wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2015, 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 "fst/fst.h"
  27 #include "wnm_sta.h"
  28 #include "notify.h"
  29 #include "common/ieee802_11_defs.h"
  30 #include "common/ieee802_11_common.h"
  31 #include "crypto/random.h"
  32 #include "blacklist.h"
  33 #include "wpas_glue.h"
  34 #include "wps_supplicant.h"
  35 #include "ibss_rsn.h"
  36 #include "sme.h"
  37 #include "gas_query.h"
  38 #include "p2p_supplicant.h"
  39 #include "bgscan.h"
  40 #include "autoscan.h"
  41 #include "ap.h"
  42 #include "bss.h"
  43 #include "scan.h"
  44 #include "offchannel.h"
  45 #include "interworking.h"
  46 #include "mesh.h"
  47 #include "mesh_mpm.h"
  48 #include "wmm_ac.h"
  49
  50
  51 #ifndef CONFIG_NO_SCAN_PROCESSING
  52 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  53                                               int new_scan, int own_request);
  54 #endif /* CONFIG_NO_SCAN_PROCESSING */
  55
  56
  57 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  58                               struct wpa_ssid *ssid)
  59 {
  60         struct os_reltime now;
  61
  62         if (ssid == NULL || ssid->disabled_until.sec == 0)
  63                 return 0;
  64
  65         os_get_reltime(&now);
  66         if (ssid->disabled_until.sec > now.sec)
  67                 return ssid->disabled_until.sec - now.sec;
  68
  69         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  70
  71         return 0;
  72 }
  73
  74
  75 #ifndef CONFIG_NO_SCAN_PROCESSING
  76 /**
  77  * wpas_reenabled_network_time - Time until first network is re-enabled
  78  * @wpa_s: Pointer to wpa_supplicant data
  79  * Returns: If all enabled networks are temporarily disabled, returns the time
  80  *      (in sec) until the first network is re-enabled. Otherwise returns 0.
  81  *
  82  * This function is used in case all enabled networks are temporarily disabled,
  83  * in which case it returns the time (in sec) that the first network will be
  84  * re-enabled. The function assumes that at least one network is enabled.
  85  */
  86 static int wpas_reenabled_network_time(struct wpa_supplicant *wpa_s)
  87 {
  88         struct wpa_ssid *ssid;
  89         int disabled_for, res = 0;
  90
  91 #ifdef CONFIG_INTERWORKING
  92         if (wpa_s->conf->auto_interworking && wpa_s->conf->interworking &&
  93             wpa_s->conf->cred)
  94                 return 0;
  95 #endif /* CONFIG_INTERWORKING */
  96
  97         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
  98                 if (ssid->disabled)
  99                         continue;
 100
 101                 disabled_for = wpas_temp_disabled(wpa_s, ssid);
 102                 if (!disabled_for)
 103                         return 0;
 104
 105                 if (!res || disabled_for < res)
 106                         res = disabled_for;
 107         }
 108
 109         return res;
 110 }
 111 #endif /* CONFIG_NO_SCAN_PROCESSING */
 112
 113
 114 void wpas_network_reenabled(void *eloop_ctx, void *timeout_ctx)
 115 {
 116         struct wpa_supplicant *wpa_s = eloop_ctx;
 117
 118         if (wpa_s->disconnected || wpa_s->wpa_state != WPA_SCANNING)
 119                 return;
 120
 121         wpa_dbg(wpa_s, MSG_DEBUG,
 122                 "Try to associate due to network getting re-enabled");
 123         if (wpa_supplicant_fast_associate(wpa_s) != 1) {
 124                 wpa_supplicant_cancel_sched_scan(wpa_s);
 125                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 126         }
 127 }
 128
 129
 130 static struct wpa_bss * wpa_supplicant_get_new_bss(
 131         struct wpa_supplicant *wpa_s, const u8 *bssid)
 132 {
 133         struct wpa_bss *bss = NULL;
 134         struct wpa_ssid *ssid = wpa_s->current_ssid;
 135
 136         if (ssid->ssid_len > 0)
 137                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
 138         if (!bss)
 139                 bss = wpa_bss_get_bssid(wpa_s, bssid);
 140
 141         return bss;
 142 }
 143
 144
 145 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
 146 {
 147         struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 148
 149         if (!bss) {
 150                 wpa_supplicant_update_scan_results(wpa_s);
 151
 152                 /* Get the BSS from the new scan results */
 153                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 154         }
 155
 156         if (bss)
 157                 wpa_s->current_bss = bss;
 158 }
 159
 160
 161 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
 162 {
 163         struct wpa_ssid *ssid, *old_ssid;
 164         u8 drv_ssid[SSID_MAX_LEN];
 165         size_t drv_ssid_len;
 166         int res;
 167
 168         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
 169                 wpa_supplicant_update_current_bss(wpa_s);
 170
 171                 if (wpa_s->current_ssid->ssid_len == 0)
 172                         return 0; /* current profile still in use */
 173                 res = wpa_drv_get_ssid(wpa_s, drv_ssid);
 174                 if (res < 0) {
 175                         wpa_msg(wpa_s, MSG_INFO,
 176                                 "Failed to read SSID from driver");
 177                         return 0; /* try to use current profile */
 178                 }
 179                 drv_ssid_len = res;
 180
 181                 if (drv_ssid_len == wpa_s->current_ssid->ssid_len &&
 182                     os_memcmp(drv_ssid, wpa_s->current_ssid->ssid,
 183                               drv_ssid_len) == 0)
 184                         return 0; /* current profile still in use */
 185
 186                 wpa_msg(wpa_s, MSG_DEBUG,
 187                         "Driver-initiated BSS selection changed the SSID to %s",
 188                         wpa_ssid_txt(drv_ssid, drv_ssid_len));
 189                 /* continue selecting a new network profile */
 190         }
 191
 192         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
 193                 "information");
 194         ssid = wpa_supplicant_get_ssid(wpa_s);
 195         if (ssid == NULL) {
 196                 wpa_msg(wpa_s, MSG_INFO,
 197                         "No network configuration found for the current AP");
 198                 return -1;
 199         }
 200
 201         if (wpas_network_disabled(wpa_s, ssid)) {
 202                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 203                 return -1;
 204         }
 205
 206         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 207             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 208                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 209                 return -1;
 210         }
 211
 212         res = wpas_temp_disabled(wpa_s, ssid);
 213         if (res > 0) {
 214                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 215                         "disabled for %d second(s)", res);
 216                 return -1;
 217         }
 218
 219         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 220                 "current AP");
 221         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 222                 u8 wpa_ie[80];
 223                 size_t wpa_ie_len = sizeof(wpa_ie);
 224                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 225                                               wpa_ie, &wpa_ie_len) < 0)
