wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eapol_supp/eapol_supp_sm.h"
  13 #include "rsn_supp/wpa.h"
  14 #include "eloop.h"
  15 #include "config.h"
  16 #include "l2_packet/l2_packet.h"
  17 #include "wpa_supplicant_i.h"
  18 #include "driver_i.h"
  19 #include "pcsc_funcs.h"
  20 #include "rsn_supp/preauth.h"
  21 #include "rsn_supp/pmksa_cache.h"
  22 #include "common/wpa_ctrl.h"
  23 #include "eap_peer/eap.h"
  24 #include "ap/hostapd.h"
  25 #include "p2p/p2p.h"
  26 #include "fst/fst.h"
  27 #include "wnm_sta.h"
  28 #include "notify.h"
  29 #include "common/ieee802_11_defs.h"
  30 #include "common/ieee802_11_common.h"
  31 #include "crypto/random.h"
  32 #include "blacklist.h"
  33 #include "wpas_glue.h"
  34 #include "wps_supplicant.h"
  35 #include "ibss_rsn.h"
  36 #include "sme.h"
  37 #include "gas_query.h"
  38 #include "p2p_supplicant.h"
  39 #include "bgscan.h"
  40 #include "autoscan.h"
  41 #include "ap.h"
  42 #include "bss.h"
  43 #include "scan.h"
  44 #include "offchannel.h"
  45 #include "interworking.h"
  46 #include "mesh.h"
  47 #include "mesh_mpm.h"
  48 #include "wmm_ac.h"
  49
  50
  51 #ifndef CONFIG_NO_SCAN_PROCESSING
  52 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  53                                               int new_scan, int own_request);
  54 #endif /* CONFIG_NO_SCAN_PROCESSING */
  55
  56
  57 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  58                               struct wpa_ssid *ssid)
  59 {
  60         struct os_reltime now;
  61
  62         if (ssid == NULL || ssid->disabled_until.sec == 0)
  63                 return 0;
  64
  65         os_get_reltime(&now);
  66         if (ssid->disabled_until.sec > now.sec)
  67                 return ssid->disabled_until.sec - now.sec;
  68
  69         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  70
  71         return 0;
  72 }
  73
  74
  75 #ifndef CONFIG_NO_SCAN_PROCESSING
  76 /**
  77  * wpas_reenabled_network_time - Time until first network is re-enabled
  78  * @wpa_s: Pointer to wpa_supplicant data
  79  * Returns: If all enabled networks are temporarily disabled, returns the time
  80  *      (in sec) until the first network is re-enabled. Otherwise returns 0.
  81  *
  82  * This function is used in case all enabled networks are temporarily disabled,
  83  * in which case it returns the time (in sec) that the first network will be
  84  * re-enabled. The function assumes that at least one network is enabled.
  85  */
  86 static int wpas_reenabled_network_time(struct wpa_supplicant *wpa_s)
  87 {
  88         struct wpa_ssid *ssid;
  89         int disabled_for, res = 0;
  90
  91 #ifdef CONFIG_INTERWORKING
  92         if (wpa_s->conf->auto_interworking && wpa_s->conf->interworking &&
  93             wpa_s->conf->cred)
  94                 return 0;
  95 #endif /* CONFIG_INTERWORKING */
  96
  97         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
  98                 if (ssid->disabled)
  99                         continue;
 100
 101                 disabled_for = wpas_temp_disabled(wpa_s, ssid);
 102                 if (!disabled_for)
 103                         return 0;
 104
 105                 if (!res || disabled_for < res)
 106                         res = disabled_for;
 107         }
 108
 109         return res;
 110 }
 111 #endif /* CONFIG_NO_SCAN_PROCESSING */
 112
 113
 114 void wpas_network_reenabled(void *eloop_ctx, void *timeout_ctx)
 115 {
 116         struct wpa_supplicant *wpa_s = eloop_ctx;
 117
 118         if (wpa_s->disconnected || wpa_s->wpa_state != WPA_SCANNING)
 119                 return;
 120
 121         wpa_dbg(wpa_s, MSG_DEBUG,
 122                 "Try to associate due to network getting re-enabled");
 123         if (wpa_supplicant_fast_associate(wpa_s) != 1) {
 124                 wpa_supplicant_cancel_sched_scan(wpa_s);
 125                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 126         }
 127 }
 128
 129
 130 static struct wpa_bss * wpa_supplicant_get_new_bss(
 131         struct wpa_supplicant *wpa_s, const u8 *bssid)
 132 {
 133         struct wpa_bss *bss = NULL;
 134         struct wpa_ssid *ssid = wpa_s->current_ssid;
 135
 136         if (ssid->ssid_len > 0)
 137                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
 138         if (!bss)
 139                 bss = wpa_bss_get_bssid(wpa_s, bssid);
 140
 141         return bss;
 142 }
 143
 144
 145 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
 146 {
 147         struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 148
 149         if (!bss) {
 150                 wpa_supplicant_update_scan_results(wpa_s);
 151
 152                 /* Get the BSS from the new scan results */
 153                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 154         }
 155
 156         if (bss)
 157                 wpa_s->current_bss = bss;
 158 }
 159
 160
 161 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
 162 {
 163         struct wpa_ssid *ssid, *old_ssid;
 164         u8 drv_ssid[SSID_MAX_LEN];
 165         size_t drv_ssid_len;
 166         int res;
 167
 168         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
 169                 wpa_supplicant_update_current_bss(wpa_s);
 170
 171                 if (wpa_s->current_ssid->ssid_len == 0)
 172                         return 0; /* current profile still in use */
 173                 res = wpa_drv_get_ssid(wpa_s, drv_ssid);
 174                 if (res < 0) {
 175                         wpa_msg(wpa_s, MSG_INFO,
 176                                 "Failed to read SSID from driver");
 177                         return 0; /* try to use current profile */
 178                 }
 179                 drv_ssid_len = res;
 180
 181                 if (drv_ssid_len == wpa_s->current_ssid->ssid_len &&
 182                     os_memcmp(drv_ssid, wpa_s->current_ssid->ssid,
 183                               drv_ssid_len) == 0)
 184                         return 0; /* current profile still in use */
 185
 186                 wpa_msg(wpa_s, MSG_DEBUG,
 187                         "Driver-initiated BSS selection changed the SSID to %s",
 188                         wpa_ssid_txt(drv_ssid, drv_ssid_len));
 189                 /* continue selecting a new network profile */
 190         }
 191
 192         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
 193                 "information");
 194         ssid = wpa_supplicant_get_ssid(wpa_s);
 195         if (ssid == NULL) {
 196                 wpa_msg(wpa_s, MSG_INFO,
 197                         "No network configuration found for the current AP");
 198                 return -1;
 199         }
 200
 201         if (wpas_network_disabled(wpa_s, ssid)) {
 202                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 203                 return -1;
 204         }
 205
 206         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 207             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 208                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 209                 return -1;
 210         }
 211
 212         res = wpas_temp_disabled(wpa_s, ssid);
 213         if (res > 0) {
 214                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 215                         "disabled for %d second(s)", res);
 216                 return -1;
 217         }
 218
 219         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 220                 "current AP");
 221         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 222                 u8 wpa_ie[80];
 223                 size_t wpa_ie_len = sizeof(wpa_ie);
 224                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 225                                               wpa_ie, &wpa_ie_len) < 0)
 226                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 227         } else {
 228                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 229         }
 230
 231         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 232                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 233         old_ssid = wpa_s->current_ssid;
 234         wpa_s->current_ssid = ssid;
 235
 236         wpa_supplicant_update_current_bss(wpa_s);
 237
 238         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 239         wpa_supplicant_initiate_eapol(wpa_s);
 240         if (old_ssid != wpa_s->current_ssid)
 241                 wpas_notify_network_changed(wpa_s);
 242
 243         return 0;
 244 }
 245
 246
 247 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 248 {
 249         struct wpa_supplicant *wpa_s = eloop_ctx;
 250
 251         if (wpa_s->countermeasures) {
 252                 wpa_s->countermeasures = 0;
 253                 wpa_drv_set_countermeasures(wpa_s, 0);
 254                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 255
 256                 /*
 257                  * It is possible that the device is sched scanning, which means
 258                  * that a connection attempt will be done only when we receive
 259                  * scan results. However, in this case, it would be preferable
 260                  * to scan and connect immediately, so cancel the sched_scan and
 261                  * issue a regular scan flow.
 262                  */
 263                 wpa_supplicant_cancel_sched_scan(wpa_s);
 264                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 265         }
 266 }
 267
 268
 269 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 270 {
 271         int bssid_changed;
 272
 273         wnm_bss_keep_alive_deinit(wpa_s);
 274
 275 #ifdef CONFIG_IBSS_RSN
 276         ibss_rsn_deinit(wpa_s->ibss_rsn);
 277         wpa_s->ibss_rsn = NULL;
 278 #endif /* CONFIG_IBSS_RSN */
 279
 280 #ifdef CONFIG_AP
 281         wpa_supplicant_ap_deinit(wpa_s);
 282 #endif /* CONFIG_AP */
 283
 284         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 285                 return;
 286
 287         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 288         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 289         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 290         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 291         sme_clear_on_disassoc(wpa_s);
 292         wpa_s->current_bss = NULL;
 293         wpa_s->assoc_freq = 0;
 294
 295         if (bssid_changed)
 296                 wpas_notify_bssid_changed(wpa_s);
 297
 298         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 299         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 300         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 301                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 302         wpa_s->ap_ies_from_associnfo = 0;
 303         wpa_s->current_ssid = NULL;
 304         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 305         wpa_s->key_mgmt = 0;
 306
 307         wpas_rrm_reset(wpa_s);
 308         wpa_s->wnmsleep_used = 0;
 309 }
 310
 311
 312 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 313 {
 314         struct wpa_ie_data ie;
 315         int pmksa_set = -1;
 316         size_t i;
 317
 318         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 319             ie.pmkid == NULL)
 320                 return;
 321
 322         for (i = 0; i < ie.num_pmkid; i++) {
 323                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 324                                                     ie.pmkid + i * PMKID_LEN,
 325                                                     NULL, NULL, 0);
 326                 if (pmksa_set == 0) {
 327                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
 328                         break;
 329                 }
 330         }
 331
 332         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 333                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 334 }
 335
 336
 337 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 338                                                  union wpa_event_data *data)
 339 {
 340         if (data == NULL) {
 341                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 342                         "event");
 343                 return;
 344         }
 345         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 346                 " index=%d preauth=%d",
 347                 MAC2STR(data->pmkid_candidate.bssid),
 348                 data->pmkid_candidate.index,
 349                 data->pmkid_candidate.preauth);
 350
 351         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 352                             data->pmkid_candidate.index,
 353                             data->pmkid_candidate.preauth);
 354 }
 355
 356
 357 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 358 {
 359         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 360             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 361                 return 0;
 362
 363 #ifdef IEEE8021X_EAPOL
 364         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 365             wpa_s->current_ssid &&
 366             !(wpa_s->current_ssid->eapol_flags &
 367               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 368                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 369                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 370                  * plaintext or static WEP keys). */
 371                 return 0;
 372         }
 373 #endif /* IEEE8021X_EAPOL */
 374
 375         return 1;
 376 }
 377
 378
 379 /**
 380  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 381  * @wpa_s: pointer to wpa_supplicant data
 382  * @ssid: Configuration data for the network
 383  * Returns: 0 on success, -1 on failure
 384  *
 385  * This function is called when starting authentication with a network that is
 386  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 387  */
 388 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 389                               struct wpa_ssid *ssid)
 390 {
 391 #ifdef IEEE8021X_EAPOL
 392 #ifdef PCSC_FUNCS
 393         int aka = 0, sim = 0;
 394
 395         if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
 396             wpa_s->scard != NULL || wpa_s->conf->external_sim)
 397                 return 0;
 398
 399         if (ssid == NULL || ssid->eap.eap_methods == NULL) {
 400                 sim = 1;
 401                 aka = 1;
 402         } else {
 403                 struct eap_method_type *eap = ssid->eap.eap_methods;
 404                 while (eap->vendor != EAP_VENDOR_IETF ||
 405                        eap->method != EAP_TYPE_NONE) {
 406                         if (eap->vendor == EAP_VENDOR_IETF) {
 407                                 if (eap->method == EAP_TYPE_SIM)
 408                                         sim = 1;
 409                                 else if (eap->method == EAP_TYPE_AKA ||
 410                                          eap->method == EAP_TYPE_AKA_PRIME)
 411                                         aka = 1;
 412                         }
 413                         eap++;
 414                 }
 415         }
 416
 417         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 418                 sim = 0;
 419         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 420             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 421             NULL)
 422                 aka = 0;
 423
 424         if (!sim && !aka) {
 425                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 426                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 427                         "enabled");
 428                 return 0;
 429         }
 430
 431         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 432                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 433
 434         wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
 435         if (wpa_s->scard == NULL) {
 436                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 437                         "(pcsc-lite)");
 438                 return -1;
 439         }
 440         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 441         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 442 #endif /* PCSC_FUNCS */
 443 #endif /* IEEE8021X_EAPOL */
 444
 445         return 0;
 446 }
 447
 448
 449 #ifndef CONFIG_NO_SCAN_PROCESSING
 450
 451 static int has_wep_key(struct wpa_ssid *ssid)
 452 {
 453         int i;
 454
 455         for (i = 0; i < NUM_WEP_KEYS; i++) {
 456                 if (ssid->wep_key_len[i])
 457                         return 1;
 458         }
 459
 460         return 0;
 461 }
 462
 463
 464 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 465                                         struct wpa_ssid *ssid)
 466 {
 467         int privacy = 0;
 468
 469         if (ssid->mixed_cell)
 470                 return 1;
 471
 472 #ifdef CONFIG_WPS
 473         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 474                 return 1;
 475 #endif /* CONFIG_WPS */
 476
 477         if (has_wep_key(ssid))
 478                 privacy = 1;
 479
 480 #ifdef IEEE8021X_EAPOL
 481         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 482             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 483                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 484                 privacy = 1;
 485 #endif /* IEEE8021X_EAPOL */
 486
 487         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 488                 privacy = 1;
 489
 490         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 491                 privacy = 1;
 492
 493         if (bss->caps & IEEE80211_CAP_PRIVACY)
 494                 return privacy;
 495         return !privacy;
 496 }
 497
 498
 499 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 500                                          struct wpa_ssid *ssid,
 501                                          struct wpa_bss *bss)
 502 {
 503         struct wpa_ie_data ie;
 504         int proto_match = 0;
 505         const u8 *rsn_ie, *wpa_ie;
 506         int ret;
 507         int wep_ok;
 508
 509         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 510         if (ret >= 0)
 511                 return ret;
 512
 513         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 514         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 515                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 516                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 517                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 518
 519         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 520         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 521                 proto_match++;
 522
 523                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 524                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 525                                 "failed");
 526                         break;
 527                 }
 528
 529                 if (wep_ok &&
 530                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 531                 {
 532                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 533                                 "in RSN IE");
 534                         return 1;
 535                 }
 536
 537                 if (!(ie.proto & ssid->proto)) {
 538                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 539                                 "mismatch");
 540                         break;
 541                 }
 542
 543                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 544                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 545                                 "cipher mismatch");
 546                         break;
 547                 }
 548
 549                 if (!(ie.group_cipher & ssid->group_cipher)) {
 550                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 551                                 "cipher mismatch");
 552                         break;
 553                 }
 554
 555                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 556                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 557                                 "mismatch");
 558                         break;
 559                 }
 560
 561 #ifdef CONFIG_IEEE80211W
 562                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 563                     wpas_get_ssid_pmf(wpa_s, ssid) ==
 564                     MGMT_FRAME_PROTECTION_REQUIRED) {
 565                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 566                                 "frame protection");
 567                         break;
 568                 }
 569 #endif /* CONFIG_IEEE80211W */
 570                 if ((ie.capabilities & WPA_CAPABILITY_MFPR) &&
 571                     wpas_get_ssid_pmf(wpa_s, ssid) ==
 572                     NO_MGMT_FRAME_PROTECTION) {
 573                         wpa_dbg(wpa_s, MSG_DEBUG,
 574                                 "   skip RSN IE - no mgmt frame protection enabled but AP requires it");
 575                         break;
 576                 }
 577
 578                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 579                 return 1;
 580         }
 581
 582         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 583         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 584                 proto_match++;
 585
 586                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 587                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 588                                 "failed");
 589                         break;
 590                 }
 591
 592                 if (wep_ok &&
 593                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 594                 {
 595                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 596                                 "in WPA IE");
 597                         return 1;
 598                 }
 599
 600                 if (!(ie.proto & ssid->proto)) {
 601                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 602                                 "mismatch");
 603                         break;
 604                 }
 605
 606                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 607                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 608                                 "cipher mismatch");
 609                         break;
 610                 }
 611
 612                 if (!(ie.group_cipher & ssid->group_cipher)) {
 613                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 614                                 "cipher mismatch");
 615                         break;
 616                 }
 617
 618                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 619                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 620                                 "mismatch");
 621                         break;
 622                 }
 623
 624                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 625                 return 1;
 626         }
 627
 628         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 629             !rsn_ie) {
 630                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 631                 return 1;
 632         }
 633
 634         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 635             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 636                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 637                 return 0;
 638         }
 639
 640         if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
 641             wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
 642                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
 643                 return 1;
 644         }
 645
 646         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 647                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 648                 return 1;
 649         }
 650
 651         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 652                 "WPA/WPA2");
 653
 654         return 0;
 655 }
 656
 657
 658 static int freq_allowed(int *freqs, int freq)
 659 {
 660         int i;
 661
 662         if (freqs == NULL)
 663                 return 1;
 664
 665         for (i = 0; freqs[i]; i++)
 666                 if (freqs[i] == freq)
 667                         return 1;
 668         return 0;
 669 }
 670
 671
 672 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 673 {
 674         const struct hostapd_hw_modes *mode = NULL, *modes;
 675         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 676         const u8 *rate_ie;
 677         int i, j, k;
 678
 679         if (bss->freq == 0)
 680                 return 1; /* Cannot do matching without knowing band */
 681
 682         modes = wpa_s->hw.modes;
 683         if (modes == NULL) {
 684                 /*
 685                  * The driver does not provide any additional information
 686                  * about the utilized hardware, so allow the connection attempt
 687                  * to continue.
