wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eapol_supp/eapol_supp_sm.h"
  13 #include "rsn_supp/wpa.h"
  14 #include "eloop.h"
  15 #include "config.h"
  16 #include "l2_packet/l2_packet.h"
  17 #include "wpa_supplicant_i.h"
  18 #include "driver_i.h"
  19 #include "pcsc_funcs.h"
  20 #include "rsn_supp/preauth.h"
  21 #include "rsn_supp/pmksa_cache.h"
  22 #include "common/wpa_ctrl.h"
  23 #include "eap_peer/eap.h"
  24 #include "ap/hostapd.h"
  25 #include "p2p/p2p.h"
  26 #include "notify.h"
  27 #include "common/ieee802_11_defs.h"
  28 #include "common/ieee802_11_common.h"
  29 #include "crypto/random.h"
  30 #include "blacklist.h"
  31 #include "wpas_glue.h"
  32 #include "wps_supplicant.h"
  33 #include "ibss_rsn.h"
  34 #include "sme.h"
  35 #include "gas_query.h"
  36 #include "p2p_supplicant.h"
  37 #include "bgscan.h"
  38 #include "ap.h"
  39 #include "bss.h"
  40 #include "scan.h"
  41 #include "offchannel.h"
  42
  43
  44 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  45 {
  46         struct wpa_ssid *ssid, *old_ssid;
  47
  48         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  49                 return 0;
  50
  51         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  52                 "information");
  53         ssid = wpa_supplicant_get_ssid(wpa_s);
  54         if (ssid == NULL) {
  55                 wpa_msg(wpa_s, MSG_INFO,
  56                         "No network configuration found for the current AP");
  57                 return -1;
  58         }
  59
  60         if (ssid->disabled) {
  61                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
  62                 return -1;
  63         }
  64
  65         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
  66                 "current AP");
  67         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
  68                 u8 wpa_ie[80];
  69                 size_t wpa_ie_len = sizeof(wpa_ie);
  70                 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
  71                                           wpa_ie, &wpa_ie_len);
  72         } else {
  73                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  74         }
  75
  76         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
  77                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
  78         old_ssid = wpa_s->current_ssid;
  79         wpa_s->current_ssid = ssid;
  80         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
  81         wpa_supplicant_initiate_eapol(wpa_s);
  82         if (old_ssid != wpa_s->current_ssid)
  83                 wpas_notify_network_changed(wpa_s);
  84
  85         return 0;
  86 }
  87
  88
  89 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
  90 {
  91         struct wpa_supplicant *wpa_s = eloop_ctx;
  92
  93         if (wpa_s->countermeasures) {
  94                 wpa_s->countermeasures = 0;
  95                 wpa_drv_set_countermeasures(wpa_s, 0);
  96                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
  97                 wpa_supplicant_req_scan(wpa_s, 0, 0);
  98         }
  99 }
 100
 101
 102 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 103 {
 104         int bssid_changed;
 105
 106 #ifdef CONFIG_IBSS_RSN
 107         ibss_rsn_deinit(wpa_s->ibss_rsn);
 108         wpa_s->ibss_rsn = NULL;
 109 #endif /* CONFIG_IBSS_RSN */
 110
 111 #ifdef CONFIG_AP
 112         wpa_supplicant_ap_deinit(wpa_s);
 113 #endif /* CONFIG_AP */
 114
 115         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 116                 return;
 117
 118         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 119         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 120         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 121         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 122 #ifdef CONFIG_P2P
 123         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 124 #endif /* CONFIG_P2P */
 125         wpa_s->current_bss = NULL;
 126         wpa_s->assoc_freq = 0;
 127 #ifdef CONFIG_IEEE80211R
 128 #ifdef CONFIG_SME
 129         if (wpa_s->sme.ft_ies)
 130                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 131 #endif /* CONFIG_SME */
 132 #endif /* CONFIG_IEEE80211R */
 133
 134         if (bssid_changed)
 135                 wpas_notify_bssid_changed(wpa_s);
 136
 137         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 138         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 139         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 140                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 141         wpa_s->ap_ies_from_associnfo = 0;
 142 }
 143
 144
 145 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 146 {
 147         struct wpa_ie_data ie;
 148         int pmksa_set = -1;
 149         size_t i;
 150
 151         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 152             ie.pmkid == NULL)
 153                 return;
 154
 155         for (i = 0; i < ie.num_pmkid; i++) {
 156                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 157                                                     ie.pmkid + i * PMKID_LEN,
 158                                                     NULL, NULL, 0);
 159                 if (pmksa_set == 0) {
 160                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 161                         break;
 162                 }
 163         }
 164
 165         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 166                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 167 }
 168
 169
 170 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 171                                                  union wpa_event_data *data)
 172 {
 173         if (data == NULL) {
 174                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 175                         "event");
 176                 return;
 177         }
 178         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 179                 " index=%d preauth=%d",
 180                 MAC2STR(data->pmkid_candidate.bssid),
 181                 data->pmkid_candidate.index,
 182                 data->pmkid_candidate.preauth);
 183
 184         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 185                             data->pmkid_candidate.index,
 186                             data->pmkid_candidate.preauth);
 187 }
 188
 189
 190 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 191 {
 192         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 193             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 194                 return 0;
 195
 196 #ifdef IEEE8021X_EAPOL
 197         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 198             wpa_s->current_ssid &&
 199             !(wpa_s->current_ssid->eapol_flags &
 200               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 201                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 202                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 203                  * plaintext or static WEP keys). */
 204                 return 0;
 205         }
 206 #endif /* IEEE8021X_EAPOL */
 207
 208         return 1;
 209 }
 210
 211
 212 /**
 213  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 214  * @wpa_s: pointer to wpa_supplicant data
 215  * @ssid: Configuration data for the network
 216  * Returns: 0 on success, -1 on failure
 217  *
 218  * This function is called when starting authentication with a network that is
 219  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 220  */
 221 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 222                               struct wpa_ssid *ssid)
 223 {
 224 #ifdef IEEE8021X_EAPOL
 225 #ifdef PCSC_FUNCS
 226         int aka = 0, sim = 0, type;
 227
 228         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 229                 return 0;
 230
 231         if (ssid->eap.eap_methods == NULL) {
 232                 sim = 1;
 233                 aka = 1;
 234         } else {
 235                 struct eap_method_type *eap = ssid->eap.eap_methods;
 236                 while (eap->vendor != EAP_VENDOR_IETF ||
 237                        eap->method != EAP_TYPE_NONE) {
 238                         if (eap->vendor == EAP_VENDOR_IETF) {
 239                                 if (eap->method == EAP_TYPE_SIM)
 240                                         sim = 1;
 241                                 else if (eap->method == EAP_TYPE_AKA)
 242                                         aka = 1;
 243                         }
 244                         eap++;
 245                 }
 246         }
 247
 248         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 249                 sim = 0;
 250         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
 251                 aka = 0;
 252
 253         if (!sim && !aka) {
 254                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 255                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 256                         "enabled");
 257                 return 0;
 258         }
 259
 260         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 261                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 262         if (sim && aka)
 263                 type = SCARD_TRY_BOTH;
 264         else if (aka)
 265                 type = SCARD_USIM_ONLY;
 266         else
 267                 type = SCARD_GSM_SIM_ONLY;
 268
 269         wpa_s->scard = scard_init(type);
 270         if (wpa_s->scard == NULL) {
 271                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 272                         "(pcsc-lite)");
 273                 return -1;
 274         }
 275         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 276         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 277 #endif /* PCSC_FUNCS */
 278 #endif /* IEEE8021X_EAPOL */
 279
 280         return 0;
 281 }
 282
 283
 284 #ifndef CONFIG_NO_SCAN_PROCESSING
 285 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
 286                                         struct wpa_ssid *ssid)
 287 {
 288         int i, privacy = 0;
 289
 290         if (ssid->mixed_cell)
 291                 return 1;
 292
 293 #ifdef CONFIG_WPS
 294         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 295                 return 1;
 296 #endif /* CONFIG_WPS */
 297
 298         for (i = 0; i < NUM_WEP_KEYS; i++) {
 299                 if (ssid->wep_key_len[i]) {
 300                         privacy = 1;
 301                         break;
 302                 }
 303         }
 304 #ifdef IEEE8021X_EAPOL
 305         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 306             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 307                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 308                 privacy = 1;
 309 #endif /* IEEE8021X_EAPOL */
 310
 311         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 312                 privacy = 1;
 313
 314         if (bss->caps & IEEE80211_CAP_PRIVACY)
 315                 return privacy;
 316         return !privacy;
 317 }
 318
 319
 320 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 321                                          struct wpa_ssid *ssid,
 322                                          struct wpa_scan_res *bss)
 323 {
 324         struct wpa_ie_data ie;
 325         int proto_match = 0;
 326         const u8 *rsn_ie, *wpa_ie;
 327         int ret;
 328         int wep_ok;
 329
 330         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 331         if (ret >= 0)
 332                 return ret;
 333
 334         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 335         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 336                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 337                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 338                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 339
 340         rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 341         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 342                 proto_match++;
 343
 344                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 345                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 346                                 "failed");
 347                         break;
 348                 }
 349
 350                 if (wep_ok &&
 351                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 352                 {
 353                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 354                                 "in RSN IE");
 355                         return 1;
 356                 }
 357
 358                 if (!(ie.proto & ssid->proto)) {
 359                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 360                                 "mismatch");
 361                         break;
 362                 }
 363
 364                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 365                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 366                                 "cipher mismatch");
 367                         break;
 368                 }
 369
 370                 if (!(ie.group_cipher & ssid->group_cipher)) {
 371                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 372                                 "cipher mismatch");
 373                         break;
 374                 }
 375
 376                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 377                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 378                                 "mismatch");
 379                         break;
 380                 }
 381
 382 #ifdef CONFIG_IEEE80211W
 383                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 384                     ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
 385                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 386                                 "frame protection");
 387                         break;
 388                 }
 389 #endif /* CONFIG_IEEE80211W */
 390
 391                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 392                 return 1;
 393         }
 394
 395         wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 396         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 397                 proto_match++;
 398
 399                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 400                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 401                                 "failed");
 402                         break;
 403                 }
 404
 405                 if (wep_ok &&
 406                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 407                 {
 408                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 409                                 "in WPA IE");
 410                         return 1;
 411                 }
 412
 413                 if (!(ie.proto & ssid->proto)) {
 414                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 415                                 "mismatch");
 416                         break;
 417                 }
 418
 419                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 420                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 421                                 "cipher mismatch");
 422                         break;
 423                 }
 424
 425                 if (!(ie.group_cipher & ssid->group_cipher)) {
 426                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 427                                 "cipher mismatch");
 428                         break;
 429                 }
 430
 431                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 432                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 433                                 "mismatch");
 434                         break;
 435                 }
 436
 437                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 438                 return 1;
 439         }
 440
 441         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 442             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 443                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 444                 return 0;
 445         }
 446
 447         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 448                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 449                 return 1;
 450         }
 451
 452         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 453                 "WPA/WPA2");
 454
 455         return 0;
 456 }
 457
 458
 459 static int freq_allowed(int *freqs, int freq)
 460 {
 461         int i;
 462
 463         if (freqs == NULL)
 464                 return 1;
 465
 466         for (i = 0; freqs[i]; i++)
 467                 if (freqs[i] == freq)
 468                         return 1;
 469         return 0;
 470 }
 471
 472
 473 static int ht_supported(const struct hostapd_hw_modes *mode)
 474 {
 475         if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
 476                 /*
 477                  * The driver did not indicate whether it supports HT. Assume
 478                  * it does to avoid connection issues.
