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 static 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 static 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                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2164                         "reconnect (wps=%d wpa_state=%d)",
2165                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2166                         wpa_s->wpa_state);
2167                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2168                     wpa_s->current_ssid &&
2169                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2170                     !locally_generated &&
2171                     disconnect_reason_recoverable(reason_code)) {
2172                         /*
2173                          * It looks like the AP has dropped association with
2174                          * us, but could allow us to get back in. Try to
2175                          * reconnect to the same BSS without full scan to save
2176                          * time for some common cases.
2177                          */
2178                         fast_reconnect = wpa_s->current_bss;
2179                         fast_reconnect_ssid = wpa_s->current_ssid;
2180                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2181                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2182                 else
2183                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2184                                 "immediate scan");
2185         } else {
2186                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2187                         "try to re-connect");
2188                 wpa_s->reassociate = 0;
2189                 wpa_s->disconnected = 1;
2190                 wpa_supplicant_cancel_sched_scan(wpa_s);
2191         }
2192         bssid = wpa_s->bssid;
2193         if (is_zero_ether_addr(bssid))
2194                 bssid = wpa_s->pending_bssid;
2195         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2196                 wpas_connection_failed(wpa_s, bssid);
2197         wpa_sm_notify_disassoc(wpa_s->wpa);
2198         if (locally_generated)
2199                 wpa_s->disconnect_reason = -reason_code;
2200         else
2201                 wpa_s->disconnect_reason = reason_code;
2202         wpas_notify_disconnect_reason(wpa_s);
2203         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2204                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2205                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2206         }
2207         last_ssid = wpa_s->current_ssid;
2208         wpa_supplicant_mark_disassoc(wpa_s);
2209
2210         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2211                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2212                 wpa_s->current_ssid = last_ssid;
2213         }
2214
2215         if (fast_reconnect &&
2216             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2217             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2218             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2219                              fast_reconnect->ssid_len) &&
2220             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2221 #ifndef CONFIG_NO_SCAN_PROCESSING
2222                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2223                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2224                                            fast_reconnect_ssid) < 0) {
2225                         /* Recover through full scan */
2226                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2227                 }
2228 #endif /* CONFIG_NO_SCAN_PROCESSING */
2229         } else if (fast_reconnect) {
2230                 /*
2231                  * Could not reconnect to the same BSS due to network being
2232                  * disabled. Use a new scan to match the alternative behavior
2233                  * above, i.e., to continue automatic reconnection attempt in a
2234                  * way that enforces disabled network rules.
2235                  */
2236                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2237         }
2238 }
2239
2240
2241 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2242 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2243 {
2244         struct wpa_supplicant *wpa_s = eloop_ctx;
2245
2246         if (!wpa_s->pending_mic_error_report)
2247                 return;
2248
2249         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2250         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2251         wpa_s->pending_mic_error_report = 0;
2252 }
2253 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2254
2255
2256 static void
2257 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2258                                          union wpa_event_data *data)
2259 {
2260         int pairwise;
2261         struct os_reltime t;
2262
2263         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2264         pairwise = (data && data->michael_mic_failure.unicast);
2265         os_get_reltime(&t);
2266         if ((wpa_s->last_michael_mic_error.sec &&
2267              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2268             wpa_s->pending_mic_error_report) {
2269                 if (wpa_s->pending_mic_error_report) {
2270                         /*
2271                          * Send the pending MIC error report immediately since
2272                          * we are going to start countermeasures and AP better
2273                          * do the same.
2274                          */
2275                         wpa_sm_key_request(wpa_s->wpa, 1,
2276                                            wpa_s->pending_mic_error_pairwise);
2277                 }
2278
2279                 /* Send the new MIC error report immediately since we are going
2280                  * to start countermeasures and AP better do the same.
2281                  */
2282                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2283
2284                 /* initialize countermeasures */
2285                 wpa_s->countermeasures = 1;
2286
2287                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2288
2289                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2290
2291                 /*
2292                  * Need to wait for completion of request frame. We do not get
2293                  * any callback for the message completion, so just wait a
2294                  * short while and hope for the best. */
2295                 os_sleep(0, 10000);
2296
2297                 wpa_drv_set_countermeasures(wpa_s, 1);
2298                 wpa_supplicant_deauthenticate(wpa_s,
2299                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2300                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2301                                      wpa_s, NULL);
2302                 eloop_register_timeout(60, 0,
2303                                        wpa_supplicant_stop_countermeasures,
2304                                        wpa_s, NULL);
2305                 /* TODO: mark the AP rejected for 60 second. STA is
2306                  * allowed to associate with another AP.. */
2307         } else {
2308 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2309                 if (wpa_s->mic_errors_seen) {
2310                         /*
2311                          * Reduce the effectiveness of Michael MIC error
2312                          * reports as a means for attacking against TKIP if
2313                          * more than one MIC failure is noticed with the same
2314                          * PTK. We delay the transmission of the reports by a
2315                          * random time between 0 and 60 seconds in order to
2316                          * force the attacker wait 60 seconds before getting
2317                          * the information on whether a frame resulted in a MIC
2318                          * failure.
