wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2011, 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 "p2p/p2p.h"
  32 #include "notify.h"
  33 #include "common/ieee802_11_defs.h"
  34 #include "common/ieee802_11_common.h"
  35 #include "crypto/random.h"
  36 #include "blacklist.h"
  37 #include "wpas_glue.h"
  38 #include "wps_supplicant.h"
  39 #include "ibss_rsn.h"
  40 #include "sme.h"
  41 #include "p2p_supplicant.h"
  42 #include "bgscan.h"
  43 #include "ap.h"
  44 #include "bss.h"
  45 #include "mlme.h"
  46 #include "scan.h"
  47
  48
  49 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  50 {
  51         struct wpa_ssid *ssid, *old_ssid;
  52
  53         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  54                 return 0;
  55
  56         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  57                 "information");
  58         ssid = wpa_supplicant_get_ssid(wpa_s);
  59         if (ssid == NULL) {
  60                 wpa_msg(wpa_s, MSG_INFO,
  61                         "No network configuration found for the current AP");
  62                 return -1;
  63         }
  64
  65         if (ssid->disabled) {
  66                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
  67                 return -1;
  68         }
  69
  70         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
  71                 "current AP");
  72         if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
  73                               WPA_KEY_MGMT_WPA_NONE |
  74                               WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
  75                               WPA_KEY_MGMT_PSK_SHA256 |
  76                               WPA_KEY_MGMT_IEEE8021X_SHA256)) {
  77                 u8 wpa_ie[80];
  78                 size_t wpa_ie_len = sizeof(wpa_ie);
  79                 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
  80                                           wpa_ie, &wpa_ie_len);
  81         } else {
  82                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  83         }
  84
  85         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
  86                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
  87         old_ssid = wpa_s->current_ssid;
  88         wpa_s->current_ssid = ssid;
  89         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
  90         wpa_supplicant_initiate_eapol(wpa_s);
  91         if (old_ssid != wpa_s->current_ssid)
  92                 wpas_notify_network_changed(wpa_s);
  93
  94         return 0;
  95 }
  96
  97
  98 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
  99                                                 void *sock_ctx)
 100 {
 101         struct wpa_supplicant *wpa_s = eloop_ctx;
 102
 103         if (wpa_s->countermeasures) {
 104                 wpa_s->countermeasures = 0;
 105                 wpa_drv_set_countermeasures(wpa_s, 0);
 106                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 107                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 108         }
 109 }
 110
 111
 112 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 113 {
 114         int bssid_changed;
 115
 116 #ifdef CONFIG_IBSS_RSN
 117         ibss_rsn_deinit(wpa_s->ibss_rsn);
 118         wpa_s->ibss_rsn = NULL;
 119 #endif /* CONFIG_IBSS_RSN */
 120
 121 #ifdef CONFIG_AP
 122         wpa_supplicant_ap_deinit(wpa_s);
 123 #endif /* CONFIG_AP */
 124
 125         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 126                 return;
 127
 128         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 129         wpa_s->conf->ap_scan = DEFAULT_AP_SCAN;
 130         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 131         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 132         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 133         wpa_s->current_bss = NULL;
 134         wpa_s->assoc_freq = 0;
 135 #ifdef CONFIG_IEEE80211R
 136 #ifdef CONFIG_SME
 137         if (wpa_s->sme.ft_ies)
 138                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 139 #endif /* CONFIG_SME */
 140 #endif /* CONFIG_IEEE80211R */
 141
 142         if (bssid_changed)
 143                 wpas_notify_bssid_changed(wpa_s);
 144
 145         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 146         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 147         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 148                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 149         wpa_s->ap_ies_from_associnfo = 0;
 150 }
 151
 152
 153 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 154 {
 155         struct wpa_ie_data ie;
 156         int pmksa_set = -1;
 157         size_t i;
 158
 159         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 160             ie.pmkid == NULL)
 161                 return;
 162
 163         for (i = 0; i < ie.num_pmkid; i++) {
 164                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 165                                                     ie.pmkid + i * PMKID_LEN,
 166                                                     NULL, NULL, 0);
 167                 if (pmksa_set == 0) {
 168                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 169                         break;
 170                 }
 171         }
 172
 173         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 174                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 175 }
 176
 177
 178 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 179                                                  union wpa_event_data *data)
 180 {
 181         if (data == NULL) {
 182                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 183                         "event");
 184                 return;
 185         }
 186         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 187                 " index=%d preauth=%d",
 188                 MAC2STR(data->pmkid_candidate.bssid),
 189                 data->pmkid_candidate.index,
 190                 data->pmkid_candidate.preauth);
 191
 192         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 193                             data->pmkid_candidate.index,
 194                             data->pmkid_candidate.preauth);
 195 }
 196
 197
 198 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 199 {
 200         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 201             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 202                 return 0;
 203
 204 #ifdef IEEE8021X_EAPOL
 205         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 206             wpa_s->current_ssid &&
 207             !(wpa_s->current_ssid->eapol_flags &
 208               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 209                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 210                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 211                  * plaintext or static WEP keys). */
 212                 return 0;
 213         }
 214 #endif /* IEEE8021X_EAPOL */
 215
 216         return 1;
 217 }
 218
 219
 220 /**
 221  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 222  * @wpa_s: pointer to wpa_supplicant data
 223  * @ssid: Configuration data for the network
 224  * Returns: 0 on success, -1 on failure
 225  *
 226  * This function is called when starting authentication with a network that is
 227  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 228  */
 229 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 230                               struct wpa_ssid *ssid)
 231 {
 232 #ifdef IEEE8021X_EAPOL
 233         int aka = 0, sim = 0, type;
 234
 235         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 236                 return 0;
 237
 238         if (ssid->eap.eap_methods == NULL) {
 239                 sim = 1;
 240                 aka = 1;
 241         } else {
 242                 struct eap_method_type *eap = ssid->eap.eap_methods;
 243                 while (eap->vendor != EAP_VENDOR_IETF ||
 244                        eap->method != EAP_TYPE_NONE) {
 245                         if (eap->vendor == EAP_VENDOR_IETF) {
 246                                 if (eap->method == EAP_TYPE_SIM)
 247                                         sim = 1;
 248                                 else if (eap->method == EAP_TYPE_AKA)
 249                                         aka = 1;
 250                         }
 251                         eap++;
 252                 }
 253         }
 254
 255         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 256                 sim = 0;
 257         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
 258                 aka = 0;
 259
 260         if (!sim && !aka) {
 261                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 262                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 263                         "enabled");
 264                 return 0;
 265         }
 266
 267         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 268                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 269         if (sim && aka)
 270                 type = SCARD_TRY_BOTH;
 271         else if (aka)
 272                 type = SCARD_USIM_ONLY;
 273         else
 274                 type = SCARD_GSM_SIM_ONLY;
 275
 276         wpa_s->scard = scard_init(type);
 277         if (wpa_s->scard == NULL) {
 278                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 279                         "(pcsc-lite)");
 280                 return -1;
 281         }
 282         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 283         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 284 #endif /* IEEE8021X_EAPOL */
 285
 286         return 0;
 287 }
 288
 289
 290 #ifndef CONFIG_NO_SCAN_PROCESSING
 291 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
 292                                         struct wpa_ssid *ssid)
 293 {
 294         int i, privacy = 0;
 295
 296         if (ssid->mixed_cell)
 297                 return 1;
 298
 299 #ifdef CONFIG_WPS
 300         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 301                 return 1;
 302 #endif /* CONFIG_WPS */
 303
 304         for (i = 0; i < NUM_WEP_KEYS; i++) {
 305                 if (ssid->wep_key_len[i]) {
 306                         privacy = 1;
 307                         break;
 308                 }
 309         }
 310 #ifdef IEEE8021X_EAPOL
 311         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 312             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 313                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 314                 privacy = 1;
 315 #endif /* IEEE8021X_EAPOL */
 316
 317         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 318                 privacy = 1;
 319
 320         if (bss->caps & IEEE80211_CAP_PRIVACY)
 321                 return privacy;
 322         return !privacy;
 323 }
 324
 325
 326 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 327                                          struct wpa_ssid *ssid,
 328                                          struct wpa_scan_res *bss)
 329 {
 330         struct wpa_ie_data ie;
 331         int proto_match = 0;
 332         const u8 *rsn_ie, *wpa_ie;
 333         int ret;
 334         int wep_ok;
 335
 336         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 337         if (ret >= 0)
 338                 return ret;
 339
 340         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 341         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 342                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 343                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 344                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 345
 346         rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 347         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 348                 proto_match++;
 349
 350                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 351                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 352                                 "failed");
 353                         break;
 354                 }
 355
 356                 if (wep_ok &&
 357                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 358                 {
 359                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 360                                 "in RSN IE");
 361                         return 1;
 362                 }
 363
 364                 if (!(ie.proto & ssid->proto)) {
 365                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 366                                 "mismatch");
 367                         break;
 368                 }
 369
 370                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 371                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 372                                 "cipher mismatch");
