wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2012, 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 "wnm_sta.h"
  27 #include "notify.h"
  28 #include "common/ieee802_11_defs.h"
  29 #include "common/ieee802_11_common.h"
  30 #include "crypto/random.h"
  31 #include "blacklist.h"
  32 #include "wpas_glue.h"
  33 #include "wps_supplicant.h"
  34 #include "ibss_rsn.h"
  35 #include "sme.h"
  36 #include "gas_query.h"
  37 #include "p2p_supplicant.h"
  38 #include "bgscan.h"
  39 #include "autoscan.h"
  40 #include "ap.h"
  41 #include "bss.h"
  42 #include "scan.h"
  43 #include "offchannel.h"
  44 #include "interworking.h"
  45
  46
  47 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s);
  48
  49
  50 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  51                               struct wpa_ssid *ssid)
  52 {
  53         struct os_time now;
  54
  55         if (ssid == NULL || ssid->disabled_until.sec == 0)
  56                 return 0;
  57
  58         os_get_time(&now);
  59         if (ssid->disabled_until.sec > now.sec)
  60                 return ssid->disabled_until.sec - now.sec;
  61
  62         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  63
  64         return 0;
  65 }
  66
  67
  68 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  69 {
  70         struct wpa_ssid *ssid, *old_ssid;
  71         int res;
  72
  73         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  74                 return 0;
  75
  76         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  77                 "information");
  78         ssid = wpa_supplicant_get_ssid(wpa_s);
  79         if (ssid == NULL) {
  80                 wpa_msg(wpa_s, MSG_INFO,
  81                         "No network configuration found for the current AP");
  82                 return -1;
  83         }
  84
  85         if (wpas_network_disabled(wpa_s, ssid)) {
  86                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
  87                 return -1;
  88         }
  89
  90         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
  91             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
  92                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
  93                 return -1;
  94         }
  95
  96         res = wpas_temp_disabled(wpa_s, ssid);
  97         if (res > 0) {
  98                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
  99                         "disabled for %d second(s)", res);
 100                 return -1;
 101         }
 102
 103         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 104                 "current AP");
 105         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 106                 u8 wpa_ie[80];
 107                 size_t wpa_ie_len = sizeof(wpa_ie);
 108                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 109                                               wpa_ie, &wpa_ie_len) < 0)
 110                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 111         } else {
 112                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 113         }
 114
 115         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 116                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 117         old_ssid = wpa_s->current_ssid;
 118         wpa_s->current_ssid = ssid;
 119         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 120         wpa_supplicant_initiate_eapol(wpa_s);
 121         if (old_ssid != wpa_s->current_ssid)
 122                 wpas_notify_network_changed(wpa_s);
 123
 124         return 0;
 125 }
 126
 127
 128 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 129 {
 130         struct wpa_supplicant *wpa_s = eloop_ctx;
 131
 132         if (wpa_s->countermeasures) {
 133                 wpa_s->countermeasures = 0;
 134                 wpa_drv_set_countermeasures(wpa_s, 0);
 135                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 136                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 137         }
 138 }
 139
 140
 141 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 142 {
 143         int bssid_changed;
 144
 145         wnm_bss_keep_alive_deinit(wpa_s);
 146
 147 #ifdef CONFIG_IBSS_RSN
 148         ibss_rsn_deinit(wpa_s->ibss_rsn);
 149         wpa_s->ibss_rsn = NULL;
 150 #endif /* CONFIG_IBSS_RSN */
 151
 152 #ifdef CONFIG_AP
 153         wpa_supplicant_ap_deinit(wpa_s);
 154 #endif /* CONFIG_AP */
 155
 156         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 157                 return;
 158
 159         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 160 #ifdef ANDROID
 161         wpa_s->conf->ap_scan = DEFAULT_AP_SCAN;
 162 #endif
 163         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 164         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 165         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 166 #ifdef CONFIG_SME
 167         wpa_s->sme.prev_bssid_set = 0;
 168 #endif /* CONFIG_SME */
 169 #ifdef CONFIG_P2P
 170         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 171 #endif /* CONFIG_P2P */
 172         wpa_s->current_bss = NULL;
 173         wpa_s->assoc_freq = 0;
 174 #ifdef CONFIG_IEEE80211R
 175 #ifdef CONFIG_SME
 176         if (wpa_s->sme.ft_ies)
 177                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 178 #endif /* CONFIG_SME */
 179 #endif /* CONFIG_IEEE80211R */
 180
 181         if (bssid_changed)
 182                 wpas_notify_bssid_changed(wpa_s);
 183
 184         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 185         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 186         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 187                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 188         wpa_s->ap_ies_from_associnfo = 0;
 189         wpa_s->current_ssid = NULL;
 190         wpa_s->key_mgmt = 0;
 191 }
 192
 193
 194 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 195 {
 196         struct wpa_ie_data ie;
 197         int pmksa_set = -1;
 198         size_t i;
 199
 200         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 201             ie.pmkid == NULL)
 202                 return;
 203
 204         for (i = 0; i < ie.num_pmkid; i++) {
 205                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 206                                                     ie.pmkid + i * PMKID_LEN,
 207                                                     NULL, NULL, 0);
 208                 if (pmksa_set == 0) {
 209                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 210                         break;
 211                 }
 212         }
 213
 214         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 215                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 216 }
 217
 218
 219 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 220                                                  union wpa_event_data *data)
 221 {
 222         if (data == NULL) {
 223                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 224                         "event");
 225                 return;
 226         }
 227         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 228                 " index=%d preauth=%d",
 229                 MAC2STR(data->pmkid_candidate.bssid),
 230                 data->pmkid_candidate.index,
 231                 data->pmkid_candidate.preauth);
 232
 233         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 234                             data->pmkid_candidate.index,
 235                             data->pmkid_candidate.preauth);
 236 }
 237
 238
 239 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 240 {
 241         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 242             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 243                 return 0;
 244
 245 #ifdef IEEE8021X_EAPOL
 246         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 247             wpa_s->current_ssid &&
 248             !(wpa_s->current_ssid->eapol_flags &
 249               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 250                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 251                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 252                  * plaintext or static WEP keys). */
 253                 return 0;
 254         }
 255 #endif /* IEEE8021X_EAPOL */
 256
 257         return 1;
 258 }
 259
 260
 261 /**
 262  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 263  * @wpa_s: pointer to wpa_supplicant data
 264  * @ssid: Configuration data for the network
 265  * Returns: 0 on success, -1 on failure
 266  *
 267  * This function is called when starting authentication with a network that is
 268  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 269  */
 270 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 271                               struct wpa_ssid *ssid)
 272 {
 273 #ifdef IEEE8021X_EAPOL
 274 #ifdef PCSC_FUNCS
 275         int aka = 0, sim = 0, type;
 276
 277         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 278                 return 0;
 279
 280         if (ssid->eap.eap_methods == NULL) {
 281                 sim = 1;
 282                 aka = 1;
 283         } else {
 284                 struct eap_method_type *eap = ssid->eap.eap_methods;
 285                 while (eap->vendor != EAP_VENDOR_IETF ||
 286                        eap->method != EAP_TYPE_NONE) {
 287                         if (eap->vendor == EAP_VENDOR_IETF) {
 288                                 if (eap->method == EAP_TYPE_SIM)
 289                                         sim = 1;
 290                                 else if (eap->method == EAP_TYPE_AKA ||
 291                                          eap->method == EAP_TYPE_AKA_PRIME)
 292                                         aka = 1;
 293                         }
 294                         eap++;
 295                 }
 296         }
 297
 298         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 299                 sim = 0;
 300         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 301             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 302             NULL)
 303                 aka = 0;
 304
 305         if (!sim && !aka) {
 306                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 307                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 308                         "enabled");
 309                 return 0;
 310         }
 311
 312         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 313                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 314         if (sim && aka)
 315                 type = SCARD_TRY_BOTH;
 316         else if (aka)
 317                 type = SCARD_USIM_ONLY;
 318         else
 319                 type = SCARD_GSM_SIM_ONLY;
 320
 321         wpa_s->scard = scard_init(type, NULL);
 322         if (wpa_s->scard == NULL) {
 323                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 324                         "(pcsc-lite)");
 325                 return -1;
 326         }
 327         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 328         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 329 #endif /* PCSC_FUNCS */
 330 #endif /* IEEE8021X_EAPOL */
 331
 332         return 0;
 333 }
 334
 335
 336 #ifndef CONFIG_NO_SCAN_PROCESSING
 337 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 338                                         struct wpa_ssid *ssid)
 339 {
 340         int i, privacy = 0;
 341
 342         if (ssid->mixed_cell)
 343                 return 1;
 344
 345 #ifdef CONFIG_WPS
 346         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 347                 return 1;
 348 #endif /* CONFIG_WPS */
 349
 350         for (i = 0; i < NUM_WEP_KEYS; i++) {
 351                 if (ssid->wep_key_len[i]) {
 352                         privacy = 1;
 353                         break;
 354                 }
 355         }
 356 #ifdef IEEE8021X_EAPOL
 357         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 358             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 359                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 360                 privacy = 1;
 361 #endif /* IEEE8021X_EAPOL */
 362
 363         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 364                 privacy = 1;
 365
 366         if (bss->caps & IEEE80211_CAP_PRIVACY)
 367                 return privacy;
 368         return !privacy;
 369 }
 370
 371
 372 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 373                                          struct wpa_ssid *ssid,
 374                                          struct wpa_bss *bss)
 375 {
 376         struct wpa_ie_data ie;
 377         int proto_match = 0;
 378         const u8 *rsn_ie, *wpa_ie;
 379         int ret;
 380         int wep_ok;
 381
 382         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 383         if (ret >= 0)
 384                 return ret;
 385
 386         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 387         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 388                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 389                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 390                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 391
 392         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 393         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 394                 proto_match++;
 395
 396                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 397                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 398                                 "failed");
 399                         break;
 400                 }
 401
 402                 if (wep_ok &&
 403                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 404                 {
 405                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 406                                 "in RSN IE");
 407                         return 1;
 408                 }
 409
 410                 if (!(ie.proto & ssid->proto)) {
 411                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 412                                 "mismatch");
 413                         break;
 414                 }
 415
 416                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 417                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 418                                 "cipher mismatch");
 419                         break;
 420                 }
 421
 422                 if (!(ie.group_cipher & ssid->group_cipher)) {
 423                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 424                                 "cipher mismatch");
 425                         break;
 426                 }
 427
 428                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 429                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 430                                 "mismatch");
 431                         break;
 432                 }
 433
 434 #ifdef CONFIG_IEEE80211W
 435                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 436                     (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
 437                      wpa_s->conf->pmf : ssid->ieee80211w) ==
 438                     MGMT_FRAME_PROTECTION_REQUIRED) {
 439                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 440                                 "frame protection");
 441                         break;
 442                 }
 443 #endif /* CONFIG_IEEE80211W */
 444
 445                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 446                 return 1;
 447         }
 448
 449         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 450         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 451                 proto_match++;
 452
 453                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 454                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 455                                 "failed");
 456                         break;
 457                 }
 458
 459                 if (wep_ok &&
 460                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 461                 {
 462                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 463                                 "in WPA IE");
 464                         return 1;
 465                 }
 466
 467                 if (!(ie.proto & ssid->proto)) {
 468                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 469                                 "mismatch");
 470                         break;
 471                 }
 472
 473                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 474                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 475                                 "cipher mismatch");
 476                         break;
 477                 }
 478
 479                 if (!(ie.group_cipher & ssid->group_cipher)) {
 480                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 481                                 "cipher mismatch");
 482                         break;
 483                 }
 484
 485                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 486                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 487                                 "mismatch");
 488                         break;
 489                 }
 490
 491                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 492                 return 1;
 493         }
 494
 495         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 496             !rsn_ie) {
 497                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 498                 return 1;
 499         }
 500
 501         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 502             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 503                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 504                 return 0;
 505         }
 506
 507         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 508                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 509                 return 1;
 510         }
 511
 512         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 513                 "WPA/WPA2");
 514
 515         return 0;
 516 }
 517
 518
 519 static int freq_allowed(int *freqs, int freq)
 520 {
 521         int i;
 522
 523         if (freqs == NULL)
 524                 return 1;
 525
 526         for (i = 0; freqs[i]; i++)
 527                 if (freqs[i] == freq)
 528                         return 1;
 529         return 0;
 530 }
 531
 532
 533 static int ht_supported(const struct hostapd_hw_modes *mode)
 534 {
 535         if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
 536                 /*
 537                  * The driver did not indicate whether it supports HT. Assume
 538                  * it does to avoid connection issues.
