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 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 858                                              struct wpa_ssid **selected_ssid)
 859 {
 860         struct wpa_bss *selected = NULL;
 861         int prio;
 862
 863         if (wpa_s->last_scan_res == NULL ||
 864             wpa_s->last_scan_res_used == 0)
 865                 return NULL; /* no scan results from last update */
 866
 867         while (selected == NULL) {
 868                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 869                         selected = wpa_supplicant_select_bss(
 870                                 wpa_s, wpa_s->conf->pssid[prio],
 871                                 selected_ssid);
 872                         if (selected)
 873                                 break;
 874                 }
 875
 876                 if (selected == NULL && wpa_s->blacklist &&
 877                     !wpa_s->countermeasures) {
 878                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
 879                                 "blacklist and try again");
 880                         wpa_blacklist_clear(wpa_s);
 881                         wpa_s->blacklist_cleared++;
 882                 } else if (selected == NULL)
 883                         break;
 884         }
 885
 886         return selected;
 887 }
 888
 889
 890 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 891                                         int timeout_sec, int timeout_usec)
 892 {
 893         if (!wpa_supplicant_enabled_networks(wpa_s)) {
 894                 /*
 895                  * No networks are enabled; short-circuit request so
 896                  * we don't wait timeout seconds before transitioning
 897                  * to INACTIVE state.
 898                  */
 899                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
 900                         "since there are no enabled networks");
 901                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 902 #ifdef CONFIG_P2P
 903                 wpa_s->sta_scan_pending = 0;
 904 #endif /* CONFIG_P2P */
 905                 return;
 906         }
 907
 908         wpa_s->scan_for_connection = 1;
 909         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 910 }
 911
 912
 913 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 914                            struct wpa_bss *selected,
 915                            struct wpa_ssid *ssid)
 916 {
 917         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 918                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 919                         "PBC session overlap");
 920 #ifdef CONFIG_P2P
 921                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
 922                         return -1;
 923 #endif /* CONFIG_P2P */
 924
 925 #ifdef CONFIG_WPS
 926                 wpas_wps_cancel(wpa_s);
 927 #endif /* CONFIG_WPS */
 928                 return -1;
 929         }
 930
 931         /*
 932          * Do not trigger new association unless the BSSID has changed or if
 933          * reassociation is requested. If we are in process of associating with
 934          * the selected BSSID, do not trigger new attempt.
 935          */
 936         if (wpa_s->reassociate ||
 937             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 938              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
 939                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
 940               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 941               0))) {
 942                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 943                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 944                         return 0;
 945                 }
 946                 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
 947                         "reassociate: %d  selected: "MACSTR "  bssid: " MACSTR
 948                         "  pending: " MACSTR "  wpa_state: %s",
 949                         wpa_s->reassociate, MAC2STR(selected->bssid),
 950                         MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
 951                         wpa_supplicant_state_txt(wpa_s->wpa_state));
 952                 wpa_supplicant_associate(wpa_s, selected, ssid);
 953         } else {
 954                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
 955                         "selected AP");
 956         }
 957
 958         return 0;
 959 }
 960
 961
 962 static struct wpa_ssid *
 963 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 964 {
 965         int prio;
 966         struct wpa_ssid *ssid;
 967
 968         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 969                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 970                 {
 971                         if (wpas_network_disabled(wpa_s, ssid))
 972                                 continue;
 973                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 974                             ssid->mode == IEEE80211_MODE_AP)
 975                                 return ssid;
 976                 }
 977         }
 978         return NULL;
 979 }
 980
 981
 982 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 983  * on BSS added and BSS changed events */
 984 static void wpa_supplicant_rsn_preauth_scan_results(
 985         struct wpa_supplicant *wpa_s)
 986 {
 987         struct wpa_bss *bss;
 988
 989         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 990                 return;
 991
 992         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 993                 const u8 *ssid, *rsn;
 994
 995                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
 996                 if (ssid == NULL)
 997                         continue;
 998
 999                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1000                 if (rsn == NULL)
1001                         continue;
1002
1003                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1004         }
1005
1006 }
1007
1008
1009 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1010                                        struct wpa_bss *selected,
1011                                        struct wpa_ssid *ssid)
1012 {
1013         struct wpa_bss *current_bss = NULL;
1014         int min_diff;
1015
1016         if (wpa_s->reassociate)
1017                 return 1; /* explicit request to reassociate */
1018         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1019                 return 1; /* we are not associated; continue */
1020         if (wpa_s->current_ssid == NULL)
1021                 return 1; /* unknown current SSID */
1022         if (wpa_s->current_ssid != ssid)
1023                 return 1; /* different network block */
1024
1025         if (wpas_driver_bss_selection(wpa_s))
1026                 return 0; /* Driver-based roaming */
1027
1028         if (wpa_s->current_ssid->ssid)
1029                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1030                                           wpa_s->current_ssid->ssid,
1031                                           wpa_s->current_ssid->ssid_len);
1032         if (!current_bss)
1033                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1034
1035         if (!current_bss)
1036                 return 1; /* current BSS not seen in scan results */
1037
1038         if (current_bss == selected)
1039                 return 0;
1040
1041         if (selected->last_update_idx > current_bss->last_update_idx)
1042                 return 1; /* current BSS not seen in the last scan */
1043
1044 #ifndef CONFIG_NO_ROAMING
1045         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1046         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1047                 MAC2STR(current_bss->bssid), current_bss->level);
1048         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1049                 MAC2STR(selected->bssid), selected->level);
1050
1051         if (wpa_s->current_ssid->bssid_set &&
1052             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1053             0) {
1054                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1055                         "has preferred BSSID");
1056                 return 1;
1057         }
1058
1059         if (current_bss->level < 0 && current_bss->level > selected->level) {
1060                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1061                         "signal level");
1062                 return 0;
1063         }
1064
1065         min_diff = 2;
1066         if (current_bss->level < 0) {
1067                 if (current_bss->level < -85)
1068                         min_diff = 1;
1069                 else if (current_bss->level < -80)
1070                         min_diff = 2;
1071                 else if (current_bss->level < -75)
1072                         min_diff = 3;
1073                 else if (current_bss->level < -70)
1074                         min_diff = 4;
1075                 else
1076                         min_diff = 5;
1077         }
1078         if (abs(current_bss->level - selected->level) < min_diff) {
1079                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1080                         "in signal level");
1081                 return 0;
1082         }
1083
1084         return 1;
1085 #else /* CONFIG_NO_ROAMING */
1086         return 0;
1087 #endif /* CONFIG_NO_ROAMING */
1088 }
1089
1090
1091 /* Return != 0 if no scan results could be fetched or if scan results should not
1092  * be shared with other virtual interfaces. */
1093 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1094                                               union wpa_event_data *data,
1095                                               int own_request)
1096 {
1097         struct wpa_scan_results *scan_res;
1098         int ap = 0;
1099 #ifndef CONFIG_NO_RANDOM_POOL
1100         size_t i, num;
1101 #endif /* CONFIG_NO_RANDOM_POOL */
1102
1103 #ifdef CONFIG_AP
1104         if (wpa_s->ap_iface)
1105                 ap = 1;
1106 #endif /* CONFIG_AP */
1107
1108         wpa_supplicant_notify_scanning(wpa_s, 0);
1109
1110 #ifdef CONFIG_P2P
1111         if (own_request && wpa_s->global->p2p_cb_on_scan_complete &&
1112             !wpa_s->global->p2p_disabled &&
1113             wpa_s->global->p2p != NULL && !wpa_s->sta_scan_pending &&
1114             !wpa_s->scan_res_handler) {
1115                 wpa_s->global->p2p_cb_on_scan_complete = 0;
1116                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
1117                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
1118                                 "stopped scan processing");
1119                         wpa_s->sta_scan_pending = 1;
1120                         wpa_supplicant_req_scan(wpa_s, 5, 0);
1121                         return -1;
1122                 }
1123         }
1124         wpa_s->sta_scan_pending = 0;
1125 #endif /* CONFIG_P2P */
1126
1127         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1128                                                    data ? &data->scan_info :
1129                                                    NULL, 1);
1130         if (scan_res == NULL) {
1131                 if (wpa_s->conf->ap_scan == 2 || ap ||
1132                     wpa_s->scan_res_handler == scan_only_handler)
1133                         return -1;
1134                 if (!own_request)
1135                         return -1;
1136                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1137                         "scanning again");
1138                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1139                 return -1;
1140         }
1141
1142 #ifndef CONFIG_NO_RANDOM_POOL
1143         num = scan_res->num;
1144         if (num > 10)
1145                 num = 10;
1146         for (i = 0; i < num; i++) {
1147                 u8 buf[5];
1148                 struct wpa_scan_res *res = scan_res->res[i];
1149                 buf[0] = res->bssid[5];
1150                 buf[1] = res->qual & 0xff;
1151                 buf[2] = res->noise & 0xff;
1152                 buf[3] = res->level & 0xff;
1153                 buf[4] = res->tsf & 0xff;
1154                 random_add_randomness(buf, sizeof(buf));
1155         }
1156 #endif /* CONFIG_NO_RANDOM_POOL */
1157
1158         if (own_request && wpa_s->scan_res_handler) {
1159                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1160                                          struct wpa_scan_results *scan_res);
1161
1162                 scan_res_handler = wpa_s->scan_res_handler;
1163                 wpa_s->scan_res_handler = NULL;
1164                 scan_res_handler(wpa_s, scan_res);
1165
1166                 wpa_scan_results_free(scan_res);
1167                 return -2;
1168         }
1169
1170         if (ap) {
1171                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1172 #ifdef CONFIG_AP
1173                 if (wpa_s->ap_iface->scan_cb)
1174                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1175 #endif /* CONFIG_AP */
1176                 wpa_scan_results_free(scan_res);
1177                 return 0;
1178         }
1179
1180         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
1181         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1182         wpas_notify_scan_results(wpa_s);
1183
1184         wpas_notify_scan_done(wpa_s, 1);
1185
1186         if (sme_proc_obss_scan(wpa_s) > 0) {
1187                 wpa_scan_results_free(scan_res);
1188                 return 0;
1189         }
1190
1191         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
1192                 wpa_scan_results_free(scan_res);
1193                 return 0;
1194         }
1195
1196         if (autoscan_notify_scan(wpa_s, scan_res)) {
1197                 wpa_scan_results_free(scan_res);
1198                 return 0;
1199         }
1200
1201         if (wpa_s->disconnected) {
1202                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1203                 wpa_scan_results_free(scan_res);
1204                 return 0;
1205         }
1206
1207         if (!wpas_driver_bss_selection(wpa_s) &&
1208             bgscan_notify_scan(wpa_s, scan_res) == 1) {
1209                 wpa_scan_results_free(scan_res);
1210                 return 0;
1211         }
1212
1213         wpas_wps_update_ap_info(wpa_s, scan_res);
1214
1215         wpa_scan_results_free(scan_res);
1216
1217         return wpas_select_network_from_last_scan(wpa_s);
1218 }
1219
1220
1221 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s)
1222 {
1223         struct wpa_bss *selected;
1224         struct wpa_ssid *ssid = NULL;
1225
1226         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1227
1228         if (selected) {
1229                 int skip;
1230                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1231                 if (skip) {
1232                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1233                         return 0;
1234                 }
1235
1236                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1237                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1238                         return -1;
1239                 }
1240                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1241                 /*
1242                  * Do not notify other virtual radios of scan results since we do not
1243                  * want them to start other associations at the same time.