2319                          */
2320                         u8 rval[4];
2321                         int sec;
2322
2323                         if (os_get_random(rval, sizeof(rval)) < 0)
2324                                 sec = os_random() % 60;
2325                         else
2326                                 sec = WPA_GET_BE32(rval) % 60;
2327                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2328                                 "report %d seconds", sec);
2329                         wpa_s->pending_mic_error_report = 1;
2330                         wpa_s->pending_mic_error_pairwise = pairwise;
2331                         eloop_cancel_timeout(
2332                                 wpa_supplicant_delayed_mic_error_report,
2333                                 wpa_s, NULL);
2334                         eloop_register_timeout(
2335                                 sec, os_random() % 1000000,
2336                                 wpa_supplicant_delayed_mic_error_report,
2337                                 wpa_s, NULL);
2338                 } else {
2339                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2340                 }
2341 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2342                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2343 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2344         }
2345         wpa_s->last_michael_mic_error = t;
2346         wpa_s->mic_errors_seen++;
2347 }
2348
2349
2350 #ifdef CONFIG_TERMINATE_ONLASTIF
2351 static int any_interfaces(struct wpa_supplicant *head)
2352 {
2353         struct wpa_supplicant *wpa_s;
2354
2355         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2356                 if (!wpa_s->interface_removed)
2357                         return 1;
2358         return 0;
2359 }
2360 #endif /* CONFIG_TERMINATE_ONLASTIF */
2361
2362
2363 static void
2364 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2365                                       union wpa_event_data *data)
2366 {
2367         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2368                 return;
2369
2370         switch (data->interface_status.ievent) {
2371         case EVENT_INTERFACE_ADDED:
2372                 if (!wpa_s->interface_removed)
2373                         break;
2374                 wpa_s->interface_removed = 0;
2375                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2376                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2377                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2378                                 "driver after interface was added");
2379                 }
2380                 break;
2381         case EVENT_INTERFACE_REMOVED:
2382                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2383                 wpa_s->interface_removed = 1;
2384                 wpa_supplicant_mark_disassoc(wpa_s);
2385                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2386                 l2_packet_deinit(wpa_s->l2);
2387                 wpa_s->l2 = NULL;
2388 #ifdef CONFIG_TERMINATE_ONLASTIF
2389                 /* check if last interface */
2390                 if (!any_interfaces(wpa_s->global->ifaces))
2391                         eloop_terminate();
2392 #endif /* CONFIG_TERMINATE_ONLASTIF */
2393                 break;
2394         }
2395 }
2396
2397
2398 #ifdef CONFIG_PEERKEY
2399 static void
2400 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2401                               union wpa_event_data *data)
2402 {
2403         if (data == NULL)
2404                 return;
2405         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2406 }
2407 #endif /* CONFIG_PEERKEY */
2408
2409
2410 #ifdef CONFIG_TDLS
2411 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2412                                       union wpa_event_data *data)
2413 {
2414         if (data == NULL)
2415                 return;
2416         switch (data->tdls.oper) {
2417         case TDLS_REQUEST_SETUP:
2418                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2419                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2420                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2421                 else
2422                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2423                 break;
2424         case TDLS_REQUEST_TEARDOWN:
2425                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2426                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2427                                                data->tdls.reason_code);
2428                 else
2429                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2430                                           data->tdls.peer);
2431                 break;
2432         }
2433 }
2434 #endif /* CONFIG_TDLS */
2435
2436
2437 #ifdef CONFIG_WNM
2438 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2439                                      union wpa_event_data *data)
2440 {
2441         if (data == NULL)
2442                 return;
2443         switch (data->wnm.oper) {
2444         case WNM_OPER_SLEEP:
2445                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2446                            "(action=%d, intval=%d)",
2447                            data->wnm.sleep_action, data->wnm.sleep_intval);
2448                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2449                                              data->wnm.sleep_intval, NULL);
2450                 break;
2451         }
2452 }
2453 #endif /* CONFIG_WNM */
2454
2455
2456 #ifdef CONFIG_IEEE80211R
2457 static void
2458 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2459                                  union wpa_event_data *data)
2460 {
2461         if (data == NULL)
2462                 return;
2463
2464         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2465                                     data->ft_ies.ies_len,
2466                                     data->ft_ies.ft_action,
2467                                     data->ft_ies.target_ap,
2468                                     data->ft_ies.ric_ies,
2469                                     data->ft_ies.ric_ies_len) < 0) {
2470                 /* TODO: prevent MLME/driver from trying to associate? */
2471         }
2472 }
2473 #endif /* CONFIG_IEEE80211R */
2474
2475
2476 #ifdef CONFIG_IBSS_RSN
2477 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2478                                                 union wpa_event_data *data)
2479 {
2480         struct wpa_ssid *ssid;
2481         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2482                 return;
2483         if (data == NULL)
2484                 return;
2485         ssid = wpa_s->current_ssid;
2486         if (ssid == NULL)
2487                 return;
2488         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2489                 return;
2490
2491         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2492 }
2493
2494
2495 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2496                                            union wpa_event_data *data)
2497 {
2498         struct wpa_ssid *ssid = wpa_s->current_ssid;
2499
2500         if (ssid == NULL)
2501                 return;
2502
2503         /* check if the ssid is correctly configured as IBSS/RSN */
2504         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2505                 return;
2506