 373                         break;
 374                 }
 375
 376                 if (!(ie.group_cipher & ssid->group_cipher)) {
 377                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 378                                 "cipher mismatch");
 379                         break;
 380                 }
 381
 382                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 383                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 384                                 "mismatch");
 385                         break;
 386                 }
 387
 388 #ifdef CONFIG_IEEE80211W
 389                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 390                     ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
 391                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 392                                 "frame protection");
 393                         break;
 394                 }
 395 #endif /* CONFIG_IEEE80211W */
 396
 397                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 398                 return 1;
 399         }
 400
 401         wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 402         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 403                 proto_match++;
 404
 405                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 406                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 407                                 "failed");
 408                         break;
 409                 }
 410
 411                 if (wep_ok &&
 412                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 413                 {
 414                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 415                                 "in WPA IE");
 416                         return 1;
 417                 }
 418
 419                 if (!(ie.proto & ssid->proto)) {
 420                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 421                                 "mismatch");
 422                         break;
 423                 }
 424
 425                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 426                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 427                                 "cipher mismatch");
 428                         break;
 429                 }
 430
 431                 if (!(ie.group_cipher & ssid->group_cipher)) {
 432                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 433                                 "cipher mismatch");
 434                         break;
 435                 }
 436
 437                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 438                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 439                                 "mismatch");
 440                         break;
 441                 }
 442
 443                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 444                 return 1;
 445         }
 446
 447         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 448             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 449                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 450                 return 0;
 451         }
 452
 453         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 454                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 455                 return 1;
 456         }
 457
 458         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 459                 "WPA/WPA2");
 460
 461         return 0;
 462 }
 463
 464
 465 static int freq_allowed(int *freqs, int freq)
 466 {
 467         int i;
 468
 469         if (freqs == NULL)
 470                 return 1;
 471
 472         for (i = 0; freqs[i]; i++)
 473                 if (freqs[i] == freq)
 474                         return 1;
 475         return 0;
 476 }
 477
 478
 479 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 480                                             int i, struct wpa_scan_res *bss,
 481                                             struct wpa_ssid *group)
 482 {
 483         const u8 *ssid_;
 484         u8 wpa_ie_len, rsn_ie_len, ssid_len;
 485         int wpa;
 486         struct wpa_blacklist *e;
 487         const u8 *ie;
 488         struct wpa_ssid *ssid;
 489
 490         ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 491         ssid_ = ie ? ie + 2 : (u8 *) "";
 492         ssid_len = ie ? ie[1] : 0;
 493
 494         ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 495         wpa_ie_len = ie ? ie[1] : 0;
 496
 497         ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 498         rsn_ie_len = ie ? ie[1] : 0;
 499
 500         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 501                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
 502                 i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
 503                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 504                 wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
 505
 506         e = wpa_blacklist_get(wpa_s, bss->bssid);
 507         if (e) {
 508                 int limit = 1;
 509                 if (wpa_supplicant_enabled_networks(wpa_s->conf) == 1) {
 510                         /*
 511                          * When only a single network is enabled, we can
 512                          * trigger blacklisting on the first failure. This
 513                          * should not be done with multiple enabled networks to
 514                          * avoid getting forced to move into a worse ESS on
 515                          * single error if there are no other BSSes of the
 516                          * current ESS.
 517                          */
 518                         limit = 0;
 519                 }
 520                 if (e->count > limit) {
 521                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 522                                 "(count=%d limit=%d)", e->count, limit);
 523                         return NULL;
 524                 }
 525         }
 526
 527         if (ssid_len == 0) {
 528                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 529                 return NULL;
 530         }
 531
 532         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 533
 534         for (ssid = group; ssid; ssid = ssid->pnext) {
 535                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 536
 537                 if (ssid->disabled) {
 538                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 539                         continue;
 540                 }
 541
 542 #ifdef CONFIG_WPS
 543                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 544                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 545                                 "(WPS)");
 546                         continue;
 547                 }
 548
 549                 if (wpa && ssid->ssid_len == 0 &&
 550                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 551                         check_ssid = 0;
 552
 553                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 554                         /* Only allow wildcard SSID match if an AP
 555                          * advertises active WPS operation that matches
 556                          * with our mode. */
 557                         check_ssid = 1;
 558                         if (ssid->ssid_len == 0 &&
 559                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 560                                 check_ssid = 0;
 561                 }
 562 #endif /* CONFIG_WPS */
 563
 564                 if (check_ssid &&
 565                     (ssid_len != ssid->ssid_len ||
 566                      os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
 567                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 568                         continue;
 569                 }
 570
 571                 if (ssid->bssid_set &&
 572                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 573                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 574                         continue;
 575                 }
 576
 577                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 578                         continue;
 579
 580                 if (!wpa &&
 581                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 582                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 583                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 584                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 585                                 "not allowed");
 586                         continue;
 587                 }
 588
 589                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 590                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 591                                 "mismatch");
 592                         continue;
 593                 }
 594
 595                 if (bss->caps & IEEE80211_CAP_IBSS) {
 596                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - IBSS (adhoc) "
 597                                 "network");
 598                         continue;
 599                 }
 600
 601                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 602                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 603                                 "allowed");
 604                         continue;
 605                 }
 606
 607 #ifdef CONFIG_P2P
 608                 /*
 609                  * TODO: skip the AP if its P2P IE has Group Formation
 610                  * bit set in the P2P Group Capability Bitmap and we
 611                  * are not in Group Formation with that device.
 612                  */
 613 #endif /* CONFIG_P2P */
 614
 615                 /* Matching configuration found */
 616                 return ssid;
 617         }
 618
 619         /* No matching configuration found */
 620         return NULL;
 621 }
 622
 623
 624 static struct wpa_bss *
 625 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 626                           struct wpa_scan_results *scan_res,
 627                           struct wpa_ssid *group,
 628                           struct wpa_ssid **selected_ssid)
 629 {
 630         size_t i;
 631
 632         wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 633                 group->priority);
 634
 635         for (i = 0; i < scan_res->num; i++) {
 636                 struct wpa_scan_res *bss = scan_res->res[i];
 637                 const u8 *ie, *ssid;
 638                 u8 ssid_len;
 639
 640                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
 641                 if (!*selected_ssid)
 642                         continue;
 643
 644                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 645                 ssid = ie ? ie + 2 : (u8 *) "";
 646                 ssid_len = ie ? ie[1] : 0;
 647
 648                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 649                         " ssid='%s'",
 650                         MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
 651                 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
 652         }
 653
 654         return NULL;
 655 }
 656
 657
 658 static struct wpa_bss *
 659 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 660                             struct wpa_scan_results *scan_res,
 661                             struct wpa_ssid **selected_ssid)
 662 {
 663         struct wpa_bss *selected = NULL;
 664         int prio;
 665
 666         while (selected == NULL) {
 667                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 668                         selected = wpa_supplicant_select_bss(
 669                                 wpa_s, scan_res, wpa_s->conf->pssid[prio],
 670                                 selected_ssid);
 671                         if (selected)
 672                                 break;
 673                 }
 674
 675                 if (selected == NULL && wpa_s->blacklist) {
 676                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
 677                                 "blacklist and try again");
 678                         wpa_blacklist_clear(wpa_s);
 679                         wpa_s->blacklist_cleared++;
 680                 } else if (selected == NULL)
 681                         break;
 682         }
 683
 684         return selected;
 685 }
 686
 687
 688 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 689                                         int timeout_sec, int timeout_usec)
 690 {
 691         if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
 692                 /*
 693                  * No networks are enabled; short-circuit request so
 694                  * we don't wait timeout seconds before transitioning
 695                  * to INACTIVE state.
