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, NULL);
 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 #ifndef CONFIG_NO_ROAMING
 955         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
 956         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
 957                 MAC2STR(current_bss->bssid), current_bss->level);
 958         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
 959                 MAC2STR(selected->bssid), selected->level);
 960
 961         if (wpa_s->current_ssid->bssid_set &&
 962             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
 963             0) {
 964                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
 965                         "has preferred BSSID");
 966                 return 1;
 967         }
 968
 969         min_diff = 2;
 970         if (current_bss->level < 0) {
 971                 if (current_bss->level < -85)
 972                         min_diff = 1;
 973                 else if (current_bss->level < -80)
 974                         min_diff = 2;
 975                 else if (current_bss->level < -75)
 976                         min_diff = 3;
 977                 else if (current_bss->level < -70)
 978                         min_diff = 4;
 979                 else
 980                         min_diff = 5;
 981         }
 982         if (abs(current_bss->level - selected->level) < min_diff) {
 983                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
 984                         "in signal level");
 985                 return 0;
 986         }
 987
 988         return 1;
 989 #else /* CONFIG_NO_ROAMING */
 990         return 0;
 991 #endif /* CONFIG_NO_ROAMING */
 992 }
 993
 994
 995 /* Return < 0 if no scan results could be fetched. */
 996 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 997                                               union wpa_event_data *data)
 998 {
 999         struct wpa_bss *selected;
1000         struct wpa_ssid *ssid = NULL;
1001         struct wpa_scan_results *scan_res;
1002         int ap = 0;
1003
1004 #ifdef CONFIG_AP
1005         if (wpa_s->ap_iface)
1006                 ap = 1;
1007 #endif /* CONFIG_AP */
1008
1009         wpa_supplicant_notify_scanning(wpa_s, 0);
1010
1011 #ifdef CONFIG_P2P
1012         if (wpa_s->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
1013             wpa_s->global->p2p != NULL) {
1014                 wpa_s->p2p_cb_on_scan_complete = 0;
1015                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
1016                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
1017                                 "stopped scan processing");
1018                         return -1;
1019                 }
1020         }
1021 #endif /* CONFIG_P2P */
1022
1023         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1024                                                    data ? &data->scan_info :
1025                                                    NULL, 1);
1026         if (scan_res == NULL) {
1027                 if (wpa_s->conf->ap_scan == 2 || ap)
1028                         return -1;
1029                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1030                         "scanning again");
1031                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1032                 return -1;
1033         }
1034
1035 #ifndef CONFIG_NO_RANDOM_POOL
1036         size_t i, num;
1037         num = scan_res->num;
1038         if (num > 10)
1039                 num = 10;
1040         for (i = 0; i < num; i++) {
1041                 u8 buf[5];
1042                 struct wpa_scan_res *res = scan_res->res[i];
1043                 buf[0] = res->bssid[5];
1044                 buf[1] = res->qual & 0xff;
1045                 buf[2] = res->noise & 0xff;
1046                 buf[3] = res->level & 0xff;
1047                 buf[4] = res->tsf & 0xff;
1048                 random_add_randomness(buf, sizeof(buf));
1049         }
1050 #endif /* CONFIG_NO_RANDOM_POOL */
1051
1052         if (wpa_s->scan_res_handler) {
1053                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1054                                          struct wpa_scan_results *scan_res);
1055
1056                 scan_res_handler = wpa_s->scan_res_handler;
1057                 wpa_s->scan_res_handler = NULL;
1058                 scan_res_handler(wpa_s, scan_res);
1059
1060                 wpa_scan_results_free(scan_res);
1061                 return 0;
1062         }
1063
1064         if (ap) {
1065                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1066 #ifdef CONFIG_AP
1067                 if (wpa_s->ap_iface->scan_cb)
1068                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1069 #endif /* CONFIG_AP */
1070                 wpa_scan_results_free(scan_res);
1071                 return 0;
1072         }
1073
1074         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
1075         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1076         wpas_notify_scan_results(wpa_s);
1077
1078         wpas_notify_scan_done(wpa_s, 1);
1079
1080         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
1081                 wpa_scan_results_free(scan_res);
1082                 return 0;
1083         }
1084
1085         if (wpa_s->disconnected) {
1086                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1087                 wpa_scan_results_free(scan_res);
1088                 return 0;
1089         }
1090
1091         if (!wpas_driver_bss_selection(wpa_s) &&
1092             bgscan_notify_scan(wpa_s, scan_res) == 1) {
1093                 wpa_scan_results_free(scan_res);
1094                 return 0;
1095         }
1096
1097         selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
1098
1099         if (selected) {
1100                 int skip;
1101                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
1102                                                     scan_res);
1103                 wpa_scan_results_free(scan_res);
1104                 if (skip) {
1105                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1106                         return 0;
1107                 }
1108
1109                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1110                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1111                         return -1;
1112                 }
1113                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1114         } else {
1115                 wpa_scan_results_free(scan_res);
1116                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1117                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1118                 if (ssid) {
1119                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1120                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1121                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1122                 } else {
1123                         int timeout_sec = wpa_s->scan_interval;
1124                         int timeout_usec = 0;
1125 #ifdef CONFIG_P2P
1126                         if (wpa_s->p2p_in_provisioning) {
1127                                 /*
1128                                  * Use shorter wait during P2P Provisioning
1129                                  * state to speed up group formation.
1130                                  */
1131                                 timeout_sec = 0;
1132                                 timeout_usec = 250000;
1133                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1134                                                             timeout_usec);
1135                                 return 0;
1136                         }
1137 #endif /* CONFIG_P2P */
1138                         if (wpa_supplicant_req_sched_scan(wpa_s))
1139                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1140                                                             timeout_usec);
1141                 }
1142         }
1143         return 0;
1144 }
1145
1146
1147 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1148                                               union wpa_event_data *data)
1149 {
1150         const char *rn, *rn2;
1151         struct wpa_supplicant *ifs;
1152
1153         if (_wpa_supplicant_event_scan_results(wpa_s, data) < 0) {
1154                 /*
1155                  * If no scan results could be fetched, then no need to
1156                  * notify those interfaces that did not actually request
1157                  * this scan.
1158                  */
1159                 return;
1160         }
1161
1162         /*
1163          * Check other interfaces to see if they have the same radio-name. If
1164          * so, they get updated with this same scan info.