2507         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2508                              data->rx_mgmt.frame_len);
2509 }
2510 #endif /* CONFIG_IBSS_RSN */
2511
2512
2513 #ifdef CONFIG_IEEE80211R
2514 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2515                          size_t len)
2516 {
2517         const u8 *sta_addr, *target_ap_addr;
2518         u16 status;
2519
2520         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2521         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2522                 return; /* only SME case supported for now */
2523         if (len < 1 + 2 * ETH_ALEN + 2)
2524                 return;
2525         if (data[0] != 2)
2526                 return; /* Only FT Action Response is supported for now */
2527         sta_addr = data + 1;
2528         target_ap_addr = data + 1 + ETH_ALEN;
2529         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2530         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2531                 MACSTR " TargetAP " MACSTR " status %u",
2532                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2533
2534         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2535                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2536                         " in FT Action Response", MAC2STR(sta_addr));
2537                 return;
2538         }
2539
2540         if (status) {
2541                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2542                         "failure (status code %d)", status);
2543                 /* TODO: report error to FT code(?) */
2544                 return;
2545         }
2546
2547         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2548                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2549                                     target_ap_addr, NULL, 0) < 0)
2550                 return;
2551
2552 #ifdef CONFIG_SME
2553         {
2554                 struct wpa_bss *bss;
2555                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2556                 if (bss)
2557                         wpa_s->sme.freq = bss->freq;
2558                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2559                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2560                               WLAN_AUTH_FT);
2561         }
2562 #endif /* CONFIG_SME */
2563 }
2564 #endif /* CONFIG_IEEE80211R */
2565
2566
2567 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2568                                                struct unprot_deauth *e)
2569 {
2570 #ifdef CONFIG_IEEE80211W
2571         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2572                    "dropped: " MACSTR " -> " MACSTR
2573                    " (reason code %u)",
2574                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2575         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2576 #endif /* CONFIG_IEEE80211W */
2577 }
2578
2579
2580 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2581                                                  struct unprot_disassoc *e)
2582 {
2583 #ifdef CONFIG_IEEE80211W
2584         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2585                    "dropped: " MACSTR " -> " MACSTR
2586                    " (reason code %u)",
2587                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2588         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2589 #endif /* CONFIG_IEEE80211W */
2590 }
2591
2592
2593 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2594                                   u16 reason_code, int locally_generated,
2595                                   const u8 *ie, size_t ie_len, int deauth)
2596 {
2597 #ifdef CONFIG_AP
2598         if (wpa_s->ap_iface && addr) {
2599                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2600                 return;
2601         }
2602
2603         if (wpa_s->ap_iface) {
2604                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2605                 return;
2606         }
2607 #endif /* CONFIG_AP */
2608
2609         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2610
2611         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2612               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2613                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2614                eapol_sm_failed(wpa_s->eapol))) &&
2615              !wpa_s->eap_expected_failure))
2616                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2617
2618 #ifdef CONFIG_P2P
2619         if (deauth && reason_code > 0) {
2620                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2621                                           locally_generated) > 0) {
2622                         /*
2623                          * The interface was removed, so cannot continue
2624                          * processing any additional operations after this.
2625                          */
2626                         return;
2627                 }
2628         }
2629 #endif /* CONFIG_P2P */
2630
2631         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2632                                              locally_generated);
2633 }
2634
2635
2636 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2637                                 struct disassoc_info *info)
2638 {
2639         u16 reason_code = 0;
2640         int locally_generated = 0;
2641         const u8 *addr = NULL;
2642         const u8 *ie = NULL;
2643         size_t ie_len = 0;
2644
2645         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2646
2647         if (info) {
2648                 addr = info->addr;
2649                 ie = info->ie;
2650                 ie_len = info->ie_len;
2651                 reason_code = info->reason_code;
2652                 locally_generated = info->locally_generated;
2653                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2654                         locally_generated ? " (locally generated)" : "");
2655                 if (addr)
2656                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2657                                 MAC2STR(addr));
2658                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2659                             ie, ie_len);
2660         }
2661
2662 #ifdef CONFIG_AP
2663         if (wpa_s->ap_iface && info && info->addr) {
2664                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2665                 return;
2666         }
2667
2668         if (wpa_s->ap_iface) {
2669                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2670                 return;
2671         }
2672 #endif /* CONFIG_AP */
2673
2674 #ifdef CONFIG_P2P
2675         if (info) {
2676                 wpas_p2p_disassoc_notif(
2677                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2678                         locally_generated);
2679         }
2680 #endif /* CONFIG_P2P */
2681
2682         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2683                 sme_event_disassoc(wpa_s, info);
2684
2685         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2686                               ie, ie_len, 0);
2687 }
2688
2689
2690 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2691                               struct deauth_info *info)
2692 {
2693         u16 reason_code = 0;
2694         int locally_generated = 0;
2695         const u8 *addr = NULL;
2696         const u8 *ie = NULL;
2697         size_t ie_len = 0;
2698
2699         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2700
