wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eapol_supp/eapol_supp_sm.h"
  19 #include "rsn_supp/wpa.h"
  20 #include "eloop.h"
  21 #include "config.h"
  22 #include "l2_packet/l2_packet.h"
  23 #include "wpa_supplicant_i.h"
  24 #include "driver_i.h"
  25 #include "pcsc_funcs.h"
  26 #include "rsn_supp/preauth.h"
  27 #include "rsn_supp/pmksa_cache.h"
  28 #include "common/wpa_ctrl.h"
  29 #include "eap_peer/eap.h"
  30 #include "ap/hostapd.h"
  31 #include "p2p/p2p.h"
  32 #include "notify.h"
  33 #include "common/ieee802_11_defs.h"
  34 #include "common/ieee802_11_common.h"
  35 #include "crypto/random.h"
  36 #include "blacklist.h"
  37 #include "wpas_glue.h"
  38 #include "wps_supplicant.h"
  39 #include "ibss_rsn.h"
  40 #include "sme.h"
  41 #include "gas_query.h"
  42 #include "p2p_supplicant.h"
  43 #include "bgscan.h"
  44 #include "ap.h"
  45 #include "bss.h"
  46 #include "scan.h"
  47 #include "offchannel.h"
  48
  49
  50 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  51 {
  52         struct wpa_ssid *ssid, *old_ssid;
  53
  54         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  55                 return 0;
  56
  57         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  58                 "information");
  59         ssid = wpa_supplicant_get_ssid(wpa_s);
  60         if (ssid == NULL) {
  61                 wpa_msg(wpa_s, MSG_INFO,
  62                         "No network configuration found for the current AP");
  63                 return -1;
  64         }
  65
  66         if (ssid->disabled) {
  67                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
  68                 return -1;
  69         }
  70
  71         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
  72                 "current AP");
  73         if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
  74                               WPA_KEY_MGMT_WPA_NONE |
  75                               WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
  76                               WPA_KEY_MGMT_PSK_SHA256 |
  77                               WPA_KEY_MGMT_IEEE8021X_SHA256)) {
  78                 u8 wpa_ie[80];
  79                 size_t wpa_ie_len = sizeof(wpa_ie);
  80                 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
  81                                           wpa_ie, &wpa_ie_len);
  82         } else {
  83                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  84         }
  85
  86         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
  87                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
  88         old_ssid = wpa_s->current_ssid;
  89         wpa_s->current_ssid = ssid;
  90         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
  91         wpa_supplicant_initiate_eapol(wpa_s);
  92         if (old_ssid != wpa_s->current_ssid)
  93                 wpas_notify_network_changed(wpa_s);
  94
  95         return 0;
  96 }
  97
  98
  99 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 100 {
 101         struct wpa_supplicant *wpa_s = eloop_ctx;
 102
 103         if (wpa_s->countermeasures) {
 104                 wpa_s->countermeasures = 0;
 105                 wpa_drv_set_countermeasures(wpa_s, 0);
 106                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 107                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 108         }
 109 }
 110
 111
 112 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 113 {
 114         int bssid_changed;
 115
 116 #ifdef CONFIG_IBSS_RSN
 117         ibss_rsn_deinit(wpa_s->ibss_rsn);
 118         wpa_s->ibss_rsn = NULL;
 119 #endif /* CONFIG_IBSS_RSN */
 120
 121 #ifdef CONFIG_AP
 122         wpa_supplicant_ap_deinit(wpa_s);
 123 #endif /* CONFIG_AP */
 124
 125         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 126                 return;
 127
 128         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 129         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 130         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 131         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 132         wpa_s->current_bss = NULL;
 133         wpa_s->assoc_freq = 0;
 134 #ifdef CONFIG_IEEE80211R
 135 #ifdef CONFIG_SME
 136         if (wpa_s->sme.ft_ies)
 137                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 138 #endif /* CONFIG_SME */
 139 #endif /* CONFIG_IEEE80211R */
 140
 141         if (bssid_changed)
 142                 wpas_notify_bssid_changed(wpa_s);
 143
 144         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 145         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 146         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 147                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 148         wpa_s->ap_ies_from_associnfo = 0;
 149 }
 150
 151
 152 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 153 {
 154         struct wpa_ie_data ie;
 155         int pmksa_set = -1;
 156         size_t i;
 157
 158         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 159             ie.pmkid == NULL)
 160                 return;
 161
 162         for (i = 0; i < ie.num_pmkid; i++) {
 163                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 164                                                     ie.pmkid + i * PMKID_LEN,
 165                                                     NULL, NULL, 0);
 166                 if (pmksa_set == 0) {
 167                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 168                         break;
 169                 }
 170         }
 171
 172         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 173                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 174 }
 175
 176
 177 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 178                                                  union wpa_event_data *data)
 179 {
 180         if (data == NULL) {
 181                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 182                         "event");
 183                 return;
 184         }
 185         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 186                 " index=%d preauth=%d",
 187                 MAC2STR(data->pmkid_candidate.bssid),
 188                 data->pmkid_candidate.index,
 189                 data->pmkid_candidate.preauth);
 190
 191         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 192                             data->pmkid_candidate.index,
 193                             data->pmkid_candidate.preauth);
 194 }
 195
 196
 197 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 198 {
 199         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 200             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 201                 return 0;
 202
 203 #ifdef IEEE8021X_EAPOL
 204         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 205             wpa_s->current_ssid &&
 206             !(wpa_s->current_ssid->eapol_flags &
 207               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 208                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 209                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 210                  * plaintext or static WEP keys). */
 211                 return 0;
 212         }
 213 #endif /* IEEE8021X_EAPOL */
 214
 215         return 1;
 216 }
 217
 218
 219 /**
 220  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 221  * @wpa_s: pointer to wpa_supplicant data
 222  * @ssid: Configuration data for the network
 223  * Returns: 0 on success, -1 on failure
 224  *
 225  * This function is called when starting authentication with a network that is
 226  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 227  */
 228 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 229                               struct wpa_ssid *ssid)
 230 {
 231 #ifdef IEEE8021X_EAPOL
 232 #ifdef PCSC_FUNCS
 233         int aka = 0, sim = 0, type;
 234
 235         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 236                 return 0;
 237
 238         if (ssid->eap.eap_methods == NULL) {
 239                 sim = 1;
 240                 aka = 1;
 241         } else {
 242                 struct eap_method_type *eap = ssid->eap.eap_methods;
 243                 while (eap->vendor != EAP_VENDOR_IETF ||
 244                        eap->method != EAP_TYPE_NONE) {
 245                         if (eap->vendor == EAP_VENDOR_IETF) {
 246                                 if (eap->method == EAP_TYPE_SIM)
 247                                         sim = 1;
 248                                 else if (eap->method == EAP_TYPE_AKA)
 249                                         aka = 1;
 250                         }
 251                         eap++;
 252                 }
 253         }
 254
 255         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 256                 sim = 0;
 257         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
 258                 aka = 0;
 259
 260         if (!sim && !aka) {
 261                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 262                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 263                         "enabled");
 264                 return 0;
 265         }
 266
 267         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 268                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 269         if (sim && aka)
 270                 type = SCARD_TRY_BOTH;
 271         else if (aka)
 272                 type = SCARD_USIM_ONLY;
 273         else
 274                 type = SCARD_GSM_SIM_ONLY;
 275
 276         wpa_s->scard = scard_init(type);
 277         if (wpa_s->scard == NULL) {
 278                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 279                         "(pcsc-lite)");
 280                 return -1;
 281         }
 282         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 283         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 284 #endif /* PCSC_FUNCS */
 285 #endif /* IEEE8021X_EAPOL */
 286
 287         return 0;
 288 }
 289
 290
 291 #ifndef CONFIG_NO_SCAN_PROCESSING
 292 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
 293                                         struct wpa_ssid *ssid)
 294 {
 295         int i, privacy = 0;
 296
 297         if (ssid->mixed_cell)
 298                 return 1;
 299
 300 #ifdef CONFIG_WPS
 301         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 302                 return 1;
 303 #endif /* CONFIG_WPS */
 304
 305         for (i = 0; i < NUM_WEP_KEYS; i++) {
 306                 if (ssid->wep_key_len[i]) {
 307                         privacy = 1;
 308                         break;
 309                 }
 310         }
 311 #ifdef IEEE8021X_EAPOL
 312         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 313             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 314                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 315                 privacy = 1;
 316 #endif /* IEEE8021X_EAPOL */
 317
 318         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 319                 privacy = 1;
 320
 321         if (bss->caps & IEEE80211_CAP_PRIVACY)
 322                 return privacy;
 323         return !privacy;
 324 }
 325
 326
 327 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 328                                          struct wpa_ssid *ssid,
 329                                          struct wpa_scan_res *bss)
 330 {
 331         struct wpa_ie_data ie;
 332         int proto_match = 0;
 333         const u8 *rsn_ie, *wpa_ie;
 334         int ret;
 335         int wep_ok;
 336
 337         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 338         if (ret >= 0)
 339                 return ret;
 340
 341         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 342         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 343                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 344                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 345                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 346
 347         rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 348         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 349                 proto_match++;
 350
 351                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 352                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 353                                 "failed");
 354                         break;
 355                 }
 356
 357                 if (wep_ok &&
 358                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 359                 {
 360                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 361                                 "in RSN IE");
 362                         return 1;
 363                 }
 364
 365                 if (!(ie.proto & ssid->proto)) {
 366                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 367                                 "mismatch");
 368                         break;
 369                 }
 370
 371                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 372                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 373                                 "cipher mismatch");
 374                         break;
 375                 }
 376
 377                 if (!(ie.group_cipher & ssid->group_cipher)) {
 378                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 379                                 "cipher mismatch");
 380                         break;
 381                 }
 382
 383                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 384                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 385                                 "mismatch");
 386                         break;
 387                 }
 388
 389 #ifdef CONFIG_IEEE80211W
 390                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 391                     ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
 392                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 393                                 "frame protection");
 394                         break;
 395                 }
 396 #endif /* CONFIG_IEEE80211W */
 397
 398                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 399                 return 1;
 400         }
 401
 402         wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 403         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 404                 proto_match++;
 405
 406                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 407                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 408                                 "failed");
 409                         break;
 410                 }
 411
 412                 if (wep_ok &&
 413                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 414                 {
 415                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 416                                 "in WPA IE");
 417                         return 1;
 418                 }
 419
 420                 if (!(ie.proto & ssid->proto)) {
 421                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 422                                 "mismatch");
 423                         break;
 424                 }
 425
 426                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 427                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 428                                 "cipher mismatch");
 429                         break;
 430                 }
 431
 432                 if (!(ie.group_cipher & ssid->group_cipher)) {
 433                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 434                                 "cipher mismatch");
 435                         break;
 436                 }
 437
 438                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 439                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 440                                 "mismatch");
 441                         break;
 442                 }
 443
 444                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 445                 return 1;
 446         }
 447
 448         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 449             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 450                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 451                 return 0;
 452         }
 453
 454         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 455                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 456                 return 1;
 457         }
 458
 459         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 460                 "WPA/WPA2");
 461
 462         return 0;
 463 }
 464
 465
 466 static int freq_allowed(int *freqs, int freq)
 467 {
 468         int i;
 469
 470         if (freqs == NULL)
 471                 return 1;
 472
 473         for (i = 0; freqs[i]; i++)
 474                 if (freqs[i] == freq)
 475                         return 1;
 476         return 0;
 477 }
 478
 479
 480 static int ht_supported(const struct hostapd_hw_modes *mode)
 481 {
 482         if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
 483                 /*
 484                  * The driver did not indicate whether it supports HT. Assume
 485                  * it does to avoid connection issues.