 688                  */
 689                 return 1;
 690         }
 691
 692         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 693                 for (j = 0; j < modes[i].num_channels; j++) {
 694                         int freq = modes[i].channels[j].freq;
 695                         if (freq == bss->freq) {
 696                                 if (mode &&
 697                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 698                                         break; /* do not allow 802.11b replace
 699                                                 * 802.11g */
 700                                 mode = &modes[i];
 701                                 break;
 702                         }
 703                 }
 704         }
 705
 706         if (mode == NULL)
 707                 return 0;
 708
 709         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 710                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 711                 if (rate_ie == NULL)
 712                         continue;
 713
 714                 for (j = 2; j < rate_ie[1] + 2; j++) {
 715                         int flagged = !!(rate_ie[j] & 0x80);
 716                         int r = (rate_ie[j] & 0x7f) * 5;
 717
 718                         /*
 719                          * IEEE Std 802.11n-2009 7.3.2.2:
 720                          * The new BSS Membership selector value is encoded
 721                          * like a legacy basic rate, but it is not a rate and
 722                          * only indicates if the BSS members are required to
 723                          * support the mandatory features of Clause 20 [HT PHY]
 724                          * in order to join the BSS.
 725                          */
 726                         if (flagged && ((rate_ie[j] & 0x7f) ==
 727                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 728                                 if (!ht_supported(mode)) {
 729                                         wpa_dbg(wpa_s, MSG_DEBUG,
 730                                                 "   hardware does not support "
 731                                                 "HT PHY");
 732                                         return 0;
 733                                 }
 734                                 continue;
 735                         }
 736
 737                         /* There's also a VHT selector for 802.11ac */
 738                         if (flagged && ((rate_ie[j] & 0x7f) ==
 739                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 740                                 if (!vht_supported(mode)) {
 741                                         wpa_dbg(wpa_s, MSG_DEBUG,
 742                                                 "   hardware does not support "
 743                                                 "VHT PHY");
 744                                         return 0;
 745                                 }
 746                                 continue;
 747                         }
 748
 749                         if (!flagged)
 750                                 continue;
 751
 752                         /* check for legacy basic rates */
 753                         for (k = 0; k < mode->num_rates; k++) {
 754                                 if (mode->rates[k] == r)
 755                                         break;
 756                         }
 757                         if (k == mode->num_rates) {
 758                                 /*
 759                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 760                                  * order to join a BSS all required rates
 761                                  * have to be supported by the hardware.
 762                                  */
 763                                 wpa_dbg(wpa_s, MSG_DEBUG,
 764                                         "   hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)",
 765                                         r / 10, r % 10,
 766                                         bss->freq, mode->mode, mode->num_rates);
 767                                 return 0;
 768                         }
 769                 }
 770         }
 771
 772         return 1;
 773 }
 774
 775
 776 /*
 777  * Test whether BSS is in an ESS.
 778  * This is done differently in DMG (60 GHz) and non-DMG bands
 779  */
 780 static int bss_is_ess(struct wpa_bss *bss)
 781 {
 782         if (bss_is_dmg(bss)) {
 783                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 784                         IEEE80211_CAP_DMG_AP;
 785         }
 786
 787         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 788                 IEEE80211_CAP_ESS);
 789 }
 790
 791
 792 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
 793 {
 794         size_t i;
 795
 796         for (i = 0; i < ETH_ALEN; i++) {
 797                 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
 798                         return 0;
 799         }
 800         return 1;
 801 }
 802
 803
 804 static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
 805 {
 806         size_t i;
 807
 808         for (i = 0; i < num; i++) {
 809                 const u8 *a = list + i * ETH_ALEN * 2;
 810                 const u8 *m = a + ETH_ALEN;
 811
 812                 if (match_mac_mask(a, addr, m))
 813                         return 1;
 814         }
 815         return 0;
 816 }
 817
 818
 819 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 820                                             int i, struct wpa_bss *bss,
 821                                             struct wpa_ssid *group,
 822                                             int only_first_ssid)
 823 {
 824         u8 wpa_ie_len, rsn_ie_len;
 825         int wpa;
 826         struct wpa_blacklist *e;
 827         const u8 *ie;
 828         struct wpa_ssid *ssid;
 829         int osen;
 830
 831         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 832         wpa_ie_len = ie ? ie[1] : 0;
 833
 834         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 835         rsn_ie_len = ie ? ie[1] : 0;
 836
 837         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 838         osen = ie != NULL;
 839
 840         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 841                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d freq=%d %s%s%s",
 842                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 843                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level, bss->freq,
 844                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 845                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 846                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 847                 " p2p" : "",
 848                 osen ? " osen=1" : "");
 849
 850         e = wpa_blacklist_get(wpa_s, bss->bssid);
 851         if (e) {
 852                 int limit = 1;
 853                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 854                         /*
 855                          * When only a single network is enabled, we can
 856                          * trigger blacklisting on the first failure. This
 857                          * should not be done with multiple enabled networks to
 858                          * avoid getting forced to move into a worse ESS on
 859                          * single error if there are no other BSSes of the
 860                          * current ESS.
 861                          */
 862                         limit = 0;
 863                 }
 864                 if (e->count > limit) {
 865                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 866                                 "(count=%d limit=%d)", e->count, limit);
 867                         return NULL;
 868                 }
 869         }
 870
 871         if (bss->ssid_len == 0) {
 872                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 873                 return NULL;
 874         }
 875
 876         if (disallowed_bssid(wpa_s, bss->bssid)) {
 877                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 878                 return NULL;
 879         }
 880
 881         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 882                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 883                 return NULL;
 884         }
 885
 886         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 887
 888         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 889                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 890                 int res;
 891
 892                 if (wpas_network_disabled(wpa_s, ssid)) {
 893                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 894                         continue;
 895                 }
 896
 897                 res = wpas_temp_disabled(wpa_s, ssid);
 898                 if (res > 0) {
 899                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 900                                 "temporarily for %d second(s)", res);
 901                         continue;
 902                 }
 903
 904 #ifdef CONFIG_WPS
 905                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 906                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 907                                 "(WPS)");
 908                         continue;
 909                 }
 910
 911                 if (wpa && ssid->ssid_len == 0 &&
 912                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 913                         check_ssid = 0;
 914
 915                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 916                         /* Only allow wildcard SSID match if an AP
 917                          * advertises active WPS operation that matches
 918                          * with our mode. */
 919                         check_ssid = 1;
 920                         if (ssid->ssid_len == 0 &&
 921                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 922                                 check_ssid = 0;
 923                 }
 924 #endif /* CONFIG_WPS */
 925
 926                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 927                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 928                         check_ssid = 0;
 929
 930                 if (check_ssid &&
 931                     (bss->ssid_len != ssid->ssid_len ||
 932                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 933                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 934                         continue;
 935                 }
 936
 937                 if (ssid->bssid_set &&
 938                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 939                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 940                         continue;
 941                 }
 942
 943                 /* check blacklist */
 944                 if (ssid->num_bssid_blacklist &&
 945                     addr_in_list(bss->bssid, ssid->bssid_blacklist,
 946                                  ssid->num_bssid_blacklist)) {
 947                         wpa_dbg(wpa_s, MSG_DEBUG,
 948                                 "   skip - BSSID blacklisted");
 949                         continue;
 950                 }
 951
 952                 /* if there is a whitelist, only accept those APs */
 953                 if (ssid->num_bssid_whitelist &&
 954                     !addr_in_list(bss->bssid, ssid->bssid_whitelist,
 955                                   ssid->num_bssid_whitelist)) {
 956                         wpa_dbg(wpa_s, MSG_DEBUG,
 957                                 "   skip - BSSID not in whitelist");
 958                         continue;
 959                 }
 960
 961                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 962                         continue;
 963
 964                 if (!osen && !wpa &&
 965                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 966                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 967                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 968                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 969                                 "not allowed");
 970                         continue;
 971                 }
 972
 973                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 974                     has_wep_key(ssid)) {
 975                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 976                         continue;
 977                 }
 978
 979                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
 980                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
 981                                 "not allowed");
 982                         continue;
 983                 }
 984
 985                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 986                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 987                                 "mismatch");
 988                         continue;
 989                 }
 990
 991                 if (!bss_is_ess(bss)) {
 992                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 993                         continue;
 994                 }
 995
 996                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 997                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 998                                 "allowed");
 999                         continue;
1000                 }
1001
1002                 if (!rate_match(wpa_s, bss)) {
1003                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
1004                                 "not match");
1005                         continue;
1006                 }
1007
1008 #ifdef CONFIG_P2P
1009                 if (ssid->p2p_group &&
1010                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
1011                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
1012                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
1013                         continue;
1014                 }
1015
1016                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
1017                         struct wpabuf *p2p_ie;
1018                         u8 dev_addr[ETH_ALEN];
1019
1020                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
1021                         if (ie == NULL) {
1022                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
1023                                 continue;
1024                         }
1025                         p2p_ie = wpa_bss_get_vendor_ie_multi(
1026                                 bss, P2P_IE_VENDOR_TYPE);
1027                         if (p2p_ie == NULL) {
1028                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
1029                                 continue;
1030                         }
1031
1032                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
1033                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
1034                                          ETH_ALEN) != 0) {
1035                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
1036                                 wpabuf_free(p2p_ie);
1037                                 continue;
1038                         }
1039                         wpabuf_free(p2p_ie);
1040                 }
1041
1042                 /*
1043                  * TODO: skip the AP if its P2P IE has Group Formation
1044                  * bit set in the P2P Group Capability Bitmap and we
1045                  * are not in Group Formation with that device.