2701         if (info) {
2702                 addr = info->addr;
2703                 ie = info->ie;
2704                 ie_len = info->ie_len;
2705                 reason_code = info->reason_code;
2706                 locally_generated = info->locally_generated;
2707                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2708                         reason_code,
2709                         locally_generated ? " (locally generated)" : "");
2710                 if (addr) {
2711                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2712                                 MAC2STR(addr));
2713                 }
2714                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2715                             ie, ie_len);
2716         }
2717
2718         wpa_reset_ft_completed(wpa_s->wpa);
2719
2720         wpas_event_disconnect(wpa_s, addr, reason_code,
2721                               locally_generated, ie, ie_len, 1);
2722 }
2723
2724
2725 static const char * reg_init_str(enum reg_change_initiator init)
2726 {
2727         switch (init) {
2728         case REGDOM_SET_BY_CORE:
2729                 return "CORE";
2730         case REGDOM_SET_BY_USER:
2731                 return "USER";
2732         case REGDOM_SET_BY_DRIVER:
2733                 return "DRIVER";
2734         case REGDOM_SET_BY_COUNTRY_IE:
2735                 return "COUNTRY_IE";
2736         case REGDOM_BEACON_HINT:
2737                 return "BEACON_HINT";
2738         }
2739         return "?";
2740 }
2741
2742
2743 static const char * reg_type_str(enum reg_type type)
2744 {
2745         switch (type) {
2746         case REGDOM_TYPE_UNKNOWN:
2747                 return "UNKNOWN";
2748         case REGDOM_TYPE_COUNTRY:
2749                 return "COUNTRY";
2750         case REGDOM_TYPE_WORLD:
2751                 return "WORLD";
2752         case REGDOM_TYPE_CUSTOM_WORLD:
2753                 return "CUSTOM_WORLD";
2754         case REGDOM_TYPE_INTERSECTION:
2755                 return "INTERSECTION";
2756         }
2757         return "?";
2758 }
2759
2760
2761 static void wpa_supplicant_update_channel_list(
2762         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
2763 {
2764         struct wpa_supplicant *ifs;
2765
2766         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
2767                 reg_init_str(info->initiator), reg_type_str(info->type),
2768                 info->alpha2[0] ? " alpha2=" : "",
2769                 info->alpha2[0] ? info->alpha2 : "");
2770
2771         if (wpa_s->drv_priv == NULL)
2772                 return; /* Ignore event during drv initialization */
2773
2774         free_hw_features(wpa_s);
2775         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2776                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2777
2778         wpas_p2p_update_channel_list(wpa_s);
2779
2780         /*
2781          * Check other interfaces to see if they share the same radio. If
2782          * so, they get updated with this same hw mode info.
2783          */
2784         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2785                          radio_list) {
2786                 if (ifs != wpa_s) {
2787                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2788                                    ifs->ifname);
2789                         free_hw_features(ifs);
2790                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2791                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2792                 }
2793         }
2794 }
2795
2796
2797 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2798                                       const u8 *frame, size_t len, int freq)
2799 {
2800         const struct ieee80211_mgmt *mgmt;
2801         const u8 *payload;
2802         size_t plen;
2803         u8 category;
2804
2805         if (len < IEEE80211_HDRLEN + 2)
2806                 return;
2807
2808         mgmt = (const struct ieee80211_mgmt *) frame;
2809         payload = frame + IEEE80211_HDRLEN;
2810         category = *payload++;
2811         plen = len - IEEE80211_HDRLEN - 1;
2812
2813         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2814                 " Category=%u DataLen=%d freq=%d MHz",
2815                 MAC2STR(mgmt->sa), category, (int) plen, freq);
2816
2817 #ifdef CONFIG_IEEE80211R
2818         if (category == WLAN_ACTION_FT) {
2819                 ft_rx_action(wpa_s, payload, plen);
2820                 return;
2821         }
2822 #endif /* CONFIG_IEEE80211R */
2823
2824 #ifdef CONFIG_IEEE80211W
2825 #ifdef CONFIG_SME
2826         if (category == WLAN_ACTION_SA_QUERY) {
2827                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2828                 return;
2829         }
2830 #endif /* CONFIG_SME */
2831 #endif /* CONFIG_IEEE80211W */
2832
2833 #ifdef CONFIG_WNM
2834         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2835                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2836                 return;
2837         }
2838 #endif /* CONFIG_WNM */
2839
2840 #ifdef CONFIG_GAS
2841         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2842              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2843             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2844                          mgmt->u.action.category,
2845                          payload, plen, freq) == 0)
2846                 return;
2847 #endif /* CONFIG_GAS */
2848
2849 #ifdef CONFIG_TDLS
2850         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2851             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2852                 wpa_dbg(wpa_s, MSG_DEBUG,
2853                         "TDLS: Received Discovery Response from " MACSTR,
2854                         MAC2STR(mgmt->sa));
2855                 return;
2856         }
2857 #endif /* CONFIG_TDLS */
2858
2859 #ifdef CONFIG_INTERWORKING
2860         if (category == WLAN_ACTION_QOS && plen >= 1 &&
2861             payload[0] == QOS_QOS_MAP_CONFIG) {
2862                 const u8 *pos = payload + 1;
2863                 size_t qlen = plen - 1;
2864                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2865                         MACSTR, MAC2STR(mgmt->sa));
2866                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2867                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2868                     pos[1] <= qlen - 2 && pos[1] >= 16)
2869                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2870                 return;
2871         }
2872 #endif /* CONFIG_INTERWORKING */
2873
2874         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2875                            category, payload, plen, freq);
2876 }
2877
2878
2879 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2880                                              union wpa_event_data *event)
2881 {
2882 #ifdef CONFIG_P2P
2883         struct wpa_supplicant *ifs;
2884 #endif /* CONFIG_P2P */
2885         struct wpa_freq_range_list *list;
2886         char *str = NULL;
2887
2888         list = &event->freq_range;
2889
2890         if (list->num)
2891                 str = freq_range_list_str(list);
2892         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2893                 str ? str : "");
2894
2895 #ifdef CONFIG_P2P
2896         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2897                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2898                         __func__);
2899         } else {