 486                  */
 487                 return 1;
 488         }
 489
 490         /*
 491          * IEEE Std 802.11n-2009 20.1.1:
 492          * An HT non-AP STA shall support all EQM rates for one spatial stream.
 493          */
 494         return mode->mcs_set[0] == 0xff;
 495 }
 496
 497
 498 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_scan_res *bss)
 499 {
 500         const struct hostapd_hw_modes *mode = NULL, *modes;
 501         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 502         const u8 *rate_ie;
 503         int i, j, k;
 504
 505         if (bss->freq == 0)
 506                 return 1; /* Cannot do matching without knowing band */
 507
 508         modes = wpa_s->hw.modes;
 509         if (modes == NULL) {
 510                 /*
 511                  * The driver does not provide any additional information
 512                  * about the utilized hardware, so allow the connection attempt
 513                  * to continue.
 514                  */
 515                 return 1;
 516         }
 517
 518         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 519                 for (j = 0; j < modes[i].num_channels; j++) {
 520                         int freq = modes[i].channels[j].freq;
 521                         if (freq == bss->freq) {
 522                                 if (mode &&
 523                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 524                                         break; /* do not allow 802.11b replace
 525                                                 * 802.11g */
 526                                 mode = &modes[i];
 527                                 break;
 528                         }
 529                 }
 530         }
 531
 532         if (mode == NULL)
 533                 return 0;
 534
 535         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 536                 rate_ie = wpa_scan_get_ie(bss, scan_ie[i]);
 537                 if (rate_ie == NULL)
 538                         continue;
 539
 540                 for (j = 2; j < rate_ie[1] + 2; j++) {
 541                         int flagged = !!(rate_ie[j] & 0x80);
 542                         int r = (rate_ie[j] & 0x7f) * 5;
 543
 544                         /*
 545                          * IEEE Std 802.11n-2009 7.3.2.2:
 546                          * The new BSS Membership selector value is encoded
 547                          * like a legacy basic rate, but it is not a rate and
 548                          * only indicates if the BSS members are required to
 549                          * support the mandatory features of Clause 20 [HT PHY]
 550                          * in order to join the BSS.
 551                          */
 552                         if (flagged && ((rate_ie[j] & 0x7f) ==
 553                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 554                                 if (!ht_supported(mode)) {
 555                                         wpa_dbg(wpa_s, MSG_DEBUG,
 556                                                 "   hardware does not support "
 557                                                 "HT PHY");
 558                                         return 0;
 559                                 }
 560                                 continue;
 561                         }
 562
 563                         if (!flagged)
 564                                 continue;
 565
 566                         /* check for legacy basic rates */
 567                         for (k = 0; k < mode->num_rates; k++) {
 568                                 if (mode->rates[k] == r)
 569                                         break;
 570                         }
 571                         if (k == mode->num_rates) {
 572                                 /*
 573                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 574                                  * order to join a BSS all required rates
 575                                  * have to be supported by the hardware.
 576                                  */
 577                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 578                                         "not support required rate %d.%d Mbps",
 579                                         r / 10, r % 10);
 580                                 return 0;
 581                         }
 582                 }
 583         }
 584
 585         return 1;
 586 }
 587
 588
 589 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 590                                             int i, struct wpa_scan_res *bss,
 591                                             struct wpa_ssid *group)
 592 {
 593         const u8 *ssid_;
 594         u8 wpa_ie_len, rsn_ie_len, ssid_len;
 595         int wpa;
 596         struct wpa_blacklist *e;
 597         const u8 *ie;
 598         struct wpa_ssid *ssid;
 599
 600         ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 601         ssid_ = ie ? ie + 2 : (u8 *) "";
 602         ssid_len = ie ? ie[1] : 0;
 603
 604         ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 605         wpa_ie_len = ie ? ie[1] : 0;
 606
 607         ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 608         rsn_ie_len = ie ? ie[1] : 0;
 609
 610         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 611                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
 612                 i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
 613                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 614                 wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
 615
 616         e = wpa_blacklist_get(wpa_s, bss->bssid);
 617         if (e) {
 618                 int limit = 1;
 619                 if (wpa_supplicant_enabled_networks(wpa_s->conf) == 1) {
 620                         /*
 621                          * When only a single network is enabled, we can
 622                          * trigger blacklisting on the first failure. This
 623                          * should not be done with multiple enabled networks to
 624                          * avoid getting forced to move into a worse ESS on
 625                          * single error if there are no other BSSes of the
 626                          * current ESS.
 627                          */
 628                         limit = 0;
 629                 }
 630                 if (e->count > limit) {
 631                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 632                                 "(count=%d limit=%d)", e->count, limit);
 633                         return NULL;
 634                 }
 635         }
 636
 637         if (ssid_len == 0) {
 638                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 639                 return NULL;
 640         }
 641
 642         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 643
 644         for (ssid = group; ssid; ssid = ssid->pnext) {
 645                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 646
 647                 if (ssid->disabled) {
 648                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 649                         continue;
 650                 }
 651
 652 #ifdef CONFIG_WPS
 653                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 654                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 655                                 "(WPS)");
 656                         continue;
 657                 }
 658
 659                 if (wpa && ssid->ssid_len == 0 &&
 660                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 661                         check_ssid = 0;
 662
 663                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 664                         /* Only allow wildcard SSID match if an AP
 665                          * advertises active WPS operation that matches
 666                          * with our mode. */
 667                         check_ssid = 1;
 668                         if (ssid->ssid_len == 0 &&
 669                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 670                                 check_ssid = 0;
 671                 }
 672 #endif /* CONFIG_WPS */
 673
 674                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 675                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 676                         check_ssid = 0;
 677
 678                 if (check_ssid &&
 679                     (ssid_len != ssid->ssid_len ||
 680                      os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
 681                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 682                         continue;
 683                 }
 684
 685                 if (ssid->bssid_set &&
 686                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 687                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 688                         continue;
 689                 }
 690
 691                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 692                         continue;
 693
 694                 if (!wpa &&
 695                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 696                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 697                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 698                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 699                                 "not allowed");
 700                         continue;
 701                 }
 702
 703                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 704                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 705                                 "mismatch");
 706                         continue;
 707                 }
 708
 709                 if (bss->caps & IEEE80211_CAP_IBSS) {
 710                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - IBSS (adhoc) "
 711                                 "network");
 712                         continue;
 713                 }
 714
 715                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 716                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 717                                 "allowed");
 718                         continue;
 719                 }
 720
 721                 if (!rate_match(wpa_s, bss)) {
 722                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 723                                 "not match");
 724                         continue;
 725                 }
 726
 727 #ifdef CONFIG_P2P
 728                 /*
 729                  * TODO: skip the AP if its P2P IE has Group Formation
 730                  * bit set in the P2P Group Capability Bitmap and we
 731                  * are not in Group Formation with that device.
