len;
 881
 882         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
 883         while (p && l >= 2) {
 884                 len = p[1] + 2;
 885                 if (len > l) {
 886                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
 887                                     p, l);
 888                         break;
 889                 }
 890                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
 891                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
 892                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
 893                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
 894                                 break;
 895                         found = 1;
 896                         wpa_find_assoc_pmkid(wpa_s);
 897                         break;
 898                 }
 899                 l -= len;
 900                 p += len;
 901         }
 902         if (!found && data->assoc_info.req_ies)
 903                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 904
 905 #ifdef CONFIG_IEEE80211R
 906 #ifdef CONFIG_SME
 907         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
 908                 u8 bssid[ETH_ALEN];
 909                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
 910                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
 911                                                  data->assoc_info.resp_ies,
 912                                                  data->assoc_info.resp_ies_len,
 913                                                  bssid) < 0) {
 914                         wpa_printf(MSG_DEBUG, "FT: Validation of "
 915                                    "Reassociation Response failed");
 916                         wpa_supplicant_deauthenticate(
 917                                 wpa_s, WLAN_REASON_INVALID_IE);
 918                         return -1;
 919                 }
 920         }
 921
 922         p = data->assoc_info.resp_ies;
 923         l = data->assoc_info.resp_ies_len;
 924
 925 #ifdef CONFIG_WPS_STRICT
 926         if (wpa_s->current_ssid &&
 927             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
 928                 struct wpabuf *wps;
 929                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
 930                 if (wps == NULL) {
 931                         wpa_printf(MSG_INFO, "WPS-STRICT: AP did not include "
 932                                    "WPS IE in (Re)Association Response");
 933                         return -1;
 934                 }
 935
 936                 if (wps_validate_assoc_resp(wps) < 0) {
 937                         wpabuf_free(wps);
 938                         wpa_supplicant_deauthenticate(
 939                                 wpa_s, WLAN_REASON_INVALID_IE);
 940                         return -1;
 941                 }
 942                 wpabuf_free(wps);
 943         }
 944 #endif /* CONFIG_WPS_STRICT */
 945
 946         /* Go through the IEs and make a copy of the MDIE, if present. */
 947         while (p && l >= 2) {
 948                 len = p[1] + 2;
 949                 if (len > l) {
 950                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
 951                                     p, l);
 952                         break;
 953                 }
 954                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
 955                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
 956                         wpa_s->sme.ft_used = 1;
 957                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
 958                                   MOBILITY_DOMAIN_ID_LEN);
 959                         break;
 960                 }
 961                 l -= len;
 962                 p += len;
 963         }
 964 #endif /* CONFIG_SME */
 965
 966         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
 967                              data->assoc_info.resp_ies_len);
 968 #endif /* CONFIG_IEEE80211R */
 969
 970         /* WPA/RSN IE from Beacon/ProbeResp */
 971         p = data->assoc_info.beacon_ies;
 972         l = data->assoc_info.beacon_ies_len;
 973
 974         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
 975          */
 976         wpa_found = rsn_found = 0;
 977         while (p && l >= 2) {
 978                 len = p[1] + 2;
 979                 if (len > l) {
 980                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
 981                                     p, l);
 982                         break;
 983                 }
 984                 if (!wpa_found &&
 985                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
 986                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
 987                         wpa_found = 1;
 988                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
 989                 }
 990
 991                 if (!rsn_found &&
 992                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
 993                         rsn_found = 1;
 994                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
 995                 }
 996
 997                 l -= len;
 998                 p += len;
 999         }
1000
1001         if (!wpa_found && data->assoc_info.beacon_ies)
1002                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1003         if (!rsn_found && data->assoc_info.beacon_ies)
1004                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1005         if (wpa_found || rsn_found)
1006                 wpa_s->ap_ies_from_associnfo = 1;
1007
1008         wpa_s->assoc_freq = data->assoc_info.freq;
1009
1010         return 0;
1011 }
1012
1013
1014 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1015                                        union wpa_event_data *data)
1016 {
1017         u8 bssid[ETH_ALEN];
1018         int ft_completed;
1019         int bssid_changed;
1020         struct wpa_driver_capa capa;
1021
1022 #ifdef CONFIG_AP
1023         if (wpa_s->ap_iface) {
1024                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1025                                     data->assoc_info.addr,
1026                                     data->assoc_info.req_ies,
1027                                     data->assoc_info.req_ies_len);
1028                 return;
1029         }
1030 #endif /* CONFIG_AP */
1031
1032         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1033         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1034                 return;
1035