2900                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2901                 wpas_p2p_update_channel_list(wpa_s);
2902         }
2903
2904         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2905                 int freq;
2906                 if (!ifs->current_ssid ||
2907                     !ifs->current_ssid->p2p_group ||
2908                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
2909                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
2910                         continue;
2911
2912                 freq = ifs->current_ssid->frequency;
2913                 if (!freq_range_list_includes(list, freq)) {
2914                         wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
2915                                 freq);
2916                         continue;
2917                 }
2918
2919                 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
2920                         freq);
2921                 /* TODO: Consider using CSA or removing the group within
2922                  * wpa_supplicant */
2923                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
2924         }
2925 #endif /* CONFIG_P2P */
2926
2927         os_free(str);
2928 }
2929
2930
2931 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2932                           union wpa_event_data *data)
2933 {
2934         struct wpa_supplicant *wpa_s = ctx;
2935
2936         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2937             event != EVENT_INTERFACE_ENABLED &&
2938             event != EVENT_INTERFACE_STATUS &&
2939             event != EVENT_SCHED_SCAN_STOPPED) {
2940                 wpa_dbg(wpa_s, MSG_DEBUG,
2941                         "Ignore event %s (%d) while interface is disabled",
2942                         event_to_string(event), event);
2943                 return;
2944         }
2945
2946 #ifndef CONFIG_NO_STDOUT_DEBUG
2947 {
2948         int level = MSG_DEBUG;
2949
2950         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2951                 const struct ieee80211_hdr *hdr;
2952                 u16 fc;
2953                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2954                 fc = le_to_host16(hdr->frame_control);
2955                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2956                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2957                         level = MSG_EXCESSIVE;
2958         }
2959
2960         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2961                 event_to_string(event), event);
2962 }
2963 #endif /* CONFIG_NO_STDOUT_DEBUG */
2964
2965         switch (event) {
2966         case EVENT_AUTH:
2967                 sme_event_auth(wpa_s, data);
2968                 break;
2969         case EVENT_ASSOC:
2970                 wpa_supplicant_event_assoc(wpa_s, data);
2971                 break;
2972         case EVENT_DISASSOC:
2973                 wpas_event_disassoc(wpa_s,
2974                                     data ? &data->disassoc_info : NULL);
2975                 break;
2976         case EVENT_DEAUTH:
2977                 wpas_event_deauth(wpa_s,
2978                                   data ? &data->deauth_info : NULL);
2979                 break;
2980         case EVENT_MICHAEL_MIC_FAILURE:
2981                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2982                 break;
2983 #ifndef CONFIG_NO_SCAN_PROCESSING
2984         case EVENT_SCAN_STARTED:
2985                 os_get_reltime(&wpa_s->scan_start_time);
2986                 if (wpa_s->own_scan_requested) {
2987                         struct os_reltime diff;
2988
2989                         os_reltime_sub(&wpa_s->scan_start_time,
2990                                        &wpa_s->scan_trigger_time, &diff);
2991                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
2992                                 diff.sec, diff.usec);
2993                         wpa_s->own_scan_requested = 0;
2994                         wpa_s->own_scan_running = 1;
2995                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
2996                             wpa_s->manual_scan_use_id) {
2997                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
2998                                              WPA_EVENT_SCAN_STARTED "id=%u",
2999                                              wpa_s->manual_scan_id);
3000                         } else {
3001                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3002                                              WPA_EVENT_SCAN_STARTED);
3003                         }
3004                 } else {
3005                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3006                         wpa_s->external_scan_running = 1;
3007                         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3008                 }
3009                 break;
3010         case EVENT_SCAN_RESULTS:
3011                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
3012                         struct os_reltime now, diff;
3013                         os_get_reltime(&now);
3014                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3015                         wpa_s->scan_start_time.sec = 0;
3016                         wpa_s->scan_start_time.usec = 0;
3017                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3018                                 diff.sec, diff.usec);
3019                 }
3020                 wpa_supplicant_event_scan_results(wpa_s, data);
3021                 wpa_s->own_scan_running = 0;
3022                 wpa_s->external_scan_running = 0;
3023                 radio_work_check_next(wpa_s);
3024                 break;
3025 #endif /* CONFIG_NO_SCAN_PROCESSING */
3026         case EVENT_ASSOCINFO:
3027                 wpa_supplicant_event_associnfo(wpa_s, data);
3028                 break;
3029         case EVENT_INTERFACE_STATUS:
3030                 wpa_supplicant_event_interface_status(wpa_s, data);
3031                 break;
3032         case EVENT_PMKID_CANDIDATE:
3033                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3034                 break;
3035 #ifdef CONFIG_PEERKEY
3036         case EVENT_STKSTART:
3037                 wpa_supplicant_event_stkstart(wpa_s, data);
3038                 break;
3039 #endif /* CONFIG_PEERKEY */
3040 #ifdef CONFIG_TDLS
3041         case EVENT_TDLS:
3042                 wpa_supplicant_event_tdls(wpa_s, data);
3043                 break;
3044 #endif /* CONFIG_TDLS */
3045 #ifdef CONFIG_WNM
3046         case EVENT_WNM:
3047                 wpa_supplicant_event_wnm(wpa_s, data);
3048                 break;
3049 #endif /* CONFIG_WNM */
3050 #ifdef CONFIG_IEEE80211R
3051         case EVENT_FT_RESPONSE:
3052                 wpa_supplicant_event_ft_response(wpa_s, data);
3053                 break;
3054 #endif /* CONFIG_IEEE80211R */
3055 #ifdef CONFIG_IBSS_RSN
3056         case EVENT_IBSS_RSN_START:
3057                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3058                 break;
3059 #endif /* CONFIG_IBSS_RSN */
3060         case EVENT_ASSOC_REJECT:
3061                 if (data->assoc_reject.bssid)
3062                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3063                                 "bssid=" MACSTR " status_code=%u",
3064                                 MAC2STR(data->assoc_reject.bssid),
3065                                 data->assoc_reject.status_code);
3066                 else
