wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eapol_supp/eapol_supp_sm.h"
  13 #include "rsn_supp/wpa.h"
  14 #include "eloop.h"
  15 #include "config.h"
  16 #include "l2_packet/l2_packet.h"
  17 #include "wpa_supplicant_i.h"
  18 #include "driver_i.h"
  19 #include "pcsc_funcs.h"
  20 #include "rsn_supp/preauth.h"
  21 #include "rsn_supp/pmksa_cache.h"
  22 #include "common/wpa_ctrl.h"
  23 #include "eap_peer/eap.h"
  24 #include "ap/hostapd.h"
  25 #include "p2p/p2p.h"
  26 #include "wnm_sta.h"
  27 #include "notify.h"
  28 #include "common/ieee802_11_defs.h"
  29 #include "common/ieee802_11_common.h"
  30 #include "crypto/random.h"
  31 #include "blacklist.h"
  32 #include "wpas_glue.h"
  33 #include "wps_supplicant.h"
  34 #include "ibss_rsn.h"
  35 #include "sme.h"
  36 #include "gas_query.h"
  37 #include "p2p_supplicant.h"
  38 #include "bgscan.h"
  39 #include "autoscan.h"
  40 #include "ap.h"
  41 #include "bss.h"
  42 #include "scan.h"
  43 #include "offchannel.h"
  44 #include "interworking.h"
  45
  46
  47 #ifndef CONFIG_NO_SCAN_PROCESSING
  48 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  49                                               int new_scan, int own_request);
  50 #endif /* CONFIG_NO_SCAN_PROCESSING */
  51
  52
  53 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  54                               struct wpa_ssid *ssid)
  55 {
  56         struct os_reltime now;
  57
  58         if (ssid == NULL || ssid->disabled_until.sec == 0)
  59                 return 0;
  60
  61         os_get_reltime(&now);
  62         if (ssid->disabled_until.sec > now.sec)
  63                 return ssid->disabled_until.sec - now.sec;
  64
  65         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  66
  67         return 0;
  68 }
  69
  70
  71 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  72 {
  73         struct wpa_ssid *ssid, *old_ssid;
  74         int res;
  75
  76         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  77                 return 0;
  78
  79         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  80                 "information");
  81         ssid = wpa_supplicant_get_ssid(wpa_s);
  82         if (ssid == NULL) {
  83                 wpa_msg(wpa_s, MSG_INFO,
  84                         "No network configuration found for the current AP");
  85                 return -1;
  86         }
  87
  88         if (wpas_network_disabled(wpa_s, ssid)) {
  89                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
  90                 return -1;
  91         }
  92
  93         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
  94             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
  95                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
  96                 return -1;
  97         }
  98
  99         res = wpas_temp_disabled(wpa_s, ssid);
 100         if (res > 0) {
 101                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 102                         "disabled for %d second(s)", res);
 103                 return -1;
 104         }
 105
 106         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 107                 "current AP");
 108         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 109                 u8 wpa_ie[80];
 110                 size_t wpa_ie_len = sizeof(wpa_ie);
 111                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 112                                               wpa_ie, &wpa_ie_len) < 0)
 113                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 114         } else {
 115                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 116         }
 117
 118         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 119                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 120         old_ssid = wpa_s->current_ssid;
 121         wpa_s->current_ssid = ssid;
 122         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 123         wpa_supplicant_initiate_eapol(wpa_s);
 124         if (old_ssid != wpa_s->current_ssid)
 125                 wpas_notify_network_changed(wpa_s);
 126
 127         return 0;
 128 }
 129
 130
 131 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 132 {
 133         struct wpa_supplicant *wpa_s = eloop_ctx;
 134
 135         if (wpa_s->countermeasures) {
 136                 wpa_s->countermeasures = 0;
 137                 wpa_drv_set_countermeasures(wpa_s, 0);
 138                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 139                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 140         }
 141 }
 142
 143
 144 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 145 {
 146         int bssid_changed;
 147
 148         wnm_bss_keep_alive_deinit(wpa_s);
 149
 150 #ifdef CONFIG_IBSS_RSN
 151         ibss_rsn_deinit(wpa_s->ibss_rsn);
 152         wpa_s->ibss_rsn = NULL;
 153 #endif /* CONFIG_IBSS_RSN */
 154
 155 #ifdef CONFIG_AP
 156         wpa_supplicant_ap_deinit(wpa_s);
 157 #endif /* CONFIG_AP */
 158
 159         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 160                 return;
 161
 162         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 163         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 164         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 165         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 166 #ifdef CONFIG_SME
 167         wpa_s->sme.prev_bssid_set = 0;
 168 #endif /* CONFIG_SME */
 169 #ifdef CONFIG_P2P
 170         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 171 #endif /* CONFIG_P2P */
 172         wpa_s->current_bss = NULL;
 173         wpa_s->assoc_freq = 0;
 174 #ifdef CONFIG_IEEE80211R
 175 #ifdef CONFIG_SME
 176         if (wpa_s->sme.ft_ies)
 177                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 178 #endif /* CONFIG_SME */
 179 #endif /* CONFIG_IEEE80211R */
 180
 181         if (bssid_changed)
 182                 wpas_notify_bssid_changed(wpa_s);
 183
 184         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 185         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 186         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 187                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 188         wpa_s->ap_ies_from_associnfo = 0;
 189         wpa_s->current_ssid = NULL;
 190         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 191         wpa_s->key_mgmt = 0;
 192 }
 193
 194
 195 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 196 {
 197         struct wpa_ie_data ie;
 198         int pmksa_set = -1;
 199         size_t i;
 200
 201         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 202             ie.pmkid == NULL)
 203                 return;
 204
 205         for (i = 0; i < ie.num_pmkid; i++) {
 206                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 207                                                     ie.pmkid + i * PMKID_LEN,
 208                                                     NULL, NULL, 0);
 209                 if (pmksa_set == 0) {
 210                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 211                         break;
 212                 }
 213         }
 214
 215         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 216                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 217 }
 218
 219
 220 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 221                                                  union wpa_event_data *data)
 222 {
 223         if (data == NULL) {
 224                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 225                         "event");
 226                 return;
 227         }
 228         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 229                 " index=%d preauth=%d",
 230                 MAC2STR(data->pmkid_candidate.bssid),
 231                 data->pmkid_candidate.index,
 232                 data->pmkid_candidate.preauth);
 233
 234         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 235                             data->pmkid_candidate.index,
 236                             data->pmkid_candidate.preauth);
 237 }
 238
 239
 240 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 241 {
 242         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 243             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 244                 return 0;
 245
 246 #ifdef IEEE8021X_EAPOL
 247         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 248             wpa_s->current_ssid &&
 249             !(wpa_s->current_ssid->eapol_flags &
 250               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 251                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 252                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 253                  * plaintext or static WEP keys). */
 254                 return 0;
 255         }
 256 #endif /* IEEE8021X_EAPOL */
 257
 258         return 1;
 259 }
 260
 261
 262 /**
 263  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 264  * @wpa_s: pointer to wpa_supplicant data
 265  * @ssid: Configuration data for the network
 266  * Returns: 0 on success, -1 on failure
 267  *
 268  * This function is called when starting authentication with a network that is
 269  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 270  */
 271 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 272                               struct wpa_ssid *ssid)
 273 {
 274 #ifdef IEEE8021X_EAPOL
 275 #ifdef PCSC_FUNCS
 276         int aka = 0, sim = 0;
 277
 278         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL ||
 279             wpa_s->conf->external_sim)
 280                 return 0;
 281
 282         if (ssid->eap.eap_methods == NULL) {
 283                 sim = 1;
 284                 aka = 1;
 285         } else {
 286                 struct eap_method_type *eap = ssid->eap.eap_methods;
 287                 while (eap->vendor != EAP_VENDOR_IETF ||
 288                        eap->method != EAP_TYPE_NONE) {
 289                         if (eap->vendor == EAP_VENDOR_IETF) {
 290                                 if (eap->method == EAP_TYPE_SIM)
 291                                         sim = 1;
 292                                 else if (eap->method == EAP_TYPE_AKA ||
 293                                          eap->method == EAP_TYPE_AKA_PRIME)
 294                                         aka = 1;
 295                         }
 296                         eap++;
 297                 }
 298         }
 299
 300         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 301                 sim = 0;
 302         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 303             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 304             NULL)
 305                 aka = 0;
 306
 307         if (!sim && !aka) {
 308                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 309                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 310                         "enabled");
 311                 return 0;
 312         }
 313
 314         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 315                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 316
 317         wpa_s->scard = scard_init(NULL);
 318         if (wpa_s->scard == NULL) {
 319                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 320                         "(pcsc-lite)");
 321                 return -1;
 322         }
 323         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 324         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 325 #endif /* PCSC_FUNCS */
 326 #endif /* IEEE8021X_EAPOL */
 327
 328         return 0;
 329 }
 330
 331
 332 #ifndef CONFIG_NO_SCAN_PROCESSING
 333
 334 static int has_wep_key(struct wpa_ssid *ssid)
 335 {
 336         int i;
 337
 338         for (i = 0; i < NUM_WEP_KEYS; i++) {
 339                 if (ssid->wep_key_len[i])
 340                         return 1;
 341         }
 342
 343         return 0;
 344 }
 345
 346
 347 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 348                                         struct wpa_ssid *ssid)
 349 {
 350         int privacy = 0;
 351
 352         if (ssid->mixed_cell)
 353                 return 1;
 354
 355 #ifdef CONFIG_WPS
 356         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 357                 return 1;
 358 #endif /* CONFIG_WPS */
 359
 360         if (has_wep_key(ssid))
 361                 privacy = 1;
 362
 363 #ifdef IEEE8021X_EAPOL
 364         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 365             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 366                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 367                 privacy = 1;
 368 #endif /* IEEE8021X_EAPOL */
 369
 370         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 371                 privacy = 1;
 372
 373         if (bss->caps & IEEE80211_CAP_PRIVACY)
 374                 return privacy;
 375         return !privacy;
 376 }
 377
 378
 379 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 380                                          struct wpa_ssid *ssid,
 381                                          struct wpa_bss *bss)
 382 {
 383         struct wpa_ie_data ie;
 384         int proto_match = 0;
 385         const u8 *rsn_ie, *wpa_ie;
 386         int ret;
 387         int wep_ok;
 388
 389         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 390         if (ret >= 0)
 391                 return ret;
 392
 393         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 394         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 395                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 396                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 397                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 398
 399         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 400         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 401                 proto_match++;
 402
 403                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 404                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 405                                 "failed");
 406                         break;
 407                 }
 408
 409                 if (wep_ok &&
 410                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 411                 {
 412                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 413                                 "in RSN IE");
 414                         return 1;
 415                 }
 416
 417                 if (!(ie.proto & ssid->proto)) {
 418                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 419                                 "mismatch");
 420                         break;
 421                 }
 422
 423                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 424                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 425                                 "cipher mismatch");
 426                         break;
 427                 }
 428
 429                 if (!(ie.group_cipher & ssid->group_cipher)) {
 430                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 431                                 "cipher mismatch");
 432                         break;
 433                 }
 434
 435                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 436                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 437                                 "mismatch");
 438                         break;
 439                 }
 440
 441 #ifdef CONFIG_IEEE80211W
 442                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 443                     (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
 444                      wpa_s->conf->pmf : ssid->ieee80211w) ==
 445                     MGMT_FRAME_PROTECTION_REQUIRED) {
 446                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 447                                 "frame protection");
 448                         break;
 449                 }
 450 #endif /* CONFIG_IEEE80211W */
 451
 452                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 453                 return 1;
 454         }
 455
 456         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 457         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 458                 proto_match++;
 459
 460                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 461                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 462                                 "failed");
 463                         break;
 464                 }
 465
 466                 if (wep_ok &&
 467                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 468                 {
 469                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 470                                 "in WPA IE");
 471                         return 1;
 472                 }
 473
 474                 if (!(ie.proto & ssid->proto)) {
 475                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 476                                 "mismatch");
 477                         break;
 478                 }
 479
 480                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 481                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 482                                 "cipher mismatch");
 483                         break;
 484                 }
 485
 486                 if (!(ie.group_cipher & ssid->group_cipher)) {
 487                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 488                                 "cipher mismatch");
 489                         break;
 490                 }
 491
 492                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 493                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 494                                 "mismatch");
 495                         break;
 496                 }
 497
 498                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 499                 return 1;
 500         }
 501
 502         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 503             !rsn_ie) {
 504                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 505                 return 1;
 506         }
 507
 508         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 509             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 510                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 511                 return 0;
 512         }
 513
 514         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 515                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 516                 return 1;
 517         }
 518
 519         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 520                 "WPA/WPA2");
 521
 522         return 0;
 523 }
 524
 525
 526 static int freq_allowed(int *freqs, int freq)
 527 {
 528         int i;
 529
 530         if (freqs == NULL)
 531                 return 1;
 532
 533         for (i = 0; freqs[i]; i++)
 534                 if (freqs[i] == freq)
 535                         return 1;
 536         return 0;
 537 }
 538
 539
 540 static int ht_supported(const struct hostapd_hw_modes *mode)
 541 {
 542         if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
 543                 /*
 544                  * The driver did not indicate whether it supports HT. Assume
 545                  * it does to avoid connection issues.