 479                  */
 480                 return 1;
 481         }
 482
 483         /*
 484          * IEEE Std 802.11n-2009 20.1.1:
 485          * An HT non-AP STA shall support all EQM rates for one spatial stream.
 486          */
 487         return mode->mcs_set[0] == 0xff;
 488 }
 489
 490
 491 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_scan_res *bss)
 492 {
 493         const struct hostapd_hw_modes *mode = NULL, *modes;
 494         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 495         const u8 *rate_ie;
 496         int i, j, k;
 497
 498         if (bss->freq == 0)
 499                 return 1; /* Cannot do matching without knowing band */
 500
 501         modes = wpa_s->hw.modes;
 502         if (modes == NULL) {
 503                 /*
 504                  * The driver does not provide any additional information
 505                  * about the utilized hardware, so allow the connection attempt
 506                  * to continue.
 507                  */
 508                 return 1;
 509         }
 510
 511         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 512                 for (j = 0; j < modes[i].num_channels; j++) {
 513                         int freq = modes[i].channels[j].freq;
 514                         if (freq == bss->freq) {
 515                                 if (mode &&
 516                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 517                                         break; /* do not allow 802.11b replace
 518                                                 * 802.11g */
 519                                 mode = &modes[i];
 520                                 break;
 521                         }
 522                 }
 523         }
 524
 525         if (mode == NULL)
 526                 return 0;
 527
 528         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 529                 rate_ie = wpa_scan_get_ie(bss, scan_ie[i]);
 530                 if (rate_ie == NULL)
 531                         continue;
 532
 533                 for (j = 2; j < rate_ie[1] + 2; j++) {
 534                         int flagged = !!(rate_ie[j] & 0x80);
 535                         int r = (rate_ie[j] & 0x7f) * 5;
 536
 537                         /*
 538                          * IEEE Std 802.11n-2009 7.3.2.2:
 539                          * The new BSS Membership selector value is encoded
 540                          * like a legacy basic rate, but it is not a rate and
 541                          * only indicates if the BSS members are required to
 542                          * support the mandatory features of Clause 20 [HT PHY]
 543                          * in order to join the BSS.
 544                          */
 545                         if (flagged && ((rate_ie[j] & 0x7f) ==
 546                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 547                                 if (!ht_supported(mode)) {
 548                                         wpa_dbg(wpa_s, MSG_DEBUG,
 549                                                 "   hardware does not support "
 550                                                 "HT PHY");
 551                                         return 0;
 552                                 }
 553                                 continue;
 554                         }
 555
 556                         if (!flagged)
 557                                 continue;
 558
 559                         /* check for legacy basic rates */
 560                         for (k = 0; k < mode->num_rates; k++) {
 561                                 if (mode->rates[k] == r)
 562                                         break;
 563                         }
 564                         if (k == mode->num_rates) {
 565                                 /*
 566                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 567                                  * order to join a BSS all required rates
 568                                  * have to be supported by the hardware.
 569                                  */
 570                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 571                                         "not support required rate %d.%d Mbps",
 572                                         r / 10, r % 10);
 573                                 return 0;
 574                         }
 575                 }
 576         }
 577
 578         return 1;
 579 }
 580
 581
 582 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 583                                             int i, struct wpa_scan_res *bss,
 584                                             struct wpa_ssid *group)
 585 {
 586         const u8 *ssid_;
 587         u8 wpa_ie_len, rsn_ie_len, ssid_len;
 588         int wpa;
 589         struct wpa_blacklist *e;
 590         const u8 *ie;
 591         struct wpa_ssid *ssid;
 592
 593         ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 594         ssid_ = ie ? ie + 2 : (u8 *) "";
 595         ssid_len = ie ? ie[1] : 0;
 596
 597         ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 598         wpa_ie_len = ie ? ie[1] : 0;
 599
 600         ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 601         rsn_ie_len = ie ? ie[1] : 0;
 602
 603         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 604                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
 605                 i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
 606                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 607                 wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
 608
 609         e = wpa_blacklist_get(wpa_s, bss->bssid);
 610         if (e) {
 611                 int limit = 1;
 612                 if (wpa_supplicant_enabled_networks(wpa_s->conf) == 1) {
 613                         /*
 614                          * When only a single network is enabled, we can
 615                          * trigger blacklisting on the first failure. This
 616                          * should not be done with multiple enabled networks to
 617                          * avoid getting forced to move into a worse ESS on
 618                          * single error if there are no other BSSes of the
 619                          * current ESS.
 620                          */
 621                         limit = 0;
 622                 }
 623                 if (e->count > limit) {
 624                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 625                                 "(count=%d limit=%d)", e->count, limit);
 626                         return NULL;
 627                 }
 628         }
 629
 630         if (ssid_len == 0) {
 631                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 632                 return NULL;
 633         }
 634
 635         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 636
 637         for (ssid = group; ssid; ssid = ssid->pnext) {
 638                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 639
 640                 if (ssid->disabled) {
 641                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 642                         continue;
 643                 }
 644
 645 #ifdef CONFIG_WPS
 646                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 647                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 648                                 "(WPS)");
 649                         continue;
 650                 }
 651
 652                 if (wpa && ssid->ssid_len == 0 &&
 653                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 654                         check_ssid = 0;
 655
 656                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 657                         /* Only allow wildcard SSID match if an AP
 658                          * advertises active WPS operation that matches
 659                          * with our mode. */
 660                         check_ssid = 1;
 661                         if (ssid->ssid_len == 0 &&
 662                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 663                                 check_ssid = 0;
 664                 }
 665 #endif /* CONFIG_WPS */
 666
 667                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 668                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 669                         check_ssid = 0;
 670
 671                 if (check_ssid &&
 672                     (ssid_len != ssid->ssid_len ||
 673                      os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
 674                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 675                         continue;
 676                 }
 677
 678                 if (ssid->bssid_set &&
 679                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 680                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 681                         continue;
 682                 }
 683
 684                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 685                         continue;
 686
 687                 if (!wpa &&
 688                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 689                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 690                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 691                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 692                                 "not allowed");
 693                         continue;
 694                 }
 695
 696                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 697                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 698                                 "mismatch");
 699                         continue;
 700                 }
 701
 702                 if (bss->caps & IEEE80211_CAP_IBSS) {
 703                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - IBSS (adhoc) "
 704                                 "network");
 705                         continue;
 706                 }
 707
 708                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 709                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 710                                 "allowed");
 711                         continue;
 712                 }
 713
 714                 if (!rate_match(wpa_s, bss)) {
 715                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 716                                 "not match");
 717                         continue;
 718                 }
 719
 720 #ifdef CONFIG_P2P
 721                 /*
 722                  * TODO: skip the AP if its P2P IE has Group Formation
 723                  * bit set in the P2P Group Capability Bitmap and we
 724                  * are not in Group Formation with that device.
 725                  */
 726 #endif /* CONFIG_P2P */
 727
 728                 /* Matching configuration found */
 729                 return ssid;
 730         }
 731
 732         /* No matching configuration found */
 733         return NULL;
 734 }
 735
 736
 737 static struct wpa_bss *
 738 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 739                           struct wpa_scan_results *scan_res,
 740                           struct wpa_ssid *group,
 741                           struct wpa_ssid **selected_ssid)
 742 {
 743         size_t i;
 744
 745         wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 746                 group->priority);
 747
 748         for (i = 0; i < scan_res->num; i++) {
 749                 struct wpa_scan_res *bss = scan_res->res[i];
 750                 const u8 *ie, *ssid;
 751                 u8 ssid_len;
 752
 753                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
 754                 if (!*selected_ssid)
 755                         continue;
 756
 757                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 758                 ssid = ie ? ie + 2 : (u8 *) "";
 759                 ssid_len = ie ? ie[1] : 0;
 760
 761                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 762                         " ssid='%s'",
 763                         MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
 764                 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
 765         }
 766
 767         return NULL;
 768 }
 769
 770
 771 static struct wpa_bss *
 772 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 773                             struct wpa_scan_results *scan_res,
 774                             struct wpa_ssid **selected_ssid)
 775 {
 776         struct wpa_bss *selected = NULL;
 777         int prio;
 778
 779         while (selected == NULL) {
 780                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 781                         selected = wpa_supplicant_select_bss(
 782                                 wpa_s, scan_res, wpa_s->conf->pssid[prio],
 783                                 selected_ssid);
 784                         if (selected)
 785                                 break;
 786                 }
 787
 788                 if (selected == NULL && wpa_s->blacklist &&
 789                     !wpa_s->countermeasures) {
 790                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
 791                                 "blacklist and try again");
 792                         wpa_blacklist_clear(wpa_s);
 793                         wpa_s->blacklist_cleared++;
 794                 } else if (selected == NULL)
 795                         break;
 796         }
 797
 798         return selected;
 799 }
 800
 801
 802 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 803                                         int timeout_sec, int timeout_usec)
 804 {
 805         if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
 806                 /*
 807                  * No networks are enabled; short-circuit request so
 808                  * we don't wait timeout seconds before transitioning
 809                  * to INACTIVE state.