1046                  */
1047 #endif /* CONFIG_P2P */
1048
1049                 if (os_reltime_before(&bss->last_update, &wpa_s->scan_min_time))
1050                 {
1051                         struct os_reltime diff;
1052
1053                         os_reltime_sub(&wpa_s->scan_min_time,
1054                                        &bss->last_update, &diff);
1055                         wpa_dbg(wpa_s, MSG_DEBUG,
1056                                 "   skip - scan result not recent enough (%u.%06u seconds too old)",
1057                                 (unsigned int) diff.sec,
1058                                 (unsigned int) diff.usec);
1059                         continue;
1060                 }
1061
1062                 /* Matching configuration found */
1063                 return ssid;
1064         }
1065
1066         /* No matching configuration found */
1067         return NULL;
1068 }
1069
1070
1071 static struct wpa_bss *
1072 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
1073                           struct wpa_ssid *group,
1074                           struct wpa_ssid **selected_ssid,
1075                           int only_first_ssid)
1076 {
1077         unsigned int i;
1078
1079         if (only_first_ssid)
1080                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
1081                         group->id);
1082         else
1083                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
1084                         group->priority);
1085
1086         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
1087                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
1088                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
1089                                                     only_first_ssid);
1090                 if (!*selected_ssid)
1091                         continue;
1092                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
1093                         " ssid='%s'",
1094                         MAC2STR(bss->bssid),
1095                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
1096                 return bss;
1097         }
1098
1099         return NULL;
1100 }
1101
1102
1103 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1104                                              struct wpa_ssid **selected_ssid)
1105 {
1106         struct wpa_bss *selected = NULL;
1107         int prio;
1108         struct wpa_ssid *next_ssid = NULL;
1109         struct wpa_ssid *ssid;
1110
1111         if (wpa_s->last_scan_res == NULL ||
1112             wpa_s->last_scan_res_used == 0)
1113                 return NULL; /* no scan results from last update */
1114
1115         if (wpa_s->next_ssid) {
1116                 /* check that next_ssid is still valid */
1117                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1118                         if (ssid == wpa_s->next_ssid)
1119                                 break;
1120                 }
1121                 next_ssid = ssid;
1122                 wpa_s->next_ssid = NULL;
1123         }
1124
1125         while (selected == NULL) {
1126                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1127                         if (next_ssid && next_ssid->priority ==
1128                             wpa_s->conf->pssid[prio]->priority) {
1129                                 selected = wpa_supplicant_select_bss(
1130                                         wpa_s, next_ssid, selected_ssid, 1);
1131                                 if (selected)
1132                                         break;
1133                         }
1134                         selected = wpa_supplicant_select_bss(
1135                                 wpa_s, wpa_s->conf->pssid[prio],
1136                                 selected_ssid, 0);
1137                         if (selected)
1138                                 break;
1139                 }
1140
1141                 if (selected == NULL && wpa_s->blacklist &&
1142                     !wpa_s->countermeasures) {
1143                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1144                                 "blacklist and try again");
1145                         wpa_blacklist_clear(wpa_s);
1146                         wpa_s->blacklist_cleared++;
1147                 } else if (selected == NULL)
1148                         break;
1149         }
1150
1151         ssid = *selected_ssid;
1152         if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set &&
1153             !ssid->passphrase && !ssid->ext_psk) {
1154                 const char *field_name, *txt = NULL;
1155
1156                 wpa_dbg(wpa_s, MSG_DEBUG,
1157                         "PSK/passphrase not yet available for the selected network");
1158
1159                 wpas_notify_network_request(wpa_s, ssid,
1160                                             WPA_CTRL_REQ_PSK_PASSPHRASE, NULL);
1161
1162                 field_name = wpa_supplicant_ctrl_req_to_string(
1163                         WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt);
1164                 if (field_name == NULL)
1165                         return NULL;
1166
1167                 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
1168
1169                 selected = NULL;
1170         }
1171
1172         return selected;
1173 }
1174
1175
1176 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1177                                         int timeout_sec, int timeout_usec)
1178 {
1179         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1180                 /*
1181                  * No networks are enabled; short-circuit request so
1182                  * we don't wait timeout seconds before transitioning
1183                  * to INACTIVE state.
1184                  */
1185                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1186                         "since there are no enabled networks");
1187                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1188                 return;
1189         }
1190
1191         wpa_s->scan_for_connection = 1;
1192         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1193 }
1194
1195
1196 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1197                            struct wpa_bss *selected,
1198                            struct wpa_ssid *ssid)
1199 {
1200         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1201                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1202                         "PBC session overlap");
1203                 wpas_notify_wps_event_pbc_overlap(wpa_s);
1204 #ifdef CONFIG_P2P
1205                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1206                     wpa_s->p2p_in_provisioning) {
1207                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1208                                                wpa_s, NULL);
1209                         return -1;
1210                 }
1211 #endif /* CONFIG_P2P */
1212
1213 #ifdef CONFIG_WPS
1214                 wpas_wps_pbc_overlap(wpa_s);
1215                 wpas_wps_cancel(wpa_s);
1216 #endif /* CONFIG_WPS */
1217                 return -1;
1218         }
1219
1220         wpa_msg(wpa_s, MSG_DEBUG,
1221                 "Considering connect request: reassociate: %d  selected: "
1222                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1223                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1224                 wpa_s->reassociate, MAC2STR(selected->bssid),
1225                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1226                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1227                 ssid, wpa_s->current_ssid);
1228
1229         /*
1230          * Do not trigger new association unless the BSSID has changed or if
1231          * reassociation is requested. If we are in process of associating with
1232          * the selected BSSID, do not trigger new attempt.
1233          */
1234         if (wpa_s->reassociate ||
1235             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1236              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1237                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1238               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1239                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1240                0) ||
1241               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1242                ssid != wpa_s->current_ssid)))) {
1243                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1244                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1245                         return 0;
1246                 }
1247                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1248                         MAC2STR(selected->bssid));
1249                 wpa_supplicant_associate(wpa_s, selected, ssid);
1250         } else {
1251                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1252                         "connect with the selected AP");
1253         }
1254
1255         return 0;
1256 }
1257
1258
1259 static struct wpa_ssid *
1260 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1261 {
1262         int prio;
1263         struct wpa_ssid *ssid;
1264
1265         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1266                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1267                 {
1268                         if (wpas_network_disabled(wpa_s, ssid))
1269                                 continue;
1270                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1271                             ssid->mode == IEEE80211_MODE_AP ||
1272                             ssid->mode == IEEE80211_MODE_MESH)
1273                                 return ssid;
1274                 }
1275         }
1276         return NULL;
1277 }
1278
1279
1280 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1281  * on BSS added and BSS changed events */
1282 static void wpa_supplicant_rsn_preauth_scan_results(
1283         struct wpa_supplicant *wpa_s)
1284 {
1285         struct wpa_bss *bss;
1286
1287         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1288                 return;
1289
1290         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1291                 const u8 *ssid, *rsn;
1292
1293                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1294                 if (ssid == NULL)
1295                         continue;
1296
1297                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1298                 if (rsn == NULL)
1299                         continue;
1300
1301                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1302         }
1303
1304 }
1305
1306
1307 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1308                                        struct wpa_bss *selected,
1309                                        struct wpa_ssid *ssid)
1310 {
1311         struct wpa_bss *current_bss = NULL;
1312 #ifndef CONFIG_NO_ROAMING
1313         int min_diff;
1314 #endif /* CONFIG_NO_ROAMING */
1315
1316         if (wpa_s->reassociate)
1317                 return 1; /* explicit request to reassociate */
1318         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1319                 return 1; /* we are not associated; continue */
1320         if (wpa_s->current_ssid == NULL)
1321                 return 1; /* unknown current SSID */
1322         if (wpa_s->current_ssid != ssid)
1323                 return 1; /* different network block */
1324
1325         if (wpas_driver_bss_selection(wpa_s))
1326                 return 0; /* Driver-based roaming */
1327
1328         if (wpa_s->current_ssid->ssid)
1329                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1330                                           wpa_s->current_ssid->ssid,
1331                                           wpa_s->current_ssid->ssid_len);
1332         if (!current_bss)
1333                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1334
1335         if (!current_bss)
1336                 return 1; /* current BSS not seen in scan results */
1337
1338         if (current_bss == selected)
1339                 return 0;
1340
1341         if (selected->last_update_idx > current_bss->last_update_idx)
1342                 return 1; /* current BSS not seen in the last scan */
1343
1344 #ifndef CONFIG_NO_ROAMING
1345         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1346         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
1347                 " level=%d snr=%d est_throughput=%u",
1348                 MAC2STR(current_bss->bssid), current_bss->level,
1349                 current_bss->snr, current_bss->est_throughput);
1350         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
1351                 " level=%d snr=%d est_throughput=%u",
1352                 MAC2STR(selected->bssid), selected->level,
1353                 selected->snr, selected->est_throughput);
1354
1355         if (wpa_s->current_ssid->bssid_set &&
1356             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1357             0) {
1358                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1359                         "has preferred BSSID");
1360                 return 1;
1361         }
1362
1363         if (selected->est_throughput > current_bss->est_throughput + 5000) {
1364                 wpa_dbg(wpa_s, MSG_DEBUG,
1365                         "Allow reassociation - selected BSS has better estimated throughput");
1366                 return 1;
1367         }
1368
1369         if (current_bss->level < 0 && current_bss->level > selected->level) {
1370                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1371                         "signal level");
1372                 return 0;
1373         }
1374
1375         min_diff = 2;
1376         if (current_bss->level < 0) {
1377                 if (current_bss->level < -85)
1378                         min_diff = 1;
1379                 else if (current_bss->level < -80)
1380                         min_diff = 2;
1381                 else if (current_bss->level < -75)
1382                         min_diff = 3;
1383                 else if (current_bss->level < -70)
1384                         min_diff = 4;
1385                 else
1386                         min_diff = 5;
1387         }
1388         if (abs(current_bss->level - selected->level) < min_diff) {
1389                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1390                         "in signal level");
1391                 return 0;
1392         }
1393
1394         return 1;
1395 #else /* CONFIG_NO_ROAMING */
1396         return 0;
1397 #endif /* CONFIG_NO_ROAMING */
1398 }
1399
1400
1401 /* Return != 0 if no scan results could be fetched or if scan results should not
1402  * be shared with other virtual interfaces. */
1403 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1404                                               union wpa_event_data *data,
1405                                               int own_request)
1406 {
1407         struct wpa_scan_results *scan_res = NULL;
1408         int ret = 0;
1409         int ap = 0;
1410 #ifndef CONFIG_NO_RANDOM_POOL
1411         size_t i, num;
1412 #endif /* CONFIG_NO_RANDOM_POOL */
1413
1414 #ifdef CONFIG_AP
1415         if (wpa_s->ap_iface)
1416                 ap = 1;
1417 #endif /* CONFIG_AP */
1418
1419         wpa_supplicant_notify_scanning(wpa_s, 0);
1420
1421         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1422                                                    data ? &data->scan_info :
1423                                                    NULL, 1);
1424         if (scan_res == NULL) {
1425                 if (wpa_s->conf->ap_scan == 2 || ap ||
1426                     wpa_s->scan_res_handler == scan_only_handler)
1427                         return -1;
1428                 if (!own_request)
1429                         return -1;
1430                 if (data && data->scan_info.external_scan)
1431                         return -1;
1432                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1433                         "scanning again");
1434                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1435                 ret = -1;
1436                 goto scan_work_done;
1437         }
1438
1439 #ifndef CONFIG_NO_RANDOM_POOL
1440         num = scan_res->num;
1441         if (num > 10)
1442                 num = 10;
1443         for (i = 0; i < num; i++) {
1444                 u8 buf[5];
1445                 struct wpa_scan_res *res = scan_res->res[i];
1446                 buf[0] = res->bssid[5];
1447                 buf[1] = res->qual & 0xff;
1448                 buf[2] = res->noise & 0xff;
1449                 buf[3] = res->level & 0xff;
1450                 buf[4] = res->tsf & 0xff;
1451                 random_add_randomness(buf, sizeof(buf));
1452         }
1453 #endif /* CONFIG_NO_RANDOM_POOL */
1454
1455         if (own_request && wpa_s->scan_res_handler &&
1456             !(data && data->scan_info.external_scan)) {
1457                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1458                                          struct wpa_scan_results *scan_res);
1459
1460                 scan_res_handler = wpa_s->scan_res_handler;
1461                 wpa_s->scan_res_handler = NULL;
1462                 scan_res_handler(wpa_s, scan_res);
1463                 ret = -2;
1464                 goto scan_work_done;
1465         }
1466
1467         if (ap) {
1468                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1469 #ifdef CONFIG_AP
1470                 if (wpa_s->ap_iface->scan_cb)
1471                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1472 #endif /* CONFIG_AP */
1473                 goto scan_work_done;
1474         }
1475
1476         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1477                 wpa_s->own_scan_running,
1478                 data ? data->scan_info.external_scan : 0);
1479         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1480             wpa_s->manual_scan_use_id && wpa_s->own_scan_running &&
1481             own_request && !(data && data->scan_info.external_scan)) {
1482                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1483                              wpa_s->manual_scan_id);
1484                 wpa_s->manual_scan_use_id = 0;
1485         } else {
1486                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1487         }
1488         wpas_notify_scan_results(wpa_s);
1489
1490         wpas_notify_scan_done(wpa_s, 1);
1491
1492         if (data && data->scan_info.external_scan) {
1493                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1494                 wpa_scan_results_free(scan_res);
1495                 return 0;
1496         }
1497
1498         if (wnm_scan_process(wpa_s, 1) > 0)
1499                 goto scan_work_done;
1500
1501         if (sme_proc_obss_scan(wpa_s) > 0)
1502                 goto scan_work_done;
1503
1504         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1505                 goto scan_work_done;
1506
1507         if (autoscan_notify_scan(wpa_s, scan_res))
1508                 goto scan_work_done;
1509
1510         if (wpa_s->disconnected) {
1511                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1512                 goto scan_work_done;
1513         }
1514
1515         if (!wpas_driver_bss_selection(wpa_s) &&
1516             bgscan_notify_scan(wpa_s, scan_res) == 1)
1517                 goto scan_work_done;
1518
1519         wpas_wps_update_ap_info(wpa_s, scan_res);
1520
1521         if (wpa_s->wpa_state >= WPA_AUTHENTICATING &&
1522             wpa_s->wpa_state < WPA_COMPLETED)
1523                 goto scan_work_done;
1524
1525         wpa_scan_results_free(scan_res);
1526
1527         if (own_request && wpa_s->scan_work) {
1528                 struct wpa_radio_work *work = wpa_s->scan_work;
1529                 wpa_s->scan_work = NULL;
1530                 radio_work_done(work);
1531         }
1532
1533         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1534
1535 scan_work_done:
1536         wpa_scan_results_free(scan_res);
1537         if (own_request && wpa_s->scan_work) {
1538                 struct wpa_radio_work *work = wpa_s->scan_work;
1539                 wpa_s->scan_work = NULL;
1540                 radio_work_done(work);
1541         }
1542         return ret;
1543 }
1544
1545
1546 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1547                                               int new_scan, int own_request)
1548 {
1549         struct wpa_bss *selected;
1550         struct wpa_ssid *ssid = NULL;
1551         int time_to_reenable = wpas_reenabled_network_time(wpa_s);
1552
1553         if (time_to_reenable > 0) {
1554                 wpa_dbg(wpa_s, MSG_DEBUG,
1555                         "Postpone network selection by %d seconds since all networks are disabled",
1556                         time_to_reenable);
1557                 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
1558                 eloop_register_timeout(time_to_reenable, 0,
1559                                        wpas_network_reenabled, wpa_s, NULL);
1560                 return 0;
1561         }
1562
1563         if (wpa_s->p2p_mgmt)
1564                 return 0; /* no normal connection on p2p_mgmt interface */
1565
1566         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1567
1568         if (selected) {
1569                 int skip;
1570                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1571                 if (skip) {
1572                         if (new_scan)
1573                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1574                         return 0;
1575                 }
1576
1577                 if (ssid != wpa_s->current_ssid &&
1578                     wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1579                         wpa_s->own_disconnect_req = 1;
1580                         wpa_supplicant_deauthenticate(
1581                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1582                 }
1583
1584                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1585                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1586                         return -1;
1587                 }
1588                 if (new_scan)
1589                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1590                 /*
1591                  * Do not notify other virtual radios of scan results since we do not
1592                  * want them to start other associations at the same time.
1593                  */
1594                 return 1;
1595         } else {
1596 #ifdef CONFIG_MESH
1597                 if (wpa_s->ifmsh) {
1598                         wpa_msg(wpa_s, MSG_INFO,
1599                                 "Avoiding join because we already joined a mesh group");
1600                         return 0;
1601                 }
1602 #endif /* CONFIG_MESH */
1603                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1604                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1605                 if (ssid) {
1606                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1607                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1608                         if (new_scan)
1609                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1610                 } else if (own_request) {
1611                         /*
1612                          * No SSID found. If SCAN results are as a result of
1613                          * own scan request and not due to a scan request on
1614                          * another shared interface, try another scan.