 696                  */
 697                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 698                 return;
 699         }
 700         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 701 }
 702
 703
 704 void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 705                             struct wpa_bss *selected,
 706                             struct wpa_ssid *ssid)
 707 {
 708         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 709                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 710                         "PBC session overlap");
 711 #ifdef CONFIG_P2P
 712                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
 713                         return;
 714 #endif /* CONFIG_P2P */
 715
 716 #ifdef CONFIG_WPS
 717                 wpas_wps_cancel(wpa_s);
 718 #endif /* CONFIG_WPS */
 719                 return;
 720         }
 721
 722         /*
 723          * Do not trigger new association unless the BSSID has changed or if
 724          * reassociation is requested. If we are in process of associating with
 725          * the selected BSSID, do not trigger new attempt.
 726          */
 727         if (wpa_s->reassociate ||
 728             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 729              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
 730                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
 731               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 732               0))) {
 733                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 734                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 735                         return;
 736                 }
 737                 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
 738                         "reassociate: %d  selected: "MACSTR "  bssid: " MACSTR
 739                         "  pending: " MACSTR "  wpa_state: %s",
 740                         wpa_s->reassociate, MAC2STR(selected->bssid),
 741                         MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
 742                         wpa_supplicant_state_txt(wpa_s->wpa_state));
 743                 wpa_supplicant_associate(wpa_s, selected, ssid);
 744         } else {
 745                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
 746                         "selected AP");
 747         }
 748 }
 749
 750
 751 static struct wpa_ssid *
 752 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 753 {
 754         int prio;
 755         struct wpa_ssid *ssid;
 756
 757         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 758                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 759                 {
 760                         if (ssid->disabled)
 761                                 continue;
 762                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 763                             ssid->mode == IEEE80211_MODE_AP)
 764                                 return ssid;
 765                 }
 766         }
 767         return NULL;
 768 }
 769
 770
 771 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 772  * on BSS added and BSS changed events */
 773 static void wpa_supplicant_rsn_preauth_scan_results(
 774         struct wpa_supplicant *wpa_s)
 775 {
 776         struct wpa_bss *bss;
 777
 778         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 779                 return;
 780
 781         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 782                 const u8 *ssid, *rsn;
 783
 784                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
 785                 if (ssid == NULL)
 786                         continue;
 787
 788                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 789                 if (rsn == NULL)
 790                         continue;
 791
 792                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
 793         }
 794
 795 }
 796
 797
 798 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
 799                                        struct wpa_bss *selected,
 800                                        struct wpa_ssid *ssid,
 801                                        struct wpa_scan_results *scan_res)
 802 {
 803         size_t i;
 804         struct wpa_scan_res *current_bss = NULL;
 805         int min_diff;
 806
 807         if (wpa_s->reassociate)
 808                 return 1; /* explicit request to reassociate */
 809         if (wpa_s->wpa_state < WPA_ASSOCIATED)
 810                 return 1; /* we are not associated; continue */
 811         if (wpa_s->current_ssid == NULL)
 812                 return 1; /* unknown current SSID */
 813         if (wpa_s->current_ssid != ssid)
 814                 return 1; /* different network block */
 815
 816         for (i = 0; i < scan_res->num; i++) {
 817                 struct wpa_scan_res *res = scan_res->res[i];
 818                 const u8 *ie;
 819                 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
 820                         continue;
 821
 822                 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 823                 if (ie == NULL)
 824                         continue;
 825                 if (ie[1] != wpa_s->current_ssid->ssid_len ||
 826                     os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
 827                         continue;
 828                 current_bss = res;
 829                 break;
 830         }
 831
 832         if (!current_bss)
 833                 return 1; /* current BSS not seen in scan results */
 834
 835         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
 836         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
 837                 MAC2STR(current_bss->bssid), current_bss->level);
 838         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
 839                 MAC2STR(selected->bssid), selected->level);
 840
 841         if (wpa_s->current_ssid->bssid_set &&
 842             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
 843             0) {
 844                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
 845                         "has preferred BSSID");
 846                 return 1;
 847         }
 848
 849         min_diff = 2;
 850         if (current_bss->level < 0) {
 851                 if (current_bss->level < -85)
 852                         min_diff = 1;
 853                 else if (current_bss->level < -80)
 854                         min_diff = 2;
 855                 else if (current_bss->level < -75)
 856                         min_diff = 3;
 857                 else if (current_bss->level < -70)
 858                         min_diff = 4;
 859                 else
 860                         min_diff = 5;
 861         }
 862         if (abs(current_bss->level - selected->level) < min_diff) {
 863                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
 864                         "in signal level");
 865                 return 0;
 866         }
 867
 868         return 1;
 869 }
 870
 871 /* Return < 0 if no scan results could be fetched. */
 872 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 873                                               union wpa_event_data *data)
 874 {
 875         struct wpa_bss *selected;
 876         struct wpa_ssid *ssid = NULL;
 877         struct wpa_scan_results *scan_res;
 878         int ap = 0;
 879
 880 #ifdef CONFIG_AP
 881         if (wpa_s->ap_iface)
 882                 ap = 1;
 883 #endif /* CONFIG_AP */
 884
 885         wpa_supplicant_notify_scanning(wpa_s, 0);
 886
 887         scan_res = wpa_supplicant_get_scan_results(wpa_s,
 888                                                    data ? &data->scan_info :
 889                                                    NULL, 1);
 890         if (scan_res == NULL) {
 891                 if (wpa_s->conf->ap_scan == 2 || ap)
 892                         return -1;
 893                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
 894                         "scanning again");
 895                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
 896                 return -1;
 897         }
 898
 899 #ifndef CONFIG_NO_RANDOM_POOL
 900         size_t i, num;
 901         num = scan_res->num;
 902         if (num > 10)
 903                 num = 10;
 904         for (i = 0; i < num; i++) {
 905                 u8 buf[5];
 906                 struct wpa_scan_res *res = scan_res->res[i];
 907                 buf[0] = res->bssid[5];
 908                 buf[1] = res->qual & 0xff;
 909                 buf[2] = res->noise & 0xff;
 910                 buf[3] = res->level & 0xff;
 911                 buf[4] = res->tsf & 0xff;
 912                 random_add_randomness(buf, sizeof(buf));
 913         }
 914 #endif /* CONFIG_NO_RANDOM_POOL */
 915
 916         if (wpa_s->scan_res_handler) {
 917                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
 918                                          struct wpa_scan_results *scan_res);
 919
 920                 scan_res_handler = wpa_s->scan_res_handler;
 921                 wpa_s->scan_res_handler = NULL;
 922                 scan_res_handler(wpa_s, scan_res);
 923
 924                 wpa_scan_results_free(scan_res);
 925                 return 0;
 926         }
 927
 928         if (ap) {
 929                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
 930 #ifdef CONFIG_AP
 931                 if (wpa_s->ap_iface->scan_cb)
 932                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
 933 #endif /* CONFIG_AP */
 934                 wpa_scan_results_free(scan_res);
 935                 return 0;
 936         }
 937
 938         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
 939         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
 940         wpas_notify_scan_results(wpa_s);
 941
 942         wpas_notify_scan_done(wpa_s, 1);
 943
 944         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
 945                 wpa_scan_results_free(scan_res);
 946                 return 0;
 947         }
 948
 949         if (wpa_s->disconnected) {
 950                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 951                 wpa_scan_results_free(scan_res);
 952                 return 0;
 953         }
 954
 955         if (bgscan_notify_scan(wpa_s, scan_res) == 1) {
 956                 wpa_scan_results_free(scan_res);
 957                 return 0;
 958         }
 959
 960         selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
 961
 962         if (selected) {
 963                 int skip;
 964                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
 965                                                     scan_res);
 966                 wpa_scan_results_free(scan_res);
 967                 if (skip)
 968                         return 0;
 969                 wpa_supplicant_connect(wpa_s, selected, ssid);
 970                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
 971         } else {
 972                 wpa_scan_results_free(scan_res);
 973                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
 974                 ssid = wpa_supplicant_pick_new_network(wpa_s);
 975                 if (ssid) {
 976                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
 977                         wpa_supplicant_associate(wpa_s, NULL, ssid);
 978                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
 979                 } else {
 980                         int timeout_sec = wpa_s->scan_interval;
 981                         int timeout_usec = 0;
 982 #ifdef CONFIG_P2P
 983                         if (wpa_s->p2p_in_provisioning) {
 984                                 /*
 985                                  * Use shorter wait during P2P Provisioning
 986                                  * state to speed up group formation.