1244                  */
1245                 return 1;
1246         } else {
1247                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1248                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1249                 if (ssid) {
1250                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1251                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1252                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1253                 } else {
1254                         int timeout_sec = wpa_s->scan_interval;
1255                         int timeout_usec = 0;
1256 #ifdef CONFIG_P2P
1257                         if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1258                                 return 0;
1259
1260                         if (wpa_s->p2p_in_provisioning) {
1261                                 /*
1262                                  * Use shorter wait during P2P Provisioning
1263                                  * state to speed up group formation.
1264                                  */
1265                                 timeout_sec = 0;
1266                                 timeout_usec = 250000;
1267                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1268                                                             timeout_usec);
1269                                 return 0;
1270                         }
1271 #endif /* CONFIG_P2P */
1272 #ifdef CONFIG_INTERWORKING
1273                         if (wpa_s->conf->auto_interworking &&
1274                             wpa_s->conf->interworking &&
1275                             wpa_s->conf->cred) {
1276                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1277                                         "start ANQP fetch since no matching "
1278                                         "networks found");
1279                                 wpa_s->network_select = 1;
1280                                 wpa_s->auto_network_select = 1;
1281                                 interworking_start_fetch_anqp(wpa_s);
1282                                 return 1;
1283                         }
1284 #endif /* CONFIG_INTERWORKING */
1285                         if (wpa_supplicant_req_sched_scan(wpa_s))
1286                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1287                                                             timeout_usec);
1288                 }
1289         }
1290         return 0;
1291 }
1292
1293
1294 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1295                                               union wpa_event_data *data)
1296 {
1297         const char *rn, *rn2;
1298         struct wpa_supplicant *ifs;
1299
1300         if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
1301                 /*
1302                  * If no scan results could be fetched, then no need to
1303                  * notify those interfaces that did not actually request
1304                  * this scan. Similarly, if scan results started a new operation on this
1305                  * interface, do not notify other interfaces to avoid concurrent
1306                  * operations during a connection attempt.
1307                  */
1308                 return;
1309         }
1310
1311         /*
1312          * Check other interfaces to see if they have the same radio-name. If
1313          * so, they get updated with this same scan info.
1314          */
1315         if (!wpa_s->driver->get_radio_name)
1316                 return;
1317
1318         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1319         if (rn == NULL || rn[0] == '\0')
1320                 return;
1321
1322         wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1323                 "sharing same radio (%s) in event_scan_results", rn);
1324
1325         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1326                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1327                         continue;
1328
1329                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1330                 if (rn2 && os_strcmp(rn, rn2) == 0) {
1331                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1332                                    "sibling", ifs->ifname);
1333                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1334                 }
1335         }
1336 }
1337
1338 #endif /* CONFIG_NO_SCAN_PROCESSING */
1339
1340
1341 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1342 {
1343 #ifdef CONFIG_NO_SCAN_PROCESSING
1344         return -1;
1345 #else /* CONFIG_NO_SCAN_PROCESSING */
1346         struct os_time now;
1347
1348         if (wpa_s->last_scan_res_used <= 0)
1349                 return -1;
1350
1351         os_get_time(&now);
1352         if (now.sec - wpa_s->last_scan.sec > 5) {
1353                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1354                 return -1;
1355         }
1356
1357         return wpas_select_network_from_last_scan(wpa_s);
1358 #endif /* CONFIG_NO_SCAN_PROCESSING */
1359 }
1360
1361 #ifdef CONFIG_WNM
1362
1363 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1364 {
1365         struct wpa_supplicant *wpa_s = eloop_ctx;
1366
1367         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1368                 return;
1369
1370         if (!wpa_s->no_keep_alive) {
1371                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1372                            MAC2STR(wpa_s->bssid));
1373                 /* TODO: could skip this if normal data traffic has been sent */
1374                 /* TODO: Consider using some more appropriate data frame for
1375                  * this */
1376                 if (wpa_s->l2)
1377                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1378                                        (u8 *) "", 0);
1379         }
1380
1381 #ifdef CONFIG_SME
1382         if (wpa_s->sme.bss_max_idle_period) {
1383                 unsigned int msec;
1384                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1385                 if (msec > 100)
1386                         msec -= 100;
1387                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1388                                        wnm_bss_keep_alive, wpa_s, NULL);
1389         }
1390 #endif /* CONFIG_SME */
1391 }
1392
1393
1394 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1395                                    const u8 *ies, size_t ies_len)
1396 {
1397         struct ieee802_11_elems elems;
1398
1399         if (ies == NULL)
1400                 return;
1401
1402         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1403                 return;
1404
1405 #ifdef CONFIG_SME
1406         if (elems.bss_max_idle_period) {
1407                 unsigned int msec;
1408                 wpa_s->sme.bss_max_idle_period =
1409                         WPA_GET_LE16(elems.bss_max_idle_period);
1410                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1411                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1412                            (elems.bss_max_idle_period[2] & 0x01) ?