 226                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 227         } else {
 228                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 229         }
 230
 231         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 232                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 233         old_ssid = wpa_s->current_ssid;
 234         wpa_s->current_ssid = ssid;
 235
 236         wpa_supplicant_update_current_bss(wpa_s);
 237
 238         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 239         wpa_supplicant_initiate_eapol(wpa_s);
 240         if (old_ssid != wpa_s->current_ssid)
 241                 wpas_notify_network_changed(wpa_s);
 242
 243         return 0;
 244 }
 245
 246
 247 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 248 {
 249         struct wpa_supplicant *wpa_s = eloop_ctx;
 250
 251         if (wpa_s->countermeasures) {
 252                 wpa_s->countermeasures = 0;
 253                 wpa_drv_set_countermeasures(wpa_s, 0);
 254                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 255
 256                 /*
 257                  * It is possible that the device is sched scanning, which means
 258                  * that a connection attempt will be done only when we receive
 259                  * scan results. However, in this case, it would be preferable
 260                  * to scan and connect immediately, so cancel the sched_scan and
 261                  * issue a regular scan flow.
 262                  */
 263                 wpa_supplicant_cancel_sched_scan(wpa_s);
 264                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 265         }
 266 }
 267
 268
 269 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 270 {
 271         int bssid_changed;
 272
 273         wnm_bss_keep_alive_deinit(wpa_s);
 274
 275 #ifdef CONFIG_IBSS_RSN
 276         ibss_rsn_deinit(wpa_s->ibss_rsn);
 277         wpa_s->ibss_rsn = NULL;
 278 #endif /* CONFIG_IBSS_RSN */
 279
 280 #ifdef CONFIG_AP
 281         wpa_supplicant_ap_deinit(wpa_s);
 282 #endif /* CONFIG_AP */
 283
 284 #ifdef CONFIG_HS20
 285         /* Clear possibly configured frame filters */
 286         wpa_drv_configure_frame_filters(wpa_s, 0);
 287 #endif /* CONFIG_HS20 */
 288
 289         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 290                 return;
 291
 292         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 293         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 294         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 295         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 296         sme_clear_on_disassoc(wpa_s);
 297         wpa_s->current_bss = NULL;
 298         wpa_s->assoc_freq = 0;
 299
 300         if (bssid_changed)
 301                 wpas_notify_bssid_changed(wpa_s);
 302
 303         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 304         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 305         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 306                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 307         wpa_s->ap_ies_from_associnfo = 0;
 308         wpa_s->current_ssid = NULL;
 309         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 310         wpa_s->key_mgmt = 0;
 311
 312         wpas_rrm_reset(wpa_s);
 313         wpa_s->wnmsleep_used = 0;
 314 }
 315
 316
 317 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 318 {
 319         struct wpa_ie_data ie;
 320         int pmksa_set = -1;
 321         size_t i;
 322
 323         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 324             ie.pmkid == NULL)
 325                 return;
 326
 327         for (i = 0; i < ie.num_pmkid; i++) {
 328                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 329                                                     ie.pmkid + i * PMKID_LEN,
 330                                                     NULL, NULL, 0);
 331                 if (pmksa_set == 0) {
 332                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
 333                         break;
 334                 }
 335         }
 336
 337         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 338                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 339 }
 340
 341
 342 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 343                                                  union wpa_event_data *data)
 344 {
 345         if (data == NULL) {
 346                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 347                         "event");
 348                 return;
 349         }
 350         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 351                 " index=%d preauth=%d",
 352                 MAC2STR(data->pmkid_candidate.bssid),
 353                 data->pmkid_candidate.index,
 354                 data->pmkid_candidate.preauth);
 355
 356         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 357                             data->pmkid_candidate.index,
 358                             data->pmkid_candidate.preauth);
 359 }
 360
 361
 362 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 363 {
 364         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 365             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 366                 return 0;
 367
 368 #ifdef IEEE8021X_EAPOL
 369         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 370             wpa_s->current_ssid &&
 371             !(wpa_s->current_ssid->eapol_flags &
 372               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 373                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 374                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 375                  * plaintext or static WEP keys). */
 376                 return 0;
 377         }
 378 #endif /* IEEE8021X_EAPOL */
 379
 380         return 1;
 381 }
 382
 383
 384 /**
 385  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 386  * @wpa_s: pointer to wpa_supplicant data
 387  * @ssid: Configuration data for the network
 388  * Returns: 0 on success, -1 on failure
 389  *
 390  * This function is called when starting authentication with a network that is
 391  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 392  */
 393 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 394                               struct wpa_ssid *ssid)
 395 {
 396 #ifdef IEEE8021X_EAPOL
 397 #ifdef PCSC_FUNCS
 398         int aka = 0, sim = 0;
 399
 400         if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
 401             wpa_s->scard != NULL || wpa_s->conf->external_sim)
 402                 return 0;
 403
 404         if (ssid == NULL || ssid->eap.eap_methods == NULL) {
 405                 sim = 1;
 406                 aka = 1;
 407         } else {
 408                 struct eap_method_type *eap = ssid->eap.eap_methods;
 409                 while (eap->vendor != EAP_VENDOR_IETF ||
 410                        eap->method != EAP_TYPE_NONE) {
 411                         if (eap->vendor == EAP_VENDOR_IETF) {
 412                                 if (eap->method == EAP_TYPE_SIM)
 413                                         sim = 1;
 414                                 else if (eap->method == EAP_TYPE_AKA ||
 415                                          eap->method == EAP_TYPE_AKA_PRIME)
 416                                         aka = 1;