1165          */
1166         if (!wpa_s->driver->get_radio_name)
1167                 return;
1168
1169         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1170         if (rn == NULL || rn[0] == '\0')
1171                 return;
1172
1173         wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1174                 "sharing same radio (%s) in event_scan_results", rn);
1175
1176         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1177                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1178                         continue;
1179
1180                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1181                 if (rn2 && os_strcmp(rn, rn2) == 0) {
1182                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1183                                    "sibling", ifs->ifname);
1184                         _wpa_supplicant_event_scan_results(ifs, data);
1185                 }
1186         }
1187 }
1188
1189 #endif /* CONFIG_NO_SCAN_PROCESSING */
1190
1191
1192 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1193                                           union wpa_event_data *data)
1194 {
1195         int l, len, found = 0, wpa_found, rsn_found;
1196         const u8 *p;
1197
1198         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1199         if (data->assoc_info.req_ies)
1200                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1201                             data->assoc_info.req_ies_len);
1202         if (data->assoc_info.resp_ies) {
1203                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1204                             data->assoc_info.resp_ies_len);
1205 #ifdef CONFIG_TDLS
1206                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1207                                         data->assoc_info.resp_ies_len);
1208 #endif /* CONFIG_TDLS */
1209         }
1210         if (data->assoc_info.beacon_ies)
1211                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1212                             data->assoc_info.beacon_ies,
1213                             data->assoc_info.beacon_ies_len);
1214         if (data->assoc_info.freq)
1215                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1216                         data->assoc_info.freq);
1217
1218         p = data->assoc_info.req_ies;
1219         l = data->assoc_info.req_ies_len;
1220
1221         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1222         while (p && l >= 2) {
1223                 len = p[1] + 2;
1224                 if (len > l) {
1225                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1226                                     p, l);
1227                         break;
1228                 }
1229                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1230                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1231                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1232                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1233                                 break;
1234                         found = 1;
1235                         wpa_find_assoc_pmkid(wpa_s);
1236                         break;
1237                 }
1238                 l -= len;
1239                 p += len;
1240         }
1241         if (!found && data->assoc_info.req_ies)
1242                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1243
1244 #ifdef CONFIG_IEEE80211R
1245 #ifdef CONFIG_SME
1246         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1247                 u8 bssid[ETH_ALEN];
1248                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1249                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1250                                                  data->assoc_info.resp_ies,
1251                                                  data->assoc_info.resp_ies_len,
1252                                                  bssid) < 0) {
1253                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1254                                 "Reassociation Response failed");
1255                         wpa_supplicant_deauthenticate(
1256                                 wpa_s, WLAN_REASON_INVALID_IE);
1257                         return -1;
1258                 }
1259         }
1260
1261         p = data->assoc_info.resp_ies;
1262         l = data->assoc_info.resp_ies_len;
1263
1264 #ifdef CONFIG_WPS_STRICT
1265         if (p && wpa_s->current_ssid &&
1266             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1267                 struct wpabuf *wps;
1268                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1269                 if (wps == NULL) {
1270                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1271                                 "include WPS IE in (Re)Association Response");
1272                         return -1;
1273                 }
1274
1275                 if (wps_validate_assoc_resp(wps) < 0) {
1276                         wpabuf_free(wps);
1277                         wpa_supplicant_deauthenticate(
1278                                 wpa_s, WLAN_REASON_INVALID_IE);
1279                         return -1;
1280                 }
1281                 wpabuf_free(wps);
1282         }
1283 #endif /* CONFIG_WPS_STRICT */
1284
1285         /* Go through the IEs and make a copy of the MDIE, if present. */
1286         while (p && l >= 2) {
1287                 len = p[1] + 2;
1288                 if (len > l) {
1289                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1290                                     p, l);
1291                         break;
1292                 }
1293                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1294                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1295                         wpa_s->sme.ft_used = 1;
1296                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1297                                   MOBILITY_DOMAIN_ID_LEN);
1298                         break;
1299                 }
1300                 l -= len;
1301                 p += len;
1302         }
1303 #endif /* CONFIG_SME */
1304
1305         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1306                              data->assoc_info.resp_ies_len);
1307 #endif /* CONFIG_IEEE80211R */
1308
1309         /* WPA/RSN IE from Beacon/ProbeResp */
1310         p = data->assoc_info.beacon_ies;
1311         l = data->assoc_info.beacon_ies_len;
1312
1313         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1314          */
1315         wpa_found = rsn_found = 0;
1316         while (p && l >= 2) {
1317                 len = p[1] + 2;
1318                 if (len > l) {
1319                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1320                                     p, l);
1321                         break;
1322                 }
1323                 if (!wpa_found &&
1324                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1325                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1326                         wpa_found = 1;
1327                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1328                 }
1329
1330                 if (!rsn_found &&
1331                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1332                         rsn_found = 1;
1333                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1334                 }
1335
1336                 l -= len;
1337                 p += len;
1338         }
1339
1340         if (!wpa_found && data->assoc_info.beacon_ies)
1341                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1342         if (!rsn_found && data->assoc_info.beacon_ies)
1343                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1344         if (wpa_found || rsn_found)
1345                 wpa_s->ap_ies_from_associnfo = 1;
1346
1347         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1348             wpa_s->assoc_freq != data->assoc_info.freq) {
1349                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1350                            "%u to %u MHz",
1351                            wpa_s->assoc_freq, data->assoc_info.freq);
1352                 wpa_supplicant_update_scan_results(wpa_s);
1353         }
1354
1355         wpa_s->assoc_freq = data->assoc_info.freq;
1356
1357         return 0;
1358 }
1359
1360
1361 static struct wpa_bss * wpa_supplicant_get_new_bss(
1362         struct wpa_supplicant *wpa_s, const u8 *bssid)
1363 {
1364         struct wpa_bss *bss = NULL;
1365         struct wpa_ssid *ssid = wpa_s->current_ssid;
1366
1367         if (ssid->ssid_len > 0)
1368                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
1369         if (!bss)
1370                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1371
1372         return bss;
1373 }
1374
1375
1376 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1377 {
1378         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1379
1380         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1381                 return -1;
1382
1383         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1384                 return 0;
1385
1386         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1387                                         WPA_IE_VENDOR_TYPE);
1388         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1389
1390         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1391                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1392             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1393                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1394                 return -1;
1395
1396         return 0;
1397 }
1398
1399
1400 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1401                                        union wpa_event_data *data)
1402 {
1403         u8 bssid[ETH_ALEN];
1404         int ft_completed;
1405         int bssid_changed;
1406         struct wpa_driver_capa capa;
1407
1408 #ifdef CONFIG_AP
1409         if (wpa_s->ap_iface) {
1410                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1411                                     data->assoc_info.addr,
1412                                     data->assoc_info.req_ies,
1413                                     data->assoc_info.req_ies_len,
1414                                     data->assoc_info.reassoc);
1415                 return;
1416         }
1417 #endif /* CONFIG_AP */
1418
1419         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1420         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1421                 return;
1422
1423         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1424         if (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1425             os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1426                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1427                         MACSTR, MAC2STR(bssid));
1428                 random_add_randomness(bssid, ETH_ALEN);
1429                 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1430                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1431                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1432                 if (bssid_changed)
1433                         wpas_notify_bssid_changed(wpa_s);
1434
1435                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1436                         wpa_clear_keys(wpa_s, bssid);
1437                 }
1438                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1439                         wpa_supplicant_disassociate(
1440                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1441                         return;
1442                 }
1443                 if (wpa_s->current_ssid) {
1444                         struct wpa_bss *bss = NULL;
1445
1446                         bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1447                         if (!bss) {
1448                                 wpa_supplicant_update_scan_results(wpa_s);
1449
1450                                 /* Get the BSS from the new scan results */
1451                                 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1452                         }
1453
1454                         if (bss)
1455                                 wpa_s->current_bss = bss;
1456                 }
1457
1458                 if (wpa_s->conf->ap_scan == 1 &&
1459                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1460                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1461                                 wpa_msg(wpa_s, MSG_WARNING,
1462                                         "WPA/RSN IEs not updated");
1463                 }
1464         }
1465
1466 #ifdef CONFIG_SME
1467         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1468         wpa_s->sme.prev_bssid_set = 1;
1469 #endif /* CONFIG_SME */
1470
1471         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1472         if (wpa_s->current_ssid) {
1473                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1474                  * initialized before association, but for other modes,
1475                  * initialize PC/SC here, if the current configuration needs
1476                  * smartcard or SIM/USIM. */
1477                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1478         }
1479         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1480         if (wpa_s->l2)
1481                 l2_packet_notify_auth_start(wpa_s->l2);
1482
1483         /*
1484          * Set portEnabled first to FALSE in order to get EAP state machine out
1485          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1486          * state machine may transit to AUTHENTICATING state based on obsolete
1487          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1488          * AUTHENTICATED without ever giving chance to EAP state machine to
1489          * reset the state.