1413                            " (protected keep-live required)" : "");
1414                 if (wpa_s->sme.bss_max_idle_period == 0)
1415                         wpa_s->sme.bss_max_idle_period = 1;
1416                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1417                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1418                          /* msec times 1000 */
1419                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1420                         if (msec > 100)
1421                                 msec -= 100;
1422                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1423                                                wnm_bss_keep_alive, wpa_s,
1424                                                NULL);
1425                 }
1426         }
1427 #endif /* CONFIG_SME */
1428 }
1429
1430 #endif /* CONFIG_WNM */
1431
1432
1433 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1434 {
1435 #ifdef CONFIG_WNM
1436         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1437 #endif /* CONFIG_WNM */
1438 }
1439
1440
1441 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1442                                           union wpa_event_data *data)
1443 {
1444         int l, len, found = 0, wpa_found, rsn_found;
1445         const u8 *p;
1446 #ifdef CONFIG_IEEE80211R
1447         u8 bssid[ETH_ALEN];
1448 #endif /* CONFIG_IEEE80211R */
1449
1450         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1451         if (data->assoc_info.req_ies)
1452                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1453                             data->assoc_info.req_ies_len);
1454         if (data->assoc_info.resp_ies) {
1455                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1456                             data->assoc_info.resp_ies_len);
1457 #ifdef CONFIG_TDLS
1458                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1459                                         data->assoc_info.resp_ies_len);
1460 #endif /* CONFIG_TDLS */
1461 #ifdef CONFIG_WNM
1462                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1463                                        data->assoc_info.resp_ies_len);
1464 #endif /* CONFIG_WNM */
1465         }
1466         if (data->assoc_info.beacon_ies)
1467                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1468                             data->assoc_info.beacon_ies,
1469                             data->assoc_info.beacon_ies_len);
1470         if (data->assoc_info.freq)
1471                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1472                         data->assoc_info.freq);
1473
1474         p = data->assoc_info.req_ies;
1475         l = data->assoc_info.req_ies_len;
1476
1477         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1478         while (p && l >= 2) {
1479                 len = p[1] + 2;
1480                 if (len > l) {
1481                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1482                                     p, l);
1483                         break;
1484                 }
1485                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1486                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1487                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1488                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1489                                 break;
1490                         found = 1;
1491                         wpa_find_assoc_pmkid(wpa_s);
1492                         break;
1493                 }
1494                 l -= len;
1495                 p += len;
1496         }
1497         if (!found && data->assoc_info.req_ies)
1498                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1499
1500 #ifdef CONFIG_IEEE80211R
1501 #ifdef CONFIG_SME
1502         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1503                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1504                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1505                                                  data->assoc_info.resp_ies,
1506                                                  data->assoc_info.resp_ies_len,
1507                                                  bssid) < 0) {
1508                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1509                                 "Reassociation Response failed");
1510                         wpa_supplicant_deauthenticate(
1511                                 wpa_s, WLAN_REASON_INVALID_IE);
1512                         return -1;
1513                 }
1514         }
1515
1516         p = data->assoc_info.resp_ies;
1517         l = data->assoc_info.resp_ies_len;
1518
1519 #ifdef CONFIG_WPS_STRICT
1520         if (p && wpa_s->current_ssid &&
1521             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1522                 struct wpabuf *wps;
1523                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1524                 if (wps == NULL) {
1525                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1526                                 "include WPS IE in (Re)Association Response");
1527                         return -1;
1528                 }
1529
1530                 if (wps_validate_assoc_resp(wps) < 0) {
1531                         wpabuf_free(wps);
1532                         wpa_supplicant_deauthenticate(
1533                                 wpa_s, WLAN_REASON_INVALID_IE);
1534                         return -1;
1535                 }
1536                 wpabuf_free(wps);
1537         }
1538 #endif /* CONFIG_WPS_STRICT */
1539
1540         /* Go through the IEs and make a copy of the MDIE, if present. */
1541         while (p && l >= 2) {
1542                 len = p[1] + 2;
1543                 if (len > l) {
1544                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1545                                     p, l);
1546                         break;
1547                 }
1548                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1549                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1550                         wpa_s->sme.ft_used = 1;
1551                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1552                                   MOBILITY_DOMAIN_ID_LEN);
1553                         break;
1554                 }
1555                 l -= len;
1556                 p += len;
1557         }
1558 #endif /* CONFIG_SME */
1559
1560         /* Process FT when SME is in the driver */
1561         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1562             wpa_ft_is_completed(wpa_s->wpa)) {
1563                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1564                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1565                                                  data->assoc_info.resp_ies,
1566                                                  data->assoc_info.resp_ies_len,
1567                                                  bssid) < 0) {
1568                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1569                                 "Reassociation Response failed");
1570                         wpa_supplicant_deauthenticate(
1571                                 wpa_s, WLAN_REASON_INVALID_IE);
1572                         return -1;
1573                 }
1574                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1575         }
1576
1577         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1578                              data->assoc_info.resp_ies_len);
1579 #endif /* CONFIG_IEEE80211R */
1580
1581         /* WPA/RSN IE from Beacon/ProbeResp */
1582         p = data->assoc_info.beacon_ies;
1583         l = data->assoc_info.beacon_ies_len;
1584
1585         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1586          */
1587         wpa_found = rsn_found = 0;
1588         while (p && l >= 2) {
1589                 len = p[1] + 2;
1590                 if (len > l) {
1591                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1592                                     p, l);
1593                         break;
1594                 }
1595                 if (!wpa_found &&
1596                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1597                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1598                         wpa_found = 1;
1599                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1600                 }
1601
1602                 if (!rsn_found &&
1603                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1604                         rsn_found = 1;
1605                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1606                 }
1607
1608                 l -= len;
1609                 p += len;
1610         }
1611
1612         if (!wpa_found && data->assoc_info.beacon_ies)
1613                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1614         if (!rsn_found && data->assoc_info.beacon_ies)
1615                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1616         if (wpa_found || rsn_found)
1617                 wpa_s->ap_ies_from_associnfo = 1;
1618
1619         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1620             wpa_s->assoc_freq != data->assoc_info.freq) {
1621                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1622                            "%u to %u MHz",
1623                            wpa_s->assoc_freq, data->assoc_info.freq);
1624                 wpa_supplicant_update_scan_results(wpa_s);
1625         }
1626
1627         wpa_s->assoc_freq = data->assoc_info.freq;
1628
1629         return 0;
1630 }
1631
1632
1633 static struct wpa_bss * wpa_supplicant_get_new_bss(
1634         struct wpa_supplicant *wpa_s, const u8 *bssid)
1635 {
1636         struct wpa_bss *bss = NULL;
1637         struct wpa_ssid *ssid = wpa_s->current_ssid;
1638
1639         if (ssid->ssid_len > 0)
1640                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
1641         if (!bss)
1642                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1643
1644         return bss;
1645 }
1646
1647
1648 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1649 {
1650         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1651
1652         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1653                 return -1;
1654
1655         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1656                 return 0;
1657
1658         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1659                                         WPA_IE_VENDOR_TYPE);
1660         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1661
1662         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1663                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1664             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1665                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1666                 return -1;
1667
1668         return 0;
1669 }
1670
1671
1672 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1673                                        union wpa_event_data *data)
1674 {
1675         u8 bssid[ETH_ALEN];
1676         int ft_completed;
1677         struct wpa_driver_capa capa;
1678
1679 #ifdef CONFIG_AP
1680         if (wpa_s->ap_iface) {
1681                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1682                                     data->assoc_info.addr,
1683                                     data->assoc_info.req_ies,
1684                                     data->assoc_info.req_ies_len,
1685                                     data->assoc_info.reassoc);
1686                 return;
1687         }
1688 #endif /* CONFIG_AP */
1689
1690         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1691         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1692                 return;
1693
1694         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1695                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1696                 wpa_supplicant_deauthenticate(
1697                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1698                 return;
1699         }
1700
1701         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1702         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1703                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1704                         MACSTR, MAC2STR(bssid));
1705                 random_add_randomness(bssid, ETH_ALEN);
1706                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1707                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1708                 wpas_notify_bssid_changed(wpa_s);
1709
1710                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1711                         wpa_clear_keys(wpa_s, bssid);
1712                 }
1713                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1714                         wpa_supplicant_deauthenticate(
1715                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1716                         return;
1717                 }
1718                 if (wpa_s->current_ssid) {
1719                         struct wpa_bss *bss = NULL;
1720
1721                         bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1722                         if (!bss) {
1723                                 wpa_supplicant_update_scan_results(wpa_s);
1724
1725                                 /* Get the BSS from the new scan results */
1726                                 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1727                         }
1728
1729                         if (bss)
1730                                 wpa_s->current_bss = bss;
1731                 }
1732
1733 #ifdef ANDROID
1734                 if (wpa_s->conf->ap_scan == 1) {
1735 #else
1736                 if (wpa_s->conf->ap_scan == 1 &&
1737                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1738 #endif
1739                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1740                                 wpa_msg(wpa_s, MSG_WARNING,
1741                                         "WPA/RSN IEs not updated");
1742                 }
1743         }
1744
1745 #ifdef CONFIG_SME
1746         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1747         wpa_s->sme.prev_bssid_set = 1;
1748 #endif /* CONFIG_SME */
1749
1750         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1751         if (wpa_s->current_ssid) {
1752                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1753                  * initialized before association, but for other modes,
1754                  * initialize PC/SC here, if the current configuration needs
1755                  * smartcard or SIM/USIM. */
1756                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1757         }
1758         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1759         if (wpa_s->l2)
1760                 l2_packet_notify_auth_start(wpa_s->l2);
1761
1762         /*
1763          * Set portEnabled first to FALSE in order to get EAP state machine out
1764          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1765          * state machine may transit to AUTHENTICATING state based on obsolete
1766          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1767          * AUTHENTICATED without ever giving chance to EAP state machine to
1768          * reset the state.
1769          */
1770         if (!ft_completed) {
1771                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1772                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1773         }
1774         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1775                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1776         /* 802.1X::portControl = Auto */
1777         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1778         wpa_s->eapol_received = 0;
1779         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1780             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1781             (wpa_s->current_ssid &&
1782              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1783                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1784                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1785         } else if (!ft_completed) {
1786                 /* Timeout for receiving the first EAPOL packet */
1787                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1788         }
1789         wpa_supplicant_cancel_scan(wpa_s);
1790
1791         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1792             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1793                 /*
1794                  * We are done; the driver will take care of RSN 4-way
1795                  * handshake.