 417                         }
 418                         eap++;
 419                 }
 420         }
 421
 422         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 423                 sim = 0;
 424         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 425             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 426             NULL)
 427                 aka = 0;
 428
 429         if (!sim && !aka) {
 430                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 431                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 432                         "enabled");
 433                 return 0;
 434         }
 435
 436         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 437                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 438
 439         wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
 440         if (wpa_s->scard == NULL) {
 441                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 442                         "(pcsc-lite)");
 443                 return -1;
 444         }
 445         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 446         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 447 #endif /* PCSC_FUNCS */
 448 #endif /* IEEE8021X_EAPOL */
 449
 450         return 0;
 451 }
 452
 453
 454 #ifndef CONFIG_NO_SCAN_PROCESSING
 455
 456 static int has_wep_key(struct wpa_ssid *ssid)
 457 {
 458         int i;
 459
 460         for (i = 0; i < NUM_WEP_KEYS; i++) {
 461                 if (ssid->wep_key_len[i])
 462                         return 1;
 463         }
 464
 465         return 0;
 466 }
 467
 468
 469 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 470                                         struct wpa_ssid *ssid)
 471 {
 472         int privacy = 0;
 473
 474         if (ssid->mixed_cell)
 475                 return 1;
 476
 477 #ifdef CONFIG_WPS
 478         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 479                 return 1;
 480 #endif /* CONFIG_WPS */
 481
 482         if (has_wep_key(ssid))
 483                 privacy = 1;
 484
 485 #ifdef IEEE8021X_EAPOL
 486         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 487             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 488                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 489                 privacy = 1;
 490 #endif /* IEEE8021X_EAPOL */
 491
 492         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 493                 privacy = 1;
 494
 495         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 496                 privacy = 1;
 497
 498         if (bss->caps & IEEE80211_CAP_PRIVACY)
 499                 return privacy;
 500         return !privacy;
 501 }
 502
 503
 504 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 505                                          struct wpa_ssid *ssid,
 506                                          struct wpa_bss *bss)
 507 {
 508         struct wpa_ie_data ie;
 509         int proto_match = 0;
 510         const u8 *rsn_ie, *wpa_ie;
 511         int ret;
 512         int wep_ok;
 513
 514         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 515         if (ret >= 0)
 516                 return ret;
 517
 518         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 519         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 520                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 521                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 522                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 523
 524         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 525         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 526                 proto_match++;
 527
 528                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 529                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 530                                 "failed");
 531                         break;
 532                 }
 533
 534                 if (wep_ok &&
 535                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 536                 {
 537                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 538                                 "in RSN IE");
 539                         return 1;
 540                 }
 541
 542                 if (!(ie.proto & ssid->proto)) {
 543                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 544                                 "mismatch");
 545                         break;
 546                 }
 547
 548                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 549                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 550                                 "cipher mismatch");
 551                         break;
 552                 }
 553
 554                 if (!(ie.group_cipher & ssid->group_cipher)) {
 555                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 556                                 "cipher mismatch");
 557                         break;
 558                 }
 559
 560                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 561                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 562                                 "mismatch");
 563                         break;
 564                 }
 565
 566 #ifdef CONFIG_IEEE80211W
 567                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 568                     wpas_get_ssid_pmf(wpa_s, ssid) ==
 569                     MGMT_FRAME_PROTECTION_REQUIRED) {
 570                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 571                                 "frame protection");
 572                         break;
 573                 }
 574 #endif /* CONFIG_IEEE80211W */
 575                 if ((ie.capabilities & WPA_CAPABILITY_MFPR) &&
 576                     wpas_get_ssid_pmf(wpa_s, ssid) ==
 577                     NO_MGMT_FRAME_PROTECTION) {
 578                         wpa_dbg(wpa_s, MSG_DEBUG,
 579                                 "   skip RSN IE - no mgmt frame protection enabled but AP requires it");
 580                         break;
 581                 }
 582 #ifdef CONFIG_MBO
 583                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 584                     wpas_mbo_get_bss_attr(bss, MBO_ATTR_ID_AP_CAPA_IND) &&
 585                     wpas_get_ssid_pmf(wpa_s, ssid) !=
 586                     NO_MGMT_FRAME_PROTECTION) {
 587                         wpa_dbg(wpa_s, MSG_DEBUG,
 588                                 "   skip RSN IE - no mgmt frame protection enabled on MBO AP");
 589                         break;
 590                 }
 591 #endif /* CONFIG_MBO */
 592
 593                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 594                 return 1;
 595         }
 596
 597 #ifdef CONFIG_IEEE80211W
 598         if (wpas_get_ssid_pmf(wpa_s, ssid) == MGMT_FRAME_PROTECTION_REQUIRED) {
 599                 wpa_dbg(wpa_s, MSG_DEBUG,
 600                         "   skip - MFP Required but network not MFP Capable");
 601                 return 0;
 602         }
 603 #endif /* CONFIG_IEEE80211W */
 604
 605         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 606         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 607                 proto_match++;
 608