 539                  */
 540                 return 1;
 541         }
 542
 543         /*
 544          * IEEE Std 802.11n-2009 20.1.1:
 545          * An HT non-AP STA shall support all EQM rates for one spatial stream.
 546          */
 547         return mode->mcs_set[0] == 0xff;
 548 }
 549
 550
 551 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 552 {
 553         const struct hostapd_hw_modes *mode = NULL, *modes;
 554         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 555         const u8 *rate_ie;
 556         int i, j, k;
 557
 558         if (bss->freq == 0)
 559                 return 1; /* Cannot do matching without knowing band */
 560
 561         modes = wpa_s->hw.modes;
 562         if (modes == NULL) {
 563                 /*
 564                  * The driver does not provide any additional information
 565                  * about the utilized hardware, so allow the connection attempt
 566                  * to continue.
 567                  */
 568                 return 1;
 569         }
 570
 571         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 572                 for (j = 0; j < modes[i].num_channels; j++) {
 573                         int freq = modes[i].channels[j].freq;
 574                         if (freq == bss->freq) {
 575                                 if (mode &&
 576                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 577                                         break; /* do not allow 802.11b replace
 578                                                 * 802.11g */
 579                                 mode = &modes[i];
 580                                 break;
 581                         }
 582                 }
 583         }
 584
 585         if (mode == NULL)
 586                 return 0;
 587
 588         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 589                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 590                 if (rate_ie == NULL)
 591                         continue;
 592
 593                 for (j = 2; j < rate_ie[1] + 2; j++) {
 594                         int flagged = !!(rate_ie[j] & 0x80);
 595                         int r = (rate_ie[j] & 0x7f) * 5;
 596
 597                         /*
 598                          * IEEE Std 802.11n-2009 7.3.2.2:
 599                          * The new BSS Membership selector value is encoded
 600                          * like a legacy basic rate, but it is not a rate and
 601                          * only indicates if the BSS members are required to
 602                          * support the mandatory features of Clause 20 [HT PHY]
 603                          * in order to join the BSS.
 604                          */
 605                         if (flagged && ((rate_ie[j] & 0x7f) ==
 606                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 607                                 if (!ht_supported(mode)) {
 608                                         wpa_dbg(wpa_s, MSG_DEBUG,
 609                                                 "   hardware does not support "
 610                                                 "HT PHY");
 611                                         return 0;
 612                                 }
 613                                 continue;
 614                         }
 615
 616                         if (!flagged)
 617                                 continue;
 618
 619                         /* check for legacy basic rates */
 620                         for (k = 0; k < mode->num_rates; k++) {
 621                                 if (mode->rates[k] == r)
 622                                         break;
 623                         }
 624                         if (k == mode->num_rates) {
 625                                 /*
 626                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 627                                  * order to join a BSS all required rates
 628                                  * have to be supported by the hardware.
 629                                  */
 630                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 631                                         "not support required rate %d.%d Mbps",
 632                                         r / 10, r % 10);
 633                                 return 0;
 634                         }
 635                 }
 636         }
 637
 638         return 1;
 639 }
 640
 641
 642 static int bss_is_dmg(struct wpa_bss *bss)
 643 {
 644         return bss->freq > 45000;
 645 }
 646
 647
 648 /*
 649  * Test whether BSS is in an ESS.
 650  * This is done differently in DMG (60 GHz) and non-DMG bands
 651  */
 652 static int bss_is_ess(struct wpa_bss *bss)
 653 {
 654         if (bss_is_dmg(bss)) {
 655                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 656                         IEEE80211_CAP_DMG_AP;
 657         }
 658
 659         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 660                 IEEE80211_CAP_ESS);
 661 }
 662
 663
 664 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 665                                             int i, struct wpa_bss *bss,
 666                                             struct wpa_ssid *group)
 667 {
 668         u8 wpa_ie_len, rsn_ie_len;
 669         int wpa;
 670         struct wpa_blacklist *e;
 671         const u8 *ie;
 672         struct wpa_ssid *ssid;
 673
 674         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 675         wpa_ie_len = ie ? ie[1] : 0;
 676
 677         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 678         rsn_ie_len = ie ? ie[1] : 0;
 679
 680         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 681                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
 682                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 683                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 684                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
 685
 686         e = wpa_blacklist_get(wpa_s, bss->bssid);
 687         if (e) {
 688                 int limit = 1;
 689                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 690                         /*
 691                          * When only a single network is enabled, we can
 692                          * trigger blacklisting on the first failure. This
 693                          * should not be done with multiple enabled networks to
 694                          * avoid getting forced to move into a worse ESS on
 695                          * single error if there are no other BSSes of the
 696                          * current ESS.
 697                          */
 698                         limit = 0;
 699                 }
 700                 if (e->count > limit) {
 701                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 702                                 "(count=%d limit=%d)", e->count, limit);
 703                         return NULL;
 704                 }
 705         }
 706
 707         if (bss->ssid_len == 0) {
 708                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 709                 return NULL;
 710         }
 711
 712         if (disallowed_bssid(wpa_s, bss->bssid)) {
 713                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 714                 return NULL;
 715         }
 716
 717         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 718                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 719                 return NULL;
 720         }
 721
 722         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 723
 724         for (ssid = group; ssid; ssid = ssid->pnext) {
 725                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 726                 int res;
 727
 728                 if (wpas_network_disabled(wpa_s, ssid)) {
 729                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 730                         continue;
 731                 }
 732
 733                 res = wpas_temp_disabled(wpa_s, ssid);
 734                 if (res > 0) {
 735                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 736                                 "temporarily for %d second(s)", res);
 737                         continue;
 738                 }
 739
 740 #ifdef CONFIG_WPS
 741                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 742                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 743                                 "(WPS)");
 744                         continue;
 745                 }
 746
 747                 if (wpa && ssid->ssid_len == 0 &&
 748                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 749                         check_ssid = 0;
 750
 751                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 752                         /* Only allow wildcard SSID match if an AP
 753                          * advertises active WPS operation that matches
 754                          * with our mode. */
 755                         check_ssid = 1;
 756                         if (ssid->ssid_len == 0 &&
 757                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 758                                 check_ssid = 0;
 759                 }
 760 #endif /* CONFIG_WPS */
 761
 762                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 763                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 764                         check_ssid = 0;
 765
 766                 if (check_ssid &&
 767                     (bss->ssid_len != ssid->ssid_len ||
 768                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 769                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 770                         continue;
 771                 }
 772
 773                 if (ssid->bssid_set &&
 774                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 775                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 776                         continue;
 777                 }
 778
 779                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 780                         continue;
 781
 782                 if (!wpa &&
 783                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 784                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 785                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 786                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 787                                 "not allowed");
 788                         continue;
 789                 }
 790
 791                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 792                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 793                                 "mismatch");
 794                         continue;
 795                 }
 796
 797                 if (!bss_is_ess(bss)) {
 798                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 799                         continue;
 800                 }
 801
 802                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 803                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 804                                 "allowed");
 805                         continue;
 806                 }
 807
 808                 if (!rate_match(wpa_s, bss)) {
 809                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 810                                 "not match");
 811                         continue;
 812                 }
 813
 814 #ifdef CONFIG_P2P
 815                 /*
 816                  * TODO: skip the AP if its P2P IE has Group Formation
 817                  * bit set in the P2P Group Capability Bitmap and we
 818                  * are not in Group Formation with that device.
 819                  */
 820 #endif /* CONFIG_P2P */
 821
 822                 /* Matching configuration found */
 823                 return ssid;
 824         }
 825
 826         /* No matching configuration found */
 827         return NULL;
 828 }
 829
 830
 831 static struct wpa_bss *
 832 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 833                           struct wpa_ssid *group,
 834                           struct wpa_ssid **selected_ssid)
 835 {
 836         unsigned int i;
 837
 838         wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 839                 group->priority);
 840
 841         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 842                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 843                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
 844                 if (!*selected_ssid)
 845                         continue;
 846                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 847                         " ssid='%s'",
 848                         MAC2STR(bss->bssid),
 849                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
 850                 return bss;
 851         }
 852
 853         return NULL;
 854 }
 855
 856
 857 static struct wpa_bss *
 858 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 859                             struct wpa_ssid **selected_ssid)
 860 {
 861         struct wpa_bss *selected = NULL;
 862         int prio;
 863
 864         if (wpa_s->last_scan_res == NULL ||
 865             wpa_s->last_scan_res_used == 0)
 866                 return NULL; /* no scan results from last update */
 867
 868         while (selected == NULL) {
 869                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 870                         selected = wpa_supplicant_select_bss(
 871                                 wpa_s, wpa_s->conf->pssid[prio],
 872                                 selected_ssid);
 873                         if (selected)
 874                                 break;
 875                 }
 876
 877                 if (selected == NULL && wpa_s->blacklist &&
 878                     !wpa_s->countermeasures) {
 879                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
 880                                 "blacklist and try again");
 881                         wpa_blacklist_clear(wpa_s);
 882                         wpa_s->blacklist_cleared++;
 883                 } else if (selected == NULL)
 884                         break;
 885         }
 886
 887         return selected;
 888 }
 889
 890
 891 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 892                                         int timeout_sec, int timeout_usec)
 893 {
 894         if (!wpa_supplicant_enabled_networks(wpa_s)) {
 895                 /*
 896                  * No networks are enabled; short-circuit request so
 897                  * we don't wait timeout seconds before transitioning
 898                  * to INACTIVE state.
 899                  */
 900                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
 901                         "since there are no enabled networks");
 902                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 903 #ifdef CONFIG_P2P
 904                 wpa_s->sta_scan_pending = 0;
 905 #endif /* CONFIG_P2P */
 906                 return;
 907         }
 908
 909         wpa_s->scan_for_connection = 1;
 910         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 911 }
 912
 913
 914 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 915                            struct wpa_bss *selected,
 916                            struct wpa_ssid *ssid)
 917 {
 918         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 919                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 920                         "PBC session overlap");
 921 #ifdef CONFIG_P2P
 922                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
 923                         return -1;
 924 #endif /* CONFIG_P2P */
 925
 926 #ifdef CONFIG_WPS
 927                 wpas_wps_cancel(wpa_s);
 928 #endif /* CONFIG_WPS */
 929                 return -1;
 930         }
 931
 932         /*
 933          * Do not trigger new association unless the BSSID has changed or if
 934          * reassociation is requested. If we are in process of associating with
 935          * the selected BSSID, do not trigger new attempt.