 546                  */
 547                 return 1;
 548         }
 549
 550         /*
 551          * IEEE Std 802.11n-2009 20.1.1:
 552          * An HT non-AP STA shall support all EQM rates for one spatial stream.
 553          */
 554         return mode->mcs_set[0] == 0xff;
 555 }
 556
 557
 558 static int vht_supported(const struct hostapd_hw_modes *mode)
 559 {
 560         if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) {
 561                 /*
 562                  * The driver did not indicate whether it supports VHT. Assume
 563                  * it does to avoid connection issues.
 564                  */
 565                 return 1;
 566         }
 567
 568         /*
 569          * A VHT non-AP STA shall support MCS 0-7 for one spatial stream.
 570          * TODO: Verify if this complies with the standard
 571          */
 572         return (mode->vht_mcs_set[0] & 0x3) != 3;
 573 }
 574
 575
 576 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 577 {
 578         const struct hostapd_hw_modes *mode = NULL, *modes;
 579         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 580         const u8 *rate_ie;
 581         int i, j, k;
 582
 583         if (bss->freq == 0)
 584                 return 1; /* Cannot do matching without knowing band */
 585
 586         modes = wpa_s->hw.modes;
 587         if (modes == NULL) {
 588                 /*
 589                  * The driver does not provide any additional information
 590                  * about the utilized hardware, so allow the connection attempt
 591                  * to continue.
 592                  */
 593                 return 1;
 594         }
 595
 596         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 597                 for (j = 0; j < modes[i].num_channels; j++) {
 598                         int freq = modes[i].channels[j].freq;
 599                         if (freq == bss->freq) {
 600                                 if (mode &&
 601                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 602                                         break; /* do not allow 802.11b replace
 603                                                 * 802.11g */
 604                                 mode = &modes[i];
 605                                 break;
 606                         }
 607                 }
 608         }
 609
 610         if (mode == NULL)
 611                 return 0;
 612
 613         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 614                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 615                 if (rate_ie == NULL)
 616                         continue;
 617
 618                 for (j = 2; j < rate_ie[1] + 2; j++) {
 619                         int flagged = !!(rate_ie[j] & 0x80);
 620                         int r = (rate_ie[j] & 0x7f) * 5;
 621
 622                         /*
 623                          * IEEE Std 802.11n-2009 7.3.2.2:
 624                          * The new BSS Membership selector value is encoded
 625                          * like a legacy basic rate, but it is not a rate and
 626                          * only indicates if the BSS members are required to
 627                          * support the mandatory features of Clause 20 [HT PHY]
 628                          * in order to join the BSS.
 629                          */
 630                         if (flagged && ((rate_ie[j] & 0x7f) ==
 631                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 632                                 if (!ht_supported(mode)) {
 633                                         wpa_dbg(wpa_s, MSG_DEBUG,
 634                                                 "   hardware does not support "
 635                                                 "HT PHY");
 636                                         return 0;
 637                                 }
 638                                 continue;
 639                         }
 640
 641                         /* There's also a VHT selector for 802.11ac */
 642                         if (flagged && ((rate_ie[j] & 0x7f) ==
 643                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 644                                 if (!vht_supported(mode)) {
 645                                         wpa_dbg(wpa_s, MSG_DEBUG,
 646                                                 "   hardware does not support "
 647                                                 "VHT PHY");
 648                                         return 0;
 649                                 }
 650                                 continue;
 651                         }
 652
 653                         if (!flagged)
 654                                 continue;
 655
 656                         /* check for legacy basic rates */
 657                         for (k = 0; k < mode->num_rates; k++) {
 658                                 if (mode->rates[k] == r)
 659                                         break;
 660                         }
 661                         if (k == mode->num_rates) {
 662                                 /*
 663                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 664                                  * order to join a BSS all required rates
 665                                  * have to be supported by the hardware.
 666                                  */
 667                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 668                                         "not support required rate %d.%d Mbps",
 669                                         r / 10, r % 10);
 670                                 return 0;
 671                         }
 672                 }
 673         }
 674
 675         return 1;
 676 }
 677
 678
 679 static int bss_is_dmg(struct wpa_bss *bss)
 680 {
 681         return bss->freq > 45000;
 682 }
 683
 684
 685 /*
 686  * Test whether BSS is in an ESS.
 687  * This is done differently in DMG (60 GHz) and non-DMG bands
 688  */
 689 static int bss_is_ess(struct wpa_bss *bss)
 690 {
 691         if (bss_is_dmg(bss)) {
 692                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 693                         IEEE80211_CAP_DMG_AP;
 694         }
 695
 696         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 697                 IEEE80211_CAP_ESS);
 698 }
 699
 700
 701 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 702                                             int i, struct wpa_bss *bss,
 703                                             struct wpa_ssid *group)
 704 {
 705         u8 wpa_ie_len, rsn_ie_len;
 706         int wpa;
 707         struct wpa_blacklist *e;
 708         const u8 *ie;
 709         struct wpa_ssid *ssid;
 710
 711         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 712         wpa_ie_len = ie ? ie[1] : 0;
 713
 714         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 715         rsn_ie_len = ie ? ie[1] : 0;
 716
 717         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 718                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s",
 719                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 720                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 721                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 722                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 723                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 724                 " p2p" : "");
 725
 726         e = wpa_blacklist_get(wpa_s, bss->bssid);
 727         if (e) {
 728                 int limit = 1;
 729                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 730                         /*
 731                          * When only a single network is enabled, we can
 732                          * trigger blacklisting on the first failure. This
 733                          * should not be done with multiple enabled networks to
 734                          * avoid getting forced to move into a worse ESS on
 735                          * single error if there are no other BSSes of the
 736                          * current ESS.
 737                          */
 738                         limit = 0;
 739                 }
 740                 if (e->count > limit) {
 741                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 742                                 "(count=%d limit=%d)", e->count, limit);
 743                         return NULL;
 744                 }
 745         }
 746
 747         if (bss->ssid_len == 0) {
 748                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 749                 return NULL;
 750         }
 751
 752         if (disallowed_bssid(wpa_s, bss->bssid)) {
 753                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 754                 return NULL;
 755         }
 756
 757         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 758                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 759                 return NULL;
 760         }
 761
 762         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 763
 764         for (ssid = group; ssid; ssid = ssid->pnext) {
 765                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 766                 int res;
 767
 768                 if (wpas_network_disabled(wpa_s, ssid)) {
 769                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 770                         continue;
 771                 }
 772
 773                 res = wpas_temp_disabled(wpa_s, ssid);
 774                 if (res > 0) {
 775                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 776                                 "temporarily for %d second(s)", res);
 777                         continue;
 778                 }
 779
 780 #ifdef CONFIG_WPS
 781                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 782                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 783                                 "(WPS)");
 784                         continue;
 785                 }
 786
 787                 if (wpa && ssid->ssid_len == 0 &&
 788                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 789                         check_ssid = 0;
 790
 791                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 792                         /* Only allow wildcard SSID match if an AP
 793                          * advertises active WPS operation that matches
 794                          * with our mode. */
 795                         check_ssid = 1;
 796                         if (ssid->ssid_len == 0 &&
 797                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 798                                 check_ssid = 0;
 799                 }
 800 #endif /* CONFIG_WPS */
 801
 802                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 803                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 804                         check_ssid = 0;
 805
 806                 if (check_ssid &&
 807                     (bss->ssid_len != ssid->ssid_len ||
 808                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 809                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 810                         continue;
 811                 }
 812
 813                 if (ssid->bssid_set &&
 814                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 815                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 816                         continue;
 817                 }
 818
 819                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 820                         continue;
 821
 822                 if (!wpa &&
 823                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 824                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 825                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 826                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 827                                 "not allowed");
 828                         continue;
 829                 }
 830
 831                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 832                     has_wep_key(ssid)) {
 833                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 834                         continue;
 835                 }
 836
 837                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 838                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 839                                 "mismatch");
 840                         continue;
 841                 }
 842
 843                 if (!bss_is_ess(bss)) {
 844                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 845                         continue;
 846                 }
 847
 848                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 849                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 850                                 "allowed");
 851                         continue;
 852                 }
 853
 854                 if (!rate_match(wpa_s, bss)) {
 855                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 856                                 "not match");
 857                         continue;
 858                 }
 859
 860 #ifdef CONFIG_P2P
 861                 if (ssid->p2p_group &&
 862                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 863                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 864                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
 865                         continue;
 866                 }
 867
 868                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
 869                         struct wpabuf *p2p_ie;
 870                         u8 dev_addr[ETH_ALEN];
 871
 872                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
 873                         if (ie == NULL) {
 874                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
 875                                 continue;
 876                         }
 877                         p2p_ie = wpa_bss_get_vendor_ie_multi(
 878                                 bss, P2P_IE_VENDOR_TYPE);
 879                         if (p2p_ie == NULL) {
 880                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
 881                                 continue;
 882                         }
 883
 884                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
 885                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
 886                                          ETH_ALEN) != 0) {
 887                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
 888                                 wpabuf_free(p2p_ie);
 889                                 continue;
 890                         }
 891                         wpabuf_free(p2p_ie);
 892                 }
 893
 894                 /*
 895                  * TODO: skip the AP if its P2P IE has Group Formation
 896                  * bit set in the P2P Group Capability Bitmap and we
 897                  * are not in Group Formation with that device.
 898                  */
 899 #endif /* CONFIG_P2P */
 900
 901                 /* Matching configuration found */
 902                 return ssid;
 903         }
 904
 905         /* No matching configuration found */
 906         return NULL;
 907 }
 908
 909
 910 static struct wpa_bss *
 911 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 912                           struct wpa_ssid *group,
 913                           struct wpa_ssid **selected_ssid)
 914 {
 915         unsigned int i;
 916
 917         wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 918                 group->priority);
 919
 920         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 921                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 922                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
 923                 if (!*selected_ssid)
 924                         continue;
 925                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 926                         " ssid='%s'",
 927                         MAC2STR(bss->bssid),
 928                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
 929                 return bss;
 930         }
 931
 932         return NULL;
 933 }
 934
 935
 936 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 937                                              struct wpa_ssid **selected_ssid)
 938 {
 939         struct wpa_bss *selected = NULL;
 940         int prio;
 941
 942         if (wpa_s->last_scan_res == NULL ||
 943             wpa_s->last_scan_res_used == 0)
 944                 return NULL; /* no scan results from last update */
 945
 946         while (selected == NULL) {
 947                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 948                         selected = wpa_supplicant_select_bss(
 949                                 wpa_s, wpa_s->conf->pssid[prio],
 950                                 selected_ssid);
 951                         if (selected)
 952                                 break;
 953                 }
 954
 955                 if (selected == NULL && wpa_s->blacklist &&
 956                     !wpa_s->countermeasures) {
 957                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
 958                                 "blacklist and try again");
 959                         wpa_blacklist_clear(wpa_s);
 960                         wpa_s->blacklist_cleared++;
 961                 } else if (selected == NULL)
 962                         break;
 963         }
 964
 965         return selected;
 966 }
 967
 968
 969 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 970                                         int timeout_sec, int timeout_usec)
 971 {
 972         if (!wpa_supplicant_enabled_networks(wpa_s)) {
 973                 /*
 974                  * No networks are enabled; short-circuit request so
 975                  * we don't wait timeout seconds before transitioning
 976                  * to INACTIVE state.