 810                  */
 811                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 812                 return;
 813         }
 814         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 815 }
 816
 817
 818 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 819                            struct wpa_bss *selected,
 820                            struct wpa_ssid *ssid)
 821 {
 822         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 823                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 824                         "PBC session overlap");
 825 #ifdef CONFIG_P2P
 826                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
 827                         return -1;
 828 #endif /* CONFIG_P2P */
 829
 830 #ifdef CONFIG_WPS
 831                 wpas_wps_cancel(wpa_s);
 832 #endif /* CONFIG_WPS */
 833                 return -1;
 834         }
 835
 836         /*
 837          * Do not trigger new association unless the BSSID has changed or if
 838          * reassociation is requested. If we are in process of associating with
 839          * the selected BSSID, do not trigger new attempt.
 840          */
 841         if (wpa_s->reassociate ||
 842             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 843              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
 844                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
 845               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 846               0))) {
 847                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 848                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 849                         return 0;
 850                 }
 851                 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
 852                         "reassociate: %d  selected: "MACSTR "  bssid: " MACSTR
 853                         "  pending: " MACSTR "  wpa_state: %s",
 854                         wpa_s->reassociate, MAC2STR(selected->bssid),
 855                         MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
 856                         wpa_supplicant_state_txt(wpa_s->wpa_state));
 857                 wpa_supplicant_associate(wpa_s, selected, ssid);
 858         } else {
 859                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
 860                         "selected AP");
 861         }
 862
 863         return 0;
 864 }
 865
 866
 867 static struct wpa_ssid *
 868 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 869 {
 870         int prio;
 871         struct wpa_ssid *ssid;
 872
 873         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 874                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 875                 {
 876                         if (ssid->disabled)
 877                                 continue;
 878                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 879                             ssid->mode == IEEE80211_MODE_AP)
 880                                 return ssid;
 881                 }
 882         }
 883         return NULL;
 884 }
 885
 886
 887 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 888  * on BSS added and BSS changed events */
 889 static void wpa_supplicant_rsn_preauth_scan_results(
 890         struct wpa_supplicant *wpa_s)
 891 {
 892         struct wpa_bss *bss;
 893
 894         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 895                 return;
 896
 897         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 898                 const u8 *ssid, *rsn;
 899
 900                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
 901                 if (ssid == NULL)
 902                         continue;
 903
 904                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 905                 if (rsn == NULL)
 906                         continue;
 907
 908                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
 909         }
 910
 911 }
 912
 913
 914 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
 915                                        struct wpa_bss *selected,
 916                                        struct wpa_ssid *ssid,
 917                                        struct wpa_scan_results *scan_res)
 918 {
 919         size_t i;
 920         struct wpa_scan_res *current_bss = NULL;
 921         int min_diff;
 922
 923         if (wpa_s->reassociate)
 924                 return 1; /* explicit request to reassociate */
 925         if (wpa_s->wpa_state < WPA_ASSOCIATED)
 926                 return 1; /* we are not associated; continue */
 927         if (wpa_s->current_ssid == NULL)
 928                 return 1; /* unknown current SSID */
 929         if (wpa_s->current_ssid != ssid)
 930                 return 1; /* different network block */
 931
 932         if (wpas_driver_bss_selection(wpa_s))
 933                 return 0; /* Driver-based roaming */
 934
 935         for (i = 0; i < scan_res->num; i++) {
 936                 struct wpa_scan_res *res = scan_res->res[i];
 937                 const u8 *ie;
 938                 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
 939                         continue;
 940
 941                 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 942                 if (ie == NULL)
 943                         continue;
 944                 if (ie[1] != wpa_s->current_ssid->ssid_len ||
 945                     os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
 946                         continue;
 947                 current_bss = res;
 948                 break;
 949         }
 950
 951         if (!current_bss)
 952                 return 1; /* current BSS not seen in scan results */
 953
 954         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
 955         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
 956                 MAC2STR(current_bss->bssid), current_bss->level);
 957         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
 958                 MAC2STR(selected->bssid), selected->level);
 959
 960         if (wpa_s->current_ssid->bssid_set &&
 961             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
 962             0) {
 963                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
 964                         "has preferred BSSID");
 965                 return 1;
 966         }
 967
 968         min_diff = 2;
 969         if (current_bss->level < 0) {
 970                 if (current_bss->level < -85)
 971                         min_diff = 1;
 972                 else if (current_bss->level < -80)
 973                         min_diff = 2;
 974                 else if (current_bss->level < -75)
 975                         min_diff = 3;
 976                 else if (current_bss->level < -70)
 977                         min_diff = 4;
 978                 else
 979                         min_diff = 5;
 980         }
 981         if (abs(current_bss->level - selected->level) < min_diff) {
 982                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
 983                         "in signal level");
 984                 return 0;
 985         }
 986
 987         return 1;
 988 }
 989
 990
 991 /* Return < 0 if no scan results could be fetched. */
 992 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 993                                               union wpa_event_data *data)
 994 {
 995         struct wpa_bss *selected;
 996         struct wpa_ssid *ssid = NULL;
 997         struct wpa_scan_results *scan_res;
 998         int ap = 0;
 999
1000 #ifdef CONFIG_AP
1001         if (wpa_s->ap_iface)
1002                 ap = 1;
1003 #endif /* CONFIG_AP */
1004
1005         wpa_supplicant_notify_scanning(wpa_s, 0);
1006
1007 #ifdef CONFIG_P2P
1008         if (wpa_s->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
1009             wpa_s->global->p2p != NULL) {
1010                 wpa_s->p2p_cb_on_scan_complete = 0;
1011                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
1012                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
1013                                 "stopped scan processing");
1014                         return -1;
1015                 }
1016         }
1017 #endif /* CONFIG_P2P */
1018
1019         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1020                                                    data ? &data->scan_info :
1021                                                    NULL, 1);
1022         if (scan_res == NULL) {
1023                 if (wpa_s->conf->ap_scan == 2 || ap)
1024                         return -1;
1025                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1026                         "scanning again");
1027                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1028                 return -1;
1029         }
1030
1031 #ifndef CONFIG_NO_RANDOM_POOL
1032         size_t i, num;
1033         num = scan_res->num;
1034         if (num > 10)
1035                 num = 10;
1036         for (i = 0; i < num; i++) {
1037                 u8 buf[5];
1038                 struct wpa_scan_res *res = scan_res->res[i];
1039                 buf[0] = res->bssid[5];
1040                 buf[1] = res->qual & 0xff;
1041                 buf[2] = res->noise & 0xff;
1042                 buf[3] = res->level & 0xff;
1043                 buf[4] = res->tsf & 0xff;
1044                 random_add_randomness(buf, sizeof(buf));
1045         }
1046 #endif /* CONFIG_NO_RANDOM_POOL */
1047
1048         if (wpa_s->scan_res_handler) {
1049                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1050                                          struct wpa_scan_results *scan_res);
1051
1052                 scan_res_handler = wpa_s->scan_res_handler;
1053                 wpa_s->scan_res_handler = NULL;
1054                 scan_res_handler(wpa_s, scan_res);
1055
1056                 wpa_scan_results_free(scan_res);
1057                 return 0;
1058         }
1059
1060         if (ap) {
1061                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1062 #ifdef CONFIG_AP
1063                 if (wpa_s->ap_iface->scan_cb)
1064                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1065 #endif /* CONFIG_AP */
1066                 wpa_scan_results_free(scan_res);
1067                 return 0;
1068         }
1069
1070         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
1071         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1072         wpas_notify_scan_results(wpa_s);
1073
1074         wpas_notify_scan_done(wpa_s, 1);
1075
1076         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
1077                 wpa_scan_results_free(scan_res);
1078                 return 0;
1079         }
1080
1081         if (wpa_s->disconnected) {
1082                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1083                 wpa_scan_results_free(scan_res);
1084                 return 0;
1085         }
1086
1087         if (!wpas_driver_bss_selection(wpa_s) &&
1088             bgscan_notify_scan(wpa_s, scan_res) == 1) {
1089                 wpa_scan_results_free(scan_res);
1090                 return 0;
1091         }
1092
1093         selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
1094
1095         if (selected) {
1096                 int skip;
1097                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
1098                                                     scan_res);
1099                 wpa_scan_results_free(scan_res);
1100                 if (skip) {
1101                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1102                         return 0;
1103                 }
1104
1105                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1106                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1107                         return -1;
1108                 }
1109                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1110         } else {
1111                 wpa_scan_results_free(scan_res);
1112                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1113                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1114                 if (ssid) {
1115                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1116                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1117                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1118                 } else {
1119                         int timeout_sec = wpa_s->scan_interval;
1120                         int timeout_usec = 0;
1121 #ifdef CONFIG_P2P
1122                         if (wpa_s->p2p_in_provisioning) {
1123                                 /*
1124                                  * Use shorter wait during P2P Provisioning
1125                                  * state to speed up group formation.