 987                                  */
 988                                 timeout_sec = 0;
 989                                 timeout_usec = 250000;
 990                         }
 991 #endif /* CONFIG_P2P */
 992                         wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
 993                                                     timeout_usec);
 994                 }
 995         }
 996         return 0;
 997 }
 998
 999
1000 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1001                                               union wpa_event_data *data)
1002 {
1003         const char *rn, *rn2;
1004         struct wpa_supplicant *ifs;
1005
1006         if (_wpa_supplicant_event_scan_results(wpa_s, data) < 0) {
1007                 /*
1008                  * If no scan results could be fetched, then no need to
1009                  * notify those interfaces that did not actually request
1010                  * this scan.
1011                  */
1012                 return;
1013         }
1014
1015         /*
1016          * Check other interfaces to see if they have the same radio-name. If
1017          * so, they get updated with this same scan info.
1018          */
1019         if (!wpa_s->driver->get_radio_name)
1020                 return;
1021
1022         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1023         if (rn == NULL || rn[0] == '\0')
1024                 return;
1025
1026         wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1027                 "sharing same radio (%s) in event_scan_results", rn);
1028
1029         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1030                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1031                         continue;
1032
1033                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1034                 if (rn2 && os_strcmp(rn, rn2) == 0) {
1035                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1036                                    "sibling", ifs->ifname);
1037                         _wpa_supplicant_event_scan_results(ifs, data);
1038                 }
1039         }
1040 }
1041
1042 #endif /* CONFIG_NO_SCAN_PROCESSING */
1043
1044
1045 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1046                                           union wpa_event_data *data)
1047 {
1048         int l, len, found = 0, wpa_found, rsn_found;
1049         const u8 *p;
1050
1051         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1052         if (data->assoc_info.req_ies)
1053                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1054                             data->assoc_info.req_ies_len);
1055         if (data->assoc_info.resp_ies) {
1056                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1057                             data->assoc_info.resp_ies_len);
1058 #ifdef CONFIG_TDLS
1059                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1060                                         data->assoc_info.resp_ies_len);
1061 #endif /* CONFIG_TDLS */
1062         }
1063         if (data->assoc_info.beacon_ies)
1064                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1065                             data->assoc_info.beacon_ies,
1066                             data->assoc_info.beacon_ies_len);
1067         if (data->assoc_info.freq)
1068                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1069                         data->assoc_info.freq);
1070
1071         p = data->assoc_info.req_ies;
1072         l = data->assoc_info.req_ies_len;
1073
1074         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1075         while (p && l >= 2) {
1076                 len = p[1] + 2;
1077                 if (len > l) {
1078                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1079                                     p, l);
1080                         break;
1081                 }
1082                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1083                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1084                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1085                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1086                                 break;
1087                         found = 1;
1088                         wpa_find_assoc_pmkid(wpa_s);
1089                         break;
1090                 }
1091                 l -= len;
1092                 p += len;
1093         }
1094         if (!found && data->assoc_info.req_ies)
1095                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1096
1097 #ifdef CONFIG_IEEE80211R
1098 #ifdef CONFIG_SME
1099         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1100                 u8 bssid[ETH_ALEN];
1101                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1102                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1103                                                  data->assoc_info.resp_ies,
1104                                                  data->assoc_info.resp_ies_len,
1105                                                  bssid) < 0) {
1106                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1107                                 "Reassociation Response failed");
1108                         wpa_supplicant_deauthenticate(
1109                                 wpa_s, WLAN_REASON_INVALID_IE);
1110                         return -1;
1111                 }
1112         }
1113
1114         p = data->assoc_info.resp_ies;
1115         l = data->assoc_info.resp_ies_len;
1116
1117 #ifdef CONFIG_WPS_STRICT
1118         if (p && wpa_s->current_ssid &&
1119             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1120                 struct wpabuf *wps;
1121                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1122                 if (wps == NULL) {
1123                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1124                                 "include WPS IE in (Re)Association Response");
1125                         return -1;
1126                 }
1127
1128                 if (wps_validate_assoc_resp(wps) < 0) {
1129                         wpabuf_free(wps);
1130                         wpa_supplicant_deauthenticate(
1131                                 wpa_s, WLAN_REASON_INVALID_IE);
1132                         return -1;
1133                 }
1134                 wpabuf_free(wps);
1135         }
1136 #endif /* CONFIG_WPS_STRICT */
1137
1138         /* Go through the IEs and make a copy of the MDIE, if present. */
1139         while (p && l >= 2) {
1140                 len = p[1] + 2;
1141                 if (len > l) {
1142                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1143                                     p, l);
1144                         break;
1145                 }
1146                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1147                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1148                         wpa_s->sme.ft_used = 1;
1149                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1150                                   MOBILITY_DOMAIN_ID_LEN);
1151                         break;
1152                 }
1153                 l -= len;
1154                 p += len;
1155         }
1156 #endif /* CONFIG_SME */
1157
1158         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1159                              data->assoc_info.resp_ies_len);
1160 #endif /* CONFIG_IEEE80211R */
1161
1162         /* WPA/RSN IE from Beacon/ProbeResp */
1163         p = data->assoc_info.beacon_ies;
1164         l = data->assoc_info.beacon_ies_len;
1165
1166         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1167          */
1168         wpa_found = rsn_found = 0;
1169         while (p && l >= 2) {
1170                 len = p[1] + 2;
1171                 if (len > l) {
1172                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1173                                     p, l);
1174                         break;
1175                 }
1176                 if (!wpa_found &&
1177                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1178                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1179                         wpa_found = 1;
1180                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1181                 }
1182
1183                 if (!rsn_found &&
1184                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1185                         rsn_found = 1;
1186                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1187                 }
1188
1189                 l -= len;
1190                 p += len;
1191         }
1192
1193         if (!wpa_found && data->assoc_info.beacon_ies)
1194                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1195         if (!rsn_found && data->assoc_info.beacon_ies)
1196                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1197         if (wpa_found || rsn_found)
1198                 wpa_s->ap_ies_from_associnfo = 1;
1199
1200         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1201             wpa_s->assoc_freq != data->assoc_info.freq) {
1202                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1203                            "%u to %u MHz",
1204                            wpa_s->assoc_freq, data->assoc_info.freq);
1205                 wpa_supplicant_update_scan_results(wpa_s);
1206         }
1207
1208         wpa_s->assoc_freq = data->assoc_info.freq;
1209
1210         return 0;
1211 }
1212
1213
1214 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1215                                        union wpa_event_data *data)
1216 {
1217         u8 bssid[ETH_ALEN];
1218         int ft_completed;
1219         int bssid_changed;
1220         struct wpa_driver_capa capa;
1221
1222 #ifdef CONFIG_AP
1223         if (wpa_s->ap_iface) {
1224                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1225                                     data->assoc_info.addr,
1226                                     data->assoc_info.req_ies,
1227                                     data->assoc_info.req_ies_len,
1228                                     data->assoc_info.reassoc);
1229                 return;
1230         }
1231 #endif /* CONFIG_AP */
1232
1233         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1234         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1235                 return;
1236
1237         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1238         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1239                 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1240         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
1241             (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1242              os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
1243                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1244                         MACSTR, MAC2STR(bssid));
1245                 random_add_randomness(bssid, ETH_ALEN);
1246                 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1247                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1248                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1249                 if (bssid_changed)
1250                         wpas_notify_bssid_changed(wpa_s);
1251
1252                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1253                         wpa_clear_keys(wpa_s, bssid);
1254                 }
1255                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1256                         wpa_supplicant_disassociate(
1257                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1258                         return;
1259                 }
1260                 if (wpa_s->current_ssid) {
1261                         struct wpa_bss *bss = NULL;
1262                         struct wpa_ssid *ssid = wpa_s->current_ssid;
1263                         if (ssid->ssid_len > 0)
1264                                 bss = wpa_bss_get(wpa_s, bssid,
1265                                                   ssid->ssid, ssid->ssid_len);
1266                         if (!bss)
1267                                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1268                         if (bss)
1269                                 wpa_s->current_bss = bss;
1270                 }
1271         }
1272
1273 #ifdef CONFIG_SME
1274         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1275         wpa_s->sme.prev_bssid_set = 1;
1276 #endif /* CONFIG_SME */
1277
1278         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1279         if (wpa_s->current_ssid) {
1280                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1281                  * initialized before association, but for other modes,
1282                  * initialize PC/SC here, if the current configuration needs
1283                  * smartcard or SIM/USIM. */
1284                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1285         }
1286         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1287         if (wpa_s->l2)
1288                 l2_packet_notify_auth_start(wpa_s->l2);
1289
1290         /*
1291          * Set portEnabled first to FALSE in order to get EAP state machine out
1292          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1293          * state machine may transit to AUTHENTICATING state based on obsolete
1294          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1295          * AUTHENTICATED without ever giving chance to EAP state machine to
1296          * reset the state.