1615                          */
1616                         int timeout_sec = wpa_s->scan_interval;
1617                         int timeout_usec = 0;
1618 #ifdef CONFIG_P2P
1619                         int res;
1620
1621                         res = wpas_p2p_scan_no_go_seen(wpa_s);
1622                         if (res == 2)
1623                                 return 2;
1624                         if (res == 1)
1625                                 return 0;
1626
1627                         if (wpa_s->p2p_in_provisioning ||
1628                             wpa_s->show_group_started ||
1629                             wpa_s->p2p_in_invitation) {
1630                                 /*
1631                                  * Use shorter wait during P2P Provisioning
1632                                  * state and during P2P join-a-group operation
1633                                  * to speed up group formation.
1634                                  */
1635                                 timeout_sec = 0;
1636                                 timeout_usec = 250000;
1637                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1638                                                             timeout_usec);
1639                                 return 0;
1640                         }
1641 #endif /* CONFIG_P2P */
1642 #ifdef CONFIG_INTERWORKING
1643                         if (wpa_s->conf->auto_interworking &&
1644                             wpa_s->conf->interworking &&
1645                             wpa_s->conf->cred) {
1646                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1647                                         "start ANQP fetch since no matching "
1648                                         "networks found");
1649                                 wpa_s->network_select = 1;
1650                                 wpa_s->auto_network_select = 1;
1651                                 interworking_start_fetch_anqp(wpa_s);
1652                                 return 1;
1653                         }
1654 #endif /* CONFIG_INTERWORKING */
1655 #ifdef CONFIG_WPS
1656                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1657                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1658                                 timeout_sec = 0;
1659                                 timeout_usec = 500000;
1660                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1661                                                             timeout_usec);
1662                                 return 0;
1663                         }
1664 #endif /* CONFIG_WPS */
1665                         if (wpa_supplicant_req_sched_scan(wpa_s))
1666                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1667                                                             timeout_usec);
1668
1669                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1670                                      WPA_EVENT_NETWORK_NOT_FOUND);
1671                 }
1672         }
1673         return 0;
1674 }
1675
1676
1677 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1678                                              union wpa_event_data *data)
1679 {
1680         struct wpa_supplicant *ifs;
1681         int res;
1682
1683         res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1684         if (res == 2) {
1685                 /*
1686                  * Interface may have been removed, so must not dereference
1687                  * wpa_s after this.
1688                  */
1689                 return 1;
1690         }
1691         if (res != 0) {
1692                 /*
1693                  * If no scan results could be fetched, then no need to
1694                  * notify those interfaces that did not actually request
1695                  * this scan. Similarly, if scan results started a new operation on this
1696                  * interface, do not notify other interfaces to avoid concurrent
1697                  * operations during a connection attempt.
1698                  */
1699                 return 0;
1700         }
1701
1702         /*
1703          * Check other interfaces to see if they share the same radio. If
1704          * so, they get updated with this same scan info.
1705          */
1706         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1707                          radio_list) {
1708                 if (ifs != wpa_s) {
1709                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1710                                    "sibling", ifs->ifname);
1711                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1712                 }
1713         }
1714
1715         return 0;
1716 }
1717
1718 #endif /* CONFIG_NO_SCAN_PROCESSING */
1719
1720
1721 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1722 {
1723 #ifdef CONFIG_NO_SCAN_PROCESSING
1724         return -1;
1725 #else /* CONFIG_NO_SCAN_PROCESSING */
1726         struct os_reltime now;
1727
1728         if (wpa_s->last_scan_res_used == 0)
1729                 return -1;
1730
1731         os_get_reltime(&now);
1732         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1733                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1734                 return -1;
1735         }
1736
1737         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1738 #endif /* CONFIG_NO_SCAN_PROCESSING */
1739 }
1740
1741 #ifdef CONFIG_WNM
1742
1743 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1744 {
1745         struct wpa_supplicant *wpa_s = eloop_ctx;
1746
1747         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1748                 return;
1749
1750         if (!wpa_s->no_keep_alive) {
1751                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1752                            MAC2STR(wpa_s->bssid));
1753                 /* TODO: could skip this if normal data traffic has been sent */
1754                 /* TODO: Consider using some more appropriate data frame for
1755                  * this */
1756                 if (wpa_s->l2)
1757                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1758                                        (u8 *) "", 0);
1759         }
1760
1761 #ifdef CONFIG_SME
1762         if (wpa_s->sme.bss_max_idle_period) {
1763                 unsigned int msec;
1764                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1765                 if (msec > 100)
1766                         msec -= 100;
1767                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1768                                        wnm_bss_keep_alive, wpa_s, NULL);
1769         }
1770 #endif /* CONFIG_SME */
1771 }
1772
1773
1774 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1775                                    const u8 *ies, size_t ies_len)
1776 {
1777         struct ieee802_11_elems elems;
1778
1779         if (ies == NULL)
1780                 return;
1781
1782         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1783                 return;
1784
1785 #ifdef CONFIG_SME
1786         if (elems.bss_max_idle_period) {
1787                 unsigned int msec;
1788                 wpa_s->sme.bss_max_idle_period =
1789                         WPA_GET_LE16(elems.bss_max_idle_period);
1790                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1791                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1792                            (elems.bss_max_idle_period[2] & 0x01) ?
1793                            " (protected keep-live required)" : "");
1794                 if (wpa_s->sme.bss_max_idle_period == 0)
1795                         wpa_s->sme.bss_max_idle_period = 1;
1796                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1797                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1798                          /* msec times 1000 */
1799                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1800                         if (msec > 100)
1801                                 msec -= 100;
1802                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1803                                                wnm_bss_keep_alive, wpa_s,
1804                                                NULL);
1805                 }
1806         }
1807 #endif /* CONFIG_SME */
1808 }
1809
1810 #endif /* CONFIG_WNM */
1811
1812
1813 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1814 {
1815 #ifdef CONFIG_WNM
1816         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1817 #endif /* CONFIG_WNM */
1818 }
1819
1820
1821 #ifdef CONFIG_INTERWORKING
1822
1823 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1824                             size_t len)
1825 {
1826         int res;
1827
1828         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1829         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1830         if (res) {
1831                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1832         }
1833
1834         return res;
1835 }
1836
1837
1838 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1839                                             const u8 *ies, size_t ies_len)
1840 {
1841         struct ieee802_11_elems elems;
1842
1843         if (ies == NULL)
1844                 return;
1845
1846         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1847                 return;
1848
1849         if (elems.qos_map_set) {
1850                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1851                                  elems.qos_map_set_len);
1852         }
1853 }
1854
1855 #endif /* CONFIG_INTERWORKING */
1856
1857
1858 #ifdef CONFIG_FST
1859 static int wpas_fst_update_mbie(struct wpa_supplicant *wpa_s,
1860                                 const u8 *ie, size_t ie_len)
1861 {
1862         struct mb_ies_info mb_ies;
1863
1864         if (!ie || !ie_len || !wpa_s->fst)
1865             return -ENOENT;
1866
1867         os_memset(&mb_ies, 0, sizeof(mb_ies));
1868
1869         while (ie_len >= 2 && mb_ies.nof_ies < MAX_NOF_MB_IES_SUPPORTED) {
1870                 size_t len;
1871
1872                 len = 2 + ie[1];
1873                 if (len > ie_len) {
1874                         wpa_hexdump(MSG_DEBUG, "FST: Truncated IE found",
1875                                     ie, ie_len);
1876                         break;
1877                 }
1878
1879                 if (ie[0] == WLAN_EID_MULTI_BAND) {
1880                         wpa_printf(MSG_DEBUG, "MB IE of %u bytes found",
1881                                    (unsigned int) len);
1882                         mb_ies.ies[mb_ies.nof_ies].ie = ie + 2;
1883                         mb_ies.ies[mb_ies.nof_ies].ie_len = len - 2;
1884                         mb_ies.nof_ies++;
1885                 }
1886
1887                 ie_len -= len;
1888                 ie += len;
1889         }
1890
1891         if (mb_ies.nof_ies > 0) {
1892                 wpabuf_free(wpa_s->received_mb_ies);
1893                 wpa_s->received_mb_ies = mb_ies_by_info(&mb_ies);
1894                 return 0;
1895         }
1896
1897         return -ENOENT;
1898 }
1899 #endif /* CONFIG_FST */
1900
1901
1902 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1903                                           union wpa_event_data *data)
1904 {
1905         int l, len, found = 0, wpa_found, rsn_found;
1906         const u8 *p;
1907 #ifdef CONFIG_IEEE80211R
1908         u8 bssid[ETH_ALEN];
1909 #endif /* CONFIG_IEEE80211R */
1910
1911         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1912         if (data->assoc_info.req_ies)
1913                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1914                             data->assoc_info.req_ies_len);
1915         if (data->assoc_info.resp_ies) {
1916                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1917                             data->assoc_info.resp_ies_len);
1918 #ifdef CONFIG_TDLS
1919                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1920                                         data->assoc_info.resp_ies_len);
1921 #endif /* CONFIG_TDLS */
1922 #ifdef CONFIG_WNM
1923                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1924                                        data->assoc_info.resp_ies_len);
1925 #endif /* CONFIG_WNM */
1926 #ifdef CONFIG_INTERWORKING
1927                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1928                                                 data->assoc_info.resp_ies_len);
1929 #endif /* CONFIG_INTERWORKING */
1930         }
1931         if (data->assoc_info.beacon_ies)
1932                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1933                             data->assoc_info.beacon_ies,
1934                             data->assoc_info.beacon_ies_len);
1935         if (data->assoc_info.freq)
1936                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1937                         data->assoc_info.freq);
1938
1939         p = data->assoc_info.req_ies;
1940         l = data->assoc_info.req_ies_len;
1941
1942         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1943         while (p && l >= 2) {
1944                 len = p[1] + 2;
1945                 if (len > l) {
1946                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1947                                     p, l);
1948                         break;
1949                 }
1950                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1951                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1952                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1953                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1954                                 break;
1955                         found = 1;
1956                         wpa_find_assoc_pmkid(wpa_s);
1957                         break;
1958                 }
1959                 l -= len;
1960                 p += len;
1961         }
1962         if (!found && data->assoc_info.req_ies)
1963                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1964
1965 #ifdef CONFIG_IEEE80211R
1966 #ifdef CONFIG_SME
1967         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1968                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1969                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1970                                                  data->assoc_info.resp_ies,
1971                                                  data->assoc_info.resp_ies_len,
1972                                                  bssid) < 0) {
1973                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1974                                 "Reassociation Response failed");
1975                         wpa_supplicant_deauthenticate(
1976                                 wpa_s, WLAN_REASON_INVALID_IE);
1977                         return -1;
1978                 }
1979         }
1980
1981         p = data->assoc_info.resp_ies;
1982         l = data->assoc_info.resp_ies_len;
1983
1984 #ifdef CONFIG_WPS_STRICT
1985         if (p && wpa_s->current_ssid &&
1986             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1987                 struct wpabuf *wps;
1988                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1989                 if (wps == NULL) {
1990                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1991                                 "include WPS IE in (Re)Association Response");
1992                         return -1;
1993                 }
1994
1995                 if (wps_validate_assoc_resp(wps) < 0) {
1996                         wpabuf_free(wps);
1997                         wpa_supplicant_deauthenticate(
1998                                 wpa_s, WLAN_REASON_INVALID_IE);
1999                         return -1;
2000                 }
2001                 wpabuf_free(wps);
2002         }
2003 #endif /* CONFIG_WPS_STRICT */
2004
2005         /* Go through the IEs and make a copy of the MDIE, if present. */
2006         while (p && l >= 2) {
2007                 len = p[1] + 2;
2008                 if (len > l) {
2009                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
2010                                     p, l);
2011                         break;
2012                 }
2013                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
2014                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
2015                         wpa_s->sme.ft_used = 1;
2016                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
2017                                   MOBILITY_DOMAIN_ID_LEN);
2018                         break;
2019                 }
2020                 l -= len;
2021                 p += len;
2022         }
2023 #endif /* CONFIG_SME */
2024
2025         /* Process FT when SME is in the driver */
2026         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
2027             wpa_ft_is_completed(wpa_s->wpa)) {
2028                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
2029                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
2030                                                  data->assoc_info.resp_ies,
2031                                                  data->assoc_info.resp_ies_len,
2032                                                  bssid) < 0) {
2033                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
2034                                 "Reassociation Response failed");
2035                         wpa_supplicant_deauthenticate(
2036                                 wpa_s, WLAN_REASON_INVALID_IE);
2037                         return -1;
2038                 }
2039                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
2040         }
2041
2042         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
2043                              data->assoc_info.resp_ies_len);
2044 #endif /* CONFIG_IEEE80211R */
2045
2046         /* WPA/RSN IE from Beacon/ProbeResp */
2047         p = data->assoc_info.beacon_ies;
2048         l = data->assoc_info.beacon_ies_len;
2049
2050         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
2051          */
2052         wpa_found = rsn_found = 0;
2053         while (p && l >= 2) {
2054                 len = p[1] + 2;
2055                 if (len > l) {
2056                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
2057                                     p, l);
2058                         break;
2059                 }
2060                 if (!wpa_found &&
2061                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
2062                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
2063                         wpa_found = 1;
2064                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
2065                 }
2066
2067                 if (!rsn_found &&
2068                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
2069                         rsn_found = 1;
2070                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
2071                 }
2072
2073                 l -= len;
2074                 p += len;
2075         }
2076
2077         if (!wpa_found && data->assoc_info.beacon_ies)
2078                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
2079         if (!rsn_found && data->assoc_info.beacon_ies)
2080                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
2081         if (wpa_found || rsn_found)
2082                 wpa_s->ap_ies_from_associnfo = 1;
2083
2084         if (wpa_s->assoc_freq && data->assoc_info.freq &&
2085             wpa_s->assoc_freq != data->assoc_info.freq) {
2086                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
2087                            "%u to %u MHz",
2088                            wpa_s->assoc_freq, data->assoc_info.freq);
2089                 wpa_supplicant_update_scan_results(wpa_s);
2090         }
2091
2092         wpa_s->assoc_freq = data->assoc_info.freq;
2093
2094         return 0;
2095 }
2096
2097
2098 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
2099 {
2100         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
2101
2102         if (!wpa_s->current_bss || !wpa_s->current_ssid)
2103                 return -1;
2104
2105         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
2106                 return 0;
2107
2108         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
2109                                         WPA_IE_VENDOR_TYPE);
2110         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
2111
2112         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
2113                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
2114             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
2115                                  bss_rsn ? 2 + bss_rsn[1] : 0))
2116                 return -1;
2117
2118         return 0;
2119 }
2120
2121
2122 static void wpas_fst_update_mb_assoc(struct wpa_supplicant *wpa_s,
2123                                      union wpa_event_data *data)
2124 {
2125 #ifdef CONFIG_FST
2126         struct assoc_info *ai = data ? &data->assoc_info : NULL;
2127         struct wpa_bss *bss = wpa_s->current_bss;
2128         const u8 *ieprb, *iebcn;
2129
2130         wpabuf_free(wpa_s->received_mb_ies);
2131         wpa_s->received_mb_ies = NULL;
2132
2133         if (ai &&
2134             !wpas_fst_update_mbie(wpa_s, ai->resp_ies, ai->resp_ies_len)) {
2135                 wpa_printf(MSG_DEBUG,
2136                            "FST: MB IEs updated from Association Response frame");
2137                 return;
2138         }
2139
2140         if (ai &&
2141             !wpas_fst_update_mbie(wpa_s, ai->beacon_ies, ai->beacon_ies_len)) {
2142                 wpa_printf(MSG_DEBUG,
2143                            "FST: MB IEs updated from association event Beacon IEs");
2144                 return;
2145         }
2146
2147         if (!bss)
2148                 return;
2149
2150         ieprb = (const u8 *) (bss + 1);
2151         iebcn = ieprb + bss->ie_len;
2152
2153         if (!wpas_fst_update_mbie(wpa_s, ieprb, bss->ie_len))
2154                 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss IE");
2155         else if (!wpas_fst_update_mbie(wpa_s, iebcn, bss->beacon_ie_len))
2156                 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss beacon IE");
2157 #endif /* CONFIG_FST */
2158 }
2159
2160
2161 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
2162                                        union wpa_event_data *data)
2163 {
2164         u8 bssid[ETH_ALEN];
2165         int ft_completed;
2166         int new_bss = 0;
2167
2168 #ifdef CONFIG_AP
2169         if (wpa_s->ap_iface) {
2170                 if (!data)
2171                         return;
2172                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
2173                                     data->assoc_info.addr,
2174                                     data->assoc_info.req_ies,
2175                                     data->assoc_info.req_ies_len,
2176                                     data->assoc_info.reassoc);
2177                 return;
2178         }
2179 #endif /* CONFIG_AP */
2180
2181         eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
2182
2183         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
2184         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
2185                 return;
2186
2187         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
2188                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
2189                 wpa_supplicant_deauthenticate(
2190                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2191                 return;
2192         }
2193
2194         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
2195         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
2196                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
2197                         MACSTR, MAC2STR(bssid));
2198                 new_bss = 1;
2199                 random_add_randomness(bssid, ETH_ALEN);
2200                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
2201                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2202                 wpas_notify_bssid_changed(wpa_s);
2203
2204                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
2205                         wpa_clear_keys(wpa_s, bssid);
2206                 }
2207                 if (wpa_supplicant_select_config(wpa_s) < 0) {
2208                         wpa_supplicant_deauthenticate(
2209                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2210                         return;
2211                 }
2212         }
2213
2214         if (wpa_s->conf->ap_scan == 1 &&
2215             wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
2216                 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0 && new_bss)
2217                         wpa_msg(wpa_s, MSG_WARNING,
2218                                 "WPA/RSN IEs not updated");
2219         }
2220
2221         wpas_fst_update_mb_assoc(wpa_s, data);
2222
2223 #ifdef CONFIG_SME
2224         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
2225         wpa_s->sme.prev_bssid_set = 1;
2226         wpa_s->sme.last_unprot_disconnect.sec = 0;
2227 #endif /* CONFIG_SME */
2228
2229         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
2230         if (wpa_s->current_ssid) {
2231                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
2232                  * initialized before association, but for other modes,
2233                  * initialize PC/SC here, if the current configuration needs
2234                  * smartcard or SIM/USIM. */
2235                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
2236         }
2237         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
2238         if (wpa_s->l2)
2239                 l2_packet_notify_auth_start(wpa_s->l2);
2240
2241         /*
2242          * Set portEnabled first to FALSE in order to get EAP state machine out
2243          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
2244          * state machine may transit to AUTHENTICATING state based on obsolete
2245          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
2246          * AUTHENTICATED without ever giving chance to EAP state machine to
2247          * reset the state.