 732                  */
 733 #endif /* CONFIG_P2P */
 734
 735                 /* Matching configuration found */
 736                 return ssid;
 737         }
 738
 739         /* No matching configuration found */
 740         return NULL;
 741 }
 742
 743
 744 static struct wpa_bss *
 745 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 746                           struct wpa_scan_results *scan_res,
 747                           struct wpa_ssid *group,
 748                           struct wpa_ssid **selected_ssid)
 749 {
 750         size_t i;
 751
 752         wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 753                 group->priority);
 754
 755         for (i = 0; i < scan_res->num; i++) {
 756                 struct wpa_scan_res *bss = scan_res->res[i];
 757                 const u8 *ie, *ssid;
 758                 u8 ssid_len;
 759
 760                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
 761                 if (!*selected_ssid)
 762                         continue;
 763
 764                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 765                 ssid = ie ? ie + 2 : (u8 *) "";
 766                 ssid_len = ie ? ie[1] : 0;
 767
 768                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 769                         " ssid='%s'",
 770                         MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
 771                 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
 772         }
 773
 774         return NULL;
 775 }
 776
 777
 778 static struct wpa_bss *
 779 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 780                             struct wpa_scan_results *scan_res,
 781                             struct wpa_ssid **selected_ssid)
 782 {
 783         struct wpa_bss *selected = NULL;
 784         int prio;
 785
 786         while (selected == NULL) {
 787                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 788                         selected = wpa_supplicant_select_bss(
 789                                 wpa_s, scan_res, wpa_s->conf->pssid[prio],
 790                                 selected_ssid);
 791                         if (selected)
 792                                 break;
 793                 }
 794
 795                 if (selected == NULL && wpa_s->blacklist) {
 796                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
 797                                 "blacklist and try again");
 798                         wpa_blacklist_clear(wpa_s);
 799                         wpa_s->blacklist_cleared++;
 800                 } else if (selected == NULL)
 801                         break;
 802         }
 803
 804         return selected;
 805 }
 806
 807
 808 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 809                                         int timeout_sec, int timeout_usec)
 810 {
 811         if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
 812                 /*
 813                  * No networks are enabled; short-circuit request so
 814                  * we don't wait timeout seconds before transitioning
 815                  * to INACTIVE state.
 816                  */
 817                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 818                 return;
 819         }
 820         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 821 }
 822
 823
 824 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 825                            struct wpa_bss *selected,
 826                            struct wpa_ssid *ssid)
 827 {
 828         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 829                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 830                         "PBC session overlap");
 831 #ifdef CONFIG_P2P
 832                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
 833                         return -1;
 834 #endif /* CONFIG_P2P */
 835
 836 #ifdef CONFIG_WPS
 837                 wpas_wps_cancel(wpa_s);
 838 #endif /* CONFIG_WPS */
 839                 return -1;
 840         }
 841
 842         /*
 843          * Do not trigger new association unless the BSSID has changed or if
 844          * reassociation is requested. If we are in process of associating with
 845          * the selected BSSID, do not trigger new attempt.
 846          */
 847         if (wpa_s->reassociate ||
 848             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 849              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
 850                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
 851               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 852               0))) {
 853                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 854                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 855                         return 0;
 856                 }
 857                 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
 858                         "reassociate: %d  selected: "MACSTR "  bssid: " MACSTR
 859                         "  pending: " MACSTR "  wpa_state: %s",
 860                         wpa_s->reassociate, MAC2STR(selected->bssid),
 861                         MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
 862                         wpa_supplicant_state_txt(wpa_s->wpa_state));
 863                 wpa_supplicant_associate(wpa_s, selected, ssid);
 864         } else {
 865                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
 866                         "selected AP");
 867         }
 868
 869         return 0;
 870 }
 871
 872
 873 static struct wpa_ssid *
 874 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 875 {
 876         int prio;
 877         struct wpa_ssid *ssid;
 878
 879         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 880                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 881                 {
 882                         if (ssid->disabled)
 883                                 continue;
 884                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 885                             ssid->mode == IEEE80211_MODE_AP)
 886                                 return ssid;
 887                 }
 888         }
 889         return NULL;
 890 }
 891
 892
 893 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 894  * on BSS added and BSS changed events */
 895 static void wpa_supplicant_rsn_preauth_scan_results(
 896         struct wpa_supplicant *wpa_s)
 897 {
 898         struct wpa_bss *bss;
 899
 900         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 901                 return;
 902
 903         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 904                 const u8 *ssid, *rsn;
 905
 906                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
 907                 if (ssid == NULL)
 908                         continue;
 909
 910                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 911                 if (rsn == NULL)
 912                         continue;
 913
 914                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
 915         }
 916
 917 }
 918
 919
 920 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
 921                                        struct wpa_bss *selected,
 922                                        struct wpa_ssid *ssid,
 923                                        struct wpa_scan_results *scan_res)
 924 {
 925         size_t i;
 926         struct wpa_scan_res *current_bss = NULL;
 927         int min_diff;
 928
 929         if (wpa_s->reassociate)
 930                 return 1; /* explicit request to reassociate */
 931         if (wpa_s->wpa_state < WPA_ASSOCIATED)
 932                 return 1; /* we are not associated; continue */
 933         if (wpa_s->current_ssid == NULL)
 934                 return 1; /* unknown current SSID */
 935         if (wpa_s->current_ssid != ssid)
 936                 return 1; /* different network block */
 937
 938         if (wpas_driver_bss_selection(wpa_s))
 939                 return 0; /* Driver-based roaming */
 940
 941         for (i = 0; i < scan_res->num; i++) {
 942                 struct wpa_scan_res *res = scan_res->res[i];
 943                 const u8 *ie;
 944                 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
 945                         continue;
 946
 947                 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 948                 if (ie == NULL)
 949                         continue;
 950                 if (ie[1] != wpa_s->current_ssid->ssid_len ||
 951                     os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
 952                         continue;
 953                 current_bss = res;
 954                 break;
 955         }
 956
 957         if (!current_bss)
 958                 return 1; /* current BSS not seen in scan results */
 959
 960         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
 961         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
 962                 MAC2STR(current_bss->bssid), current_bss->level);
 963         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
 964                 MAC2STR(selected->bssid), selected->level);
 965
 966         if (wpa_s->current_ssid->bssid_set &&
 967             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
 968             0) {
 969                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
 970                         "has preferred BSSID");
 971                 return 1;
 972         }
 973
 974         min_diff = 2;
 975         if (current_bss->level < 0) {
 976                 if (current_bss->level < -85)
 977                         min_diff = 1;
 978                 else if (current_bss->level < -80)
 979                         min_diff = 2;
 980                 else if (current_bss->level < -75)
 981                         min_diff = 3;
 982                 else if (current_bss->level < -70)
 983                         min_diff = 4;
 984                 else
 985                         min_diff = 5;
 986         }
 987         if (abs(current_bss->level - selected->level) < min_diff) {
 988                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
 989                         "in signal level");
 990                 return 0;
 991         }
 992
 993         return 1;
 994 }
 995
 996 /* Return < 0 if no scan results could be fetched. */
 997 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 998                                               union wpa_event_data *data)
 999 {
1000         struct wpa_bss *selected;
1001         struct wpa_ssid *ssid = NULL;
1002         struct wpa_scan_results *scan_res;
1003         int ap = 0;
1004
1005 #ifdef CONFIG_AP
1006         if (wpa_s->ap_iface)
1007                 ap = 1;
1008 #endif /* CONFIG_AP */
1009
1010         wpa_supplicant_notify_scanning(wpa_s, 0);
1011
1012         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1013                                                    data ? &data->scan_info :
1014                                                    NULL, 1);
1015         if (scan_res == NULL) {
1016                 if (wpa_s->conf->ap_scan == 2 || ap)
1017                         return -1;
1018                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1019                         "scanning again");
1020                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1021                 return -1;
1022         }
1023
1024 #ifndef CONFIG_NO_RANDOM_POOL
1025         size_t i, num;
1026         num = scan_res->num;
1027         if (num > 10)
1028                 num = 10;
1029         for (i = 0; i < num; i++) {
1030                 u8 buf[5];
1031                 struct wpa_scan_res *res = scan_res->res[i];
1032                 buf[0] = res->bssid[5];
1033                 buf[1] = res->qual & 0xff;
1034                 buf[2] = res->noise & 0xff;
1035                 buf[3] = res->level & 0xff;
1036                 buf[4] = res->tsf & 0xff;
1037                 random_add_randomness(buf, sizeof(buf));
1038         }
1039 #endif /* CONFIG_NO_RANDOM_POOL */
1040
1041         if (wpa_s->scan_res_handler) {
1042                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1043                                          struct wpa_scan_results *scan_res);
1044
1045                 scan_res_handler = wpa_s->scan_res_handler;
1046                 wpa_s->scan_res_handler = NULL;
1047                 scan_res_handler(wpa_s, scan_res);
1048
1049                 wpa_scan_results_free(scan_res);
1050                 return 0;
1051         }
1052
1053         if (ap) {
1054                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1055 #ifdef CONFIG_AP
1056                 if (wpa_s->ap_iface->scan_cb)
1057                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1058 #endif /* CONFIG_AP */
1059                 wpa_scan_results_free(scan_res);
1060                 return 0;
1061         }
1062
1063         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
1064         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1065         wpas_notify_scan_results(wpa_s);
1066
1067         wpas_notify_scan_done(wpa_s, 1);
1068
1069         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
1070                 wpa_scan_results_free(scan_res);
1071                 return 0;
1072         }
1073
1074         if (wpa_s->disconnected) {
1075                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1076                 wpa_scan_results_free(scan_res);
1077                 return 0;
1078         }
1079
1080         if (!wpas_driver_bss_selection(wpa_s) &&
1081             bgscan_notify_scan(wpa_s, scan_res) == 1) {
1082                 wpa_scan_results_free(scan_res);
1083                 return 0;
1084         }
1085
1086         selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
1087
1088         if (selected) {
1089                 int skip;
1090                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
1091                                                     scan_res);
1092                 wpa_scan_results_free(scan_res);
1093                 if (skip) {
1094                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1095                         return 0;
1096                 }
1097
1098                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1099                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1100                         return -1;
1101                 }
1102                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1103         } else {
1104                 wpa_scan_results_free(scan_res);
1105                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1106                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1107                 if (ssid) {
1108                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1109                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1110                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1111                 } else {
1112                         int timeout_sec = wpa_s->scan_interval;
1113                         int timeout_usec = 0;
1114 #ifdef CONFIG_P2P
1115                         if (wpa_s->p2p_in_provisioning) {
1116                                 /*
1117                                  * Use shorter wait during P2P Provisioning
1118                                  * state to speed up group formation.
