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 struct wpa_bss * wpa_supplicant_get_new_bss(
  72         struct wpa_supplicant *wpa_s, const u8 *bssid)
  73 {
  74         struct wpa_bss *bss = NULL;
  75         struct wpa_ssid *ssid = wpa_s->current_ssid;
  76
  77         if (ssid->ssid_len > 0)
  78                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
  79         if (!bss)
  80                 bss = wpa_bss_get_bssid(wpa_s, bssid);
  81
  82         return bss;
  83 }
  84
  85
  86 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
  87 {
  88         struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
  89
  90         if (!bss) {
  91                 wpa_supplicant_update_scan_results(wpa_s);
  92
  93                 /* Get the BSS from the new scan results */
  94                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
  95         }
  96
  97         if (bss)
  98                 wpa_s->current_bss = bss;
  99 }
 100
 101
 102 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
 103 {
 104         struct wpa_ssid *ssid, *old_ssid;
 105         int res;
 106
 107         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
 108                 wpa_supplicant_update_current_bss(wpa_s);
 109                 return 0;
 110         }
 111
 112         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
 113                 "information");
 114         ssid = wpa_supplicant_get_ssid(wpa_s);
 115         if (ssid == NULL) {
 116                 wpa_msg(wpa_s, MSG_INFO,
 117                         "No network configuration found for the current AP");
 118                 return -1;
 119         }
 120
 121         if (wpas_network_disabled(wpa_s, ssid)) {
 122                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 123                 return -1;
 124         }
 125
 126         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 127             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 128                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 129                 return -1;
 130         }
 131
 132         res = wpas_temp_disabled(wpa_s, ssid);
 133         if (res > 0) {
 134                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 135                         "disabled for %d second(s)", res);
 136                 return -1;
 137         }
 138
 139         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 140                 "current AP");
 141         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 142                 u8 wpa_ie[80];
 143                 size_t wpa_ie_len = sizeof(wpa_ie);
 144                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 145                                               wpa_ie, &wpa_ie_len) < 0)
 146                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 147         } else {
 148                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 149         }
 150
 151         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 152                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 153         old_ssid = wpa_s->current_ssid;
 154         wpa_s->current_ssid = ssid;
 155
 156         wpa_supplicant_update_current_bss(wpa_s);
 157
 158         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 159         wpa_supplicant_initiate_eapol(wpa_s);
 160         if (old_ssid != wpa_s->current_ssid)
 161                 wpas_notify_network_changed(wpa_s);
 162
 163         return 0;
 164 }
 165
 166
 167 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 168 {
 169         struct wpa_supplicant *wpa_s = eloop_ctx;
 170
 171         if (wpa_s->countermeasures) {
 172                 wpa_s->countermeasures = 0;
 173                 wpa_drv_set_countermeasures(wpa_s, 0);
 174                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 175                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 176         }
 177 }
 178
 179
 180 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 181 {
 182         int bssid_changed;
 183
 184         wnm_bss_keep_alive_deinit(wpa_s);
 185
 186 #ifdef CONFIG_IBSS_RSN
 187         ibss_rsn_deinit(wpa_s->ibss_rsn);
 188         wpa_s->ibss_rsn = NULL;
 189 #endif /* CONFIG_IBSS_RSN */
 190
 191 #ifdef CONFIG_AP
 192         wpa_supplicant_ap_deinit(wpa_s);
 193 #endif /* CONFIG_AP */
 194
 195         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 196                 return;
 197
 198         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 199         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 200         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 201         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 202 #ifdef CONFIG_SME
 203         wpa_s->sme.prev_bssid_set = 0;
 204 #endif /* CONFIG_SME */
 205 #ifdef CONFIG_P2P
 206         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 207 #endif /* CONFIG_P2P */
 208         wpa_s->current_bss = NULL;
 209         wpa_s->assoc_freq = 0;
 210 #ifdef CONFIG_IEEE80211R
 211 #ifdef CONFIG_SME
 212         if (wpa_s->sme.ft_ies)
 213                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 214 #endif /* CONFIG_SME */
 215 #endif /* CONFIG_IEEE80211R */
 216
 217         if (bssid_changed)
 218                 wpas_notify_bssid_changed(wpa_s);
 219
 220         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 221         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 222         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 223                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 224         wpa_s->ap_ies_from_associnfo = 0;
 225         wpa_s->current_ssid = NULL;
 226         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 227         wpa_s->key_mgmt = 0;
 228 }
 229
 230
 231 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 232 {
 233         struct wpa_ie_data ie;
 234         int pmksa_set = -1;
 235         size_t i;
 236
 237         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 238             ie.pmkid == NULL)
 239                 return;
 240
 241         for (i = 0; i < ie.num_pmkid; i++) {
 242                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 243                                                     ie.pmkid + i * PMKID_LEN,
 244                                                     NULL, NULL, 0);
 245                 if (pmksa_set == 0) {
 246                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 247                         break;
 248                 }
 249         }
 250
 251         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 252                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 253 }
 254
 255
 256 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 257                                                  union wpa_event_data *data)
 258 {
 259         if (data == NULL) {
 260                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 261                         "event");
 262                 return;
 263         }
 264         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 265                 " index=%d preauth=%d",
 266                 MAC2STR(data->pmkid_candidate.bssid),
 267                 data->pmkid_candidate.index,
 268                 data->pmkid_candidate.preauth);
 269
 270         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 271                             data->pmkid_candidate.index,
 272                             data->pmkid_candidate.preauth);
 273 }
 274
 275
 276 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 277 {
 278         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 279             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 280                 return 0;
 281
 282 #ifdef IEEE8021X_EAPOL
 283         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 284             wpa_s->current_ssid &&
 285             !(wpa_s->current_ssid->eapol_flags &
 286               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 287                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 288                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 289                  * plaintext or static WEP keys). */
 290                 return 0;
 291         }
 292 #endif /* IEEE8021X_EAPOL */
 293
 294         return 1;
 295 }
 296
 297
 298 /**
 299  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 300  * @wpa_s: pointer to wpa_supplicant data
 301  * @ssid: Configuration data for the network
 302  * Returns: 0 on success, -1 on failure
 303  *
 304  * This function is called when starting authentication with a network that is
 305  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 306  */
 307 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 308                               struct wpa_ssid *ssid)
 309 {
 310 #ifdef IEEE8021X_EAPOL
 311 #ifdef PCSC_FUNCS
 312         int aka = 0, sim = 0;
 313
 314         if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
 315             wpa_s->scard != NULL || wpa_s->conf->external_sim)
 316                 return 0;
 317
 318         if (ssid == NULL || ssid->eap.eap_methods == NULL) {
 319                 sim = 1;
 320                 aka = 1;
 321         } else {
 322                 struct eap_method_type *eap = ssid->eap.eap_methods;
 323                 while (eap->vendor != EAP_VENDOR_IETF ||
 324                        eap->method != EAP_TYPE_NONE) {
 325                         if (eap->vendor == EAP_VENDOR_IETF) {
 326                                 if (eap->method == EAP_TYPE_SIM)
 327                                         sim = 1;
 328                                 else if (eap->method == EAP_TYPE_AKA ||
 329                                          eap->method == EAP_TYPE_AKA_PRIME)
 330                                         aka = 1;
 331                         }
 332                         eap++;
 333                 }
 334         }
 335
 336         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 337                 sim = 0;
 338         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 339             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 340             NULL)
 341                 aka = 0;
 342
 343         if (!sim && !aka) {
 344                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 345                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 346                         "enabled");
 347                 return 0;
 348         }
 349
 350         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 351                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 352
 353         wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
 354         if (wpa_s->scard == NULL) {
 355                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 356                         "(pcsc-lite)");
 357                 return -1;
 358         }
 359         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 360         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 361 #endif /* PCSC_FUNCS */
 362 #endif /* IEEE8021X_EAPOL */
 363
 364         return 0;
 365 }
 366
 367
 368 #ifndef CONFIG_NO_SCAN_PROCESSING
 369
 370 static int has_wep_key(struct wpa_ssid *ssid)
 371 {
 372         int i;
 373
 374         for (i = 0; i < NUM_WEP_KEYS; i++) {
 375                 if (ssid->wep_key_len[i])
 376                         return 1;
 377         }
 378
 379         return 0;
 380 }
 381
 382
 383 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 384                                         struct wpa_ssid *ssid)
 385 {
 386         int privacy = 0;
 387
 388         if (ssid->mixed_cell)
 389                 return 1;
 390
 391 #ifdef CONFIG_WPS
 392         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 393                 return 1;
 394 #endif /* CONFIG_WPS */
 395
 396         if (has_wep_key(ssid))
 397                 privacy = 1;
 398
 399 #ifdef IEEE8021X_EAPOL
 400         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 401             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 402                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 403                 privacy = 1;
 404 #endif /* IEEE8021X_EAPOL */
 405
 406         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 407                 privacy = 1;
 408
 409         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 410                 privacy = 1;
 411
 412         if (bss->caps & IEEE80211_CAP_PRIVACY)
 413                 return privacy;
 414         return !privacy;
 415 }
 416
 417
 418 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 419                                          struct wpa_ssid *ssid,
 420                                          struct wpa_bss *bss)
 421 {
 422         struct wpa_ie_data ie;
 423         int proto_match = 0;
 424         const u8 *rsn_ie, *wpa_ie;
 425         int ret;
 426         int wep_ok;
 427
 428         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 429         if (ret >= 0)
 430                 return ret;
 431
 432         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 433         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 434                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 435                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 436                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 437
 438         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 439         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 440                 proto_match++;
 441
 442                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 443                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 444                                 "failed");
 445                         break;
 446                 }
 447
 448                 if (wep_ok &&
 449                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 450                 {
 451                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 452                                 "in RSN IE");
 453                         return 1;
 454                 }
 455
 456                 if (!(ie.proto & ssid->proto)) {
 457                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 458                                 "mismatch");
 459                         break;
 460                 }
 461
 462                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 463                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 464                                 "cipher mismatch");
 465                         break;
 466                 }
 467
 468                 if (!(ie.group_cipher & ssid->group_cipher)) {
 469                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 470                                 "cipher mismatch");
 471                         break;
 472                 }
 473
 474                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 475                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 476                                 "mismatch");
 477                         break;
 478                 }
 479
 480 #ifdef CONFIG_IEEE80211W
 481                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 482                     (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
 483                      wpa_s->conf->pmf : ssid->ieee80211w) ==
 484                     MGMT_FRAME_PROTECTION_REQUIRED) {
 485                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 486                                 "frame protection");
 487                         break;
 488                 }
 489 #endif /* CONFIG_IEEE80211W */
 490
 491                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 492                 return 1;
 493         }
 494
 495         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 496         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 497                 proto_match++;
 498
 499                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 500                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 501                                 "failed");
 502                         break;
 503                 }
 504
 505                 if (wep_ok &&
 506                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 507                 {
 508                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 509                                 "in WPA IE");
 510                         return 1;
 511                 }
 512
 513                 if (!(ie.proto & ssid->proto)) {
 514                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 515                                 "mismatch");
 516                         break;
 517                 }
 518
 519                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 520                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 521                                 "cipher mismatch");
 522                         break;
 523                 }
 524
 525                 if (!(ie.group_cipher & ssid->group_cipher)) {
 526                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 527                                 "cipher mismatch");
 528                         break;
 529                 }
 530
 531                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 532                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 533                                 "mismatch");
 534                         break;
 535                 }
 536
 537                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 538                 return 1;
 539         }
 540
 541         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 542             !rsn_ie) {
 543                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 544                 return 1;
 545         }
 546
 547         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 548             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 549                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 550                 return 0;
 551         }
 552
 553         if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
 554             wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
 555                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
 556                 return 1;
 557         }
 558
 559         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 560                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 561                 return 1;
 562         }
 563
 564         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 565                 "WPA/WPA2");
 566
 567         return 0;
 568 }
 569
 570
 571 static int freq_allowed(int *freqs, int freq)
 572 {
 573         int i;
 574
 575         if (freqs == NULL)
 576                 return 1;
 577
 578         for (i = 0; freqs[i]; i++)
 579                 if (freqs[i] == freq)
 580                         return 1;
 581         return 0;
 582 }
 583
 584
 585 int ht_supported(const struct hostapd_hw_modes *mode)
 586 {
 587         if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
 588                 /*
 589                  * The driver did not indicate whether it supports HT. Assume
 590                  * it does to avoid connection issues.