 977                  */
 978                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
 979                         "since there are no enabled networks");
 980                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 981                 return;
 982         }
 983
 984         wpa_s->scan_for_connection = 1;
 985         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 986 }
 987
 988
 989 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 990                            struct wpa_bss *selected,
 991                            struct wpa_ssid *ssid)
 992 {
 993         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 994                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 995                         "PBC session overlap");
 996 #ifdef CONFIG_P2P
 997                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
 998                         return -1;
 999 #endif /* CONFIG_P2P */
1000
1001 #ifdef CONFIG_WPS
1002                 wpas_wps_cancel(wpa_s);
1003 #endif /* CONFIG_WPS */
1004                 return -1;
1005         }
1006
1007         wpa_msg(wpa_s, MSG_DEBUG,
1008                 "Considering connect request: reassociate: %d  selected: "
1009                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1010                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1011                 wpa_s->reassociate, MAC2STR(selected->bssid),
1012                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1013                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1014                 ssid, wpa_s->current_ssid);
1015
1016         /*
1017          * Do not trigger new association unless the BSSID has changed or if
1018          * reassociation is requested. If we are in process of associating with
1019          * the selected BSSID, do not trigger new attempt.
1020          */
1021         if (wpa_s->reassociate ||
1022             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1023              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1024                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1025               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1026                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1027                0) ||
1028               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1029                ssid != wpa_s->current_ssid)))) {
1030                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1031                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1032                         return 0;
1033                 }
1034                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1035                         MAC2STR(selected->bssid));
1036                 wpa_supplicant_associate(wpa_s, selected, ssid);
1037         } else {
1038                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1039                         "connect with the selected AP");
1040         }
1041
1042         return 0;
1043 }
1044
1045
1046 static struct wpa_ssid *
1047 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1048 {
1049         int prio;
1050         struct wpa_ssid *ssid;
1051
1052         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1053                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1054                 {
1055                         if (wpas_network_disabled(wpa_s, ssid))
1056                                 continue;
1057                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1058                             ssid->mode == IEEE80211_MODE_AP)
1059                                 return ssid;
1060                 }
1061         }
1062         return NULL;
1063 }
1064
1065
1066 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1067  * on BSS added and BSS changed events */
1068 static void wpa_supplicant_rsn_preauth_scan_results(
1069         struct wpa_supplicant *wpa_s)
1070 {
1071         struct wpa_bss *bss;
1072
1073         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1074                 return;
1075
1076         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1077                 const u8 *ssid, *rsn;
1078
1079                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1080                 if (ssid == NULL)
1081                         continue;
1082
1083                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1084                 if (rsn == NULL)
1085                         continue;
1086
1087                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1088         }
1089
1090 }
1091
1092
1093 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1094                                        struct wpa_bss *selected,
1095                                        struct wpa_ssid *ssid)
1096 {
1097         struct wpa_bss *current_bss = NULL;
1098         int min_diff;
1099
1100         if (wpa_s->reassociate)
1101                 return 1; /* explicit request to reassociate */
1102         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1103                 return 1; /* we are not associated; continue */
1104         if (wpa_s->current_ssid == NULL)
1105                 return 1; /* unknown current SSID */
1106         if (wpa_s->current_ssid != ssid)
1107                 return 1; /* different network block */
1108
1109         if (wpas_driver_bss_selection(wpa_s))
1110                 return 0; /* Driver-based roaming */
1111
1112         if (wpa_s->current_ssid->ssid)
1113                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1114                                           wpa_s->current_ssid->ssid,
1115                                           wpa_s->current_ssid->ssid_len);
1116         if (!current_bss)
1117                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1118
1119         if (!current_bss)
1120                 return 1; /* current BSS not seen in scan results */
1121
1122         if (current_bss == selected)
1123                 return 0;
1124
1125         if (selected->last_update_idx > current_bss->last_update_idx)
1126                 return 1; /* current BSS not seen in the last scan */
1127
1128 #ifndef CONFIG_NO_ROAMING
1129         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1130         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1131                 MAC2STR(current_bss->bssid), current_bss->level);
1132         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1133                 MAC2STR(selected->bssid), selected->level);
1134
1135         if (wpa_s->current_ssid->bssid_set &&
1136             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1137             0) {
1138                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1139                         "has preferred BSSID");
1140                 return 1;
1141         }
1142
1143         if (current_bss->level < 0 && current_bss->level > selected->level) {
1144                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1145                         "signal level");
1146                 return 0;
1147         }
1148
1149         min_diff = 2;
1150         if (current_bss->level < 0) {
1151                 if (current_bss->level < -85)
1152                         min_diff = 1;
1153                 else if (current_bss->level < -80)
1154                         min_diff = 2;
1155                 else if (current_bss->level < -75)
1156                         min_diff = 3;
1157                 else if (current_bss->level < -70)
1158                         min_diff = 4;
1159                 else
1160                         min_diff = 5;
1161         }
1162         if (abs(current_bss->level - selected->level) < min_diff) {
1163                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1164                         "in signal level");
1165                 return 0;
1166         }
1167
1168         return 1;
1169 #else /* CONFIG_NO_ROAMING */
1170         return 0;
1171 #endif /* CONFIG_NO_ROAMING */
1172 }
1173
1174
1175 /* Return != 0 if no scan results could be fetched or if scan results should not
1176  * be shared with other virtual interfaces. */
1177 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1178                                               union wpa_event_data *data,
1179                                               int own_request)
1180 {
1181         struct wpa_scan_results *scan_res = NULL;
1182         int ret = 0;
1183         int ap = 0;
1184 #ifndef CONFIG_NO_RANDOM_POOL
1185         size_t i, num;
1186 #endif /* CONFIG_NO_RANDOM_POOL */
1187
1188 #ifdef CONFIG_AP
1189         if (wpa_s->ap_iface)
1190                 ap = 1;
1191 #endif /* CONFIG_AP */
1192
1193         wpa_supplicant_notify_scanning(wpa_s, 0);
1194
1195         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1196                                                    data ? &data->scan_info :
1197                                                    NULL, 1);
1198         if (scan_res == NULL) {
1199                 if (wpa_s->conf->ap_scan == 2 || ap ||
1200                     wpa_s->scan_res_handler == scan_only_handler)
1201                         return -1;
1202                 if (!own_request)
1203                         return -1;
1204                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1205                         "scanning again");
1206                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1207                 ret = -1;
1208                 goto scan_work_done;
1209         }
1210
1211 #ifndef CONFIG_NO_RANDOM_POOL
1212         num = scan_res->num;
1213         if (num > 10)
1214                 num = 10;
1215         for (i = 0; i < num; i++) {
1216                 u8 buf[5];
1217                 struct wpa_scan_res *res = scan_res->res[i];
1218                 buf[0] = res->bssid[5];
1219                 buf[1] = res->qual & 0xff;
1220                 buf[2] = res->noise & 0xff;
1221                 buf[3] = res->level & 0xff;
1222                 buf[4] = res->tsf & 0xff;
1223                 random_add_randomness(buf, sizeof(buf));
1224         }
1225 #endif /* CONFIG_NO_RANDOM_POOL */
1226
1227         if (own_request && wpa_s->scan_res_handler &&
1228             (wpa_s->own_scan_running || !wpa_s->external_scan_running)) {
1229                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1230                                          struct wpa_scan_results *scan_res);
1231
1232                 scan_res_handler = wpa_s->scan_res_handler;
1233                 wpa_s->scan_res_handler = NULL;
1234                 scan_res_handler(wpa_s, scan_res);
1235                 ret = -2;
1236                 goto scan_work_done;
1237         }
1238
1239         if (ap) {
1240                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1241 #ifdef CONFIG_AP
1242                 if (wpa_s->ap_iface->scan_cb)
1243                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1244 #endif /* CONFIG_AP */
1245                 goto scan_work_done;
1246         }
1247
1248         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1249                 wpa_s->own_scan_running, wpa_s->external_scan_running);
1250         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1251             wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1252                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1253                              wpa_s->manual_scan_id);
1254                 wpa_s->manual_scan_use_id = 0;
1255         } else {
1256                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1257         }
1258         wpas_notify_scan_results(wpa_s);
1259
1260         wpas_notify_scan_done(wpa_s, 1);
1261
1262         if (!wpa_s->own_scan_running && wpa_s->external_scan_running) {
1263                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1264                 wpa_scan_results_free(scan_res);
1265                 return 0;
1266         }
1267
1268         if (sme_proc_obss_scan(wpa_s) > 0)
1269                 goto scan_work_done;
1270
1271         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1272                 goto scan_work_done;
1273
1274         if (autoscan_notify_scan(wpa_s, scan_res))
1275                 goto scan_work_done;
1276
1277         if (wpa_s->disconnected) {
1278                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1279                 goto scan_work_done;
1280         }
1281
1282         if (!wpas_driver_bss_selection(wpa_s) &&
1283             bgscan_notify_scan(wpa_s, scan_res) == 1)
1284                 goto scan_work_done;
1285
1286         wpas_wps_update_ap_info(wpa_s, scan_res);
1287
1288         wpa_scan_results_free(scan_res);
1289
1290         if (wpa_s->scan_work) {
1291                 struct wpa_radio_work *work = wpa_s->scan_work;
1292                 wpa_s->scan_work = NULL;
1293                 radio_work_done(work);
1294         }
1295
1296         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1297
1298 scan_work_done:
1299         wpa_scan_results_free(scan_res);
1300         if (wpa_s->scan_work) {
1301                 struct wpa_radio_work *work = wpa_s->scan_work;
1302                 wpa_s->scan_work = NULL;
1303                 radio_work_done(work);
1304         }
1305         return ret;
1306 }
1307
1308
1309 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1310                                               int new_scan, int own_request)
1311 {
1312         struct wpa_bss *selected;
1313         struct wpa_ssid *ssid = NULL;
1314
1315         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1316
1317         if (selected) {
1318                 int skip;
1319                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1320                 if (skip) {
1321                         if (new_scan)
1322                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1323                         return 0;
1324                 }
1325
1326                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1327                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1328                         return -1;
1329                 }
1330                 if (new_scan)
1331                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1332                 /*
1333                  * Do not notify other virtual radios of scan results since we do not
1334                  * want them to start other associations at the same time.
1335                  */
1336                 return 1;
1337         } else {
1338                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1339                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1340                 if (ssid) {
1341                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1342                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1343                         if (new_scan)
1344                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1345                 } else if (own_request) {
1346                         /*
1347                          * No SSID found. If SCAN results are as a result of
1348                          * own scan request and not due to a scan request on
1349                          * another shared interface, try another scan.
1350                          */
1351                         int timeout_sec = wpa_s->scan_interval;
1352                         int timeout_usec = 0;
1353 #ifdef CONFIG_P2P
1354                         if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1355                                 return 0;
1356
1357                         if (wpa_s->p2p_in_provisioning ||
1358                             wpa_s->show_group_started) {
1359                                 /*
1360                                  * Use shorter wait during P2P Provisioning
1361                                  * state and during P2P join-a-group operation
1362                                  * to speed up group formation.