1036         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1037         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1038                 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1039         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
1040             (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1041              os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
1042                 wpa_msg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1043                         MACSTR, MAC2STR(bssid));
1044                 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1045                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1046                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1047                 if (bssid_changed)
1048                         wpas_notify_bssid_changed(wpa_s);
1049
1050                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1051                         wpa_clear_keys(wpa_s, bssid);
1052                 }
1053                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1054                         wpa_supplicant_disassociate(
1055                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1056                         return;
1057                 }
1058                 if (wpa_s->current_ssid) {
1059                         struct wpa_bss *bss = NULL;
1060                         struct wpa_ssid *ssid = wpa_s->current_ssid;
1061                         if (ssid->ssid_len > 0)
1062                                 bss = wpa_bss_get(wpa_s, bssid,
1063                                                   ssid->ssid, ssid->ssid_len);
1064                         if (!bss)
1065                                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1066                         if (bss)
1067                                 wpa_s->current_bss = bss;
1068                 }
1069         }
1070
1071 #ifdef CONFIG_SME
1072         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1073         wpa_s->sme.prev_bssid_set = 1;
1074 #endif /* CONFIG_SME */
1075
1076         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1077         if (wpa_s->current_ssid) {
1078                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1079                  * initialized before association, but for other modes,
1080                  * initialize PC/SC here, if the current configuration needs
1081                  * smartcard or SIM/USIM. */
1082                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1083         }
1084         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1085         if (wpa_s->l2)
1086                 l2_packet_notify_auth_start(wpa_s->l2);
1087
1088         /*
1089          * Set portEnabled first to FALSE in order to get EAP state machine out
1090          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1091          * state machine may transit to AUTHENTICATING state based on obsolete
1092          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1093          * AUTHENTICATED without ever giving chance to EAP state machine to
1094          * reset the state.
1095          */
1096         if (!ft_completed) {
1097                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1098                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1099         }
1100         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1101                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1102         /* 802.1X::portControl = Auto */
1103         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1104         wpa_s->eapol_received = 0;
1105         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1106             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1107             (wpa_s->current_ssid &&
1108              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1109                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1110                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1111         } else if (!ft_completed) {
1112                 /* Timeout for receiving the first EAPOL packet */
1113                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1114         }
1115         wpa_supplicant_cancel_scan(wpa_s);
1116
1117         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1118             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1119                 /*
1120                  * We are done; the driver will take care of RSN 4-way
1121                  * handshake.
1122                  */
1123                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1124                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1125                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1126                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1127         }
1128
1129         if (wpa_s->pending_eapol_rx) {
1130                 struct os_time now, age;
1131                 os_get_time(&now);
1132                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1133                 if (age.sec == 0 && age.usec < 100000 &&
1134                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1135                     0) {
1136                         wpa_printf(MSG_DEBUG, "Process pending EAPOL frame "
1137                                    "that was received just before association "
1138                                    "notification");
1139                         wpa_supplicant_rx_eapol(
1140                                 wpa_s, wpa_s->pending_eapol_rx_src,
1141                                 wpabuf_head(wpa_s->pending_eapol_rx),
1142                                 wpabuf_len(wpa_s->pending_eapol_rx));
1143                 }
1144                 wpabuf_free(wpa_s->pending_eapol_rx);
1145                 wpa_s->pending_eapol_rx = NULL;
1146         }
1147
1148 #ifdef CONFIG_BGSCAN
1149         if (wpa_s->current_ssid != wpa_s->bgscan_ssid) {
1150                 bgscan_deinit(wpa_s);
1151                 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
1152                         if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
1153                                 wpa_printf(MSG_DEBUG, "Failed to initialize "
1154                                            "bgscan");
1155                                 /*
1156                                  * Live without bgscan; it is only used as a
1157                                  * roaming optimization, so the initial
1158                                  * connection is not affected.