1119                                  */
1120                                 timeout_sec = 0;
1121                                 timeout_usec = 250000;
1122                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1123                                                             timeout_usec);
1124                                 return 0;
1125                         }
1126 #endif /* CONFIG_P2P */
1127                         if (wpa_supplicant_req_sched_scan(wpa_s))
1128                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1129                                                             timeout_usec);
1130                 }
1131         }
1132         return 0;
1133 }
1134
1135
1136 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1137                                               union wpa_event_data *data)
1138 {
1139         const char *rn, *rn2;
1140         struct wpa_supplicant *ifs;
1141
1142         if (_wpa_supplicant_event_scan_results(wpa_s, data) < 0) {
1143                 /*
1144                  * If no scan results could be fetched, then no need to
1145                  * notify those interfaces that did not actually request
1146                  * this scan.
1147                  */
1148                 return;
1149         }
1150
1151         /*
1152          * Check other interfaces to see if they have the same radio-name. If
1153          * so, they get updated with this same scan info.
1154          */
1155         if (!wpa_s->driver->get_radio_name)
1156                 return;
1157
1158         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1159         if (rn == NULL || rn[0] == '\0')
1160                 return;
1161
1162         wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1163                 "sharing same radio (%s) in event_scan_results", rn);
1164
1165         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1166                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1167                         continue;
1168
1169                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1170                 if (rn2 && os_strcmp(rn, rn2) == 0) {
1171                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1172                                    "sibling", ifs->ifname);
1173                         _wpa_supplicant_event_scan_results(ifs, data);
1174                 }
1175         }
1176 }
1177
1178 #endif /* CONFIG_NO_SCAN_PROCESSING */
1179
1180
1181 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1182                                           union wpa_event_data *data)
1183 {
1184         int l, len, found = 0, wpa_found, rsn_found;
1185         const u8 *p;
1186
1187         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1188         if (data->assoc_info.req_ies)
1189                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1190                             data->assoc_info.req_ies_len);
1191         if (data->assoc_info.resp_ies) {
1192                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1193                             data->assoc_info.resp_ies_len);
1194 #ifdef CONFIG_TDLS
1195                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1196                                         data->assoc_info.resp_ies_len);
1197 #endif /* CONFIG_TDLS */
1198         }
1199         if (data->assoc_info.beacon_ies)
1200                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1201                             data->assoc_info.beacon_ies,
1202                             data->assoc_info.beacon_ies_len);
1203         if (data->assoc_info.freq)
1204                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1205                         data->assoc_info.freq);
1206
1207         p = data->assoc_info.req_ies;
1208         l = data->assoc_info.req_ies_len;
1209
1210         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1211         while (p && l >= 2) {
1212                 len = p[1] + 2;
1213                 if (len > l) {
1214                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1215                                     p, l);
1216                         break;
1217                 }
1218                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1219                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1220                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1221                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1222                                 break;
1223                         found = 1;
1224                         wpa_find_assoc_pmkid(wpa_s);
1225                         break;
1226                 }
1227                 l -= len;
1228                 p += len;
1229         }
1230         if (!found && data->assoc_info.req_ies)
1231                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1232
1233 #ifdef CONFIG_IEEE80211R
1234 #ifdef CONFIG_SME
1235         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1236                 u8 bssid[ETH_ALEN];
1237                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1238                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1239                                                  data->assoc_info.resp_ies,
1240                                                  data->assoc_info.resp_ies_len,
1241                                                  bssid) < 0) {
1242                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1243                                 "Reassociation Response failed");
1244                         wpa_supplicant_deauthenticate(
1245                                 wpa_s, WLAN_REASON_INVALID_IE);
1246                         return -1;
1247                 }
1248         }
1249
1250         p = data->assoc_info.resp_ies;
1251         l = data->assoc_info.resp_ies_len;
1252
1253 #ifdef CONFIG_WPS_STRICT
1254         if (p && wpa_s->current_ssid &&
1255             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1256                 struct wpabuf *wps;
1257                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1258                 if (wps == NULL) {
1259                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1260                                 "include WPS IE in (Re)Association Response");
1261                         return -1;
1262                 }
1263
1264                 if (wps_validate_assoc_resp(wps) < 0) {
1265                         wpabuf_free(wps);
1266                         wpa_supplicant_deauthenticate(
1267                                 wpa_s, WLAN_REASON_INVALID_IE);
1268                         return -1;
1269                 }
1270                 wpabuf_free(wps);
1271         }
1272 #endif /* CONFIG_WPS_STRICT */
1273
1274         /* Go through the IEs and make a copy of the MDIE, if present. */
1275         while (p && l >= 2) {
1276                 len = p[1] + 2;
1277                 if (len > l) {
1278                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1279                                     p, l);
1280                         break;
1281                 }
1282                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1283                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1284                         wpa_s->sme.ft_used = 1;
1285                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1286                                   MOBILITY_DOMAIN_ID_LEN);
1287                         break;
1288                 }
1289                 l -= len;
1290                 p += len;
1291         }
1292 #endif /* CONFIG_SME */
1293
1294         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1295                              data->assoc_info.resp_ies_len);
1296 #endif /* CONFIG_IEEE80211R */
1297
1298         /* WPA/RSN IE from Beacon/ProbeResp */
1299         p = data->assoc_info.beacon_ies;
1300         l = data->assoc_info.beacon_ies_len;
1301
1302         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1303          */
1304         wpa_found = rsn_found = 0;
1305         while (p && l >= 2) {
1306                 len = p[1] + 2;
1307                 if (len > l) {
1308                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1309                                     p, l);
1310                         break;
1311                 }
1312                 if (!wpa_found &&
1313                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1314                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1315                         wpa_found = 1;
1316                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1317                 }
1318
1319                 if (!rsn_found &&
1320                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1321                         rsn_found = 1;
1322                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1323                 }
1324
1325                 l -= len;
1326                 p += len;
1327         }
1328
1329         if (!wpa_found && data->assoc_info.beacon_ies)
1330                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1331         if (!rsn_found && data->assoc_info.beacon_ies)
1332                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1333         if (wpa_found || rsn_found)
1334                 wpa_s->ap_ies_from_associnfo = 1;
1335
1336         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1337             wpa_s->assoc_freq != data->assoc_info.freq) {
1338                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1339                            "%u to %u MHz",
1340                            wpa_s->assoc_freq, data->assoc_info.freq);
1341                 wpa_supplicant_update_scan_results(wpa_s);
1342         }
1343
1344         wpa_s->assoc_freq = data->assoc_info.freq;
1345
1346         return 0;
1347 }
1348
1349
1350 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1351                                        union wpa_event_data *data)
1352 {
1353         u8 bssid[ETH_ALEN];
1354         int ft_completed;
1355         int bssid_changed;
1356         struct wpa_driver_capa capa;
1357
1358 #ifdef CONFIG_AP
1359         if (wpa_s->ap_iface) {
1360                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1361                                     data->assoc_info.addr,
1362                                     data->assoc_info.req_ies,
1363                                     data->assoc_info.req_ies_len,
1364                                     data->assoc_info.reassoc);
1365                 return;
1366         }
1367 #endif /* CONFIG_AP */
1368
1369         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1370         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1371                 return;
1372
1373         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1374         if (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1375             os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1376                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1377                         MACSTR, MAC2STR(bssid));
1378                 random_add_randomness(bssid, ETH_ALEN);
1379                 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1380                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1381                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1382                 if (bssid_changed)
1383                         wpas_notify_bssid_changed(wpa_s);
1384
1385                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1386                         wpa_clear_keys(wpa_s, bssid);
1387                 }
1388                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1389                         wpa_supplicant_disassociate(
1390                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1391                         return;
1392                 }
1393                 if (wpa_s->current_ssid) {
1394                         struct wpa_bss *bss = NULL;
1395                         struct wpa_ssid *ssid = wpa_s->current_ssid;
1396                         if (ssid->ssid_len > 0)
1397                                 bss = wpa_bss_get(wpa_s, bssid,
1398                                                   ssid->ssid, ssid->ssid_len);
1399                         if (!bss)
1400                                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1401                         if (bss)
1402                                 wpa_s->current_bss = bss;
1403                 }
1404         }
1405
1406 #ifdef CONFIG_SME
1407         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1408         wpa_s->sme.prev_bssid_set = 1;
1409 #endif /* CONFIG_SME */
1410
1411         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1412         if (wpa_s->current_ssid) {
1413                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1414                  * initialized before association, but for other modes,
1415                  * initialize PC/SC here, if the current configuration needs
1416                  * smartcard or SIM/USIM. */
1417                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1418         }
1419         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1420         if (wpa_s->l2)
1421                 l2_packet_notify_auth_start(wpa_s->l2);
1422
1423         /*
1424          * Set portEnabled first to FALSE in order to get EAP state machine out
1425          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1426          * state machine may transit to AUTHENTICATING state based on obsolete
1427          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1428          * AUTHENTICATED without ever giving chance to EAP state machine to
1429          * reset the state.