 591                  */
 592                 return 1;
 593         }
 594
 595         /*
 596          * IEEE Std 802.11n-2009 20.1.1:
 597          * An HT non-AP STA shall support all EQM rates for one spatial stream.
 598          */
 599         return mode->mcs_set[0] == 0xff;
 600 }
 601
 602
 603 int vht_supported(const struct hostapd_hw_modes *mode)
 604 {
 605         if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) {
 606                 /*
 607                  * The driver did not indicate whether it supports VHT. Assume
 608                  * it does to avoid connection issues.
 609                  */
 610                 return 1;
 611         }
 612
 613         /*
 614          * A VHT non-AP STA shall support MCS 0-7 for one spatial stream.
 615          * TODO: Verify if this complies with the standard
 616          */
 617         return (mode->vht_mcs_set[0] & 0x3) != 3;
 618 }
 619
 620
 621 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 622 {
 623         const struct hostapd_hw_modes *mode = NULL, *modes;
 624         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 625         const u8 *rate_ie;
 626         int i, j, k;
 627
 628         if (bss->freq == 0)
 629                 return 1; /* Cannot do matching without knowing band */
 630
 631         modes = wpa_s->hw.modes;
 632         if (modes == NULL) {
 633                 /*
 634                  * The driver does not provide any additional information
 635                  * about the utilized hardware, so allow the connection attempt
 636                  * to continue.
 637                  */
 638                 return 1;
 639         }
 640
 641         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 642                 for (j = 0; j < modes[i].num_channels; j++) {
 643                         int freq = modes[i].channels[j].freq;
 644                         if (freq == bss->freq) {
 645                                 if (mode &&
 646                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 647                                         break; /* do not allow 802.11b replace
 648                                                 * 802.11g */
 649                                 mode = &modes[i];
 650                                 break;
 651                         }
 652                 }
 653         }
 654
 655         if (mode == NULL)
 656                 return 0;
 657
 658         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 659                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 660                 if (rate_ie == NULL)
 661                         continue;
 662
 663                 for (j = 2; j < rate_ie[1] + 2; j++) {
 664                         int flagged = !!(rate_ie[j] & 0x80);
 665                         int r = (rate_ie[j] & 0x7f) * 5;
 666
 667                         /*
 668                          * IEEE Std 802.11n-2009 7.3.2.2:
 669                          * The new BSS Membership selector value is encoded
 670                          * like a legacy basic rate, but it is not a rate and
 671                          * only indicates if the BSS members are required to
 672                          * support the mandatory features of Clause 20 [HT PHY]
 673                          * in order to join the BSS.
 674                          */
 675                         if (flagged && ((rate_ie[j] & 0x7f) ==
 676                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 677                                 if (!ht_supported(mode)) {
 678                                         wpa_dbg(wpa_s, MSG_DEBUG,
 679                                                 "   hardware does not support "
 680                                                 "HT PHY");
 681                                         return 0;
 682                                 }
 683                                 continue;
 684                         }
 685
 686                         /* There's also a VHT selector for 802.11ac */
 687                         if (flagged && ((rate_ie[j] & 0x7f) ==
 688                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 689                                 if (!vht_supported(mode)) {
 690                                         wpa_dbg(wpa_s, MSG_DEBUG,
 691                                                 "   hardware does not support "
 692                                                 "VHT PHY");
 693                                         return 0;
 694                                 }
 695                                 continue;
 696                         }
 697
 698                         if (!flagged)
 699                                 continue;
 700
 701                         /* check for legacy basic rates */
 702                         for (k = 0; k < mode->num_rates; k++) {
 703                                 if (mode->rates[k] == r)
 704                                         break;
 705                         }
 706                         if (k == mode->num_rates) {
 707                                 /*
 708                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 709                                  * order to join a BSS all required rates
 710                                  * have to be supported by the hardware.
 711                                  */
 712                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 713                                         "not support required rate %d.%d Mbps",
 714                                         r / 10, r % 10);
 715                                 return 0;
 716                         }
 717                 }
 718         }
 719
 720         return 1;
 721 }
 722
 723
 724 /*
 725  * Test whether BSS is in an ESS.
 726  * This is done differently in DMG (60 GHz) and non-DMG bands
 727  */
 728 static int bss_is_ess(struct wpa_bss *bss)
 729 {
 730         if (bss_is_dmg(bss)) {
 731                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 732                         IEEE80211_CAP_DMG_AP;
 733         }
 734
 735         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 736                 IEEE80211_CAP_ESS);
 737 }
 738
 739
 740 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 741                                             int i, struct wpa_bss *bss,
 742                                             struct wpa_ssid *group,
 743                                             int only_first_ssid)
 744 {
 745         u8 wpa_ie_len, rsn_ie_len;
 746         int wpa;
 747         struct wpa_blacklist *e;
 748         const u8 *ie;
 749         struct wpa_ssid *ssid;
 750         int osen;
 751
 752         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 753         wpa_ie_len = ie ? ie[1] : 0;
 754
 755         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 756         rsn_ie_len = ie ? ie[1] : 0;
 757
 758         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 759         osen = ie != NULL;
 760
 761         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 762                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
 763                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 764                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 765                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 766                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 767                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 768                 " p2p" : "",
 769                 osen ? " osen=1" : "");
 770
 771         e = wpa_blacklist_get(wpa_s, bss->bssid);
 772         if (e) {
 773                 int limit = 1;
 774                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 775                         /*
 776                          * When only a single network is enabled, we can
 777                          * trigger blacklisting on the first failure. This
 778                          * should not be done with multiple enabled networks to
 779                          * avoid getting forced to move into a worse ESS on
 780                          * single error if there are no other BSSes of the
 781                          * current ESS.
 782                          */
 783                         limit = 0;
 784                 }
 785                 if (e->count > limit) {
 786                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 787                                 "(count=%d limit=%d)", e->count, limit);
 788                         return NULL;
 789                 }
 790         }
 791
 792         if (bss->ssid_len == 0) {
 793                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 794                 return NULL;
 795         }
 796
 797         if (disallowed_bssid(wpa_s, bss->bssid)) {
 798                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 799                 return NULL;
 800         }
 801
 802         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 803                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 804                 return NULL;
 805         }
 806
 807         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 808
 809         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 810                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 811                 int res;
 812
 813                 if (wpas_network_disabled(wpa_s, ssid)) {
 814                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 815                         continue;
 816                 }
 817
 818                 res = wpas_temp_disabled(wpa_s, ssid);
 819                 if (res > 0) {
 820                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 821                                 "temporarily for %d second(s)", res);
 822                         continue;
 823                 }
 824
 825 #ifdef CONFIG_WPS
 826                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 827                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 828                                 "(WPS)");
 829                         continue;
 830                 }
 831
 832                 if (wpa && ssid->ssid_len == 0 &&
 833                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 834                         check_ssid = 0;
 835
 836                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 837                         /* Only allow wildcard SSID match if an AP
 838                          * advertises active WPS operation that matches
 839                          * with our mode. */
 840                         check_ssid = 1;
 841                         if (ssid->ssid_len == 0 &&
 842                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 843                                 check_ssid = 0;
 844                 }
 845 #endif /* CONFIG_WPS */
 846
 847                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 848                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 849                         check_ssid = 0;
 850
 851                 if (check_ssid &&
 852                     (bss->ssid_len != ssid->ssid_len ||
 853                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 854                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 855                         continue;
 856                 }
 857
 858                 if (ssid->bssid_set &&
 859                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 860                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 861                         continue;
 862                 }
 863
 864                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 865                         continue;
 866
 867                 if (!osen && !wpa &&
 868                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 869                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 870                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 871                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 872                                 "not allowed");
 873                         continue;
 874                 }
 875
 876                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 877                     has_wep_key(ssid)) {
 878                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 879                         continue;
 880                 }
 881
 882                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
 883                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
 884                                 "not allowed");
 885                         continue;
 886                 }
 887
 888                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 889                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 890                                 "mismatch");
 891                         continue;
 892                 }
 893
 894                 if (!bss_is_ess(bss)) {
 895                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 896                         continue;
 897                 }
 898
 899                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 900                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 901                                 "allowed");
 902                         continue;
 903                 }
 904
 905                 if (!rate_match(wpa_s, bss)) {
 906                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 907                                 "not match");
 908                         continue;
 909                 }
 910
 911 #ifdef CONFIG_P2P
 912                 if (ssid->p2p_group &&
 913                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 914                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 915                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
 916                         continue;
 917                 }
 918
 919                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
 920                         struct wpabuf *p2p_ie;
 921                         u8 dev_addr[ETH_ALEN];
 922
 923                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
 924                         if (ie == NULL) {
 925                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
 926                                 continue;
 927                         }
 928                         p2p_ie = wpa_bss_get_vendor_ie_multi(
 929                                 bss, P2P_IE_VENDOR_TYPE);
 930                         if (p2p_ie == NULL) {
 931                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
 932                                 continue;
 933                         }
 934
 935                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
 936                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
 937                                          ETH_ALEN) != 0) {
 938                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
 939                                 wpabuf_free(p2p_ie);
 940                                 continue;
 941                         }
 942                         wpabuf_free(p2p_ie);
 943                 }
 944
 945                 /*
 946                  * TODO: skip the AP if its P2P IE has Group Formation
 947                  * bit set in the P2P Group Capability Bitmap and we
 948                  * are not in Group Formation with that device.
 949                  */
 950 #endif /* CONFIG_P2P */
 951
 952                 /* Matching configuration found */
 953                 return ssid;
 954         }
 955
 956         /* No matching configuration found */
 957         return NULL;
 958 }
 959
 960
 961 static struct wpa_bss *
 962 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 963                           struct wpa_ssid *group,
 964                           struct wpa_ssid **selected_ssid,
 965                           int only_first_ssid)
 966 {
 967         unsigned int i;
 968
 969         if (only_first_ssid)
 970                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
 971                         group->id);
 972         else
 973                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 974                         group->priority);
 975
 976         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 977                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 978                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
 979                                                     only_first_ssid);
 980                 if (!*selected_ssid)
 981                         continue;
 982                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 983                         " ssid='%s'",
 984                         MAC2STR(bss->bssid),
 985                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
 986                 return bss;
 987         }
 988
 989         return NULL;
 990 }
 991
 992
 993 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 994                                              struct wpa_ssid **selected_ssid)
 995 {
 996         struct wpa_bss *selected = NULL;
 997         int prio;
 998         struct wpa_ssid *next_ssid = NULL;
 999
1000         if (wpa_s->last_scan_res == NULL ||
1001             wpa_s->last_scan_res_used == 0)
1002                 return NULL; /* no scan results from last update */
1003
1004         if (wpa_s->next_ssid) {
1005                 struct wpa_ssid *ssid;
1006
1007                 /* check that next_ssid is still valid */
1008                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1009                         if (ssid == wpa_s->next_ssid)
1010                                 break;
1011                 }
1012                 next_ssid = ssid;
1013                 wpa_s->next_ssid = NULL;
1014         }
1015
1016         while (selected == NULL) {
1017                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1018                         if (next_ssid && next_ssid->priority ==
1019                             wpa_s->conf->pssid[prio]->priority) {
1020                                 selected = wpa_supplicant_select_bss(
1021                                         wpa_s, next_ssid, selected_ssid, 1);
1022                                 if (selected)
1023                                         break;
1024                         }
1025                         selected = wpa_supplicant_select_bss(
1026                                 wpa_s, wpa_s->conf->pssid[prio],
1027                                 selected_ssid, 0);
1028                         if (selected)
1029                                 break;
1030                 }
1031
1032                 if (selected == NULL && wpa_s->blacklist &&
1033                     !wpa_s->countermeasures) {
1034                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1035                                 "blacklist and try again");
1036                         wpa_blacklist_clear(wpa_s);
1037                         wpa_s->blacklist_cleared++;
1038                 } else if (selected == NULL)
1039                         break;
1040         }
1041
1042         return selected;
1043 }
1044
1045
1046 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1047                                         int timeout_sec, int timeout_usec)
1048 {
1049         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1050                 /*
1051                  * No networks are enabled; short-circuit request so
1052                  * we don't wait timeout seconds before transitioning
1053                  * to INACTIVE state.