1363                                  */
1364                                 timeout_sec = 0;
1365                                 timeout_usec = 250000;
1366                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1367                                                             timeout_usec);
1368                                 return 0;
1369                         }
1370 #endif /* CONFIG_P2P */
1371 #ifdef CONFIG_INTERWORKING
1372                         if (wpa_s->conf->auto_interworking &&
1373                             wpa_s->conf->interworking &&
1374                             wpa_s->conf->cred) {
1375                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1376                                         "start ANQP fetch since no matching "
1377                                         "networks found");
1378                                 wpa_s->network_select = 1;
1379                                 wpa_s->auto_network_select = 1;
1380                                 interworking_start_fetch_anqp(wpa_s);
1381                                 return 1;
1382                         }
1383 #endif /* CONFIG_INTERWORKING */
1384 #ifdef CONFIG_WPS
1385                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1386                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1387                                 timeout_sec = 0;
1388                                 timeout_usec = 500000;
1389                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1390                                                             timeout_usec);
1391                                 return 0;
1392                         }
1393 #endif /* CONFIG_WPS */
1394                         if (wpa_supplicant_req_sched_scan(wpa_s))
1395                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1396                                                             timeout_usec);
1397                 }
1398         }
1399         return 0;
1400 }
1401
1402
1403 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1404                                               union wpa_event_data *data)
1405 {
1406         struct wpa_supplicant *ifs;
1407
1408         if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
1409                 /*
1410                  * If no scan results could be fetched, then no need to
1411                  * notify those interfaces that did not actually request
1412                  * this scan. Similarly, if scan results started a new operation on this
1413                  * interface, do not notify other interfaces to avoid concurrent
1414                  * operations during a connection attempt.
1415                  */
1416                 return;
1417         }
1418
1419         /*
1420          * Check other interfaces to see if they share the same radio. If
1421          * so, they get updated with this same scan info.
1422          */
1423         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1424                          radio_list) {
1425                 if (ifs != wpa_s) {
1426                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1427                                    "sibling", ifs->ifname);
1428                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1429                 }
1430         }
1431 }
1432
1433 #endif /* CONFIG_NO_SCAN_PROCESSING */
1434
1435
1436 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1437 {
1438 #ifdef CONFIG_NO_SCAN_PROCESSING
1439         return -1;
1440 #else /* CONFIG_NO_SCAN_PROCESSING */
1441         struct os_reltime now;
1442
1443         if (wpa_s->last_scan_res_used <= 0)
1444                 return -1;
1445
1446         os_get_reltime(&now);
1447         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1448                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1449                 return -1;
1450         }
1451
1452         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1453 #endif /* CONFIG_NO_SCAN_PROCESSING */
1454 }
1455
1456 #ifdef CONFIG_WNM
1457
1458 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1459 {
1460         struct wpa_supplicant *wpa_s = eloop_ctx;
1461
1462         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1463                 return;
1464
1465         if (!wpa_s->no_keep_alive) {
1466                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1467                            MAC2STR(wpa_s->bssid));
1468                 /* TODO: could skip this if normal data traffic has been sent */
1469                 /* TODO: Consider using some more appropriate data frame for
1470                  * this */
1471                 if (wpa_s->l2)
1472                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1473                                        (u8 *) "", 0);
1474         }
1475
1476 #ifdef CONFIG_SME
1477         if (wpa_s->sme.bss_max_idle_period) {
1478                 unsigned int msec;
1479                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1480                 if (msec > 100)
1481                         msec -= 100;
1482                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1483                                        wnm_bss_keep_alive, wpa_s, NULL);
1484         }
1485 #endif /* CONFIG_SME */
1486 }
1487
1488
1489 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1490                                    const u8 *ies, size_t ies_len)
1491 {
1492         struct ieee802_11_elems elems;
1493
1494         if (ies == NULL)
1495                 return;
1496
1497         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1498                 return;
1499
1500 #ifdef CONFIG_SME
1501         if (elems.bss_max_idle_period) {
1502                 unsigned int msec;
1503                 wpa_s->sme.bss_max_idle_period =
1504                         WPA_GET_LE16(elems.bss_max_idle_period);
1505                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1506                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1507                            (elems.bss_max_idle_period[2] & 0x01) ?
1508                            " (protected keep-live required)" : "");
1509                 if (wpa_s->sme.bss_max_idle_period == 0)
1510                         wpa_s->sme.bss_max_idle_period = 1;
1511                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1512                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1513                          /* msec times 1000 */
1514                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1515                         if (msec > 100)
1516                                 msec -= 100;
1517                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1518                                                wnm_bss_keep_alive, wpa_s,
1519                                                NULL);
1520                 }
1521         }
1522 #endif /* CONFIG_SME */
1523 }
1524
1525 #endif /* CONFIG_WNM */
1526
1527
1528 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1529 {
1530 #ifdef CONFIG_WNM
1531         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1532 #endif /* CONFIG_WNM */
1533 }
1534
1535
1536 #ifdef CONFIG_INTERWORKING
1537
1538 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1539                             size_t len)
1540 {
1541         int res;
1542
1543         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1544         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1545         if (res) {
1546                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1547         }
1548
1549         return res;
1550 }
1551
1552
1553 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1554                                             const u8 *ies, size_t ies_len)
1555 {
1556         struct ieee802_11_elems elems;
1557
1558         if (ies == NULL)
1559                 return;
1560
1561         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1562                 return;
1563
1564         if (elems.qos_map_set) {
1565                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1566                                  elems.qos_map_set_len);
1567         }
1568 }
1569
1570 #endif /* CONFIG_INTERWORKING */
1571
1572
1573 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1574                                           union wpa_event_data *data)
1575 {
1576         int l, len, found = 0, wpa_found, rsn_found;
1577         const u8 *p;
1578 #ifdef CONFIG_IEEE80211R
1579         u8 bssid[ETH_ALEN];
1580 #endif /* CONFIG_IEEE80211R */
1581
1582         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1583         if (data->assoc_info.req_ies)
1584                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1585                             data->assoc_info.req_ies_len);
1586         if (data->assoc_info.resp_ies) {
1587                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1588                             data->assoc_info.resp_ies_len);
1589 #ifdef CONFIG_TDLS
1590                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1591                                         data->assoc_info.resp_ies_len);
1592 #endif /* CONFIG_TDLS */
1593 #ifdef CONFIG_WNM
1594                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1595                                        data->assoc_info.resp_ies_len);
1596 #endif /* CONFIG_WNM */
1597 #ifdef CONFIG_INTERWORKING
1598                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1599                                                 data->assoc_info.resp_ies_len);
1600 #endif /* CONFIG_INTERWORKING */
1601         }
1602         if (data->assoc_info.beacon_ies)
1603                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1604                             data->assoc_info.beacon_ies,
1605                             data->assoc_info.beacon_ies_len);
1606         if (data->assoc_info.freq)
1607                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1608                         data->assoc_info.freq);
1609
1610         p = data->assoc_info.req_ies;
1611         l = data->assoc_info.req_ies_len;
1612
1613         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1614         while (p && l >= 2) {
1615                 len = p[1] + 2;
1616                 if (len > l) {
1617                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1618                                     p, l);
1619                         break;
1620                 }
1621                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1622                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1623                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1624                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1625                                 break;
1626                         found = 1;
1627                         wpa_find_assoc_pmkid(wpa_s);
1628                         break;
1629                 }
1630                 l -= len;
1631                 p += len;
1632         }
1633         if (!found && data->assoc_info.req_ies)
1634                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1635
1636 #ifdef CONFIG_IEEE80211R
1637 #ifdef CONFIG_SME
1638         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1639                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1640                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1641                                                  data->assoc_info.resp_ies,
1642                                                  data->assoc_info.resp_ies_len,
1643                                                  bssid) < 0) {
1644                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1645                                 "Reassociation Response failed");
1646                         wpa_supplicant_deauthenticate(
1647                                 wpa_s, WLAN_REASON_INVALID_IE);
1648                         return -1;
1649                 }
1650         }
1651
1652         p = data->assoc_info.resp_ies;
1653         l = data->assoc_info.resp_ies_len;
1654
1655 #ifdef CONFIG_WPS_STRICT
1656         if (p && wpa_s->current_ssid &&
1657             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1658                 struct wpabuf *wps;
1659                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1660                 if (wps == NULL) {
1661                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1662                                 "include WPS IE in (Re)Association Response");
1663                         return -1;
1664                 }
1665
1666                 if (wps_validate_assoc_resp(wps) < 0) {
1667                         wpabuf_free(wps);
1668                         wpa_supplicant_deauthenticate(
1669                                 wpa_s, WLAN_REASON_INVALID_IE);
1670                         return -1;
1671                 }
1672                 wpabuf_free(wps);
1673         }
1674 #endif /* CONFIG_WPS_STRICT */
1675
1676         /* Go through the IEs and make a copy of the MDIE, if present. */
1677         while (p && l >= 2) {
1678                 len = p[1] + 2;
1679                 if (len > l) {
1680                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1681                                     p, l);
1682                         break;
1683                 }
1684                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1685                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1686                         wpa_s->sme.ft_used = 1;
1687                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1688                                   MOBILITY_DOMAIN_ID_LEN);
1689                         break;
1690                 }
1691                 l -= len;
1692                 p += len;
1693         }
1694 #endif /* CONFIG_SME */
1695
1696         /* Process FT when SME is in the driver */
1697         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1698             wpa_ft_is_completed(wpa_s->wpa)) {
1699                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1700                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1701                                                  data->assoc_info.resp_ies,
1702                                                  data->assoc_info.resp_ies_len,
1703                                                  bssid) < 0) {
1704                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1705                                 "Reassociation Response failed");
1706                         wpa_supplicant_deauthenticate(
1707                                 wpa_s, WLAN_REASON_INVALID_IE);
1708                         return -1;
1709                 }
1710                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1711         }
1712
1713         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1714                              data->assoc_info.resp_ies_len);
1715 #endif /* CONFIG_IEEE80211R */
1716
1717         /* WPA/RSN IE from Beacon/ProbeResp */
1718         p = data->assoc_info.beacon_ies;
1719         l = data->assoc_info.beacon_ies_len;
1720
1721         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1722          */
1723         wpa_found = rsn_found = 0;
1724         while (p && l >= 2) {
1725                 len = p[1] + 2;
1726                 if (len > l) {
1727                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1728                                     p, l);
1729                         break;
1730                 }
1731                 if (!wpa_found &&
1732                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1733                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1734                         wpa_found = 1;
1735                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1736                 }
1737
1738                 if (!rsn_found &&
1739                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1740                         rsn_found = 1;
1741                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1742                 }
1743
1744                 l -= len;
1745                 p += len;
1746         }
1747
1748         if (!wpa_found && data->assoc_info.beacon_ies)
1749                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1750         if (!rsn_found && data->assoc_info.beacon_ies)
1751                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1752         if (wpa_found || rsn_found)
1753                 wpa_s->ap_ies_from_associnfo = 1;
1754
1755         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1756             wpa_s->assoc_freq != data->assoc_info.freq) {
1757                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1758                            "%u to %u MHz",
1759                            wpa_s->assoc_freq, data->assoc_info.freq);
1760                 wpa_supplicant_update_scan_results(wpa_s);
1761         }
1762
1763         wpa_s->assoc_freq = data->assoc_info.freq;
1764
1765         return 0;
1766 }
1767
1768
1769 static struct wpa_bss * wpa_supplicant_get_new_bss(
1770         struct wpa_supplicant *wpa_s, const u8 *bssid)
1771 {
1772         struct wpa_bss *bss = NULL;
1773         struct wpa_ssid *ssid = wpa_s->current_ssid;
1774
1775         if (ssid->ssid_len > 0)
1776                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
1777         if (!bss)
1778                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1779
1780         return bss;
1781 }
1782
1783
1784 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1785 {
1786         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1787
1788         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1789                 return -1;
1790
1791         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1792                 return 0;
1793
1794         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1795                                         WPA_IE_VENDOR_TYPE);
1796         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1797
1798         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1799                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1800             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1801                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1802                 return -1;
1803
1804         return 0;
1805 }
1806
1807
1808 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1809                                        union wpa_event_data *data)
1810 {
1811         u8 bssid[ETH_ALEN];
1812         int ft_completed;
1813
1814 #ifdef CONFIG_AP
1815         if (wpa_s->ap_iface) {
1816                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1817                                     data->assoc_info.addr,
1818                                     data->assoc_info.req_ies,
1819                                     data->assoc_info.req_ies_len,
1820                                     data->assoc_info.reassoc);
1821                 return;
1822         }
1823 #endif /* CONFIG_AP */
1824
1825         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1826         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1827                 return;
1828
1829         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1830                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1831                 wpa_supplicant_deauthenticate(
1832                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1833                 return;
1834         }
1835
1836         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1837         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1838                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1839                         MACSTR, MAC2STR(bssid));
1840                 random_add_randomness(bssid, ETH_ALEN);
1841                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1842                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1843                 wpas_notify_bssid_changed(wpa_s);
1844
1845                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1846                         wpa_clear_keys(wpa_s, bssid);
1847                 }
1848                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1849                         wpa_supplicant_deauthenticate(
1850                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1851                         return;
1852                 }
1853                 if (wpa_s->current_ssid) {
1854                         struct wpa_bss *bss = NULL;
1855
1856                         bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1857                         if (!bss) {
1858                                 wpa_supplicant_update_scan_results(wpa_s);
1859
1860                                 /* Get the BSS from the new scan results */
1861                                 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1862                         }
1863
1864                         if (bss)
1865                                 wpa_s->current_bss = bss;
1866                 }
1867
1868                 if (wpa_s->conf->ap_scan == 1 &&
1869                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1870                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1871                                 wpa_msg(wpa_s, MSG_WARNING,
1872                                         "WPA/RSN IEs not updated");
1873                 }
1874         }
1875
1876 #ifdef CONFIG_SME
1877         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1878         wpa_s->sme.prev_bssid_set = 1;
1879 #endif /* CONFIG_SME */
1880
1881         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1882         if (wpa_s->current_ssid) {
1883                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1884                  * initialized before association, but for other modes,
1885                  * initialize PC/SC here, if the current configuration needs
1886                  * smartcard or SIM/USIM. */
1887                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1888         }
1889         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1890         if (wpa_s->l2)
1891                 l2_packet_notify_auth_start(wpa_s->l2);
1892
1893         /*
1894          * Set portEnabled first to FALSE in order to get EAP state machine out
1895          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1896          * state machine may transit to AUTHENTICATING state based on obsolete
1897          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1898          * AUTHENTICATED without ever giving chance to EAP state machine to
1899          * reset the state.