2248          */
2249         if (!ft_completed) {
2250                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2251                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2252         }
2253         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
2254                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2255         /* 802.1X::portControl = Auto */
2256         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2257         wpa_s->eapol_received = 0;
2258         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2259             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2260             (wpa_s->current_ssid &&
2261              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2262                 if (wpa_s->current_ssid &&
2263                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2264                     (wpa_s->drv_flags &
2265                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2266                         /*
2267                          * Set the key after having received joined-IBSS event
2268                          * from the driver.
2269                          */
2270                         wpa_supplicant_set_wpa_none_key(wpa_s,
2271                                                         wpa_s->current_ssid);
2272                 }
2273                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2274                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2275         } else if (!ft_completed) {
2276                 /* Timeout for receiving the first EAPOL packet */
2277                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2278         }
2279         wpa_supplicant_cancel_scan(wpa_s);
2280
2281         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2282             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2283                 /*
2284                  * We are done; the driver will take care of RSN 4-way
2285                  * handshake.
2286                  */
2287                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2288                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2289                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2290                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2291         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2292                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2293                 /*
2294                  * The driver will take care of RSN 4-way handshake, so we need
2295                  * to allow EAPOL supplicant to complete its work without
2296                  * waiting for WPA supplicant.
2297                  */
2298                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2299         } else if (ft_completed) {
2300                 /*
2301                  * FT protocol completed - make sure EAPOL state machine ends
2302                  * up in authenticated.
2303                  */
2304                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2305                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2306                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2307                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2308         }
2309
2310         wpa_s->last_eapol_matches_bssid = 0;
2311
2312         if (wpa_s->pending_eapol_rx) {
2313                 struct os_reltime now, age;
2314                 os_get_reltime(&now);
2315                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2316                 if (age.sec == 0 && age.usec < 100000 &&
2317                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2318                     0) {
2319                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2320                                 "frame that was received just before "
2321                                 "association notification");
2322                         wpa_supplicant_rx_eapol(
2323                                 wpa_s, wpa_s->pending_eapol_rx_src,
2324                                 wpabuf_head(wpa_s->pending_eapol_rx),
2325                                 wpabuf_len(wpa_s->pending_eapol_rx));
2326                 }
2327                 wpabuf_free(wpa_s->pending_eapol_rx);
2328                 wpa_s->pending_eapol_rx = NULL;
2329         }
2330
2331         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2332              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2333             wpa_s->current_ssid &&
2334             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2335                 /* Set static WEP keys again */
2336                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2337         }
2338
2339 #ifdef CONFIG_IBSS_RSN
2340         if (wpa_s->current_ssid &&
2341             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2342             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2343             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2344             wpa_s->ibss_rsn == NULL) {
2345                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2346                 if (!wpa_s->ibss_rsn) {
2347                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2348                         wpa_supplicant_deauthenticate(
2349                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2350                         return;
2351                 }
2352
2353                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2354         }
2355 #endif /* CONFIG_IBSS_RSN */
2356
2357         wpas_wps_notify_assoc(wpa_s, bssid);
2358
2359         if (data) {
2360                 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2361                                     data->assoc_info.resp_ies_len,
2362                                     &data->assoc_info.wmm_params);
2363
2364                 if (wpa_s->reassoc_same_bss)
2365                         wmm_ac_restore_tspecs(wpa_s);
2366         }
2367 }
2368
2369
2370 static int disconnect_reason_recoverable(u16 reason_code)
2371 {
2372         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2373                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2374                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2375 }
2376
2377
2378 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2379                                           u16 reason_code,
2380                                           int locally_generated)
2381 {
2382         const u8 *bssid;
2383
2384         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2385                 /*
2386                  * At least Host AP driver and a Prism3 card seemed to be
2387                  * generating streams of disconnected events when configuring
2388                  * IBSS for WPA-None. Ignore them for now.
2389                  */
2390                 return;
2391         }
2392
2393         bssid = wpa_s->bssid;
2394         if (is_zero_ether_addr(bssid))
2395                 bssid = wpa_s->pending_bssid;
2396
2397         if (!is_zero_ether_addr(bssid) ||
2398             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2399                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2400                         " reason=%d%s",
2401                         MAC2STR(bssid), reason_code,
2402                         locally_generated ? " locally_generated=1" : "");
2403         }
2404 }
2405
2406
2407 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2408                                  int locally_generated)
2409 {
2410         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2411             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2412                 return 0; /* Not in 4-way handshake with PSK */
2413
2414         /*
2415          * It looks like connection was lost while trying to go through PSK
2416          * 4-way handshake. Filter out known disconnection cases that are caused
2417          * by something else than PSK mismatch to avoid confusing reports.
2418          */
2419
2420         if (locally_generated) {
2421                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2422                         return 0;
2423         }
2424
2425         return 1;
2426 }
2427
2428
2429 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2430                                                  u16 reason_code,
2431                                                  int locally_generated)
2432 {
2433         const u8 *bssid;
2434         int authenticating;
2435         u8 prev_pending_bssid[ETH_ALEN];
2436         struct wpa_bss *fast_reconnect = NULL;
2437         struct wpa_ssid *fast_reconnect_ssid = NULL;
2438         struct wpa_ssid *last_ssid;
2439
2440         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2441         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2442
2443         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2444                 /*
2445                  * At least Host AP driver and a Prism3 card seemed to be
2446                  * generating streams of disconnected events when configuring
2447                  * IBSS for WPA-None. Ignore them for now.
2448                  */
2449                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2450                         "IBSS/WPA-None mode");
2451                 return;
2452         }
2453
2454         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2455                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2456                         "pre-shared key may be incorrect");
2457                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2458                         return; /* P2P group removed */
2459                 wpas_auth_failed(wpa_s, "WRONG_KEY");
2460         }
2461         if (!wpa_s->disconnected &&
2462             (!wpa_s->auto_reconnect_disabled ||
2463              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2464              wpas_wps_searching(wpa_s) ||
2465              wpas_wps_reenable_networks_pending(wpa_s))) {
2466                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2467                         "reconnect (wps=%d/%d wpa_state=%d)",
2468                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2469                         wpas_wps_searching(wpa_s),
2470                         wpa_s->wpa_state);
2471                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2472                     wpa_s->current_ssid &&
2473                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2474                     !locally_generated &&
2475                     disconnect_reason_recoverable(reason_code)) {
2476                         /*
2477                          * It looks like the AP has dropped association with
2478                          * us, but could allow us to get back in. Try to
2479                          * reconnect to the same BSS without full scan to save
2480                          * time for some common cases.
2481                          */
2482                         fast_reconnect = wpa_s->current_bss;
2483                         fast_reconnect_ssid = wpa_s->current_ssid;
2484                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2485                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2486                 else
2487                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2488                                 "immediate scan");
2489         } else {
2490                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2491                         "try to re-connect");
2492                 wpa_s->reassociate = 0;
2493                 wpa_s->disconnected = 1;
2494                 if (!wpa_s->pno)
2495                         wpa_supplicant_cancel_sched_scan(wpa_s);
2496         }
2497         bssid = wpa_s->bssid;
2498         if (is_zero_ether_addr(bssid))
2499                 bssid = wpa_s->pending_bssid;
2500         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2501                 wpas_connection_failed(wpa_s, bssid);
2502         wpa_sm_notify_disassoc(wpa_s->wpa);
2503         if (locally_generated)
2504                 wpa_s->disconnect_reason = -reason_code;
2505         else
2506                 wpa_s->disconnect_reason = reason_code;
2507         wpas_notify_disconnect_reason(wpa_s);
2508         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2509                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2510                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2511         }
2512         last_ssid = wpa_s->current_ssid;
2513         wpa_supplicant_mark_disassoc(wpa_s);
2514
2515         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2516                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2517                 wpa_s->current_ssid = last_ssid;
2518         }
2519
2520         if (fast_reconnect &&
2521             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2522             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2523             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2524                              fast_reconnect->ssid_len) &&
2525             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2526 #ifndef CONFIG_NO_SCAN_PROCESSING
2527                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2528                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2529                                            fast_reconnect_ssid) < 0) {
2530                         /* Recover through full scan */
2531                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2532                 }
2533 #endif /* CONFIG_NO_SCAN_PROCESSING */
2534         } else if (fast_reconnect) {
2535                 /*
2536                  * Could not reconnect to the same BSS due to network being
2537                  * disabled. Use a new scan to match the alternative behavior
2538                  * above, i.e., to continue automatic reconnection attempt in a
2539                  * way that enforces disabled network rules.
2540                  */
2541                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2542         }
2543 }
2544
2545
2546 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2547 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2548 {
2549         struct wpa_supplicant *wpa_s = eloop_ctx;
2550
2551         if (!wpa_s->pending_mic_error_report)
2552                 return;
2553
2554         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2555         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2556         wpa_s->pending_mic_error_report = 0;
2557 }
2558 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2559
2560
2561 static void
2562 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2563                                          union wpa_event_data *data)
2564 {
2565         int pairwise;
2566         struct os_reltime t;
2567
2568         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2569         pairwise = (data && data->michael_mic_failure.unicast);
2570         os_get_reltime(&t);
2571         if ((wpa_s->last_michael_mic_error.sec &&
2572              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2573             wpa_s->pending_mic_error_report) {
2574                 if (wpa_s->pending_mic_error_report) {
2575                         /*
2576                          * Send the pending MIC error report immediately since
2577                          * we are going to start countermeasures and AP better
2578                          * do the same.
2579                          */
2580                         wpa_sm_key_request(wpa_s->wpa, 1,
2581                                            wpa_s->pending_mic_error_pairwise);
2582                 }
2583
2584                 /* Send the new MIC error report immediately since we are going
2585                  * to start countermeasures and AP better do the same.
2586                  */
2587                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2588
2589                 /* initialize countermeasures */
2590                 wpa_s->countermeasures = 1;
2591
2592                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2593
2594                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2595
2596                 /*
2597                  * Need to wait for completion of request frame. We do not get
2598                  * any callback for the message completion, so just wait a
2599                  * short while and hope for the best. */
2600                 os_sleep(0, 10000);
2601
2602                 wpa_drv_set_countermeasures(wpa_s, 1);
2603                 wpa_supplicant_deauthenticate(wpa_s,
2604                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2605                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2606                                      wpa_s, NULL);
2607                 eloop_register_timeout(60, 0,
2608                                        wpa_supplicant_stop_countermeasures,
2609                                        wpa_s, NULL);
2610                 /* TODO: mark the AP rejected for 60 second. STA is
2611                  * allowed to associate with another AP.. */
2612         } else {
2613 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2614                 if (wpa_s->mic_errors_seen) {
2615                         /*
2616                          * Reduce the effectiveness of Michael MIC error
2617                          * reports as a means for attacking against TKIP if
2618                          * more than one MIC failure is noticed with the same
2619                          * PTK. We delay the transmission of the reports by a
2620                          * random time between 0 and 60 seconds in order to
2621                          * force the attacker wait 60 seconds before getting
2622                          * the information on whether a frame resulted in a MIC
2623                          * failure.