1054                  */
1055                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1056                         "since there are no enabled networks");
1057                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1058                 return;
1059         }
1060
1061         wpa_s->scan_for_connection = 1;
1062         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1063 }
1064
1065
1066 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1067                            struct wpa_bss *selected,
1068                            struct wpa_ssid *ssid)
1069 {
1070         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1071                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1072                         "PBC session overlap");
1073 #ifdef CONFIG_P2P
1074                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1075                     wpa_s->p2p_in_provisioning) {
1076                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1077                                                wpa_s, NULL);
1078                         return -1;
1079                 }
1080 #endif /* CONFIG_P2P */
1081
1082 #ifdef CONFIG_WPS
1083                 wpas_wps_cancel(wpa_s);
1084 #endif /* CONFIG_WPS */
1085                 return -1;
1086         }
1087
1088         wpa_msg(wpa_s, MSG_DEBUG,
1089                 "Considering connect request: reassociate: %d  selected: "
1090                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1091                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1092                 wpa_s->reassociate, MAC2STR(selected->bssid),
1093                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1094                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1095                 ssid, wpa_s->current_ssid);
1096
1097         /*
1098          * Do not trigger new association unless the BSSID has changed or if
1099          * reassociation is requested. If we are in process of associating with
1100          * the selected BSSID, do not trigger new attempt.
1101          */
1102         if (wpa_s->reassociate ||
1103             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1104              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1105                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1106               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1107                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1108                0) ||
1109               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1110                ssid != wpa_s->current_ssid)))) {
1111                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1112                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1113                         return 0;
1114                 }
1115                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1116                         MAC2STR(selected->bssid));
1117                 wpa_supplicant_associate(wpa_s, selected, ssid);
1118         } else {
1119                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1120                         "connect with the selected AP");
1121         }
1122
1123         return 0;
1124 }
1125
1126
1127 static struct wpa_ssid *
1128 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1129 {
1130         int prio;
1131         struct wpa_ssid *ssid;
1132
1133         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1134                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1135                 {
1136                         if (wpas_network_disabled(wpa_s, ssid))
1137                                 continue;
1138                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1139                             ssid->mode == IEEE80211_MODE_AP)
1140                                 return ssid;
1141                 }
1142         }
1143         return NULL;
1144 }
1145
1146
1147 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1148  * on BSS added and BSS changed events */
1149 static void wpa_supplicant_rsn_preauth_scan_results(
1150         struct wpa_supplicant *wpa_s)
1151 {
1152         struct wpa_bss *bss;
1153
1154         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1155                 return;
1156
1157         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1158                 const u8 *ssid, *rsn;
1159
1160                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1161                 if (ssid == NULL)
1162                         continue;
1163
1164                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1165                 if (rsn == NULL)
1166                         continue;
1167
1168                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1169         }
1170
1171 }
1172
1173
1174 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1175                                        struct wpa_bss *selected,
1176                                        struct wpa_ssid *ssid)
1177 {
1178         struct wpa_bss *current_bss = NULL;
1179         int min_diff;
1180
1181         if (wpa_s->reassociate)
1182                 return 1; /* explicit request to reassociate */
1183         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1184                 return 1; /* we are not associated; continue */
1185         if (wpa_s->current_ssid == NULL)
1186                 return 1; /* unknown current SSID */
1187         if (wpa_s->current_ssid != ssid)
1188                 return 1; /* different network block */
1189
1190         if (wpas_driver_bss_selection(wpa_s))
1191                 return 0; /* Driver-based roaming */
1192
1193         if (wpa_s->current_ssid->ssid)
1194                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1195                                           wpa_s->current_ssid->ssid,
1196                                           wpa_s->current_ssid->ssid_len);
1197         if (!current_bss)
1198                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1199
1200         if (!current_bss)
1201                 return 1; /* current BSS not seen in scan results */
1202
1203         if (current_bss == selected)
1204                 return 0;
1205
1206         if (selected->last_update_idx > current_bss->last_update_idx)
1207                 return 1; /* current BSS not seen in the last scan */
1208
1209 #ifndef CONFIG_NO_ROAMING
1210         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1211         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1212                 MAC2STR(current_bss->bssid), current_bss->level);
1213         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1214                 MAC2STR(selected->bssid), selected->level);
1215
1216         if (wpa_s->current_ssid->bssid_set &&
1217             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1218             0) {
1219                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1220                         "has preferred BSSID");
1221                 return 1;
1222         }
1223
1224         if (current_bss->level < 0 && current_bss->level > selected->level) {
1225                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1226                         "signal level");
1227                 return 0;
1228         }
1229
1230         min_diff = 2;
1231         if (current_bss->level < 0) {
1232                 if (current_bss->level < -85)
1233                         min_diff = 1;
1234                 else if (current_bss->level < -80)
1235                         min_diff = 2;
1236                 else if (current_bss->level < -75)
1237                         min_diff = 3;
1238                 else if (current_bss->level < -70)
1239                         min_diff = 4;
1240                 else
1241                         min_diff = 5;
1242         }
1243         if (abs(current_bss->level - selected->level) < min_diff) {
1244                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1245                         "in signal level");
1246                 return 0;
1247         }
1248
1249         return 1;
1250 #else /* CONFIG_NO_ROAMING */
1251         return 0;
1252 #endif /* CONFIG_NO_ROAMING */
1253 }
1254
1255
1256 /* Return != 0 if no scan results could be fetched or if scan results should not
1257  * be shared with other virtual interfaces. */
1258 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1259                                               union wpa_event_data *data,
1260                                               int own_request)
1261 {
1262         struct wpa_scan_results *scan_res = NULL;
1263         int ret = 0;
1264         int ap = 0;
1265 #ifndef CONFIG_NO_RANDOM_POOL
1266         size_t i, num;
1267 #endif /* CONFIG_NO_RANDOM_POOL */
1268
1269 #ifdef CONFIG_AP
1270         if (wpa_s->ap_iface)
1271                 ap = 1;
1272 #endif /* CONFIG_AP */
1273
1274         wpa_supplicant_notify_scanning(wpa_s, 0);
1275
1276         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1277                                                    data ? &data->scan_info :
1278                                                    NULL, 1);
1279         if (scan_res == NULL) {
1280                 if (wpa_s->conf->ap_scan == 2 || ap ||
1281                     wpa_s->scan_res_handler == scan_only_handler)
1282                         return -1;
1283                 if (!own_request)
1284                         return -1;
1285                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1286                         "scanning again");
1287                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1288                 ret = -1;
1289                 goto scan_work_done;
1290         }
1291
1292 #ifndef CONFIG_NO_RANDOM_POOL
1293         num = scan_res->num;
1294         if (num > 10)
1295                 num = 10;
1296         for (i = 0; i < num; i++) {
1297                 u8 buf[5];
1298                 struct wpa_scan_res *res = scan_res->res[i];
1299                 buf[0] = res->bssid[5];
1300                 buf[1] = res->qual & 0xff;
1301                 buf[2] = res->noise & 0xff;
1302                 buf[3] = res->level & 0xff;
1303                 buf[4] = res->tsf & 0xff;
1304                 random_add_randomness(buf, sizeof(buf));
1305         }
1306 #endif /* CONFIG_NO_RANDOM_POOL */
1307
1308         if (own_request && wpa_s->scan_res_handler &&
1309             (wpa_s->own_scan_running || !wpa_s->external_scan_running)) {
1310                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1311                                          struct wpa_scan_results *scan_res);
1312
1313                 scan_res_handler = wpa_s->scan_res_handler;
1314                 wpa_s->scan_res_handler = NULL;
1315                 scan_res_handler(wpa_s, scan_res);
1316                 ret = -2;
1317                 goto scan_work_done;
1318         }
1319
1320         if (ap) {
1321                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1322 #ifdef CONFIG_AP
1323                 if (wpa_s->ap_iface->scan_cb)
1324                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1325 #endif /* CONFIG_AP */
1326                 goto scan_work_done;
1327         }
1328
1329         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1330                 wpa_s->own_scan_running, wpa_s->external_scan_running);
1331         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1332             wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1333                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1334                              wpa_s->manual_scan_id);
1335                 wpa_s->manual_scan_use_id = 0;
1336         } else {
1337                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1338         }
1339         wpas_notify_scan_results(wpa_s);
1340
1341         wpas_notify_scan_done(wpa_s, 1);
1342
1343         if (!wpa_s->own_scan_running && wpa_s->external_scan_running) {
1344                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1345                 wpa_scan_results_free(scan_res);
1346                 return 0;
1347         }
1348
1349         if (sme_proc_obss_scan(wpa_s) > 0)
1350                 goto scan_work_done;
1351
1352         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1353                 goto scan_work_done;
1354
1355         if (autoscan_notify_scan(wpa_s, scan_res))
1356                 goto scan_work_done;
1357
1358         if (wpa_s->disconnected) {
1359                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1360                 goto scan_work_done;
1361         }
1362
1363         if (!wpas_driver_bss_selection(wpa_s) &&
1364             bgscan_notify_scan(wpa_s, scan_res) == 1)
1365                 goto scan_work_done;
1366
1367         wpas_wps_update_ap_info(wpa_s, scan_res);
1368
1369         wpa_scan_results_free(scan_res);
1370
1371         if (wpa_s->scan_work) {
1372                 struct wpa_radio_work *work = wpa_s->scan_work;
1373                 wpa_s->scan_work = NULL;
1374                 radio_work_done(work);
1375         }
1376
1377         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1378
1379 scan_work_done:
1380         wpa_scan_results_free(scan_res);
1381         if (wpa_s->scan_work) {
1382                 struct wpa_radio_work *work = wpa_s->scan_work;
1383                 wpa_s->scan_work = NULL;
1384                 radio_work_done(work);
1385         }
1386         return ret;
1387 }
1388
1389
1390 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1391                                               int new_scan, int own_request)
1392 {
1393         struct wpa_bss *selected;
1394         struct wpa_ssid *ssid = NULL;
1395
1396         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1397
1398         if (selected) {
1399                 int skip;
1400                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1401                 if (skip) {
1402                         if (new_scan)
1403                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1404                         return 0;
1405                 }
1406
1407                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1408                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1409                         return -1;
1410                 }
1411                 if (new_scan)
1412                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1413                 /*
1414                  * Do not notify other virtual radios of scan results since we do not
1415                  * want them to start other associations at the same time.
1416                  */
1417                 return 1;
1418         } else {
1419                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1420                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1421                 if (ssid) {
1422                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1423                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1424                         if (new_scan)
1425                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1426                 } else if (own_request) {
1427                         /*
1428                          * No SSID found. If SCAN results are as a result of
1429                          * own scan request and not due to a scan request on
1430                          * another shared interface, try another scan.
1431                          */
1432                         int timeout_sec = wpa_s->scan_interval;
1433                         int timeout_usec = 0;
1434 #ifdef CONFIG_P2P
1435                         if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1436                                 return 0;
1437
1438                         if (wpa_s->p2p_in_provisioning ||
1439                             wpa_s->show_group_started ||
1440                             wpa_s->p2p_in_invitation) {
1441                                 /*
1442                                  * Use shorter wait during P2P Provisioning
1443                                  * state and during P2P join-a-group operation
1444                                  * to speed up group formation.
1445                                  */
1446                                 timeout_sec = 0;
1447                                 timeout_usec = 250000;
1448                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1449                                                             timeout_usec);
1450                                 return 0;
1451                         }
1452 #endif /* CONFIG_P2P */
1453 #ifdef CONFIG_INTERWORKING
1454                         if (wpa_s->conf->auto_interworking &&
1455                             wpa_s->conf->interworking &&
1456                             wpa_s->conf->cred) {
1457                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1458                                         "start ANQP fetch since no matching "
1459                                         "networks found");
1460                                 wpa_s->network_select = 1;
1461                                 wpa_s->auto_network_select = 1;
1462                                 interworking_start_fetch_anqp(wpa_s);
1463                                 return 1;
1464                         }
1465 #endif /* CONFIG_INTERWORKING */
1466 #ifdef CONFIG_WPS
1467                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1468                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1469                                 timeout_sec = 0;
1470                                 timeout_usec = 500000;
1471                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1472                                                             timeout_usec);
1473                                 return 0;
1474                         }
1475 #endif /* CONFIG_WPS */
1476                         if (wpa_supplicant_req_sched_scan(wpa_s))
1477                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1478                                                             timeout_usec);
1479                 }
1480         }
1481         return 0;
1482 }
1483
1484
1485 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1486                                               union wpa_event_data *data)
1487 {
1488         struct wpa_supplicant *ifs;
1489
1490         if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
1491                 /*
1492                  * If no scan results could be fetched, then no need to
1493                  * notify those interfaces that did not actually request
1494                  * this scan. Similarly, if scan results started a new operation on this
1495                  * interface, do not notify other interfaces to avoid concurrent
1496                  * operations during a connection attempt.