1430          */
1431         if (!ft_completed) {
1432                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1433                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1434         }
1435         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1436                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1437         /* 802.1X::portControl = Auto */
1438         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1439         wpa_s->eapol_received = 0;
1440         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1441             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1442             (wpa_s->current_ssid &&
1443              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1444                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1445                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1446         } else if (!ft_completed) {
1447                 /* Timeout for receiving the first EAPOL packet */
1448                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1449         }
1450         wpa_supplicant_cancel_scan(wpa_s);
1451
1452         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1453             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1454                 /*
1455                  * We are done; the driver will take care of RSN 4-way
1456                  * handshake.
1457                  */
1458                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1459                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1460                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1461                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1462         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1463                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1464                 /*
1465                  * The driver will take care of RSN 4-way handshake, so we need
1466                  * to allow EAPOL supplicant to complete its work without
1467                  * waiting for WPA supplicant.
1468                  */
1469                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1470         } else if (ft_completed) {
1471                 /*
1472                  * FT protocol completed - make sure EAPOL state machine ends
1473                  * up in authenticated.
1474                  */
1475                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1476                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1477                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1478                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1479         }
1480
1481         if (wpa_s->pending_eapol_rx) {
1482                 struct os_time now, age;
1483                 os_get_time(&now);
1484                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1485                 if (age.sec == 0 && age.usec < 100000 &&
1486                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1487                     0) {
1488                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1489                                 "frame that was received just before "
1490                                 "association notification");
1491                         wpa_supplicant_rx_eapol(
1492                                 wpa_s, wpa_s->pending_eapol_rx_src,
1493                                 wpabuf_head(wpa_s->pending_eapol_rx),
1494                                 wpabuf_len(wpa_s->pending_eapol_rx));
1495                 }
1496                 wpabuf_free(wpa_s->pending_eapol_rx);
1497                 wpa_s->pending_eapol_rx = NULL;
1498         }
1499
1500         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1501              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1502             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1503             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1504                 /* Set static WEP keys again */
1505                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1506         }
1507
1508 #ifdef CONFIG_IBSS_RSN
1509         if (wpa_s->current_ssid &&
1510             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1511             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1512             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1513             wpa_s->ibss_rsn == NULL) {
1514                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1515                 if (!wpa_s->ibss_rsn) {
1516                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1517                         wpa_supplicant_deauthenticate(
1518                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1519                         return;
1520                 }
1521
1522                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1523         }
1524 #endif /* CONFIG_IBSS_RSN */
1525 }
1526
1527
1528 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1529                                           u16 reason_code)
1530 {
1531         const u8 *bssid;
1532         int authenticating;
1533         u8 prev_pending_bssid[ETH_ALEN];
1534
1535         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1536         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1537
1538         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1539                 /*
1540                  * At least Host AP driver and a Prism3 card seemed to be
1541                  * generating streams of disconnected events when configuring
1542                  * IBSS for WPA-None. Ignore them for now.
1543                  */
1544                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1545                         "IBSS/WPA-None mode");
1546                 return;
1547         }
1548
1549         if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1550             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1551                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1552                         "pre-shared key may be incorrect");
1553         }
1554         if (!wpa_s->auto_reconnect_disabled ||
1555             wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1556                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect enabled: try to "
1557                         "reconnect (wps=%d)",
1558                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS);
1559                 if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1560                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1561         } else {
1562                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect disabled: do not "
1563                         "try to re-connect");
1564                 wpa_s->reassociate = 0;
1565                 wpa_s->disconnected = 1;
1566         }
1567         bssid = wpa_s->bssid;
1568         if (is_zero_ether_addr(bssid))
1569                 bssid = wpa_s->pending_bssid;
1570         wpas_connection_failed(wpa_s, bssid);
1571         wpa_sm_notify_disassoc(wpa_s->wpa);
1572         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1573                 " reason=%d",
1574                 MAC2STR(bssid), reason_code);
1575         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1576                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1577                 wpa_s->keys_cleared = 0;
1578                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1579         }
1580         wpa_supplicant_mark_disassoc(wpa_s);
1581
1582         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1583                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
1584 }
1585
1586
1587 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1588 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
1589 {
1590         struct wpa_supplicant *wpa_s = eloop_ctx;
1591
1592         if (!wpa_s->pending_mic_error_report)
1593                 return;
1594
1595         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
1596         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1597         wpa_s->pending_mic_error_report = 0;
1598 }
1599 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1600
1601
1602 static void
1603 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1604                                          union wpa_event_data *data)
1605 {
1606         int pairwise;
1607         struct os_time t;
1608
1609         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1610         pairwise = (data && data->michael_mic_failure.unicast);
1611         os_get_time(&t);
1612         if ((wpa_s->last_michael_mic_error &&
1613              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1614             wpa_s->pending_mic_error_report) {
1615                 if (wpa_s->pending_mic_error_report) {
1616                         /*
1617                          * Send the pending MIC error report immediately since
1618                          * we are going to start countermeasures and AP better
1619                          * do the same.
1620                          */
1621                         wpa_sm_key_request(wpa_s->wpa, 1,
1622                                            wpa_s->pending_mic_error_pairwise);
1623                 }
1624
1625                 /* Send the new MIC error report immediately since we are going
1626                  * to start countermeasures and AP better do the same.
1627                  */
1628                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1629
1630                 /* initialize countermeasures */
1631                 wpa_s->countermeasures = 1;
1632                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1633
1634                 /*
1635                  * Need to wait for completion of request frame. We do not get
1636                  * any callback for the message completion, so just wait a
1637                  * short while and hope for the best. */
1638                 os_sleep(0, 10000);
1639
1640                 wpa_drv_set_countermeasures(wpa_s, 1);
1641                 wpa_supplicant_deauthenticate(wpa_s,
1642                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
1643                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1644                                      wpa_s, NULL);
1645                 eloop_register_timeout(60, 0,
1646                                        wpa_supplicant_stop_countermeasures,
1647                                        wpa_s, NULL);
1648                 /* TODO: mark the AP rejected for 60 second. STA is
1649                  * allowed to associate with another AP.. */
1650         } else {
1651 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1652                 if (wpa_s->mic_errors_seen) {
1653                         /*
1654                          * Reduce the effectiveness of Michael MIC error
1655                          * reports as a means for attacking against TKIP if
1656                          * more than one MIC failure is noticed with the same
1657                          * PTK. We delay the transmission of the reports by a
1658                          * random time between 0 and 60 seconds in order to
1659                          * force the attacker wait 60 seconds before getting
1660                          * the information on whether a frame resulted in a MIC
1661                          * failure.