1297          */
1298         if (!ft_completed) {
1299                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1300                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1301         }
1302         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1303                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1304         /* 802.1X::portControl = Auto */
1305         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1306         wpa_s->eapol_received = 0;
1307         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1308             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1309             (wpa_s->current_ssid &&
1310              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1311                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1312                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1313         } else if (!ft_completed) {
1314                 /* Timeout for receiving the first EAPOL packet */
1315                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1316         }
1317         wpa_supplicant_cancel_scan(wpa_s);
1318
1319         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1320             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1321                 /*
1322                  * We are done; the driver will take care of RSN 4-way
1323                  * handshake.
1324                  */
1325                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1326                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1327                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1328                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1329         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1330                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1331                 /*
1332                  * The driver will take care of RSN 4-way handshake, so we need
1333                  * to allow EAPOL supplicant to complete its work without
1334                  * waiting for WPA supplicant.
1335                  */
1336                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1337         } else if (ft_completed) {
1338                 /*
1339                  * FT protocol completed - make sure EAPOL state machine ends
1340                  * up in authenticated.
1341                  */
1342                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1343                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1344                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1345                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1346         }
1347
1348         if (wpa_s->pending_eapol_rx) {
1349                 struct os_time now, age;
1350                 os_get_time(&now);
1351                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1352                 if (age.sec == 0 && age.usec < 100000 &&
1353                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1354                     0) {
1355                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1356                                 "frame that was received just before "
1357                                 "association notification");
1358                         wpa_supplicant_rx_eapol(
1359                                 wpa_s, wpa_s->pending_eapol_rx_src,
1360                                 wpabuf_head(wpa_s->pending_eapol_rx),
1361                                 wpabuf_len(wpa_s->pending_eapol_rx));
1362                 }
1363                 wpabuf_free(wpa_s->pending_eapol_rx);
1364                 wpa_s->pending_eapol_rx = NULL;
1365         }
1366
1367         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1368              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1369             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1370             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1371                 /* Set static WEP keys again */
1372                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1373         }
1374
1375 #ifdef CONFIG_IBSS_RSN
1376         if (wpa_s->current_ssid &&
1377             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1378             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1379             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1380             wpa_s->ibss_rsn == NULL) {
1381                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1382                 if (!wpa_s->ibss_rsn) {
1383                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1384                         wpa_supplicant_deauthenticate(
1385                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1386                         return;
1387                 }
1388
1389                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1390         }
1391 #endif /* CONFIG_IBSS_RSN */
1392 }
1393
1394
1395 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1396                                           u16 reason_code)
1397 {
1398         const u8 *bssid;
1399         int authenticating;
1400         u8 prev_pending_bssid[ETH_ALEN];
1401
1402         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1403         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1404
1405         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1406                 /*
1407                  * At least Host AP driver and a Prism3 card seemed to be
1408                  * generating streams of disconnected events when configuring
1409                  * IBSS for WPA-None. Ignore them for now.
1410                  */
1411                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1412                         "IBSS/WPA-None mode");
1413                 return;
1414         }
1415
1416         if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1417             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1418                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1419                         "pre-shared key may be incorrect");
1420         }
1421         if (!wpa_s->auto_reconnect_disabled ||
1422             wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1423                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect enabled: try to "
1424                         "reconnect (wps=%d)",
1425                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS);
1426                 if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1427                         wpa_supplicant_req_scan(wpa_s, 0, 500000);
1428         } else {
1429                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect disabled: do not "
1430                         "try to re-connect");
1431                 wpa_s->reassociate = 0;
1432                 wpa_s->disconnected = 1;
1433         }
1434         bssid = wpa_s->bssid;
1435         if (is_zero_ether_addr(bssid))
1436                 bssid = wpa_s->pending_bssid;
1437         wpas_connection_failed(wpa_s, bssid);
1438         wpa_sm_notify_disassoc(wpa_s->wpa);
1439         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1440                 " reason=%d",
1441                 MAC2STR(bssid), reason_code);
1442         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1443                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1444                 wpa_s->keys_cleared = 0;
1445                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1446         }
1447         wpa_supplicant_mark_disassoc(wpa_s);
1448
1449         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1450                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
1451 }
1452
1453
1454 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1455 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
1456                                                     void *sock_ctx)
1457 {
1458         struct wpa_supplicant *wpa_s = eloop_ctx;
1459
1460         if (!wpa_s->pending_mic_error_report)
1461                 return;
1462
1463         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
1464         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1465         wpa_s->pending_mic_error_report = 0;
1466 }
1467 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1468
1469
1470 static void
1471 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1472                                          union wpa_event_data *data)
1473 {
1474         int pairwise;
1475         struct os_time t;
1476
1477         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1478         pairwise = (data && data->michael_mic_failure.unicast);
1479         os_get_time(&t);
1480         if ((wpa_s->last_michael_mic_error &&
1481              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1482             wpa_s->pending_mic_error_report) {
1483                 if (wpa_s->pending_mic_error_report) {
1484                         /*
1485                          * Send the pending MIC error report immediately since
1486                          * we are going to start countermeasures and AP better
1487                          * do the same.
1488                          */
1489                         wpa_sm_key_request(wpa_s->wpa, 1,
1490                                            wpa_s->pending_mic_error_pairwise);
1491                 }
1492
1493                 /* Send the new MIC error report immediately since we are going
1494                  * to start countermeasures and AP better do the same.
1495                  */
1496                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1497
1498                 /* initialize countermeasures */
1499                 wpa_s->countermeasures = 1;
1500                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1501
1502                 /*
1503                  * Need to wait for completion of request frame. We do not get
1504                  * any callback for the message completion, so just wait a
1505                  * short while and hope for the best. */
1506                 os_sleep(0, 10000);
1507
1508                 wpa_drv_set_countermeasures(wpa_s, 1);
1509                 wpa_supplicant_deauthenticate(wpa_s,
1510                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
1511                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1512                                      wpa_s, NULL);
1513                 eloop_register_timeout(60, 0,
1514                                        wpa_supplicant_stop_countermeasures,
1515                                        wpa_s, NULL);
1516                 /* TODO: mark the AP rejected for 60 second. STA is
1517                  * allowed to associate with another AP.. */
1518         } else {
1519 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1520                 if (wpa_s->mic_errors_seen) {
1521                         /*
1522                          * Reduce the effectiveness of Michael MIC error
1523                          * reports as a means for attacking against TKIP if
1524                          * more than one MIC failure is noticed with the same
1525                          * PTK. We delay the transmission of the reports by a
1526                          * random time between 0 and 60 seconds in order to
1527                          * force the attacker wait 60 seconds before getting
1528                          * the information on whether a frame resulted in a MIC
1529                          * failure.