1497                  */
1498                 return;
1499         }
1500
1501         /*
1502          * Check other interfaces to see if they share the same radio. If
1503          * so, they get updated with this same scan info.
1504          */
1505         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1506                          radio_list) {
1507                 if (ifs != wpa_s) {
1508                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1509                                    "sibling", ifs->ifname);
1510                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1511                 }
1512         }
1513 }
1514
1515 #endif /* CONFIG_NO_SCAN_PROCESSING */
1516
1517
1518 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1519 {
1520 #ifdef CONFIG_NO_SCAN_PROCESSING
1521         return -1;
1522 #else /* CONFIG_NO_SCAN_PROCESSING */
1523         struct os_reltime now;
1524
1525         if (wpa_s->last_scan_res_used <= 0)
1526                 return -1;
1527
1528         os_get_reltime(&now);
1529         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1530                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1531                 return -1;
1532         }
1533
1534         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1535 #endif /* CONFIG_NO_SCAN_PROCESSING */
1536 }
1537
1538 #ifdef CONFIG_WNM
1539
1540 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1541 {
1542         struct wpa_supplicant *wpa_s = eloop_ctx;
1543
1544         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1545                 return;
1546
1547         if (!wpa_s->no_keep_alive) {
1548                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1549                            MAC2STR(wpa_s->bssid));
1550                 /* TODO: could skip this if normal data traffic has been sent */
1551                 /* TODO: Consider using some more appropriate data frame for
1552                  * this */
1553                 if (wpa_s->l2)
1554                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1555                                        (u8 *) "", 0);
1556         }
1557
1558 #ifdef CONFIG_SME
1559         if (wpa_s->sme.bss_max_idle_period) {
1560                 unsigned int msec;
1561                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1562                 if (msec > 100)
1563                         msec -= 100;
1564                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1565                                        wnm_bss_keep_alive, wpa_s, NULL);
1566         }
1567 #endif /* CONFIG_SME */
1568 }
1569
1570
1571 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1572                                    const u8 *ies, size_t ies_len)
1573 {
1574         struct ieee802_11_elems elems;
1575
1576         if (ies == NULL)
1577                 return;
1578
1579         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1580                 return;
1581
1582 #ifdef CONFIG_SME
1583         if (elems.bss_max_idle_period) {
1584                 unsigned int msec;
1585                 wpa_s->sme.bss_max_idle_period =
1586                         WPA_GET_LE16(elems.bss_max_idle_period);
1587                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1588                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1589                            (elems.bss_max_idle_period[2] & 0x01) ?
1590                            " (protected keep-live required)" : "");
1591                 if (wpa_s->sme.bss_max_idle_period == 0)
1592                         wpa_s->sme.bss_max_idle_period = 1;
1593                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1594                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1595                          /* msec times 1000 */
1596                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1597                         if (msec > 100)
1598                                 msec -= 100;
1599                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1600                                                wnm_bss_keep_alive, wpa_s,
1601                                                NULL);
1602                 }
1603         }
1604 #endif /* CONFIG_SME */
1605 }
1606
1607 #endif /* CONFIG_WNM */
1608
1609
1610 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1611 {
1612 #ifdef CONFIG_WNM
1613         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1614 #endif /* CONFIG_WNM */
1615 }
1616
1617
1618 #ifdef CONFIG_INTERWORKING
1619
1620 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1621                             size_t len)
1622 {
1623         int res;
1624
1625         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1626         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1627         if (res) {
1628                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1629         }
1630
1631         return res;
1632 }
1633
1634
1635 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1636                                             const u8 *ies, size_t ies_len)
1637 {
1638         struct ieee802_11_elems elems;
1639
1640         if (ies == NULL)
1641                 return;
1642
1643         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1644                 return;
1645
1646         if (elems.qos_map_set) {
1647                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1648                                  elems.qos_map_set_len);
1649         }
1650 }
1651
1652 #endif /* CONFIG_INTERWORKING */
1653
1654
1655 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1656                                           union wpa_event_data *data)
1657 {
1658         int l, len, found = 0, wpa_found, rsn_found;
1659         const u8 *p;
1660 #ifdef CONFIG_IEEE80211R
1661         u8 bssid[ETH_ALEN];
1662 #endif /* CONFIG_IEEE80211R */
1663
1664         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1665         if (data->assoc_info.req_ies)
1666                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1667                             data->assoc_info.req_ies_len);
1668         if (data->assoc_info.resp_ies) {
1669                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1670                             data->assoc_info.resp_ies_len);
1671 #ifdef CONFIG_TDLS
1672                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1673                                         data->assoc_info.resp_ies_len);
1674 #endif /* CONFIG_TDLS */
1675 #ifdef CONFIG_WNM
1676                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1677                                        data->assoc_info.resp_ies_len);
1678 #endif /* CONFIG_WNM */
1679 #ifdef CONFIG_INTERWORKING
1680                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1681                                                 data->assoc_info.resp_ies_len);
1682 #endif /* CONFIG_INTERWORKING */
1683         }
1684         if (data->assoc_info.beacon_ies)
1685                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1686                             data->assoc_info.beacon_ies,
1687                             data->assoc_info.beacon_ies_len);
1688         if (data->assoc_info.freq)
1689                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1690                         data->assoc_info.freq);
1691
1692         p = data->assoc_info.req_ies;
1693         l = data->assoc_info.req_ies_len;
1694
1695         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1696         while (p && l >= 2) {
1697                 len = p[1] + 2;
1698                 if (len > l) {
1699                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1700                                     p, l);
1701                         break;
1702                 }
1703                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1704                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1705                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1706                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1707                                 break;
1708                         found = 1;
1709                         wpa_find_assoc_pmkid(wpa_s);
1710                         break;
1711                 }
1712                 l -= len;
1713                 p += len;
1714         }
1715         if (!found && data->assoc_info.req_ies)
1716                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1717
1718 #ifdef CONFIG_IEEE80211R
1719 #ifdef CONFIG_SME
1720         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1721                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1722                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1723                                                  data->assoc_info.resp_ies,
1724                                                  data->assoc_info.resp_ies_len,
1725                                                  bssid) < 0) {
1726                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1727                                 "Reassociation Response failed");
1728                         wpa_supplicant_deauthenticate(
1729                                 wpa_s, WLAN_REASON_INVALID_IE);
1730                         return -1;
1731                 }
1732         }
1733
1734         p = data->assoc_info.resp_ies;
1735         l = data->assoc_info.resp_ies_len;
1736
1737 #ifdef CONFIG_WPS_STRICT
1738         if (p && wpa_s->current_ssid &&
1739             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1740                 struct wpabuf *wps;
1741                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1742                 if (wps == NULL) {
1743                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1744                                 "include WPS IE in (Re)Association Response");
1745                         return -1;
1746                 }
1747
1748                 if (wps_validate_assoc_resp(wps) < 0) {
1749                         wpabuf_free(wps);
1750                         wpa_supplicant_deauthenticate(
1751                                 wpa_s, WLAN_REASON_INVALID_IE);
1752                         return -1;
1753                 }
1754                 wpabuf_free(wps);
1755         }
1756 #endif /* CONFIG_WPS_STRICT */
1757
1758         /* Go through the IEs and make a copy of the MDIE, if present. */
1759         while (p && l >= 2) {
1760                 len = p[1] + 2;
1761                 if (len > l) {
1762                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1763                                     p, l);
1764                         break;
1765                 }
1766                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1767                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1768                         wpa_s->sme.ft_used = 1;
1769                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1770                                   MOBILITY_DOMAIN_ID_LEN);
1771                         break;
1772                 }
1773                 l -= len;
1774                 p += len;
1775         }
1776 #endif /* CONFIG_SME */
1777
1778         /* Process FT when SME is in the driver */
1779         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1780             wpa_ft_is_completed(wpa_s->wpa)) {
1781                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1782                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1783                                                  data->assoc_info.resp_ies,
1784                                                  data->assoc_info.resp_ies_len,
1785                                                  bssid) < 0) {
1786                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1787                                 "Reassociation Response failed");
1788                         wpa_supplicant_deauthenticate(
1789                                 wpa_s, WLAN_REASON_INVALID_IE);
1790                         return -1;
1791                 }
1792                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1793         }
1794
1795         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1796                              data->assoc_info.resp_ies_len);
1797 #endif /* CONFIG_IEEE80211R */
1798
1799         /* WPA/RSN IE from Beacon/ProbeResp */
1800         p = data->assoc_info.beacon_ies;
1801         l = data->assoc_info.beacon_ies_len;
1802
1803         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1804          */
1805         wpa_found = rsn_found = 0;
1806         while (p && l >= 2) {
1807                 len = p[1] + 2;
1808                 if (len > l) {
1809                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1810                                     p, l);
1811                         break;
1812                 }
1813                 if (!wpa_found &&
1814                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1815                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1816                         wpa_found = 1;
1817                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1818                 }
1819
1820                 if (!rsn_found &&
1821                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1822                         rsn_found = 1;
1823                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1824                 }
1825
1826                 l -= len;
1827                 p += len;
1828         }
1829
1830         if (!wpa_found && data->assoc_info.beacon_ies)
1831                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1832         if (!rsn_found && data->assoc_info.beacon_ies)
1833                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1834         if (wpa_found || rsn_found)
1835                 wpa_s->ap_ies_from_associnfo = 1;
1836
1837         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1838             wpa_s->assoc_freq != data->assoc_info.freq) {
1839                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1840                            "%u to %u MHz",
1841                            wpa_s->assoc_freq, data->assoc_info.freq);
1842                 wpa_supplicant_update_scan_results(wpa_s);
1843         }
1844
1845         wpa_s->assoc_freq = data->assoc_info.freq;
1846
1847         return 0;
1848 }
1849
1850
1851 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1852 {
1853         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1854
1855         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1856                 return -1;
1857
1858         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1859                 return 0;
1860
1861         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1862                                         WPA_IE_VENDOR_TYPE);
1863         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1864
1865         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1866                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1867             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1868                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1869                 return -1;
1870
1871         return 0;
1872 }
1873
1874
1875 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1876                                        union wpa_event_data *data)
1877 {
1878         u8 bssid[ETH_ALEN];
1879         int ft_completed;
1880
1881 #ifdef CONFIG_AP
1882         if (wpa_s->ap_iface) {
1883                 if (!data)
1884                         return;
1885                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1886                                     data->assoc_info.addr,
1887                                     data->assoc_info.req_ies,
1888                                     data->assoc_info.req_ies_len,
1889                                     data->assoc_info.reassoc);
1890                 return;
1891         }
1892 #endif /* CONFIG_AP */
1893
1894         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1895         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1896                 return;
1897
1898         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1899                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1900                 wpa_supplicant_deauthenticate(
1901                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1902                 return;
1903         }
1904
1905         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1906         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1907                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1908                         MACSTR, MAC2STR(bssid));
1909                 random_add_randomness(bssid, ETH_ALEN);
1910                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1911                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1912                 wpas_notify_bssid_changed(wpa_s);
1913
1914                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1915                         wpa_clear_keys(wpa_s, bssid);
1916                 }
1917                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1918                         wpa_supplicant_deauthenticate(
1919                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1920                         return;
1921                 }
1922
1923                 if (wpa_s->conf->ap_scan == 1 &&
1924                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1925                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1926                                 wpa_msg(wpa_s, MSG_WARNING,
1927                                         "WPA/RSN IEs not updated");
1928                 }
1929         }
1930
1931 #ifdef CONFIG_SME
1932         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1933         wpa_s->sme.prev_bssid_set = 1;
1934         wpa_s->sme.last_unprot_disconnect.sec = 0;
1935 #endif /* CONFIG_SME */
1936
1937         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1938         if (wpa_s->current_ssid) {
1939                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1940                  * initialized before association, but for other modes,
1941                  * initialize PC/SC here, if the current configuration needs
1942                  * smartcard or SIM/USIM. */
1943                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1944         }
1945         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1946         if (wpa_s->l2)
1947                 l2_packet_notify_auth_start(wpa_s->l2);
1948
1949         /*
1950          * Set portEnabled first to FALSE in order to get EAP state machine out
1951          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1952          * state machine may transit to AUTHENTICATING state based on obsolete
1953          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1954          * AUTHENTICATED without ever giving chance to EAP state machine to
1955          * reset the state.