1900          */
1901         if (!ft_completed) {
1902                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1903                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1904         }
1905         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1906                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1907         /* 802.1X::portControl = Auto */
1908         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1909         wpa_s->eapol_received = 0;
1910         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1911             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1912             (wpa_s->current_ssid &&
1913              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1914                 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
1915                     (wpa_s->drv_flags &
1916                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1917                         /*
1918                          * Set the key after having received joined-IBSS event
1919                          * from the driver.
1920                          */
1921                         wpa_supplicant_set_wpa_none_key(wpa_s,
1922                                                         wpa_s->current_ssid);
1923                 }
1924                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1925                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1926         } else if (!ft_completed) {
1927                 /* Timeout for receiving the first EAPOL packet */
1928                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1929         }
1930         wpa_supplicant_cancel_scan(wpa_s);
1931
1932         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1933             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1934                 /*
1935                  * We are done; the driver will take care of RSN 4-way
1936                  * handshake.
1937                  */
1938                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1939                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1940                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1941                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1942         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1943                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1944                 /*
1945                  * The driver will take care of RSN 4-way handshake, so we need
1946                  * to allow EAPOL supplicant to complete its work without
1947                  * waiting for WPA supplicant.
1948                  */
1949                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1950         } else if (ft_completed) {
1951                 /*
1952                  * FT protocol completed - make sure EAPOL state machine ends
1953                  * up in authenticated.
1954                  */
1955                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1956                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1957                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1958                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1959         }
1960
1961         wpa_s->last_eapol_matches_bssid = 0;
1962
1963         if (wpa_s->pending_eapol_rx) {
1964                 struct os_reltime now, age;
1965                 os_get_reltime(&now);
1966                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1967                 if (age.sec == 0 && age.usec < 100000 &&
1968                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1969                     0) {
1970                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1971                                 "frame that was received just before "
1972                                 "association notification");
1973                         wpa_supplicant_rx_eapol(
1974                                 wpa_s, wpa_s->pending_eapol_rx_src,
1975                                 wpabuf_head(wpa_s->pending_eapol_rx),
1976                                 wpabuf_len(wpa_s->pending_eapol_rx));
1977                 }
1978                 wpabuf_free(wpa_s->pending_eapol_rx);
1979                 wpa_s->pending_eapol_rx = NULL;
1980         }
1981
1982         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1983              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1984             wpa_s->current_ssid &&
1985             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1986                 /* Set static WEP keys again */
1987                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1988         }
1989
1990 #ifdef CONFIG_IBSS_RSN
1991         if (wpa_s->current_ssid &&
1992             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1993             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1994             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1995             wpa_s->ibss_rsn == NULL) {
1996                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1997                 if (!wpa_s->ibss_rsn) {
1998                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1999                         wpa_supplicant_deauthenticate(
2000                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2001                         return;
2002                 }
2003
2004                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2005         }
2006 #endif /* CONFIG_IBSS_RSN */
2007
2008         wpas_wps_notify_assoc(wpa_s, bssid);
2009 }
2010
2011
2012 static int disconnect_reason_recoverable(u16 reason_code)
2013 {
2014         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2015                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2016                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2017 }
2018
2019
2020 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2021                                           u16 reason_code,
2022                                           int locally_generated)
2023 {
2024         const u8 *bssid;
2025
2026         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2027                 /*
2028                  * At least Host AP driver and a Prism3 card seemed to be
2029                  * generating streams of disconnected events when configuring
2030                  * IBSS for WPA-None. Ignore them for now.
2031                  */
2032                 return;
2033         }
2034
2035         bssid = wpa_s->bssid;
2036         if (is_zero_ether_addr(bssid))
2037                 bssid = wpa_s->pending_bssid;
2038
2039         if (!is_zero_ether_addr(bssid) ||
2040             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2041                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2042                         " reason=%d%s",
2043                         MAC2STR(bssid), reason_code,
2044                         locally_generated ? " locally_generated=1" : "");
2045         }
2046 }
2047
2048
2049 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2050                                  int locally_generated)
2051 {
2052         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2053             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2054                 return 0; /* Not in 4-way handshake with PSK */
2055
2056         /*
2057          * It looks like connection was lost while trying to go through PSK
2058          * 4-way handshake. Filter out known disconnection cases that are caused
2059          * by something else than PSK mismatch to avoid confusing reports.
2060          */
2061
2062         if (locally_generated) {
2063                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2064                         return 0;
2065         }
2066
2067         return 1;
2068 }
2069
2070
2071 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2072                                                  u16 reason_code,
2073                                                  int locally_generated)
2074 {
2075         const u8 *bssid;
2076         int authenticating;
2077         u8 prev_pending_bssid[ETH_ALEN];
2078         struct wpa_bss *fast_reconnect = NULL;
2079 #ifndef CONFIG_NO_SCAN_PROCESSING
2080         struct wpa_ssid *fast_reconnect_ssid = NULL;
2081 #endif /* CONFIG_NO_SCAN_PROCESSING */
2082         struct wpa_ssid *last_ssid;
2083
2084         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2085         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2086
2087         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2088                 /*
2089                  * At least Host AP driver and a Prism3 card seemed to be
2090                  * generating streams of disconnected events when configuring
2091                  * IBSS for WPA-None. Ignore them for now.
2092                  */
2093                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2094                         "IBSS/WPA-None mode");
2095                 return;
2096         }
2097
2098         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2099                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2100                         "pre-shared key may be incorrect");
2101                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2102                         return; /* P2P group removed */
2103                 wpas_auth_failed(wpa_s);
2104         }
2105         if (!wpa_s->disconnected &&
2106             (!wpa_s->auto_reconnect_disabled ||
2107              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)) {
2108                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2109                         "reconnect (wps=%d wpa_state=%d)",
2110                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2111                         wpa_s->wpa_state);
2112                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2113                     wpa_s->current_ssid &&
2114                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2115                     !locally_generated &&
2116                     disconnect_reason_recoverable(reason_code)) {
2117                         /*
2118                          * It looks like the AP has dropped association with
2119                          * us, but could allow us to get back in. Try to
2120                          * reconnect to the same BSS without full scan to save
2121                          * time for some common cases.
2122                          */
2123                         fast_reconnect = wpa_s->current_bss;
2124 #ifndef CONFIG_NO_SCAN_PROCESSING
2125                         fast_reconnect_ssid = wpa_s->current_ssid;
2126 #endif /* CONFIG_NO_SCAN_PROCESSING */
2127                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2128                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2129                 else
2130                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2131                                 "immediate scan");
2132         } else {
2133                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2134                         "try to re-connect");
2135                 wpa_s->reassociate = 0;
2136                 wpa_s->disconnected = 1;
2137                 wpa_supplicant_cancel_sched_scan(wpa_s);
2138         }
2139         bssid = wpa_s->bssid;
2140         if (is_zero_ether_addr(bssid))
2141                 bssid = wpa_s->pending_bssid;
2142         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2143                 wpas_connection_failed(wpa_s, bssid);
2144         wpa_sm_notify_disassoc(wpa_s->wpa);
2145         if (locally_generated)
2146                 wpa_s->disconnect_reason = -reason_code;
2147         else
2148                 wpa_s->disconnect_reason = reason_code;
2149         wpas_notify_disconnect_reason(wpa_s);
2150         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2151                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2152                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2153         }
2154         last_ssid = wpa_s->current_ssid;
2155         wpa_supplicant_mark_disassoc(wpa_s);
2156
2157         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2158                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2159                 wpa_s->current_ssid = last_ssid;
2160         }
2161
2162         if (fast_reconnect) {
2163 #ifndef CONFIG_NO_SCAN_PROCESSING
2164                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2165                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2166                                            fast_reconnect_ssid) < 0) {
2167                         /* Recover through full scan */
2168                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2169                 }
2170 #endif /* CONFIG_NO_SCAN_PROCESSING */
2171         }
2172 }
2173
2174
2175 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2176 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2177 {
2178         struct wpa_supplicant *wpa_s = eloop_ctx;
2179
2180         if (!wpa_s->pending_mic_error_report)
2181                 return;
2182
2183         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2184         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2185         wpa_s->pending_mic_error_report = 0;
2186 }
2187 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2188
2189
2190 static void
2191 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2192                                          union wpa_event_data *data)
2193 {
2194         int pairwise;
2195         struct os_reltime t;
2196
2197         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2198         pairwise = (data && data->michael_mic_failure.unicast);
2199         os_get_reltime(&t);
2200         if ((wpa_s->last_michael_mic_error.sec &&
2201              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2202             wpa_s->pending_mic_error_report) {
2203                 if (wpa_s->pending_mic_error_report) {
2204                         /*
2205                          * Send the pending MIC error report immediately since
2206                          * we are going to start countermeasures and AP better
2207                          * do the same.