1159                                  */
1160                         } else
1161                                 wpa_s->bgscan_ssid = wpa_s->current_ssid;
1162                 } else
1163                         wpa_s->bgscan_ssid = NULL;
1164         }
1165 #endif /* CONFIG_BGSCAN */
1166
1167         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1168              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1169             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1170             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1171                 /* Set static WEP keys again */
1172                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1173         }
1174 }
1175
1176
1177 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1178                                           u16 reason_code)
1179 {
1180         const u8 *bssid;
1181 #ifdef CONFIG_SME
1182         int authenticating;
1183         u8 prev_pending_bssid[ETH_ALEN];
1184
1185         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1186         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1187 #endif /* CONFIG_SME */
1188
1189         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1190                 /*
1191                  * At least Host AP driver and a Prism3 card seemed to be
1192                  * generating streams of disconnected events when configuring
1193                  * IBSS for WPA-None. Ignore them for now.
1194                  */
1195                 wpa_printf(MSG_DEBUG, "Disconnect event - ignore in "
1196                            "IBSS/WPA-None mode");
1197                 return;
1198         }
1199
1200         if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1201             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1202                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1203                         "pre-shared key may be incorrect");
1204         }
1205         if (wpa_s->wpa_state >= WPA_ASSOCIATED)
1206                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
1207         bssid = wpa_s->bssid;
1208         if (is_zero_ether_addr(bssid))
1209                 bssid = wpa_s->pending_bssid;
1210         wpa_blacklist_add(wpa_s, bssid);
1211         wpa_sm_notify_disassoc(wpa_s->wpa);
1212         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1213                 " reason=%d",
1214                 MAC2STR(bssid), reason_code);
1215         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1216                 wpa_printf(MSG_DEBUG, "Disconnect event - remove keys");
1217                 wpa_s->keys_cleared = 0;
1218                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1219         }
1220         wpa_supplicant_mark_disassoc(wpa_s);
1221         bgscan_deinit(wpa_s);
1222         wpa_s->bgscan_ssid = NULL;
1223 #ifdef CONFIG_SME
1224         if (authenticating &&
1225             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
1226                 /*
1227                  * mac80211-workaround to force deauth on failed auth cmd,
1228                  * requires us to remain in authenticating state to allow the
1229                  * second authentication attempt to be continued properly.
1230                  */
1231                 wpa_printf(MSG_DEBUG, "SME: Allow pending authentication to "
1232                            "proceed after disconnection event");
1233                 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1234                 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1235         }
1236 #endif /* CONFIG_SME */
1237 }
1238
1239
1240 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1241 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
1242                                                     void *sock_ctx)
1243 {
1244         struct wpa_supplicant *wpa_s = eloop_ctx;
1245
1246         if (!wpa_s->pending_mic_error_report)
1247                 return;
1248
1249         wpa_printf(MSG_DEBUG, "WPA: Sending pending MIC error report");
1250         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1251         wpa_s->pending_mic_error_report = 0;
1252 }
1253 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1254
1255
1256 static void
1257 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1258                                          union wpa_event_data *data)
1259 {
1260         int pairwise;
1261         struct os_time t;
1262
1263         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1264         pairwise = (data && data->michael_mic_failure.unicast);
1265         os_get_time(&t);
1266         if ((wpa_s->last_michael_mic_error &&
1267              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1268             wpa_s->pending_mic_error_report) {
1269                 if (wpa_s->pending_mic_error_report) {
1270                         /*
1271                          * Send the pending MIC error report immediately since
1272                          * we are going to start countermeasures and AP better
1273                          * do the same.