1956          */
1957         if (!ft_completed) {
1958                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1959                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1960         }
1961         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1962                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1963         /* 802.1X::portControl = Auto */
1964         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1965         wpa_s->eapol_received = 0;
1966         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1967             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1968             (wpa_s->current_ssid &&
1969              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1970                 if (wpa_s->current_ssid &&
1971                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
1972                     (wpa_s->drv_flags &
1973                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1974                         /*
1975                          * Set the key after having received joined-IBSS event
1976                          * from the driver.
1977                          */
1978                         wpa_supplicant_set_wpa_none_key(wpa_s,
1979                                                         wpa_s->current_ssid);
1980                 }
1981                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1982                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1983         } else if (!ft_completed) {
1984                 /* Timeout for receiving the first EAPOL packet */
1985                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1986         }
1987         wpa_supplicant_cancel_scan(wpa_s);
1988
1989         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1990             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1991                 /*
1992                  * We are done; the driver will take care of RSN 4-way
1993                  * handshake.
1994                  */
1995                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1996                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1997                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1998                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1999         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2000                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2001                 /*
2002                  * The driver will take care of RSN 4-way handshake, so we need
2003                  * to allow EAPOL supplicant to complete its work without
2004                  * waiting for WPA supplicant.
2005                  */
2006                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2007         } else if (ft_completed) {
2008                 /*
2009                  * FT protocol completed - make sure EAPOL state machine ends
2010                  * up in authenticated.
2011                  */
2012                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2013                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2014                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2015                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2016         }
2017
2018         wpa_s->last_eapol_matches_bssid = 0;
2019
2020         if (wpa_s->pending_eapol_rx) {
2021                 struct os_reltime now, age;
2022                 os_get_reltime(&now);
2023                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2024                 if (age.sec == 0 && age.usec < 100000 &&
2025                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2026                     0) {
2027                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2028                                 "frame that was received just before "
2029                                 "association notification");
2030                         wpa_supplicant_rx_eapol(
2031                                 wpa_s, wpa_s->pending_eapol_rx_src,
2032                                 wpabuf_head(wpa_s->pending_eapol_rx),
2033                                 wpabuf_len(wpa_s->pending_eapol_rx));
2034                 }
2035                 wpabuf_free(wpa_s->pending_eapol_rx);
2036                 wpa_s->pending_eapol_rx = NULL;
2037         }
2038
2039         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2040              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2041             wpa_s->current_ssid &&
2042             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2043                 /* Set static WEP keys again */
2044                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2045         }
2046
2047 #ifdef CONFIG_IBSS_RSN
2048         if (wpa_s->current_ssid &&
2049             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2050             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2051             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2052             wpa_s->ibss_rsn == NULL) {
2053                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2054                 if (!wpa_s->ibss_rsn) {
2055                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2056                         wpa_supplicant_deauthenticate(
2057                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2058                         return;
2059                 }
2060
2061                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2062         }
2063 #endif /* CONFIG_IBSS_RSN */
2064
2065         wpas_wps_notify_assoc(wpa_s, bssid);
2066 }
2067
2068
2069 static int disconnect_reason_recoverable(u16 reason_code)
2070 {
2071         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2072                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2073                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2074 }
2075
2076
2077 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2078                                           u16 reason_code,
2079                                           int locally_generated)
2080 {
2081         const u8 *bssid;
2082
2083         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2084                 /*
2085                  * At least Host AP driver and a Prism3 card seemed to be
2086                  * generating streams of disconnected events when configuring
2087                  * IBSS for WPA-None. Ignore them for now.
2088                  */
2089                 return;
2090         }
2091
2092         bssid = wpa_s->bssid;
2093         if (is_zero_ether_addr(bssid))
2094                 bssid = wpa_s->pending_bssid;
2095
2096         if (!is_zero_ether_addr(bssid) ||
2097             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2098                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2099                         " reason=%d%s",
2100                         MAC2STR(bssid), reason_code,
2101                         locally_generated ? " locally_generated=1" : "");
2102         }
2103 }
2104
2105
2106 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2107                                  int locally_generated)
2108 {
2109         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2110             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2111                 return 0; /* Not in 4-way handshake with PSK */
2112
2113         /*
2114          * It looks like connection was lost while trying to go through PSK
2115          * 4-way handshake. Filter out known disconnection cases that are caused
2116          * by something else than PSK mismatch to avoid confusing reports.
2117          */
2118
2119         if (locally_generated) {
2120                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2121                         return 0;
2122         }
2123
2124         return 1;
2125 }
2126
2127
2128 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2129                                                  u16 reason_code,
2130                                                  int locally_generated)
2131 {
2132         const u8 *bssid;
2133         int authenticating;
2134         u8 prev_pending_bssid[ETH_ALEN];
2135         struct wpa_bss *fast_reconnect = NULL;
2136         struct wpa_ssid *fast_reconnect_ssid = NULL;
2137         struct wpa_ssid *last_ssid;
2138
2139         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2140         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2141
2142         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2143                 /*
2144                  * At least Host AP driver and a Prism3 card seemed to be
2145                  * generating streams of disconnected events when configuring
2146                  * IBSS for WPA-None. Ignore them for now.
2147                  */
2148                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2149                         "IBSS/WPA-None mode");
2150                 return;
2151         }
2152
2153         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2154                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2155                         "pre-shared key may be incorrect");
2156                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2157                         return; /* P2P group removed */
2158                 wpas_auth_failed(wpa_s, "WRONG_KEY");
2159         }
2160         if (!wpa_s->disconnected &&
2161             (!wpa_s->auto_reconnect_disabled ||
2162              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2163              wpas_wps_searching(wpa_s))) {
2164                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2165                         "reconnect (wps=%d/%d wpa_state=%d)",
2166                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2167                         wpas_wps_searching(wpa_s),
2168                         wpa_s->wpa_state);
2169                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2170                     wpa_s->current_ssid &&
2171                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2172                     !locally_generated &&
2173                     disconnect_reason_recoverable(reason_code)) {
2174                         /*
2175                          * It looks like the AP has dropped association with
2176                          * us, but could allow us to get back in. Try to
2177                          * reconnect to the same BSS without full scan to save
2178                          * time for some common cases.
2179                          */
2180                         fast_reconnect = wpa_s->current_bss;
2181                         fast_reconnect_ssid = wpa_s->current_ssid;
2182                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2183                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2184                 else
2185                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2186                                 "immediate scan");
2187         } else {
2188                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2189                         "try to re-connect");
2190                 wpa_s->reassociate = 0;
2191                 wpa_s->disconnected = 1;
2192                 wpa_supplicant_cancel_sched_scan(wpa_s);
2193         }
2194         bssid = wpa_s->bssid;
2195         if (is_zero_ether_addr(bssid))
2196                 bssid = wpa_s->pending_bssid;
2197         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2198                 wpas_connection_failed(wpa_s, bssid);
2199         wpa_sm_notify_disassoc(wpa_s->wpa);
2200         if (locally_generated)
2201                 wpa_s->disconnect_reason = -reason_code;
2202         else
2203                 wpa_s->disconnect_reason = reason_code;
2204         wpas_notify_disconnect_reason(wpa_s);
2205         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2206                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2207                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2208         }
2209         last_ssid = wpa_s->current_ssid;
2210         wpa_supplicant_mark_disassoc(wpa_s);
2211
2212         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2213                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2214                 wpa_s->current_ssid = last_ssid;
2215         }
2216
2217         if (fast_reconnect &&
2218             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2219             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2220             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2221                              fast_reconnect->ssid_len) &&
2222             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2223 #ifndef CONFIG_NO_SCAN_PROCESSING
2224                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2225                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2226                                            fast_reconnect_ssid) < 0) {
2227                         /* Recover through full scan */
2228                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2229                 }
2230 #endif /* CONFIG_NO_SCAN_PROCESSING */
2231         } else if (fast_reconnect) {
2232                 /*
2233                  * Could not reconnect to the same BSS due to network being
2234                  * disabled. Use a new scan to match the alternative behavior
2235                  * above, i.e., to continue automatic reconnection attempt in a
2236                  * way that enforces disabled network rules.
2237                  */
2238                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2239         }
2240 }
2241
2242
2243 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2244 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2245 {
2246         struct wpa_supplicant *wpa_s = eloop_ctx;
2247
2248         if (!wpa_s->pending_mic_error_report)
2249                 return;
2250
2251         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2252         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2253         wpa_s->pending_mic_error_report = 0;
2254 }
2255 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2256
2257
2258 static void
2259 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2260                                          union wpa_event_data *data)
2261 {
2262         int pairwise;
2263         struct os_reltime t;
2264
2265         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2266         pairwise = (data && data->michael_mic_failure.unicast);
2267         os_get_reltime(&t);
2268         if ((wpa_s->last_michael_mic_error.sec &&
2269              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2270             wpa_s->pending_mic_error_report) {
2271                 if (wpa_s->pending_mic_error_report) {
2272                         /*
2273                          * Send the pending MIC error report immediately since
2274                          * we are going to start countermeasures and AP better
2275                          * do the same.
2276                          */
2277                         wpa_sm_key_request(wpa_s->wpa, 1,
2278                                            wpa_s->pending_mic_error_pairwise);
2279                 }
2280
2281                 /* Send the new MIC error report immediately since we are going
2282                  * to start countermeasures and AP better do the same.
2283                  */
2284                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2285
2286                 /* initialize countermeasures */
2287                 wpa_s->countermeasures = 1;
2288
2289                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2290
2291                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2292
2293                 /*
2294                  * Need to wait for completion of request frame. We do not get
2295                  * any callback for the message completion, so just wait a
2296                  * short while and hope for the best. */
2297                 os_sleep(0, 10000);
2298
2299                 wpa_drv_set_countermeasures(wpa_s, 1);
2300                 wpa_supplicant_deauthenticate(wpa_s,
2301                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2302                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2303                                      wpa_s, NULL);
2304                 eloop_register_timeout(60, 0,
2305                                        wpa_supplicant_stop_countermeasures,
2306                                        wpa_s, NULL);
2307                 /* TODO: mark the AP rejected for 60 second. STA is
2308                  * allowed to associate with another AP.. */
2309         } else {
2310 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2311                 if (wpa_s->mic_errors_seen) {
2312                         /*
2313                          * Reduce the effectiveness of Michael MIC error
2314                          * reports as a means for attacking against TKIP if
2315                          * more than one MIC failure is noticed with the same
2316                          * PTK. We delay the transmission of the reports by a
2317                          * random time between 0 and 60 seconds in order to
2318                          * force the attacker wait 60 seconds before getting
2319                          * the information on whether a frame resulted in a MIC
2320                          * failure.