1662                          */
1663                         u8 rval[4];
1664                         int sec;
1665
1666                         if (os_get_random(rval, sizeof(rval)) < 0)
1667                                 sec = os_random() % 60;
1668                         else
1669                                 sec = WPA_GET_BE32(rval) % 60;
1670                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
1671                                 "report %d seconds", sec);
1672                         wpa_s->pending_mic_error_report = 1;
1673                         wpa_s->pending_mic_error_pairwise = pairwise;
1674                         eloop_cancel_timeout(
1675                                 wpa_supplicant_delayed_mic_error_report,
1676                                 wpa_s, NULL);
1677                         eloop_register_timeout(
1678                                 sec, os_random() % 1000000,
1679                                 wpa_supplicant_delayed_mic_error_report,
1680                                 wpa_s, NULL);
1681                 } else {
1682                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1683                 }
1684 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1685                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1686 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1687         }
1688         wpa_s->last_michael_mic_error = t.sec;
1689         wpa_s->mic_errors_seen++;
1690 }
1691
1692
1693 #ifdef CONFIG_TERMINATE_ONLASTIF
1694 static int any_interfaces(struct wpa_supplicant *head)
1695 {
1696         struct wpa_supplicant *wpa_s;
1697
1698         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1699                 if (!wpa_s->interface_removed)
1700                         return 1;
1701         return 0;
1702 }
1703 #endif /* CONFIG_TERMINATE_ONLASTIF */
1704
1705
1706 static void
1707 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1708                                       union wpa_event_data *data)
1709 {
1710         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1711                 return;
1712
1713         switch (data->interface_status.ievent) {
1714         case EVENT_INTERFACE_ADDED:
1715                 if (!wpa_s->interface_removed)
1716                         break;
1717                 wpa_s->interface_removed = 0;
1718                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
1719                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1720                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
1721                                 "driver after interface was added");
1722                 }
1723                 break;
1724         case EVENT_INTERFACE_REMOVED:
1725                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
1726                 wpa_s->interface_removed = 1;
1727                 wpa_supplicant_mark_disassoc(wpa_s);
1728                 l2_packet_deinit(wpa_s->l2);
1729                 wpa_s->l2 = NULL;
1730 #ifdef CONFIG_IBSS_RSN
1731                 ibss_rsn_deinit(wpa_s->ibss_rsn);
1732                 wpa_s->ibss_rsn = NULL;
1733 #endif /* CONFIG_IBSS_RSN */
1734 #ifdef CONFIG_TERMINATE_ONLASTIF
1735                 /* check if last interface */
1736                 if (!any_interfaces(wpa_s->global->ifaces))
1737                         eloop_terminate();
1738 #endif /* CONFIG_TERMINATE_ONLASTIF */
1739                 break;
1740         }
1741 }
1742
1743
1744 #ifdef CONFIG_PEERKEY
1745 static void
1746 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1747                               union wpa_event_data *data)
1748 {
1749         if (data == NULL)
1750                 return;
1751         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1752 }
1753 #endif /* CONFIG_PEERKEY */
1754
1755
1756 #ifdef CONFIG_TDLS
1757 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
1758                                       union wpa_event_data *data)
1759 {
1760         if (data == NULL)
1761                 return;
1762         switch (data->tdls.oper) {
1763         case TDLS_REQUEST_SETUP:
1764                 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
1765                 break;
1766         case TDLS_REQUEST_TEARDOWN:
1767                 wpa_tdls_send_teardown(wpa_s->wpa, data->tdls.peer,
1768                                        data->tdls.reason_code);
1769                 break;
1770         }
1771 }
1772 #endif /* CONFIG_TDLS */
1773
1774
1775 #ifdef CONFIG_IEEE80211R
1776 static void
1777 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1778                                  union wpa_event_data *data)
1779 {
1780         if (data == NULL)
1781                 return;
1782
1783         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1784                                     data->ft_ies.ies_len,
1785                                     data->ft_ies.ft_action,
1786                                     data->ft_ies.target_ap,
1787                                     data->ft_ies.ric_ies,
1788                                     data->ft_ies.ric_ies_len) < 0) {
1789                 /* TODO: prevent MLME/driver from trying to associate? */
1790         }
1791 }
1792 #endif /* CONFIG_IEEE80211R */
1793
1794
1795 #ifdef CONFIG_IBSS_RSN
1796 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1797                                                 union wpa_event_data *data)
1798 {
1799         struct wpa_ssid *ssid;
1800         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1801                 return;
1802         if (data == NULL)
1803                 return;
1804         ssid = wpa_s->current_ssid;
1805         if (ssid == NULL)
1806                 return;
1807         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
1808                 return;
1809
1810         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1811 }
1812 #endif /* CONFIG_IBSS_RSN */
1813
1814
1815 #ifdef CONFIG_IEEE80211R
1816 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1817                          size_t len)
1818 {
1819         const u8 *sta_addr, *target_ap_addr;
1820         u16 status;
1821
1822         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1823         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1824                 return; /* only SME case supported for now */
1825         if (len < 1 + 2 * ETH_ALEN + 2)
1826                 return;
1827         if (data[0] != 2)
1828                 return; /* Only FT Action Response is supported for now */
1829         sta_addr = data + 1;
1830         target_ap_addr = data + 1 + ETH_ALEN;
1831         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1832         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
1833                 MACSTR " TargetAP " MACSTR " status %u",
1834                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1835
1836         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1837                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1838                         " in FT Action Response", MAC2STR(sta_addr));
1839                 return;
1840         }
1841
1842         if (status) {
1843                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
1844                         "failure (status code %d)", status);
1845                 /* TODO: report error to FT code(?) */
1846                 return;
1847         }
1848
1849         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1850                                     len - (1 + 2 * ETH_ALEN + 2), 1,
1851                                     target_ap_addr, NULL, 0) < 0)
1852                 return;
1853
1854 #ifdef CONFIG_SME
1855         {
1856                 struct wpa_bss *bss;
1857                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1858                 if (bss)
1859                         wpa_s->sme.freq = bss->freq;
1860                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1861                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1862                               WLAN_AUTH_FT);
1863         }
1864 #endif /* CONFIG_SME */
1865 }
1866 #endif /* CONFIG_IEEE80211R */
1867
1868
1869 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
1870                                                struct unprot_deauth *e)
1871 {
1872 #ifdef CONFIG_IEEE80211W
1873         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
1874                    "dropped: " MACSTR " -> " MACSTR
1875                    " (reason code %u)",
1876                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1877         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1878 #endif /* CONFIG_IEEE80211W */
1879 }
1880
1881
1882 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
1883                                                  struct unprot_disassoc *e)
1884 {
1885 #ifdef CONFIG_IEEE80211W
1886         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
1887                    "dropped: " MACSTR " -> " MACSTR
1888                    " (reason code %u)",
1889                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1890         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1891 #endif /* CONFIG_IEEE80211W */
1892 }
1893
1894
1895 static void wnm_action_rx(struct wpa_supplicant *wpa_s, struct rx_action *rx)
1896 {
1897         u8 action, mode;
1898         const u8 *pos, *end;
1899
1900         if (rx->data == NULL || rx->len == 0)
1901                 return;
1902
1903         pos = rx->data;
1904         end = pos + rx->len;
1905         action = *pos++;
1906
1907         wpa_printf(MSG_DEBUG, "WNM: RX action %u from " MACSTR,
1908                    action, MAC2STR(rx->sa));
1909         switch (action) {
1910         case WNM_BSS_TRANS_MGMT_REQ:
1911                 if (pos + 5 > end)
1912                         break;
1913                 wpa_printf(MSG_DEBUG, "WNM: BSS Transition Management "
1914                            "Request: dialog_token=%u request_mode=0x%x "
1915                            "disassoc_timer=%u validity_interval=%u",
1916                            pos[0], pos[1], WPA_GET_LE16(pos + 2), pos[4]);
1917                 mode = pos[1];
1918                 pos += 5;
1919                 if (mode & 0x08)
1920                         pos += 12; /* BSS Termination Duration */
1921                 if (mode & 0x10) {
1922                         char url[256];
1923                         if (pos + 1 > end || pos + 1 + pos[0] > end) {
1924                                 wpa_printf(MSG_DEBUG, "WNM: Invalid BSS "
1925                                            "Transition Management Request "
1926                                            "(URL)");
1927                                 break;
1928                         }
1929                         os_memcpy(url, pos + 1, pos[0]);
1930                         url[pos[0]] = '\0';
1931                         wpa_msg(wpa_s, MSG_INFO, "WNM: ESS Disassociation "
1932                                 "Imminent - session_info_url=%s", url);
1933                 }
1934                 break;
1935         }
1936 }
1937
1938
1939 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1940                           union wpa_event_data *data)
1941 {
1942         struct wpa_supplicant *wpa_s = ctx;
1943         u16 reason_code = 0;
1944
1945         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
1946             event != EVENT_INTERFACE_ENABLED &&
1947             event != EVENT_INTERFACE_STATUS) {
1948                 wpa_dbg(wpa_s, MSG_DEBUG,
1949                         "Ignore event %s (%d) while interface is disabled",
1950                         event_to_string(event), event);
1951                 return;
1952         }
1953
1954         wpa_dbg(wpa_s, MSG_DEBUG, "Event %s (%d) received",
1955                 event_to_string(event), event);
1956
1957         switch (event) {
1958         case EVENT_AUTH:
1959                 sme_event_auth(wpa_s, data);
1960                 break;
1961         case EVENT_ASSOC:
1962                 wpa_supplicant_event_assoc(wpa_s, data);
1963                 break;
1964         case EVENT_DISASSOC:
1965                 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
1966                 if (data) {
1967                         wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1968                                 data->disassoc_info.reason_code);
1969                         if (data->disassoc_info.addr)
1970                                 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
1971                                         MAC2STR(data->disassoc_info.addr));
1972                 }
1973 #ifdef CONFIG_AP
1974                 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
1975                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1976                                                data->disassoc_info.addr);
1977                         break;
1978                 }
1979 #endif /* CONFIG_AP */
1980                 if (data) {
1981                         reason_code = data->disassoc_info.reason_code;
1982                         wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
1983                                     data->disassoc_info.ie,
1984                                     data->disassoc_info.ie_len);
1985 #ifdef CONFIG_P2P
1986                         wpas_p2p_disassoc_notif(
1987                                 wpa_s, data->disassoc_info.addr, reason_code,
1988                                 data->disassoc_info.ie,
1989                                 data->disassoc_info.ie_len);
1990 #endif /* CONFIG_P2P */
1991                 }
1992                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1993                         sme_event_disassoc(wpa_s, data);
1994                 /* fall through */
1995         case EVENT_DEAUTH:
1996                 if (event == EVENT_DEAUTH) {
1997                         wpa_dbg(wpa_s, MSG_DEBUG,
1998                                 "Deauthentication notification");
1999                         if (data) {
2000                                 reason_code = data->deauth_info.reason_code;
2001                                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
2002                                         data->deauth_info.reason_code);
2003                                 if (data->deauth_info.addr) {
2004                                         wpa_dbg(wpa_s, MSG_DEBUG, " * address "