 936          */
 937         if (wpa_s->reassociate ||
 938             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 939              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
 940                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
 941               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 942               0))) {
 943                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 944                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 945                         return 0;
 946                 }
 947                 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
 948                         "reassociate: %d  selected: "MACSTR "  bssid: " MACSTR
 949                         "  pending: " MACSTR "  wpa_state: %s",
 950                         wpa_s->reassociate, MAC2STR(selected->bssid),
 951                         MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
 952                         wpa_supplicant_state_txt(wpa_s->wpa_state));
 953                 wpa_supplicant_associate(wpa_s, selected, ssid);
 954         } else {
 955                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
 956                         "selected AP");
 957         }
 958
 959         return 0;
 960 }
 961
 962
 963 static struct wpa_ssid *
 964 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 965 {
 966         int prio;
 967         struct wpa_ssid *ssid;
 968
 969         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 970                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 971                 {
 972                         if (wpas_network_disabled(wpa_s, ssid))
 973                                 continue;
 974                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 975                             ssid->mode == IEEE80211_MODE_AP)
 976                                 return ssid;
 977                 }
 978         }
 979         return NULL;
 980 }
 981
 982
 983 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 984  * on BSS added and BSS changed events */
 985 static void wpa_supplicant_rsn_preauth_scan_results(
 986         struct wpa_supplicant *wpa_s)
 987 {
 988         struct wpa_bss *bss;
 989
 990         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 991                 return;
 992
 993         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 994                 const u8 *ssid, *rsn;
 995
 996                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
 997                 if (ssid == NULL)
 998                         continue;
 999
1000                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1001                 if (rsn == NULL)
1002                         continue;
1003
1004                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1005         }
1006
1007 }
1008
1009
1010 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1011                                        struct wpa_bss *selected,
1012                                        struct wpa_ssid *ssid)
1013 {
1014         struct wpa_bss *current_bss = NULL;
1015         int min_diff;
1016
1017         if (wpa_s->reassociate)
1018                 return 1; /* explicit request to reassociate */
1019         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1020                 return 1; /* we are not associated; continue */
1021         if (wpa_s->current_ssid == NULL)
1022                 return 1; /* unknown current SSID */
1023         if (wpa_s->current_ssid != ssid)
1024                 return 1; /* different network block */
1025
1026         if (wpas_driver_bss_selection(wpa_s))
1027                 return 0; /* Driver-based roaming */
1028
1029         if (wpa_s->current_ssid->ssid)
1030                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1031                                           wpa_s->current_ssid->ssid,
1032                                           wpa_s->current_ssid->ssid_len);
1033         if (!current_bss)
1034                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1035
1036         if (!current_bss)
1037                 return 1; /* current BSS not seen in scan results */
1038
1039         if (current_bss == selected)
1040                 return 0;
1041
1042         if (selected->last_update_idx > current_bss->last_update_idx)
1043                 return 1; /* current BSS not seen in the last scan */
1044
1045 #ifndef CONFIG_NO_ROAMING
1046         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1047         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1048                 MAC2STR(current_bss->bssid), current_bss->level);
1049         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1050                 MAC2STR(selected->bssid), selected->level);
1051
1052         if (wpa_s->current_ssid->bssid_set &&
1053             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1054             0) {
1055                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1056                         "has preferred BSSID");
1057                 return 1;
1058         }
1059
1060         if (current_bss->level < 0 && current_bss->level > selected->level) {
1061                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1062                         "signal level");
1063                 return 0;
1064         }
1065
1066         min_diff = 2;
1067         if (current_bss->level < 0) {
1068                 if (current_bss->level < -85)
1069                         min_diff = 1;
1070                 else if (current_bss->level < -80)
1071                         min_diff = 2;
1072                 else if (current_bss->level < -75)
1073                         min_diff = 3;
1074                 else if (current_bss->level < -70)
1075                         min_diff = 4;
1076                 else
1077                         min_diff = 5;
1078         }
1079         if (abs(current_bss->level - selected->level) < min_diff) {
1080                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1081                         "in signal level");
1082                 return 0;
1083         }
1084
1085         return 1;
1086 #else /* CONFIG_NO_ROAMING */
1087         return 0;
1088 #endif /* CONFIG_NO_ROAMING */
1089 }
1090
1091
1092 /* Return != 0 if no scan results could be fetched or if scan results should not
1093  * be shared with other virtual interfaces. */
1094 #ifdef ANDROID_P2P
1095 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1096                                               union wpa_event_data *data, int suppress_event)
1097 #else
1098 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1099                                               union wpa_event_data *data)
1100 #endif
1101 {
1102         struct wpa_scan_results *scan_res;
1103         int ap = 0;
1104 #ifndef CONFIG_NO_RANDOM_POOL
1105         size_t i, num;
1106 #endif /* CONFIG_NO_RANDOM_POOL */
1107
1108 #ifdef CONFIG_AP
1109         if (wpa_s->ap_iface)
1110                 ap = 1;
1111 #endif /* CONFIG_AP */
1112
1113         wpa_supplicant_notify_scanning(wpa_s, 0);
1114
1115 #ifdef CONFIG_P2P
1116         if (wpa_s->global->p2p_cb_on_scan_complete &&
1117             !wpa_s->global->p2p_disabled &&
1118             wpa_s->global->p2p != NULL && !wpa_s->sta_scan_pending &&
1119             !wpa_s->scan_res_handler) {
1120                 wpa_s->global->p2p_cb_on_scan_complete = 0;
1121                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
1122                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
1123                                 "stopped scan processing");
1124                         wpa_s->sta_scan_pending = 1;
1125                         wpa_supplicant_req_scan(wpa_s, 5, 0);
1126                         return -1;
1127                 }
1128         }
1129         wpa_s->sta_scan_pending = 0;
1130 #endif /* CONFIG_P2P */
1131
1132         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1133                                                    data ? &data->scan_info :
1134                                                    NULL, 1);
1135         if (scan_res == NULL) {
1136                 if (wpa_s->conf->ap_scan == 2 || ap ||
1137                     wpa_s->scan_res_handler == scan_only_handler)
1138                         return -1;
1139                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1140                         "scanning again");
1141                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1142                 return -1;
1143         }
1144
1145 #ifndef CONFIG_NO_RANDOM_POOL
1146         num = scan_res->num;
1147         if (num > 10)
1148                 num = 10;
1149         for (i = 0; i < num; i++) {
1150                 u8 buf[5];
1151                 struct wpa_scan_res *res = scan_res->res[i];
1152                 buf[0] = res->bssid[5];
1153                 buf[1] = res->qual & 0xff;
1154                 buf[2] = res->noise & 0xff;
1155                 buf[3] = res->level & 0xff;
1156                 buf[4] = res->tsf & 0xff;
1157                 random_add_randomness(buf, sizeof(buf));
1158         }
1159 #endif /* CONFIG_NO_RANDOM_POOL */
1160
1161         if (wpa_s->scan_res_handler) {
1162                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1163                                          struct wpa_scan_results *scan_res);
1164
1165                 scan_res_handler = wpa_s->scan_res_handler;
1166                 wpa_s->scan_res_handler = NULL;
1167                 scan_res_handler(wpa_s, scan_res);
1168
1169                 wpa_scan_results_free(scan_res);
1170                 return -2;
1171         }
1172
1173         if (ap) {
1174                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1175 #ifdef CONFIG_AP
1176                 if (wpa_s->ap_iface->scan_cb)
1177                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1178 #endif /* CONFIG_AP */
1179                 wpa_scan_results_free(scan_res);
1180                 return 0;
1181         }
1182 #ifdef ANDROID_P2P
1183         if(!suppress_event)
1184         {
1185                 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
1186                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1187                 wpas_notify_scan_results(wpa_s);
1188         }
1189 #else
1190         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
1191         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1192         wpas_notify_scan_results(wpa_s);
1193 #endif
1194
1195         wpas_notify_scan_done(wpa_s, 1);
1196
1197         if (sme_proc_obss_scan(wpa_s) > 0) {
1198                 wpa_scan_results_free(scan_res);
1199                 return 0;
1200         }
1201
1202         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
1203                 wpa_scan_results_free(scan_res);
1204                 return 0;
1205         }
1206
1207         if (autoscan_notify_scan(wpa_s, scan_res)) {
1208                 wpa_scan_results_free(scan_res);
1209                 return 0;
1210         }
1211
1212         if (wpa_s->disconnected) {
1213                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1214                 wpa_scan_results_free(scan_res);
1215                 return 0;
1216         }
1217
1218         if (!wpas_driver_bss_selection(wpa_s) &&
1219             bgscan_notify_scan(wpa_s, scan_res) == 1) {
1220                 wpa_scan_results_free(scan_res);
1221                 return 0;
1222         }
1223
1224         wpas_wps_update_ap_info(wpa_s, scan_res);
1225
1226         wpa_scan_results_free(scan_res);
1227
1228         return wpas_select_network_from_last_scan(wpa_s);
1229 }
1230
1231
1232 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s)
1233 {
1234         struct wpa_bss *selected;
1235         struct wpa_ssid *ssid = NULL;
1236
1237         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1238
1239         if (selected) {
1240                 int skip;
1241                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1242                 if (skip) {
1243                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1244                         return 0;
1245                 }
1246
1247                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1248                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1249                         return -1;
1250                 }
1251                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1252                 /*
1253                  * Do not notify other virtual radios of scan results since we do not
1254                  * want them to start other associations at the same time.
1255                  */
1256                 return 1;
1257         } else {
1258                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1259                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1260                 if (ssid) {
1261                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1262                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1263                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1264                 } else {
1265                         int timeout_sec = wpa_s->scan_interval;
1266                         int timeout_usec = 0;
1267 #ifdef CONFIG_P2P
1268                         if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1269                                 return 0;
1270
1271                         if (wpa_s->p2p_in_provisioning) {
1272                                 /*
1273                                  * Use shorter wait during P2P Provisioning
1274                                  * state to speed up group formation.
1275                                  */
1276                                 timeout_sec = 0;
1277                                 timeout_usec = 250000;
1278                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1279                                                             timeout_usec);
1280                                 return 0;
1281                         }
1282 #endif /* CONFIG_P2P */
1283 #ifdef CONFIG_INTERWORKING
1284                         if (wpa_s->conf->auto_interworking &&
1285                             wpa_s->conf->interworking &&
1286                             wpa_s->conf->cred) {
1287                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1288                                         "start ANQP fetch since no matching "
1289                                         "networks found");
1290                                 wpa_s->network_select = 1;
1291                                 wpa_s->auto_network_select = 1;
1292                                 interworking_start_fetch_anqp(wpa_s);
1293                                 return 1;
1294                         }
1295 #endif /* CONFIG_INTERWORKING */
1296                         if (wpa_supplicant_req_sched_scan(wpa_s))
1297                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1298                                                             timeout_usec);
1299                 }
1300         }
1301         return 0;
1302 }
1303
1304
1305 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1306                                               union wpa_event_data *data)
1307 {
1308         const char *rn, *rn2;
1309         struct wpa_supplicant *ifs;
1310 #ifdef ANDROID_P2P
1311         if (_wpa_supplicant_event_scan_results(wpa_s, data, 0) != 0) {
1312 #else
1313         if (_wpa_supplicant_event_scan_results(wpa_s, data) != 0) {
1314 #endif
1315                 /*
1316                  * If no scan results could be fetched, then no need to
1317                  * notify those interfaces that did not actually request
1318                  * this scan. Similarly, if scan results started a new operation on this
1319                  * interface, do not notify other interfaces to avoid concurrent
1320                  * operations during a connection attempt.
1321                  */
1322                 return;
1323         }
1324
1325         /*
1326          * Check other interfaces to see if they have the same radio-name. If
1327          * so, they get updated with this same scan info.