2321                          */
2322                         u8 rval[4];
2323                         int sec;
2324
2325                         if (os_get_random(rval, sizeof(rval)) < 0)
2326                                 sec = os_random() % 60;
2327                         else
2328                                 sec = WPA_GET_BE32(rval) % 60;
2329                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2330                                 "report %d seconds", sec);
2331                         wpa_s->pending_mic_error_report = 1;
2332                         wpa_s->pending_mic_error_pairwise = pairwise;
2333                         eloop_cancel_timeout(
2334                                 wpa_supplicant_delayed_mic_error_report,
2335                                 wpa_s, NULL);
2336                         eloop_register_timeout(
2337                                 sec, os_random() % 1000000,
2338                                 wpa_supplicant_delayed_mic_error_report,
2339                                 wpa_s, NULL);
2340                 } else {
2341                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2342                 }
2343 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2344                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2345 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2346         }
2347         wpa_s->last_michael_mic_error = t;
2348         wpa_s->mic_errors_seen++;
2349 }
2350
2351
2352 #ifdef CONFIG_TERMINATE_ONLASTIF
2353 static int any_interfaces(struct wpa_supplicant *head)
2354 {
2355         struct wpa_supplicant *wpa_s;
2356
2357         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2358                 if (!wpa_s->interface_removed)
2359                         return 1;
2360         return 0;
2361 }
2362 #endif /* CONFIG_TERMINATE_ONLASTIF */
2363
2364
2365 static void
2366 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2367                                       union wpa_event_data *data)
2368 {
2369         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2370                 return;
2371
2372         switch (data->interface_status.ievent) {
2373         case EVENT_INTERFACE_ADDED:
2374                 if (!wpa_s->interface_removed)
2375                         break;
2376                 wpa_s->interface_removed = 0;
2377                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2378                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2379                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2380                                 "driver after interface was added");
2381                 }
2382                 break;
2383         case EVENT_INTERFACE_REMOVED:
2384                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2385                 wpa_s->interface_removed = 1;
2386                 wpa_supplicant_mark_disassoc(wpa_s);
2387                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2388                 l2_packet_deinit(wpa_s->l2);
2389                 wpa_s->l2 = NULL;
2390 #ifdef CONFIG_TERMINATE_ONLASTIF
2391                 /* check if last interface */
2392                 if (!any_interfaces(wpa_s->global->ifaces))
2393                         eloop_terminate();
2394 #endif /* CONFIG_TERMINATE_ONLASTIF */
2395                 break;
2396         }
2397 }
2398
2399
2400 #ifdef CONFIG_PEERKEY
2401 static void
2402 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2403                               union wpa_event_data *data)
2404 {
2405         if (data == NULL)
2406                 return;
2407         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2408 }
2409 #endif /* CONFIG_PEERKEY */
2410
2411
2412 #ifdef CONFIG_TDLS
2413 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2414                                       union wpa_event_data *data)
2415 {
2416         if (data == NULL)
2417                 return;
2418         switch (data->tdls.oper) {
2419         case TDLS_REQUEST_SETUP:
2420                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2421                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2422                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2423                 else
2424                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2425                 break;
2426         case TDLS_REQUEST_TEARDOWN:
2427                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2428                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2429                                                data->tdls.reason_code);
2430                 else
2431                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2432                                           data->tdls.peer);
2433                 break;
2434         }
2435 }
2436 #endif /* CONFIG_TDLS */
2437
2438
2439 #ifdef CONFIG_WNM
2440 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2441                                      union wpa_event_data *data)
2442 {
2443         if (data == NULL)
2444                 return;
2445         switch (data->wnm.oper) {
2446         case WNM_OPER_SLEEP:
2447                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2448                            "(action=%d, intval=%d)",
2449                            data->wnm.sleep_action, data->wnm.sleep_intval);
2450                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2451                                              data->wnm.sleep_intval, NULL);
2452                 break;
2453         }
2454 }
2455 #endif /* CONFIG_WNM */
2456
2457
2458 #ifdef CONFIG_IEEE80211R
2459 static void
2460 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2461                                  union wpa_event_data *data)
2462 {
2463         if (data == NULL)
2464                 return;
2465
2466         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2467                                     data->ft_ies.ies_len,
2468                                     data->ft_ies.ft_action,
2469                                     data->ft_ies.target_ap,
2470                                     data->ft_ies.ric_ies,
2471                                     data->ft_ies.ric_ies_len) < 0) {
2472                 /* TODO: prevent MLME/driver from trying to associate? */
2473         }
2474 }
2475 #endif /* CONFIG_IEEE80211R */
2476
2477
2478 #ifdef CONFIG_IBSS_RSN
2479 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2480                                                 union wpa_event_data *data)
2481 {
2482         struct wpa_ssid *ssid;
2483         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2484                 return;
2485         if (data == NULL)
2486                 return;
2487         ssid = wpa_s->current_ssid;
2488         if (ssid == NULL)
2489                 return;
2490         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2491                 return;
2492
2493         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2494 }
2495
2496
2497 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2498                                            union wpa_event_data *data)
2499 {
2500         struct wpa_ssid *ssid = wpa_s->current_ssid;
2501
2502         if (ssid == NULL)
2503                 return;
2504
2505         /* check if the ssid is correctly configured as IBSS/RSN */
2506         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2507                 return;
2508
2509         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2510                              data->rx_mgmt.frame_len);
2511 }
2512 #endif /* CONFIG_IBSS_RSN */
2513
2514
2515 #ifdef CONFIG_IEEE80211R
2516 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2517                          size_t len)
2518 {
2519         const u8 *sta_addr, *target_ap_addr;
2520         u16 status;
2521
2522         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2523         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2524                 return; /* only SME case supported for now */
2525         if (len < 1 + 2 * ETH_ALEN + 2)
2526                 return;
2527         if (data[0] != 2)
2528                 return; /* Only FT Action Response is supported for now */
2529         sta_addr = data + 1;
2530         target_ap_addr = data + 1 + ETH_ALEN;
2531         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2532         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2533                 MACSTR " TargetAP " MACSTR " status %u",
2534                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2535
2536         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2537                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2538                         " in FT Action Response", MAC2STR(sta_addr));
2539                 return;
2540         }
2541
2542         if (status) {
2543                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2544                         "failure (status code %d)", status);
2545                 /* TODO: report error to FT code(?) */
2546                 return;
2547         }
2548
2549         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2550                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2551                                     target_ap_addr, NULL, 0) < 0)
2552                 return;
2553
2554 #ifdef CONFIG_SME
2555         {
2556                 struct wpa_bss *bss;
2557                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2558                 if (bss)
2559                         wpa_s->sme.freq = bss->freq;
2560                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2561                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2562                               WLAN_AUTH_FT);
2563         }
2564 #endif /* CONFIG_SME */
2565 }
2566 #endif /* CONFIG_IEEE80211R */
2567
2568
2569 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2570                                                struct unprot_deauth *e)
2571 {
2572 #ifdef CONFIG_IEEE80211W
2573         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2574                    "dropped: " MACSTR " -> " MACSTR
2575                    " (reason code %u)",
2576                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2577         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2578 #endif /* CONFIG_IEEE80211W */
2579 }
2580
2581
2582 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2583                                                  struct unprot_disassoc *e)
2584 {
2585 #ifdef CONFIG_IEEE80211W
2586         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2587                    "dropped: " MACSTR " -> " MACSTR
2588                    " (reason code %u)",
2589                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2590         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2591 #endif /* CONFIG_IEEE80211W */
2592 }
2593
2594
2595 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2596                                   u16 reason_code, int locally_generated,
2597                                   const u8 *ie, size_t ie_len, int deauth)
2598 {
2599 #ifdef CONFIG_AP
2600         if (wpa_s->ap_iface && addr) {
2601                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2602                 return;
2603         }
2604
2605         if (wpa_s->ap_iface) {
2606                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2607                 return;
2608         }
2609 #endif /* CONFIG_AP */
2610
2611         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2612
2613         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2614               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2615                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2616                eapol_sm_failed(wpa_s->eapol))) &&
2617              !wpa_s->eap_expected_failure))
2618                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2619
2620 #ifdef CONFIG_P2P
2621         if (deauth && reason_code > 0) {
2622                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2623                                           locally_generated) > 0) {
2624                         /*
2625                          * The interface was removed, so cannot continue
2626                          * processing any additional operations after this.
2627                          */
2628                         return;
2629                 }
2630         }
2631 #endif /* CONFIG_P2P */
2632
2633         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2634                                              locally_generated);
2635 }
2636
2637
2638 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2639                                 struct disassoc_info *info)
2640 {
2641         u16 reason_code = 0;
2642         int locally_generated = 0;
2643         const u8 *addr = NULL;
2644         const u8 *ie = NULL;
2645         size_t ie_len = 0;
2646
2647         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2648
2649         if (info) {
2650                 addr = info->addr;
2651                 ie = info->ie;
2652                 ie_len = info->ie_len;
2653                 reason_code = info->reason_code;
2654                 locally_generated = info->locally_generated;
2655                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2656                         locally_generated ? " (locally generated)" : "");
2657                 if (addr)
2658                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2659                                 MAC2STR(addr));
2660                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2661                             ie, ie_len);
2662         }
2663
2664 #ifdef CONFIG_AP
2665         if (wpa_s->ap_iface && info && info->addr) {
2666                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2667                 return;
2668         }
2669
2670         if (wpa_s->ap_iface) {
2671                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2672                 return;
2673         }
2674 #endif /* CONFIG_AP */
2675
2676 #ifdef CONFIG_P2P
2677         if (info) {
2678                 wpas_p2p_disassoc_notif(
2679                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2680                         locally_generated);
2681         }
2682 #endif /* CONFIG_P2P */
2683
2684         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2685                 sme_event_disassoc(wpa_s, info);
2686
2687         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2688                               ie, ie_len, 0);
2689 }
2690
2691
2692 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2693                               struct deauth_info *info)
2694 {
2695         u16 reason_code = 0;
2696         int locally_generated = 0;
2697         const u8 *addr = NULL;
2698         const u8 *ie = NULL;
2699         size_t ie_len = 0;
2700
2701         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2702
2703         if (info) {
2704                 addr = info->addr;
2705                 ie = info->ie;
2706                 ie_len = info->ie_len;
2707                 reason_code = info->reason_code;
2708                 locally_generated = info->locally_generated;
2709                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2710                         reason_code,
2711                         locally_generated ? " (locally generated)" : "");
2712                 if (addr) {
2713                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2714                                 MAC2STR(addr));
2715                 }
2716                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2717                             ie, ie_len);
2718         }
2719
2720         wpa_reset_ft_completed(wpa_s->wpa);
2721
2722         wpas_event_disconnect(wpa_s, addr, reason_code,
2723                               locally_generated, ie, ie_len, 1);
2724 }
2725
2726
2727 static const char * reg_init_str(enum reg_change_initiator init)
2728 {
2729         switch (init) {
2730         case REGDOM_SET_BY_CORE:
2731                 return "CORE";
2732         case REGDOM_SET_BY_USER:
2733                 return "USER";
2734         case REGDOM_SET_BY_DRIVER:
2735                 return "DRIVER";
2736         case REGDOM_SET_BY_COUNTRY_IE:
2737                 return "COUNTRY_IE";
2738         case REGDOM_BEACON_HINT:
2739                 return "BEACON_HINT";
2740         }
2741         return "?";
2742 }
2743
2744
2745 static const char * reg_type_str(enum reg_type type)
2746 {
2747         switch (type) {
2748         case REGDOM_TYPE_UNKNOWN:
2749                 return "UNKNOWN";
2750         case REGDOM_TYPE_COUNTRY:
2751                 return "COUNTRY";
2752         case REGDOM_TYPE_WORLD:
2753                 return "WORLD";
2754         case REGDOM_TYPE_CUSTOM_WORLD:
2755                 return "CUSTOM_WORLD";
2756         case REGDOM_TYPE_INTERSECTION:
2757                 return "INTERSECTION";
2758         }
2759         return "?";
2760 }
2761
2762
2763 static void wpa_supplicant_update_channel_list(
2764         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
2765 {
2766         struct wpa_supplicant *ifs;
2767
2768         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
2769                 reg_init_str(info->initiator), reg_type_str(info->type),
2770                 info->alpha2[0] ? " alpha2=" : "",
2771                 info->alpha2[0] ? info->alpha2 : "");
2772
2773         if (wpa_s->drv_priv == NULL)
2774                 return; /* Ignore event during drv initialization */
2775
2776         free_hw_features(wpa_s);
2777         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2778                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2779
2780         wpas_p2p_update_channel_list(wpa_s);
2781
2782         /*
2783          * Check other interfaces to see if they share the same radio. If
2784          * so, they get updated with this same hw mode info.