2005                                                 MACSTR,
2006                                                 MAC2STR(data->deauth_info.
2007                                                         addr));
2008                                 }
2009                                 wpa_hexdump(MSG_DEBUG,
2010                                             "Deauthentication frame IE(s)",
2011                                             data->deauth_info.ie,
2012                                             data->deauth_info.ie_len);
2013 #ifdef CONFIG_P2P
2014                                 wpas_p2p_deauth_notif(
2015                                         wpa_s, data->deauth_info.addr,
2016                                         reason_code,
2017                                         data->deauth_info.ie,
2018                                         data->deauth_info.ie_len);
2019 #endif /* CONFIG_P2P */
2020                         }
2021                 }
2022 #ifdef CONFIG_AP
2023                 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
2024                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2025                                                data->deauth_info.addr);
2026                         break;
2027                 }
2028 #endif /* CONFIG_AP */
2029                 wpa_supplicant_event_disassoc(wpa_s, reason_code);
2030                 break;
2031         case EVENT_MICHAEL_MIC_FAILURE:
2032                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2033                 break;
2034 #ifndef CONFIG_NO_SCAN_PROCESSING
2035         case EVENT_SCAN_RESULTS:
2036                 wpa_supplicant_event_scan_results(wpa_s, data);
2037                 break;
2038 #endif /* CONFIG_NO_SCAN_PROCESSING */
2039         case EVENT_ASSOCINFO:
2040                 wpa_supplicant_event_associnfo(wpa_s, data);
2041                 break;
2042         case EVENT_INTERFACE_STATUS:
2043                 wpa_supplicant_event_interface_status(wpa_s, data);
2044                 break;
2045         case EVENT_PMKID_CANDIDATE:
2046                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2047                 break;
2048 #ifdef CONFIG_PEERKEY
2049         case EVENT_STKSTART:
2050                 wpa_supplicant_event_stkstart(wpa_s, data);
2051                 break;
2052 #endif /* CONFIG_PEERKEY */
2053 #ifdef CONFIG_TDLS
2054         case EVENT_TDLS:
2055                 wpa_supplicant_event_tdls(wpa_s, data);
2056                 break;
2057 #endif /* CONFIG_TDLS */
2058 #ifdef CONFIG_IEEE80211R
2059         case EVENT_FT_RESPONSE:
2060                 wpa_supplicant_event_ft_response(wpa_s, data);
2061                 break;
2062 #endif /* CONFIG_IEEE80211R */
2063 #ifdef CONFIG_IBSS_RSN
2064         case EVENT_IBSS_RSN_START:
2065                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2066                 break;
2067 #endif /* CONFIG_IBSS_RSN */
2068         case EVENT_ASSOC_REJECT:
2069                 if (data->assoc_reject.bssid)
2070                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2071                                 "bssid=" MACSTR " status_code=%u",
2072                                 MAC2STR(data->assoc_reject.bssid),
2073                                 data->assoc_reject.status_code);
2074                 else
2075                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2076                                 "status_code=%u",
2077                                 data->assoc_reject.status_code);
2078                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2079                         sme_event_assoc_reject(wpa_s, data);
2080                 break;
2081         case EVENT_AUTH_TIMED_OUT:
2082                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2083                         sme_event_auth_timed_out(wpa_s, data);
2084                 break;
2085         case EVENT_ASSOC_TIMED_OUT:
2086                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2087                         sme_event_assoc_timed_out(wpa_s, data);
2088                 break;
2089         case EVENT_TX_STATUS:
2090                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2091                         " type=%d stype=%d",
2092                         MAC2STR(data->tx_status.dst),
2093                         data->tx_status.type, data->tx_status.stype);
2094 #ifdef CONFIG_AP
2095                 if (wpa_s->ap_iface == NULL) {
2096 #ifdef CONFIG_OFFCHANNEL
2097                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2098                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2099                                 offchannel_send_action_tx_status(
2100                                         wpa_s, data->tx_status.dst,
2101                                         data->tx_status.data,
2102                                         data->tx_status.data_len,
2103                                         data->tx_status.ack ?
2104                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
2105                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
2106 #endif /* CONFIG_OFFCHANNEL */
2107                         break;
2108                 }
2109 #endif /* CONFIG_AP */
2110 #ifdef CONFIG_OFFCHANNEL
2111                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2112                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2113                 /*
2114                  * Catch TX status events for Action frames we sent via group
2115                  * interface in GO mode.
2116                  */
2117                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2118                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2119                     os_memcmp(wpa_s->parent->pending_action_dst,
2120                               data->tx_status.dst, ETH_ALEN) == 0) {
2121                         offchannel_send_action_tx_status(
2122                                 wpa_s->parent, data->tx_status.dst,
2123                                 data->tx_status.data,
2124                                 data->tx_status.data_len,
2125                                 data->tx_status.ack ?
2126                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
2127                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
2128                         break;
2129                 }
2130 #endif /* CONFIG_OFFCHANNEL */
2131 #ifdef CONFIG_AP
2132                 switch (data->tx_status.type) {
2133                 case WLAN_FC_TYPE_MGMT:
2134                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2135                                       data->tx_status.data_len,
2136                                       data->tx_status.stype,
2137                                       data->tx_status.ack);
2138                         break;
2139                 case WLAN_FC_TYPE_DATA:
2140                         ap_tx_status(wpa_s, data->tx_status.dst,
2141                                      data->tx_status.data,
2142                                      data->tx_status.data_len,
2143                                      data->tx_status.ack);
2144                         break;
2145                 }
2146 #endif /* CONFIG_AP */
2147                 break;
2148 #ifdef CONFIG_AP
2149         case EVENT_DRIVER_CLIENT_POLL_OK:
2150                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
2151                 break;
2152         case EVENT_RX_FROM_UNKNOWN:
2153                 if (wpa_s->ap_iface == NULL)
2154                         break;
2155                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
2156                                        data->rx_from_unknown.wds);
2157                 break;
2158         case EVENT_RX_MGMT:
2159                 if (wpa_s->ap_iface == NULL) {
2160 #ifdef CONFIG_P2P
2161                         u16 fc, stype;
2162                         const struct ieee80211_mgmt *mgmt;
2163                         mgmt = (const struct ieee80211_mgmt *)
2164                                 data->rx_mgmt.frame;
2165                         fc = le_to_host16(mgmt->frame_control);
2166                         stype = WLAN_FC_GET_STYPE(fc);
2167                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2168                             data->rx_mgmt.frame_len > 24) {
2169                                 const u8 *src = mgmt->sa;
2170                                 const u8 *ie = mgmt->u.probe_req.variable;
2171                                 size_t ie_len = data->rx_mgmt.frame_len -
2172                                         (mgmt->u.probe_req.variable -
2173                                          data->rx_mgmt.frame);
2174                                 wpas_p2p_probe_req_rx(wpa_s, src, mgmt->da,
2175                                                       mgmt->bssid, ie, ie_len);
2176                                 break;
2177                         }
2178 #endif /* CONFIG_P2P */
2179                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2180                                 "management frame in non-AP mode");
2181                         break;
2182                 }
2183                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2184                 break;
2185 #endif /* CONFIG_AP */
2186         case EVENT_RX_ACTION:
2187                 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2188                         " Category=%u DataLen=%d freq=%d MHz",
2189                         MAC2STR(data->rx_action.sa),
2190                         data->rx_action.category, (int) data->rx_action.len,
2191                         data->rx_action.freq);
2192 #ifdef CONFIG_IEEE80211R
2193                 if (data->rx_action.category == WLAN_ACTION_FT) {
2194                         ft_rx_action(wpa_s, data->rx_action.data,
2195                                      data->rx_action.len);
2196                         break;
2197                 }
2198 #endif /* CONFIG_IEEE80211R */
2199 #ifdef CONFIG_IEEE80211W
2200 #ifdef CONFIG_SME
2201                 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2202                         sme_sa_query_rx(wpa_s, data->rx_action.sa,
2203                                         data->rx_action.data,
2204                                         data->rx_action.len);
2205                         break;
2206                 }
2207 #endif /* CONFIG_SME */
2208 #endif /* CONFIG_IEEE80211W */
2209 #ifdef CONFIG_GAS
2210                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2211                     gas_query_rx(wpa_s->gas, data->rx_action.da,
2212                                  data->rx_action.sa, data->rx_action.bssid,
2213                                  data->rx_action.data, data->rx_action.len,
2214                                  data->rx_action.freq) == 0)
2215                         break;
2216 #endif /* CONFIG_GAS */
2217                 if (data->rx_action.category == WLAN_ACTION_WNM) {
2218                         wnm_action_rx(wpa_s, &data->rx_action);
2219                         break;
2220                 }
2221 #ifdef CONFIG_TDLS
2222                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2223                     data->rx_action.len >= 4 &&
2224                     data->rx_action.data[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2225                         wpa_dbg(wpa_s, MSG_DEBUG, "TDLS: Received Discovery "
2226                                 "Response from " MACSTR,
2227                                 MAC2STR(data->rx_action.sa));
2228                         break;
2229                 }
2230 #endif /* CONFIG_TDLS */
2231 #ifdef CONFIG_P2P
2232                 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2233                                    data->rx_action.sa,