2208                          */
2209                         wpa_sm_key_request(wpa_s->wpa, 1,
2210                                            wpa_s->pending_mic_error_pairwise);
2211                 }
2212
2213                 /* Send the new MIC error report immediately since we are going
2214                  * to start countermeasures and AP better do the same.
2215                  */
2216                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2217
2218                 /* initialize countermeasures */
2219                 wpa_s->countermeasures = 1;
2220
2221                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2222
2223                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2224
2225                 /*
2226                  * Need to wait for completion of request frame. We do not get
2227                  * any callback for the message completion, so just wait a
2228                  * short while and hope for the best. */
2229                 os_sleep(0, 10000);
2230
2231                 wpa_drv_set_countermeasures(wpa_s, 1);
2232                 wpa_supplicant_deauthenticate(wpa_s,
2233                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2234                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2235                                      wpa_s, NULL);
2236                 eloop_register_timeout(60, 0,
2237                                        wpa_supplicant_stop_countermeasures,
2238                                        wpa_s, NULL);
2239                 /* TODO: mark the AP rejected for 60 second. STA is
2240                  * allowed to associate with another AP.. */
2241         } else {
2242 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2243                 if (wpa_s->mic_errors_seen) {
2244                         /*
2245                          * Reduce the effectiveness of Michael MIC error
2246                          * reports as a means for attacking against TKIP if
2247                          * more than one MIC failure is noticed with the same
2248                          * PTK. We delay the transmission of the reports by a
2249                          * random time between 0 and 60 seconds in order to
2250                          * force the attacker wait 60 seconds before getting
2251                          * the information on whether a frame resulted in a MIC
2252                          * failure.
2253                          */
2254                         u8 rval[4];
2255                         int sec;
2256
2257                         if (os_get_random(rval, sizeof(rval)) < 0)
2258                                 sec = os_random() % 60;
2259                         else
2260                                 sec = WPA_GET_BE32(rval) % 60;
2261                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2262                                 "report %d seconds", sec);
2263                         wpa_s->pending_mic_error_report = 1;
2264                         wpa_s->pending_mic_error_pairwise = pairwise;
2265                         eloop_cancel_timeout(
2266                                 wpa_supplicant_delayed_mic_error_report,
2267                                 wpa_s, NULL);
2268                         eloop_register_timeout(
2269                                 sec, os_random() % 1000000,
2270                                 wpa_supplicant_delayed_mic_error_report,
2271                                 wpa_s, NULL);
2272                 } else {
2273                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2274                 }
2275 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2276                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2277 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2278         }
2279         wpa_s->last_michael_mic_error = t;
2280         wpa_s->mic_errors_seen++;
2281 }
2282
2283
2284 #ifdef CONFIG_TERMINATE_ONLASTIF
2285 static int any_interfaces(struct wpa_supplicant *head)
2286 {
2287         struct wpa_supplicant *wpa_s;
2288
2289         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2290                 if (!wpa_s->interface_removed)
2291                         return 1;
2292         return 0;
2293 }
2294 #endif /* CONFIG_TERMINATE_ONLASTIF */
2295
2296
2297 static void
2298 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2299                                       union wpa_event_data *data)
2300 {
2301         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2302                 return;
2303
2304         switch (data->interface_status.ievent) {
2305         case EVENT_INTERFACE_ADDED:
2306                 if (!wpa_s->interface_removed)
2307                         break;
2308                 wpa_s->interface_removed = 0;
2309                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2310                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2311                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2312                                 "driver after interface was added");
2313                 }
2314                 break;
2315         case EVENT_INTERFACE_REMOVED:
2316                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2317                 wpa_s->interface_removed = 1;
2318                 wpa_supplicant_mark_disassoc(wpa_s);
2319                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2320                 l2_packet_deinit(wpa_s->l2);
2321                 wpa_s->l2 = NULL;
2322 #ifdef CONFIG_IBSS_RSN
2323                 ibss_rsn_deinit(wpa_s->ibss_rsn);
2324                 wpa_s->ibss_rsn = NULL;
2325 #endif /* CONFIG_IBSS_RSN */
2326 #ifdef CONFIG_TERMINATE_ONLASTIF
2327                 /* check if last interface */
2328                 if (!any_interfaces(wpa_s->global->ifaces))
2329                         eloop_terminate();
2330 #endif /* CONFIG_TERMINATE_ONLASTIF */
2331                 break;
2332         }
2333 }
2334
2335
2336 #ifdef CONFIG_PEERKEY
2337 static void
2338 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2339                               union wpa_event_data *data)
2340 {
2341         if (data == NULL)
2342                 return;
2343         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2344 }
2345 #endif /* CONFIG_PEERKEY */
2346
2347
2348 #ifdef CONFIG_TDLS
2349 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2350                                       union wpa_event_data *data)
2351 {
2352         if (data == NULL)
2353                 return;
2354         switch (data->tdls.oper) {
2355         case TDLS_REQUEST_SETUP:
2356                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2357                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2358                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2359                 else
2360                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2361                 break;
2362         case TDLS_REQUEST_TEARDOWN:
2363                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2364                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2365                                                data->tdls.reason_code);
2366                 else
2367                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2368                                           data->tdls.peer);
2369                 break;
2370         }
2371 }
2372 #endif /* CONFIG_TDLS */
2373
2374
2375 #ifdef CONFIG_WNM
2376 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2377                                      union wpa_event_data *data)
2378 {
2379         if (data == NULL)
2380                 return;
2381         switch (data->wnm.oper) {
2382         case WNM_OPER_SLEEP:
2383                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2384                            "(action=%d, intval=%d)",
2385                            data->wnm.sleep_action, data->wnm.sleep_intval);
2386                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2387                                              data->wnm.sleep_intval, NULL);
2388                 break;
2389         }
2390 }
2391 #endif /* CONFIG_WNM */
2392
2393
2394 #ifdef CONFIG_IEEE80211R
2395 static void
2396 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2397                                  union wpa_event_data *data)
2398 {
2399         if (data == NULL)
2400                 return;
2401
2402         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2403                                     data->ft_ies.ies_len,
2404                                     data->ft_ies.ft_action,
2405                                     data->ft_ies.target_ap,
2406                                     data->ft_ies.ric_ies,
2407                                     data->ft_ies.ric_ies_len) < 0) {
2408                 /* TODO: prevent MLME/driver from trying to associate? */
2409         }
2410 }
2411 #endif /* CONFIG_IEEE80211R */
2412
2413
2414 #ifdef CONFIG_IBSS_RSN
2415 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2416                                                 union wpa_event_data *data)
2417 {
2418         struct wpa_ssid *ssid;
2419         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2420                 return;
2421         if (data == NULL)
2422                 return;
2423         ssid = wpa_s->current_ssid;
2424         if (ssid == NULL)
2425                 return;
2426         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2427                 return;
2428
2429         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2430 }
2431
2432
2433 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2434                                            union wpa_event_data *data)
2435 {
2436         struct wpa_ssid *ssid = wpa_s->current_ssid;
2437
2438         if (ssid == NULL)
2439                 return;
2440
2441         /* check if the ssid is correctly configured as IBSS/RSN */
2442         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2443                 return;
2444
2445         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2446                              data->rx_mgmt.frame_len);
2447 }
2448 #endif /* CONFIG_IBSS_RSN */
2449
2450
2451 #ifdef CONFIG_IEEE80211R
2452 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2453                          size_t len)
2454 {
2455         const u8 *sta_addr, *target_ap_addr;
2456         u16 status;
2457
2458         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2459         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2460                 return; /* only SME case supported for now */
2461         if (len < 1 + 2 * ETH_ALEN + 2)
2462                 return;
2463         if (data[0] != 2)
2464                 return; /* Only FT Action Response is supported for now */
2465         sta_addr = data + 1;
2466         target_ap_addr = data + 1 + ETH_ALEN;
2467         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2468         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2469                 MACSTR " TargetAP " MACSTR " status %u",
2470                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2471
2472         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2473                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2474                         " in FT Action Response", MAC2STR(sta_addr));
2475                 return;
2476         }
2477
2478         if (status) {
2479                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2480                         "failure (status code %d)", status);
2481                 /* TODO: report error to FT code(?) */
2482                 return;
2483         }
2484
2485         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2486                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2487                                     target_ap_addr, NULL, 0) < 0)
2488                 return;
2489
2490 #ifdef CONFIG_SME
2491         {
2492                 struct wpa_bss *bss;
2493                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2494                 if (bss)
2495                         wpa_s->sme.freq = bss->freq;
2496                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2497                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2498                               WLAN_AUTH_FT);
2499         }
2500 #endif /* CONFIG_SME */
2501 }
2502 #endif /* CONFIG_IEEE80211R */
2503
2504
2505 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2506                                                struct unprot_deauth *e)
2507 {
2508 #ifdef CONFIG_IEEE80211W
2509         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2510                    "dropped: " MACSTR " -> " MACSTR
2511                    " (reason code %u)",
2512                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2513         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2514 #endif /* CONFIG_IEEE80211W */
2515 }
2516
2517
2518 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2519                                                  struct unprot_disassoc *e)
2520 {
2521 #ifdef CONFIG_IEEE80211W
2522         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2523                    "dropped: " MACSTR " -> " MACSTR
2524                    " (reason code %u)",
2525                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2526         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2527 #endif /* CONFIG_IEEE80211W */
2528 }
2529
2530
2531 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2532                                   u16 reason_code, int locally_generated,
2533                                   const u8 *ie, size_t ie_len, int deauth)
2534 {
2535 #ifdef CONFIG_AP
2536         if (wpa_s->ap_iface && addr) {
2537                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2538                 return;
2539         }
2540
2541         if (wpa_s->ap_iface) {
2542                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2543                 return;
2544         }
2545 #endif /* CONFIG_AP */
2546
2547         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2548
2549         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2550               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2551                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2552                eapol_sm_failed(wpa_s->eapol))) &&
2553              !wpa_s->eap_expected_failure))
2554                 wpas_auth_failed(wpa_s);
2555
2556 #ifdef CONFIG_P2P
2557         if (deauth && reason_code > 0) {
2558                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2559                                           locally_generated) > 0) {
2560                         /*
2561                          * The interface was removed, so cannot continue
2562                          * processing any additional operations after this.
2563                          */
2564                         return;
2565                 }
2566         }
2567 #endif /* CONFIG_P2P */
2568
2569         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2570                                              locally_generated);
2571 }
2572
2573
2574 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2575                                 struct disassoc_info *info)
2576 {
2577         u16 reason_code = 0;
2578         int locally_generated = 0;
2579         const u8 *addr = NULL;
2580         const u8 *ie = NULL;
2581         size_t ie_len = 0;
2582
2583         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2584
2585         if (info) {
2586                 addr = info->addr;
2587                 ie = info->ie;
2588                 ie_len = info->ie_len;
2589                 reason_code = info->reason_code;
2590                 locally_generated = info->locally_generated;
2591                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2592                         locally_generated ? " (locally generated)" : "");
2593                 if (addr)
2594                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2595                                 MAC2STR(addr));
2596                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2597                             ie, ie_len);
2598         }
2599
2600 #ifdef CONFIG_AP
2601         if (wpa_s->ap_iface && info && info->addr) {
2602                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2603                 return;
2604         }
2605
2606         if (wpa_s->ap_iface) {
2607                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2608                 return;
2609         }
2610 #endif /* CONFIG_AP */
2611
2612 #ifdef CONFIG_P2P
2613         if (info) {
2614                 wpas_p2p_disassoc_notif(
2615                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2616                         locally_generated);
2617         }
2618 #endif /* CONFIG_P2P */
2619
2620         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2621                 sme_event_disassoc(wpa_s, info);
2622
2623         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2624                               ie, ie_len, 0);
2625 }
2626
2627
2628 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2629                               struct deauth_info *info)
2630 {
2631         u16 reason_code = 0;
2632         int locally_generated = 0;
2633         const u8 *addr = NULL;
2634         const u8 *ie = NULL;
2635         size_t ie_len = 0;
2636
2637         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2638
2639         if (info) {
2640                 addr = info->addr;
2641                 ie = info->ie;
2642                 ie_len = info->ie_len;
2643                 reason_code = info->reason_code;
2644                 locally_generated = info->locally_generated;
2645                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2646                         reason_code,
2647                         locally_generated ? " (locally generated)" : "");
2648                 if (addr) {
2649                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2650                                 MAC2STR(addr));
2651                 }
2652                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2653                             ie, ie_len);
2654         }
2655
2656         wpa_reset_ft_completed(wpa_s->wpa);
2657
2658         wpas_event_disconnect(wpa_s, addr, reason_code,
2659                               locally_generated, ie, ie_len, 1);
2660 }
2661
2662
2663 static void wpa_supplicant_update_channel_list(struct wpa_supplicant *wpa_s)
2664 {
2665         struct wpa_supplicant *ifs;
2666
2667         if (wpa_s->drv_priv == NULL)
2668                 return; /* Ignore event during drv initialization */
2669
2670         free_hw_features(wpa_s);
2671         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2672                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2673
2674 #ifdef CONFIG_P2P
2675         wpas_p2p_update_channel_list(wpa_s);
2676 #endif /* CONFIG_P2P */
2677
2678         /*
2679          * Check other interfaces to see if they share the same radio. If
2680          * so, they get updated with this same hw mode info.