1274                          */
1275                         wpa_sm_key_request(wpa_s->wpa, 1,
1276                                            wpa_s->pending_mic_error_pairwise);
1277                 }
1278
1279                 /* Send the new MIC error report immediately since we are going
1280                  * to start countermeasures and AP better do the same.
1281                  */
1282                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1283
1284                 /* initialize countermeasures */
1285                 wpa_s->countermeasures = 1;
1286                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1287
1288                 /*
1289                  * Need to wait for completion of request frame. We do not get
1290                  * any callback for the message completion, so just wait a
1291                  * short while and hope for the best. */
1292                 os_sleep(0, 10000);
1293
1294                 wpa_drv_set_countermeasures(wpa_s, 1);
1295                 wpa_supplicant_deauthenticate(wpa_s,
1296                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
1297                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1298                                      wpa_s, NULL);
1299                 eloop_register_timeout(60, 0,
1300                                        wpa_supplicant_stop_countermeasures,
1301                                        wpa_s, NULL);
1302                 /* TODO: mark the AP rejected for 60 second. STA is
1303                  * allowed to associate with another AP.. */
1304         } else {
1305 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1306                 if (wpa_s->mic_errors_seen) {
1307                         /*
1308                          * Reduce the effectiveness of Michael MIC error
1309                          * reports as a means for attacking against TKIP if
1310                          * more than one MIC failure is noticed with the same
1311                          * PTK. We delay the transmission of the reports by a
1312                          * random time between 0 and 60 seconds in order to
1313                          * force the attacker wait 60 seconds before getting
1314                          * the information on whether a frame resulted in a MIC
1315                          * failure.
1316                          */
1317                         u8 rval[4];
1318                         int sec;
1319
1320                         if (os_get_random(rval, sizeof(rval)) < 0)
1321                                 sec = os_random() % 60;
1322                         else
1323                                 sec = WPA_GET_BE32(rval) % 60;
1324                         wpa_printf(MSG_DEBUG, "WPA: Delay MIC error report %d "
1325                                    "seconds", sec);
1326                         wpa_s->pending_mic_error_report = 1;
1327                         wpa_s->pending_mic_error_pairwise = pairwise;
1328                         eloop_cancel_timeout(
1329                                 wpa_supplicant_delayed_mic_error_report,
1330                                 wpa_s, NULL);
1331                         eloop_register_timeout(
1332                                 sec, os_random() % 1000000,
1333                                 wpa_supplicant_delayed_mic_error_report,
1334                                 wpa_s, NULL);
1335                 } else {
1336                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1337                 }
1338 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1339                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1340 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1341         }
1342         wpa_s->last_michael_mic_error = t.sec;
1343         wpa_s->mic_errors_seen++;
1344 }
1345
1346
1347 #ifdef CONFIG_TERMINATE_ONLASTIF
1348 static int any_interfaces(struct wpa_supplicant *head)
1349 {
1350         struct wpa_supplicant *wpa_s;
1351
1352         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1353                 if (!wpa_s->interface_removed)
1354                         return 1;
1355         return 0;
1356 }
1357 #endif /* CONFIG_TERMINATE_ONLASTIF */
1358
1359
1360 static void
1361 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1362                                       union wpa_event_data *data)
1363 {
1364         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1365                 return;
1366
1367         switch (data->interface_status.ievent) {
1368         case EVENT_INTERFACE_ADDED:
1369                 if (!wpa_s->interface_removed)
1370                         break;
1371                 wpa_s->interface_removed = 0;