3067                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3068                                 "status_code=%u",
3069                                 data->assoc_reject.status_code);
3070                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3071                         sme_event_assoc_reject(wpa_s, data);
3072                 else {
3073                         const u8 *bssid = data->assoc_reject.bssid;
3074                         if (bssid == NULL || is_zero_ether_addr(bssid))
3075                                 bssid = wpa_s->pending_bssid;
3076                         wpas_connection_failed(wpa_s, bssid);
3077                         wpa_supplicant_mark_disassoc(wpa_s);
3078                 }
3079                 break;
3080         case EVENT_AUTH_TIMED_OUT:
3081                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3082                         sme_event_auth_timed_out(wpa_s, data);
3083                 break;
3084         case EVENT_ASSOC_TIMED_OUT:
3085                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3086                         sme_event_assoc_timed_out(wpa_s, data);
3087                 break;
3088         case EVENT_TX_STATUS:
3089                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3090                         " type=%d stype=%d",
3091                         MAC2STR(data->tx_status.dst),
3092                         data->tx_status.type, data->tx_status.stype);
3093 #ifdef CONFIG_AP
3094                 if (wpa_s->ap_iface == NULL) {
3095 #ifdef CONFIG_OFFCHANNEL
3096                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3097                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3098                                 offchannel_send_action_tx_status(
3099                                         wpa_s, data->tx_status.dst,
3100                                         data->tx_status.data,
3101                                         data->tx_status.data_len,
3102                                         data->tx_status.ack ?
3103                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3104                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3105 #endif /* CONFIG_OFFCHANNEL */
3106                         break;
3107                 }
3108 #endif /* CONFIG_AP */
3109 #ifdef CONFIG_OFFCHANNEL
3110                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3111                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3112                 /*
3113                  * Catch TX status events for Action frames we sent via group
3114                  * interface in GO mode.
3115                  */
3116                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3117                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3118                     os_memcmp(wpa_s->parent->pending_action_dst,
3119                               data->tx_status.dst, ETH_ALEN) == 0) {
3120                         offchannel_send_action_tx_status(
3121                                 wpa_s->parent, data->tx_status.dst,
3122                                 data->tx_status.data,
3123                                 data->tx_status.data_len,
3124                                 data->tx_status.ack ?
3125                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3126                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3127                         break;
3128                 }
3129 #endif /* CONFIG_OFFCHANNEL */
3130 #ifdef CONFIG_AP
3131                 switch (data->tx_status.type) {
3132                 case WLAN_FC_TYPE_MGMT:
3133                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3134                                       data->tx_status.data_len,
3135                                       data->tx_status.stype,
3136                                       data->tx_status.ack);
3137                         break;
3138                 case WLAN_FC_TYPE_DATA:
3139                         ap_tx_status(wpa_s, data->tx_status.dst,
3140                                      data->tx_status.data,
3141                                      data->tx_status.data_len,
3142                                      data->tx_status.ack);
3143                         break;
3144                 }
3145 #endif /* CONFIG_AP */
3146                 break;
3147 #ifdef CONFIG_AP
3148         case EVENT_EAPOL_TX_STATUS:
3149                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3150                                    data->eapol_tx_status.data,
3151                                    data->eapol_tx_status.data_len,
3152                                    data->eapol_tx_status.ack);
3153                 break;
3154         case EVENT_DRIVER_CLIENT_POLL_OK:
3155                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3156                 break;
3157         case EVENT_RX_FROM_UNKNOWN:
3158                 if (wpa_s->ap_iface == NULL)
3159                         break;
3160                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3161                                        data->rx_from_unknown.wds);
3162                 break;
3163         case EVENT_CH_SWITCH:
3164                 if (!data)
3165                         break;
3166                 if (!wpa_s->ap_iface) {
3167                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3168                                 "event in non-AP mode");
3169                         break;
3170                 }
3171
3172                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3173                                   data->ch_switch.ht_enabled,
3174                                   data->ch_switch.ch_offset,
3175                                   data->ch_switch.ch_width,
3176                                   data->ch_switch.cf1,
3177                                   data->ch_switch.cf2);
3178                 break;
3179 #endif /* CONFIG_AP */
3180         case EVENT_RX_MGMT: {
3181                 u16 fc, stype;
3182                 const struct ieee80211_mgmt *mgmt;
3183
3184 #ifdef CONFIG_TESTING_OPTIONS
3185                 if (wpa_s->ext_mgmt_frame_handling) {
3186                         struct rx_mgmt *rx = &data->rx_mgmt;
3187                         size_t hex_len = 2 * rx->frame_len + 1;
3188                         char *hex = os_malloc(hex_len);
3189                         if (hex) {
3190                                 wpa_snprintf_hex(hex, hex_len,
3191                                                  rx->frame, rx->frame_len);
3192                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3193                                         rx->freq, rx->datarate, rx->ssi_signal,
3194                                         hex);
3195                                 os_free(hex);
3196                         }
3197                         break;
3198                 }
3199 #endif /* CONFIG_TESTING_OPTIONS */
3200
3201                 mgmt = (const struct ieee80211_mgmt *)
3202                         data->rx_mgmt.frame;
3203                 fc = le_to_host16(mgmt->frame_control);
3204                 stype = WLAN_FC_GET_STYPE(fc);
3205
3206 #ifdef CONFIG_AP
3207                 if (wpa_s->ap_iface == NULL) {
3208 #endif /* CONFIG_AP */
3209 #ifdef CONFIG_P2P
3210                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3211                             data->rx_mgmt.frame_len > 24) {
3212                                 const u8 *src = mgmt->sa;