1328          */
1329         if (!wpa_s->driver->get_radio_name)
1330                 return;
1331
1332         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1333         if (rn == NULL || rn[0] == '\0')
1334                 return;
1335
1336         wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1337                 "sharing same radio (%s) in event_scan_results", rn);
1338
1339         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1340                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1341                         continue;
1342
1343                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1344                 if (rn2 && os_strcmp(rn, rn2) == 0) {
1345                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1346                                    "sibling", ifs->ifname);
1347 #ifdef ANDROID_P2P
1348                         if ( (ifs->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) || (ifs->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)) {
1349                                 /* Do not update the scan results from STA interface to p2p interfaces */
1350                                 wpa_printf(MSG_DEBUG, "Not Updating scan results on interface %s from "
1351                                            "sibling %s", ifs->ifname, wpa_s->ifname);
1352                                 continue;
1353                         }
1354                         else {
1355                                 /* P2P_FIND will result in too many SCAN_RESULT_EVENTS within
1356                                  * no time. Avoid announcing it to application as it may not
1357                                  * be that useful (since results will be that of only 1,6,11).
1358                                  * over to any other interface as it
1359                                  */
1360                                 if(p2p_search_in_progress(wpa_s->global->p2p))
1361                                         _wpa_supplicant_event_scan_results(ifs, data, 1);
1362                                 else
1363                                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1364                         }
1365 #else
1366                         _wpa_supplicant_event_scan_results(ifs, data);
1367 #endif
1368                 }
1369         }
1370 }
1371
1372 #endif /* CONFIG_NO_SCAN_PROCESSING */
1373
1374
1375 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1376 {
1377 #ifdef CONFIG_NO_SCAN_PROCESSING
1378         return -1;
1379 #else /* CONFIG_NO_SCAN_PROCESSING */
1380         struct os_time now;
1381
1382         if (wpa_s->last_scan_res_used <= 0)
1383                 return -1;
1384
1385         os_get_time(&now);
1386         if (now.sec - wpa_s->last_scan.sec > 5) {
1387                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1388                 return -1;
1389         }
1390
1391         return wpas_select_network_from_last_scan(wpa_s);
1392 #endif /* CONFIG_NO_SCAN_PROCESSING */
1393 }
1394
1395 #ifdef CONFIG_WNM
1396
1397 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1398 {
1399         struct wpa_supplicant *wpa_s = eloop_ctx;
1400
1401         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1402                 return;
1403
1404         if (!wpa_s->no_keep_alive) {
1405                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1406                            MAC2STR(wpa_s->bssid));
1407                 /* TODO: could skip this if normal data traffic has been sent */
1408                 /* TODO: Consider using some more appropriate data frame for
1409                  * this */
1410                 if (wpa_s->l2)
1411                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1412                                        (u8 *) "", 0);
1413         }
1414
1415 #ifdef CONFIG_SME
1416         if (wpa_s->sme.bss_max_idle_period) {
1417                 unsigned int msec;
1418                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1419                 if (msec > 100)
1420                         msec -= 100;
1421                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1422                                        wnm_bss_keep_alive, wpa_s, NULL);
1423         }
1424 #endif /* CONFIG_SME */
1425 }
1426
1427
1428 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1429                                    const u8 *ies, size_t ies_len)
1430 {
1431         struct ieee802_11_elems elems;
1432
1433         if (ies == NULL)
1434                 return;
1435
1436         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1437                 return;
1438
1439 #ifdef CONFIG_SME
1440         if (elems.bss_max_idle_period) {
1441                 unsigned int msec;
1442                 wpa_s->sme.bss_max_idle_period =
1443                         WPA_GET_LE16(elems.bss_max_idle_period);
1444                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1445                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1446                            (elems.bss_max_idle_period[2] & 0x01) ?
1447                            " (protected keep-live required)" : "");
1448                 if (wpa_s->sme.bss_max_idle_period == 0)
1449                         wpa_s->sme.bss_max_idle_period = 1;
1450                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1451                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1452                          /* msec times 1000 */
1453                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1454                         if (msec > 100)
1455                                 msec -= 100;
1456                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1457                                                wnm_bss_keep_alive, wpa_s,
1458                                                NULL);
1459                 }
1460         }
1461 #endif /* CONFIG_SME */
1462 }
1463
1464 #endif /* CONFIG_WNM */
1465
1466
1467 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1468 {
1469 #ifdef CONFIG_WNM
1470         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1471 #endif /* CONFIG_WNM */
1472 }
1473
1474
1475 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1476                                           union wpa_event_data *data)
1477 {
1478         int l, len, found = 0, wpa_found, rsn_found;
1479         const u8 *p;
1480
1481         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1482         if (data->assoc_info.req_ies)
1483                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1484                             data->assoc_info.req_ies_len);
1485         if (data->assoc_info.resp_ies) {
1486                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1487                             data->assoc_info.resp_ies_len);
1488 #ifdef CONFIG_TDLS
1489                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1490                                         data->assoc_info.resp_ies_len);
1491 #endif /* CONFIG_TDLS */
1492 #ifdef CONFIG_WNM
1493                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1494                                        data->assoc_info.resp_ies_len);
1495 #endif /* CONFIG_WNM */
1496         }
1497         if (data->assoc_info.beacon_ies)
1498                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1499                             data->assoc_info.beacon_ies,
1500                             data->assoc_info.beacon_ies_len);
1501         if (data->assoc_info.freq)
1502                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1503                         data->assoc_info.freq);
1504
1505         p = data->assoc_info.req_ies;
1506         l = data->assoc_info.req_ies_len;
1507
1508         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1509         while (p && l >= 2) {
1510                 len = p[1] + 2;
1511                 if (len > l) {
1512                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1513                                     p, l);
1514                         break;
1515                 }
1516                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1517                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1518                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1519                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1520                                 break;
1521                         found = 1;
1522                         wpa_find_assoc_pmkid(wpa_s);
1523                         break;
1524                 }
1525                 l -= len;
1526                 p += len;
1527         }
1528         if (!found && data->assoc_info.req_ies)
1529                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1530
1531 #ifdef CONFIG_IEEE80211R
1532 #ifdef CONFIG_SME
1533         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1534                 u8 bssid[ETH_ALEN];
1535                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1536                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1537                                                  data->assoc_info.resp_ies,
1538                                                  data->assoc_info.resp_ies_len,
1539                                                  bssid) < 0) {
1540                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1541                                 "Reassociation Response failed");
1542                         wpa_supplicant_deauthenticate(
1543                                 wpa_s, WLAN_REASON_INVALID_IE);
1544                         return -1;
1545                 }
1546         }
1547
1548         p = data->assoc_info.resp_ies;
1549         l = data->assoc_info.resp_ies_len;
1550
1551 #ifdef CONFIG_WPS_STRICT
1552         if (p && wpa_s->current_ssid &&
1553             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1554                 struct wpabuf *wps;
1555                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1556                 if (wps == NULL) {
1557                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1558                                 "include WPS IE in (Re)Association Response");
1559                         return -1;
1560                 }
1561
1562                 if (wps_validate_assoc_resp(wps) < 0) {
1563                         wpabuf_free(wps);
1564                         wpa_supplicant_deauthenticate(
1565                                 wpa_s, WLAN_REASON_INVALID_IE);
1566                         return -1;
1567                 }
1568                 wpabuf_free(wps);
1569         }
1570 #endif /* CONFIG_WPS_STRICT */
1571
1572         /* Go through the IEs and make a copy of the MDIE, if present. */
1573         while (p && l >= 2) {
1574                 len = p[1] + 2;
1575                 if (len > l) {
1576                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1577                                     p, l);
1578                         break;
1579                 }
1580                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1581                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1582                         wpa_s->sme.ft_used = 1;
1583                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1584                                   MOBILITY_DOMAIN_ID_LEN);
1585                         break;
1586                 }
1587                 l -= len;
1588                 p += len;
1589         }
1590 #endif /* CONFIG_SME */
1591
1592         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1593                              data->assoc_info.resp_ies_len);
1594 #endif /* CONFIG_IEEE80211R */
1595
1596         /* WPA/RSN IE from Beacon/ProbeResp */
1597         p = data->assoc_info.beacon_ies;
1598         l = data->assoc_info.beacon_ies_len;
1599
1600         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1601          */
1602         wpa_found = rsn_found = 0;
1603         while (p && l >= 2) {
1604                 len = p[1] + 2;
1605                 if (len > l) {
1606                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1607                                     p, l);
1608                         break;
1609                 }
1610                 if (!wpa_found &&
1611                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1612                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1613                         wpa_found = 1;
1614                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1615                 }
1616
1617                 if (!rsn_found &&
1618                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1619                         rsn_found = 1;
1620                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1621                 }
1622
1623                 l -= len;
1624                 p += len;
1625         }
1626
1627         if (!wpa_found && data->assoc_info.beacon_ies)
1628                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1629         if (!rsn_found && data->assoc_info.beacon_ies)
1630                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1631         if (wpa_found || rsn_found)
1632                 wpa_s->ap_ies_from_associnfo = 1;
1633
1634         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1635             wpa_s->assoc_freq != data->assoc_info.freq) {
1636                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1637                            "%u to %u MHz",
1638                            wpa_s->assoc_freq, data->assoc_info.freq);
1639                 wpa_supplicant_update_scan_results(wpa_s);
1640         }
1641
1642         wpa_s->assoc_freq = data->assoc_info.freq;
1643
1644         return 0;
1645 }
1646
1647
1648 static struct wpa_bss * wpa_supplicant_get_new_bss(
1649         struct wpa_supplicant *wpa_s, const u8 *bssid)
1650 {
1651         struct wpa_bss *bss = NULL;
1652         struct wpa_ssid *ssid = wpa_s->current_ssid;
1653
1654         if (ssid->ssid_len > 0)
1655                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
1656         if (!bss)
1657                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1658
1659         return bss;
1660 }
1661
1662
1663 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1664 {
1665         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1666
1667         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1668                 return -1;
1669
1670         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1671                 return 0;
1672
1673         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1674                                         WPA_IE_VENDOR_TYPE);
1675         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1676
1677         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1678                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1679             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1680                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1681                 return -1;
1682
1683         return 0;
1684 }
1685
1686
1687 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1688                                        union wpa_event_data *data)
1689 {
1690         u8 bssid[ETH_ALEN];
1691         int ft_completed;
1692         struct wpa_driver_capa capa;
1693
1694 #ifdef CONFIG_AP
1695         if (wpa_s->ap_iface) {
1696                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1697                                     data->assoc_info.addr,
1698                                     data->assoc_info.req_ies,
1699                                     data->assoc_info.req_ies_len,
1700                                     data->assoc_info.reassoc);
1701                 return;
1702         }
1703 #endif /* CONFIG_AP */
1704
1705         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1706         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1707                 return;
1708
1709         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1710                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1711                 wpa_supplicant_deauthenticate(
1712                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1713                 return;
1714         }
1715
1716         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1717         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1718                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1719                         MACSTR, MAC2STR(bssid));
1720                 random_add_randomness(bssid, ETH_ALEN);
1721                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1722                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1723                 wpas_notify_bssid_changed(wpa_s);
1724
1725                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1726                         wpa_clear_keys(wpa_s, bssid);
1727                 }
1728                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1729                         wpa_supplicant_deauthenticate(
1730                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1731                         return;
1732                 }
1733                 if (wpa_s->current_ssid) {
1734                         struct wpa_bss *bss = NULL;
1735
1736                         bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1737                         if (!bss) {
1738                                 wpa_supplicant_update_scan_results(wpa_s);
1739
1740                                 /* Get the BSS from the new scan results */
1741                                 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1742                         }
1743
1744                         if (bss)
1745                                 wpa_s->current_bss = bss;
1746                 }
1747
1748 #ifdef ANDROID
1749                 if (wpa_s->conf->ap_scan == 1) {
1750 #else
1751                 if (wpa_s->conf->ap_scan == 1 &&
1752                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1753 #endif
1754                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1755                                 wpa_msg(wpa_s, MSG_WARNING,
1756                                         "WPA/RSN IEs not updated");
1757                 }
1758         }
1759
1760 #ifdef CONFIG_SME
1761         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1762         wpa_s->sme.prev_bssid_set = 1;
1763 #endif /* CONFIG_SME */
1764
1765         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1766         if (wpa_s->current_ssid) {
1767                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1768                  * initialized before association, but for other modes,
1769                  * initialize PC/SC here, if the current configuration needs
1770                  * smartcard or SIM/USIM. */
1771                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1772         }
1773         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1774         if (wpa_s->l2)
1775                 l2_packet_notify_auth_start(wpa_s->l2);
1776
1777         /*
1778          * Set portEnabled first to FALSE in order to get EAP state machine out
1779          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1780          * state machine may transit to AUTHENTICATING state based on obsolete
1781          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1782          * AUTHENTICATED without ever giving chance to EAP state machine to
1783          * reset the state.