 609                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 610                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 611                                 "failed");
 612                         break;
 613                 }
 614
 615                 if (wep_ok &&
 616                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 617                 {
 618                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 619                                 "in WPA IE");
 620                         return 1;
 621                 }
 622
 623                 if (!(ie.proto & ssid->proto)) {
 624                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 625                                 "mismatch");
 626                         break;
 627                 }
 628
 629                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 630                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 631                                 "cipher mismatch");
 632                         break;
 633                 }
 634
 635                 if (!(ie.group_cipher & ssid->group_cipher)) {
 636                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 637                                 "cipher mismatch");
 638                         break;
 639                 }
 640
 641                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 642                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 643                                 "mismatch");
 644                         break;
 645                 }
 646
 647                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 648                 return 1;
 649         }
 650
 651         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 652             !rsn_ie) {
 653                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 654                 return 1;
 655         }
 656
 657         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 658             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 659                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 660                 return 0;
 661         }
 662
 663         if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
 664             wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
 665                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
 666                 return 1;
 667         }
 668
 669         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 670                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 671                 return 1;
 672         }
 673
 674         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 675                 "WPA/WPA2");
 676
 677         return 0;
 678 }
 679
 680
 681 static int freq_allowed(int *freqs, int freq)
 682 {
 683         int i;
 684
 685         if (freqs == NULL)
 686                 return 1;
 687
 688         for (i = 0; freqs[i]; i++)
 689                 if (freqs[i] == freq)
 690                         return 1;
 691         return 0;
 692 }
 693
 694
 695 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 696 {
 697         const struct hostapd_hw_modes *mode = NULL, *modes;
 698         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 699         const u8 *rate_ie;
 700         int i, j, k;
 701
 702         if (bss->freq == 0)
 703                 return 1; /* Cannot do matching without knowing band */
 704
 705         modes = wpa_s->hw.modes;
 706         if (modes == NULL) {
 707                 /*
 708                  * The driver does not provide any additional information
 709                  * about the utilized hardware, so allow the connection attempt
 710                  * to continue.
 711                  */
 712                 return 1;
 713         }
 714
 715         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 716                 for (j = 0; j < modes[i].num_channels; j++) {
 717                         int freq = modes[i].channels[j].freq;
 718                         if (freq == bss->freq) {
 719                                 if (mode &&
 720                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 721                                         break; /* do not allow 802.11b replace
 722                                                 * 802.11g */
 723                                 mode = &modes[i];
 724                                 break;
 725                         }
 726                 }
 727         }
 728
 729         if (mode == NULL)
 730                 return 0;
 731
 732         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 733                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 734                 if (rate_ie == NULL)
 735                         continue;
 736
 737                 for (j = 2; j < rate_ie[1] + 2; j++) {
 738                         int flagged = !!(rate_ie[j] & 0x80);
 739                         int r = (rate_ie[j] & 0x7f) * 5;
 740
 741                         /*
 742                          * IEEE Std 802.11n-2009 7.3.2.2:
 743                          * The new BSS Membership selector value is encoded
 744                          * like a legacy basic rate, but it is not a rate and
 745                          * only indicates if the BSS members are required to
 746                          * support the mandatory features of Clause 20 [HT PHY]
 747                          * in order to join the BSS.
 748                          */
 749                         if (flagged && ((rate_ie[j] & 0x7f) ==
 750                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 751                                 if (!ht_supported(mode)) {
 752                                         wpa_dbg(wpa_s, MSG_DEBUG,
 753                                                 "   hardware does not support "
 754                                                 "HT PHY");
 755                                         return 0;
 756                                 }
 757                                 continue;
 758                         }
 759
 760                         /* There's also a VHT selector for 802.11ac */
 761                         if (flagged && ((rate_ie[j] & 0x7f) ==
 762                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 763                                 if (!vht_supported(mode)) {
 764                                         wpa_dbg(wpa_s, MSG_DEBUG,
 765                                                 "   hardware does not support "
 766                                                 "VHT PHY");
 767                                         return 0;
 768                                 }
 769                                 continue;
 770                         }
 771
 772                         if (!flagged)
 773                                 continue;
 774
 775                         /* check for legacy basic rates */
 776                         for (k = 0; k < mode->num_rates; k++) {
 777                                 if (mode->rates[k] == r)
 778                                         break;
 779                         }
 780                         if (k == mode->num_rates) {
 781                                 /*
 782                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 783                                  * order to join a BSS all required rates
 784                                  * have to be supported by the hardware.