1372                 wpa_printf(MSG_DEBUG, "Configured interface was added.");
1373                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1374                         wpa_printf(MSG_INFO, "Failed to initialize the driver "
1375                                    "after interface was added.");
1376                 }
1377                 break;
1378         case EVENT_INTERFACE_REMOVED:
1379                 wpa_printf(MSG_DEBUG, "Configured interface was removed.");
1380                 wpa_s->interface_removed = 1;
1381                 wpa_supplicant_mark_disassoc(wpa_s);
1382                 l2_packet_deinit(wpa_s->l2);
1383                 wpa_s->l2 = NULL;
1384 #ifdef CONFIG_TERMINATE_ONLASTIF
1385                 /* check if last interface */
1386                 if (!any_interfaces(wpa_s->global->ifaces))
1387                         eloop_terminate();
1388 #endif /* CONFIG_TERMINATE_ONLASTIF */
1389                 break;
1390         }
1391 }
1392
1393
1394 #ifdef CONFIG_PEERKEY
1395 static void
1396 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1397                               union wpa_event_data *data)
1398 {
1399         if (data == NULL)
1400                 return;
1401         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1402 }
1403 #endif /* CONFIG_PEERKEY */
1404
1405
1406 #ifdef CONFIG_IEEE80211R
1407 static void
1408 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1409                                  union wpa_event_data *data)
1410 {
1411         if (data == NULL)
1412                 return;
1413
1414         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1415                                     data->ft_ies.ies_len,
1416                                     data->ft_ies.ft_action,
1417                                     data->ft_ies.target_ap,
1418                                     data->ft_ies.ric_ies,
1419                                     data->ft_ies.ric_ies_len) < 0) {
1420                 /* TODO: prevent MLME/driver from trying to associate? */
1421         }
1422 }
1423 #endif /* CONFIG_IEEE80211R */
1424
1425
1426 #ifdef CONFIG_IBSS_RSN
1427 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1428                                                 union wpa_event_data *data)
1429 {
1430         if (data == NULL)
1431                 return;
1432         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1433 }
1434 #endif /* CONFIG_IBSS_RSN */
1435
1436
1437 #ifdef CONFIG_IEEE80211R
1438 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1439                          size_t len)
1440 {
1441         const u8 *sta_addr, *target_ap_addr;
1442         u16 status;
1443
1444         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1445         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1446                 return; /* only SME case supported for now */
1447         if (len < 1 + 2 * ETH_ALEN + 2)
1448                 return;
1449         if (data[0] != 2)
1450                 return; /* Only FT Action Response is supported for now */
1451         sta_addr = data + 1;
1452         target_ap_addr = data + 1 + ETH_ALEN;
1453         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1454         wpa_printf(MSG_DEBUG, "FT: Received FT Action Response: STA " MACSTR
1455                    " TargetAP " MACSTR " status %u",
1456                    MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1457
1458         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1459                 wpa_printf(MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1460                            " in FT Action Response", MAC2STR(sta_addr));
1461                 return;
1462         }
1463
1464         if (status) {
1465                 wpa_printf(MSG_DEBUG, "FT: FT Action Response indicates "
1466                            "failure (status code %d)", status);
1467                 /* TODO: report error to FT code(?) */
1468                 return;
1469         }
1470
1471         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1472                                     len - (1 + 2 * ETH_ALEN + 2), 1,
1473                                     target_ap_addr, NULL, 0) < 0)
1474                 return;
1475
1476 #ifdef CONFIG_SME
1477         {
1478                 struct wpa_bss *bss;
1479                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1480                 if (bss)
1481                         wpa_s->sme.freq = bss->freq;
1482                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1483                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1484                               WLAN_AUTH_FT);
1485         }