1126                                  */
1127                                 timeout_sec = 0;
1128                                 timeout_usec = 250000;
1129                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1130                                                             timeout_usec);
1131                                 return 0;
1132                         }
1133 #endif /* CONFIG_P2P */
1134                         if (wpa_supplicant_req_sched_scan(wpa_s))
1135                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1136                                                             timeout_usec);
1137                 }
1138         }
1139         return 0;
1140 }
1141
1142
1143 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1144                                               union wpa_event_data *data)
1145 {
1146         const char *rn, *rn2;
1147         struct wpa_supplicant *ifs;
1148
1149         if (_wpa_supplicant_event_scan_results(wpa_s, data) < 0) {
1150                 /*
1151                  * If no scan results could be fetched, then no need to
1152                  * notify those interfaces that did not actually request
1153                  * this scan.
1154                  */
1155                 return;
1156         }
1157
1158         /*
1159          * Check other interfaces to see if they have the same radio-name. If
1160          * so, they get updated with this same scan info.
1161          */
1162         if (!wpa_s->driver->get_radio_name)
1163                 return;
1164
1165         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1166         if (rn == NULL || rn[0] == '\0')
1167                 return;
1168
1169         wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1170                 "sharing same radio (%s) in event_scan_results", rn);
1171
1172         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1173                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1174                         continue;
1175
1176                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1177                 if (rn2 && os_strcmp(rn, rn2) == 0) {
1178                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1179                                    "sibling", ifs->ifname);
1180                         _wpa_supplicant_event_scan_results(ifs, data);
1181                 }
1182         }
1183 }
1184
1185 #endif /* CONFIG_NO_SCAN_PROCESSING */
1186
1187
1188 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1189                                           union wpa_event_data *data)
1190 {
1191         int l, len, found = 0, wpa_found, rsn_found;
1192         const u8 *p;
1193
1194         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1195         if (data->assoc_info.req_ies)
1196                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1197                             data->assoc_info.req_ies_len);
1198         if (data->assoc_info.resp_ies) {
1199                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1200                             data->assoc_info.resp_ies_len);
1201 #ifdef CONFIG_TDLS
1202                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1203                                         data->assoc_info.resp_ies_len);
1204 #endif /* CONFIG_TDLS */
1205         }
1206         if (data->assoc_info.beacon_ies)
1207                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1208                             data->assoc_info.beacon_ies,
1209                             data->assoc_info.beacon_ies_len);
1210         if (data->assoc_info.freq)
1211                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1212                         data->assoc_info.freq);
1213
1214         p = data->assoc_info.req_ies;
1215         l = data->assoc_info.req_ies_len;
1216
1217         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1218         while (p && l >= 2) {
1219                 len = p[1] + 2;
1220                 if (len > l) {
1221                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1222                                     p, l);
1223                         break;
1224                 }
1225                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1226                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1227                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1228                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1229                                 break;
1230                         found = 1;
1231                         wpa_find_assoc_pmkid(wpa_s);
1232                         break;
1233                 }
1234                 l -= len;
1235                 p += len;
1236         }
1237         if (!found && data->assoc_info.req_ies)
1238                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1239
1240 #ifdef CONFIG_IEEE80211R
1241 #ifdef CONFIG_SME
1242         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1243                 u8 bssid[ETH_ALEN];
1244                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1245                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1246                                                  data->assoc_info.resp_ies,
1247                                                  data->assoc_info.resp_ies_len,
1248                                                  bssid) < 0) {
1249                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1250                                 "Reassociation Response failed");
1251                         wpa_supplicant_deauthenticate(
1252                                 wpa_s, WLAN_REASON_INVALID_IE);
1253                         return -1;
1254                 }
1255         }
1256
1257         p = data->assoc_info.resp_ies;
1258         l = data->assoc_info.resp_ies_len;
1259
1260 #ifdef CONFIG_WPS_STRICT
1261         if (p && wpa_s->current_ssid &&
1262             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1263                 struct wpabuf *wps;
1264                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1265                 if (wps == NULL) {
1266                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1267                                 "include WPS IE in (Re)Association Response");
1268                         return -1;
1269                 }
1270
1271                 if (wps_validate_assoc_resp(wps) < 0) {
1272                         wpabuf_free(wps);
1273                         wpa_supplicant_deauthenticate(
1274                                 wpa_s, WLAN_REASON_INVALID_IE);
1275                         return -1;
1276                 }
1277                 wpabuf_free(wps);
1278         }
1279 #endif /* CONFIG_WPS_STRICT */
1280
1281         /* Go through the IEs and make a copy of the MDIE, if present. */
1282         while (p && l >= 2) {
1283                 len = p[1] + 2;
1284                 if (len > l) {
1285                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1286                                     p, l);
1287                         break;
1288                 }
1289                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1290                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1291                         wpa_s->sme.ft_used = 1;
1292                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1293                                   MOBILITY_DOMAIN_ID_LEN);
1294                         break;
1295                 }
1296                 l -= len;
1297                 p += len;
1298         }
1299 #endif /* CONFIG_SME */
1300
1301         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1302                              data->assoc_info.resp_ies_len);
1303 #endif /* CONFIG_IEEE80211R */
1304
1305         /* WPA/RSN IE from Beacon/ProbeResp */
1306         p = data->assoc_info.beacon_ies;
1307         l = data->assoc_info.beacon_ies_len;
1308
1309         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1310          */
1311         wpa_found = rsn_found = 0;
1312         while (p && l >= 2) {
1313                 len = p[1] + 2;
1314                 if (len > l) {
1315                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1316                                     p, l);
1317                         break;
1318                 }
1319                 if (!wpa_found &&
1320                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1321                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1322                         wpa_found = 1;
1323                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1324                 }
1325
1326                 if (!rsn_found &&
1327                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1328                         rsn_found = 1;
1329                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1330                 }
1331
1332                 l -= len;
1333                 p += len;
1334         }
1335
1336         if (!wpa_found && data->assoc_info.beacon_ies)
1337                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1338         if (!rsn_found && data->assoc_info.beacon_ies)
1339                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1340         if (wpa_found || rsn_found)
1341                 wpa_s->ap_ies_from_associnfo = 1;
1342
1343         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1344             wpa_s->assoc_freq != data->assoc_info.freq) {
1345                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1346                            "%u to %u MHz",
1347                            wpa_s->assoc_freq, data->assoc_info.freq);
1348                 wpa_supplicant_update_scan_results(wpa_s);
1349         }
1350
1351         wpa_s->assoc_freq = data->assoc_info.freq;
1352
1353         return 0;
1354 }
1355
1356
1357 static struct wpa_bss * wpa_supplicant_get_new_bss(
1358         struct wpa_supplicant *wpa_s, const u8 *bssid)
1359 {
1360         struct wpa_bss *bss = NULL;
1361         struct wpa_ssid *ssid = wpa_s->current_ssid;
1362
1363         if (ssid->ssid_len > 0)
1364                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
1365         if (!bss)
1366                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1367
1368         return bss;
1369 }
1370
1371
1372 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1373 {
1374         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1375
1376         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1377                 return -1;
1378
1379         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1380                 return 0;
1381
1382         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1383                                         WPA_IE_VENDOR_TYPE);
1384         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1385
1386         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1387                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1388             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1389                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1390                 return -1;
1391
1392         return 0;
1393 }
1394
1395
1396 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1397                                        union wpa_event_data *data)
1398 {
1399         u8 bssid[ETH_ALEN];
1400         int ft_completed;
1401         int bssid_changed;
1402         struct wpa_driver_capa capa;
1403
1404 #ifdef CONFIG_AP
1405         if (wpa_s->ap_iface) {
1406                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1407                                     data->assoc_info.addr,
1408                                     data->assoc_info.req_ies,
1409                                     data->assoc_info.req_ies_len,
1410                                     data->assoc_info.reassoc);
1411                 return;
1412         }
1413 #endif /* CONFIG_AP */
1414
1415         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1416         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1417                 return;
1418
1419         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1420         if (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1421             os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1422                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1423                         MACSTR, MAC2STR(bssid));
1424                 random_add_randomness(bssid, ETH_ALEN);
1425                 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1426                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1427                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1428                 if (bssid_changed)
1429                         wpas_notify_bssid_changed(wpa_s);
1430
1431                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1432                         wpa_clear_keys(wpa_s, bssid);
1433                 }
1434                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1435                         wpa_supplicant_disassociate(
1436                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1437                         return;
1438                 }
1439                 if (wpa_s->current_ssid) {
1440                         struct wpa_bss *bss = NULL;
1441
1442                         bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1443                         if (!bss) {
1444                                 wpa_supplicant_update_scan_results(wpa_s);
1445
1446                                 /* Get the BSS from the new scan results */
1447                                 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1448                         }
1449
1450                         if (bss)
1451                                 wpa_s->current_bss = bss;
1452                 }
1453
1454                 if (wpa_s->conf->ap_scan == 1 &&
1455                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1456                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1457                                 wpa_msg(wpa_s, MSG_WARNING,
1458                                         "WPA/RSN IEs not updated");
1459                 }
1460         }
1461
1462 #ifdef CONFIG_SME
1463         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1464         wpa_s->sme.prev_bssid_set = 1;
1465 #endif /* CONFIG_SME */
1466
1467         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1468         if (wpa_s->current_ssid) {
1469                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1470                  * initialized before association, but for other modes,
1471                  * initialize PC/SC here, if the current configuration needs
1472                  * smartcard or SIM/USIM. */
1473                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1474         }
1475         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1476         if (wpa_s->l2)
1477                 l2_packet_notify_auth_start(wpa_s->l2);
1478
1479         /*
1480          * Set portEnabled first to FALSE in order to get EAP state machine out
1481          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1482          * state machine may transit to AUTHENTICATING state based on obsolete
1483          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1484          * AUTHENTICATED without ever giving chance to EAP state machine to
1485          * reset the state.