1530                          */
1531                         u8 rval[4];
1532                         int sec;
1533
1534                         if (os_get_random(rval, sizeof(rval)) < 0)
1535                                 sec = os_random() % 60;
1536                         else
1537                                 sec = WPA_GET_BE32(rval) % 60;
1538                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
1539                                 "report %d seconds", sec);
1540                         wpa_s->pending_mic_error_report = 1;
1541                         wpa_s->pending_mic_error_pairwise = pairwise;
1542                         eloop_cancel_timeout(
1543                                 wpa_supplicant_delayed_mic_error_report,
1544                                 wpa_s, NULL);
1545                         eloop_register_timeout(
1546                                 sec, os_random() % 1000000,
1547                                 wpa_supplicant_delayed_mic_error_report,
1548                                 wpa_s, NULL);
1549                 } else {
1550                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1551                 }
1552 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1553                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1554 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1555         }
1556         wpa_s->last_michael_mic_error = t.sec;
1557         wpa_s->mic_errors_seen++;
1558 }
1559
1560
1561 #ifdef CONFIG_TERMINATE_ONLASTIF
1562 static int any_interfaces(struct wpa_supplicant *head)
1563 {
1564         struct wpa_supplicant *wpa_s;
1565
1566         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1567                 if (!wpa_s->interface_removed)
1568                         return 1;
1569         return 0;
1570 }
1571 #endif /* CONFIG_TERMINATE_ONLASTIF */
1572
1573
1574 static void
1575 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1576                                       union wpa_event_data *data)
1577 {
1578         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1579                 return;
1580
1581         switch (data->interface_status.ievent) {
1582         case EVENT_INTERFACE_ADDED:
1583                 if (!wpa_s->interface_removed)
1584                         break;
1585                 wpa_s->interface_removed = 0;
1586                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
1587                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1588                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
1589                                 "driver after interface was added");
1590                 }
1591                 break;
1592         case EVENT_INTERFACE_REMOVED:
1593                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
1594                 wpa_s->interface_removed = 1;
1595                 wpa_supplicant_mark_disassoc(wpa_s);
1596                 l2_packet_deinit(wpa_s->l2);
1597                 wpa_s->l2 = NULL;
1598 #ifdef CONFIG_IBSS_RSN
1599                 ibss_rsn_deinit(wpa_s->ibss_rsn);
1600                 wpa_s->ibss_rsn = NULL;
1601 #endif /* CONFIG_IBSS_RSN */
1602 #ifdef CONFIG_TERMINATE_ONLASTIF
1603                 /* check if last interface */
1604                 if (!any_interfaces(wpa_s->global->ifaces))
1605                         eloop_terminate();
1606 #endif /* CONFIG_TERMINATE_ONLASTIF */
1607                 break;
1608         }
1609 }
1610
1611
1612 #ifdef CONFIG_PEERKEY
1613 static void
1614 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1615                               union wpa_event_data *data)
1616 {
1617         if (data == NULL)
1618                 return;
1619         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1620 }
1621 #endif /* CONFIG_PEERKEY */
1622
1623
1624 #ifdef CONFIG_TDLS
1625 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
1626                                       union wpa_event_data *data)
1627 {
1628         if (data == NULL)
1629                 return;
1630         switch (data->tdls.oper) {
1631         case TDLS_REQUEST_SETUP:
1632                 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
1633                 break;
1634         case TDLS_REQUEST_TEARDOWN:
1635                 /* request from driver to add FTIE */
1636                 wpa_tdls_recv_teardown_notify(wpa_s->wpa, data->tdls.peer,
1637                                               data->tdls.reason_code);
1638                 break;
1639         }
1640 }
1641 #endif /* CONFIG_TDLS */
1642
1643
1644 #ifdef CONFIG_IEEE80211R
1645 static void
1646 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1647                                  union wpa_event_data *data)
1648 {
1649         if (data == NULL)
1650                 return;
1651
1652         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1653                                     data->ft_ies.ies_len,
1654                                     data->ft_ies.ft_action,
1655                                     data->ft_ies.target_ap,
1656                                     data->ft_ies.ric_ies,
1657                                     data->ft_ies.ric_ies_len) < 0) {
1658                 /* TODO: prevent MLME/driver from trying to associate? */
1659         }
1660 }
1661 #endif /* CONFIG_IEEE80211R */
1662
1663
1664 #ifdef CONFIG_IBSS_RSN
1665 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1666                                                 union wpa_event_data *data)
1667 {
1668         struct wpa_ssid *ssid;
1669         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1670                 return;
1671         if (data == NULL)
1672                 return;
1673         ssid = wpa_s->current_ssid;
1674         if (ssid == NULL)
1675                 return;
1676         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
1677                 return;
1678
1679         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1680 }
1681 #endif /* CONFIG_IBSS_RSN */
1682
1683
1684 #ifdef CONFIG_IEEE80211R
1685 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1686                          size_t len)
1687 {
1688         const u8 *sta_addr, *target_ap_addr;
1689         u16 status;
1690
1691         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1692         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1693                 return; /* only SME case supported for now */
1694         if (len < 1 + 2 * ETH_ALEN + 2)
1695                 return;
1696         if (data[0] != 2)
1697                 return; /* Only FT Action Response is supported for now */
1698         sta_addr = data + 1;
1699         target_ap_addr = data + 1 + ETH_ALEN;
1700         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1701         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
1702                 MACSTR " TargetAP " MACSTR " status %u",
1703                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1704
1705         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1706                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1707                         " in FT Action Response", MAC2STR(sta_addr));
1708                 return;
1709         }
1710
1711         if (status) {
1712                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
1713                         "failure (status code %d)", status);
1714                 /* TODO: report error to FT code(?) */
1715                 return;
1716         }
1717
1718         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1719                                     len - (1 + 2 * ETH_ALEN + 2), 1,
1720                                     target_ap_addr, NULL, 0) < 0)
1721                 return;
1722
1723 #ifdef CONFIG_SME
1724         {
1725                 struct wpa_bss *bss;
1726                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1727                 if (bss)
1728                         wpa_s->sme.freq = bss->freq;
1729                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1730                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1731                               WLAN_AUTH_FT);
1732         }
1733 #endif /* CONFIG_SME */
1734 }
1735 #endif /* CONFIG_IEEE80211R */
1736
1737
1738 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
1739                                                struct unprot_deauth *e)
1740 {
1741 #ifdef CONFIG_IEEE80211W
1742         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
1743                    "dropped: " MACSTR " -> " MACSTR
1744                    " (reason code %u)",
1745                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1746         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1747 #endif /* CONFIG_IEEE80211W */
1748 }
1749
1750
1751 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
1752                                                  struct unprot_disassoc *e)
1753 {
1754 #ifdef CONFIG_IEEE80211W
1755         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
1756                    "dropped: " MACSTR " -> " MACSTR
1757                    " (reason code %u)",
1758                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1759         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1760 #endif /* CONFIG_IEEE80211W */
1761 }
1762
1763
1764 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1765                           union wpa_event_data *data)
1766 {
1767         struct wpa_supplicant *wpa_s = ctx;
1768         u16 reason_code = 0;
1769
1770         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
1771             event != EVENT_INTERFACE_ENABLED &&
1772             event != EVENT_INTERFACE_STATUS) {
1773                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore event %d while interface is "
1774                         "disabled", event);
1775                 return;
1776         }
1777
1778         wpa_dbg(wpa_s, MSG_DEBUG, "Event %d received on interface %s",
1779                 event, wpa_s->ifname);
1780
1781         switch (event) {
1782         case EVENT_AUTH:
1783                 sme_event_auth(wpa_s, data);
1784                 break;
1785         case EVENT_ASSOC:
1786                 wpa_supplicant_event_assoc(wpa_s, data);
1787                 break;
1788         case EVENT_DISASSOC:
1789                 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
1790                 if (data) {
1791                         wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1792                                 data->disassoc_info.reason_code);
1793                         if (data->disassoc_info.addr)
1794                                 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
1795                                         MAC2STR(data->disassoc_info.addr));
1796                 }
1797 #ifdef CONFIG_AP
1798                 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
1799                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1800                                                data->disassoc_info.addr);
1801                         break;
1802                 }
1803 #endif /* CONFIG_AP */
1804                 if (data) {
1805                         reason_code = data->disassoc_info.reason_code;
1806                         wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
1807                                     data->disassoc_info.ie,
1808                                     data->disassoc_info.ie_len);
1809 #ifdef CONFIG_P2P
1810                         wpas_p2p_disassoc_notif(
1811                                 wpa_s, data->disassoc_info.addr, reason_code,
1812                                 data->disassoc_info.ie,
1813                                 data->disassoc_info.ie_len);
1814 #endif /* CONFIG_P2P */
1815                 }
1816                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1817                         sme_event_disassoc(wpa_s, data);
1818                 /* fall through */
1819         case EVENT_DEAUTH:
1820                 if (event == EVENT_DEAUTH) {
1821                         wpa_dbg(wpa_s, MSG_DEBUG,
1822                                 "Deauthentication notification");
1823                         if (data) {
1824                                 reason_code = data->deauth_info.reason_code;
1825                                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1826                                         data->deauth_info.reason_code);
1827                                 if (data->deauth_info.addr) {
1828                                         wpa_dbg(wpa_s, MSG_DEBUG, " * address "