2624                          */
2625                         u8 rval[4];
2626                         int sec;
2627
2628                         if (os_get_random(rval, sizeof(rval)) < 0)
2629                                 sec = os_random() % 60;
2630                         else
2631                                 sec = WPA_GET_BE32(rval) % 60;
2632                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2633                                 "report %d seconds", sec);
2634                         wpa_s->pending_mic_error_report = 1;
2635                         wpa_s->pending_mic_error_pairwise = pairwise;
2636                         eloop_cancel_timeout(
2637                                 wpa_supplicant_delayed_mic_error_report,
2638                                 wpa_s, NULL);
2639                         eloop_register_timeout(
2640                                 sec, os_random() % 1000000,
2641                                 wpa_supplicant_delayed_mic_error_report,
2642                                 wpa_s, NULL);
2643                 } else {
2644                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2645                 }
2646 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2647                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2648 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2649         }
2650         wpa_s->last_michael_mic_error = t;
2651         wpa_s->mic_errors_seen++;
2652 }
2653
2654
2655 #ifdef CONFIG_TERMINATE_ONLASTIF
2656 static int any_interfaces(struct wpa_supplicant *head)
2657 {
2658         struct wpa_supplicant *wpa_s;
2659
2660         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2661                 if (!wpa_s->interface_removed)
2662                         return 1;
2663         return 0;
2664 }
2665 #endif /* CONFIG_TERMINATE_ONLASTIF */
2666
2667
2668 static void
2669 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2670                                       union wpa_event_data *data)
2671 {
2672         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2673                 return;
2674
2675         switch (data->interface_status.ievent) {
2676         case EVENT_INTERFACE_ADDED:
2677                 if (!wpa_s->interface_removed)
2678                         break;
2679                 wpa_s->interface_removed = 0;
2680                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2681                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2682                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2683                                 "driver after interface was added");
2684                 }
2685
2686 #ifdef CONFIG_P2P
2687                 if (!wpa_s->global->p2p &&
2688                     !wpa_s->global->p2p_disabled &&
2689                     !wpa_s->conf->p2p_disabled &&
2690                     (wpa_s->drv_flags &
2691                      WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
2692                     wpas_p2p_add_p2pdev_interface(
2693                             wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) {
2694                         wpa_printf(MSG_INFO,
2695                                    "P2P: Failed to enable P2P Device interface");
2696                         /* Try to continue without. P2P will be disabled. */
2697                 }
2698 #endif /* CONFIG_P2P */
2699
2700                 break;
2701         case EVENT_INTERFACE_REMOVED:
2702                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2703                 wpa_s->interface_removed = 1;
2704                 wpa_supplicant_mark_disassoc(wpa_s);
2705                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2706                 l2_packet_deinit(wpa_s->l2);
2707                 wpa_s->l2 = NULL;
2708
2709 #ifdef CONFIG_P2P
2710                 if (wpa_s->global->p2p &&
2711                     wpa_s->global->p2p_init_wpa_s->parent == wpa_s &&
2712                     (wpa_s->drv_flags &
2713                      WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) {
2714                         wpa_dbg(wpa_s, MSG_DEBUG,
2715                                 "Removing P2P Device interface");
2716                         wpa_supplicant_remove_iface(
2717                                 wpa_s->global, wpa_s->global->p2p_init_wpa_s,
2718                                 0);
2719                         wpa_s->global->p2p_init_wpa_s = NULL;
2720                 }
2721 #endif /* CONFIG_P2P */
2722
2723 #ifdef CONFIG_TERMINATE_ONLASTIF
2724                 /* check if last interface */
2725                 if (!any_interfaces(wpa_s->global->ifaces))
2726                         eloop_terminate();
2727 #endif /* CONFIG_TERMINATE_ONLASTIF */
2728                 break;
2729         }
2730 }
2731
2732
2733 #ifdef CONFIG_PEERKEY
2734 static void
2735 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2736                               union wpa_event_data *data)
2737 {
2738         if (data == NULL)
2739                 return;
2740         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2741 }
2742 #endif /* CONFIG_PEERKEY */
2743
2744
2745 #ifdef CONFIG_TDLS
2746 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2747                                       union wpa_event_data *data)
2748 {
2749         if (data == NULL)
2750                 return;
2751         switch (data->tdls.oper) {
2752         case TDLS_REQUEST_SETUP:
2753                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2754                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2755                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2756                 else
2757                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2758                 break;
2759         case TDLS_REQUEST_TEARDOWN:
2760                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2761                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2762                                                data->tdls.reason_code);
2763                 else
2764                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2765                                           data->tdls.peer);
2766                 break;
2767         case TDLS_REQUEST_DISCOVER:
2768                         wpa_tdls_send_discovery_request(wpa_s->wpa,
2769                                                         data->tdls.peer);
2770                 break;
2771         }
2772 }
2773 #endif /* CONFIG_TDLS */
2774
2775
2776 #ifdef CONFIG_WNM
2777 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2778                                      union wpa_event_data *data)
2779 {
2780         if (data == NULL)
2781                 return;
2782         switch (data->wnm.oper) {
2783         case WNM_OPER_SLEEP:
2784                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2785                            "(action=%d, intval=%d)",
2786                            data->wnm.sleep_action, data->wnm.sleep_intval);
2787                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2788                                              data->wnm.sleep_intval, NULL);
2789                 break;
2790         }
2791 }
2792 #endif /* CONFIG_WNM */
2793
2794
2795 #ifdef CONFIG_IEEE80211R
2796 static void
2797 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2798                                  union wpa_event_data *data)
2799 {
2800         if (data == NULL)
2801                 return;
2802
2803         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2804                                     data->ft_ies.ies_len,
2805                                     data->ft_ies.ft_action,
2806                                     data->ft_ies.target_ap,
2807                                     data->ft_ies.ric_ies,
2808                                     data->ft_ies.ric_ies_len) < 0) {
2809                 /* TODO: prevent MLME/driver from trying to associate? */
2810         }
2811 }
2812 #endif /* CONFIG_IEEE80211R */
2813
2814
2815 #ifdef CONFIG_IBSS_RSN
2816 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2817                                                 union wpa_event_data *data)
2818 {
2819         struct wpa_ssid *ssid;
2820         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2821                 return;
2822         if (data == NULL)
2823                 return;
2824         ssid = wpa_s->current_ssid;
2825         if (ssid == NULL)
2826                 return;
2827         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2828                 return;
2829
2830         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2831 }
2832
2833
2834 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2835                                            union wpa_event_data *data)
2836 {
2837         struct wpa_ssid *ssid = wpa_s->current_ssid;
2838
2839         if (ssid == NULL)
2840                 return;
2841
2842         /* check if the ssid is correctly configured as IBSS/RSN */
2843         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2844                 return;
2845
2846         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2847                              data->rx_mgmt.frame_len);
2848 }
2849 #endif /* CONFIG_IBSS_RSN */
2850
2851
2852 #ifdef CONFIG_IEEE80211R
2853 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2854                          size_t len)
2855 {
2856         const u8 *sta_addr, *target_ap_addr;
2857         u16 status;
2858
2859         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2860         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2861                 return; /* only SME case supported for now */
2862         if (len < 1 + 2 * ETH_ALEN + 2)
2863                 return;
2864         if (data[0] != 2)
2865                 return; /* Only FT Action Response is supported for now */
2866         sta_addr = data + 1;
2867         target_ap_addr = data + 1 + ETH_ALEN;
2868         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2869         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2870                 MACSTR " TargetAP " MACSTR " status %u",
2871                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2872
2873         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2874                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2875                         " in FT Action Response", MAC2STR(sta_addr));
2876                 return;
2877         }
2878
2879         if (status) {
2880                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2881                         "failure (status code %d)", status);
2882                 /* TODO: report error to FT code(?) */
2883                 return;
2884         }
2885
2886         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2887                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2888                                     target_ap_addr, NULL, 0) < 0)
2889                 return;
2890
2891 #ifdef CONFIG_SME
2892         {
2893                 struct wpa_bss *bss;
2894                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2895                 if (bss)
2896                         wpa_s->sme.freq = bss->freq;
2897                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2898                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2899                               WLAN_AUTH_FT);
2900         }
2901 #endif /* CONFIG_SME */
2902 }
2903 #endif /* CONFIG_IEEE80211R */
2904
2905
2906 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2907                                                struct unprot_deauth *e)
2908 {
2909 #ifdef CONFIG_IEEE80211W
2910         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2911                    "dropped: " MACSTR " -> " MACSTR
2912                    " (reason code %u)",
2913                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2914         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2915 #endif /* CONFIG_IEEE80211W */
2916 }
2917
2918
2919 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2920                                                  struct unprot_disassoc *e)
2921 {
2922 #ifdef CONFIG_IEEE80211W
2923         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2924                    "dropped: " MACSTR " -> " MACSTR
2925                    " (reason code %u)",
2926                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2927         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2928 #endif /* CONFIG_IEEE80211W */
2929 }
2930
2931
2932 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2933                                   u16 reason_code, int locally_generated,
2934                                   const u8 *ie, size_t ie_len, int deauth)
2935 {
2936 #ifdef CONFIG_AP
2937         if (wpa_s->ap_iface && addr) {
2938                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2939                 return;
2940         }
2941
2942         if (wpa_s->ap_iface) {
2943                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2944                 return;
2945         }
2946 #endif /* CONFIG_AP */
2947
2948         if (!locally_generated)
2949                 wpa_s->own_disconnect_req = 0;
2950
2951         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2952
2953         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2954               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2955                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2956                eapol_sm_failed(wpa_s->eapol))) &&
2957              !wpa_s->eap_expected_failure))
2958                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2959
2960 #ifdef CONFIG_P2P
2961         if (deauth && reason_code > 0) {
2962                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2963                                           locally_generated) > 0) {
2964                         /*
2965                          * The interface was removed, so cannot continue
2966                          * processing any additional operations after this.
2967                          */
2968                         return;
2969                 }
2970         }
2971 #endif /* CONFIG_P2P */
2972
2973         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2974                                              locally_generated);
2975 }
2976
2977
2978 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2979                                 struct disassoc_info *info)
2980 {
2981         u16 reason_code = 0;
2982         int locally_generated = 0;
2983         const u8 *addr = NULL;
2984         const u8 *ie = NULL;
2985         size_t ie_len = 0;
2986
2987         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2988
2989         if (info) {
2990                 addr = info->addr;
2991                 ie = info->ie;
2992                 ie_len = info->ie_len;
2993                 reason_code = info->reason_code;
2994                 locally_generated = info->locally_generated;
2995                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2996                         locally_generated ? " (locally generated)" : "");
2997                 if (addr)
2998                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2999                                 MAC2STR(addr));
3000                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
3001                             ie, ie_len);
3002         }
3003
3004 #ifdef CONFIG_AP
3005         if (wpa_s->ap_iface && info && info->addr) {
3006                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
3007                 return;
3008         }
3009
3010         if (wpa_s->ap_iface) {
3011                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
3012                 return;
3013         }
3014 #endif /* CONFIG_AP */
3015
3016 #ifdef CONFIG_P2P
3017         if (info) {
3018                 wpas_p2p_disassoc_notif(
3019                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
3020                         locally_generated);
3021         }
3022 #endif /* CONFIG_P2P */
3023
3024         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3025                 sme_event_disassoc(wpa_s, info);
3026
3027         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
3028                               ie, ie_len, 0);
3029 }
3030
3031
3032 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
3033                               struct deauth_info *info)
3034 {
3035         u16 reason_code = 0;
3036         int locally_generated = 0;
3037         const u8 *addr = NULL;
3038         const u8 *ie = NULL;
3039         size_t ie_len = 0;
3040
3041         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
3042
3043         if (info) {
3044                 addr = info->addr;
3045                 ie = info->ie;
3046                 ie_len = info->ie_len;
3047                 reason_code = info->reason_code;
3048                 locally_generated = info->locally_generated;
3049                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
3050                         reason_code,
3051                         locally_generated ? " (locally generated)" : "");
3052                 if (addr) {
3053                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
3054                                 MAC2STR(addr));
3055                 }
3056                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
3057                             ie, ie_len);
3058         }
3059
3060         wpa_reset_ft_completed(wpa_s->wpa);
3061
3062         wpas_event_disconnect(wpa_s, addr, reason_code,
3063                               locally_generated, ie, ie_len, 1);
3064 }
3065
3066
3067 static const char * reg_init_str(enum reg_change_initiator init)
3068 {
3069         switch (init) {
3070         case REGDOM_SET_BY_CORE:
3071                 return "CORE";
3072         case REGDOM_SET_BY_USER:
3073                 return "USER";
3074         case REGDOM_SET_BY_DRIVER:
3075                 return "DRIVER";
3076         case REGDOM_SET_BY_COUNTRY_IE:
3077                 return "COUNTRY_IE";
3078         case REGDOM_BEACON_HINT:
3079                 return "BEACON_HINT";
3080         }
3081         return "?";
3082 }
3083
3084
3085 static const char * reg_type_str(enum reg_type type)
3086 {
3087         switch (type) {
3088         case REGDOM_TYPE_UNKNOWN:
3089                 return "UNKNOWN";
3090         case REGDOM_TYPE_COUNTRY:
3091                 return "COUNTRY";
3092         case REGDOM_TYPE_WORLD:
3093                 return "WORLD";
3094         case REGDOM_TYPE_CUSTOM_WORLD:
3095                 return "CUSTOM_WORLD";
3096         case REGDOM_TYPE_INTERSECTION:
3097                 return "INTERSECTION";
3098         }
3099         return "?";
3100 }
3101
3102
3103 static void wpa_supplicant_update_channel_list(
3104         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
3105 {
3106         struct wpa_supplicant *ifs;
3107
3108         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
3109                 reg_init_str(info->initiator), reg_type_str(info->type),
3110                 info->alpha2[0] ? " alpha2=" : "",
3111                 info->alpha2[0] ? info->alpha2 : "");
3112
3113         if (wpa_s->drv_priv == NULL)
3114                 return; /* Ignore event during drv initialization */
3115
3116         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
3117                          radio_list) {
3118                 wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
3119                            ifs->ifname);
3120                 free_hw_features(ifs);
3121                 ifs->hw.modes = wpa_drv_get_hw_feature_data(
3122                         ifs, &ifs->hw.num_modes, &ifs->hw.flags);
3123         }
3124
3125         /* Restart sched_scan with updated channel list */
3126         if (wpa_s->sched_scanning) {
3127                 wpa_dbg(wpa_s, MSG_DEBUG,
3128                         "Channel list changed restart sched scan.");
3129                 wpa_supplicant_cancel_sched_scan(wpa_s);
3130                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3131         }
3132
3133         wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_DRIVER);
3134 }
3135
3136
3137 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
3138                                       const u8 *frame, size_t len, int freq,
3139                                       int rssi)
3140 {
3141         const struct ieee80211_mgmt *mgmt;
3142         const u8 *payload;
3143         size_t plen;
3144         u8 category;
3145
3146         if (len < IEEE80211_HDRLEN + 2)
3147                 return;
3148
3149         mgmt = (const struct ieee80211_mgmt *) frame;
3150         payload = frame + IEEE80211_HDRLEN;
3151         category = *payload++;
3152         plen = len - IEEE80211_HDRLEN - 1;
3153
3154         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
3155                 " Category=%u DataLen=%d freq=%d MHz",
3156                 MAC2STR(mgmt->sa), category, (int) plen, freq);
3157
3158         if (category == WLAN_ACTION_WMM) {
3159                 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
3160                 return;
3161         }
3162
3163 #ifdef CONFIG_IEEE80211R
3164         if (category == WLAN_ACTION_FT) {
3165                 ft_rx_action(wpa_s, payload, plen);
3166                 return;
3167         }
3168 #endif /* CONFIG_IEEE80211R */
3169
3170 #ifdef CONFIG_IEEE80211W
3171 #ifdef CONFIG_SME
3172         if (category == WLAN_ACTION_SA_QUERY) {
3173                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
3174                 return;
3175         }
3176 #endif /* CONFIG_SME */
3177 #endif /* CONFIG_IEEE80211W */
3178
3179 #ifdef CONFIG_WNM
3180         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
3181                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
3182                 return;
3183         }
3184 #endif /* CONFIG_WNM */
3185
3186 #ifdef CONFIG_GAS
3187         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
3188              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
3189             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
3190                          mgmt->u.action.category,
3191                          payload, plen, freq) == 0)
3192                 return;
3193 #endif /* CONFIG_GAS */
3194
3195 #ifdef CONFIG_TDLS
3196         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
3197             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
3198                 wpa_dbg(wpa_s, MSG_DEBUG,
3199                         "TDLS: Received Discovery Response from " MACSTR,
3200                         MAC2STR(mgmt->sa));
3201                 return;
3202         }
3203 #endif /* CONFIG_TDLS */
3204
3205 #ifdef CONFIG_INTERWORKING
3206         if (category == WLAN_ACTION_QOS && plen >= 1 &&
3207             payload[0] == QOS_QOS_MAP_CONFIG) {
3208                 const u8 *pos = payload + 1;
3209                 size_t qlen = plen - 1;
3210                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
3211                         MACSTR, MAC2STR(mgmt->sa));
3212                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
3213                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
3214                     pos[1] <= qlen - 2 && pos[1] >= 16)
3215                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
3216                 return;
3217         }
3218 #endif /* CONFIG_INTERWORKING */
3219
3220         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3221             payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
3222                 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
3223                 return;
3224         }
3225
3226         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3227             payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
3228                 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
3229                                                          payload + 1, plen - 1,
3230                                                          rssi);
3231                 return;
3232         }
3233
3234 #ifdef CONFIG_FST
3235         if (mgmt->u.action.category == WLAN_ACTION_FST && wpa_s->fst) {
3236                 fst_rx_action(wpa_s->fst, mgmt, len);
3237                 return;
3238         }
3239 #endif /* CONFIG_FST */
3240
3241         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
3242                            category, payload, plen, freq);
3243         if (wpa_s->ifmsh)
3244                 mesh_mpm_action_rx(wpa_s, mgmt, len);
3245 }
3246
3247
3248 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
3249                                              union wpa_event_data *event)
3250 {
3251         struct wpa_freq_range_list *list;
3252         char *str = NULL;
3253
3254         list = &event->freq_range;
3255
3256         if (list->num)
3257                 str = freq_range_list_str(list);
3258         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
3259                 str ? str : "");
3260
3261 #ifdef CONFIG_P2P
3262         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
3263                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
3264                         __func__);
3265         } else {
3266                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
3267
3268                 /*
3269                  * The update channel flow will also take care of moving a GO
3270                  * from the unsafe frequency if needed.