1486          */
1487         if (!ft_completed) {
1488                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1489                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1490         }
1491         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1492                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1493         /* 802.1X::portControl = Auto */
1494         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1495         wpa_s->eapol_received = 0;
1496         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1497             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1498             (wpa_s->current_ssid &&
1499              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1500                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1501                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1502         } else if (!ft_completed) {
1503                 /* Timeout for receiving the first EAPOL packet */
1504                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1505         }
1506         wpa_supplicant_cancel_scan(wpa_s);
1507
1508         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1509             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1510                 /*
1511                  * We are done; the driver will take care of RSN 4-way
1512                  * handshake.
1513                  */
1514                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1515                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1516                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1517                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1518         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1519                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1520                 /*
1521                  * The driver will take care of RSN 4-way handshake, so we need
1522                  * to allow EAPOL supplicant to complete its work without
1523                  * waiting for WPA supplicant.
1524                  */
1525                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1526         } else if (ft_completed) {
1527                 /*
1528                  * FT protocol completed - make sure EAPOL state machine ends
1529                  * up in authenticated.
1530                  */
1531                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1532                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1533                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1534                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1535         }
1536
1537         if (wpa_s->pending_eapol_rx) {
1538                 struct os_time now, age;
1539                 os_get_time(&now);
1540                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1541                 if (age.sec == 0 && age.usec < 100000 &&
1542                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1543                     0) {
1544                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1545                                 "frame that was received just before "
1546                                 "association notification");
1547                         wpa_supplicant_rx_eapol(
1548                                 wpa_s, wpa_s->pending_eapol_rx_src,
1549                                 wpabuf_head(wpa_s->pending_eapol_rx),
1550                                 wpabuf_len(wpa_s->pending_eapol_rx));
1551                 }
1552                 wpabuf_free(wpa_s->pending_eapol_rx);
1553                 wpa_s->pending_eapol_rx = NULL;
1554         }
1555
1556         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1557              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1558             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1559             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1560                 /* Set static WEP keys again */
1561                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1562         }
1563
1564 #ifdef CONFIG_IBSS_RSN
1565         if (wpa_s->current_ssid &&
1566             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1567             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1568             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1569             wpa_s->ibss_rsn == NULL) {
1570                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1571                 if (!wpa_s->ibss_rsn) {
1572                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1573                         wpa_supplicant_deauthenticate(
1574                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1575                         return;
1576                 }
1577
1578                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1579         }
1580 #endif /* CONFIG_IBSS_RSN */
1581 }
1582
1583
1584 static int disconnect_reason_recoverable(u16 reason_code)
1585 {
1586         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
1587                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
1588                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
1589 }
1590
1591
1592 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1593                                           u16 reason_code,
1594                                           int locally_generated)
1595 {
1596         const u8 *bssid;
1597         int authenticating;
1598         u8 prev_pending_bssid[ETH_ALEN];
1599         struct wpa_bss *fast_reconnect = NULL;
1600         struct wpa_ssid *fast_reconnect_ssid = NULL;
1601
1602         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1603         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1604
1605         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1606                 /*
1607                  * At least Host AP driver and a Prism3 card seemed to be
1608                  * generating streams of disconnected events when configuring
1609                  * IBSS for WPA-None. Ignore them for now.
1610                  */
1611                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1612                         "IBSS/WPA-None mode");
1613                 return;
1614         }
1615
1616         if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1617             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1618                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1619                         "pre-shared key may be incorrect");
1620         }
1621         if (!wpa_s->auto_reconnect_disabled ||
1622             wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1623                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
1624                         "reconnect (wps=%d wpa_state=%d)",
1625                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
1626                         wpa_s->wpa_state);
1627                 if (wpa_s->wpa_state == WPA_COMPLETED &&
1628                     wpa_s->current_ssid &&
1629                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
1630                     !locally_generated &&
1631                     disconnect_reason_recoverable(reason_code)) {
1632                         /*
1633                          * It looks like the AP has dropped association with
1634                          * us, but could allow us to get back in. Try to
1635                          * reconnect to the same BSS without full scan to save
1636                          * time for some common cases.
1637                          */
1638                         fast_reconnect = wpa_s->current_bss;
1639                         fast_reconnect_ssid = wpa_s->current_ssid;
1640                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1641                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1642                 else
1643                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
1644                                 "immediate scan");
1645         } else {
1646                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
1647                         "try to re-connect");
1648                 wpa_s->reassociate = 0;
1649                 wpa_s->disconnected = 1;
1650                 wpa_supplicant_cancel_sched_scan(wpa_s);
1651         }
1652         bssid = wpa_s->bssid;
1653         if (is_zero_ether_addr(bssid))
1654                 bssid = wpa_s->pending_bssid;
1655         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
1656                 wpas_connection_failed(wpa_s, bssid);
1657         wpa_sm_notify_disassoc(wpa_s->wpa);
1658         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1659                 " reason=%d",
1660                 MAC2STR(bssid), reason_code);
1661         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1662                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1663                 wpa_s->keys_cleared = 0;
1664                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1665         }
1666         wpa_supplicant_mark_disassoc(wpa_s);
1667
1668         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1669                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
1670
1671         if (fast_reconnect) {
1672 #ifndef CONFIG_NO_SCAN_PROCESSING
1673                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
1674                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
1675                                            fast_reconnect_ssid) < 0) {
1676                         /* Recover through full scan */
1677                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1678                 }
1679 #endif /* CONFIG_NO_SCAN_PROCESSING */
1680         }
1681 }
1682
1683
1684 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1685 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
1686 {
1687         struct wpa_supplicant *wpa_s = eloop_ctx;
1688
1689         if (!wpa_s->pending_mic_error_report)
1690                 return;
1691
1692         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
1693         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1694         wpa_s->pending_mic_error_report = 0;
1695 }
1696 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1697
1698
1699 static void
1700 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1701                                          union wpa_event_data *data)
1702 {
1703         int pairwise;
1704         struct os_time t;
1705
1706         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1707         pairwise = (data && data->michael_mic_failure.unicast);
1708         os_get_time(&t);
1709         if ((wpa_s->last_michael_mic_error &&
1710              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1711             wpa_s->pending_mic_error_report) {
1712                 if (wpa_s->pending_mic_error_report) {
1713                         /*
1714                          * Send the pending MIC error report immediately since
1715                          * we are going to start countermeasures and AP better
1716                          * do the same.
1717                          */
1718                         wpa_sm_key_request(wpa_s->wpa, 1,
1719                                            wpa_s->pending_mic_error_pairwise);
1720                 }
1721
1722                 /* Send the new MIC error report immediately since we are going
1723                  * to start countermeasures and AP better do the same.
1724                  */
1725                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1726
1727                 /* initialize countermeasures */
1728                 wpa_s->countermeasures = 1;
1729
1730                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
1731
1732                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1733
1734                 /*
1735                  * Need to wait for completion of request frame. We do not get
1736                  * any callback for the message completion, so just wait a
1737                  * short while and hope for the best. */
1738                 os_sleep(0, 10000);
1739
1740                 wpa_drv_set_countermeasures(wpa_s, 1);
1741                 wpa_supplicant_deauthenticate(wpa_s,
1742                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
1743                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1744                                      wpa_s, NULL);
1745                 eloop_register_timeout(60, 0,
1746                                        wpa_supplicant_stop_countermeasures,
1747                                        wpa_s, NULL);
1748                 /* TODO: mark the AP rejected for 60 second. STA is
1749                  * allowed to associate with another AP.. */
1750         } else {
1751 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1752                 if (wpa_s->mic_errors_seen) {
1753                         /*
1754                          * Reduce the effectiveness of Michael MIC error
1755                          * reports as a means for attacking against TKIP if
1756                          * more than one MIC failure is noticed with the same
1757                          * PTK. We delay the transmission of the reports by a
1758                          * random time between 0 and 60 seconds in order to
1759                          * force the attacker wait 60 seconds before getting
1760                          * the information on whether a frame resulted in a MIC
1761                          * failure.