1829                                                 MACSTR,
1830                                                 MAC2STR(data->deauth_info.
1831                                                         addr));
1832                                 }
1833                                 wpa_hexdump(MSG_DEBUG,
1834                                             "Deauthentication frame IE(s)",
1835                                             data->deauth_info.ie,
1836                                             data->deauth_info.ie_len);
1837 #ifdef CONFIG_P2P
1838                                 wpas_p2p_deauth_notif(
1839                                         wpa_s, data->deauth_info.addr,
1840                                         reason_code,
1841                                         data->deauth_info.ie,
1842                                         data->deauth_info.ie_len);
1843 #endif /* CONFIG_P2P */
1844                         }
1845                 }
1846 #ifdef CONFIG_AP
1847                 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
1848                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1849                                                data->deauth_info.addr);
1850                         break;
1851                 }
1852 #endif /* CONFIG_AP */
1853                 wpa_supplicant_event_disassoc(wpa_s, reason_code);
1854                 break;
1855         case EVENT_MICHAEL_MIC_FAILURE:
1856                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
1857                 break;
1858 #ifndef CONFIG_NO_SCAN_PROCESSING
1859         case EVENT_SCAN_RESULTS:
1860                 wpa_supplicant_event_scan_results(wpa_s, data);
1861                 break;
1862 #endif /* CONFIG_NO_SCAN_PROCESSING */
1863         case EVENT_ASSOCINFO:
1864                 wpa_supplicant_event_associnfo(wpa_s, data);
1865                 break;
1866         case EVENT_INTERFACE_STATUS:
1867                 wpa_supplicant_event_interface_status(wpa_s, data);
1868                 break;
1869         case EVENT_PMKID_CANDIDATE:
1870                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
1871                 break;
1872 #ifdef CONFIG_PEERKEY
1873         case EVENT_STKSTART:
1874                 wpa_supplicant_event_stkstart(wpa_s, data);
1875                 break;
1876 #endif /* CONFIG_PEERKEY */
1877 #ifdef CONFIG_TDLS
1878         case EVENT_TDLS:
1879                 wpa_supplicant_event_tdls(wpa_s, data);
1880                 break;
1881 #endif /* CONFIG_TDLS */
1882 #ifdef CONFIG_IEEE80211R
1883         case EVENT_FT_RESPONSE:
1884                 wpa_supplicant_event_ft_response(wpa_s, data);
1885                 break;
1886 #endif /* CONFIG_IEEE80211R */
1887 #ifdef CONFIG_IBSS_RSN
1888         case EVENT_IBSS_RSN_START:
1889                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
1890                 break;
1891 #endif /* CONFIG_IBSS_RSN */
1892         case EVENT_ASSOC_REJECT:
1893                 if (data->assoc_reject.bssid)
1894                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
1895                                 "bssid=" MACSTR " status_code=%u",
1896                                 MAC2STR(data->assoc_reject.bssid),
1897                                 data->assoc_reject.status_code);
1898                 else
1899                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
1900                                 "status_code=%u",
1901                                 data->assoc_reject.status_code);
1902                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1903                         sme_event_assoc_reject(wpa_s, data);
1904                 break;
1905         case EVENT_AUTH_TIMED_OUT:
1906                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1907                         sme_event_auth_timed_out(wpa_s, data);
1908                 break;
1909         case EVENT_ASSOC_TIMED_OUT:
1910                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1911                         sme_event_assoc_timed_out(wpa_s, data);
1912                 break;
1913 #ifdef CONFIG_AP
1914         case EVENT_TX_STATUS:
1915                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
1916                         " type=%d stype=%d",
1917                         MAC2STR(data->tx_status.dst),
1918                         data->tx_status.type, data->tx_status.stype);
1919                 if (wpa_s->ap_iface == NULL) {
1920 #ifdef CONFIG_P2P
1921                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1922                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
1923                                 wpas_send_action_tx_status(
1924                                         wpa_s, data->tx_status.dst,
1925                                         data->tx_status.data,
1926                                         data->tx_status.data_len,
1927                                         data->tx_status.ack ?
1928                                         P2P_SEND_ACTION_SUCCESS :
1929                                         P2P_SEND_ACTION_NO_ACK);
1930 #endif /* CONFIG_P2P */
1931                         break;
1932                 }
1933 #ifdef CONFIG_P2P
1934                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
1935                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
1936                 /*
1937                  * Catch TX status events for Action frames we sent via group
1938                  * interface in GO mode.
1939                  */
1940                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1941                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
1942                     os_memcmp(wpa_s->parent->pending_action_dst,
1943                               data->tx_status.dst, ETH_ALEN) == 0) {
1944                         wpas_send_action_tx_status(
1945                                 wpa_s->parent, data->tx_status.dst,
1946                                 data->tx_status.data,
1947                                 data->tx_status.data_len,
1948                                 data->tx_status.ack ?
1949                                 P2P_SEND_ACTION_SUCCESS :
1950                                 P2P_SEND_ACTION_NO_ACK);
1951                         break;
1952                 }
1953 #endif /* CONFIG_P2P */
1954                 switch (data->tx_status.type) {
1955                 case WLAN_FC_TYPE_MGMT:
1956                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
1957                                       data->tx_status.data_len,
1958                                       data->tx_status.stype,
1959                                       data->tx_status.ack);
1960                         break;
1961                 case WLAN_FC_TYPE_DATA:
1962                         ap_tx_status(wpa_s, data->tx_status.dst,
1963                                      data->tx_status.data,
1964                                      data->tx_status.data_len,
1965                                      data->tx_status.ack);
1966                         break;
1967                 }
1968                 break;
1969         case EVENT_RX_FROM_UNKNOWN:
1970                 if (wpa_s->ap_iface == NULL)
1971                         break;
1972                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame,
1973                                        data->rx_from_unknown.len);
1974                 break;
1975         case EVENT_RX_MGMT:
1976                 if (wpa_s->ap_iface == NULL) {
1977 #ifdef CONFIG_P2P
1978                         u16 fc, stype;
1979                         const struct ieee80211_mgmt *mgmt;
1980                         mgmt = (const struct ieee80211_mgmt *)
1981                                 data->rx_mgmt.frame;
1982                         fc = le_to_host16(mgmt->frame_control);
1983                         stype = WLAN_FC_GET_STYPE(fc);
1984                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
1985                             data->rx_mgmt.frame_len > 24) {
1986                                 const u8 *src = mgmt->sa;
1987                                 const u8 *ie = mgmt->u.probe_req.variable;
1988                                 size_t ie_len = data->rx_mgmt.frame_len -
1989                                         (mgmt->u.probe_req.variable -
1990                                          data->rx_mgmt.frame);
1991                                 wpas_p2p_probe_req_rx(wpa_s, src, ie, ie_len);
1992                                 break;
1993                         }
1994 #endif /* CONFIG_P2P */
1995                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
1996                                 "management frame in non-AP mode");
1997                         break;
1998                 }
1999                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2000                 break;
2001 #endif /* CONFIG_AP */
2002         case EVENT_RX_ACTION:
2003                 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2004                         " Category=%u DataLen=%d freq=%d MHz",
2005                         MAC2STR(data->rx_action.sa),
2006                         data->rx_action.category, (int) data->rx_action.len,
2007                         data->rx_action.freq);
2008 #ifdef CONFIG_IEEE80211R
2009                 if (data->rx_action.category == WLAN_ACTION_FT) {
2010                         ft_rx_action(wpa_s, data->rx_action.data,
2011                                      data->rx_action.len);
2012                         break;
2013                 }
2014 #endif /* CONFIG_IEEE80211R */
2015 #ifdef CONFIG_IEEE80211W
2016 #ifdef CONFIG_SME
2017                 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2018                         sme_sa_query_rx(wpa_s, data->rx_action.sa,
2019                                         data->rx_action.data,
2020                                         data->rx_action.len);
2021                         break;
2022                 }
2023 #endif /* CONFIG_SME */
2024 #endif /* CONFIG_IEEE80211W */
2025 #ifdef CONFIG_P2P
2026                 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2027                                    data->rx_action.sa,