3271                  */
3272                 wpas_p2p_update_channel_list(wpa_s,
3273                                              WPAS_P2P_CHANNEL_UPDATE_AVOID);
3274         }
3275 #endif /* CONFIG_P2P */
3276
3277         os_free(str);
3278 }
3279
3280
3281 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3282                                             union wpa_event_data *data)
3283 {
3284         wpa_dbg(wpa_s, MSG_DEBUG,
3285                 "Connection authorized by device, previous state %d",
3286                 wpa_s->wpa_state);
3287         if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3288                 wpa_supplicant_cancel_auth_timeout(wpa_s);
3289                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3290                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3291                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3292         }
3293         wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3294         wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3295                                data->assoc_info.ptk_kck_len,
3296                                data->assoc_info.ptk_kek,
3297                                data->assoc_info.ptk_kek_len);
3298 }
3299
3300
3301 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3302                           union wpa_event_data *data)
3303 {
3304         struct wpa_supplicant *wpa_s = ctx;
3305         int resched;
3306
3307         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3308             event != EVENT_INTERFACE_ENABLED &&
3309             event != EVENT_INTERFACE_STATUS &&
3310             event != EVENT_SCHED_SCAN_STOPPED) {
3311                 wpa_dbg(wpa_s, MSG_DEBUG,
3312                         "Ignore event %s (%d) while interface is disabled",
3313                         event_to_string(event), event);
3314                 return;
3315         }
3316
3317 #ifndef CONFIG_NO_STDOUT_DEBUG
3318 {
3319         int level = MSG_DEBUG;
3320
3321         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3322                 const struct ieee80211_hdr *hdr;
3323                 u16 fc;
3324                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3325                 fc = le_to_host16(hdr->frame_control);
3326                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3327                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3328                         level = MSG_EXCESSIVE;
3329         }
3330
3331         wpa_dbg(wpa_s, level, "Event %s (%d) received",
3332                 event_to_string(event), event);
3333 }
3334 #endif /* CONFIG_NO_STDOUT_DEBUG */
3335
3336         switch (event) {
3337         case EVENT_AUTH:
3338 #ifdef CONFIG_FST
3339                 if (!wpas_fst_update_mbie(wpa_s, data->auth.ies,
3340                                           data->auth.ies_len))
3341                         wpa_printf(MSG_DEBUG,
3342                                    "FST: MB IEs updated from auth IE");
3343 #endif /* CONFIG_FST */
3344                 sme_event_auth(wpa_s, data);
3345                 break;
3346         case EVENT_ASSOC:
3347                 wpa_supplicant_event_assoc(wpa_s, data);
3348                 if (data && data->assoc_info.authorized)
3349                         wpa_supplicant_event_assoc_auth(wpa_s, data);
3350                 if (data) {
3351                         wpa_msg(wpa_s, MSG_INFO,
3352                                 WPA_EVENT_SUBNET_STATUS_UPDATE "status=%u",
3353                                 data->assoc_info.subnet_status);
3354                 }
3355                 break;
3356         case EVENT_DISASSOC:
3357                 wpas_event_disassoc(wpa_s,
3358                                     data ? &data->disassoc_info : NULL);
3359                 break;
3360         case EVENT_DEAUTH:
3361                 wpas_event_deauth(wpa_s,
3362                                   data ? &data->deauth_info : NULL);
3363                 break;
3364         case EVENT_MICHAEL_MIC_FAILURE:
3365                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3366                 break;
3367 #ifndef CONFIG_NO_SCAN_PROCESSING
3368         case EVENT_SCAN_STARTED:
3369                 if (wpa_s->own_scan_requested ||
3370                     (data && !data->scan_info.external_scan)) {
3371                         struct os_reltime diff;
3372
3373                         os_get_reltime(&wpa_s->scan_start_time);
3374                         os_reltime_sub(&wpa_s->scan_start_time,
3375                                        &wpa_s->scan_trigger_time, &diff);
3376                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3377                                 diff.sec, diff.usec);
3378                         wpa_s->own_scan_requested = 0;
3379                         wpa_s->own_scan_running = 1;
3380                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3381                             wpa_s->manual_scan_use_id) {
3382                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3383                                              WPA_EVENT_SCAN_STARTED "id=%u",
3384                                              wpa_s->manual_scan_id);
3385                         } else {
3386                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3387                                              WPA_EVENT_SCAN_STARTED);
3388                         }
3389                 } else {
3390                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3391                         wpa_s->radio->external_scan_running = 1;
3392                         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3393                 }
3394                 break;
3395         case EVENT_SCAN_RESULTS:
3396                 if (!(data && data->scan_info.external_scan) &&
3397                     os_reltime_initialized(&wpa_s->scan_start_time)) {
3398                         struct os_reltime now, diff;
3399                         os_get_reltime(&now);
3400                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3401                         wpa_s->scan_start_time.sec = 0;
3402                         wpa_s->scan_start_time.usec = 0;
3403                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3404                                 diff.sec, diff.usec);
3405                 }
3406                 if (wpa_supplicant_event_scan_results(wpa_s, data))
3407                         break; /* interface may have been removed */
3408                 if (!(data && data->scan_info.external_scan))
3409                         wpa_s->own_scan_running = 0;
3410                 if (data && data->scan_info.nl_scan_event)
3411                         wpa_s->radio->external_scan_running = 0;
3412                 radio_work_check_next(wpa_s);
3413                 break;
3414 #endif /* CONFIG_NO_SCAN_PROCESSING */
3415         case EVENT_ASSOCINFO:
3416                 wpa_supplicant_event_associnfo(wpa_s, data);
3417                 break;
3418         case EVENT_INTERFACE_STATUS:
3419                 wpa_supplicant_event_interface_status(wpa_s, data);
3420                 break;
3421         case EVENT_PMKID_CANDIDATE:
3422                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3423                 break;
3424 #ifdef CONFIG_PEERKEY
3425         case EVENT_STKSTART:
3426                 wpa_supplicant_event_stkstart(wpa_s, data);
3427                 break;
3428 #endif /* CONFIG_PEERKEY */
3429 #ifdef CONFIG_TDLS
3430         case EVENT_TDLS:
3431                 wpa_supplicant_event_tdls(wpa_s, data);
3432                 break;
3433 #endif /* CONFIG_TDLS */
3434 #ifdef CONFIG_WNM
3435         case EVENT_WNM:
3436                 wpa_supplicant_event_wnm(wpa_s, data);
3437                 break;
3438 #endif /* CONFIG_WNM */
3439 #ifdef CONFIG_IEEE80211R
3440         case EVENT_FT_RESPONSE:
3441                 wpa_supplicant_event_ft_response(wpa_s, data);
3442                 break;
3443 #endif /* CONFIG_IEEE80211R */
3444 #ifdef CONFIG_IBSS_RSN
3445         case EVENT_IBSS_RSN_START:
3446                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3447                 break;
3448 #endif /* CONFIG_IBSS_RSN */
3449         case EVENT_ASSOC_REJECT:
3450                 if (data->assoc_reject.bssid)
3451                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3452                                 "bssid=" MACSTR " status_code=%u",
3453                                 MAC2STR(data->assoc_reject.bssid),
3454                                 data->assoc_reject.status_code);
3455                 else
3456                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3457                                 "status_code=%u",
3458                                 data->assoc_reject.status_code);
3459                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3460                         sme_event_assoc_reject(wpa_s, data);
3461                 else {
3462                         const u8 *bssid = data->assoc_reject.bssid;
3463                         if (bssid == NULL || is_zero_ether_addr(bssid))
3464                                 bssid = wpa_s->pending_bssid;
3465                         wpas_connection_failed(wpa_s, bssid);
3466                         wpa_supplicant_mark_disassoc(wpa_s);
3467                 }
3468                 break;
3469         case EVENT_AUTH_TIMED_OUT:
3470                 /* It is possible to get this event from earlier connection */
3471                 if (wpa_s->current_ssid &&
3472                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3473                         wpa_dbg(wpa_s, MSG_DEBUG,
3474                                 "Ignore AUTH_TIMED_OUT in mesh configuration");
3475                         break;
3476                 }
3477                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3478                         sme_event_auth_timed_out(wpa_s, data);
3479                 break;
3480         case EVENT_ASSOC_TIMED_OUT:
3481                 /* It is possible to get this event from earlier connection */
3482                 if (wpa_s->current_ssid &&
3483                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3484                         wpa_dbg(wpa_s, MSG_DEBUG,
3485                                 "Ignore ASSOC_TIMED_OUT in mesh configuration");
3486                         break;
3487                 }
3488                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3489                         sme_event_assoc_timed_out(wpa_s, data);
3490                 break;
3491         case EVENT_TX_STATUS:
3492                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3493                         " type=%d stype=%d",
3494                         MAC2STR(data->tx_status.dst),
3495                         data->tx_status.type, data->tx_status.stype);
3496 #ifdef CONFIG_AP
3497                 if (wpa_s->ap_iface == NULL) {
3498 #ifdef CONFIG_OFFCHANNEL
3499                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3500                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3501                                 offchannel_send_action_tx_status(
3502                                         wpa_s, data->tx_status.dst,
3503                                         data->tx_status.data,
3504                                         data->tx_status.data_len,
3505                                         data->tx_status.ack ?
3506                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3507                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3508 #endif /* CONFIG_OFFCHANNEL */
3509                         break;
3510                 }
3511 #endif /* CONFIG_AP */
3512 #ifdef CONFIG_OFFCHANNEL
3513                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3514                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3515                 /*
3516                  * Catch TX status events for Action frames we sent via group
3517                  * interface in GO mode.
3518                  */
3519                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3520                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3521                     os_memcmp(wpa_s->parent->pending_action_dst,
3522                               data->tx_status.dst, ETH_ALEN) == 0) {
3523                         offchannel_send_action_tx_status(
3524                                 wpa_s->parent, data->tx_status.dst,
3525                                 data->tx_status.data,
3526                                 data->tx_status.data_len,
3527                                 data->tx_status.ack ?