1762                          */
1763                         u8 rval[4];
1764                         int sec;
1765
1766                         if (os_get_random(rval, sizeof(rval)) < 0)
1767                                 sec = os_random() % 60;
1768                         else
1769                                 sec = WPA_GET_BE32(rval) % 60;
1770                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
1771                                 "report %d seconds", sec);
1772                         wpa_s->pending_mic_error_report = 1;
1773                         wpa_s->pending_mic_error_pairwise = pairwise;
1774                         eloop_cancel_timeout(
1775                                 wpa_supplicant_delayed_mic_error_report,
1776                                 wpa_s, NULL);
1777                         eloop_register_timeout(
1778                                 sec, os_random() % 1000000,
1779                                 wpa_supplicant_delayed_mic_error_report,
1780                                 wpa_s, NULL);
1781                 } else {
1782                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1783                 }
1784 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1785                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1786 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1787         }
1788         wpa_s->last_michael_mic_error = t.sec;
1789         wpa_s->mic_errors_seen++;
1790 }
1791
1792
1793 #ifdef CONFIG_TERMINATE_ONLASTIF
1794 static int any_interfaces(struct wpa_supplicant *head)
1795 {
1796         struct wpa_supplicant *wpa_s;
1797
1798         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1799                 if (!wpa_s->interface_removed)
1800                         return 1;
1801         return 0;
1802 }
1803 #endif /* CONFIG_TERMINATE_ONLASTIF */
1804
1805
1806 static void
1807 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1808                                       union wpa_event_data *data)
1809 {
1810         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1811                 return;
1812
1813         switch (data->interface_status.ievent) {
1814         case EVENT_INTERFACE_ADDED:
1815                 if (!wpa_s->interface_removed)
1816                         break;
1817                 wpa_s->interface_removed = 0;
1818                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
1819                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1820                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
1821                                 "driver after interface was added");
1822                 }
1823                 break;
1824         case EVENT_INTERFACE_REMOVED:
1825                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
1826                 wpa_s->interface_removed = 1;
1827                 wpa_supplicant_mark_disassoc(wpa_s);
1828                 l2_packet_deinit(wpa_s->l2);
1829                 wpa_s->l2 = NULL;
1830 #ifdef CONFIG_IBSS_RSN
1831                 ibss_rsn_deinit(wpa_s->ibss_rsn);
1832                 wpa_s->ibss_rsn = NULL;
1833 #endif /* CONFIG_IBSS_RSN */
1834 #ifdef CONFIG_TERMINATE_ONLASTIF
1835                 /* check if last interface */
1836                 if (!any_interfaces(wpa_s->global->ifaces))
1837                         eloop_terminate();
1838 #endif /* CONFIG_TERMINATE_ONLASTIF */
1839                 break;
1840         }
1841 }
1842
1843
1844 #ifdef CONFIG_PEERKEY
1845 static void
1846 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1847                               union wpa_event_data *data)
1848 {
1849         if (data == NULL)
1850                 return;
1851         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1852 }
1853 #endif /* CONFIG_PEERKEY */
1854
1855
1856 #ifdef CONFIG_TDLS
1857 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
1858                                       union wpa_event_data *data)
1859 {
1860         if (data == NULL)
1861                 return;
1862         switch (data->tdls.oper) {
1863         case TDLS_REQUEST_SETUP:
1864                 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
1865                 break;
1866         case TDLS_REQUEST_TEARDOWN:
1867                 wpa_tdls_send_teardown(wpa_s->wpa, data->tdls.peer,
1868                                        data->tdls.reason_code);
1869                 break;
1870         }
1871 }
1872 #endif /* CONFIG_TDLS */
1873
1874
1875 #ifdef CONFIG_IEEE80211R
1876 static void
1877 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1878                                  union wpa_event_data *data)
1879 {
1880         if (data == NULL)
1881                 return;
1882
1883         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1884                                     data->ft_ies.ies_len,
1885                                     data->ft_ies.ft_action,
1886                                     data->ft_ies.target_ap,
1887                                     data->ft_ies.ric_ies,
1888                                     data->ft_ies.ric_ies_len) < 0) {
1889                 /* TODO: prevent MLME/driver from trying to associate? */
1890         }
1891 }
1892 #endif /* CONFIG_IEEE80211R */
1893
1894
1895 #ifdef CONFIG_IBSS_RSN
1896 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1897                                                 union wpa_event_data *data)
1898 {
1899         struct wpa_ssid *ssid;
1900         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1901                 return;
1902         if (data == NULL)
1903                 return;
1904         ssid = wpa_s->current_ssid;
1905         if (ssid == NULL)
1906                 return;
1907         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
1908                 return;
1909
1910         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1911 }
1912 #endif /* CONFIG_IBSS_RSN */
1913
1914
1915 #ifdef CONFIG_IEEE80211R
1916 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1917                          size_t len)
1918 {
1919         const u8 *sta_addr, *target_ap_addr;
1920         u16 status;
1921
1922         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1923         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1924                 return; /* only SME case supported for now */
1925         if (len < 1 + 2 * ETH_ALEN + 2)
1926                 return;
1927         if (data[0] != 2)
1928                 return; /* Only FT Action Response is supported for now */
1929         sta_addr = data + 1;
1930         target_ap_addr = data + 1 + ETH_ALEN;
1931         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1932         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
1933                 MACSTR " TargetAP " MACSTR " status %u",
1934                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1935
1936         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1937                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1938                         " in FT Action Response", MAC2STR(sta_addr));
1939                 return;
1940         }
1941
1942         if (status) {
1943                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
1944                         "failure (status code %d)", status);
1945                 /* TODO: report error to FT code(?) */
1946                 return;
1947         }
1948
1949         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1950                                     len - (1 + 2 * ETH_ALEN + 2), 1,
1951                                     target_ap_addr, NULL, 0) < 0)
1952                 return;
1953
1954 #ifdef CONFIG_SME
1955         {
1956                 struct wpa_bss *bss;
1957                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1958                 if (bss)
1959                         wpa_s->sme.freq = bss->freq;
1960                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1961                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1962                               WLAN_AUTH_FT);
1963         }
1964 #endif /* CONFIG_SME */
1965 }
1966 #endif /* CONFIG_IEEE80211R */
1967
1968
1969 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
1970                                                struct unprot_deauth *e)
1971 {
1972 #ifdef CONFIG_IEEE80211W
1973         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
1974                    "dropped: " MACSTR " -> " MACSTR
1975                    " (reason code %u)",
1976                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1977         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1978 #endif /* CONFIG_IEEE80211W */
1979 }
1980
1981
1982 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
1983                                                  struct unprot_disassoc *e)
1984 {
1985 #ifdef CONFIG_IEEE80211W
1986         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
1987                    "dropped: " MACSTR " -> " MACSTR
1988                    " (reason code %u)",
1989                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1990         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1991 #endif /* CONFIG_IEEE80211W */
1992 }
1993
1994
1995 static void wnm_action_rx(struct wpa_supplicant *wpa_s, struct rx_action *rx)
1996 {
1997         u8 action, mode;
1998         const u8 *pos, *end;
1999
2000         if (rx->data == NULL || rx->len == 0)
2001                 return;
2002
2003         pos = rx->data;
2004         end = pos + rx->len;
2005         action = *pos++;
2006
2007         wpa_printf(MSG_DEBUG, "WNM: RX action %u from " MACSTR,
2008                    action, MAC2STR(rx->sa));
2009         switch (action) {
2010         case WNM_BSS_TRANS_MGMT_REQ:
2011                 if (pos + 5 > end)
2012                         break;
2013                 wpa_printf(MSG_DEBUG, "WNM: BSS Transition Management "
2014                            "Request: dialog_token=%u request_mode=0x%x "
2015                            "disassoc_timer=%u validity_interval=%u",
2016                            pos[0], pos[1], WPA_GET_LE16(pos + 2), pos[4]);
2017                 mode = pos[1];
2018                 pos += 5;
2019                 if (mode & 0x08)
2020                         pos += 12; /* BSS Termination Duration */
2021                 if (mode & 0x10) {
2022                         char url[256];
2023                         if (pos + 1 > end || pos + 1 + pos[0] > end) {
2024                                 wpa_printf(MSG_DEBUG, "WNM: Invalid BSS "
2025                                            "Transition Management Request "
2026                                            "(URL)");
2027                                 break;
2028                         }
2029                         os_memcpy(url, pos + 1, pos[0]);
2030                         url[pos[0]] = '\0';
2031                         wpa_msg(wpa_s, MSG_INFO, "WNM: ESS Disassociation "
2032                                 "Imminent - session_info_url=%s", url);
2033                 }
2034                 break;
2035         }
2036 }
2037
2038
2039 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2040                           union wpa_event_data *data)
2041 {
2042         struct wpa_supplicant *wpa_s = ctx;
2043         u16 reason_code = 0;
2044         int locally_generated = 0;
2045
2046         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2047             event != EVENT_INTERFACE_ENABLED &&
2048             event != EVENT_INTERFACE_STATUS &&
2049             event != EVENT_SCHED_SCAN_STOPPED) {
2050                 wpa_dbg(wpa_s, MSG_DEBUG,
2051                         "Ignore event %s (%d) while interface is disabled",
2052                         event_to_string(event), event);
2053                 return;
2054         }
2055
2056 #ifndef CONFIG_NO_STDOUT_DEBUG
2057 {
2058         int level = MSG_DEBUG;
2059
2060         if (event == EVENT_RX_MGMT && data && data->rx_mgmt.frame &&
2061             data->rx_mgmt.frame_len >= 24) {
2062                 const struct ieee80211_hdr *hdr;
2063                 u16 fc;
2064                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2065                 fc = le_to_host16(hdr->frame_control);
2066                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2067                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2068                         level = MSG_EXCESSIVE;
2069         }
2070
2071         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2072                 event_to_string(event), event);
2073 }
2074 #endif /* CONFIG_NO_STDOUT_DEBUG */
2075
2076         switch (event) {
2077         case EVENT_AUTH:
2078                 sme_event_auth(wpa_s, data);
2079                 break;
2080         case EVENT_ASSOC:
2081                 wpa_supplicant_event_assoc(wpa_s, data);
2082                 break;
2083         case EVENT_DISASSOC:
2084                 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2085                 if (data) {
2086                         wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2087                                 data->disassoc_info.reason_code,
2088                                 data->disassoc_info.locally_generated ?
2089                                 " (locally generated)" : "");
2090                         if (data->disassoc_info.addr)
2091                                 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2092                                         MAC2STR(data->disassoc_info.addr));
2093                 }
2094 #ifdef CONFIG_AP
2095                 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
2096                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2097                                                data->disassoc_info.addr);
2098                         break;
2099                 }
2100                 if (wpa_s->ap_iface) {
2101                         wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in "
2102                                 "AP mode");
2103                         break;
2104                 }
2105 #endif /* CONFIG_AP */
2106                 if (data) {
2107                         reason_code = data->disassoc_info.reason_code;
2108                         locally_generated =
2109                                 data->disassoc_info.locally_generated;
2110                         wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2111                                     data->disassoc_info.ie,
2112                                     data->disassoc_info.ie_len);
2113 #ifdef CONFIG_P2P
2114                         wpas_p2p_disassoc_notif(
2115                                 wpa_s, data->disassoc_info.addr, reason_code,
2116                                 data->disassoc_info.ie,
2117                                 data->disassoc_info.ie_len);
2118 #endif /* CONFIG_P2P */
2119                 }
2120                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2121                         sme_event_disassoc(wpa_s, data);
2122                 /* fall through */
2123         case EVENT_DEAUTH:
2124                 if (event == EVENT_DEAUTH) {
2125                         wpa_dbg(wpa_s, MSG_DEBUG,
2126                                 "Deauthentication notification");
2127                         if (data) {
2128                                 reason_code = data->deauth_info.reason_code;
2129                                 locally_generated =
2130                                         data->deauth_info.locally_generated;
2131                                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2132                                         data->deauth_info.reason_code,
2133                                         data->deauth_info.locally_generated ?