 785                                  */
 786                                 wpa_dbg(wpa_s, MSG_DEBUG,
 787                                         "   hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)",
 788                                         r / 10, r % 10,
 789                                         bss->freq, mode->mode, mode->num_rates);
 790                                 return 0;
 791                         }
 792                 }
 793         }
 794
 795         return 1;
 796 }
 797
 798
 799 /*
 800  * Test whether BSS is in an ESS.
 801  * This is done differently in DMG (60 GHz) and non-DMG bands
 802  */
 803 static int bss_is_ess(struct wpa_bss *bss)
 804 {
 805         if (bss_is_dmg(bss)) {
 806                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 807                         IEEE80211_CAP_DMG_AP;
 808         }
 809
 810         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 811                 IEEE80211_CAP_ESS);
 812 }
 813
 814
 815 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
 816 {
 817         size_t i;
 818
 819         for (i = 0; i < ETH_ALEN; i++) {
 820                 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
 821                         return 0;
 822         }
 823         return 1;
 824 }
 825
 826
 827 static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
 828 {
 829         size_t i;
 830
 831         for (i = 0; i < num; i++) {
 832                 const u8 *a = list + i * ETH_ALEN * 2;
 833                 const u8 *m = a + ETH_ALEN;
 834
 835                 if (match_mac_mask(a, addr, m))
 836                         return 1;
 837         }
 838         return 0;
 839 }
 840
 841
 842 struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 843                                      int i, struct wpa_bss *bss,
 844                                      struct wpa_ssid *group,
 845                                      int only_first_ssid)
 846 {
 847         u8 wpa_ie_len, rsn_ie_len;
 848         int wpa;
 849         struct wpa_blacklist *e;
 850         const u8 *ie;
 851         struct wpa_ssid *ssid;
 852         int osen;
 853 #ifdef CONFIG_MBO
 854         const u8 *assoc_disallow;
 855 #endif /* CONFIG_MBO */
 856
 857         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 858         wpa_ie_len = ie ? ie[1] : 0;
 859
 860         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 861         rsn_ie_len = ie ? ie[1] : 0;
 862
 863         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 864         osen = ie != NULL;
 865
 866         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 867                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d freq=%d %s%s%s",
 868                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 869                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level, bss->freq,
 870                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 871                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 872                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 873                 " p2p" : "",
 874                 osen ? " osen=1" : "");
 875
 876         e = wpa_blacklist_get(wpa_s, bss->bssid);
 877         if (e) {
 878                 int limit = 1;
 879                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 880                         /*
 881                          * When only a single network is enabled, we can
 882                          * trigger blacklisting on the first failure. This
 883                          * should not be done with multiple enabled networks to
 884                          * avoid getting forced to move into a worse ESS on
 885                          * single error if there are no other BSSes of the
 886                          * current ESS.
 887                          */
 888                         limit = 0;
 889                 }
 890                 if (e->count > limit) {
 891                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 892                                 "(count=%d limit=%d)", e->count, limit);
 893                         return NULL;
 894                 }
 895         }
 896
 897         if (bss->ssid_len == 0) {
 898                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 899                 return NULL;
 900         }
 901
 902         if (disallowed_bssid(wpa_s, bss->bssid)) {
 903                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 904                 return NULL;
 905         }
 906
 907         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 908                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 909                 return NULL;
 910         }
 911
 912         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 913
 914         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 915                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 916                 int res;
 917
 918                 if (wpas_network_disabled(wpa_s, ssid)) {
 919                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 920                         continue;
 921                 }
 922
 923                 res = wpas_temp_disabled(wpa_s, ssid);
 924                 if (res > 0) {
 925                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 926                                 "temporarily for %d second(s)", res);
 927                         continue;
 928                 }
 929
 930 #ifdef CONFIG_WPS
 931                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 932                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 933                                 "(WPS)");
 934                         continue;
 935                 }
 936
 937                 if (wpa && ssid->ssid_len == 0 &&
 938                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 939                         check_ssid = 0;
 940
 941                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 942                         /* Only allow wildcard SSID match if an AP
 943                          * advertises active WPS operation that matches
 944                          * with our mode. */
 945                         check_ssid = 1;
 946                         if (ssid->ssid_len == 0 &&
 947                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 948                                 check_ssid = 0;
 949                 }
 950 #endif /* CONFIG_WPS */
 951
 952                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 953                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 954                         check_ssid = 0;
 955
 956                 if (check_ssid &&
 957                     (bss->ssid_len != ssid->ssid_len ||
 958                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 959                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 960                         continue;
 961                 }
 962
 963                 if (ssid->bssid_set &&
 964                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 965                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 966                         continue;