1784          */
1785         if (!ft_completed) {
1786                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1787                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1788         }
1789         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1790                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1791         /* 802.1X::portControl = Auto */
1792         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1793         wpa_s->eapol_received = 0;
1794         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1795             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1796             (wpa_s->current_ssid &&
1797              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1798                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1799                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1800         } else if (!ft_completed) {
1801                 /* Timeout for receiving the first EAPOL packet */
1802                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1803         }
1804         wpa_supplicant_cancel_scan(wpa_s);
1805
1806         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1807             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1808                 /*
1809                  * We are done; the driver will take care of RSN 4-way
1810                  * handshake.
1811                  */
1812                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1813                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1814                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1815                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1816         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1817                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1818                 /*
1819                  * The driver will take care of RSN 4-way handshake, so we need
1820                  * to allow EAPOL supplicant to complete its work without
1821                  * waiting for WPA supplicant.
1822                  */
1823                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1824         } else if (ft_completed) {
1825                 /*
1826                  * FT protocol completed - make sure EAPOL state machine ends
1827                  * up in authenticated.
1828                  */
1829                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1830                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1831                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1832                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1833         }
1834
1835         wpa_s->last_eapol_matches_bssid = 0;
1836
1837         if (wpa_s->pending_eapol_rx) {
1838                 struct os_time now, age;
1839                 os_get_time(&now);
1840                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1841                 if (age.sec == 0 && age.usec < 100000 &&
1842                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1843                     0) {
1844                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1845                                 "frame that was received just before "
1846                                 "association notification");
1847                         wpa_supplicant_rx_eapol(
1848                                 wpa_s, wpa_s->pending_eapol_rx_src,
1849                                 wpabuf_head(wpa_s->pending_eapol_rx),
1850                                 wpabuf_len(wpa_s->pending_eapol_rx));
1851                 }
1852                 wpabuf_free(wpa_s->pending_eapol_rx);
1853                 wpa_s->pending_eapol_rx = NULL;
1854         }
1855
1856         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1857              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1858             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1859             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1860                 /* Set static WEP keys again */
1861                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1862         }
1863
1864 #ifdef CONFIG_IBSS_RSN
1865         if (wpa_s->current_ssid &&
1866             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1867             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1868             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1869             wpa_s->ibss_rsn == NULL) {
1870                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1871                 if (!wpa_s->ibss_rsn) {
1872                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1873                         wpa_supplicant_deauthenticate(
1874                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1875                         return;
1876                 }
1877
1878                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1879         }
1880 #endif /* CONFIG_IBSS_RSN */
1881
1882         wpas_wps_notify_assoc(wpa_s, bssid);
1883 }
1884
1885
1886 static int disconnect_reason_recoverable(u16 reason_code)
1887 {
1888         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
1889                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
1890                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
1891 }
1892
1893
1894 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1895                                           u16 reason_code,
1896                                           int locally_generated)
1897 {
1898         const u8 *bssid;
1899
1900         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1901                 /*
1902                  * At least Host AP driver and a Prism3 card seemed to be
1903                  * generating streams of disconnected events when configuring
1904                  * IBSS for WPA-None. Ignore them for now.
1905                  */
1906                 return;
1907         }
1908
1909         bssid = wpa_s->bssid;
1910         if (is_zero_ether_addr(bssid))
1911                 bssid = wpa_s->pending_bssid;
1912
1913         if (!is_zero_ether_addr(bssid) ||
1914             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1915                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1916                         " reason=%d%s",
1917                         MAC2STR(bssid), reason_code,
1918                         locally_generated ? " locally_generated=1" : "");
1919         }
1920 }
1921
1922
1923 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
1924                                  int locally_generated)
1925 {
1926         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
1927             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
1928                 return 0; /* Not in 4-way handshake with PSK */
1929
1930         /*
1931          * It looks like connection was lost while trying to go through PSK
1932          * 4-way handshake. Filter out known disconnection cases that are caused
1933          * by something else than PSK mismatch to avoid confusing reports.
1934          */
1935
1936         if (locally_generated) {
1937                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
1938                         return 0;
1939         }
1940
1941         return 1;
1942 }
1943
1944
1945 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
1946                                                  u16 reason_code,
1947                                                  int locally_generated)
1948 {
1949         const u8 *bssid;
1950         int authenticating;
1951         u8 prev_pending_bssid[ETH_ALEN];
1952         struct wpa_bss *fast_reconnect = NULL;
1953         struct wpa_ssid *fast_reconnect_ssid = NULL;
1954         struct wpa_ssid *last_ssid;
1955
1956         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1957         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1958
1959         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1960                 /*
1961                  * At least Host AP driver and a Prism3 card seemed to be
1962                  * generating streams of disconnected events when configuring
1963                  * IBSS for WPA-None. Ignore them for now.
1964                  */
1965                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1966                         "IBSS/WPA-None mode");
1967                 return;
1968         }
1969
1970         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
1971                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1972                         "pre-shared key may be incorrect");
1973                 wpas_auth_failed(wpa_s);
1974         }
1975         if (!wpa_s->auto_reconnect_disabled ||
1976             wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1977                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
1978                         "reconnect (wps=%d wpa_state=%d)",
1979                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
1980                         wpa_s->wpa_state);
1981                 if (wpa_s->wpa_state == WPA_COMPLETED &&
1982                     wpa_s->current_ssid &&
1983                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
1984                     !locally_generated &&
1985                     disconnect_reason_recoverable(reason_code)) {
1986                         /*
1987                          * It looks like the AP has dropped association with
1988                          * us, but could allow us to get back in. Try to
1989                          * reconnect to the same BSS without full scan to save
1990                          * time for some common cases.
1991                          */
1992                         fast_reconnect = wpa_s->current_bss;
1993                         fast_reconnect_ssid = wpa_s->current_ssid;
1994                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1995 #ifdef ANDROID
1996                         wpa_supplicant_req_scan(wpa_s, 0, 500000);
1997 #else
1998                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1999 #endif
2000                 else
2001                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2002                                 "immediate scan");
2003         } else {
2004                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2005                         "try to re-connect");
2006                 wpa_s->reassociate = 0;
2007                 wpa_s->disconnected = 1;
2008                 wpa_supplicant_cancel_sched_scan(wpa_s);
2009         }
2010         bssid = wpa_s->bssid;
2011         if (is_zero_ether_addr(bssid))
2012                 bssid = wpa_s->pending_bssid;
2013         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2014                 wpas_connection_failed(wpa_s, bssid);
2015         wpa_sm_notify_disassoc(wpa_s->wpa);
2016         if (locally_generated)
2017                 wpa_s->disconnect_reason = -reason_code;
2018         else
2019                 wpa_s->disconnect_reason = reason_code;
2020         wpas_notify_disconnect_reason(wpa_s);
2021         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2022                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2023                 wpa_s->keys_cleared = 0;
2024                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2025         }
2026         last_ssid = wpa_s->current_ssid;
2027         wpa_supplicant_mark_disassoc(wpa_s);
2028
2029         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2030                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2031                 wpa_s->current_ssid = last_ssid;
2032         }
2033
2034         if (fast_reconnect) {
2035 #ifndef CONFIG_NO_SCAN_PROCESSING
2036                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2037                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2038                                            fast_reconnect_ssid) < 0) {
2039                         /* Recover through full scan */
2040                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2041                 }
2042 #endif /* CONFIG_NO_SCAN_PROCESSING */
2043         }
2044 }
2045
2046
2047 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2048 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2049 {
2050         struct wpa_supplicant *wpa_s = eloop_ctx;
2051
2052         if (!wpa_s->pending_mic_error_report)
2053                 return;
2054
2055         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2056         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2057         wpa_s->pending_mic_error_report = 0;
2058 }
2059 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2060
2061
2062 static void
2063 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2064                                          union wpa_event_data *data)
2065 {
2066         int pairwise;
2067         struct os_time t;
2068
2069         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2070         pairwise = (data && data->michael_mic_failure.unicast);
2071         os_get_time(&t);
2072         if ((wpa_s->last_michael_mic_error &&
2073              t.sec - wpa_s->last_michael_mic_error <= 60) ||
2074             wpa_s->pending_mic_error_report) {
2075                 if (wpa_s->pending_mic_error_report) {
2076                         /*
2077                          * Send the pending MIC error report immediately since
2078                          * we are going to start countermeasures and AP better
2079                          * do the same.
2080                          */
2081                         wpa_sm_key_request(wpa_s->wpa, 1,
2082                                            wpa_s->pending_mic_error_pairwise);
2083                 }
2084
2085                 /* Send the new MIC error report immediately since we are going
2086                  * to start countermeasures and AP better do the same.
2087                  */
2088                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2089
2090                 /* initialize countermeasures */
2091                 wpa_s->countermeasures = 1;
2092
2093                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2094
2095                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2096
2097                 /*
2098                  * Need to wait for completion of request frame. We do not get
2099                  * any callback for the message completion, so just wait a
2100                  * short while and hope for the best. */
2101                 os_sleep(0, 10000);
2102
2103                 wpa_drv_set_countermeasures(wpa_s, 1);
2104                 wpa_supplicant_deauthenticate(wpa_s,
2105                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2106                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2107                                      wpa_s, NULL);
2108                 eloop_register_timeout(60, 0,
2109                                        wpa_supplicant_stop_countermeasures,
2110                                        wpa_s, NULL);
2111                 /* TODO: mark the AP rejected for 60 second. STA is
2112                  * allowed to associate with another AP.. */
2113         } else {
2114 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2115                 if (wpa_s->mic_errors_seen) {
2116                         /*
2117                          * Reduce the effectiveness of Michael MIC error
2118                          * reports as a means for attacking against TKIP if
2119                          * more than one MIC failure is noticed with the same
2120                          * PTK. We delay the transmission of the reports by a
2121                          * random time between 0 and 60 seconds in order to
2122                          * force the attacker wait 60 seconds before getting
2123                          * the information on whether a frame resulted in a MIC
2124                          * failure.