1796                  */
1797                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1798                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1799                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1800                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1801         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1802                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1803                 /*
1804                  * The driver will take care of RSN 4-way handshake, so we need
1805                  * to allow EAPOL supplicant to complete its work without
1806                  * waiting for WPA supplicant.
1807                  */
1808                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1809         } else if (ft_completed) {
1810                 /*
1811                  * FT protocol completed - make sure EAPOL state machine ends
1812                  * up in authenticated.
1813                  */
1814                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1815                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1816                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1817                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1818         }
1819
1820         wpa_s->last_eapol_matches_bssid = 0;
1821
1822         if (wpa_s->pending_eapol_rx) {
1823                 struct os_time now, age;
1824                 os_get_time(&now);
1825                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1826                 if (age.sec == 0 && age.usec < 100000 &&
1827                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1828                     0) {
1829                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1830                                 "frame that was received just before "
1831                                 "association notification");
1832                         wpa_supplicant_rx_eapol(
1833                                 wpa_s, wpa_s->pending_eapol_rx_src,
1834                                 wpabuf_head(wpa_s->pending_eapol_rx),
1835                                 wpabuf_len(wpa_s->pending_eapol_rx));
1836                 }
1837                 wpabuf_free(wpa_s->pending_eapol_rx);
1838                 wpa_s->pending_eapol_rx = NULL;
1839         }
1840
1841         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1842              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1843             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1844             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1845                 /* Set static WEP keys again */
1846                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1847         }
1848
1849 #ifdef CONFIG_IBSS_RSN
1850         if (wpa_s->current_ssid &&
1851             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1852             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1853             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1854             wpa_s->ibss_rsn == NULL) {
1855                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1856                 if (!wpa_s->ibss_rsn) {
1857                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1858                         wpa_supplicant_deauthenticate(
1859                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1860                         return;
1861                 }
1862
1863                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1864         }
1865 #endif /* CONFIG_IBSS_RSN */
1866
1867         wpas_wps_notify_assoc(wpa_s, bssid);
1868 }
1869
1870
1871 static int disconnect_reason_recoverable(u16 reason_code)
1872 {
1873         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
1874                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
1875                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
1876 }
1877
1878
1879 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1880                                           u16 reason_code,
1881                                           int locally_generated)
1882 {
1883         const u8 *bssid;
1884
1885         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1886                 /*
1887                  * At least Host AP driver and a Prism3 card seemed to be
1888                  * generating streams of disconnected events when configuring
1889                  * IBSS for WPA-None. Ignore them for now.
1890                  */
1891                 return;
1892         }
1893
1894         bssid = wpa_s->bssid;
1895         if (is_zero_ether_addr(bssid))
1896                 bssid = wpa_s->pending_bssid;
1897
1898         if (!is_zero_ether_addr(bssid) ||
1899             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1900                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1901                         " reason=%d%s",
1902                         MAC2STR(bssid), reason_code,
1903                         locally_generated ? " locally_generated=1" : "");
1904         }
1905 }
1906
1907
1908 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
1909                                  int locally_generated)
1910 {
1911         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
1912             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
1913                 return 0; /* Not in 4-way handshake with PSK */
1914
1915         /*
1916          * It looks like connection was lost while trying to go through PSK
1917          * 4-way handshake. Filter out known disconnection cases that are caused
1918          * by something else than PSK mismatch to avoid confusing reports.
1919          */
1920
1921         if (locally_generated) {
1922                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
1923                         return 0;
1924         }
1925
1926         return 1;
1927 }
1928
1929
1930 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
1931                                                  u16 reason_code,
1932                                                  int locally_generated)
1933 {
1934         const u8 *bssid;
1935         int authenticating;
1936         u8 prev_pending_bssid[ETH_ALEN];
1937         struct wpa_bss *fast_reconnect = NULL;
1938         struct wpa_ssid *fast_reconnect_ssid = NULL;
1939         struct wpa_ssid *last_ssid;
1940
1941         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1942         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1943
1944         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1945                 /*
1946                  * At least Host AP driver and a Prism3 card seemed to be
1947                  * generating streams of disconnected events when configuring
1948                  * IBSS for WPA-None. Ignore them for now.
1949                  */
1950                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1951                         "IBSS/WPA-None mode");
1952                 return;
1953         }
1954
1955         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
1956                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1957                         "pre-shared key may be incorrect");
1958                 wpas_auth_failed(wpa_s);
1959         }
1960         if (!wpa_s->disconnected &&
1961             (!wpa_s->auto_reconnect_disabled ||
1962              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)) {
1963                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
1964                         "reconnect (wps=%d wpa_state=%d)",
1965                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
1966                         wpa_s->wpa_state);
1967                 if (wpa_s->wpa_state == WPA_COMPLETED &&
1968                     wpa_s->current_ssid &&
1969                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
1970                     !locally_generated &&
1971                     disconnect_reason_recoverable(reason_code)) {
1972                         /*
1973                          * It looks like the AP has dropped association with
1974                          * us, but could allow us to get back in. Try to
1975                          * reconnect to the same BSS without full scan to save
1976                          * time for some common cases.
1977                          */
1978                         fast_reconnect = wpa_s->current_bss;
1979                         fast_reconnect_ssid = wpa_s->current_ssid;
1980                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1981 #ifdef ANDROID
1982                         wpa_supplicant_req_scan(wpa_s, 0, 500000);
1983 #else
1984                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1985 #endif
1986                 else
1987                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
1988                                 "immediate scan");
1989         } else {
1990                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
1991                         "try to re-connect");
1992                 wpa_s->reassociate = 0;
1993                 wpa_s->disconnected = 1;
1994                 wpa_supplicant_cancel_sched_scan(wpa_s);
1995         }
1996         bssid = wpa_s->bssid;
1997         if (is_zero_ether_addr(bssid))
1998                 bssid = wpa_s->pending_bssid;
1999         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2000                 wpas_connection_failed(wpa_s, bssid);
2001         wpa_sm_notify_disassoc(wpa_s->wpa);
2002         if (locally_generated)
2003                 wpa_s->disconnect_reason = -reason_code;
2004         else
2005                 wpa_s->disconnect_reason = reason_code;
2006         wpas_notify_disconnect_reason(wpa_s);
2007         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2008                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2009                 wpa_s->keys_cleared = 0;
2010                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2011         }
2012         last_ssid = wpa_s->current_ssid;
2013         wpa_supplicant_mark_disassoc(wpa_s);
2014
2015         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2016                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2017                 wpa_s->current_ssid = last_ssid;
2018         }
2019
2020         if (fast_reconnect) {
2021 #ifndef CONFIG_NO_SCAN_PROCESSING
2022                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2023                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2024                                            fast_reconnect_ssid) < 0) {
2025                         /* Recover through full scan */
2026                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2027                 }
2028 #endif /* CONFIG_NO_SCAN_PROCESSING */
2029         }
2030 }
2031
2032
2033 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2034 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2035 {
2036         struct wpa_supplicant *wpa_s = eloop_ctx;
2037
2038         if (!wpa_s->pending_mic_error_report)
2039                 return;
2040
2041         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2042         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2043         wpa_s->pending_mic_error_report = 0;
2044 }
2045 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2046
2047
2048 static void
2049 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2050                                          union wpa_event_data *data)
2051 {
2052         int pairwise;
2053         struct os_time t;
2054
2055         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2056         pairwise = (data && data->michael_mic_failure.unicast);
2057         os_get_time(&t);
2058         if ((wpa_s->last_michael_mic_error &&
2059              t.sec - wpa_s->last_michael_mic_error <= 60) ||
2060             wpa_s->pending_mic_error_report) {
2061                 if (wpa_s->pending_mic_error_report) {
2062                         /*
2063                          * Send the pending MIC error report immediately since
2064                          * we are going to start countermeasures and AP better
2065                          * do the same.
2066                          */
2067                         wpa_sm_key_request(wpa_s->wpa, 1,
2068                                            wpa_s->pending_mic_error_pairwise);
2069                 }
2070
2071                 /* Send the new MIC error report immediately since we are going
2072                  * to start countermeasures and AP better do the same.
2073                  */
2074                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2075
2076                 /* initialize countermeasures */
2077                 wpa_s->countermeasures = 1;
2078
2079                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2080
2081                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2082
2083                 /*
2084                  * Need to wait for completion of request frame. We do not get
2085                  * any callback for the message completion, so just wait a
2086                  * short while and hope for the best. */
2087                 os_sleep(0, 10000);
2088
2089                 wpa_drv_set_countermeasures(wpa_s, 1);
2090                 wpa_supplicant_deauthenticate(wpa_s,
2091                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2092                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2093                                      wpa_s, NULL);
2094                 eloop_register_timeout(60, 0,
2095                                        wpa_supplicant_stop_countermeasures,
2096                                        wpa_s, NULL);
2097                 /* TODO: mark the AP rejected for 60 second. STA is
2098                  * allowed to associate with another AP.. */
2099         } else {
2100 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2101                 if (wpa_s->mic_errors_seen) {
2102                         /*
2103                          * Reduce the effectiveness of Michael MIC error
2104                          * reports as a means for attacking against TKIP if
2105                          * more than one MIC failure is noticed with the same
2106                          * PTK. We delay the transmission of the reports by a
2107                          * random time between 0 and 60 seconds in order to
2108                          * force the attacker wait 60 seconds before getting
2109                          * the information on whether a frame resulted in a MIC
2110                          * failure.