 967                 }
 968
 969                 /* check blacklist */
 970                 if (ssid->num_bssid_blacklist &&
 971                     addr_in_list(bss->bssid, ssid->bssid_blacklist,
 972                                  ssid->num_bssid_blacklist)) {
 973                         wpa_dbg(wpa_s, MSG_DEBUG,
 974                                 "   skip - BSSID blacklisted");
 975                         continue;
 976                 }
 977
 978                 /* if there is a whitelist, only accept those APs */
 979                 if (ssid->num_bssid_whitelist &&
 980                     !addr_in_list(bss->bssid, ssid->bssid_whitelist,
 981                                   ssid->num_bssid_whitelist)) {
 982                         wpa_dbg(wpa_s, MSG_DEBUG,
 983                                 "   skip - BSSID not in whitelist");
 984                         continue;
 985                 }
 986
 987                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 988                         continue;
 989
 990                 if (!osen && !wpa &&
 991                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 992                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 993                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 994                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 995                                 "not allowed");
 996                         continue;
 997                 }
 998
 999                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
1000                     has_wep_key(ssid)) {
1001                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
1002                         continue;
1003                 }
1004
1005                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
1006                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
1007                                 "not allowed");
1008                         continue;
1009                 }
1010
1011                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
1012                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
1013                                 "mismatch");
1014                         continue;
1015                 }
1016
1017                 if (ssid->mode != IEEE80211_MODE_MESH && !bss_is_ess(bss) &&
1018                     !bss_is_pbss(bss)) {
1019                         wpa_dbg(wpa_s, MSG_DEBUG,
1020                                 "   skip - not ESS, PBSS, or MBSS");
1021                         continue;
1022                 }
1023
1024                 if (ssid->pbss != 2 && ssid->pbss != bss_is_pbss(bss)) {
1025                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - PBSS mismatch (ssid %d bss %d)",
1026                                 ssid->pbss, bss_is_pbss(bss));
1027                         continue;
1028                 }
1029
1030                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
1031                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
1032                                 "allowed");
1033                         continue;
1034                 }
1035
1036 #ifdef CONFIG_MESH
1037                 if (ssid->mode == IEEE80211_MODE_MESH && ssid->frequency > 0 &&
1038                     ssid->frequency != bss->freq) {
1039                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not allowed (mesh)");
1040                         continue;
1041                 }
1042 #endif /* CONFIG_MESH */
1043
1044                 if (!rate_match(wpa_s, bss)) {
1045                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
1046                                 "not match");
1047                         continue;
1048                 }
1049
1050 #ifdef CONFIG_P2P
1051                 if (ssid->p2p_group &&
1052                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
1053                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
1054                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
1055                         continue;
1056                 }
1057
1058                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
1059                         struct wpabuf *p2p_ie;
1060                         u8 dev_addr[ETH_ALEN];
1061
1062                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
1063                         if (ie == NULL) {
1064                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
1065                                 continue;
1066                         }
1067                         p2p_ie = wpa_bss_get_vendor_ie_multi(
1068                                 bss, P2P_IE_VENDOR_TYPE);
1069                         if (p2p_ie == NULL) {
1070                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
1071                                 continue;
1072                         }
1073
1074                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
1075                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
1076                                          ETH_ALEN) != 0) {
1077                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
1078                                 wpabuf_free(p2p_ie);
1079                                 continue;
1080                         }
1081                         wpabuf_free(p2p_ie);
1082                 }
1083
1084                 /*
1085                  * TODO: skip the AP if its P2P IE has Group Formation
1086                  * bit set in the P2P Group Capability Bitmap and we
1087                  * are not in Group Formation with that device.
1088                  */
1089 #endif /* CONFIG_P2P */
1090
1091                 if (os_reltime_before(&bss->last_update, &wpa_s->scan_min_time))
1092                 {
1093                         struct os_reltime diff;
1094
1095                         os_reltime_sub(&wpa_s->scan_min_time,
1096                                        &bss->last_update, &diff);
1097                         wpa_dbg(wpa_s, MSG_DEBUG,
1098                                 "   skip - scan result not recent enough (%u.%06u seconds too old)",
1099                                 (unsigned int) diff.sec,
1100                                 (unsigned int) diff.usec);
1101                         continue;
1102                 }
1103 #ifdef CONFIG_MBO
1104                 assoc_disallow = wpas_mbo_get_bss_attr(
1105                         bss, MBO_ATTR_ID_ASSOC_DISALLOW);
1106                 if (assoc_disallow && assoc_disallow[1] >= 1) {
1107                         wpa_dbg(wpa_s, MSG_DEBUG,
1108                                 "   skip - MBO association disallowed (reason %u)",
1109                                 assoc_disallow[2]);
1110                         continue;
1111                 }
1112
1113                 if (wpa_is_bss_tmp_disallowed(wpa_s, bss->bssid)) {
1114                         wpa_dbg(wpa_s, MSG_DEBUG,
1115                                 "   skip - MBO retry delay has not passed yet");
1116                         continue;
1117                 }
1118 #endif /* CONFIG_MBO */
1119
1120                 /* Matching configuration found */