2785          */
2786         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2787                          radio_list) {
2788                 if (ifs != wpa_s) {
2789                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2790                                    ifs->ifname);
2791                         free_hw_features(ifs);
2792                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2793                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2794                 }
2795         }
2796 }
2797
2798
2799 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2800                                       const u8 *frame, size_t len, int freq)
2801 {
2802         const struct ieee80211_mgmt *mgmt;
2803         const u8 *payload;
2804         size_t plen;
2805         u8 category;
2806
2807         if (len < IEEE80211_HDRLEN + 2)
2808                 return;
2809
2810         mgmt = (const struct ieee80211_mgmt *) frame;
2811         payload = frame + IEEE80211_HDRLEN;
2812         category = *payload++;
2813         plen = len - IEEE80211_HDRLEN - 1;
2814
2815         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2816                 " Category=%u DataLen=%d freq=%d MHz",
2817                 MAC2STR(mgmt->sa), category, (int) plen, freq);
2818
2819 #ifdef CONFIG_IEEE80211R
2820         if (category == WLAN_ACTION_FT) {
2821                 ft_rx_action(wpa_s, payload, plen);
2822                 return;
2823         }
2824 #endif /* CONFIG_IEEE80211R */
2825
2826 #ifdef CONFIG_IEEE80211W
2827 #ifdef CONFIG_SME
2828         if (category == WLAN_ACTION_SA_QUERY) {
2829                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2830                 return;
2831         }
2832 #endif /* CONFIG_SME */
2833 #endif /* CONFIG_IEEE80211W */
2834
2835 #ifdef CONFIG_WNM
2836         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2837                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2838                 return;
2839         }
2840 #endif /* CONFIG_WNM */
2841
2842 #ifdef CONFIG_GAS
2843         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2844              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2845             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2846                          mgmt->u.action.category,
2847                          payload, plen, freq) == 0)
2848                 return;
2849 #endif /* CONFIG_GAS */
2850
2851 #ifdef CONFIG_TDLS
2852         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2853             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2854                 wpa_dbg(wpa_s, MSG_DEBUG,
2855                         "TDLS: Received Discovery Response from " MACSTR,
2856                         MAC2STR(mgmt->sa));
2857                 return;
2858         }
2859 #endif /* CONFIG_TDLS */
2860
2861 #ifdef CONFIG_INTERWORKING
2862         if (category == WLAN_ACTION_QOS && plen >= 1 &&
2863             payload[0] == QOS_QOS_MAP_CONFIG) {
2864                 const u8 *pos = payload + 1;
2865                 size_t qlen = plen - 1;
2866                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2867                         MACSTR, MAC2STR(mgmt->sa));
2868                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2869                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2870                     pos[1] <= qlen - 2 && pos[1] >= 16)
2871                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2872                 return;
2873         }
2874 #endif /* CONFIG_INTERWORKING */
2875
2876         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2877                            category, payload, plen, freq);
2878 }
2879
2880
2881 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2882                                              union wpa_event_data *event)
2883 {
2884 #ifdef CONFIG_P2P
2885         struct wpa_supplicant *ifs;
2886 #endif /* CONFIG_P2P */
2887         struct wpa_freq_range_list *list;
2888         char *str = NULL;
2889
2890         list = &event->freq_range;
2891
2892         if (list->num)
2893                 str = freq_range_list_str(list);
2894         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2895                 str ? str : "");
2896
2897 #ifdef CONFIG_P2P
2898         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2899                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2900                         __func__);
2901         } else {
2902                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2903                 wpas_p2p_update_channel_list(wpa_s);
2904         }
2905
2906         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2907                 int freq;
2908                 if (!ifs->current_ssid ||
2909                     !ifs->current_ssid->p2p_group ||
2910                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
2911                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
2912                         continue;
2913
2914                 freq = ifs->current_ssid->frequency;
2915                 if (!freq_range_list_includes(list, freq)) {
2916                         wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
2917                                 freq);
2918                         continue;
2919                 }
2920
2921                 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
2922                         freq);
2923                 /* TODO: Consider using CSA or removing the group within
2924                  * wpa_supplicant */
2925                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
2926         }
2927 #endif /* CONFIG_P2P */
2928
2929         os_free(str);
2930 }
2931
2932
2933 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2934                           union wpa_event_data *data)
2935 {
2936         struct wpa_supplicant *wpa_s = ctx;
2937
2938         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2939             event != EVENT_INTERFACE_ENABLED &&
2940             event != EVENT_INTERFACE_STATUS &&
2941             event != EVENT_SCHED_SCAN_STOPPED) {
2942                 wpa_dbg(wpa_s, MSG_DEBUG,
2943                         "Ignore event %s (%d) while interface is disabled",
2944                         event_to_string(event), event);
2945                 return;
2946         }
2947
2948 #ifndef CONFIG_NO_STDOUT_DEBUG
2949 {
2950         int level = MSG_DEBUG;
2951
2952         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2953                 const struct ieee80211_hdr *hdr;
2954                 u16 fc;
2955                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2956                 fc = le_to_host16(hdr->frame_control);
2957                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2958                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2959                         level = MSG_EXCESSIVE;
2960         }
2961
2962         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2963                 event_to_string(event), event);
2964 }
2965 #endif /* CONFIG_NO_STDOUT_DEBUG */
2966
2967         switch (event) {
2968         case EVENT_AUTH:
2969                 sme_event_auth(wpa_s, data);
2970                 break;
2971         case EVENT_ASSOC:
2972                 wpa_supplicant_event_assoc(wpa_s, data);
2973                 break;
2974         case EVENT_DISASSOC:
2975                 wpas_event_disassoc(wpa_s,
2976                                     data ? &data->disassoc_info : NULL);
2977                 break;
2978         case EVENT_DEAUTH:
2979                 wpas_event_deauth(wpa_s,
2980                                   data ? &data->deauth_info : NULL);
2981                 break;
2982         case EVENT_MICHAEL_MIC_FAILURE:
2983                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2984                 break;
2985 #ifndef CONFIG_NO_SCAN_PROCESSING
2986         case EVENT_SCAN_STARTED:
2987                 os_get_reltime(&wpa_s->scan_start_time);
2988                 if (wpa_s->own_scan_requested) {
2989                         struct os_reltime diff;
2990
2991                         os_reltime_sub(&wpa_s->scan_start_time,
2992                                        &wpa_s->scan_trigger_time, &diff);
2993                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
2994                                 diff.sec, diff.usec);
2995                         wpa_s->own_scan_requested = 0;
2996                         wpa_s->own_scan_running = 1;
2997                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
2998                             wpa_s->manual_scan_use_id) {
2999                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3000                                              WPA_EVENT_SCAN_STARTED "id=%u",
3001                                              wpa_s->manual_scan_id);
3002                         } else {
3003                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3004                                              WPA_EVENT_SCAN_STARTED);
3005                         }
3006                 } else {
3007                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3008                         wpa_s->external_scan_running = 1;
3009                         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3010                 }
3011                 break;
3012         case EVENT_SCAN_RESULTS:
3013                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
3014                         struct os_reltime now, diff;
3015                         os_get_reltime(&now);
3016                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3017                         wpa_s->scan_start_time.sec = 0;
3018                         wpa_s->scan_start_time.usec = 0;
3019                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3020                                 diff.sec, diff.usec);
3021                 }
3022                 wpa_supplicant_event_scan_results(wpa_s, data);
3023                 wpa_s->own_scan_running = 0;
3024                 wpa_s->external_scan_running = 0;
3025                 radio_work_check_next(wpa_s);
3026                 break;
3027 #endif /* CONFIG_NO_SCAN_PROCESSING */
3028         case EVENT_ASSOCINFO:
3029                 wpa_supplicant_event_associnfo(wpa_s, data);
3030                 break;
3031         case EVENT_INTERFACE_STATUS:
3032                 wpa_supplicant_event_interface_status(wpa_s, data);
3033                 break;
3034         case EVENT_PMKID_CANDIDATE:
3035                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3036                 break;
3037 #ifdef CONFIG_PEERKEY
3038         case EVENT_STKSTART:
3039                 wpa_supplicant_event_stkstart(wpa_s, data);
3040                 break;
3041 #endif /* CONFIG_PEERKEY */
3042 #ifdef CONFIG_TDLS
3043         case EVENT_TDLS:
3044                 wpa_supplicant_event_tdls(wpa_s, data);
3045                 break;
3046 #endif /* CONFIG_TDLS */
3047 #ifdef CONFIG_WNM
3048         case EVENT_WNM:
3049                 wpa_supplicant_event_wnm(wpa_s, data);
3050                 break;
3051 #endif /* CONFIG_WNM */
3052 #ifdef CONFIG_IEEE80211R
3053         case EVENT_FT_RESPONSE:
3054                 wpa_supplicant_event_ft_response(wpa_s, data);
3055                 break;
3056 #endif /* CONFIG_IEEE80211R */
3057 #ifdef CONFIG_IBSS_RSN
3058         case EVENT_IBSS_RSN_START:
3059                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3060                 break;
3061 #endif /* CONFIG_IBSS_RSN */
3062         case EVENT_ASSOC_REJECT:
3063                 if (data->assoc_reject.bssid)
3064                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3065                                 "bssid=" MACSTR " status_code=%u",
3066                                 MAC2STR(data->assoc_reject.bssid),
3067                                 data->assoc_reject.status_code);
3068                 else
3069                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3070                                 "status_code=%u",
3071                                 data->assoc_reject.status_code);
3072                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3073                         sme_event_assoc_reject(wpa_s, data);
3074                 else {
3075                         const u8 *bssid = data->assoc_reject.bssid;
3076                         if (bssid == NULL || is_zero_ether_addr(bssid))
3077                                 bssid = wpa_s->pending_bssid;
3078                         wpas_connection_failed(wpa_s, bssid);
3079                         wpa_supplicant_mark_disassoc(wpa_s);
3080                 }
3081                 break;
3082         case EVENT_AUTH_TIMED_OUT:
3083                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3084                         sme_event_auth_timed_out(wpa_s, data);
3085                 break;
3086         case EVENT_ASSOC_TIMED_OUT:
3087                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3088                         sme_event_assoc_timed_out(wpa_s, data);
3089                 break;
3090         case EVENT_TX_STATUS:
3091                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3092                         " type=%d stype=%d",
3093                         MAC2STR(data->tx_status.dst),
3094                         data->tx_status.type, data->tx_status.stype);
3095 #ifdef CONFIG_AP
3096                 if (wpa_s->ap_iface == NULL) {
3097 #ifdef CONFIG_OFFCHANNEL
3098                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3099                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3100                                 offchannel_send_action_tx_status(
3101                                         wpa_s, data->tx_status.dst,
3102                                         data->tx_status.data,
3103                                         data->tx_status.data_len,
3104                                         data->tx_status.ack ?
3105                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3106                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3107 #endif /* CONFIG_OFFCHANNEL */
3108                         break;
3109                 }
3110 #endif /* CONFIG_AP */
3111 #ifdef CONFIG_OFFCHANNEL
3112                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3113                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3114                 /*
3115                  * Catch TX status events for Action frames we sent via group
3116                  * interface in GO mode.
3117                  */
3118                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3119                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3120                     os_memcmp(wpa_s->parent->pending_action_dst,
3121                               data->tx_status.dst, ETH_ALEN) == 0) {
3122                         offchannel_send_action_tx_status(
3123                                 wpa_s->parent, data->tx_status.dst,
3124                                 data->tx_status.data,
3125                                 data->tx_status.data_len,
3126                                 data->tx_status.ack ?