2111                          */
2112                         u8 rval[4];
2113                         int sec;
2114
2115                         if (os_get_random(rval, sizeof(rval)) < 0)
2116                                 sec = os_random() % 60;
2117                         else
2118                                 sec = WPA_GET_BE32(rval) % 60;
2119                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2120                                 "report %d seconds", sec);
2121                         wpa_s->pending_mic_error_report = 1;
2122                         wpa_s->pending_mic_error_pairwise = pairwise;
2123                         eloop_cancel_timeout(
2124                                 wpa_supplicant_delayed_mic_error_report,
2125                                 wpa_s, NULL);
2126                         eloop_register_timeout(
2127                                 sec, os_random() % 1000000,
2128                                 wpa_supplicant_delayed_mic_error_report,
2129                                 wpa_s, NULL);
2130                 } else {
2131                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2132                 }
2133 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2134                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2135 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2136         }
2137         wpa_s->last_michael_mic_error = t.sec;
2138         wpa_s->mic_errors_seen++;
2139 }
2140
2141
2142 #ifdef CONFIG_TERMINATE_ONLASTIF
2143 static int any_interfaces(struct wpa_supplicant *head)
2144 {
2145         struct wpa_supplicant *wpa_s;
2146
2147         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2148                 if (!wpa_s->interface_removed)
2149                         return 1;
2150         return 0;
2151 }
2152 #endif /* CONFIG_TERMINATE_ONLASTIF */
2153
2154
2155 static void
2156 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2157                                       union wpa_event_data *data)
2158 {
2159         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2160                 return;
2161
2162         switch (data->interface_status.ievent) {
2163         case EVENT_INTERFACE_ADDED:
2164                 if (!wpa_s->interface_removed)
2165                         break;
2166                 wpa_s->interface_removed = 0;
2167                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2168                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2169                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2170                                 "driver after interface was added");
2171                 }
2172                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2173                 break;
2174         case EVENT_INTERFACE_REMOVED:
2175                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2176                 wpa_s->interface_removed = 1;
2177                 wpa_supplicant_mark_disassoc(wpa_s);
2178                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2179                 l2_packet_deinit(wpa_s->l2);
2180                 wpa_s->l2 = NULL;
2181 #ifdef CONFIG_IBSS_RSN
2182                 ibss_rsn_deinit(wpa_s->ibss_rsn);
2183                 wpa_s->ibss_rsn = NULL;
2184 #endif /* CONFIG_IBSS_RSN */
2185 #ifdef CONFIG_TERMINATE_ONLASTIF
2186                 /* check if last interface */
2187                 if (!any_interfaces(wpa_s->global->ifaces))
2188                         eloop_terminate();
2189 #endif /* CONFIG_TERMINATE_ONLASTIF */
2190                 break;
2191         }
2192 }
2193
2194
2195 #ifdef CONFIG_PEERKEY
2196 static void
2197 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2198                               union wpa_event_data *data)
2199 {
2200         if (data == NULL)
2201                 return;
2202         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2203 }
2204 #endif /* CONFIG_PEERKEY */
2205
2206
2207 #ifdef CONFIG_TDLS
2208 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2209                                       union wpa_event_data *data)
2210 {
2211         if (data == NULL)
2212                 return;
2213         switch (data->tdls.oper) {
2214         case TDLS_REQUEST_SETUP:
2215                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2216                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2217                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2218                 else
2219                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2220                 break;
2221         case TDLS_REQUEST_TEARDOWN:
2222                 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2223                                        data->tdls.reason_code);
2224                 break;
2225         }
2226 }
2227 #endif /* CONFIG_TDLS */
2228
2229
2230 #ifdef CONFIG_WNM
2231 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2232                                      union wpa_event_data *data)
2233 {
2234         if (data == NULL)
2235                 return;
2236         switch (data->wnm.oper) {
2237         case WNM_OPER_SLEEP:
2238                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2239                            "(action=%d, intval=%d)",
2240                            data->wnm.sleep_action, data->wnm.sleep_intval);
2241                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2242                                              data->wnm.sleep_intval, NULL);
2243                 break;
2244         }
2245 }
2246 #endif /* CONFIG_WNM */
2247
2248
2249 #ifdef CONFIG_IEEE80211R
2250 static void
2251 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2252                                  union wpa_event_data *data)
2253 {
2254         if (data == NULL)
2255                 return;
2256
2257         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2258                                     data->ft_ies.ies_len,
2259                                     data->ft_ies.ft_action,
2260                                     data->ft_ies.target_ap,
2261                                     data->ft_ies.ric_ies,
2262                                     data->ft_ies.ric_ies_len) < 0) {
2263                 /* TODO: prevent MLME/driver from trying to associate? */
2264         }
2265 }
2266 #endif /* CONFIG_IEEE80211R */
2267
2268
2269 #ifdef CONFIG_IBSS_RSN
2270 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2271                                                 union wpa_event_data *data)
2272 {
2273         struct wpa_ssid *ssid;
2274         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2275                 return;
2276         if (data == NULL)
2277                 return;
2278         ssid = wpa_s->current_ssid;
2279         if (ssid == NULL)
2280                 return;
2281         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2282                 return;
2283
2284         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2285 }
2286 #endif /* CONFIG_IBSS_RSN */
2287
2288
2289 #ifdef CONFIG_IEEE80211R
2290 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2291                          size_t len)
2292 {
2293         const u8 *sta_addr, *target_ap_addr;
2294         u16 status;
2295
2296         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2297         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2298                 return; /* only SME case supported for now */
2299         if (len < 1 + 2 * ETH_ALEN + 2)
2300                 return;
2301         if (data[0] != 2)
2302                 return; /* Only FT Action Response is supported for now */
2303         sta_addr = data + 1;
2304         target_ap_addr = data + 1 + ETH_ALEN;
2305         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2306         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2307                 MACSTR " TargetAP " MACSTR " status %u",
2308                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2309
2310         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2311                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2312                         " in FT Action Response", MAC2STR(sta_addr));
2313                 return;
2314         }
2315
2316         if (status) {
2317                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2318                         "failure (status code %d)", status);
2319                 /* TODO: report error to FT code(?) */
2320                 return;
2321         }
2322
2323         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2324                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2325                                     target_ap_addr, NULL, 0) < 0)
2326                 return;
2327
2328 #ifdef CONFIG_SME
2329         {
2330                 struct wpa_bss *bss;
2331                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2332                 if (bss)
2333                         wpa_s->sme.freq = bss->freq;
2334                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2335                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2336                               WLAN_AUTH_FT);
2337         }
2338 #endif /* CONFIG_SME */
2339 }
2340 #endif /* CONFIG_IEEE80211R */
2341
2342
2343 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2344                                                struct unprot_deauth *e)
2345 {
2346 #ifdef CONFIG_IEEE80211W
2347         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2348                    "dropped: " MACSTR " -> " MACSTR
2349                    " (reason code %u)",
2350                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2351         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2352 #endif /* CONFIG_IEEE80211W */
2353 }
2354
2355
2356 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2357                                                  struct unprot_disassoc *e)
2358 {
2359 #ifdef CONFIG_IEEE80211W
2360         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2361                    "dropped: " MACSTR " -> " MACSTR
2362                    " (reason code %u)",
2363                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2364         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2365 #endif /* CONFIG_IEEE80211W */
2366 }
2367
2368
2369 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2370                           union wpa_event_data *data)
2371 {
2372         struct wpa_supplicant *wpa_s = ctx;
2373         u16 reason_code = 0;
2374         int locally_generated = 0;
2375
2376         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2377             event != EVENT_INTERFACE_ENABLED &&
2378             event != EVENT_INTERFACE_STATUS &&
2379             event != EVENT_SCHED_SCAN_STOPPED) {
2380                 wpa_dbg(wpa_s, MSG_DEBUG,
2381                         "Ignore event %s (%d) while interface is disabled",
2382                         event_to_string(event), event);
2383                 return;
2384         }
2385
2386 #ifndef CONFIG_NO_STDOUT_DEBUG
2387 {
2388         int level = MSG_DEBUG;
2389
2390         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2391                 const struct ieee80211_hdr *hdr;
2392                 u16 fc;
2393                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2394                 fc = le_to_host16(hdr->frame_control);
2395                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2396                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2397                         level = MSG_EXCESSIVE;
2398         }
2399
2400         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2401                 event_to_string(event), event);
2402 }
2403 #endif /* CONFIG_NO_STDOUT_DEBUG */
2404
2405         switch (event) {
2406         case EVENT_AUTH:
2407                 sme_event_auth(wpa_s, data);
2408                 break;
2409         case EVENT_ASSOC:
2410                 wpa_supplicant_event_assoc(wpa_s, data);
2411                 break;
2412         case EVENT_DISASSOC:
2413                 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2414                 if (data) {
2415                         wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2416                                 data->disassoc_info.reason_code,
2417                                 data->disassoc_info.locally_generated ?