2234                                    data->rx_action.bssid,
2235                                    data->rx_action.category,
2236                                    data->rx_action.data,
2237                                    data->rx_action.len, data->rx_action.freq);
2238 #endif /* CONFIG_P2P */
2239                 break;
2240         case EVENT_RX_PROBE_REQ:
2241                 if (data->rx_probe_req.sa == NULL ||
2242                     data->rx_probe_req.ie == NULL)
2243                         break;
2244 #ifdef CONFIG_AP
2245                 if (wpa_s->ap_iface) {
2246                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2247                                              data->rx_probe_req.sa,
2248                                              data->rx_probe_req.da,
2249                                              data->rx_probe_req.bssid,
2250                                              data->rx_probe_req.ie,
2251                                              data->rx_probe_req.ie_len);
2252                         break;
2253                 }
2254 #endif /* CONFIG_AP */
2255 #ifdef CONFIG_P2P
2256                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2257                                       data->rx_probe_req.da,
2258                                       data->rx_probe_req.bssid,
2259                                       data->rx_probe_req.ie,
2260                                       data->rx_probe_req.ie_len);
2261 #endif /* CONFIG_P2P */
2262                 break;
2263         case EVENT_REMAIN_ON_CHANNEL:
2264 #ifdef CONFIG_OFFCHANNEL
2265                 offchannel_remain_on_channel_cb(
2266                         wpa_s, data->remain_on_channel.freq,
2267                         data->remain_on_channel.duration);
2268 #endif /* CONFIG_OFFCHANNEL */
2269 #ifdef CONFIG_P2P
2270                 wpas_p2p_remain_on_channel_cb(
2271                         wpa_s, data->remain_on_channel.freq,
2272                         data->remain_on_channel.duration);
2273 #endif /* CONFIG_P2P */
2274                 break;
2275         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2276 #ifdef CONFIG_OFFCHANNEL
2277                 offchannel_cancel_remain_on_channel_cb(
2278                         wpa_s, data->remain_on_channel.freq);
2279 #endif /* CONFIG_OFFCHANNEL */
2280 #ifdef CONFIG_P2P
2281                 wpas_p2p_cancel_remain_on_channel_cb(
2282                         wpa_s, data->remain_on_channel.freq);
2283 #endif /* CONFIG_P2P */
2284                 break;
2285 #ifdef CONFIG_P2P
2286         case EVENT_P2P_DEV_FOUND: {
2287                 struct p2p_peer_info peer_info;
2288
2289                 os_memset(&peer_info, 0, sizeof(peer_info));
2290                 if (data->p2p_dev_found.dev_addr)
2291                         os_memcpy(peer_info.p2p_device_addr,
2292                                   data->p2p_dev_found.dev_addr, ETH_ALEN);
2293                 if (data->p2p_dev_found.pri_dev_type)
2294                         os_memcpy(peer_info.pri_dev_type,
2295                                   data->p2p_dev_found.pri_dev_type,
2296                                   sizeof(peer_info.pri_dev_type));
2297                 if (data->p2p_dev_found.dev_name)
2298                         os_strlcpy(peer_info.device_name,
2299                                    data->p2p_dev_found.dev_name,
2300                                    sizeof(peer_info.device_name));
2301                 peer_info.config_methods = data->p2p_dev_found.config_methods;
2302                 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2303                 peer_info.group_capab = data->p2p_dev_found.group_capab;
2304
2305                 /*
2306                  * FIX: new_device=1 is not necessarily correct. We should
2307                  * maintain a P2P peer database in wpa_supplicant and update
2308                  * this information based on whether the peer is truly new.
2309                  */
2310                 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2311                 break;
2312                 }
2313         case EVENT_P2P_GO_NEG_REQ_RX:
2314                 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2315                                    data->p2p_go_neg_req_rx.dev_passwd_id);
2316                 break;
2317         case EVENT_P2P_GO_NEG_COMPLETED:
2318                 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2319                 break;
2320         case EVENT_P2P_PROV_DISC_REQUEST:
2321                 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2322                                    data->p2p_prov_disc_req.config_methods,
2323                                    data->p2p_prov_disc_req.dev_addr,
2324                                    data->p2p_prov_disc_req.pri_dev_type,
2325                                    data->p2p_prov_disc_req.dev_name,
2326                                    data->p2p_prov_disc_req.supp_config_methods,
2327                                    data->p2p_prov_disc_req.dev_capab,
2328                                    data->p2p_prov_disc_req.group_capab);
2329                 break;
2330         case EVENT_P2P_PROV_DISC_RESPONSE:
2331                 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2332                                     data->p2p_prov_disc_resp.config_methods);
2333                 break;
2334         case EVENT_P2P_SD_REQUEST:
2335                 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2336                                 data->p2p_sd_req.sa,
2337                                 data->p2p_sd_req.dialog_token,
2338                                 data->p2p_sd_req.update_indic,
2339                                 data->p2p_sd_req.tlvs,
2340                                 data->p2p_sd_req.tlvs_len);
2341                 break;
2342         case EVENT_P2P_SD_RESPONSE:
2343                 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2344                                  data->p2p_sd_resp.update_indic,
2345                                  data->p2p_sd_resp.tlvs,
2346                                  data->p2p_sd_resp.tlvs_len);
2347                 break;
2348 #endif /* CONFIG_P2P */
2349         case EVENT_EAPOL_RX:
2350                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2351                                         data->eapol_rx.data,
2352                                         data->eapol_rx.data_len);
2353                 break;
2354         case EVENT_SIGNAL_CHANGE:
2355                 bgscan_notify_signal_change(
2356                         wpa_s, data->signal_change.above_threshold,
2357                         data->signal_change.current_signal,
2358                         data->signal_change.current_noise,
2359                         data->signal_change.current_txrate);
2360                 break;
2361         case EVENT_INTERFACE_ENABLED:
2362                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2363                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2364 #ifdef CONFIG_AP
2365                         if (!wpa_s->ap_iface) {
2366                                 wpa_supplicant_set_state(wpa_s,
2367                                                          WPA_DISCONNECTED);
2368                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2369                         } else
2370                                 wpa_supplicant_set_state(wpa_s,
2371                                                          WPA_COMPLETED);
2372 #else /* CONFIG_AP */
2373                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2374                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2375 #endif /* CONFIG_AP */
2376                 }
2377                 break;
2378         case EVENT_INTERFACE_DISABLED:
2379                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2380                 wpa_supplicant_mark_disassoc(wpa_s);
2381                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2382                 break;
2383         case EVENT_CHANNEL_LIST_CHANGED:
2384                 if (wpa_s->drv_priv == NULL)
2385                         break; /* Ignore event during drv initialization */
2386 #ifdef CONFIG_P2P
2387                 wpas_p2p_update_channel_list(wpa_s);
2388 #endif /* CONFIG_P2P */
2389                 break;
2390         case EVENT_INTERFACE_UNAVAILABLE:
2391 #ifdef CONFIG_P2P
2392                 wpas_p2p_interface_unavailable(wpa_s);
2393 #endif /* CONFIG_P2P */
2394                 break;
2395         case EVENT_BEST_CHANNEL:
2396                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2397                         "(%d %d %d)",
2398                         data->best_chan.freq_24, data->best_chan.freq_5,
2399                         data->best_chan.freq_overall);
2400                 wpa_s->best_24_freq = data->best_chan.freq_24;
2401                 wpa_s->best_5_freq = data->best_chan.freq_5;
2402                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2403 #ifdef CONFIG_P2P
2404                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2405                                               data->best_chan.freq_5,
2406                                               data->best_chan.freq_overall);
2407 #endif /* CONFIG_P2P */
2408                 break;
2409         case EVENT_UNPROT_DEAUTH:
2410                 wpa_supplicant_event_unprot_deauth(wpa_s,
2411                                                    &data->unprot_deauth);
2412                 break;
2413         case EVENT_UNPROT_DISASSOC:
2414                 wpa_supplicant_event_unprot_disassoc(wpa_s,
2415                                                      &data->unprot_disassoc);
2416                 break;
2417         case EVENT_STATION_LOW_ACK:
2418 #ifdef CONFIG_AP
2419                 if (wpa_s->ap_iface && data)
2420                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2421                                                   data->low_ack.addr);
2422 #endif /* CONFIG_AP */
2423 #ifdef CONFIG_TDLS
2424                 if (data)
2425                         wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
2426 #endif /* CONFIG_TDLS */
2427                 break;
2428         case EVENT_IBSS_PEER_LOST:
2429 #ifdef CONFIG_IBSS_RSN
2430                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
2431 #endif /* CONFIG_IBSS_RSN */
2432                 break;
2433         case EVENT_DRIVER_GTK_REKEY:
2434                 if (os_memcmp(data->driver_gtk_rekey.bssid,
2435                               wpa_s->bssid, ETH_ALEN))
2436                         break;
2437                 if (!wpa_s->wpa)
2438                         break;
2439                 wpa_sm_update_replay_ctr(wpa_s->wpa,
2440                                          data->driver_gtk_rekey.replay_ctr);
2441                 break;
2442         case EVENT_SCHED_SCAN_STOPPED:
2443                 wpa_s->sched_scanning = 0;
2444                 wpa_supplicant_notify_scanning(wpa_s, 0);
2445
2446                 /*
2447                  * If we timed out, start a new sched scan to continue
2448                  * searching for more SSIDs.
2449                  */
2450                 if (wpa_s->sched_scan_timed_out)
2451                         wpa_supplicant_req_sched_scan(wpa_s);
2452                 break;
2453         case EVENT_WPS_BUTTON_PUSHED:
2454 #ifdef CONFIG_WPS
2455                 wpas_wps_start_pbc(wpa_s, NULL, 0);
2456 #endif /* CONFIG_WPS */
2457                 break;
2458         default:
2459                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2460                 break;
2461         }
2462 }