3213                                 const u8 *ie = mgmt->u.probe_req.variable;
3214                                 size_t ie_len = data->rx_mgmt.frame_len -
3215                                         (mgmt->u.probe_req.variable -
3216                                          data->rx_mgmt.frame);
3217                                 wpas_p2p_probe_req_rx(
3218                                         wpa_s, src, mgmt->da,
3219                                         mgmt->bssid, ie, ie_len,
3220                                         data->rx_mgmt.ssi_signal);
3221                                 break;
3222                         }
3223 #endif /* CONFIG_P2P */
3224 #ifdef CONFIG_IBSS_RSN
3225                         if (stype == WLAN_FC_STYPE_AUTH &&
3226                             data->rx_mgmt.frame_len >= 30) {
3227                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3228                                 break;
3229                         }
3230 #endif /* CONFIG_IBSS_RSN */
3231
3232                         if (stype == WLAN_FC_STYPE_ACTION) {
3233                                 wpas_event_rx_mgmt_action(
3234                                         wpa_s, data->rx_mgmt.frame,
3235                                         data->rx_mgmt.frame_len,
3236                                         data->rx_mgmt.freq);
3237                                 break;
3238                         }
3239
3240                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3241                                 "management frame in non-AP mode");
3242                         break;
3243 #ifdef CONFIG_AP
3244                 }
3245
3246                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3247                     data->rx_mgmt.frame_len > 24) {
3248                         const u8 *ie = mgmt->u.probe_req.variable;
3249                         size_t ie_len = data->rx_mgmt.frame_len -
3250                                 (mgmt->u.probe_req.variable -
3251                                  data->rx_mgmt.frame);
3252
3253                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3254                                          mgmt->bssid, ie, ie_len,
3255                                          data->rx_mgmt.ssi_signal);
3256                 }
3257
3258                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3259 #endif /* CONFIG_AP */
3260                 break;
3261                 }
3262         case EVENT_RX_PROBE_REQ:
3263                 if (data->rx_probe_req.sa == NULL ||
3264                     data->rx_probe_req.ie == NULL)
3265                         break;
3266 #ifdef CONFIG_AP
3267                 if (wpa_s->ap_iface) {
3268                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3269                                              data->rx_probe_req.sa,
3270                                              data->rx_probe_req.da,
3271                                              data->rx_probe_req.bssid,
3272                                              data->rx_probe_req.ie,
3273                                              data->rx_probe_req.ie_len,
3274                                              data->rx_probe_req.ssi_signal);
3275                         break;
3276                 }
3277 #endif /* CONFIG_AP */
3278                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3279                                       data->rx_probe_req.da,
3280                                       data->rx_probe_req.bssid,
3281                                       data->rx_probe_req.ie,
3282                                       data->rx_probe_req.ie_len,
3283                                       data->rx_probe_req.ssi_signal);
3284                 break;
3285         case EVENT_REMAIN_ON_CHANNEL:
3286 #ifdef CONFIG_OFFCHANNEL
3287                 offchannel_remain_on_channel_cb(
3288                         wpa_s, data->remain_on_channel.freq,
3289                         data->remain_on_channel.duration);
3290 #endif /* CONFIG_OFFCHANNEL */
3291                 wpas_p2p_remain_on_channel_cb(
3292                         wpa_s, data->remain_on_channel.freq,
3293                         data->remain_on_channel.duration);
3294                 break;
3295         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3296 #ifdef CONFIG_OFFCHANNEL
3297                 offchannel_cancel_remain_on_channel_cb(
3298                         wpa_s, data->remain_on_channel.freq);
3299 #endif /* CONFIG_OFFCHANNEL */
3300                 wpas_p2p_cancel_remain_on_channel_cb(
3301                         wpa_s, data->remain_on_channel.freq);
3302                 break;
3303         case EVENT_EAPOL_RX:
3304                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3305                                         data->eapol_rx.data,
3306                                         data->eapol_rx.data_len);
3307                 break;
3308         case EVENT_SIGNAL_CHANGE:
3309                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3310                         "above=%d signal=%d noise=%d txrate=%d",
3311                         data->signal_change.above_threshold,
3312                         data->signal_change.current_signal,
3313                         data->signal_change.current_noise,
3314                         data->signal_change.current_txrate);
3315                 bgscan_notify_signal_change(
3316                         wpa_s, data->signal_change.above_threshold,
3317                         data->signal_change.current_signal,
3318                         data->signal_change.current_noise,
3319                         data->signal_change.current_txrate);
3320                 break;
3321         case EVENT_INTERFACE_ENABLED:
3322                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3323                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3324                         wpa_supplicant_update_mac_addr(wpa_s);
3325                         if (wpa_s->p2p_mgmt) {
3326                                 wpa_supplicant_set_state(wpa_s,
3327                                                          WPA_DISCONNECTED);
3328                                 break;
3329                         }
3330
3331 #ifdef CONFIG_AP
3332                         if (!wpa_s->ap_iface) {
3333                                 wpa_supplicant_set_state(wpa_s,
3334                                                          WPA_DISCONNECTED);
3335                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3336                         } else
3337                                 wpa_supplicant_set_state(wpa_s,
3338                                                          WPA_COMPLETED);
3339 #else /* CONFIG_AP */
3340                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3341                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3342 #endif /* CONFIG_AP */
3343                 }
3344                 break;
3345         case EVENT_INTERFACE_DISABLED:
3346                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3347 #ifdef CONFIG_P2P
3348                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3349                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3350                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3351                         /*
3352                          * The interface was externally disabled. Remove
3353                          * it assuming an external entity will start a
3354                          * new session if needed.