1490          */
1491         if (!ft_completed) {
1492                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1493                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1494         }
1495         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1496                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1497         /* 802.1X::portControl = Auto */
1498         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1499         wpa_s->eapol_received = 0;
1500         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1501             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1502             (wpa_s->current_ssid &&
1503              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1504                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1505                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1506         } else if (!ft_completed) {
1507                 /* Timeout for receiving the first EAPOL packet */
1508                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1509         }
1510         wpa_supplicant_cancel_scan(wpa_s);
1511
1512         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1513             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1514                 /*
1515                  * We are done; the driver will take care of RSN 4-way
1516                  * handshake.
1517                  */
1518                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1519                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1520                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1521                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1522         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1523                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1524                 /*
1525                  * The driver will take care of RSN 4-way handshake, so we need
1526                  * to allow EAPOL supplicant to complete its work without
1527                  * waiting for WPA supplicant.
1528                  */
1529                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1530         } else if (ft_completed) {
1531                 /*
1532                  * FT protocol completed - make sure EAPOL state machine ends
1533                  * up in authenticated.
1534                  */
1535                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1536                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1537                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1538                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1539         }
1540
1541         if (wpa_s->pending_eapol_rx) {
1542                 struct os_time now, age;
1543                 os_get_time(&now);
1544                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1545                 if (age.sec == 0 && age.usec < 100000 &&
1546                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1547                     0) {
1548                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1549                                 "frame that was received just before "
1550                                 "association notification");
1551                         wpa_supplicant_rx_eapol(
1552                                 wpa_s, wpa_s->pending_eapol_rx_src,
1553                                 wpabuf_head(wpa_s->pending_eapol_rx),
1554                                 wpabuf_len(wpa_s->pending_eapol_rx));
1555                 }
1556                 wpabuf_free(wpa_s->pending_eapol_rx);
1557                 wpa_s->pending_eapol_rx = NULL;
1558         }
1559
1560         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1561              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1562             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1563             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1564                 /* Set static WEP keys again */
1565                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1566         }
1567
1568 #ifdef CONFIG_IBSS_RSN
1569         if (wpa_s->current_ssid &&
1570             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1571             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1572             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1573             wpa_s->ibss_rsn == NULL) {
1574                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1575                 if (!wpa_s->ibss_rsn) {
1576                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1577                         wpa_supplicant_deauthenticate(
1578                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1579                         return;
1580                 }
1581
1582                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1583         }
1584 #endif /* CONFIG_IBSS_RSN */
1585 }
1586
1587
1588 static int disconnect_reason_recoverable(u16 reason_code)
1589 {
1590         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
1591                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
1592                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
1593 }
1594
1595
1596 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1597                                           u16 reason_code,
1598                                           int locally_generated)
1599 {
1600         const u8 *bssid;
1601         int authenticating;
1602         u8 prev_pending_bssid[ETH_ALEN];
1603         struct wpa_bss *fast_reconnect = NULL;
1604         struct wpa_ssid *fast_reconnect_ssid = NULL;
1605
1606         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1607         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1608
1609         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1610                 /*
1611                  * At least Host AP driver and a Prism3 card seemed to be
1612                  * generating streams of disconnected events when configuring
1613                  * IBSS for WPA-None. Ignore them for now.
1614                  */
1615                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1616                         "IBSS/WPA-None mode");
1617                 return;
1618         }
1619
1620         if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1621             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1622                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1623                         "pre-shared key may be incorrect");
1624         }
1625         if (!wpa_s->auto_reconnect_disabled ||
1626             wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1627                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
1628                         "reconnect (wps=%d wpa_state=%d)",
1629                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
1630                         wpa_s->wpa_state);
1631                 if (wpa_s->wpa_state == WPA_COMPLETED &&
1632                     wpa_s->current_ssid &&
1633                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
1634                     !locally_generated &&
1635                     disconnect_reason_recoverable(reason_code)) {
1636                         /*
1637                          * It looks like the AP has dropped association with
1638                          * us, but could allow us to get back in. Try to
1639                          * reconnect to the same BSS without full scan to save
1640                          * time for some common cases.
1641                          */
1642                         fast_reconnect = wpa_s->current_bss;
1643                         fast_reconnect_ssid = wpa_s->current_ssid;
1644                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1645                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1646                 else
1647                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
1648                                 "immediate scan");
1649         } else {
1650                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
1651                         "try to re-connect");
1652                 wpa_s->reassociate = 0;
1653                 wpa_s->disconnected = 1;
1654                 wpa_supplicant_cancel_sched_scan(wpa_s);
1655         }
1656         bssid = wpa_s->bssid;
1657         if (is_zero_ether_addr(bssid))
1658                 bssid = wpa_s->pending_bssid;
1659         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
1660                 wpas_connection_failed(wpa_s, bssid);
1661         wpa_sm_notify_disassoc(wpa_s->wpa);
1662         if (!is_zero_ether_addr(bssid) ||
1663             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1664                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1665                         " reason=%d%s",
1666                         MAC2STR(bssid), reason_code,
1667                         locally_generated ? " locally_generated=1" : "");
1668         }
1669         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1670                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1671                 wpa_s->keys_cleared = 0;
1672                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1673         }
1674         wpa_supplicant_mark_disassoc(wpa_s);
1675
1676         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1677                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
1678
1679         if (fast_reconnect) {
1680 #ifndef CONFIG_NO_SCAN_PROCESSING
1681                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
1682                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
1683                                            fast_reconnect_ssid) < 0) {
1684                         /* Recover through full scan */
1685                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1686                 }
1687 #endif /* CONFIG_NO_SCAN_PROCESSING */
1688         }
1689 }
1690
1691
1692 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1693 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
1694 {
1695         struct wpa_supplicant *wpa_s = eloop_ctx;
1696
1697         if (!wpa_s->pending_mic_error_report)
1698                 return;
1699
1700         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
1701         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1702         wpa_s->pending_mic_error_report = 0;
1703 }
1704 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1705
1706
1707 static void
1708 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1709                                          union wpa_event_data *data)
1710 {
1711         int pairwise;
1712         struct os_time t;
1713
1714         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1715         pairwise = (data && data->michael_mic_failure.unicast);
1716         os_get_time(&t);
1717         if ((wpa_s->last_michael_mic_error &&
1718              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1719             wpa_s->pending_mic_error_report) {
1720                 if (wpa_s->pending_mic_error_report) {
1721                         /*
1722                          * Send the pending MIC error report immediately since
1723                          * we are going to start countermeasures and AP better
1724                          * do the same.