2134                                         " (locally generated)" : "");
2135                                 if (data->deauth_info.addr) {
2136                                         wpa_dbg(wpa_s, MSG_DEBUG, " * address "
2137                                                 MACSTR,
2138                                                 MAC2STR(data->deauth_info.
2139                                                         addr));
2140                                 }
2141                                 wpa_hexdump(MSG_DEBUG,
2142                                             "Deauthentication frame IE(s)",
2143                                             data->deauth_info.ie,
2144                                             data->deauth_info.ie_len);
2145 #ifdef CONFIG_P2P
2146                                 wpas_p2p_deauth_notif(
2147                                         wpa_s, data->deauth_info.addr,
2148                                         reason_code,
2149                                         data->deauth_info.ie,
2150                                         data->deauth_info.ie_len);
2151 #endif /* CONFIG_P2P */
2152                         }
2153                 }
2154 #ifdef CONFIG_AP
2155                 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
2156                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2157                                                data->deauth_info.addr);
2158                         break;
2159                 }
2160                 if (wpa_s->ap_iface) {
2161                         wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in "
2162                                 "AP mode");
2163                         break;
2164                 }
2165 #endif /* CONFIG_AP */
2166                 wpa_supplicant_event_disassoc(wpa_s, reason_code,
2167                                               locally_generated);
2168                 break;
2169         case EVENT_MICHAEL_MIC_FAILURE:
2170                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2171                 break;
2172 #ifndef CONFIG_NO_SCAN_PROCESSING
2173         case EVENT_SCAN_RESULTS:
2174                 wpa_supplicant_event_scan_results(wpa_s, data);
2175                 break;
2176 #endif /* CONFIG_NO_SCAN_PROCESSING */
2177         case EVENT_ASSOCINFO:
2178                 wpa_supplicant_event_associnfo(wpa_s, data);
2179                 break;
2180         case EVENT_INTERFACE_STATUS:
2181                 wpa_supplicant_event_interface_status(wpa_s, data);
2182                 break;
2183         case EVENT_PMKID_CANDIDATE:
2184                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2185                 break;
2186 #ifdef CONFIG_PEERKEY
2187         case EVENT_STKSTART:
2188                 wpa_supplicant_event_stkstart(wpa_s, data);
2189                 break;
2190 #endif /* CONFIG_PEERKEY */
2191 #ifdef CONFIG_TDLS
2192         case EVENT_TDLS:
2193                 wpa_supplicant_event_tdls(wpa_s, data);
2194                 break;
2195 #endif /* CONFIG_TDLS */
2196 #ifdef CONFIG_IEEE80211R
2197         case EVENT_FT_RESPONSE:
2198                 wpa_supplicant_event_ft_response(wpa_s, data);
2199                 break;
2200 #endif /* CONFIG_IEEE80211R */
2201 #ifdef CONFIG_IBSS_RSN
2202         case EVENT_IBSS_RSN_START:
2203                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2204                 break;
2205 #endif /* CONFIG_IBSS_RSN */
2206         case EVENT_ASSOC_REJECT:
2207                 if (data->assoc_reject.bssid)
2208                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2209                                 "bssid=" MACSTR " status_code=%u",
2210                                 MAC2STR(data->assoc_reject.bssid),
2211                                 data->assoc_reject.status_code);
2212                 else
2213                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2214                                 "status_code=%u",
2215                                 data->assoc_reject.status_code);
2216                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2217                         sme_event_assoc_reject(wpa_s, data);
2218                 break;
2219         case EVENT_AUTH_TIMED_OUT:
2220                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2221                         sme_event_auth_timed_out(wpa_s, data);
2222                 break;
2223         case EVENT_ASSOC_TIMED_OUT:
2224                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2225                         sme_event_assoc_timed_out(wpa_s, data);
2226                 break;
2227         case EVENT_TX_STATUS:
2228                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2229                         " type=%d stype=%d",
2230                         MAC2STR(data->tx_status.dst),
2231                         data->tx_status.type, data->tx_status.stype);
2232 #ifdef CONFIG_AP
2233                 if (wpa_s->ap_iface == NULL) {
2234 #ifdef CONFIG_OFFCHANNEL
2235                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2236                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2237                                 offchannel_send_action_tx_status(
2238                                         wpa_s, data->tx_status.dst,
2239                                         data->tx_status.data,
2240                                         data->tx_status.data_len,
2241                                         data->tx_status.ack ?
2242                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
2243                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
2244 #endif /* CONFIG_OFFCHANNEL */
2245                         break;
2246                 }
2247 #endif /* CONFIG_AP */
2248 #ifdef CONFIG_OFFCHANNEL
2249                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2250                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2251                 /*
2252                  * Catch TX status events for Action frames we sent via group
2253                  * interface in GO mode.
2254                  */
2255                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2256                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2257                     os_memcmp(wpa_s->parent->pending_action_dst,
2258                               data->tx_status.dst, ETH_ALEN) == 0) {
2259                         offchannel_send_action_tx_status(
2260                                 wpa_s->parent, data->tx_status.dst,
2261                                 data->tx_status.data,
2262                                 data->tx_status.data_len,
2263                                 data->tx_status.ack ?
2264                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
2265                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
2266                         break;
2267                 }
2268 #endif /* CONFIG_OFFCHANNEL */
2269 #ifdef CONFIG_AP
2270                 switch (data->tx_status.type) {
2271                 case WLAN_FC_TYPE_MGMT:
2272                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2273                                       data->tx_status.data_len,
2274                                       data->tx_status.stype,
2275                                       data->tx_status.ack);
2276                         break;
2277                 case WLAN_FC_TYPE_DATA:
2278                         ap_tx_status(wpa_s, data->tx_status.dst,
2279                                      data->tx_status.data,
2280                                      data->tx_status.data_len,
2281                                      data->tx_status.ack);
2282                         break;
2283                 }
2284 #endif /* CONFIG_AP */
2285                 break;
2286 #ifdef CONFIG_AP
2287         case EVENT_EAPOL_TX_STATUS:
2288                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
2289                                    data->eapol_tx_status.data,
2290                                    data->eapol_tx_status.data_len,
2291                                    data->eapol_tx_status.ack);
2292                 break;
2293         case EVENT_DRIVER_CLIENT_POLL_OK:
2294                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
2295                 break;
2296         case EVENT_RX_FROM_UNKNOWN:
2297                 if (wpa_s->ap_iface == NULL)
2298                         break;
2299                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
2300                                        data->rx_from_unknown.wds);
2301                 break;
2302         case EVENT_RX_MGMT:
2303                 if (wpa_s->ap_iface == NULL) {
2304 #ifdef CONFIG_P2P
2305                         u16 fc, stype;
2306                         const struct ieee80211_mgmt *mgmt;
2307                         mgmt = (const struct ieee80211_mgmt *)
2308                                 data->rx_mgmt.frame;
2309                         fc = le_to_host16(mgmt->frame_control);
2310                         stype = WLAN_FC_GET_STYPE(fc);
2311                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2312                             data->rx_mgmt.frame_len > 24) {
2313                                 const u8 *src = mgmt->sa;
2314                                 const u8 *ie = mgmt->u.probe_req.variable;
2315                                 size_t ie_len = data->rx_mgmt.frame_len -
2316                                         (mgmt->u.probe_req.variable -
2317                                          data->rx_mgmt.frame);
2318                                 wpas_p2p_probe_req_rx(wpa_s, src, mgmt->da,
2319                                                       mgmt->bssid, ie, ie_len);
2320                                 break;
2321                         }
2322 #endif /* CONFIG_P2P */
2323                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2324                                 "management frame in non-AP mode");
2325                         break;
2326                 }
2327                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2328                 break;
2329 #endif /* CONFIG_AP */
2330         case EVENT_RX_ACTION:
2331                 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2332                         " Category=%u DataLen=%d freq=%d MHz",
2333                         MAC2STR(data->rx_action.sa),
2334                         data->rx_action.category, (int) data->rx_action.len,
2335                         data->rx_action.freq);
2336 #ifdef CONFIG_IEEE80211R
2337                 if (data->rx_action.category == WLAN_ACTION_FT) {
2338                         ft_rx_action(wpa_s, data->rx_action.data,
2339                                      data->rx_action.len);
2340                         break;
2341                 }
2342 #endif /* CONFIG_IEEE80211R */
2343 #ifdef CONFIG_IEEE80211W
2344 #ifdef CONFIG_SME
2345                 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2346                         sme_sa_query_rx(wpa_s, data->rx_action.sa,
2347                                         data->rx_action.data,
2348                                         data->rx_action.len);
2349                         break;
2350                 }
2351 #endif /* CONFIG_SME */
2352 #endif /* CONFIG_IEEE80211W */
2353 #ifdef CONFIG_GAS
2354                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2355                     gas_query_rx(wpa_s->gas, data->rx_action.da,
2356                                  data->rx_action.sa, data->rx_action.bssid,
2357                                  data->rx_action.data, data->rx_action.len,
2358                                  data->rx_action.freq) == 0)
2359                         break;
2360 #endif /* CONFIG_GAS */
2361                 if (data->rx_action.category == WLAN_ACTION_WNM) {
2362                         wnm_action_rx(wpa_s, &data->rx_action);
2363                         break;
2364                 }
2365 #ifdef CONFIG_TDLS
2366                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2367                     data->rx_action.len >= 4 &&
2368                     data->rx_action.data[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2369                         wpa_dbg(wpa_s, MSG_DEBUG, "TDLS: Received Discovery "