2418                                 " (locally generated)" : "");
2419                         if (data->disassoc_info.addr)
2420                                 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2421                                         MAC2STR(data->disassoc_info.addr));
2422                 }
2423 #ifdef CONFIG_AP
2424                 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
2425                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2426                                                data->disassoc_info.addr);
2427                         break;
2428                 }
2429                 if (wpa_s->ap_iface) {
2430                         wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in "
2431                                 "AP mode");
2432                         break;
2433                 }
2434 #endif /* CONFIG_AP */
2435                 if (data) {
2436                         reason_code = data->disassoc_info.reason_code;
2437                         locally_generated =
2438                                 data->disassoc_info.locally_generated;
2439                         wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2440                                     data->disassoc_info.ie,
2441                                     data->disassoc_info.ie_len);
2442 #ifdef CONFIG_P2P
2443                         wpas_p2p_disassoc_notif(
2444                                 wpa_s, data->disassoc_info.addr, reason_code,
2445                                 data->disassoc_info.ie,
2446                                 data->disassoc_info.ie_len,
2447                                 locally_generated);
2448 #endif /* CONFIG_P2P */
2449                 }
2450                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2451                         sme_event_disassoc(wpa_s, data);
2452                 /* fall through */
2453         case EVENT_DEAUTH:
2454                 if (event == EVENT_DEAUTH) {
2455                         wpa_dbg(wpa_s, MSG_DEBUG,
2456                                 "Deauthentication notification");
2457                         if (data) {
2458                                 reason_code = data->deauth_info.reason_code;
2459                                 locally_generated =
2460                                         data->deauth_info.locally_generated;
2461                                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2462                                         data->deauth_info.reason_code,
2463                                         data->deauth_info.locally_generated ?
2464                                         " (locally generated)" : "");
2465                                 if (data->deauth_info.addr) {
2466                                         wpa_dbg(wpa_s, MSG_DEBUG, " * address "
2467                                                 MACSTR,
2468                                                 MAC2STR(data->deauth_info.
2469                                                         addr));
2470                                 }
2471                                 wpa_hexdump(MSG_DEBUG,
2472                                             "Deauthentication frame IE(s)",
2473                                             data->deauth_info.ie,
2474                                             data->deauth_info.ie_len);
2475                         }
2476                 }
2477 #ifdef CONFIG_AP
2478                 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
2479                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2480                                                data->deauth_info.addr);
2481                         break;
2482                 }
2483                 if (wpa_s->ap_iface) {
2484                         wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in "
2485                                 "AP mode");
2486                         break;
2487                 }
2488 #endif /* CONFIG_AP */
2489                 wpa_supplicant_event_disassoc(wpa_s, reason_code,
2490                                               locally_generated);
2491                 if (reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2492                     ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2493                       (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2494                      eapol_sm_failed(wpa_s->eapol)))
2495                         wpas_auth_failed(wpa_s);
2496 #ifdef CONFIG_P2P
2497                 if (event == EVENT_DEAUTH && data) {
2498                         if (wpas_p2p_deauth_notif(wpa_s,
2499                                                   data->deauth_info.addr,
2500                                                   reason_code,
2501                                                   data->deauth_info.ie,
2502                                                   data->deauth_info.ie_len,
2503                                                   locally_generated) > 0) {
2504                                 /*
2505                                  * The interface was removed, so cannot
2506                                  * continue processing any additional
2507                                  * operations after this.
2508                                  */
2509                                 break;
2510                         }
2511                 }
2512 #endif /* CONFIG_P2P */
2513                 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2514                                                      locally_generated);
2515                 break;
2516         case EVENT_MICHAEL_MIC_FAILURE:
2517                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2518                 break;
2519 #ifndef CONFIG_NO_SCAN_PROCESSING
2520         case EVENT_SCAN_RESULTS:
2521                 wpa_supplicant_event_scan_results(wpa_s, data);
2522                 if (wpa_s->wpa_state != WPA_AUTHENTICATING &&
2523                     wpa_s->wpa_state != WPA_ASSOCIATING)
2524                         wpas_p2p_continue_after_scan(wpa_s);
2525                 break;
2526 #endif /* CONFIG_NO_SCAN_PROCESSING */
2527         case EVENT_ASSOCINFO:
2528                 wpa_supplicant_event_associnfo(wpa_s, data);
2529                 break;
2530         case EVENT_INTERFACE_STATUS:
2531                 wpa_supplicant_event_interface_status(wpa_s, data);
2532                 break;
2533         case EVENT_PMKID_CANDIDATE:
2534                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2535                 break;
2536 #ifdef CONFIG_PEERKEY
2537         case EVENT_STKSTART:
2538                 wpa_supplicant_event_stkstart(wpa_s, data);
2539                 break;
2540 #endif /* CONFIG_PEERKEY */
2541 #ifdef CONFIG_TDLS
2542         case EVENT_TDLS:
2543                 wpa_supplicant_event_tdls(wpa_s, data);
2544                 break;
2545 #endif /* CONFIG_TDLS */
2546 #ifdef CONFIG_WNM
2547         case EVENT_WNM:
2548                 wpa_supplicant_event_wnm(wpa_s, data);
2549                 break;
2550 #endif /* CONFIG_WNM */
2551 #ifdef CONFIG_IEEE80211R
2552         case EVENT_FT_RESPONSE:
2553                 wpa_supplicant_event_ft_response(wpa_s, data);
2554                 break;
2555 #endif /* CONFIG_IEEE80211R */
2556 #ifdef CONFIG_IBSS_RSN
2557         case EVENT_IBSS_RSN_START:
2558                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2559                 break;
2560 #endif /* CONFIG_IBSS_RSN */
2561         case EVENT_ASSOC_REJECT:
2562                 if (data->assoc_reject.bssid)
2563                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2564                                 "bssid=" MACSTR " status_code=%u",
2565                                 MAC2STR(data->assoc_reject.bssid),
2566                                 data->assoc_reject.status_code);
2567                 else
2568                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2569                                 "status_code=%u",
2570                                 data->assoc_reject.status_code);
2571                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2572                         sme_event_assoc_reject(wpa_s, data);
2573                 else {
2574 #ifdef ANDROID_P2P
2575                         if(!wpa_s->current_ssid) {
2576                                 wpa_printf(MSG_ERROR, "current_ssid == NULL");
2577                                 break;
2578                         }
2579                         /* If assoc reject is reported by the driver, then avoid
2580                          * waiting for  the authentication timeout. Cancel the
2581                          * authentication timeout and retry the assoc.
2582                          */
2583                         if(wpa_s->current_ssid->assoc_retry++ < 10) {
2584                                 wpa_printf(MSG_ERROR, "Retrying assoc: %d ",
2585                                                                 wpa_s->current_ssid->assoc_retry);
2586
2587                                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2588
2589                                 /* Clear the states */
2590                                 wpa_sm_notify_disassoc(wpa_s->wpa);
2591                                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2592
2593                                 wpa_s->reassociate = 1;
2594                                 if (wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE) {
2595                                         const u8 *bl_bssid = data->assoc_reject.bssid;
2596                                         if (!bl_bssid || is_zero_ether_addr(bl_bssid))
2597                                                 bl_bssid = wpa_s->pending_bssid;
2598                                         wpa_blacklist_add(wpa_s, bl_bssid);
2599                                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2600                                 } else {
2601                                         wpa_supplicant_req_scan(wpa_s, 1, 0);
2602                                 }
2603                         } else if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
2604                                 /* If we ASSOC_REJECT's hits threshold, disable the
2605                                  * network
2606                                  */
2607                                 wpa_printf(MSG_ERROR, "Assoc retry threshold reached. "
2608                                 "Disabling the network");
2609                                 wpa_s->current_ssid->assoc_retry = 0;
2610                                 wpa_supplicant_disable_network(wpa_s, wpa_s->current_ssid);
2611                                 wpas_p2p_group_remove(wpa_s, wpa_s->ifname);
2612                         }
2613 #else
2614                         const u8 *bssid = data->assoc_reject.bssid;
2615                         if (bssid == NULL || is_zero_ether_addr(bssid))
2616                                 bssid = wpa_s->pending_bssid;
2617                         wpas_connection_failed(wpa_s, bssid);
2618                         wpa_supplicant_mark_disassoc(wpa_s);
2619 #endif /* ANDROID_P2P */
2620                 }
2621                 break;
2622         case EVENT_AUTH_TIMED_OUT:
2623                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2624                         sme_event_auth_timed_out(wpa_s, data);
2625                 break;
2626         case EVENT_ASSOC_TIMED_OUT:
2627                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2628                         sme_event_assoc_timed_out(wpa_s, data);
2629                 break;
2630         case EVENT_TX_STATUS:
2631                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2632                         " type=%d stype=%d",
2633                         MAC2STR(data->tx_status.dst),
2634                         data->tx_status.type, data->tx_status.stype);
2635 #ifdef CONFIG_AP
2636                 if (wpa_s->ap_iface == NULL) {
2637 #ifdef CONFIG_OFFCHANNEL
2638                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2639                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2640                                 offchannel_send_action_tx_status(
2641                                         wpa_s, data->tx_status.dst,
2642                                         data->tx_status.data,
2643                                         data->tx_status.data_len,
2644                                         data->tx_status.ack ?