3355                          */
3356                         wpas_p2p_disconnect(wpa_s);
3357                         break;
3358                 }
3359                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3360                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3361                         /* This radio work will be cancelled, so clear P2P
3362                          * state as well.
3363                          */
3364                         p2p_stop_find(wpa_s->global->p2p);
3365                 }
3366 #endif /* CONFIG_P2P */
3367
3368                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3369                         /*
3370                          * Indicate disconnection to keep ctrl_iface events
3371                          * consistent.
3372                          */
3373                         wpa_supplicant_event_disassoc(
3374                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3375                 }
3376                 wpa_supplicant_mark_disassoc(wpa_s);
3377                 radio_remove_works(wpa_s, NULL, 0);
3378
3379                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3380                 break;
3381         case EVENT_CHANNEL_LIST_CHANGED:
3382                 wpa_supplicant_update_channel_list(
3383                         wpa_s, &data->channel_list_changed);
3384                 break;
3385         case EVENT_INTERFACE_UNAVAILABLE:
3386                 wpas_p2p_interface_unavailable(wpa_s);
3387                 break;
3388         case EVENT_BEST_CHANNEL:
3389                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3390                         "(%d %d %d)",
3391                         data->best_chan.freq_24, data->best_chan.freq_5,
3392                         data->best_chan.freq_overall);
3393                 wpa_s->best_24_freq = data->best_chan.freq_24;
3394                 wpa_s->best_5_freq = data->best_chan.freq_5;
3395                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3396                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3397                                               data->best_chan.freq_5,
3398                                               data->best_chan.freq_overall);
3399                 break;
3400         case EVENT_UNPROT_DEAUTH:
3401                 wpa_supplicant_event_unprot_deauth(wpa_s,
3402                                                    &data->unprot_deauth);
3403                 break;
3404         case EVENT_UNPROT_DISASSOC:
3405                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3406                                                      &data->unprot_disassoc);
3407                 break;
3408         case EVENT_STATION_LOW_ACK:
3409 #ifdef CONFIG_AP
3410                 if (wpa_s->ap_iface && data)
3411                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3412                                                   data->low_ack.addr);
3413 #endif /* CONFIG_AP */
3414 #ifdef CONFIG_TDLS
3415                 if (data)
3416                         wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3417                                                           data->low_ack.addr);
3418 #endif /* CONFIG_TDLS */
3419                 break;
3420         case EVENT_IBSS_PEER_LOST:
3421 #ifdef CONFIG_IBSS_RSN
3422                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3423 #endif /* CONFIG_IBSS_RSN */
3424                 break;
3425         case EVENT_DRIVER_GTK_REKEY:
3426                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3427                               wpa_s->bssid, ETH_ALEN))
3428                         break;
3429                 if (!wpa_s->wpa)
3430                         break;
3431                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3432                                          data->driver_gtk_rekey.replay_ctr);
3433                 break;
3434         case EVENT_SCHED_SCAN_STOPPED:
3435                 wpa_s->pno = 0;
3436                 wpa_s->sched_scanning = 0;
3437                 wpa_supplicant_notify_scanning(wpa_s, 0);
3438
3439                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3440                         break;
3441
3442                 /*
3443                  * Start a new sched scan to continue searching for more SSIDs
3444                  * either if timed out or PNO schedule scan is pending.
3445                  */
3446                 if (wpa_s->sched_scan_timed_out) {
3447                         wpa_supplicant_req_sched_scan(wpa_s);
3448                 } else if (wpa_s->pno_sched_pending) {
3449                         wpa_s->pno_sched_pending = 0;
3450                         wpas_start_pno(wpa_s);
3451                 }
3452
3453                 break;
3454         case EVENT_WPS_BUTTON_PUSHED:
3455 #ifdef CONFIG_WPS
3456                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3457 #endif /* CONFIG_WPS */
3458                 break;
3459         case EVENT_AVOID_FREQUENCIES:
3460                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3461                 break;
3462         case EVENT_CONNECT_FAILED_REASON:
3463 #ifdef CONFIG_AP
3464                 if (!wpa_s->ap_iface || !data)
3465                         break;
3466                 hostapd_event_connect_failed_reason(
3467                         wpa_s->ap_iface->bss[0],
3468                         data->connect_failed_reason.addr,
3469                         data->connect_failed_reason.code);
3470 #endif /* CONFIG_AP */
3471                 break;
3472         default:
3473                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3474                 break;
3475         }
3476 }