1725                          */
1726                         wpa_sm_key_request(wpa_s->wpa, 1,
1727                                            wpa_s->pending_mic_error_pairwise);
1728                 }
1729
1730                 /* Send the new MIC error report immediately since we are going
1731                  * to start countermeasures and AP better do the same.
1732                  */
1733                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1734
1735                 /* initialize countermeasures */
1736                 wpa_s->countermeasures = 1;
1737
1738                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
1739
1740                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1741
1742                 /*
1743                  * Need to wait for completion of request frame. We do not get
1744                  * any callback for the message completion, so just wait a
1745                  * short while and hope for the best. */
1746                 os_sleep(0, 10000);
1747
1748                 wpa_drv_set_countermeasures(wpa_s, 1);
1749                 wpa_supplicant_deauthenticate(wpa_s,
1750                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
1751                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1752                                      wpa_s, NULL);
1753                 eloop_register_timeout(60, 0,
1754                                        wpa_supplicant_stop_countermeasures,
1755                                        wpa_s, NULL);
1756                 /* TODO: mark the AP rejected for 60 second. STA is
1757                  * allowed to associate with another AP.. */
1758         } else {
1759 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1760                 if (wpa_s->mic_errors_seen) {
1761                         /*
1762                          * Reduce the effectiveness of Michael MIC error
1763                          * reports as a means for attacking against TKIP if
1764                          * more than one MIC failure is noticed with the same
1765                          * PTK. We delay the transmission of the reports by a
1766                          * random time between 0 and 60 seconds in order to
1767                          * force the attacker wait 60 seconds before getting
1768                          * the information on whether a frame resulted in a MIC
1769                          * failure.
1770                          */
1771                         u8 rval[4];
1772                         int sec;
1773
1774                         if (os_get_random(rval, sizeof(rval)) < 0)
1775                                 sec = os_random() % 60;
1776                         else
1777                                 sec = WPA_GET_BE32(rval) % 60;
1778                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
1779                                 "report %d seconds", sec);
1780                         wpa_s->pending_mic_error_report = 1;
1781                         wpa_s->pending_mic_error_pairwise = pairwise;
1782                         eloop_cancel_timeout(
1783                                 wpa_supplicant_delayed_mic_error_report,
1784                                 wpa_s, NULL);
1785                         eloop_register_timeout(
1786                                 sec, os_random() % 1000000,
1787                                 wpa_supplicant_delayed_mic_error_report,
1788                                 wpa_s, NULL);
1789                 } else {
1790                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1791                 }
1792 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1793                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1794 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1795         }
1796         wpa_s->last_michael_mic_error = t.sec;
1797         wpa_s->mic_errors_seen++;
1798 }
1799
1800
1801 #ifdef CONFIG_TERMINATE_ONLASTIF
1802 static int any_interfaces(struct wpa_supplicant *head)
1803 {
1804         struct wpa_supplicant *wpa_s;
1805
1806         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1807                 if (!wpa_s->interface_removed)
1808                         return 1;
1809         return 0;
1810 }
1811 #endif /* CONFIG_TERMINATE_ONLASTIF */
1812
1813
1814 static void
1815 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1816                                       union wpa_event_data *data)
1817 {
1818         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1819                 return;
1820
1821         switch (data->interface_status.ievent) {
1822         case EVENT_INTERFACE_ADDED:
1823                 if (!wpa_s->interface_removed)
1824                         break;
1825                 wpa_s->interface_removed = 0;
1826                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
1827                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1828                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
1829                                 "driver after interface was added");
1830                 }
1831                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1832                 break;
1833         case EVENT_INTERFACE_REMOVED:
1834                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
1835                 wpa_s->interface_removed = 1;
1836                 wpa_supplicant_mark_disassoc(wpa_s);
1837                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
1838                 l2_packet_deinit(wpa_s->l2);
1839                 wpa_s->l2 = NULL;
1840 #ifdef CONFIG_IBSS_RSN
1841                 ibss_rsn_deinit(wpa_s->ibss_rsn);
1842                 wpa_s->ibss_rsn = NULL;
1843 #endif /* CONFIG_IBSS_RSN */
1844 #ifdef CONFIG_TERMINATE_ONLASTIF
1845                 /* check if last interface */
1846                 if (!any_interfaces(wpa_s->global->ifaces))
1847                         eloop_terminate();
1848 #endif /* CONFIG_TERMINATE_ONLASTIF */
1849                 break;
1850         }
1851 }
1852
1853
1854 #ifdef CONFIG_PEERKEY
1855 static void
1856 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1857                               union wpa_event_data *data)
1858 {
1859         if (data == NULL)
1860                 return;
1861         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1862 }
1863 #endif /* CONFIG_PEERKEY */
1864
1865
1866 #ifdef CONFIG_TDLS
1867 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
1868                                       union wpa_event_data *data)
1869 {
1870         if (data == NULL)
1871                 return;
1872         switch (data->tdls.oper) {
1873         case TDLS_REQUEST_SETUP:
1874                 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
1875                 break;
1876         case TDLS_REQUEST_TEARDOWN:
1877                 wpa_tdls_send_teardown(wpa_s->wpa, data->tdls.peer,
1878                                        data->tdls.reason_code);
1879                 break;
1880         }
1881 }
1882 #endif /* CONFIG_TDLS */
1883
1884
1885 #ifdef CONFIG_IEEE80211R
1886 static void
1887 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1888                                  union wpa_event_data *data)
1889 {
1890         if (data == NULL)
1891                 return;
1892
1893         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1894                                     data->ft_ies.ies_len,
1895                                     data->ft_ies.ft_action,
1896                                     data->ft_ies.target_ap,
1897                                     data->ft_ies.ric_ies,
1898                                     data->ft_ies.ric_ies_len) < 0) {
1899                 /* TODO: prevent MLME/driver from trying to associate? */
1900         }
1901 }
1902 #endif /* CONFIG_IEEE80211R */
1903
1904
1905 #ifdef CONFIG_IBSS_RSN
1906 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1907                                                 union wpa_event_data *data)
1908 {
1909         struct wpa_ssid *ssid;
1910         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1911                 return;
1912         if (data == NULL)
1913                 return;
1914         ssid = wpa_s->current_ssid;
1915         if (ssid == NULL)
1916                 return;
1917         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
1918                 return;
1919
1920         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1921 }
1922 #endif /* CONFIG_IBSS_RSN */
1923
1924
1925 #ifdef CONFIG_IEEE80211R
1926 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1927                          size_t len)
1928 {
1929         const u8 *sta_addr, *target_ap_addr;
1930         u16 status;
1931
1932         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1933         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1934                 return; /* only SME case supported for now */
1935         if (len < 1 + 2 * ETH_ALEN + 2)
1936                 return;
1937         if (data[0] != 2)
1938                 return; /* Only FT Action Response is supported for now */
1939         sta_addr = data + 1;
1940         target_ap_addr = data + 1 + ETH_ALEN;