2681          */
2682         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2683                          radio_list) {
2684                 if (ifs != wpa_s) {
2685                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2686                                    ifs->ifname);
2687                         free_hw_features(ifs);
2688                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2689                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2690                 }
2691         }
2692 }
2693
2694
2695 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2696                                       const struct ieee80211_mgmt *mgmt,
2697                                       size_t len, int freq)
2698 {
2699         const u8 *payload;
2700         size_t plen;
2701         u8 category;
2702
2703         if (len < IEEE80211_HDRLEN + 2)
2704                 return;
2705
2706         payload = &mgmt->u.action.category;
2707         category = *payload++;
2708         plen = (((const u8 *) mgmt) + len) - payload;
2709
2710         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2711                 " Category=%u DataLen=%d freq=%d MHz",
2712                 MAC2STR(mgmt->sa), category, (int) plen, freq);
2713
2714 #ifdef CONFIG_IEEE80211R
2715         if (category == WLAN_ACTION_FT) {
2716                 ft_rx_action(wpa_s, payload, plen);
2717                 return;
2718         }
2719 #endif /* CONFIG_IEEE80211R */
2720
2721 #ifdef CONFIG_IEEE80211W
2722 #ifdef CONFIG_SME
2723         if (category == WLAN_ACTION_SA_QUERY) {
2724                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2725                 return;
2726         }
2727 #endif /* CONFIG_SME */
2728 #endif /* CONFIG_IEEE80211W */
2729
2730 #ifdef CONFIG_WNM
2731         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2732                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2733                 return;
2734         }
2735 #endif /* CONFIG_WNM */
2736
2737 #ifdef CONFIG_GAS
2738         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2739              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2740             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2741                          mgmt->u.action.category,
2742                          payload, plen, freq) == 0)
2743                 return;
2744 #endif /* CONFIG_GAS */
2745
2746 #ifdef CONFIG_TDLS
2747         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2748             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2749                 wpa_dbg(wpa_s, MSG_DEBUG,
2750                         "TDLS: Received Discovery Response from " MACSTR,
2751                         MAC2STR(mgmt->sa));
2752                 return;
2753         }
2754 #endif /* CONFIG_TDLS */
2755
2756 #ifdef CONFIG_INTERWORKING
2757         if (category == WLAN_ACTION_QOS && plen >= 1 &&
2758             payload[0] == QOS_QOS_MAP_CONFIG) {
2759                 const u8 *pos = payload + 1;
2760                 size_t qlen = plen - 1;
2761                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2762                         MACSTR, MAC2STR(mgmt->sa));
2763                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2764                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2765                     pos[1] <= qlen - 2 && pos[1] >= 16)
2766                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2767                 return;
2768         }
2769 #endif /* CONFIG_INTERWORKING */
2770
2771 #ifdef CONFIG_P2P
2772         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2773                            category, payload, plen, freq);
2774 #endif /* CONFIG_P2P */
2775 }
2776
2777
2778 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2779                           union wpa_event_data *data)
2780 {
2781         struct wpa_supplicant *wpa_s = ctx;
2782
2783         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2784             event != EVENT_INTERFACE_ENABLED &&
2785             event != EVENT_INTERFACE_STATUS &&
2786             event != EVENT_SCHED_SCAN_STOPPED) {
2787                 wpa_dbg(wpa_s, MSG_DEBUG,
2788                         "Ignore event %s (%d) while interface is disabled",
2789                         event_to_string(event), event);
2790                 return;
2791         }
2792
2793 #ifndef CONFIG_NO_STDOUT_DEBUG
2794 {
2795         int level = MSG_DEBUG;
2796
2797         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2798                 const struct ieee80211_hdr *hdr;
2799                 u16 fc;
2800                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2801                 fc = le_to_host16(hdr->frame_control);
2802                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2803                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2804                         level = MSG_EXCESSIVE;
2805         }
2806
2807         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2808                 event_to_string(event), event);
2809 }
2810 #endif /* CONFIG_NO_STDOUT_DEBUG */
2811
2812         switch (event) {
2813         case EVENT_AUTH:
2814                 sme_event_auth(wpa_s, data);
2815                 break;
2816         case EVENT_ASSOC:
2817                 wpa_supplicant_event_assoc(wpa_s, data);
2818                 break;
2819         case EVENT_DISASSOC:
2820                 wpas_event_disassoc(wpa_s,
2821                                     data ? &data->disassoc_info : NULL);
2822                 break;
2823         case EVENT_DEAUTH:
2824                 wpas_event_deauth(wpa_s,
2825                                   data ? &data->deauth_info : NULL);
2826                 break;
2827         case EVENT_MICHAEL_MIC_FAILURE:
2828                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2829                 break;
2830 #ifndef CONFIG_NO_SCAN_PROCESSING
2831         case EVENT_SCAN_STARTED:
2832                 os_get_reltime(&wpa_s->scan_start_time);
2833                 if (wpa_s->own_scan_requested) {
2834                         struct os_reltime diff;
2835
2836                         os_reltime_sub(&wpa_s->scan_start_time,
2837                                        &wpa_s->scan_trigger_time, &diff);
2838                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
2839                                 diff.sec, diff.usec);
2840                         wpa_s->own_scan_requested = 0;
2841                         wpa_s->own_scan_running = 1;
2842                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
2843                             wpa_s->manual_scan_use_id) {
2844                                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED "id=%u",
2845                                         wpa_s->manual_scan_id);
2846                         } else {
2847                                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
2848                         }
2849                 } else {
2850                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
2851                         wpa_s->external_scan_running = 1;
2852                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
2853                 }
2854                 break;
2855         case EVENT_SCAN_RESULTS:
2856                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
2857                         struct os_reltime now, diff;
2858                         os_get_reltime(&now);
2859                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
2860                         wpa_s->scan_start_time.sec = 0;
2861                         wpa_s->scan_start_time.usec = 0;
2862                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
2863                                 diff.sec, diff.usec);
2864                 }
2865                 wpa_supplicant_event_scan_results(wpa_s, data);
2866                 wpa_s->own_scan_running = 0;
2867                 wpa_s->external_scan_running = 0;
2868                 radio_work_check_next(wpa_s);
2869                 break;
2870 #endif /* CONFIG_NO_SCAN_PROCESSING */
2871         case EVENT_ASSOCINFO:
2872                 wpa_supplicant_event_associnfo(wpa_s, data);
2873                 break;
2874         case EVENT_INTERFACE_STATUS:
2875                 wpa_supplicant_event_interface_status(wpa_s, data);
2876                 break;
2877         case EVENT_PMKID_CANDIDATE:
2878                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2879                 break;
2880 #ifdef CONFIG_PEERKEY
2881         case EVENT_STKSTART:
2882                 wpa_supplicant_event_stkstart(wpa_s, data);
2883                 break;
2884 #endif /* CONFIG_PEERKEY */
2885 #ifdef CONFIG_TDLS
2886         case EVENT_TDLS:
2887                 wpa_supplicant_event_tdls(wpa_s, data);
2888                 break;
2889 #endif /* CONFIG_TDLS */
2890 #ifdef CONFIG_WNM
2891         case EVENT_WNM:
2892                 wpa_supplicant_event_wnm(wpa_s, data);
2893                 break;
2894 #endif /* CONFIG_WNM */
2895 #ifdef CONFIG_IEEE80211R
2896         case EVENT_FT_RESPONSE:
2897                 wpa_supplicant_event_ft_response(wpa_s, data);
2898                 break;
2899 #endif /* CONFIG_IEEE80211R */
2900 #ifdef CONFIG_IBSS_RSN
2901         case EVENT_IBSS_RSN_START:
2902                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2903                 break;
2904 #endif /* CONFIG_IBSS_RSN */
2905         case EVENT_ASSOC_REJECT:
2906                 if (data->assoc_reject.bssid)
2907                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2908                                 "bssid=" MACSTR " status_code=%u",
2909                                 MAC2STR(data->assoc_reject.bssid),
2910                                 data->assoc_reject.status_code);
2911                 else
2912                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2913                                 "status_code=%u",
2914                                 data->assoc_reject.status_code);
2915                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2916                         sme_event_assoc_reject(wpa_s, data);
2917                 else {
2918                         const u8 *bssid = data->assoc_reject.bssid;
2919                         if (bssid == NULL || is_zero_ether_addr(bssid))
2920                                 bssid = wpa_s->pending_bssid;
2921                         wpas_connection_failed(wpa_s, bssid);
2922                         wpa_supplicant_mark_disassoc(wpa_s);
2923                 }
2924                 break;
2925         case EVENT_AUTH_TIMED_OUT:
2926                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2927                         sme_event_auth_timed_out(wpa_s, data);
2928                 break;
2929         case EVENT_ASSOC_TIMED_OUT:
2930                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2931                         sme_event_assoc_timed_out(wpa_s, data);
2932                 break;
2933         case EVENT_TX_STATUS:
2934                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2935                         " type=%d stype=%d",
2936                         MAC2STR(data->tx_status.dst),
2937                         data->tx_status.type, data->tx_status.stype);
2938 #ifdef CONFIG_AP
2939                 if (wpa_s->ap_iface == NULL) {
2940 #ifdef CONFIG_OFFCHANNEL
2941                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2942                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2943                                 offchannel_send_action_tx_status(
2944                                         wpa_s, data->tx_status.dst,
2945                                         data->tx_status.data,
2946                                         data->tx_status.data_len,
2947                                         data->tx_status.ack ?
2948                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
2949                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
2950 #endif /* CONFIG_OFFCHANNEL */
2951                         break;
2952                 }
2953 #endif /* CONFIG_AP */
2954 #ifdef CONFIG_OFFCHANNEL
2955                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2956                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2957                 /*
2958                  * Catch TX status events for Action frames we sent via group
2959                  * interface in GO mode.
2960                  */
2961                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2962                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2963                     os_memcmp(wpa_s->parent->pending_action_dst,
2964                               data->tx_status.dst, ETH_ALEN) == 0) {
2965                         offchannel_send_action_tx_status(
2966                                 wpa_s->parent, data->tx_status.dst,
2967                                 data->tx_status.data,
2968                                 data->tx_status.data_len,
2969                                 data->tx_status.ack ?