1121                 return ssid;
1122         }
1123
1124         /* No matching configuration found */
1125         return NULL;
1126 }
1127
1128
1129 static struct wpa_bss *
1130 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
1131                           struct wpa_ssid *group,
1132                           struct wpa_ssid **selected_ssid,
1133                           int only_first_ssid)
1134 {
1135         unsigned int i;
1136
1137         if (only_first_ssid)
1138                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
1139                         group->id);
1140         else
1141                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
1142                         group->priority);
1143
1144         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
1145                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
1146                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
1147                                                     only_first_ssid);
1148                 if (!*selected_ssid)
1149                         continue;
1150                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
1151                         " ssid='%s'",
1152                         MAC2STR(bss->bssid),
1153                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
1154                 return bss;
1155         }
1156
1157         return NULL;
1158 }
1159
1160
1161 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1162                                              struct wpa_ssid **selected_ssid)
1163 {
1164         struct wpa_bss *selected = NULL;
1165         int prio;
1166         struct wpa_ssid *next_ssid = NULL;
1167         struct wpa_ssid *ssid;
1168
1169         if (wpa_s->last_scan_res == NULL ||
1170             wpa_s->last_scan_res_used == 0)
1171                 return NULL; /* no scan results from last update */
1172
1173         if (wpa_s->next_ssid) {
1174                 /* check that next_ssid is still valid */
1175                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1176                         if (ssid == wpa_s->next_ssid)
1177                                 break;
1178                 }
1179                 next_ssid = ssid;
1180                 wpa_s->next_ssid = NULL;
1181         }
1182
1183         while (selected == NULL) {
1184                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1185                         if (next_ssid && next_ssid->priority ==
1186                             wpa_s->conf->pssid[prio]->priority) {
1187                                 selected = wpa_supplicant_select_bss(
1188                                         wpa_s, next_ssid, selected_ssid, 1);
1189                                 if (selected)
1190                                         break;
1191                         }
1192                         selected = wpa_supplicant_select_bss(
1193                                 wpa_s, wpa_s->conf->pssid[prio],
1194                                 selected_ssid, 0);
1195                         if (selected)
1196                                 break;
1197                 }
1198
1199                 if (selected == NULL && wpa_s->blacklist &&
1200                     !wpa_s->countermeasures) {
1201                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1202                                 "blacklist and try again");
1203                         wpa_blacklist_clear(wpa_s);
1204                         wpa_s->blacklist_cleared++;
1205                 } else if (selected == NULL)
1206                         break;
1207         }
1208
1209         ssid = *selected_ssid;
1210         if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set &&
1211             !ssid->passphrase && !ssid->ext_psk) {
1212                 const char *field_name, *txt = NULL;
1213
1214                 wpa_dbg(wpa_s, MSG_DEBUG,
1215                         "PSK/passphrase not yet available for the selected network");
1216
1217                 wpas_notify_network_request(wpa_s, ssid,
1218                                             WPA_CTRL_REQ_PSK_PASSPHRASE, NULL);
1219
1220                 field_name = wpa_supplicant_ctrl_req_to_string(
1221                         WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt);
1222                 if (field_name == NULL)
1223                         return NULL;
1224
1225                 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
1226
1227                 selected = NULL;
1228         }
1229
1230         return selected;
1231 }
1232
1233
1234 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1235                                         int timeout_sec, int timeout_usec)
1236 {
1237         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1238                 /*
1239                  * No networks are enabled; short-circuit request so
1240                  * we don't wait timeout seconds before transitioning
1241                  * to INACTIVE state.
1242                  */
1243                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1244                         "since there are no enabled networks");
1245                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1246                 return;
1247         }
1248
1249         wpa_s->scan_for_connection = 1;
1250         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1251 }
1252
1253
1254 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1255                            struct wpa_bss *selected,
1256                            struct wpa_ssid *ssid)
1257 {
1258         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1259                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1260                         "PBC session overlap");
1261                 wpas_notify_wps_event_pbc_overlap(wpa_s);
1262 #ifdef CONFIG_P2P
1263                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1264                     wpa_s->p2p_in_provisioning) {
1265                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1266                                                wpa_s, NULL);
1267                         return -1;
1268                 }
1269 #endif /* CONFIG_P2P */
1270
1271 #ifdef CONFIG_WPS
1272                 wpas_wps_pbc_overlap(wpa_s);
1273                 wpas_wps_cancel(wpa_s);
1274 #endif /* CONFIG_WPS */
1275                 return -1;
1276         }
1277
1278         wpa_msg(wpa_s, MSG_DEBUG,
1279                 "Considering connect request: reassociate: %d  selected: "
1280                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1281                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1282                 wpa_s->reassociate, MAC2STR(selected->bssid),
1283                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1284                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1285                 ssid, wpa_s->current_ssid);
1286
1287         /*
1288          * Do not trigger new association unless the BSSID has changed or if
1289          * reassociation is requested. If we are in process of associating with
1290          * the selected BSSID, do not trigger new attempt.