1941         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1942         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
1943                 MACSTR " TargetAP " MACSTR " status %u",
1944                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1945
1946         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1947                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1948                         " in FT Action Response", MAC2STR(sta_addr));
1949                 return;
1950         }
1951
1952         if (status) {
1953                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
1954                         "failure (status code %d)", status);
1955                 /* TODO: report error to FT code(?) */
1956                 return;
1957         }
1958
1959         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1960                                     len - (1 + 2 * ETH_ALEN + 2), 1,
1961                                     target_ap_addr, NULL, 0) < 0)
1962                 return;
1963
1964 #ifdef CONFIG_SME
1965         {
1966                 struct wpa_bss *bss;
1967                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1968                 if (bss)
1969                         wpa_s->sme.freq = bss->freq;
1970                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1971                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1972                               WLAN_AUTH_FT);
1973         }
1974 #endif /* CONFIG_SME */
1975 }
1976 #endif /* CONFIG_IEEE80211R */
1977
1978
1979 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
1980                                                struct unprot_deauth *e)
1981 {
1982 #ifdef CONFIG_IEEE80211W
1983         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
1984                    "dropped: " MACSTR " -> " MACSTR
1985                    " (reason code %u)",
1986                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1987         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1988 #endif /* CONFIG_IEEE80211W */
1989 }
1990
1991
1992 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
1993                                                  struct unprot_disassoc *e)
1994 {
1995 #ifdef CONFIG_IEEE80211W
1996         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
1997                    "dropped: " MACSTR " -> " MACSTR
1998                    " (reason code %u)",
1999                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2000         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2001 #endif /* CONFIG_IEEE80211W */
2002 }
2003
2004
2005 static void wnm_action_rx(struct wpa_supplicant *wpa_s, struct rx_action *rx)
2006 {
2007         u8 action, mode;
2008         const u8 *pos, *end;
2009
2010         if (rx->data == NULL || rx->len == 0)
2011                 return;
2012
2013         pos = rx->data;
2014         end = pos + rx->len;
2015         action = *pos++;
2016
2017         wpa_printf(MSG_DEBUG, "WNM: RX action %u from " MACSTR,
2018                    action, MAC2STR(rx->sa));
2019         switch (action) {
2020         case WNM_BSS_TRANS_MGMT_REQ:
2021                 if (pos + 5 > end)
2022                         break;
2023                 wpa_printf(MSG_DEBUG, "WNM: BSS Transition Management "
2024                            "Request: dialog_token=%u request_mode=0x%x "
2025                            "disassoc_timer=%u validity_interval=%u",
2026                            pos[0], pos[1], WPA_GET_LE16(pos + 2), pos[4]);
2027                 mode = pos[1];
2028                 pos += 5;
2029                 if (mode & 0x08)
2030                         pos += 12; /* BSS Termination Duration */
2031                 if (mode & 0x10) {
2032                         char url[256];
2033                         if (pos + 1 > end || pos + 1 + pos[0] > end) {
2034                                 wpa_printf(MSG_DEBUG, "WNM: Invalid BSS "
2035                                            "Transition Management Request "
2036                                            "(URL)");
2037                                 break;
2038                         }
2039                         os_memcpy(url, pos + 1, pos[0]);
2040                         url[pos[0]] = '\0';
2041                         wpa_msg(wpa_s, MSG_INFO, "WNM: ESS Disassociation "
2042                                 "Imminent - session_info_url=%s", url);
2043                 }
2044                 break;
2045         }
2046 }
2047
2048
2049 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2050                           union wpa_event_data *data)
2051 {
2052         struct wpa_supplicant *wpa_s = ctx;
2053         u16 reason_code = 0;
2054         int locally_generated = 0;
2055
2056         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2057             event != EVENT_INTERFACE_ENABLED &&
2058             event != EVENT_INTERFACE_STATUS &&
2059             event != EVENT_SCHED_SCAN_STOPPED) {
2060                 wpa_dbg(wpa_s, MSG_DEBUG,
2061                         "Ignore event %s (%d) while interface is disabled",
2062                         event_to_string(event), event);
2063                 return;
2064         }
2065
2066 #ifndef CONFIG_NO_STDOUT_DEBUG
2067 {
2068         int level = MSG_DEBUG;
2069
2070         if (event == EVENT_RX_MGMT && data && data->rx_mgmt.frame &&
2071             data->rx_mgmt.frame_len >= 24) {
2072                 const struct ieee80211_hdr *hdr;
2073                 u16 fc;
2074                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2075                 fc = le_to_host16(hdr->frame_control);
2076                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2077                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2078                         level = MSG_EXCESSIVE;
2079         }
2080
2081         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2082                 event_to_string(event), event);
2083 }
2084 #endif /* CONFIG_NO_STDOUT_DEBUG */
2085
2086         switch (event) {
2087         case EVENT_AUTH:
2088                 sme_event_auth(wpa_s, data);
2089                 break;
2090         case EVENT_ASSOC:
2091                 wpa_supplicant_event_assoc(wpa_s, data);
2092                 break;
2093         case EVENT_DISASSOC:
2094                 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2095                 if (data) {
2096                         wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2097                                 data->disassoc_info.reason_code,
2098                                 data->disassoc_info.locally_generated ?
2099                                 " (locally generated)" : "");
2100                         if (data->disassoc_info.addr)
2101                                 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2102                                         MAC2STR(data->disassoc_info.addr));
2103                 }
2104 #ifdef CONFIG_AP
2105                 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
2106                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2107                                                data->disassoc_info.addr);
2108                         break;
2109                 }
2110                 if (wpa_s->ap_iface) {
2111                         wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in "
2112                                 "AP mode");
2113                         break;
2114                 }
2115 #endif /* CONFIG_AP */
2116                 if (data) {
2117                         reason_code = data->disassoc_info.reason_code;
2118                         locally_generated =
2119                                 data->disassoc_info.locally_generated;
2120                         wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2121                                     data->disassoc_info.ie,
2122                                     data->disassoc_info.ie_len);
2123 #ifdef CONFIG_P2P
2124                         wpas_p2p_disassoc_notif(
2125                                 wpa_s, data->disassoc_info.addr, reason_code,
2126                                 data->disassoc_info.ie,
2127                                 data->disassoc_info.ie_len);
2128 #endif /* CONFIG_P2P */
2129                 }
2130                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2131                         sme_event_disassoc(wpa_s, data);
2132                 /* fall through */
2133         case EVENT_DEAUTH:
2134                 if (event == EVENT_DEAUTH) {
2135                         wpa_dbg(wpa_s, MSG_DEBUG,
2136                                 "Deauthentication notification");
2137                         if (data) {
2138                                 reason_code = data->deauth_info.reason_code;
2139                                 locally_generated =
2140                                         data->deauth_info.locally_generated;
2141                                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2142                                         data->deauth_info.reason_code,
2143                                         data->deauth_info.locally_generated ?