2028                                    data->rx_action.bssid,
2029                                    data->rx_action.category,
2030                                    data->rx_action.data,
2031                                    data->rx_action.len, data->rx_action.freq);
2032 #endif /* CONFIG_P2P */
2033                 break;
2034         case EVENT_RX_PROBE_REQ:
2035                 if (data->rx_probe_req.sa == NULL ||
2036                     data->rx_probe_req.ie == NULL)
2037                         break;
2038 #ifdef CONFIG_AP
2039                 if (wpa_s->ap_iface) {
2040                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2041                                              data->rx_probe_req.sa,
2042                                              data->rx_probe_req.ie,
2043                                              data->rx_probe_req.ie_len);
2044                         break;
2045                 }
2046 #endif /* CONFIG_AP */
2047 #ifdef CONFIG_P2P
2048                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2049                                       data->rx_probe_req.ie,
2050                                       data->rx_probe_req.ie_len);
2051 #endif /* CONFIG_P2P */
2052                 break;
2053 #ifdef CONFIG_P2P
2054         case EVENT_REMAIN_ON_CHANNEL:
2055                 wpas_p2p_remain_on_channel_cb(
2056                         wpa_s, data->remain_on_channel.freq,
2057                         data->remain_on_channel.duration);
2058                 break;
2059         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2060                 wpas_p2p_cancel_remain_on_channel_cb(
2061                         wpa_s, data->remain_on_channel.freq);
2062                 break;
2063         case EVENT_P2P_DEV_FOUND: {
2064                 struct p2p_peer_info peer_info;
2065
2066                 os_memset(&peer_info, 0, sizeof(peer_info));
2067                 if (data->p2p_dev_found.dev_addr)
2068                         os_memcpy(peer_info.p2p_device_addr,
2069                                   data->p2p_dev_found.dev_addr, ETH_ALEN);
2070                 if (data->p2p_dev_found.pri_dev_type)
2071                         os_memcpy(peer_info.pri_dev_type,
2072                                   data->p2p_dev_found.pri_dev_type,
2073                                   sizeof(peer_info.pri_dev_type));
2074                 if (data->p2p_dev_found.dev_name)
2075                         os_strlcpy(peer_info.device_name,
2076                                    data->p2p_dev_found.dev_name,
2077                                    sizeof(peer_info.device_name));
2078                 peer_info.config_methods = data->p2p_dev_found.config_methods;
2079                 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2080                 peer_info.group_capab = data->p2p_dev_found.group_capab;
2081
2082                 /*
2083                  * FIX: new_device=1 is not necessarily correct. We should
2084                  * maintain a P2P peer database in wpa_supplicant and update
2085                  * this information based on whether the peer is truly new.
2086                  */
2087                 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2088                 break;
2089                 }
2090         case EVENT_P2P_GO_NEG_REQ_RX:
2091                 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2092                                    data->p2p_go_neg_req_rx.dev_passwd_id);
2093                 break;
2094         case EVENT_P2P_GO_NEG_COMPLETED:
2095                 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2096                 break;
2097         case EVENT_P2P_PROV_DISC_REQUEST:
2098                 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2099                                    data->p2p_prov_disc_req.config_methods,
2100                                    data->p2p_prov_disc_req.dev_addr,
2101                                    data->p2p_prov_disc_req.pri_dev_type,
2102                                    data->p2p_prov_disc_req.dev_name,
2103                                    data->p2p_prov_disc_req.supp_config_methods,
2104                                    data->p2p_prov_disc_req.dev_capab,
2105                                    data->p2p_prov_disc_req.group_capab);
2106                 break;
2107         case EVENT_P2P_PROV_DISC_RESPONSE:
2108                 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2109                                     data->p2p_prov_disc_resp.config_methods);
2110                 break;
2111         case EVENT_P2P_SD_REQUEST:
2112                 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2113                                 data->p2p_sd_req.sa,
2114                                 data->p2p_sd_req.dialog_token,
2115                                 data->p2p_sd_req.update_indic,
2116                                 data->p2p_sd_req.tlvs,
2117                                 data->p2p_sd_req.tlvs_len);
2118                 break;
2119         case EVENT_P2P_SD_RESPONSE:
2120                 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2121                                  data->p2p_sd_resp.update_indic,
2122                                  data->p2p_sd_resp.tlvs,
2123                                  data->p2p_sd_resp.tlvs_len);
2124                 break;
2125 #endif /* CONFIG_P2P */
2126 #ifdef CONFIG_CLIENT_MLME
2127         case EVENT_MLME_RX: {
2128                 struct ieee80211_rx_status rx_status;
2129                 os_memset(&rx_status, 0, sizeof(rx_status));
2130                 rx_status.freq = data->mlme_rx.freq;
2131                 rx_status.channel = data->mlme_rx.channel;
2132                 rx_status.ssi = data->mlme_rx.ssi;
2133                 ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len,
2134                                  &rx_status);
2135                 break;
2136         }
2137 #endif /* CONFIG_CLIENT_MLME */
2138         case EVENT_EAPOL_RX:
2139                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2140                                         data->eapol_rx.data,
2141                                         data->eapol_rx.data_len);
2142                 break;
2143         case EVENT_SIGNAL_CHANGE:
2144                 bgscan_notify_signal_change(
2145                         wpa_s, data->signal_change.above_threshold,
2146                         data->signal_change.current_signal,
2147                         data->signal_change.current_noise,
2148                         data->signal_change.current_txrate);
2149                 break;
2150         case EVENT_INTERFACE_ENABLED:
2151                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2152                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2153 #ifdef CONFIG_AP
2154                         if (!wpa_s->ap_iface) {
2155                                 wpa_supplicant_set_state(wpa_s,
2156                                                          WPA_DISCONNECTED);
2157                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2158                         } else
2159                                 wpa_supplicant_set_state(wpa_s,
2160                                                          WPA_COMPLETED);
2161 #else /* CONFIG_AP */
2162                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2163                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2164 #endif /* CONFIG_AP */
2165                 }
2166                 break;
2167         case EVENT_INTERFACE_DISABLED:
2168                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2169                 wpa_supplicant_mark_disassoc(wpa_s);
2170                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2171                 break;
2172         case EVENT_CHANNEL_LIST_CHANGED:
2173                 if (wpa_s->drv_priv == NULL)
2174                         break; /* Ignore event during drv initialization */
2175 #ifdef CONFIG_P2P
2176                 wpas_p2p_update_channel_list(wpa_s);
2177 #endif /* CONFIG_P2P */
2178                 break;
2179         case EVENT_INTERFACE_UNAVAILABLE:
2180 #ifdef CONFIG_P2P
2181                 wpas_p2p_interface_unavailable(wpa_s);
2182 #endif /* CONFIG_P2P */
2183                 break;
2184         case EVENT_BEST_CHANNEL:
2185                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2186                         "(%d %d %d)",
2187                         data->best_chan.freq_24, data->best_chan.freq_5,
2188                         data->best_chan.freq_overall);
2189                 wpa_s->best_24_freq = data->best_chan.freq_24;
2190                 wpa_s->best_5_freq = data->best_chan.freq_5;
2191                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2192 #ifdef CONFIG_P2P
2193                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2194                                               data->best_chan.freq_5,
2195                                               data->best_chan.freq_overall);
2196 #endif /* CONFIG_P2P */
2197                 break;
2198         case EVENT_UNPROT_DEAUTH:
2199                 wpa_supplicant_event_unprot_deauth(wpa_s,
2200                                                    &data->unprot_deauth);
2201                 break;
2202         case EVENT_UNPROT_DISASSOC:
2203                 wpa_supplicant_event_unprot_disassoc(wpa_s,
2204                                                      &data->unprot_disassoc);
2205                 break;
2206         case EVENT_STATION_LOW_ACK:
2207 #ifdef CONFIG_AP
2208                 if (wpa_s->ap_iface && data)
2209                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2210                                                   data->low_ack.addr);
2211 #endif /* CONFIG_AP */
2212                 break;
2213         case EVENT_IBSS_PEER_LOST:
2214 #ifdef CONFIG_IBSS_RSN
2215                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
2216 #endif /* CONFIG_IBSS_RSN */
2217                 break;
2218         default:
2219                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2220                 break;
2221         }
2222 }