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