2144                                         " (locally generated)" : "");
2145                                 if (data->deauth_info.addr) {
2146                                         wpa_dbg(wpa_s, MSG_DEBUG, " * address "
2147                                                 MACSTR,
2148                                                 MAC2STR(data->deauth_info.
2149                                                         addr));
2150                                 }
2151                                 wpa_hexdump(MSG_DEBUG,
2152                                             "Deauthentication frame IE(s)",
2153                                             data->deauth_info.ie,
2154                                             data->deauth_info.ie_len);
2155 #ifdef CONFIG_P2P
2156                                 wpas_p2p_deauth_notif(
2157                                         wpa_s, data->deauth_info.addr,
2158                                         reason_code,
2159                                         data->deauth_info.ie,
2160                                         data->deauth_info.ie_len);
2161 #endif /* CONFIG_P2P */
2162                         }
2163                 }
2164 #ifdef CONFIG_AP
2165                 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
2166                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2167                                                data->deauth_info.addr);
2168                         break;
2169                 }
2170                 if (wpa_s->ap_iface) {
2171                         wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in "
2172                                 "AP mode");
2173                         break;
2174                 }
2175 #endif /* CONFIG_AP */
2176                 wpa_supplicant_event_disassoc(wpa_s, reason_code,
2177                                               locally_generated);
2178                 break;
2179         case EVENT_MICHAEL_MIC_FAILURE:
2180                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2181                 break;
2182 #ifndef CONFIG_NO_SCAN_PROCESSING
2183         case EVENT_SCAN_RESULTS:
2184                 wpa_supplicant_event_scan_results(wpa_s, data);
2185                 break;
2186 #endif /* CONFIG_NO_SCAN_PROCESSING */
2187         case EVENT_ASSOCINFO:
2188                 wpa_supplicant_event_associnfo(wpa_s, data);
2189                 break;
2190         case EVENT_INTERFACE_STATUS:
2191                 wpa_supplicant_event_interface_status(wpa_s, data);
2192                 break;
2193         case EVENT_PMKID_CANDIDATE:
2194                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2195                 break;
2196 #ifdef CONFIG_PEERKEY
2197         case EVENT_STKSTART:
2198                 wpa_supplicant_event_stkstart(wpa_s, data);
2199                 break;
2200 #endif /* CONFIG_PEERKEY */
2201 #ifdef CONFIG_TDLS
2202         case EVENT_TDLS:
2203                 wpa_supplicant_event_tdls(wpa_s, data);
2204                 break;
2205 #endif /* CONFIG_TDLS */
2206 #ifdef CONFIG_IEEE80211R
2207         case EVENT_FT_RESPONSE:
2208                 wpa_supplicant_event_ft_response(wpa_s, data);
2209                 break;
2210 #endif /* CONFIG_IEEE80211R */
2211 #ifdef CONFIG_IBSS_RSN
2212         case EVENT_IBSS_RSN_START:
2213                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2214                 break;
2215 #endif /* CONFIG_IBSS_RSN */
2216         case EVENT_ASSOC_REJECT:
2217                 if (data->assoc_reject.bssid)
2218                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2219                                 "bssid=" MACSTR " status_code=%u",
2220                                 MAC2STR(data->assoc_reject.bssid),
2221                                 data->assoc_reject.status_code);
2222                 else
2223                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2224                                 "status_code=%u",
2225                                 data->assoc_reject.status_code);
2226                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2227                         sme_event_assoc_reject(wpa_s, data);
2228                 break;
2229         case EVENT_AUTH_TIMED_OUT:
2230                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2231                         sme_event_auth_timed_out(wpa_s, data);
2232                 break;
2233         case EVENT_ASSOC_TIMED_OUT:
2234                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2235                         sme_event_assoc_timed_out(wpa_s, data);
2236                 break;
2237         case EVENT_TX_STATUS:
2238                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2239                         " type=%d stype=%d",
2240                         MAC2STR(data->tx_status.dst),
2241                         data->tx_status.type, data->tx_status.stype);
2242 #ifdef CONFIG_AP
2243                 if (wpa_s->ap_iface == NULL) {
2244 #ifdef CONFIG_OFFCHANNEL
2245                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2246                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2247                                 offchannel_send_action_tx_status(
2248                                         wpa_s, data->tx_status.dst,
2249                                         data->tx_status.data,
2250                                         data->tx_status.data_len,
2251                                         data->tx_status.ack ?
2252                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
2253                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
2254 #endif /* CONFIG_OFFCHANNEL */
2255                         break;
2256                 }
2257 #endif /* CONFIG_AP */
2258 #ifdef CONFIG_OFFCHANNEL
2259                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2260                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2261                 /*
2262                  * Catch TX status events for Action frames we sent via group
2263                  * interface in GO mode.
2264                  */
2265                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2266                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2267                     os_memcmp(wpa_s->parent->pending_action_dst,
2268                               data->tx_status.dst, ETH_ALEN) == 0) {
2269                         offchannel_send_action_tx_status(
2270                                 wpa_s->parent, data->tx_status.dst,
2271                                 data->tx_status.data,
2272                                 data->tx_status.data_len,
2273                                 data->tx_status.ack ?