3127                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3128                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3129                         break;
3130                 }
3131 #endif /* CONFIG_OFFCHANNEL */
3132 #ifdef CONFIG_AP
3133                 switch (data->tx_status.type) {
3134                 case WLAN_FC_TYPE_MGMT:
3135                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3136                                       data->tx_status.data_len,
3137                                       data->tx_status.stype,
3138                                       data->tx_status.ack);
3139                         break;
3140                 case WLAN_FC_TYPE_DATA:
3141                         ap_tx_status(wpa_s, data->tx_status.dst,
3142                                      data->tx_status.data,
3143                                      data->tx_status.data_len,
3144                                      data->tx_status.ack);
3145                         break;
3146                 }
3147 #endif /* CONFIG_AP */
3148                 break;
3149 #ifdef CONFIG_AP
3150         case EVENT_EAPOL_TX_STATUS:
3151                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3152                                    data->eapol_tx_status.data,
3153                                    data->eapol_tx_status.data_len,
3154                                    data->eapol_tx_status.ack);
3155                 break;
3156         case EVENT_DRIVER_CLIENT_POLL_OK:
3157                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3158                 break;
3159         case EVENT_RX_FROM_UNKNOWN:
3160                 if (wpa_s->ap_iface == NULL)
3161                         break;
3162                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3163                                        data->rx_from_unknown.wds);
3164                 break;
3165         case EVENT_CH_SWITCH:
3166                 if (!data)
3167                         break;
3168                 if (!wpa_s->ap_iface) {
3169                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3170                                 "event in non-AP mode");
3171                         break;
3172                 }
3173
3174                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3175                                   data->ch_switch.ht_enabled,
3176                                   data->ch_switch.ch_offset,
3177                                   data->ch_switch.ch_width,
3178                                   data->ch_switch.cf1,
3179                                   data->ch_switch.cf2);
3180                 break;
3181 #endif /* CONFIG_AP */
3182         case EVENT_RX_MGMT: {
3183                 u16 fc, stype;
3184                 const struct ieee80211_mgmt *mgmt;
3185
3186 #ifdef CONFIG_TESTING_OPTIONS
3187                 if (wpa_s->ext_mgmt_frame_handling) {
3188                         struct rx_mgmt *rx = &data->rx_mgmt;
3189                         size_t hex_len = 2 * rx->frame_len + 1;
3190                         char *hex = os_malloc(hex_len);
3191                         if (hex) {
3192                                 wpa_snprintf_hex(hex, hex_len,
3193                                                  rx->frame, rx->frame_len);
3194                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3195                                         rx->freq, rx->datarate, rx->ssi_signal,
3196                                         hex);
3197                                 os_free(hex);
3198                         }
3199                         break;
3200                 }
3201 #endif /* CONFIG_TESTING_OPTIONS */
3202
3203                 mgmt = (const struct ieee80211_mgmt *)
3204                         data->rx_mgmt.frame;
3205                 fc = le_to_host16(mgmt->frame_control);
3206                 stype = WLAN_FC_GET_STYPE(fc);
3207
3208 #ifdef CONFIG_AP
3209                 if (wpa_s->ap_iface == NULL) {
3210 #endif /* CONFIG_AP */
3211 #ifdef CONFIG_P2P
3212                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3213                             data->rx_mgmt.frame_len > 24) {
3214                                 const u8 *src = mgmt->sa;
3215                                 const u8 *ie = mgmt->u.probe_req.variable;
3216                                 size_t ie_len = data->rx_mgmt.frame_len -
3217                                         (mgmt->u.probe_req.variable -
3218                                          data->rx_mgmt.frame);
3219                                 wpas_p2p_probe_req_rx(
3220                                         wpa_s, src, mgmt->da,
3221                                         mgmt->bssid, ie, ie_len,
3222                                         data->rx_mgmt.ssi_signal);
3223                                 break;
3224                         }
3225 #endif /* CONFIG_P2P */
3226 #ifdef CONFIG_IBSS_RSN
3227                         if (stype == WLAN_FC_STYPE_AUTH &&
3228                             data->rx_mgmt.frame_len >= 30) {
3229                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3230                                 break;
3231                         }
3232 #endif /* CONFIG_IBSS_RSN */
3233
3234                         if (stype == WLAN_FC_STYPE_ACTION) {
3235                                 wpas_event_rx_mgmt_action(
3236                                         wpa_s, data->rx_mgmt.frame,
3237                                         data->rx_mgmt.frame_len,
3238                                         data->rx_mgmt.freq);
3239                                 break;
3240                         }
3241
3242                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3243                                 "management frame in non-AP mode");
3244                         break;
3245 #ifdef CONFIG_AP
3246                 }
3247
3248                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3249                     data->rx_mgmt.frame_len > 24) {
3250                         const u8 *ie = mgmt->u.probe_req.variable;
3251                         size_t ie_len = data->rx_mgmt.frame_len -
3252                                 (mgmt->u.probe_req.variable -
3253                                  data->rx_mgmt.frame);
3254
3255                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3256                                          mgmt->bssid, ie, ie_len,
3257                                          data->rx_mgmt.ssi_signal);
3258                 }
3259
3260                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3261 #endif /* CONFIG_AP */
3262                 break;
3263                 }
3264         case EVENT_RX_PROBE_REQ:
3265                 if (data->rx_probe_req.sa == NULL ||
3266                     data->rx_probe_req.ie == NULL)
3267                         break;
3268 #ifdef CONFIG_AP
3269                 if (wpa_s->ap_iface) {
3270                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3271                                              data->rx_probe_req.sa,
3272                                              data->rx_probe_req.da,
3273                                              data->rx_probe_req.bssid,
3274                                              data->rx_probe_req.ie,
3275                                              data->rx_probe_req.ie_len,
3276                                              data->rx_probe_req.ssi_signal);
3277                         break;
3278                 }
3279 #endif /* CONFIG_AP */
3280                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3281                                       data->rx_probe_req.da,
3282                                       data->rx_probe_req.bssid,
3283                                       data->rx_probe_req.ie,
3284                                       data->rx_probe_req.ie_len,
3285                                       data->rx_probe_req.ssi_signal);
3286                 break;
3287         case EVENT_REMAIN_ON_CHANNEL:
3288 #ifdef CONFIG_OFFCHANNEL
3289                 offchannel_remain_on_channel_cb(
3290                         wpa_s, data->remain_on_channel.freq,
3291                         data->remain_on_channel.duration);
3292 #endif /* CONFIG_OFFCHANNEL */
3293                 wpas_p2p_remain_on_channel_cb(
3294                         wpa_s, data->remain_on_channel.freq,
3295                         data->remain_on_channel.duration);
3296                 break;
3297         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3298 #ifdef CONFIG_OFFCHANNEL
3299                 offchannel_cancel_remain_on_channel_cb(
3300                         wpa_s, data->remain_on_channel.freq);
3301 #endif /* CONFIG_OFFCHANNEL */
3302                 wpas_p2p_cancel_remain_on_channel_cb(
3303                         wpa_s, data->remain_on_channel.freq);
3304                 break;
3305         case EVENT_EAPOL_RX:
3306                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3307                                         data->eapol_rx.data,
3308                                         data->eapol_rx.data_len);
3309                 break;
3310         case EVENT_SIGNAL_CHANGE:
3311                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3312                         "above=%d signal=%d noise=%d txrate=%d",
3313                         data->signal_change.above_threshold,
3314                         data->signal_change.current_signal,
3315                         data->signal_change.current_noise,
3316                         data->signal_change.current_txrate);
3317                 bgscan_notify_signal_change(
3318                         wpa_s, data->signal_change.above_threshold,
3319                         data->signal_change.current_signal,
3320                         data->signal_change.current_noise,
3321                         data->signal_change.current_txrate);
3322                 break;
3323         case EVENT_INTERFACE_ENABLED:
3324                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3325                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3326                         wpa_supplicant_update_mac_addr(wpa_s);
3327                         if (wpa_s->p2p_mgmt) {
3328                                 wpa_supplicant_set_state(wpa_s,
3329                                                          WPA_DISCONNECTED);
3330                                 break;
3331                         }
3332
3333 #ifdef CONFIG_AP
3334                         if (!wpa_s->ap_iface) {
3335                                 wpa_supplicant_set_state(wpa_s,
3336                                                          WPA_DISCONNECTED);
3337                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3338                         } else
3339                                 wpa_supplicant_set_state(wpa_s,
3340                                                          WPA_COMPLETED);
3341 #else /* CONFIG_AP */
3342                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3343                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3344 #endif /* CONFIG_AP */
3345                 }
3346                 break;
3347         case EVENT_INTERFACE_DISABLED:
3348                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3349 #ifdef CONFIG_P2P
3350                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3351                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3352                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3353                         /*
3354                          * The interface was externally disabled. Remove
3355                          * it assuming an external entity will start a
3356                          * new session if needed.
3357                          */
3358                         wpas_p2p_disconnect(wpa_s);
3359                         break;
3360                 }
3361                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3362                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3363                         /* This radio work will be cancelled, so clear P2P
3364                          * state as well.
3365                          */
3366                         p2p_stop_find(wpa_s->global->p2p);
3367                 }
3368 #endif /* CONFIG_P2P */
3369
3370                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3371                         /*
3372                          * Indicate disconnection to keep ctrl_iface events
3373                          * consistent.
3374                          */
3375                         wpa_supplicant_event_disassoc(
3376                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3377                 }
3378                 wpa_supplicant_mark_disassoc(wpa_s);
3379                 radio_remove_works(wpa_s, NULL, 0);
3380
3381                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3382                 break;
3383         case EVENT_CHANNEL_LIST_CHANGED:
3384                 wpa_supplicant_update_channel_list(
3385                         wpa_s, &data->channel_list_changed);
3386                 break;
3387         case EVENT_INTERFACE_UNAVAILABLE:
3388                 wpas_p2p_interface_unavailable(wpa_s);
3389                 break;
3390         case EVENT_BEST_CHANNEL:
3391                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3392                         "(%d %d %d)",
3393                         data->best_chan.freq_24, data->best_chan.freq_5,
3394                         data->best_chan.freq_overall);
3395                 wpa_s->best_24_freq = data->best_chan.freq_24;
3396                 wpa_s->best_5_freq = data->best_chan.freq_5;
3397                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3398                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3399                                               data->best_chan.freq_5,
3400                                               data->best_chan.freq_overall);
3401                 break;
3402         case EVENT_UNPROT_DEAUTH:
3403                 wpa_supplicant_event_unprot_deauth(wpa_s,
3404                                                    &data->unprot_deauth);
3405                 break;
3406         case EVENT_UNPROT_DISASSOC:
3407                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3408                                                      &data->unprot_disassoc);
3409                 break;
3410         case EVENT_STATION_LOW_ACK:
3411 #ifdef CONFIG_AP
3412                 if (wpa_s->ap_iface && data)
3413                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3414                                                   data->low_ack.addr);
3415 #endif /* CONFIG_AP */
3416 #ifdef CONFIG_TDLS
3417                 if (data)
3418                         wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3419                                                           data->low_ack.addr);
3420 #endif /* CONFIG_TDLS */
3421                 break;
3422         case EVENT_IBSS_PEER_LOST:
3423 #ifdef CONFIG_IBSS_RSN
3424                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3425 #endif /* CONFIG_IBSS_RSN */
3426                 break;
3427         case EVENT_DRIVER_GTK_REKEY:
3428                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3429                               wpa_s->bssid, ETH_ALEN))
3430                         break;
3431                 if (!wpa_s->wpa)
3432                         break;
3433                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3434                                          data->driver_gtk_rekey.replay_ctr);
3435                 break;
3436         case EVENT_SCHED_SCAN_STOPPED:
3437                 wpa_s->pno = 0;
3438                 wpa_s->sched_scanning = 0;
3439                 wpa_supplicant_notify_scanning(wpa_s, 0);
3440
3441                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3442                         break;
3443
3444                 /*
3445                  * Start a new sched scan to continue searching for more SSIDs
3446                  * either if timed out or PNO schedule scan is pending.
3447                  */
3448                 if (wpa_s->sched_scan_timed_out) {
3449                         wpa_supplicant_req_sched_scan(wpa_s);
3450                 } else if (wpa_s->pno_sched_pending) {
3451                         wpa_s->pno_sched_pending = 0;
3452                         wpas_start_pno(wpa_s);
3453                 }
3454
3455                 break;
3456         case EVENT_WPS_BUTTON_PUSHED:
3457 #ifdef CONFIG_WPS
3458                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3459 #endif /* CONFIG_WPS */
3460                 break;
3461         case EVENT_AVOID_FREQUENCIES:
3462                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3463                 break;
3464         case EVENT_CONNECT_FAILED_REASON:
3465 #ifdef CONFIG_AP
3466                 if (!wpa_s->ap_iface || !data)
3467                         break;
3468                 hostapd_event_connect_failed_reason(
3469                         wpa_s->ap_iface->bss[0],
3470                         data->connect_failed_reason.addr,
3471                         data->connect_failed_reason.code);
3472 #endif /* CONFIG_AP */
3473                 break;
3474         default:
3475                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3476                 break;
3477         }
3478 }