2370                                 "Response from " MACSTR,
2371                                 MAC2STR(data->rx_action.sa));
2372                         break;
2373                 }
2374 #endif /* CONFIG_TDLS */
2375 #ifdef CONFIG_P2P
2376                 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2377                                    data->rx_action.sa,
2378                                    data->rx_action.bssid,
2379                                    data->rx_action.category,
2380                                    data->rx_action.data,
2381                                    data->rx_action.len, data->rx_action.freq);
2382 #endif /* CONFIG_P2P */
2383                 break;
2384         case EVENT_RX_PROBE_REQ:
2385                 if (data->rx_probe_req.sa == NULL ||
2386                     data->rx_probe_req.ie == NULL)
2387                         break;
2388 #ifdef CONFIG_AP
2389                 if (wpa_s->ap_iface) {
2390                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2391                                              data->rx_probe_req.sa,
2392                                              data->rx_probe_req.da,
2393                                              data->rx_probe_req.bssid,
2394                                              data->rx_probe_req.ie,
2395                                              data->rx_probe_req.ie_len);
2396                         break;
2397                 }
2398 #endif /* CONFIG_AP */
2399 #ifdef CONFIG_P2P
2400                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2401                                       data->rx_probe_req.da,
2402                                       data->rx_probe_req.bssid,
2403                                       data->rx_probe_req.ie,
2404                                       data->rx_probe_req.ie_len);
2405 #endif /* CONFIG_P2P */
2406                 break;
2407         case EVENT_REMAIN_ON_CHANNEL:
2408 #ifdef CONFIG_OFFCHANNEL
2409                 offchannel_remain_on_channel_cb(
2410                         wpa_s, data->remain_on_channel.freq,
2411                         data->remain_on_channel.duration);
2412 #endif /* CONFIG_OFFCHANNEL */
2413 #ifdef CONFIG_P2P
2414                 wpas_p2p_remain_on_channel_cb(
2415                         wpa_s, data->remain_on_channel.freq,
2416                         data->remain_on_channel.duration);
2417 #endif /* CONFIG_P2P */
2418                 break;
2419         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2420 #ifdef CONFIG_OFFCHANNEL
2421                 offchannel_cancel_remain_on_channel_cb(
2422                         wpa_s, data->remain_on_channel.freq);
2423 #endif /* CONFIG_OFFCHANNEL */
2424 #ifdef CONFIG_P2P
2425                 wpas_p2p_cancel_remain_on_channel_cb(
2426                         wpa_s, data->remain_on_channel.freq);
2427 #endif /* CONFIG_P2P */
2428                 break;
2429 #ifdef CONFIG_P2P
2430         case EVENT_P2P_DEV_FOUND: {
2431                 struct p2p_peer_info peer_info;
2432
2433                 os_memset(&peer_info, 0, sizeof(peer_info));
2434                 if (data->p2p_dev_found.dev_addr)
2435                         os_memcpy(peer_info.p2p_device_addr,
2436                                   data->p2p_dev_found.dev_addr, ETH_ALEN);
2437                 if (data->p2p_dev_found.pri_dev_type)
2438                         os_memcpy(peer_info.pri_dev_type,
2439                                   data->p2p_dev_found.pri_dev_type,
2440                                   sizeof(peer_info.pri_dev_type));
2441                 if (data->p2p_dev_found.dev_name)
2442                         os_strlcpy(peer_info.device_name,
2443                                    data->p2p_dev_found.dev_name,
2444                                    sizeof(peer_info.device_name));
2445                 peer_info.config_methods = data->p2p_dev_found.config_methods;
2446                 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2447                 peer_info.group_capab = data->p2p_dev_found.group_capab;
2448
2449                 /*
2450                  * FIX: new_device=1 is not necessarily correct. We should
2451                  * maintain a P2P peer database in wpa_supplicant and update
2452                  * this information based on whether the peer is truly new.
2453                  */
2454                 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2455                 break;
2456                 }
2457         case EVENT_P2P_GO_NEG_REQ_RX:
2458                 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2459                                    data->p2p_go_neg_req_rx.dev_passwd_id);
2460                 break;
2461         case EVENT_P2P_GO_NEG_COMPLETED:
2462                 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2463                 break;
2464         case EVENT_P2P_PROV_DISC_REQUEST:
2465                 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2466                                    data->p2p_prov_disc_req.config_methods,
2467                                    data->p2p_prov_disc_req.dev_addr,
2468                                    data->p2p_prov_disc_req.pri_dev_type,
2469                                    data->p2p_prov_disc_req.dev_name,
2470                                    data->p2p_prov_disc_req.supp_config_methods,
2471                                    data->p2p_prov_disc_req.dev_capab,
2472                                    data->p2p_prov_disc_req.group_capab,
2473                                    NULL, 0);
2474                 break;
2475         case EVENT_P2P_PROV_DISC_RESPONSE:
2476                 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2477                                     data->p2p_prov_disc_resp.config_methods);
2478                 break;
2479         case EVENT_P2P_SD_REQUEST:
2480                 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2481                                 data->p2p_sd_req.sa,
2482                                 data->p2p_sd_req.dialog_token,
2483                                 data->p2p_sd_req.update_indic,
2484                                 data->p2p_sd_req.tlvs,
2485                                 data->p2p_sd_req.tlvs_len);
2486                 break;
2487         case EVENT_P2P_SD_RESPONSE:
2488                 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2489                                  data->p2p_sd_resp.update_indic,
2490                                  data->p2p_sd_resp.tlvs,
2491                                  data->p2p_sd_resp.tlvs_len);
2492                 break;
2493 #endif /* CONFIG_P2P */
2494         case EVENT_EAPOL_RX:
2495                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2496                                         data->eapol_rx.data,
2497                                         data->eapol_rx.data_len);
2498                 break;
2499         case EVENT_SIGNAL_CHANGE:
2500                 bgscan_notify_signal_change(
2501                         wpa_s, data->signal_change.above_threshold,
2502                         data->signal_change.current_signal,
2503                         data->signal_change.current_noise,
2504                         data->signal_change.current_txrate);
2505                 break;
2506         case EVENT_INTERFACE_ENABLED:
2507                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2508                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2509                         wpa_supplicant_update_mac_addr(wpa_s);
2510 #ifdef CONFIG_AP
2511                         if (!wpa_s->ap_iface) {
2512                                 wpa_supplicant_set_state(wpa_s,
2513                                                          WPA_DISCONNECTED);
2514                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2515                         } else
2516                                 wpa_supplicant_set_state(wpa_s,
2517                                                          WPA_COMPLETED);
2518 #else /* CONFIG_AP */
2519                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2520                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2521 #endif /* CONFIG_AP */
2522                 }
2523                 break;
2524         case EVENT_INTERFACE_DISABLED:
2525                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2526                 wpa_supplicant_mark_disassoc(wpa_s);
2527                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2528                 break;
2529         case EVENT_CHANNEL_LIST_CHANGED:
2530                 if (wpa_s->drv_priv == NULL)
2531                         break; /* Ignore event during drv initialization */
2532 #ifdef CONFIG_P2P
2533                 wpas_p2p_update_channel_list(wpa_s);
2534 #endif /* CONFIG_P2P */
2535                 break;
2536         case EVENT_INTERFACE_UNAVAILABLE:
2537 #ifdef CONFIG_P2P
2538                 wpas_p2p_interface_unavailable(wpa_s);
2539 #endif /* CONFIG_P2P */
2540                 break;
2541         case EVENT_BEST_CHANNEL:
2542                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2543                         "(%d %d %d)",
2544                         data->best_chan.freq_24, data->best_chan.freq_5,
2545                         data->best_chan.freq_overall);
2546                 wpa_s->best_24_freq = data->best_chan.freq_24;
2547                 wpa_s->best_5_freq = data->best_chan.freq_5;
2548                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2549 #ifdef CONFIG_P2P
2550                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2551                                               data->best_chan.freq_5,
2552                                               data->best_chan.freq_overall);
2553 #endif /* CONFIG_P2P */
2554                 break;
2555         case EVENT_UNPROT_DEAUTH:
2556                 wpa_supplicant_event_unprot_deauth(wpa_s,
2557                                                    &data->unprot_deauth);
2558                 break;
2559         case EVENT_UNPROT_DISASSOC:
2560                 wpa_supplicant_event_unprot_disassoc(wpa_s,
2561                                                      &data->unprot_disassoc);
2562                 break;
2563         case EVENT_STATION_LOW_ACK:
2564 #ifdef CONFIG_AP
2565                 if (wpa_s->ap_iface && data)
2566                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2567                                                   data->low_ack.addr);
2568 #endif /* CONFIG_AP */
2569 #ifdef CONFIG_TDLS
2570                 if (data)
2571                         wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
2572 #endif /* CONFIG_TDLS */
2573                 break;
2574         case EVENT_IBSS_PEER_LOST:
2575 #ifdef CONFIG_IBSS_RSN
2576                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
2577 #endif /* CONFIG_IBSS_RSN */
2578                 break;
2579         case EVENT_DRIVER_GTK_REKEY:
2580                 if (os_memcmp(data->driver_gtk_rekey.bssid,
2581                               wpa_s->bssid, ETH_ALEN))
2582                         break;
2583                 if (!wpa_s->wpa)
2584                         break;
2585                 wpa_sm_update_replay_ctr(wpa_s->wpa,
2586                                          data->driver_gtk_rekey.replay_ctr);
2587                 break;
2588         case EVENT_SCHED_SCAN_STOPPED:
2589                 wpa_s->sched_scanning = 0;
2590                 wpa_supplicant_notify_scanning(wpa_s, 0);
2591
2592                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2593                         break;
2594
2595                 /*
2596                  * If we timed out, start a new sched scan to continue
2597                  * searching for more SSIDs.
2598                  */
2599                 if (wpa_s->sched_scan_timed_out)
2600                         wpa_supplicant_req_sched_scan(wpa_s);
2601                 break;
2602         case EVENT_WPS_BUTTON_PUSHED:
2603 #ifdef CONFIG_WPS
2604                 wpas_wps_start_pbc(wpa_s, NULL, 0);
2605 #endif /* CONFIG_WPS */
2606                 break;
2607         default:
2608                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2609                 break;
2610         }
2611 }