2274                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
2275                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
2276                         break;
2277                 }
2278 #endif /* CONFIG_OFFCHANNEL */
2279 #ifdef CONFIG_AP
2280                 switch (data->tx_status.type) {
2281                 case WLAN_FC_TYPE_MGMT:
2282                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2283                                       data->tx_status.data_len,
2284                                       data->tx_status.stype,
2285                                       data->tx_status.ack);
2286                         break;
2287                 case WLAN_FC_TYPE_DATA:
2288                         ap_tx_status(wpa_s, data->tx_status.dst,
2289                                      data->tx_status.data,
2290                                      data->tx_status.data_len,
2291                                      data->tx_status.ack);
2292                         break;
2293                 }
2294 #endif /* CONFIG_AP */
2295                 break;
2296 #ifdef CONFIG_AP
2297         case EVENT_EAPOL_TX_STATUS:
2298                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
2299                                    data->eapol_tx_status.data,
2300                                    data->eapol_tx_status.data_len,
2301                                    data->eapol_tx_status.ack);
2302                 break;
2303         case EVENT_DRIVER_CLIENT_POLL_OK:
2304                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
2305                 break;
2306         case EVENT_RX_FROM_UNKNOWN:
2307                 if (wpa_s->ap_iface == NULL)
2308                         break;
2309                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
2310                                        data->rx_from_unknown.wds);
2311                 break;
2312         case EVENT_RX_MGMT: {
2313                 u16 fc, stype;
2314                 const struct ieee80211_mgmt *mgmt;
2315
2316                 mgmt = (const struct ieee80211_mgmt *)
2317                         data->rx_mgmt.frame;
2318                 fc = le_to_host16(mgmt->frame_control);
2319                 stype = WLAN_FC_GET_STYPE(fc);
2320
2321                 if (wpa_s->ap_iface == NULL) {
2322 #ifdef CONFIG_P2P
2323                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2324                             data->rx_mgmt.frame_len > 24) {
2325                                 const u8 *src = mgmt->sa;
2326                                 const u8 *ie = mgmt->u.probe_req.variable;
2327                                 size_t ie_len = data->rx_mgmt.frame_len -
2328                                         (mgmt->u.probe_req.variable -
2329                                          data->rx_mgmt.frame);
2330                                 wpas_p2p_probe_req_rx(
2331                                         wpa_s, src, mgmt->da,
2332                                         mgmt->bssid, ie, ie_len,
2333                                         data->rx_mgmt.ssi_signal);
2334                                 break;
2335                         }
2336 #endif /* CONFIG_P2P */
2337                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2338                                 "management frame in non-AP mode");
2339                         break;
2340                 }
2341
2342                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2343                     data->rx_mgmt.frame_len > 24) {
2344                         const u8 *ie = mgmt->u.probe_req.variable;
2345                         size_t ie_len = data->rx_mgmt.frame_len -
2346                                 (mgmt->u.probe_req.variable -
2347                                  data->rx_mgmt.frame);
2348
2349                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
2350                                          mgmt->bssid, ie, ie_len,
2351                                          data->rx_mgmt.ssi_signal);
2352                         break;
2353                 }
2354
2355                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2356                 break;
2357                 }
2358 #endif /* CONFIG_AP */
2359         case EVENT_RX_ACTION:
2360                 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2361                         " Category=%u DataLen=%d freq=%d MHz",
2362                         MAC2STR(data->rx_action.sa),
2363                         data->rx_action.category, (int) data->rx_action.len,
2364                         data->rx_action.freq);
2365 #ifdef CONFIG_IEEE80211R
2366                 if (data->rx_action.category == WLAN_ACTION_FT) {
2367                         ft_rx_action(wpa_s, data->rx_action.data,
2368                                      data->rx_action.len);
2369                         break;
2370                 }
2371 #endif /* CONFIG_IEEE80211R */
2372 #ifdef CONFIG_IEEE80211W
2373 #ifdef CONFIG_SME
2374                 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2375                         sme_sa_query_rx(wpa_s, data->rx_action.sa,
2376                                         data->rx_action.data,
2377                                         data->rx_action.len);
2378                         break;
2379                 }
2380 #endif /* CONFIG_SME */
2381 #endif /* CONFIG_IEEE80211W */
2382 #ifdef CONFIG_GAS
2383                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2384                     gas_query_rx(wpa_s->gas, data->rx_action.da,
2385                                  data->rx_action.sa, data->rx_action.bssid,
2386                                  data->rx_action.data, data->rx_action.len,
2387                                  data->rx_action.freq) == 0)
2388                         break;
2389 #endif /* CONFIG_GAS */
2390                 if (data->rx_action.category == WLAN_ACTION_WNM) {
2391                         wnm_action_rx(wpa_s, &data->rx_action);
2392                         break;
2393                 }
2394 #ifdef CONFIG_TDLS
2395                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2396                     data->rx_action.len >= 4 &&
2397                     data->rx_action.data[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2398                         wpa_dbg(wpa_s, MSG_DEBUG, "TDLS: Received Discovery "
2399                                 "Response from " MACSTR,
2400                                 MAC2STR(data->rx_action.sa));
2401                         break;
2402                 }
2403 #endif /* CONFIG_TDLS */
2404 #ifdef CONFIG_P2P
2405                 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2406                                    data->rx_action.sa,
2407                                    data->rx_action.bssid,
2408                                    data->rx_action.category,
2409                                    data->rx_action.data,
2410                                    data->rx_action.len, data->rx_action.freq);
2411 #endif /* CONFIG_P2P */
2412                 break;
2413         case EVENT_RX_PROBE_REQ:
2414                 if (data->rx_probe_req.sa == NULL ||
2415                     data->rx_probe_req.ie == NULL)
2416                         break;
2417 #ifdef CONFIG_AP
2418                 if (wpa_s->ap_iface) {
2419                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2420                                              data->rx_probe_req.sa,
2421                                              data->rx_probe_req.da,
2422                                              data->rx_probe_req.bssid,
2423                                              data->rx_probe_req.ie,
2424                                              data->rx_probe_req.ie_len,
2425                                              data->rx_probe_req.ssi_signal);
2426                         break;
2427                 }
2428 #endif /* CONFIG_AP */
2429 #ifdef CONFIG_P2P
2430                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2431                                       data->rx_probe_req.da,
2432                                       data->rx_probe_req.bssid,
2433                                       data->rx_probe_req.ie,
2434                                       data->rx_probe_req.ie_len,
2435                                       data->rx_probe_req.ssi_signal);
2436 #endif /* CONFIG_P2P */
2437                 break;
2438         case EVENT_REMAIN_ON_CHANNEL:
2439 #ifdef CONFIG_OFFCHANNEL
2440                 offchannel_remain_on_channel_cb(
2441                         wpa_s, data->remain_on_channel.freq,
2442                         data->remain_on_channel.duration);
2443 #endif /* CONFIG_OFFCHANNEL */
2444 #ifdef CONFIG_P2P
2445                 wpas_p2p_remain_on_channel_cb(
2446                         wpa_s, data->remain_on_channel.freq,
2447                         data->remain_on_channel.duration);
2448 #endif /* CONFIG_P2P */
2449                 break;
2450         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2451 #ifdef CONFIG_OFFCHANNEL
2452                 offchannel_cancel_remain_on_channel_cb(
2453                         wpa_s, data->remain_on_channel.freq);
2454 #endif /* CONFIG_OFFCHANNEL */
2455 #ifdef CONFIG_P2P
2456                 wpas_p2p_cancel_remain_on_channel_cb(
2457                         wpa_s, data->remain_on_channel.freq);
2458 #endif /* CONFIG_P2P */
2459                 break;
2460 #ifdef CONFIG_P2P
2461         case EVENT_P2P_DEV_FOUND: {
2462                 struct p2p_peer_info peer_info;
2463
2464                 os_memset(&peer_info, 0, sizeof(peer_info));
2465                 if (data->p2p_dev_found.dev_addr)
2466                         os_memcpy(peer_info.p2p_device_addr,
2467                                   data->p2p_dev_found.dev_addr, ETH_ALEN);
2468                 if (data->p2p_dev_found.pri_dev_type)
2469                         os_memcpy(peer_info.pri_dev_type,
2470                                   data->p2p_dev_found.pri_dev_type,
2471                                   sizeof(peer_info.pri_dev_type));
2472                 if (data->p2p_dev_found.dev_name)
2473                         os_strlcpy(peer_info.device_name,
2474                                    data->p2p_dev_found.dev_name,
2475                                    sizeof(peer_info.device_name));
2476                 peer_info.config_methods = data->p2p_dev_found.config_methods;
2477                 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2478                 peer_info.group_capab = data->p2p_dev_found.group_capab;
2479
2480                 /*
2481                  * FIX: new_device=1 is not necessarily correct. We should
2482                  * maintain a P2P peer database in wpa_supplicant and update
2483                  * this information based on whether the peer is truly new.