2125                          */
2126                         u8 rval[4];
2127                         int sec;
2128
2129                         if (os_get_random(rval, sizeof(rval)) < 0)
2130                                 sec = os_random() % 60;
2131                         else
2132                                 sec = WPA_GET_BE32(rval) % 60;
2133                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2134                                 "report %d seconds", sec);
2135                         wpa_s->pending_mic_error_report = 1;
2136                         wpa_s->pending_mic_error_pairwise = pairwise;
2137                         eloop_cancel_timeout(
2138                                 wpa_supplicant_delayed_mic_error_report,
2139                                 wpa_s, NULL);
2140                         eloop_register_timeout(
2141                                 sec, os_random() % 1000000,
2142                                 wpa_supplicant_delayed_mic_error_report,
2143                                 wpa_s, NULL);
2144                 } else {
2145                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2146                 }
2147 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2148                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2149 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2150         }
2151         wpa_s->last_michael_mic_error = t.sec;
2152         wpa_s->mic_errors_seen++;
2153 }
2154
2155
2156 #ifdef CONFIG_TERMINATE_ONLASTIF
2157 static int any_interfaces(struct wpa_supplicant *head)
2158 {
2159         struct wpa_supplicant *wpa_s;
2160
2161         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2162                 if (!wpa_s->interface_removed)
2163                         return 1;
2164         return 0;
2165 }
2166 #endif /* CONFIG_TERMINATE_ONLASTIF */
2167
2168
2169 static void
2170 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2171                                       union wpa_event_data *data)
2172 {
2173         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2174                 return;
2175
2176         switch (data->interface_status.ievent) {
2177         case EVENT_INTERFACE_ADDED:
2178                 if (!wpa_s->interface_removed)
2179                         break;
2180                 wpa_s->interface_removed = 0;
2181                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2182                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2183                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2184                                 "driver after interface was added");
2185                 }
2186                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2187                 break;
2188         case EVENT_INTERFACE_REMOVED:
2189                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2190                 wpa_s->interface_removed = 1;
2191                 wpa_supplicant_mark_disassoc(wpa_s);
2192                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2193                 l2_packet_deinit(wpa_s->l2);
2194                 wpa_s->l2 = NULL;
2195 #ifdef CONFIG_IBSS_RSN
2196                 ibss_rsn_deinit(wpa_s->ibss_rsn);
2197                 wpa_s->ibss_rsn = NULL;
2198 #endif /* CONFIG_IBSS_RSN */
2199 #ifdef CONFIG_TERMINATE_ONLASTIF
2200                 /* check if last interface */
2201                 if (!any_interfaces(wpa_s->global->ifaces))
2202                         eloop_terminate();
2203 #endif /* CONFIG_TERMINATE_ONLASTIF */
2204                 break;
2205         }
2206 }
2207
2208
2209 #ifdef CONFIG_PEERKEY
2210 static void
2211 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2212                               union wpa_event_data *data)
2213 {
2214         if (data == NULL)
2215                 return;
2216         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2217 }
2218 #endif /* CONFIG_PEERKEY */
2219
2220
2221 #ifdef CONFIG_TDLS
2222 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2223                                       union wpa_event_data *data)
2224 {
2225         if (data == NULL)
2226                 return;
2227         switch (data->tdls.oper) {
2228         case TDLS_REQUEST_SETUP:
2229                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2230                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2231                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2232                 else
2233                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2234                 break;
2235         case TDLS_REQUEST_TEARDOWN:
2236                 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2237                                        data->tdls.reason_code);
2238                 break;
2239         }
2240 }
2241 #endif /* CONFIG_TDLS */
2242
2243
2244 #ifdef CONFIG_WNM
2245 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2246                                      union wpa_event_data *data)
2247 {
2248         if (data == NULL)
2249                 return;
2250         switch (data->wnm.oper) {
2251         case WNM_OPER_SLEEP:
2252                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2253                            "(action=%d, intval=%d)",
2254                            data->wnm.sleep_action, data->wnm.sleep_intval);
2255                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2256                                              data->wnm.sleep_intval, NULL);
2257                 break;
2258         }
2259 }
2260 #endif /* CONFIG_WNM */
2261
2262
2263 #ifdef CONFIG_IEEE80211R
2264 static void
2265 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2266                                  union wpa_event_data *data)
2267 {
2268         if (data == NULL)
2269                 return;
2270
2271         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2272                                     data->ft_ies.ies_len,
2273                                     data->ft_ies.ft_action,
2274                                     data->ft_ies.target_ap,
2275                                     data->ft_ies.ric_ies,
2276                                     data->ft_ies.ric_ies_len) < 0) {
2277                 /* TODO: prevent MLME/driver from trying to associate? */
2278         }
2279 }
2280 #endif /* CONFIG_IEEE80211R */
2281
2282
2283 #ifdef CONFIG_IBSS_RSN
2284 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2285                                                 union wpa_event_data *data)
2286 {
2287         struct wpa_ssid *ssid;
2288         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2289                 return;
2290         if (data == NULL)
2291                 return;
2292         ssid = wpa_s->current_ssid;
2293         if (ssid == NULL)
2294                 return;
2295         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2296                 return;
2297
2298         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2299 }
2300 #endif /* CONFIG_IBSS_RSN */
2301
2302
2303 #ifdef CONFIG_IEEE80211R
2304 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2305                          size_t len)
2306 {
2307         const u8 *sta_addr, *target_ap_addr;
2308         u16 status;
2309
2310         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2311         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2312                 return; /* only SME case supported for now */
2313         if (len < 1 + 2 * ETH_ALEN + 2)
2314                 return;
2315         if (data[0] != 2)
2316                 return; /* Only FT Action Response is supported for now */
2317         sta_addr = data + 1;
2318         target_ap_addr = data + 1 + ETH_ALEN;
2319         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2320         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2321                 MACSTR " TargetAP " MACSTR " status %u",
2322                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2323
2324         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2325                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2326                         " in FT Action Response", MAC2STR(sta_addr));
2327                 return;
2328         }
2329
2330         if (status) {
2331                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2332                         "failure (status code %d)", status);
2333                 /* TODO: report error to FT code(?) */
2334                 return;
2335         }
2336
2337         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2338                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2339                                     target_ap_addr, NULL, 0) < 0)
2340                 return;
2341
2342 #ifdef CONFIG_SME
2343         {
2344                 struct wpa_bss *bss;
2345                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2346                 if (bss)
2347                         wpa_s->sme.freq = bss->freq;
2348                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2349                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2350                               WLAN_AUTH_FT);
2351         }
2352 #endif /* CONFIG_SME */
2353 }
2354 #endif /* CONFIG_IEEE80211R */
2355
2356
2357 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2358                                                struct unprot_deauth *e)
2359 {
2360 #ifdef CONFIG_IEEE80211W
2361         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2362                    "dropped: " MACSTR " -> " MACSTR
2363                    " (reason code %u)",
2364                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2365         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2366 #endif /* CONFIG_IEEE80211W */
2367 }
2368
2369
2370 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2371                                                  struct unprot_disassoc *e)
2372 {
2373 #ifdef CONFIG_IEEE80211W
2374         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2375                    "dropped: " MACSTR " -> " MACSTR
2376                    " (reason code %u)",
2377                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2378         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2379 #endif /* CONFIG_IEEE80211W */
2380 }
2381
2382
2383 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2384                           union wpa_event_data *data)
2385 {
2386         struct wpa_supplicant *wpa_s = ctx;
2387         u16 reason_code = 0;
2388         int locally_generated = 0;
2389
2390         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2391             event != EVENT_INTERFACE_ENABLED &&
2392             event != EVENT_INTERFACE_STATUS &&
2393             event != EVENT_SCHED_SCAN_STOPPED) {
2394                 wpa_dbg(wpa_s, MSG_DEBUG,
2395                         "Ignore event %s (%d) while interface is disabled",
2396                         event_to_string(event), event);
2397                 return;
2398         }
2399
2400 #ifndef CONFIG_NO_STDOUT_DEBUG
2401 {
2402         int level = MSG_DEBUG;
2403
2404         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2405                 const struct ieee80211_hdr *hdr;
2406                 u16 fc;
2407                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2408                 fc = le_to_host16(hdr->frame_control);
2409                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2410                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2411                         level = MSG_EXCESSIVE;
2412         }
2413
2414         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2415                 event_to_string(event), event);
2416 }
2417 #endif /* CONFIG_NO_STDOUT_DEBUG */
2418
2419         switch (event) {
2420         case EVENT_AUTH:
2421                 sme_event_auth(wpa_s, data);
2422                 break;
2423         case EVENT_ASSOC:
2424                 wpa_supplicant_event_assoc(wpa_s, data);
2425                 break;
2426         case EVENT_DISASSOC:
2427                 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2428                 if (data) {
2429                         wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2430                                 data->disassoc_info.reason_code,
2431                                 data->disassoc_info.locally_generated ?
2432                                 " (locally generated)" : "");
2433                         if (data->disassoc_info.addr)
2434                                 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2435                                         MAC2STR(data->disassoc_info.addr));
2436                 }
2437 #ifdef CONFIG_AP
2438                 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
2439                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2440                                                data->disassoc_info.addr);
2441                         break;
2442                 }
2443                 if (wpa_s->ap_iface) {
2444                         wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in "
2445                                 "AP mode");
2446                         break;
2447                 }
2448 #endif /* CONFIG_AP */
2449                 if (data) {
2450                         reason_code = data->disassoc_info.reason_code;
2451                         locally_generated =
2452                                 data->disassoc_info.locally_generated;
2453                         wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2454                                     data->disassoc_info.ie,
2455                                     data->disassoc_info.ie_len);
2456 #ifdef CONFIG_P2P
2457                         wpas_p2p_disassoc_notif(
2458                                 wpa_s, data->disassoc_info.addr, reason_code,
2459                                 data->disassoc_info.ie,
2460                                 data->disassoc_info.ie_len,
2461                                 locally_generated);
2462 #endif /* CONFIG_P2P */
2463                 }
2464                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2465                         sme_event_disassoc(wpa_s, data);
2466                 /* fall through */
2467         case EVENT_DEAUTH:
2468                 if (event == EVENT_DEAUTH) {
2469                         wpa_dbg(wpa_s, MSG_DEBUG,
2470                                 "Deauthentication notification");
2471                         if (data) {
2472                                 reason_code = data->deauth_info.reason_code;
2473                                 locally_generated =
2474                                         data->deauth_info.locally_generated;
2475                                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2476                                         data->deauth_info.reason_code,
2477                                         data->deauth_info.locally_generated ?
2478                                         " (locally generated)" : "");
2479                                 if (data->deauth_info.addr) {
2480                                         wpa_dbg(wpa_s, MSG_DEBUG, " * address "
2481                                                 MACSTR,
2482                                                 MAC2STR(data->deauth_info.
2483                                                         addr));
2484                                 }
2485                                 wpa_hexdump(MSG_DEBUG,
2486                                             "Deauthentication frame IE(s)",
2487                                             data->deauth_info.ie,
2488                                             data->deauth_info.ie_len);
2489                         }
2490                 }
2491 #ifdef CONFIG_AP
2492                 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
2493                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2494                                                data->deauth_info.addr);
2495                         break;
2496                 }
2497                 if (wpa_s->ap_iface) {
2498                         wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in "
2499                                 "AP mode");
2500                         break;
2501                 }
2502 #endif /* CONFIG_AP */
2503                 wpa_supplicant_event_disassoc(wpa_s, reason_code,
2504                                               locally_generated);
2505                 if (reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2506                     ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2507                       (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2508                      eapol_sm_failed(wpa_s->eapol)))
2509                         wpas_auth_failed(wpa_s);
2510 #ifdef CONFIG_P2P
2511                 if (event == EVENT_DEAUTH && data) {
2512                         if (wpas_p2p_deauth_notif(wpa_s,
2513                                                   data->deauth_info.addr,
2514                                                   reason_code,
2515                                                   data->deauth_info.ie,
2516                                                   data->deauth_info.ie_len,
2517                                                   locally_generated) > 0) {
2518                                 /*
2519                                  * The interface was removed, so cannot
2520                                  * continue processing any additional
2521                                  * operations after this.