2970                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
2971                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
2972                         break;
2973                 }
2974 #endif /* CONFIG_OFFCHANNEL */
2975 #ifdef CONFIG_AP
2976                 switch (data->tx_status.type) {
2977                 case WLAN_FC_TYPE_MGMT:
2978                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2979                                       data->tx_status.data_len,
2980                                       data->tx_status.stype,
2981                                       data->tx_status.ack);
2982                         break;
2983                 case WLAN_FC_TYPE_DATA:
2984                         ap_tx_status(wpa_s, data->tx_status.dst,
2985                                      data->tx_status.data,
2986                                      data->tx_status.data_len,
2987                                      data->tx_status.ack);
2988                         break;
2989                 }
2990 #endif /* CONFIG_AP */
2991                 break;
2992 #ifdef CONFIG_AP
2993         case EVENT_EAPOL_TX_STATUS:
2994                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
2995                                    data->eapol_tx_status.data,
2996                                    data->eapol_tx_status.data_len,
2997                                    data->eapol_tx_status.ack);
2998                 break;
2999         case EVENT_DRIVER_CLIENT_POLL_OK:
3000                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3001                 break;
3002         case EVENT_RX_FROM_UNKNOWN:
3003                 if (wpa_s->ap_iface == NULL)
3004                         break;
3005                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3006                                        data->rx_from_unknown.wds);
3007                 break;
3008         case EVENT_CH_SWITCH:
3009                 if (!data)
3010                         break;
3011                 if (!wpa_s->ap_iface) {
3012                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3013                                 "event in non-AP mode");
3014                         break;
3015                 }
3016
3017                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3018                                   data->ch_switch.ht_enabled,
3019                                   data->ch_switch.ch_offset,
3020                                   data->ch_switch.ch_width,
3021                                   data->ch_switch.cf1,
3022                                   data->ch_switch.cf2);
3023                 break;
3024 #endif /* CONFIG_AP */
3025         case EVENT_RX_MGMT: {
3026                 u16 fc, stype;
3027                 const struct ieee80211_mgmt *mgmt;
3028
3029                 mgmt = (const struct ieee80211_mgmt *)
3030                         data->rx_mgmt.frame;
3031                 fc = le_to_host16(mgmt->frame_control);
3032                 stype = WLAN_FC_GET_STYPE(fc);
3033
3034 #ifdef CONFIG_AP
3035                 if (wpa_s->ap_iface == NULL) {
3036 #endif /* CONFIG_AP */
3037 #ifdef CONFIG_P2P
3038                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3039                             data->rx_mgmt.frame_len > 24) {
3040                                 const u8 *src = mgmt->sa;
3041                                 const u8 *ie = mgmt->u.probe_req.variable;
3042                                 size_t ie_len = data->rx_mgmt.frame_len -
3043                                         (mgmt->u.probe_req.variable -
3044                                          data->rx_mgmt.frame);
3045                                 wpas_p2p_probe_req_rx(
3046                                         wpa_s, src, mgmt->da,
3047                                         mgmt->bssid, ie, ie_len,
3048                                         data->rx_mgmt.ssi_signal);
3049                                 break;
3050                         }
3051 #endif /* CONFIG_P2P */
3052 #ifdef CONFIG_IBSS_RSN
3053                         if (stype == WLAN_FC_STYPE_AUTH &&
3054                             data->rx_mgmt.frame_len >= 30) {
3055                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3056                                 break;
3057                         }
3058 #endif /* CONFIG_IBSS_RSN */
3059
3060                         if (stype == WLAN_FC_STYPE_ACTION) {
3061                                 wpas_event_rx_mgmt_action(
3062                                         wpa_s, mgmt, data->rx_mgmt.frame_len,
3063                                         data->rx_mgmt.freq);
3064                                 break;
3065                         }
3066
3067                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3068                                 "management frame in non-AP mode");
3069                         break;
3070 #ifdef CONFIG_AP
3071                 }
3072
3073                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3074                     data->rx_mgmt.frame_len > 24) {
3075                         const u8 *ie = mgmt->u.probe_req.variable;
3076                         size_t ie_len = data->rx_mgmt.frame_len -
3077                                 (mgmt->u.probe_req.variable -
3078                                  data->rx_mgmt.frame);
3079
3080                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3081                                          mgmt->bssid, ie, ie_len,
3082                                          data->rx_mgmt.ssi_signal);
3083                 }
3084
3085                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3086 #endif /* CONFIG_AP */
3087                 break;
3088                 }
3089         case EVENT_RX_PROBE_REQ:
3090                 if (data->rx_probe_req.sa == NULL ||
3091                     data->rx_probe_req.ie == NULL)
3092                         break;
3093 #ifdef CONFIG_AP
3094                 if (wpa_s->ap_iface) {
3095                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3096                                              data->rx_probe_req.sa,
3097                                              data->rx_probe_req.da,
3098                                              data->rx_probe_req.bssid,
3099                                              data->rx_probe_req.ie,
3100                                              data->rx_probe_req.ie_len,
3101                                              data->rx_probe_req.ssi_signal);
3102                         break;
3103                 }
3104 #endif /* CONFIG_AP */
3105 #ifdef CONFIG_P2P
3106                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3107                                       data->rx_probe_req.da,
3108                                       data->rx_probe_req.bssid,
3109                                       data->rx_probe_req.ie,
3110                                       data->rx_probe_req.ie_len,
3111                                       data->rx_probe_req.ssi_signal);
3112 #endif /* CONFIG_P2P */
3113                 break;
3114         case EVENT_REMAIN_ON_CHANNEL:
3115 #ifdef CONFIG_OFFCHANNEL
3116                 offchannel_remain_on_channel_cb(
3117                         wpa_s, data->remain_on_channel.freq,
3118                         data->remain_on_channel.duration);
3119 #endif /* CONFIG_OFFCHANNEL */
3120 #ifdef CONFIG_P2P
3121                 wpas_p2p_remain_on_channel_cb(
3122                         wpa_s, data->remain_on_channel.freq,
3123                         data->remain_on_channel.duration);
3124 #endif /* CONFIG_P2P */
3125                 break;
3126         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3127 #ifdef CONFIG_OFFCHANNEL
3128                 offchannel_cancel_remain_on_channel_cb(
3129                         wpa_s, data->remain_on_channel.freq);
3130 #endif /* CONFIG_OFFCHANNEL */
3131 #ifdef CONFIG_P2P
3132                 wpas_p2p_cancel_remain_on_channel_cb(
3133                         wpa_s, data->remain_on_channel.freq);
3134 #endif /* CONFIG_P2P */
3135                 break;
3136         case EVENT_EAPOL_RX:
3137                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3138                                         data->eapol_rx.data,
3139                                         data->eapol_rx.data_len);
3140                 break;
3141         case EVENT_SIGNAL_CHANGE:
3142                 bgscan_notify_signal_change(
3143                         wpa_s, data->signal_change.above_threshold,
3144                         data->signal_change.current_signal,
3145                         data->signal_change.current_noise,
3146                         data->signal_change.current_txrate);
3147                 break;
3148         case EVENT_INTERFACE_ENABLED:
3149                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3150                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3151                         wpa_supplicant_update_mac_addr(wpa_s);
3152 #ifdef CONFIG_AP
3153                         if (!wpa_s->ap_iface) {
3154                                 wpa_supplicant_set_state(wpa_s,
3155                                                          WPA_DISCONNECTED);
3156                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3157                         } else
3158                                 wpa_supplicant_set_state(wpa_s,
3159                                                          WPA_COMPLETED);
3160 #else /* CONFIG_AP */
3161                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3162                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3163 #endif /* CONFIG_AP */
3164                 }
3165                 break;
3166         case EVENT_INTERFACE_DISABLED:
3167                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3168 #ifdef CONFIG_P2P
3169                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3170                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3171                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3172                         /*
3173                          * The interface was externally disabled. Remove
3174                          * it assuming an external entity will start a
3175                          * new session if needed.
3176                          */
3177                         wpas_p2p_disconnect(wpa_s);
3178                         break;
3179                 }
3180 #endif /* CONFIG_P2P */
3181
3182                 wpa_supplicant_mark_disassoc(wpa_s);
3183                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3184                 break;
3185         case EVENT_CHANNEL_LIST_CHANGED:
3186                 wpa_supplicant_update_channel_list(wpa_s);
3187                 break;
3188         case EVENT_INTERFACE_UNAVAILABLE:
3189 #ifdef CONFIG_P2P
3190                 wpas_p2p_interface_unavailable(wpa_s);
3191 #endif /* CONFIG_P2P */
3192                 break;
3193         case EVENT_BEST_CHANNEL:
3194                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3195                         "(%d %d %d)",
3196                         data->best_chan.freq_24, data->best_chan.freq_5,
3197                         data->best_chan.freq_overall);
3198                 wpa_s->best_24_freq = data->best_chan.freq_24;
3199                 wpa_s->best_5_freq = data->best_chan.freq_5;
3200                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3201 #ifdef CONFIG_P2P
3202                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3203                                               data->best_chan.freq_5,
3204                                               data->best_chan.freq_overall);
3205 #endif /* CONFIG_P2P */
3206                 break;
3207         case EVENT_UNPROT_DEAUTH:
3208                 wpa_supplicant_event_unprot_deauth(wpa_s,
3209                                                    &data->unprot_deauth);
3210                 break;
3211         case EVENT_UNPROT_DISASSOC:
3212                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3213                                                      &data->unprot_disassoc);
3214                 break;
3215         case EVENT_STATION_LOW_ACK:
3216 #ifdef CONFIG_AP
3217                 if (wpa_s->ap_iface && data)
3218                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3219                                                   data->low_ack.addr);
3220 #endif /* CONFIG_AP */
3221 #ifdef CONFIG_TDLS
3222                 if (data)
3223                         wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
3224 #endif /* CONFIG_TDLS */
3225                 break;
3226         case EVENT_IBSS_PEER_LOST:
3227 #ifdef CONFIG_IBSS_RSN
3228                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3229 #endif /* CONFIG_IBSS_RSN */
3230                 break;
3231         case EVENT_DRIVER_GTK_REKEY:
3232                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3233                               wpa_s->bssid, ETH_ALEN))
3234                         break;
3235                 if (!wpa_s->wpa)
3236                         break;
3237                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3238                                          data->driver_gtk_rekey.replay_ctr);
3239                 break;
3240         case EVENT_SCHED_SCAN_STOPPED:
3241                 wpa_s->pno = 0;
3242                 wpa_s->sched_scanning = 0;
3243                 wpa_supplicant_notify_scanning(wpa_s, 0);
3244
3245                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3246                         break;
3247
3248                 /*
3249                  * Start a new sched scan to continue searching for more SSIDs
3250                  * either if timed out or PNO schedule scan is pending.
3251                  */
3252                 if (wpa_s->sched_scan_timed_out || wpa_s->pno_sched_pending) {
3253
3254                         if (wpa_supplicant_req_sched_scan(wpa_s) < 0 &&
3255                             wpa_s->pno_sched_pending) {
3256                                 wpa_msg(wpa_s, MSG_ERROR, "Failed to schedule PNO");
3257                         } else if (wpa_s->pno_sched_pending) {
3258                                 wpa_s->pno_sched_pending = 0;
3259                                 wpa_s->pno = 1;
3260                         }
3261                 }
3262
3263                 break;
3264         case EVENT_WPS_BUTTON_PUSHED:
3265 #ifdef CONFIG_WPS
3266                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3267 #endif /* CONFIG_WPS */
3268                 break;
3269         case EVENT_CONNECT_FAILED_REASON:
3270 #ifdef CONFIG_AP
3271                 if (!wpa_s->ap_iface || !data)
3272                         break;
3273                 hostapd_event_connect_failed_reason(
3274                         wpa_s->ap_iface->bss[0],
3275                         data->connect_failed_reason.addr,
3276                         data->connect_failed_reason.code);
3277 #endif /* CONFIG_AP */
3278                 break;
3279         default:
3280                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3281                 break;
3282         }
3283 }