3528                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3529                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3530                         break;
3531                 }
3532 #endif /* CONFIG_OFFCHANNEL */
3533 #ifdef CONFIG_AP
3534                 switch (data->tx_status.type) {
3535                 case WLAN_FC_TYPE_MGMT:
3536                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3537                                       data->tx_status.data_len,
3538                                       data->tx_status.stype,
3539                                       data->tx_status.ack);
3540                         break;
3541                 case WLAN_FC_TYPE_DATA:
3542                         ap_tx_status(wpa_s, data->tx_status.dst,
3543                                      data->tx_status.data,
3544                                      data->tx_status.data_len,
3545                                      data->tx_status.ack);
3546                         break;
3547                 }
3548 #endif /* CONFIG_AP */
3549                 break;
3550 #ifdef CONFIG_AP
3551         case EVENT_EAPOL_TX_STATUS:
3552                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3553                                    data->eapol_tx_status.data,
3554                                    data->eapol_tx_status.data_len,
3555                                    data->eapol_tx_status.ack);
3556                 break;
3557         case EVENT_DRIVER_CLIENT_POLL_OK:
3558                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3559                 break;
3560         case EVENT_RX_FROM_UNKNOWN:
3561                 if (wpa_s->ap_iface == NULL)
3562                         break;
3563                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3564                                        data->rx_from_unknown.wds);
3565                 break;
3566         case EVENT_CH_SWITCH:
3567                 if (!data || !wpa_s->current_ssid)
3568                         break;
3569
3570                 wpa_s->assoc_freq = data->ch_switch.freq;
3571                 wpa_s->current_ssid->frequency = data->ch_switch.freq;
3572
3573                 if (wpa_s->current_ssid->mode == WPAS_MODE_AP ||
3574                     wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO ||
3575                     wpa_s->current_ssid->mode ==
3576                     WPAS_MODE_P2P_GROUP_FORMATION) {
3577                         wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3578                                           data->ch_switch.ht_enabled,
3579                                           data->ch_switch.ch_offset,
3580                                           data->ch_switch.ch_width,
3581                                           data->ch_switch.cf1,
3582                                           data->ch_switch.cf2);
3583                 }
3584
3585                 wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_CS);
3586                 break;
3587 #ifdef NEED_AP_MLME
3588         case EVENT_DFS_RADAR_DETECTED:
3589                 if (data)
3590                         wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event);
3591                 break;
3592         case EVENT_DFS_CAC_STARTED:
3593                 if (data)
3594                         wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
3595                 break;
3596         case EVENT_DFS_CAC_FINISHED:
3597                 if (data)
3598                         wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
3599                 break;
3600         case EVENT_DFS_CAC_ABORTED:
3601                 if (data)
3602                         wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
3603                 break;
3604         case EVENT_DFS_NOP_FINISHED:
3605                 if (data)
3606                         wpas_event_dfs_cac_nop_finished(wpa_s,
3607                                                         &data->dfs_event);
3608                 break;
3609 #endif /* NEED_AP_MLME */
3610 #endif /* CONFIG_AP */
3611         case EVENT_RX_MGMT: {
3612                 u16 fc, stype;
3613                 const struct ieee80211_mgmt *mgmt;
3614
3615 #ifdef CONFIG_TESTING_OPTIONS
3616                 if (wpa_s->ext_mgmt_frame_handling) {
3617                         struct rx_mgmt *rx = &data->rx_mgmt;
3618                         size_t hex_len = 2 * rx->frame_len + 1;
3619                         char *hex = os_malloc(hex_len);
3620                         if (hex) {
3621                                 wpa_snprintf_hex(hex, hex_len,
3622                                                  rx->frame, rx->frame_len);
3623                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3624                                         rx->freq, rx->datarate, rx->ssi_signal,
3625                                         hex);
3626                                 os_free(hex);
3627                         }
3628                         break;
3629                 }
3630 #endif /* CONFIG_TESTING_OPTIONS */
3631
3632                 mgmt = (const struct ieee80211_mgmt *)
3633                         data->rx_mgmt.frame;
3634                 fc = le_to_host16(mgmt->frame_control);
3635                 stype = WLAN_FC_GET_STYPE(fc);
3636
3637 #ifdef CONFIG_AP
3638                 if (wpa_s->ap_iface == NULL) {
3639 #endif /* CONFIG_AP */
3640 #ifdef CONFIG_P2P
3641                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3642                             data->rx_mgmt.frame_len > 24) {
3643                                 const u8 *src = mgmt->sa;
3644                                 const u8 *ie = mgmt->u.probe_req.variable;
3645                                 size_t ie_len = data->rx_mgmt.frame_len -
3646                                         (mgmt->u.probe_req.variable -
3647                                          data->rx_mgmt.frame);
3648                                 wpas_p2p_probe_req_rx(
3649                                         wpa_s, src, mgmt->da,
3650                                         mgmt->bssid, ie, ie_len,
3651                                         data->rx_mgmt.freq,
3652                                         data->rx_mgmt.ssi_signal);
3653                                 break;
3654                         }
3655 #endif /* CONFIG_P2P */
3656 #ifdef CONFIG_IBSS_RSN
3657                         if (wpa_s->current_ssid &&
3658                             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3659                             stype == WLAN_FC_STYPE_AUTH &&
3660                             data->rx_mgmt.frame_len >= 30) {
3661                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3662                                 break;
3663                         }
3664 #endif /* CONFIG_IBSS_RSN */
3665
3666                         if (stype == WLAN_FC_STYPE_ACTION) {
3667                                 wpas_event_rx_mgmt_action(
3668                                         wpa_s, data->rx_mgmt.frame,
3669                                         data->rx_mgmt.frame_len,
3670                                         data->rx_mgmt.freq,
3671                                         data->rx_mgmt.ssi_signal);
3672                                 break;
3673                         }
3674
3675                         if (wpa_s->ifmsh) {
3676                                 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3677                                 break;
3678                         }
3679
3680                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3681                                 "management frame in non-AP mode");
3682                         break;
3683 #ifdef CONFIG_AP
3684                 }
3685
3686                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3687                     data->rx_mgmt.frame_len > 24) {
3688                         const u8 *ie = mgmt->u.probe_req.variable;
3689                         size_t ie_len = data->rx_mgmt.frame_len -
3690                                 (mgmt->u.probe_req.variable -
3691                                  data->rx_mgmt.frame);
3692
3693                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3694                                          mgmt->bssid, ie, ie_len,
3695                                          data->rx_mgmt.ssi_signal);
3696                 }
3697
3698                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3699 #endif /* CONFIG_AP */
3700                 break;
3701                 }
3702         case EVENT_RX_PROBE_REQ:
3703                 if (data->rx_probe_req.sa == NULL ||
3704                     data->rx_probe_req.ie == NULL)
3705                         break;
3706 #ifdef CONFIG_AP
3707                 if (wpa_s->ap_iface) {
3708                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3709                                              data->rx_probe_req.sa,
3710                                              data->rx_probe_req.da,
3711                                              data->rx_probe_req.bssid,
3712                                              data->rx_probe_req.ie,
3713                                              data->rx_probe_req.ie_len,
3714                                              data->rx_probe_req.ssi_signal);
3715                         break;
3716                 }
3717 #endif /* CONFIG_AP */
3718                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3719                                       data->rx_probe_req.da,
3720                                       data->rx_probe_req.bssid,
3721                                       data->rx_probe_req.ie,
3722                                       data->rx_probe_req.ie_len,
3723                                       0,
3724                                       data->rx_probe_req.ssi_signal);
3725                 break;
3726         case EVENT_REMAIN_ON_CHANNEL:
3727 #ifdef CONFIG_OFFCHANNEL
3728                 offchannel_remain_on_channel_cb(
3729                         wpa_s, data->remain_on_channel.freq,
3730                         data->remain_on_channel.duration);
3731 #endif /* CONFIG_OFFCHANNEL */
3732                 wpas_p2p_remain_on_channel_cb(
3733                         wpa_s, data->remain_on_channel.freq,
3734                         data->remain_on_channel.duration);
3735                 break;
3736         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3737 #ifdef CONFIG_OFFCHANNEL
3738                 offchannel_cancel_remain_on_channel_cb(
3739                         wpa_s, data->remain_on_channel.freq);
3740 #endif /* CONFIG_OFFCHANNEL */
3741                 wpas_p2p_cancel_remain_on_channel_cb(
3742                         wpa_s, data->remain_on_channel.freq);
3743                 break;
3744         case EVENT_EAPOL_RX:
3745                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3746                                         data->eapol_rx.data,
3747                                         data->eapol_rx.data_len);
3748                 break;
3749         case EVENT_SIGNAL_CHANGE:
3750                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3751                         "above=%d signal=%d noise=%d txrate=%d",
3752                         data->signal_change.above_threshold,
3753                         data->signal_change.current_signal,
3754                         data->signal_change.current_noise,
3755                         data->signal_change.current_txrate);
3756                 wpa_bss_update_level(wpa_s->current_bss,
3757                                      data->signal_change.current_signal);
3758                 bgscan_notify_signal_change(
3759                         wpa_s, data->signal_change.above_threshold,
3760                         data->signal_change.current_signal,
3761                         data->signal_change.current_noise,
3762                         data->signal_change.current_txrate);
3763                 break;
3764         case EVENT_INTERFACE_ENABLED:
3765                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3766                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3767                         wpa_supplicant_update_mac_addr(wpa_s);
3768                         if (wpa_s->p2p_mgmt) {
3769                                 wpa_supplicant_set_state(wpa_s,
3770                                                          WPA_DISCONNECTED);
3771                                 break;
3772                         }
3773
3774 #ifdef CONFIG_AP
3775                         if (!wpa_s->ap_iface) {
3776                                 wpa_supplicant_set_state(wpa_s,
3777                                                          WPA_DISCONNECTED);
3778                                 wpa_s->scan_req = NORMAL_SCAN_REQ;
3779                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3780                         } else
3781                                 wpa_supplicant_set_state(wpa_s,
3782                                                          WPA_COMPLETED);
3783 #else /* CONFIG_AP */
3784                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3785                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3786 #endif /* CONFIG_AP */
3787                 }
3788                 break;
3789         case EVENT_INTERFACE_DISABLED:
3790                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3791 #ifdef CONFIG_P2P
3792                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3793                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3794                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3795                         /*
3796                          * Mark interface disabled if this happens to end up not
3797                          * being removed as a separate P2P group interface.
3798                          */
3799                         wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3800                         /*
3801                          * The interface was externally disabled. Remove
3802                          * it assuming an external entity will start a
3803                          * new session if needed.
3804                          */
3805                         if (wpa_s->current_ssid &&
3806                             wpa_s->current_ssid->p2p_group)
3807                                 wpas_p2p_interface_unavailable(wpa_s);
3808                         else
3809                                 wpas_p2p_disconnect(wpa_s);
3810                         /*
3811                          * wpa_s instance may have been freed, so must not use
3812                          * it here anymore.
3813                          */
3814                         break;
3815                 }
3816                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3817                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3818                         /* This radio work will be cancelled, so clear P2P
3819                          * state as well.
3820                          */
3821                         p2p_stop_find(wpa_s->global->p2p);
3822                 }
3823 #endif /* CONFIG_P2P */
3824
3825                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3826                         /*
3827                          * Indicate disconnection to keep ctrl_iface events
3828                          * consistent.
3829                          */
3830                         wpa_supplicant_event_disassoc(
3831                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3832                 }
3833                 wpa_supplicant_mark_disassoc(wpa_s);
3834                 radio_remove_works(wpa_s, NULL, 0);
3835
3836                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3837                 break;
3838         case EVENT_CHANNEL_LIST_CHANGED:
3839                 wpa_supplicant_update_channel_list(
3840                         wpa_s, &data->channel_list_changed);
3841                 break;
3842         case EVENT_INTERFACE_UNAVAILABLE:
3843                 wpas_p2p_interface_unavailable(wpa_s);
3844                 break;
3845         case EVENT_BEST_CHANNEL:
3846                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3847                         "(%d %d %d)",
3848                         data->best_chan.freq_24, data->best_chan.freq_5,
3849                         data->best_chan.freq_overall);
3850                 wpa_s->best_24_freq = data->best_chan.freq_24;
3851                 wpa_s->best_5_freq = data->best_chan.freq_5;
3852                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3853                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3854                                               data->best_chan.freq_5,
3855                                               data->best_chan.freq_overall);
3856                 break;
3857         case EVENT_UNPROT_DEAUTH:
3858                 wpa_supplicant_event_unprot_deauth(wpa_s,
3859                                                    &data->unprot_deauth);
3860                 break;
3861         case EVENT_UNPROT_DISASSOC:
3862                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3863                                                      &data->unprot_disassoc);
3864                 break;
3865         case EVENT_STATION_LOW_ACK:
3866 #ifdef CONFIG_AP
3867                 if (wpa_s->ap_iface && data)
3868                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3869                                                   data->low_ack.addr);
3870 #endif /* CONFIG_AP */
3871 #ifdef CONFIG_TDLS
3872                 if (data)
3873                         wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3874                                                           data->low_ack.addr);
3875 #endif /* CONFIG_TDLS */
3876                 break;
3877         case EVENT_IBSS_PEER_LOST:
3878 #ifdef CONFIG_IBSS_RSN
3879                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3880 #endif /* CONFIG_IBSS_RSN */
3881                 break;
3882         case EVENT_DRIVER_GTK_REKEY:
3883                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3884                               wpa_s->bssid, ETH_ALEN))
3885                         break;
3886                 if (!wpa_s->wpa)
3887                         break;
3888                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3889                                          data->driver_gtk_rekey.replay_ctr);
3890                 break;
3891         case EVENT_SCHED_SCAN_STOPPED:
3892                 wpa_s->pno = 0;
3893                 wpa_s->sched_scanning = 0;
3894                 resched = wpa_s->scanning;
3895                 wpa_supplicant_notify_scanning(wpa_s, 0);
3896
3897                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3898                         break;
3899
3900                 /*
3901                  * Start a new sched scan to continue searching for more SSIDs
3902                  * either if timed out or PNO schedule scan is pending.
3903                  */
3904                 if (wpa_s->sched_scan_timed_out) {
3905                         wpa_supplicant_req_sched_scan(wpa_s);
3906                 } else if (wpa_s->pno_sched_pending) {
3907                         wpa_s->pno_sched_pending = 0;
3908                         wpas_start_pno(wpa_s);
3909                 } else if (resched) {
3910                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3911                 }
3912
3913                 break;
3914         case EVENT_WPS_BUTTON_PUSHED:
3915 #ifdef CONFIG_WPS
3916                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3917 #endif /* CONFIG_WPS */
3918                 break;
3919         case EVENT_AVOID_FREQUENCIES:
3920                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3921                 break;
3922         case EVENT_CONNECT_FAILED_REASON:
3923 #ifdef CONFIG_AP
3924                 if (!wpa_s->ap_iface || !data)
3925                         break;
3926                 hostapd_event_connect_failed_reason(
3927                         wpa_s->ap_iface->bss[0],
3928                         data->connect_failed_reason.addr,
3929                         data->connect_failed_reason.code);
3930 #endif /* CONFIG_AP */
3931                 break;
3932         case EVENT_NEW_PEER_CANDIDATE:
3933 #ifdef CONFIG_MESH
3934                 if (!wpa_s->ifmsh || !data)
3935                         break;
3936                 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
3937                                      data->mesh_peer.ies,
3938                                      data->mesh_peer.ie_len);
3939 #endif /* CONFIG_MESH */
3940                 break;
3941         case EVENT_SURVEY:
3942 #ifdef CONFIG_AP
3943                 if (!wpa_s->ap_iface)
3944                         break;
3945                 hostapd_event_get_survey(wpa_s->ap_iface,
3946                                          &data->survey_results);
3947 #endif /* CONFIG_AP */
3948                 break;
3949         case EVENT_ACS_CHANNEL_SELECTED:
3950 #ifdef CONFIG_ACS
3951                 if (!wpa_s->ap_iface)
3952                         break;
3953                 hostapd_acs_channel_selected(wpa_s->ap_iface->bss[0],
3954                                              &data->acs_selected_channels);
3955 #endif /* CONFIG_ACS */
3956                 break;
3957         default:
3958                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3959                 break;
3960         }
3961 }