2522                                  */
2523                                 break;
2524                         }
2525                 }
2526 #endif /* CONFIG_P2P */
2527                 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2528                                                      locally_generated);
2529                 break;
2530         case EVENT_MICHAEL_MIC_FAILURE:
2531                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2532                 break;
2533 #ifndef CONFIG_NO_SCAN_PROCESSING
2534         case EVENT_SCAN_RESULTS:
2535                 wpa_supplicant_event_scan_results(wpa_s, data);
2536 #ifdef CONFIG_P2P
2537         if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
2538             wpa_s->global->p2p != NULL &&
2539             wpa_s->wpa_state != WPA_AUTHENTICATING &&
2540             wpa_s->wpa_state != WPA_ASSOCIATING) {
2541                 wpa_s->global->p2p_cb_on_scan_complete = 0;
2542                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
2543                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
2544                                 "continued after scan result processing");
2545                 }
2546         }
2547 #endif /* CONFIG_P2P */
2548                 break;
2549 #endif /* CONFIG_NO_SCAN_PROCESSING */
2550         case EVENT_ASSOCINFO:
2551                 wpa_supplicant_event_associnfo(wpa_s, data);
2552                 break;
2553         case EVENT_INTERFACE_STATUS:
2554                 wpa_supplicant_event_interface_status(wpa_s, data);
2555                 break;
2556         case EVENT_PMKID_CANDIDATE:
2557                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2558                 break;
2559 #ifdef CONFIG_PEERKEY
2560         case EVENT_STKSTART:
2561                 wpa_supplicant_event_stkstart(wpa_s, data);
2562                 break;
2563 #endif /* CONFIG_PEERKEY */
2564 #ifdef CONFIG_TDLS
2565         case EVENT_TDLS:
2566                 wpa_supplicant_event_tdls(wpa_s, data);
2567                 break;
2568 #endif /* CONFIG_TDLS */
2569 #ifdef CONFIG_WNM
2570         case EVENT_WNM:
2571                 wpa_supplicant_event_wnm(wpa_s, data);
2572                 break;
2573 #endif /* CONFIG_WNM */
2574 #ifdef CONFIG_IEEE80211R
2575         case EVENT_FT_RESPONSE:
2576                 wpa_supplicant_event_ft_response(wpa_s, data);
2577                 break;
2578 #endif /* CONFIG_IEEE80211R */
2579 #ifdef CONFIG_IBSS_RSN
2580         case EVENT_IBSS_RSN_START:
2581                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2582                 break;
2583 #endif /* CONFIG_IBSS_RSN */
2584         case EVENT_ASSOC_REJECT:
2585                 if (data->assoc_reject.bssid)
2586                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2587                                 "bssid=" MACSTR " status_code=%u",
2588                                 MAC2STR(data->assoc_reject.bssid),
2589                                 data->assoc_reject.status_code);
2590                 else
2591                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2592                                 "status_code=%u",
2593                                 data->assoc_reject.status_code);
2594                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2595                         sme_event_assoc_reject(wpa_s, data);
2596                 else {
2597 #ifdef ANDROID_P2P
2598                         if(!wpa_s->current_ssid) {
2599                                 wpa_printf(MSG_ERROR, "current_ssid == NULL");
2600                                 break;
2601                         }
2602                         /* If assoc reject is reported by the driver, then avoid
2603                          * waiting for  the authentication timeout. Cancel the
2604                          * authentication timeout and retry the assoc.
2605                          */
2606                         if(wpa_s->current_ssid->assoc_retry++ < 10) {
2607                                 wpa_printf(MSG_ERROR, "Retrying assoc: %d ",
2608                                                                 wpa_s->current_ssid->assoc_retry);
2609
2610                                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2611
2612                                 /* Clear the states */
2613                                 wpa_sm_notify_disassoc(wpa_s->wpa);
2614                                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2615
2616                                 wpa_s->reassociate = 1;
2617                                 if (wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE) {
2618                                         const u8 *bl_bssid = data->assoc_reject.bssid;
2619                                         if (!bl_bssid || is_zero_ether_addr(bl_bssid))
2620                                                 bl_bssid = wpa_s->pending_bssid;
2621                                         wpa_blacklist_add(wpa_s, bl_bssid);
2622                                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2623                                 } else {
2624                                         wpa_supplicant_req_scan(wpa_s, 1, 0);
2625                                 }
2626                         } else if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
2627                                 /* If we ASSOC_REJECT's hits threshold, disable the
2628                                  * network
2629                                  */
2630                                 wpa_printf(MSG_ERROR, "Assoc retry threshold reached. "
2631                                 "Disabling the network");
2632                                 wpa_s->current_ssid->assoc_retry = 0;
2633                                 wpa_supplicant_disable_network(wpa_s, wpa_s->current_ssid);
2634                                 wpas_p2p_group_remove(wpa_s, wpa_s->ifname);
2635                         }
2636 #else
2637                         const u8 *bssid = data->assoc_reject.bssid;
2638                         if (bssid == NULL || is_zero_ether_addr(bssid))
2639                                 bssid = wpa_s->pending_bssid;
2640                         wpas_connection_failed(wpa_s, bssid);
2641                         wpa_supplicant_mark_disassoc(wpa_s);
2642 #endif /* ANDROID_P2P */
2643                 }
2644                 break;
2645         case EVENT_AUTH_TIMED_OUT:
2646                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2647                         sme_event_auth_timed_out(wpa_s, data);
2648                 break;
2649         case EVENT_ASSOC_TIMED_OUT:
2650                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2651                         sme_event_assoc_timed_out(wpa_s, data);
2652                 break;
2653         case EVENT_TX_STATUS:
2654                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2655                         " type=%d stype=%d",
2656                         MAC2STR(data->tx_status.dst),
2657                         data->tx_status.type, data->tx_status.stype);
2658 #ifdef CONFIG_AP
2659                 if (wpa_s->ap_iface == NULL) {
2660 #ifdef CONFIG_OFFCHANNEL
2661                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2662                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2663                                 offchannel_send_action_tx_status(
2664                                         wpa_s, data->tx_status.dst,
2665                                         data->tx_status.data,
2666                                         data->tx_status.data_len,
2667                                         data->tx_status.ack ?
2668                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
2669                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
2670 #endif /* CONFIG_OFFCHANNEL */
2671                         break;
2672                 }
2673 #endif /* CONFIG_AP */
2674 #ifdef CONFIG_OFFCHANNEL
2675                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2676                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2677                 /*
2678                  * Catch TX status events for Action frames we sent via group
2679                  * interface in GO mode.
2680                  */
2681                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2682                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2683                     os_memcmp(wpa_s->parent->pending_action_dst,
2684                               data->tx_status.dst, ETH_ALEN) == 0) {
2685                         offchannel_send_action_tx_status(
2686                                 wpa_s->parent, data->tx_status.dst,
2687                                 data->tx_status.data,
2688                                 data->tx_status.data_len,
2689                                 data->tx_status.ack ?
2690                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
2691                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
2692                         break;
2693                 }
2694 #endif /* CONFIG_OFFCHANNEL */
2695 #ifdef CONFIG_AP
2696                 switch (data->tx_status.type) {
2697                 case WLAN_FC_TYPE_MGMT:
2698                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2699                                       data->tx_status.data_len,
2700                                       data->tx_status.stype,
2701                                       data->tx_status.ack);
2702                         break;
2703                 case WLAN_FC_TYPE_DATA:
2704                         ap_tx_status(wpa_s, data->tx_status.dst,
2705                                      data->tx_status.data,
2706                                      data->tx_status.data_len,
2707                                      data->tx_status.ack);
2708                         break;
2709                 }
2710 #endif /* CONFIG_AP */
2711                 break;
2712 #ifdef CONFIG_AP
2713         case EVENT_EAPOL_TX_STATUS:
2714                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
2715                                    data->eapol_tx_status.data,
2716                                    data->eapol_tx_status.data_len,
2717                                    data->eapol_tx_status.ack);
2718                 break;
2719         case EVENT_DRIVER_CLIENT_POLL_OK:
2720                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
2721                 break;
2722         case EVENT_RX_FROM_UNKNOWN:
2723                 if (wpa_s->ap_iface == NULL)
2724                         break;
2725                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
2726                                        data->rx_from_unknown.wds);
2727                 break;
2728         case EVENT_CH_SWITCH:
2729                 if (!data)
2730                         break;
2731                 if (!wpa_s->ap_iface) {
2732                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
2733                                 "event in non-AP mode");
2734                         break;
2735                 }
2736
2737 #ifdef CONFIG_AP
2738                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
2739                                   data->ch_switch.ht_enabled,
2740                                   data->ch_switch.ch_offset);
2741 #endif /* CONFIG_AP */
2742                 break;
2743         case EVENT_RX_MGMT: {
2744                 u16 fc, stype;
2745                 const struct ieee80211_mgmt *mgmt;
2746
2747                 mgmt = (const struct ieee80211_mgmt *)
2748                         data->rx_mgmt.frame;
2749                 fc = le_to_host16(mgmt->frame_control);
2750                 stype = WLAN_FC_GET_STYPE(fc);
2751
2752                 if (wpa_s->ap_iface == NULL) {
2753 #ifdef CONFIG_P2P
2754                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2755                             data->rx_mgmt.frame_len > 24) {
2756                                 const u8 *src = mgmt->sa;
2757                                 const u8 *ie = mgmt->u.probe_req.variable;
2758                                 size_t ie_len = data->rx_mgmt.frame_len -
2759                                         (mgmt->u.probe_req.variable -
2760                                          data->rx_mgmt.frame);
2761                                 wpas_p2p_probe_req_rx(
2762                                         wpa_s, src, mgmt->da,
2763                                         mgmt->bssid, ie, ie_len,
2764                                         data->rx_mgmt.ssi_signal);
2765                                 break;
2766                         }
2767 #endif /* CONFIG_P2P */
2768                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2769                                 "management frame in non-AP mode");
2770                         break;
2771                 }
2772
2773                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2774                     data->rx_mgmt.frame_len > 24) {
2775                         const u8 *ie = mgmt->u.probe_req.variable;
2776                         size_t ie_len = data->rx_mgmt.frame_len -
2777                                 (mgmt->u.probe_req.variable -
2778                                  data->rx_mgmt.frame);
2779
2780                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
2781                                          mgmt->bssid, ie, ie_len,
2782                                          data->rx_mgmt.ssi_signal);
2783                 }
2784
2785                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2786                 break;
2787                 }
2788 #endif /* CONFIG_AP */
2789         case EVENT_RX_ACTION:
2790                 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2791                         " Category=%u DataLen=%d freq=%d MHz",
2792                         MAC2STR(data->rx_action.sa),
2793                         data->rx_action.category, (int) data->rx_action.len,
2794                         data->rx_action.freq);
2795 #ifdef CONFIG_IEEE80211R
2796                 if (data->rx_action.category == WLAN_ACTION_FT) {
2797                         ft_rx_action(wpa_s, data->rx_action.data,
2798                                      data->rx_action.len);
2799                         break;
2800                 }
2801 #endif /* CONFIG_IEEE80211R */
2802 #ifdef CONFIG_IEEE80211W
2803 #ifdef CONFIG_SME