1486 #endif /* CONFIG_SME */
1487 }
1488 #endif /* CONFIG_IEEE80211R */
1489
1490
1491 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1492                           union wpa_event_data *data)
1493 {
1494         struct wpa_supplicant *wpa_s = ctx;
1495         u16 reason_code = 0;
1496
1497         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
1498             event != EVENT_INTERFACE_ENABLED &&
1499             event != EVENT_INTERFACE_STATUS) {
1500                 wpa_printf(MSG_DEBUG, "Ignore event %d while interface is "
1501                            "disabled", event);
1502                 return;
1503         }
1504
1505         wpa_printf(MSG_DEBUG, "Event %d received on interface %s",
1506                    event, wpa_s->ifname);
1507
1508         switch (event) {
1509         case EVENT_AUTH:
1510                 sme_event_auth(wpa_s, data);
1511                 break;
1512         case EVENT_ASSOC:
1513                 wpa_supplicant_event_assoc(wpa_s, data);
1514                 break;
1515         case EVENT_DISASSOC:
1516                 wpa_printf(MSG_DEBUG, "Disassociation notification");
1517                 if (data) {
1518                         wpa_printf(MSG_DEBUG, " * reason %u",
1519                                    data->disassoc_info.reason_code);
1520                         if (data->disassoc_info.addr)
1521                                 wpa_printf(MSG_DEBUG, " * address " MACSTR,
1522                                            MAC2STR(data->disassoc_info.addr));
1523                 }
1524 #ifdef CONFIG_AP
1525                 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
1526                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1527                                                data->disassoc_info.addr);
1528                         break;
1529                 }
1530 #endif /* CONFIG_AP */
1531                 if (data)
1532                         reason_code = data->deauth_info.reason_code;
1533                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1534                         sme_event_disassoc(wpa_s, data);
1535                 /* fall through */
1536         case EVENT_DEAUTH:
1537                 if (event == EVENT_DEAUTH) {
1538                         wpa_printf(MSG_DEBUG, "Deauthentication notification");
1539                         if (data) {
1540                                 reason_code = data->deauth_info.reason_code;
1541                                 wpa_printf(MSG_DEBUG, " * reason %u",
1542                                            data->deauth_info.reason_code);
1543                                 if (data->deauth_info.addr) {
1544                                         wpa_printf(MSG_DEBUG, " * address "
1545                                                    MACSTR,
1546                                                    MAC2STR(data->deauth_info.
1547                                                            addr));
1548                                 }
1549                         }
1550                 }
1551 #ifdef CONFIG_AP
1552                 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
1553                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1554                                                data->deauth_info.addr);
1555                         break;
1556                 }
1557 #endif /* CONFIG_AP */
1558                 wpa_supplicant_event_disassoc(wpa_s, reason_code);
1559                 break;
1560         case EVENT_MICHAEL_MIC_FAILURE:
1561                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
1562                 break;
1563 #ifndef CONFIG_NO_SCAN_PROCESSING
1564         case EVENT_SCAN_RESULTS:
1565                 wpa_supplicant_event_scan_results(wpa_s, data);
1566                 break;
1567 #endif /* CONFIG_NO_SCAN_PROCESSING */
1568         case EVENT_ASSOCINFO:
1569                 wpa_supplicant_event_associnfo(wpa_s, data);
1570                 break;
1571         case EVENT_INTERFACE_STATUS:
1572                 wpa_supplicant_event_interface_status(wpa_s, data);
1573                 break;
1574         case EVENT_PMKID_CANDIDATE:
1575                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
1576                 break;
1577 #ifdef CONFIG_PEERKEY
1578         case EVENT_STKSTART:
1579                 wpa_supplicant_event_stkstart(wpa_s, data);
1580                 break;
1581 #endif /* CONFIG_PEERKEY */
1582 #ifdef CONFIG_IEEE80211R
1583         case EVENT_FT_RESPONSE:
1584                 wpa_supplicant_event_ft_response(wpa_s, data);
1585                 break;
1586 #endif /* CONFIG_IEEE80211R */
1587 #ifdef CONFIG_IBSS_RSN
1588         case EVENT_IBSS_RSN_START:
1589                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
1590                 break;
1591 #endif /* CONFIG_IBSS_RSN */
1592         case EVENT_ASSOC_REJECT:
1593                 sme_event_assoc_reject(wpa_s, data);
1594                 break;
1595         case EVENT_AUTH_TIMED_OUT:
1596                 sme_event_auth_timed_out(wpa_s, data);
1597                 break;
1598         case EVENT_ASSOC_TIMED_OUT:
1599                 sme_event_assoc_timed_out(wpa_s, data);
1600                 break;
1601 #ifdef CONFIG_AP
1602         case EVENT_TX_STATUS:
1603                 if (wpa_s->ap_iface == NULL)
1604                         break;
1605                 switch (data->tx_status.type) {
1606                 case WLAN_FC_TYPE_MGMT:
1607                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
1608                                       data->tx_status.data_len,
1609                                       data->tx_status.stype,
1610                                       data->tx_status.ack);
1611                         break;
1612                 case WLAN_FC_TYPE_DATA:
1613                         ap_tx_status(wpa_s, data->tx_status.dst,
1614                                      data->tx_status.data,
1615                                      data->tx_status.data_len,
1616                                      data->tx_status.ack);
1617                         break;
1618                 }
1619                 break;
1620         case EVENT_RX_FROM_UNKNOWN:
1621                 if (wpa_s->ap_iface == NULL)
1622                         break;
1623                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame,
1624                                        data->rx_from_unknown.len);
1625                 break;
1626         case EVENT_RX_MGMT:
1627                 if (wpa_s->ap_iface == NULL)
1628                         break;
1629                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
1630                 break;
1631 #endif /* CONFIG_AP */
1632         case EVENT_RX_ACTION:
1633                 wpa_printf(MSG_DEBUG, "Received Action frame: SA=" MACSTR
1634                            " Category=%u DataLen=%d freq=%d MHz",
1635                            MAC2STR(data->rx_action.sa),
1636                            data->rx_action.category, (int) data->rx_action.len,
1637                            data->rx_action.freq);
1638 #ifdef CONFIG_IEEE80211R
1639                 if (data->rx_action.category == WLAN_ACTION_FT) {
1640                         ft_rx_action(wpa_s, data->rx_action.data,
1641                                      data->rx_action.len);
1642                         break;
1643                 }
1644 #endif /* CONFIG_IEEE80211R */
1645                 break;
1646 #ifdef CONFIG_CLIENT_MLME
1647         case EVENT_MLME_RX: {
1648                 struct ieee80211_rx_status rx_status;
1649                 os_memset(&rx_status, 0, sizeof(rx_status));
1650                 rx_status.freq = data->mlme_rx.freq;
1651                 rx_status.channel = data->mlme_rx.channel;
1652                 rx_status.ssi = data->mlme_rx.ssi;
1653                 ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len,
1654                                  &rx_status);
1655                 break;
1656         }
1657 #endif /* CONFIG_CLIENT_MLME */
1658         case EVENT_EAPOL_RX:
1659                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
1660                                         data->eapol_rx.data,
1661                                         data->eapol_rx.data_len);
1662                 break;
1663         case EVENT_SIGNAL_CHANGE:
1664                 bgscan_notify_signal_change(
1665                         wpa_s, data->signal_change.above_threshold,
1666                         data->signal_change.current_signal);
1667                 break;
1668         case EVENT_INTERFACE_ENABLED:
1669                 wpa_printf(MSG_DEBUG, "Interface was enabled");
1670                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
1671                         wpa_supplicant_set_state(wpa_s,
1672                                                  WPA_DISCONNECTED);
1673                         wpa_supplicant_req_scan(wpa_s, 0, 0);
1674                 }
1675                 break;
1676         case EVENT_INTERFACE_DISABLED:
1677                 wpa_printf(MSG_DEBUG, "Interface was disabled");
1678                 wpa_supplicant_mark_disassoc(wpa_s);
1679                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
1680                 break;
1681         default:
1682                 wpa_printf(MSG_INFO, "Unknown event %d", event);
1683                 break;
1684         }
1685 }