2645                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
2646                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
2647 #endif /* CONFIG_OFFCHANNEL */
2648                         break;
2649                 }
2650 #endif /* CONFIG_AP */
2651 #ifdef CONFIG_OFFCHANNEL
2652                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2653                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2654                 /*
2655                  * Catch TX status events for Action frames we sent via group
2656                  * interface in GO mode.
2657                  */
2658                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2659                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2660                     os_memcmp(wpa_s->parent->pending_action_dst,
2661                               data->tx_status.dst, ETH_ALEN) == 0) {
2662                         offchannel_send_action_tx_status(
2663                                 wpa_s->parent, data->tx_status.dst,
2664                                 data->tx_status.data,
2665                                 data->tx_status.data_len,
2666                                 data->tx_status.ack ?
2667                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
2668                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
2669                         break;
2670                 }
2671 #endif /* CONFIG_OFFCHANNEL */
2672 #ifdef CONFIG_AP
2673                 switch (data->tx_status.type) {
2674                 case WLAN_FC_TYPE_MGMT:
2675                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2676                                       data->tx_status.data_len,
2677                                       data->tx_status.stype,
2678                                       data->tx_status.ack);
2679                         break;
2680                 case WLAN_FC_TYPE_DATA:
2681                         ap_tx_status(wpa_s, data->tx_status.dst,
2682                                      data->tx_status.data,
2683                                      data->tx_status.data_len,
2684                                      data->tx_status.ack);
2685                         break;
2686                 }
2687 #endif /* CONFIG_AP */
2688                 break;
2689 #ifdef CONFIG_AP
2690         case EVENT_EAPOL_TX_STATUS:
2691                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
2692                                    data->eapol_tx_status.data,
2693                                    data->eapol_tx_status.data_len,
2694                                    data->eapol_tx_status.ack);
2695                 break;
2696         case EVENT_DRIVER_CLIENT_POLL_OK:
2697                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
2698                 break;
2699         case EVENT_RX_FROM_UNKNOWN:
2700                 if (wpa_s->ap_iface == NULL)
2701                         break;
2702                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
2703                                        data->rx_from_unknown.wds);
2704                 break;
2705         case EVENT_CH_SWITCH:
2706                 if (!data)
2707                         break;
2708                 if (!wpa_s->ap_iface) {
2709                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
2710                                 "event in non-AP mode");
2711                         break;
2712                 }
2713
2714 #ifdef CONFIG_AP
2715                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
2716                                   data->ch_switch.ht_enabled,
2717                                   data->ch_switch.ch_offset);
2718 #endif /* CONFIG_AP */
2719                 break;
2720         case EVENT_RX_MGMT: {
2721                 u16 fc, stype;
2722                 const struct ieee80211_mgmt *mgmt;
2723
2724                 mgmt = (const struct ieee80211_mgmt *)
2725                         data->rx_mgmt.frame;
2726                 fc = le_to_host16(mgmt->frame_control);
2727                 stype = WLAN_FC_GET_STYPE(fc);
2728
2729                 if (wpa_s->ap_iface == NULL) {
2730 #ifdef CONFIG_P2P
2731                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2732                             data->rx_mgmt.frame_len > 24) {
2733                                 const u8 *src = mgmt->sa;
2734                                 const u8 *ie = mgmt->u.probe_req.variable;
2735                                 size_t ie_len = data->rx_mgmt.frame_len -
2736                                         (mgmt->u.probe_req.variable -
2737                                          data->rx_mgmt.frame);
2738                                 wpas_p2p_probe_req_rx(
2739                                         wpa_s, src, mgmt->da,
2740                                         mgmt->bssid, ie, ie_len,
2741                                         data->rx_mgmt.ssi_signal);
2742                                 break;
2743                         }
2744 #endif /* CONFIG_P2P */
2745                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2746                                 "management frame in non-AP mode");
2747                         break;
2748                 }
2749
2750                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2751                     data->rx_mgmt.frame_len > 24) {
2752                         const u8 *ie = mgmt->u.probe_req.variable;
2753                         size_t ie_len = data->rx_mgmt.frame_len -
2754                                 (mgmt->u.probe_req.variable -
2755                                  data->rx_mgmt.frame);
2756
2757                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
2758                                          mgmt->bssid, ie, ie_len,
2759                                          data->rx_mgmt.ssi_signal);
2760                 }
2761
2762                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2763                 break;
2764                 }
2765 #endif /* CONFIG_AP */
2766         case EVENT_RX_ACTION:
2767                 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2768                         " Category=%u DataLen=%d freq=%d MHz",
2769                         MAC2STR(data->rx_action.sa),
2770                         data->rx_action.category, (int) data->rx_action.len,
2771                         data->rx_action.freq);
2772 #ifdef CONFIG_IEEE80211R
2773                 if (data->rx_action.category == WLAN_ACTION_FT) {
2774                         ft_rx_action(wpa_s, data->rx_action.data,
2775                                      data->rx_action.len);
2776                         break;
2777                 }
2778 #endif /* CONFIG_IEEE80211R */
2779 #ifdef CONFIG_IEEE80211W
2780 #ifdef CONFIG_SME
2781                 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2782                         sme_sa_query_rx(wpa_s, data->rx_action.sa,
2783                                         data->rx_action.data,
2784                                         data->rx_action.len);
2785                         break;
2786                 }
2787 #endif /* CONFIG_SME */
2788 #endif /* CONFIG_IEEE80211W */
2789 #ifdef CONFIG_WNM
2790                 if (data->rx_action.category == WLAN_ACTION_WNM) {
2791                         ieee802_11_rx_wnm_action(wpa_s, &data->rx_action);
2792                         break;
2793                 }
2794 #endif /* CONFIG_WNM */
2795 #ifdef CONFIG_GAS
2796                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2797                     gas_query_rx(wpa_s->gas, data->rx_action.da,
2798                                  data->rx_action.sa, data->rx_action.bssid,
2799                                  data->rx_action.data, data->rx_action.len,
2800                                  data->rx_action.freq) == 0)
2801                         break;
2802 #endif /* CONFIG_GAS */
2803 #ifdef CONFIG_TDLS
2804                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2805                     data->rx_action.len >= 4 &&
2806                     data->rx_action.data[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2807                         wpa_dbg(wpa_s, MSG_DEBUG, "TDLS: Received Discovery "
2808                                 "Response from " MACSTR,
2809                                 MAC2STR(data->rx_action.sa));
2810                         break;
2811                 }
2812 #endif /* CONFIG_TDLS */
2813 #ifdef CONFIG_P2P
2814                 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2815                                    data->rx_action.sa,
2816                                    data->rx_action.bssid,
2817                                    data->rx_action.category,
2818                                    data->rx_action.data,
2819                                    data->rx_action.len, data->rx_action.freq);
2820 #endif /* CONFIG_P2P */
2821                 break;
2822         case EVENT_RX_PROBE_REQ:
2823                 if (data->rx_probe_req.sa == NULL ||
2824                     data->rx_probe_req.ie == NULL)
2825                         break;
2826 #ifdef CONFIG_AP
2827                 if (wpa_s->ap_iface) {
2828                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2829                                              data->rx_probe_req.sa,
2830                                              data->rx_probe_req.da,
2831                                              data->rx_probe_req.bssid,
2832                                              data->rx_probe_req.ie,
2833                                              data->rx_probe_req.ie_len,
2834                                              data->rx_probe_req.ssi_signal);
2835                         break;
2836                 }
2837 #endif /* CONFIG_AP */
2838 #ifdef CONFIG_P2P
2839                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2840                                       data->rx_probe_req.da,
2841                                       data->rx_probe_req.bssid,
2842                                       data->rx_probe_req.ie,
2843                                       data->rx_probe_req.ie_len,
2844                                       data->rx_probe_req.ssi_signal);
2845 #endif /* CONFIG_P2P */
2846                 break;
2847         case EVENT_REMAIN_ON_CHANNEL:
2848 #ifdef CONFIG_OFFCHANNEL
2849                 offchannel_remain_on_channel_cb(
2850                         wpa_s, data->remain_on_channel.freq,
2851                         data->remain_on_channel.duration);
2852 #endif /* CONFIG_OFFCHANNEL */
2853 #ifdef CONFIG_P2P
2854                 wpas_p2p_remain_on_channel_cb(
2855                         wpa_s, data->remain_on_channel.freq,
2856                         data->remain_on_channel.duration);
2857 #endif /* CONFIG_P2P */
2858                 break;
2859         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2860 #ifdef CONFIG_OFFCHANNEL
2861                 offchannel_cancel_remain_on_channel_cb(
2862                         wpa_s, data->remain_on_channel.freq);
2863 #endif /* CONFIG_OFFCHANNEL */
2864 #ifdef CONFIG_P2P
2865                 wpas_p2p_cancel_remain_on_channel_cb(
2866                         wpa_s, data->remain_on_channel.freq);
2867 #endif /* CONFIG_P2P */
2868                 break;
2869 #ifdef CONFIG_P2P
2870         case EVENT_P2P_DEV_FOUND: {
2871                 struct p2p_peer_info peer_info;
2872
2873                 os_memset(&peer_info, 0, sizeof(peer_info));
2874                 if (data->p2p_dev_found.dev_addr)
2875                         os_memcpy(peer_info.p2p_device_addr,
2876                                   data->p2p_dev_found.dev_addr, ETH_ALEN);
2877                 if (data->p2p_dev_found.pri_dev_type)
2878                         os_memcpy(peer_info.pri_dev_type,
2879                                   data->p2p_dev_found.pri_dev_type,
2880                                   sizeof(peer_info.pri_dev_type));
2881                 if (data->p2p_dev_found.dev_name)
2882                         os_strlcpy(peer_info.device_name,
2883                                    data->p2p_dev_found.dev_name,
2884                                    sizeof(peer_info.device_name));
2885                 peer_info.config_methods = data->p2p_dev_found.config_methods;
2886                 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2887                 peer_info.group_capab = data->p2p_dev_found.group_capab;
2888
2889                 /*
2890                  * FIX: new_device=1 is not necessarily correct. We should
2891                  * maintain a P2P peer database in wpa_supplicant and update
2892                  * this information based on whether the peer is truly new.