2804                 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2805                         sme_sa_query_rx(wpa_s, data->rx_action.sa,
2806                                         data->rx_action.data,
2807                                         data->rx_action.len);
2808                         break;
2809                 }
2810 #endif /* CONFIG_SME */
2811 #endif /* CONFIG_IEEE80211W */
2812 #ifdef CONFIG_WNM
2813                 if (data->rx_action.category == WLAN_ACTION_WNM) {
2814                         ieee802_11_rx_wnm_action(wpa_s, &data->rx_action);
2815                         break;
2816                 }
2817 #endif /* CONFIG_WNM */
2818 #ifdef CONFIG_GAS
2819                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2820                     gas_query_rx(wpa_s->gas, data->rx_action.da,
2821                                  data->rx_action.sa, data->rx_action.bssid,
2822                                  data->rx_action.data, data->rx_action.len,
2823                                  data->rx_action.freq) == 0)
2824                         break;
2825 #endif /* CONFIG_GAS */
2826 #ifdef CONFIG_TDLS
2827                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2828                     data->rx_action.len >= 4 &&
2829                     data->rx_action.data[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2830                         wpa_dbg(wpa_s, MSG_DEBUG, "TDLS: Received Discovery "
2831                                 "Response from " MACSTR,
2832                                 MAC2STR(data->rx_action.sa));
2833                         break;
2834                 }
2835 #endif /* CONFIG_TDLS */
2836 #ifdef CONFIG_P2P
2837                 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2838                                    data->rx_action.sa,
2839                                    data->rx_action.bssid,
2840                                    data->rx_action.category,
2841                                    data->rx_action.data,
2842                                    data->rx_action.len, data->rx_action.freq);
2843 #endif /* CONFIG_P2P */
2844                 break;
2845         case EVENT_RX_PROBE_REQ:
2846                 if (data->rx_probe_req.sa == NULL ||
2847                     data->rx_probe_req.ie == NULL)
2848                         break;
2849 #ifdef CONFIG_AP
2850                 if (wpa_s->ap_iface) {
2851                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2852                                              data->rx_probe_req.sa,
2853                                              data->rx_probe_req.da,
2854                                              data->rx_probe_req.bssid,
2855                                              data->rx_probe_req.ie,
2856                                              data->rx_probe_req.ie_len,
2857                                              data->rx_probe_req.ssi_signal);
2858                         break;
2859                 }
2860 #endif /* CONFIG_AP */
2861 #ifdef CONFIG_P2P
2862                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2863                                       data->rx_probe_req.da,
2864                                       data->rx_probe_req.bssid,
2865                                       data->rx_probe_req.ie,
2866                                       data->rx_probe_req.ie_len,
2867                                       data->rx_probe_req.ssi_signal);
2868 #endif /* CONFIG_P2P */
2869                 break;
2870         case EVENT_REMAIN_ON_CHANNEL:
2871 #ifdef CONFIG_OFFCHANNEL
2872                 offchannel_remain_on_channel_cb(
2873                         wpa_s, data->remain_on_channel.freq,
2874                         data->remain_on_channel.duration);
2875 #endif /* CONFIG_OFFCHANNEL */
2876 #ifdef CONFIG_P2P
2877                 wpas_p2p_remain_on_channel_cb(
2878                         wpa_s, data->remain_on_channel.freq,
2879                         data->remain_on_channel.duration);
2880 #endif /* CONFIG_P2P */
2881                 break;
2882         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2883 #ifdef CONFIG_OFFCHANNEL
2884                 offchannel_cancel_remain_on_channel_cb(
2885                         wpa_s, data->remain_on_channel.freq);
2886 #endif /* CONFIG_OFFCHANNEL */
2887 #ifdef CONFIG_P2P
2888                 wpas_p2p_cancel_remain_on_channel_cb(
2889                         wpa_s, data->remain_on_channel.freq);
2890 #endif /* CONFIG_P2P */
2891                 break;
2892 #ifdef CONFIG_P2P
2893         case EVENT_P2P_DEV_FOUND: {
2894                 struct p2p_peer_info peer_info;
2895
2896                 os_memset(&peer_info, 0, sizeof(peer_info));
2897                 if (data->p2p_dev_found.dev_addr)
2898                         os_memcpy(peer_info.p2p_device_addr,
2899                                   data->p2p_dev_found.dev_addr, ETH_ALEN);
2900                 if (data->p2p_dev_found.pri_dev_type)
2901                         os_memcpy(peer_info.pri_dev_type,
2902                                   data->p2p_dev_found.pri_dev_type,
2903                                   sizeof(peer_info.pri_dev_type));
2904                 if (data->p2p_dev_found.dev_name)
2905                         os_strlcpy(peer_info.device_name,
2906                                    data->p2p_dev_found.dev_name,
2907                                    sizeof(peer_info.device_name));
2908                 peer_info.config_methods = data->p2p_dev_found.config_methods;
2909                 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2910                 peer_info.group_capab = data->p2p_dev_found.group_capab;
2911
2912                 /*
2913                  * FIX: new_device=1 is not necessarily correct. We should
2914                  * maintain a P2P peer database in wpa_supplicant and update
2915                  * this information based on whether the peer is truly new.
2916                  */
2917                 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2918                 break;
2919                 }
2920         case EVENT_P2P_GO_NEG_REQ_RX:
2921                 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2922                                    data->p2p_go_neg_req_rx.dev_passwd_id);
2923                 break;
2924         case EVENT_P2P_GO_NEG_COMPLETED:
2925                 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2926                 break;
2927         case EVENT_P2P_PROV_DISC_REQUEST:
2928                 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2929                                    data->p2p_prov_disc_req.config_methods,
2930                                    data->p2p_prov_disc_req.dev_addr,
2931                                    data->p2p_prov_disc_req.pri_dev_type,
2932                                    data->p2p_prov_disc_req.dev_name,
2933                                    data->p2p_prov_disc_req.supp_config_methods,
2934                                    data->p2p_prov_disc_req.dev_capab,
2935                                    data->p2p_prov_disc_req.group_capab,
2936                                    NULL, 0);
2937                 break;
2938         case EVENT_P2P_PROV_DISC_RESPONSE:
2939                 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2940                                     data->p2p_prov_disc_resp.config_methods);
2941                 break;
2942         case EVENT_P2P_SD_REQUEST:
2943                 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2944                                 data->p2p_sd_req.sa,
2945                                 data->p2p_sd_req.dialog_token,
2946                                 data->p2p_sd_req.update_indic,
2947                                 data->p2p_sd_req.tlvs,
2948                                 data->p2p_sd_req.tlvs_len);
2949                 break;
2950         case EVENT_P2P_SD_RESPONSE:
2951                 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2952                                  data->p2p_sd_resp.update_indic,
2953                                  data->p2p_sd_resp.tlvs,
2954                                  data->p2p_sd_resp.tlvs_len);
2955                 break;
2956 #endif /* CONFIG_P2P */
2957         case EVENT_EAPOL_RX:
2958                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2959                                         data->eapol_rx.data,
2960                                         data->eapol_rx.data_len);
2961                 break;
2962         case EVENT_SIGNAL_CHANGE:
2963                 bgscan_notify_signal_change(
2964                         wpa_s, data->signal_change.above_threshold,
2965                         data->signal_change.current_signal,
2966                         data->signal_change.current_noise,
2967                         data->signal_change.current_txrate);
2968                 break;
2969         case EVENT_INTERFACE_ENABLED:
2970                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2971                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2972                         wpa_supplicant_update_mac_addr(wpa_s);
2973 #ifdef CONFIG_AP
2974                         if (!wpa_s->ap_iface) {
2975                                 wpa_supplicant_set_state(wpa_s,
2976                                                          WPA_DISCONNECTED);
2977                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2978                         } else
2979                                 wpa_supplicant_set_state(wpa_s,
2980                                                          WPA_COMPLETED);
2981 #else /* CONFIG_AP */
2982                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2983                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2984 #endif /* CONFIG_AP */
2985                 }
2986                 break;
2987         case EVENT_INTERFACE_DISABLED:
2988                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2989                 wpa_supplicant_mark_disassoc(wpa_s);
2990                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2991                 break;
2992         case EVENT_CHANNEL_LIST_CHANGED:
2993                 if (wpa_s->drv_priv == NULL)
2994                         break; /* Ignore event during drv initialization */
2995
2996                 free_hw_features(wpa_s);
2997                 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2998                         wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2999
3000 #ifdef CONFIG_P2P
3001                 wpas_p2p_update_channel_list(wpa_s);
3002 #endif /* CONFIG_P2P */
3003                 break;
3004         case EVENT_INTERFACE_UNAVAILABLE:
3005 #ifdef CONFIG_P2P
3006                 wpas_p2p_interface_unavailable(wpa_s);
3007 #endif /* CONFIG_P2P */
3008                 break;
3009         case EVENT_BEST_CHANNEL:
3010                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3011                         "(%d %d %d)",
3012                         data->best_chan.freq_24, data->best_chan.freq_5,
3013                         data->best_chan.freq_overall);
3014                 wpa_s->best_24_freq = data->best_chan.freq_24;
3015                 wpa_s->best_5_freq = data->best_chan.freq_5;
3016                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3017 #ifdef CONFIG_P2P
3018                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3019                                               data->best_chan.freq_5,
3020                                               data->best_chan.freq_overall);
3021 #endif /* CONFIG_P2P */
3022                 break;
3023         case EVENT_UNPROT_DEAUTH:
3024                 wpa_supplicant_event_unprot_deauth(wpa_s,
3025                                                    &data->unprot_deauth);
3026                 break;
3027         case EVENT_UNPROT_DISASSOC:
3028                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3029                                                      &data->unprot_disassoc);
3030                 break;
3031         case EVENT_STATION_LOW_ACK:
3032 #ifdef CONFIG_AP
3033                 if (wpa_s->ap_iface && data)
3034                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3035                                                   data->low_ack.addr);
3036 #endif /* CONFIG_AP */
3037 #ifdef CONFIG_TDLS
3038                 if (data)
3039                         wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
3040 #endif /* CONFIG_TDLS */
3041                 break;
3042         case EVENT_IBSS_PEER_LOST:
3043 #ifdef CONFIG_IBSS_RSN
3044                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3045 #endif /* CONFIG_IBSS_RSN */
3046                 break;
3047         case EVENT_DRIVER_GTK_REKEY:
3048                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3049                               wpa_s->bssid, ETH_ALEN))
3050                         break;
3051                 if (!wpa_s->wpa)
3052                         break;
3053                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3054                                          data->driver_gtk_rekey.replay_ctr);
3055                 break;
3056         case EVENT_SCHED_SCAN_STOPPED:
3057                 wpa_s->sched_scanning = 0;
3058                 wpa_supplicant_notify_scanning(wpa_s, 0);
3059
3060                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3061                         break;
3062
3063                 /*
3064                  * If we timed out, start a new sched scan to continue
3065                  * searching for more SSIDs.
3066                  */
3067                 if (wpa_s->sched_scan_timed_out)
3068                         wpa_supplicant_req_sched_scan(wpa_s);
3069                 break;
3070         case EVENT_WPS_BUTTON_PUSHED:
3071 #ifdef CONFIG_WPS
3072                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3073 #endif /* CONFIG_WPS */
3074                 break;
3075         case EVENT_CONNECT_FAILED_REASON:
3076 #ifdef CONFIG_AP
3077                 if (!wpa_s->ap_iface || !data)
3078                         break;
3079                 hostapd_event_connect_failed_reason(
3080                         wpa_s->ap_iface->bss[0],
3081                         data->connect_failed_reason.addr,
3082                         data->connect_failed_reason.code);
3083 #endif /* CONFIG_AP */
3084                 break;
3085         default:
3086                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3087                 break;
3088         }
3089 }