2484                  */
2485                 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2486                 break;
2487                 }
2488         case EVENT_P2P_GO_NEG_REQ_RX:
2489                 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2490                                    data->p2p_go_neg_req_rx.dev_passwd_id);
2491                 break;
2492         case EVENT_P2P_GO_NEG_COMPLETED:
2493                 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2494                 break;
2495         case EVENT_P2P_PROV_DISC_REQUEST:
2496                 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2497                                    data->p2p_prov_disc_req.config_methods,
2498                                    data->p2p_prov_disc_req.dev_addr,
2499                                    data->p2p_prov_disc_req.pri_dev_type,
2500                                    data->p2p_prov_disc_req.dev_name,
2501                                    data->p2p_prov_disc_req.supp_config_methods,
2502                                    data->p2p_prov_disc_req.dev_capab,
2503                                    data->p2p_prov_disc_req.group_capab,
2504                                    NULL, 0);
2505                 break;
2506         case EVENT_P2P_PROV_DISC_RESPONSE:
2507                 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2508                                     data->p2p_prov_disc_resp.config_methods);
2509                 break;
2510         case EVENT_P2P_SD_REQUEST:
2511                 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2512                                 data->p2p_sd_req.sa,
2513                                 data->p2p_sd_req.dialog_token,
2514                                 data->p2p_sd_req.update_indic,
2515                                 data->p2p_sd_req.tlvs,
2516                                 data->p2p_sd_req.tlvs_len);
2517                 break;
2518         case EVENT_P2P_SD_RESPONSE:
2519                 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2520                                  data->p2p_sd_resp.update_indic,
2521                                  data->p2p_sd_resp.tlvs,
2522                                  data->p2p_sd_resp.tlvs_len);
2523                 break;
2524 #endif /* CONFIG_P2P */
2525         case EVENT_EAPOL_RX:
2526                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2527                                         data->eapol_rx.data,
2528                                         data->eapol_rx.data_len);
2529                 break;
2530         case EVENT_SIGNAL_CHANGE:
2531                 bgscan_notify_signal_change(
2532                         wpa_s, data->signal_change.above_threshold,
2533                         data->signal_change.current_signal,
2534                         data->signal_change.current_noise,
2535                         data->signal_change.current_txrate);
2536                 break;
2537         case EVENT_INTERFACE_ENABLED:
2538                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2539                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2540                         wpa_supplicant_update_mac_addr(wpa_s);
2541 #ifdef CONFIG_AP
2542                         if (!wpa_s->ap_iface) {
2543                                 wpa_supplicant_set_state(wpa_s,
2544                                                          WPA_DISCONNECTED);
2545                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2546                         } else
2547                                 wpa_supplicant_set_state(wpa_s,
2548                                                          WPA_COMPLETED);
2549 #else /* CONFIG_AP */
2550                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2551                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2552 #endif /* CONFIG_AP */
2553                 }
2554                 break;
2555         case EVENT_INTERFACE_DISABLED:
2556                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2557                 wpa_supplicant_mark_disassoc(wpa_s);
2558                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2559                 break;
2560         case EVENT_CHANNEL_LIST_CHANGED:
2561                 if (wpa_s->drv_priv == NULL)
2562                         break; /* Ignore event during drv initialization */
2563
2564                 free_hw_features(wpa_s);
2565                 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2566                         wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2567
2568 #ifdef CONFIG_P2P
2569                 wpas_p2p_update_channel_list(wpa_s);
2570 #endif /* CONFIG_P2P */
2571                 break;
2572         case EVENT_INTERFACE_UNAVAILABLE:
2573 #ifdef CONFIG_P2P
2574                 wpas_p2p_interface_unavailable(wpa_s);
2575 #endif /* CONFIG_P2P */
2576                 break;
2577         case EVENT_BEST_CHANNEL:
2578                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2579                         "(%d %d %d)",
2580                         data->best_chan.freq_24, data->best_chan.freq_5,
2581                         data->best_chan.freq_overall);
2582                 wpa_s->best_24_freq = data->best_chan.freq_24;
2583                 wpa_s->best_5_freq = data->best_chan.freq_5;
2584                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2585 #ifdef CONFIG_P2P
2586                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2587                                               data->best_chan.freq_5,
2588                                               data->best_chan.freq_overall);
2589 #endif /* CONFIG_P2P */
2590                 break;
2591         case EVENT_UNPROT_DEAUTH:
2592                 wpa_supplicant_event_unprot_deauth(wpa_s,
2593                                                    &data->unprot_deauth);
2594                 break;
2595         case EVENT_UNPROT_DISASSOC:
2596                 wpa_supplicant_event_unprot_disassoc(wpa_s,
2597                                                      &data->unprot_disassoc);
2598                 break;
2599         case EVENT_STATION_LOW_ACK:
2600 #ifdef CONFIG_AP
2601                 if (wpa_s->ap_iface && data)
2602                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2603                                                   data->low_ack.addr);
2604 #endif /* CONFIG_AP */
2605 #ifdef CONFIG_TDLS
2606                 if (data)
2607                         wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
2608 #endif /* CONFIG_TDLS */
2609                 break;
2610         case EVENT_IBSS_PEER_LOST:
2611 #ifdef CONFIG_IBSS_RSN
2612                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
2613 #endif /* CONFIG_IBSS_RSN */
2614                 break;
2615         case EVENT_DRIVER_GTK_REKEY:
2616                 if (os_memcmp(data->driver_gtk_rekey.bssid,
2617                               wpa_s->bssid, ETH_ALEN))
2618                         break;
2619                 if (!wpa_s->wpa)
2620                         break;
2621                 wpa_sm_update_replay_ctr(wpa_s->wpa,
2622                                          data->driver_gtk_rekey.replay_ctr);
2623                 break;
2624         case EVENT_SCHED_SCAN_STOPPED:
2625                 wpa_s->sched_scanning = 0;
2626                 wpa_supplicant_notify_scanning(wpa_s, 0);
2627
2628                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2629                         break;
2630
2631                 /*
2632                  * If we timed out, start a new sched scan to continue
2633                  * searching for more SSIDs.
2634                  */
2635                 if (wpa_s->sched_scan_timed_out)
2636                         wpa_supplicant_req_sched_scan(wpa_s);
2637                 break;
2638         case EVENT_WPS_BUTTON_PUSHED:
2639 #ifdef CONFIG_WPS
2640                 wpas_wps_start_pbc(wpa_s, NULL, 0);
2641 #endif /* CONFIG_WPS */
2642                 break;
2643         default:
2644                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2645                 break;
2646         }
2647 }