2893                  */
2894                 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2895                 break;
2896                 }
2897         case EVENT_P2P_GO_NEG_REQ_RX:
2898                 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2899                                    data->p2p_go_neg_req_rx.dev_passwd_id);
2900                 break;
2901         case EVENT_P2P_GO_NEG_COMPLETED:
2902                 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2903                 break;
2904         case EVENT_P2P_PROV_DISC_REQUEST:
2905                 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2906                                    data->p2p_prov_disc_req.config_methods,
2907                                    data->p2p_prov_disc_req.dev_addr,
2908                                    data->p2p_prov_disc_req.pri_dev_type,
2909                                    data->p2p_prov_disc_req.dev_name,
2910                                    data->p2p_prov_disc_req.supp_config_methods,
2911                                    data->p2p_prov_disc_req.dev_capab,
2912                                    data->p2p_prov_disc_req.group_capab,
2913                                    NULL, 0);
2914                 break;
2915         case EVENT_P2P_PROV_DISC_RESPONSE:
2916                 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2917                                     data->p2p_prov_disc_resp.config_methods);
2918                 break;
2919         case EVENT_P2P_SD_REQUEST:
2920                 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2921                                 data->p2p_sd_req.sa,
2922                                 data->p2p_sd_req.dialog_token,
2923                                 data->p2p_sd_req.update_indic,
2924                                 data->p2p_sd_req.tlvs,
2925                                 data->p2p_sd_req.tlvs_len);
2926                 break;
2927         case EVENT_P2P_SD_RESPONSE:
2928                 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2929                                  data->p2p_sd_resp.update_indic,
2930                                  data->p2p_sd_resp.tlvs,
2931                                  data->p2p_sd_resp.tlvs_len);
2932                 break;
2933 #endif /* CONFIG_P2P */
2934         case EVENT_EAPOL_RX:
2935                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2936                                         data->eapol_rx.data,
2937                                         data->eapol_rx.data_len);
2938                 break;
2939         case EVENT_SIGNAL_CHANGE:
2940                 bgscan_notify_signal_change(
2941                         wpa_s, data->signal_change.above_threshold,
2942                         data->signal_change.current_signal,
2943                         data->signal_change.current_noise,
2944                         data->signal_change.current_txrate);
2945                 break;
2946         case EVENT_INTERFACE_ENABLED:
2947                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2948                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2949                         wpa_supplicant_update_mac_addr(wpa_s);
2950 #ifdef CONFIG_AP
2951                         if (!wpa_s->ap_iface) {
2952                                 wpa_supplicant_set_state(wpa_s,
2953                                                          WPA_DISCONNECTED);
2954                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2955                         } else
2956                                 wpa_supplicant_set_state(wpa_s,
2957                                                          WPA_COMPLETED);
2958 #else /* CONFIG_AP */
2959                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2960                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2961 #endif /* CONFIG_AP */
2962                 }
2963                 break;
2964         case EVENT_INTERFACE_DISABLED:
2965                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2966                 wpa_supplicant_mark_disassoc(wpa_s);
2967                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2968                 break;
2969         case EVENT_CHANNEL_LIST_CHANGED:
2970                 if (wpa_s->drv_priv == NULL)
2971                         break; /* Ignore event during drv initialization */
2972
2973                 free_hw_features(wpa_s);
2974                 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2975                         wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2976
2977 #ifdef CONFIG_P2P
2978                 wpas_p2p_update_channel_list(wpa_s);
2979 #endif /* CONFIG_P2P */
2980                 break;
2981         case EVENT_INTERFACE_UNAVAILABLE:
2982 #ifdef CONFIG_P2P
2983                 wpas_p2p_interface_unavailable(wpa_s);
2984 #endif /* CONFIG_P2P */
2985                 break;
2986         case EVENT_BEST_CHANNEL:
2987                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2988                         "(%d %d %d)",
2989                         data->best_chan.freq_24, data->best_chan.freq_5,
2990                         data->best_chan.freq_overall);
2991                 wpa_s->best_24_freq = data->best_chan.freq_24;
2992                 wpa_s->best_5_freq = data->best_chan.freq_5;
2993                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2994 #ifdef CONFIG_P2P
2995                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2996                                               data->best_chan.freq_5,
2997                                               data->best_chan.freq_overall);
2998 #endif /* CONFIG_P2P */
2999                 break;
3000         case EVENT_UNPROT_DEAUTH:
3001                 wpa_supplicant_event_unprot_deauth(wpa_s,
3002                                                    &data->unprot_deauth);
3003                 break;
3004         case EVENT_UNPROT_DISASSOC:
3005                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3006                                                      &data->unprot_disassoc);
3007                 break;
3008         case EVENT_STATION_LOW_ACK:
3009 #ifdef CONFIG_AP
3010                 if (wpa_s->ap_iface && data)
3011                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3012                                                   data->low_ack.addr);
3013 #endif /* CONFIG_AP */
3014 #ifdef CONFIG_TDLS
3015                 if (data)
3016                         wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
3017 #endif /* CONFIG_TDLS */
3018                 break;
3019         case EVENT_IBSS_PEER_LOST:
3020 #ifdef CONFIG_IBSS_RSN
3021                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3022 #endif /* CONFIG_IBSS_RSN */
3023                 break;
3024         case EVENT_DRIVER_GTK_REKEY:
3025                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3026                               wpa_s->bssid, ETH_ALEN))
3027                         break;
3028                 if (!wpa_s->wpa)
3029                         break;
3030                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3031                                          data->driver_gtk_rekey.replay_ctr);
3032                 break;
3033         case EVENT_SCHED_SCAN_STOPPED:
3034                 wpa_s->sched_scanning = 0;
3035                 wpa_supplicant_notify_scanning(wpa_s, 0);
3036
3037                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3038                         break;
3039
3040                 /*
3041                  * If we timed out, start a new sched scan to continue
3042                  * searching for more SSIDs.
3043                  */
3044                 if (wpa_s->sched_scan_timed_out)
3045                         wpa_supplicant_req_sched_scan(wpa_s);
3046                 break;
3047         case EVENT_WPS_BUTTON_PUSHED:
3048 #ifdef CONFIG_WPS
3049                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3050 #endif /* CONFIG_WPS */
3051                 break;
3052         case EVENT_CONNECT_FAILED_REASON:
3053 #ifdef CONFIG_AP
3054                 if (!wpa_s->ap_iface || !data)
3055                         break;
3056                 hostapd_event_connect_failed_reason(
3057                         wpa_s->ap_iface->bss[0],
3058                         data->connect_failed_reason.addr,
3059                         data->connect_failed_reason.code);
3060 #endif /* CONFIG_AP */
3061                 break;
3062         default:
3063                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3064                 break;
3065         }
3066 }