1291          */
1292         if (wpa_s->reassociate ||
1293             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1294              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1295                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1296               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1297                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1298                0) ||
1299               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1300                ssid != wpa_s->current_ssid)))) {
1301                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1302                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1303                         return 0;
1304                 }
1305                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1306                         MAC2STR(selected->bssid));
1307                 wpa_supplicant_associate(wpa_s, selected, ssid);
1308         } else {
1309                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1310                         "connect with the selected AP");
1311         }
1312
1313         return 0;
1314 }
1315
1316
1317 static struct wpa_ssid *
1318 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1319 {
1320         int prio;
1321         struct wpa_ssid *ssid;
1322
1323         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1324                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1325                 {
1326                         if (wpas_network_disabled(wpa_s, ssid))
1327                                 continue;
1328                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1329                             ssid->mode == IEEE80211_MODE_AP ||
1330                             ssid->mode == IEEE80211_MODE_MESH)
1331                                 return ssid;
1332                 }
1333         }
1334         return NULL;
1335 }
1336
1337
1338 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1339  * on BSS added and BSS changed events */
1340 static void wpa_supplicant_rsn_preauth_scan_results(
1341         struct wpa_supplicant *wpa_s)
1342 {
1343         struct wpa_bss *bss;
1344
1345         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1346                 return;
1347
1348         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1349                 const u8 *ssid, *rsn;
1350
1351                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1352                 if (ssid == NULL)
1353                         continue;
1354
1355                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1356                 if (rsn == NULL)
1357                         continue;
1358
1359                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1360         }
1361
1362 }
1363
1364
1365 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1366                                        struct wpa_bss *selected,
1367                                        struct wpa_ssid *ssid)
1368 {
1369         struct wpa_bss *current_bss = NULL;
1370 #ifndef CONFIG_NO_ROAMING
1371         int min_diff;
1372         int to_5ghz;
1373 #endif /* CONFIG_NO_ROAMING */
1374
1375         if (wpa_s->reassociate)
1376                 return 1; /* explicit request to reassociate */
1377         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1378                 return 1; /* we are not associated; continue */
1379         if (wpa_s->current_ssid == NULL)
1380                 return 1; /* unknown current SSID */
1381         if (wpa_s->current_ssid != ssid)
1382                 return 1; /* different network block */
1383
1384         if (wpas_driver_bss_selection(wpa_s))
1385                 return 0; /* Driver-based roaming */
1386
1387         if (wpa_s->current_ssid->ssid)
1388                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1389                                           wpa_s->current_ssid->ssid,
1390                                           wpa_s->current_ssid->ssid_len);
1391         if (!current_bss)
1392                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1393
1394         if (!current_bss)
1395                 return 1; /* current BSS not seen in scan results */
1396
1397         if (current_bss == selected)
1398                 return 0;
1399
1400         if (selected->last_update_idx > current_bss->last_update_idx)
1401                 return 1; /* current BSS not seen in the last scan */
1402
1403 #ifndef CONFIG_NO_ROAMING
1404         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1405         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
1406                 " level=%d snr=%d est_throughput=%u",
1407                 MAC2STR(current_bss->bssid), current_bss->level,
1408                 current_bss->snr, current_bss->est_throughput);
1409         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
1410                 " level=%d snr=%d est_throughput=%u",
1411                 MAC2STR(selected->bssid), selected->level,
1412                 selected->snr, selected->est_throughput);
1413
1414         if (wpa_s->current_ssid->bssid_set &&
1415             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1416             0) {
1417                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1418                         "has preferred BSSID");
1419                 return 1;
1420         }
1421
1422         if (selected->est_throughput > current_bss->est_throughput + 5000) {
1423                 wpa_dbg(wpa_s, MSG_DEBUG,
1424                         "Allow reassociation - selected BSS has better estimated throughput");
1425                 return 1;
1426         }
1427
1428         to_5ghz = selected->freq > 4000 && current_bss->freq < 4000;
1429
1430         if (current_bss->level < 0 &&
1431             current_bss->level > selected->level + to_5ghz * 2) {
1432                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1433                         "signal level");
1434                 return 0;
1435         }
1436
1437         min_diff = 2;
1438         if (current_bss->level < 0) {
1439                 if (current_bss->level < -85)
1440                         min_diff = 1;
1441                 else if (current_bss->level < -80)
1442                         min_diff = 2;
1443                 else if (current_bss->level < -75)
1444                         min_diff = 3;
1445                 else if (current_bss->level < -70)
1446                         min_diff = 4;
1447                 else
1448                         min_diff = 5;
1449         }
1450         if (to_5ghz) {
1451                 /* Make it easier to move to 5 GHz band */
1452                 if (min_diff > 2)
1453                         min_diff -= 2;
1454                 else
1455                         min_diff = 0;
1456         }
1457         if (abs(current_bss->level - selected->level) < min_diff) {
1458                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1459                         "in signal level");
1460                 return 0;
1461         }
1462
1463         return 1;
1464 #else /* CONFIG_NO_ROAMING */
1465         return 0;
1466 #endif /* CONFIG_NO_ROAMING */
1467 }
1468
1469
1470 /* Return != 0 if no scan results could be fetched or if scan results should not
1471  * be shared with other virtual interfaces. */
1472 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1473                                               union wpa_event_data *data,
1474                                               int own_request)
1475 {
1476         struct wpa_scan_results *scan_res = NULL;
1477         int ret = 0;
1478         int ap = 0;
1479 #ifndef CONFIG_NO_RANDOM_POOL
1480         size_t i, num;
1481 #endif /* CONFIG_NO_RANDOM_POOL */
1482
1483 #ifdef CONFIG_AP
1484         if (wpa_s->ap_iface)
1485                 ap = 1;
1486 #endif /* CONFIG_AP */
1487
1488         wpa_supplicant_notify_scanning(wpa_s, 0);
1489
1490         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1491                                                    data ? &data->scan_info :
1492                                                    NULL, 1);
1493         if (scan_res == NULL) {
1494                 if (wpa_s->conf->ap_scan == 2 || ap ||
1495                     wpa_s->scan_res_handler == scan_only_handler)
1496                         return -1;
1497                 if (!own_request)
1498                         return -1;
1499                 if (data && data->scan_info.external_scan)
1500                         return -1;
1501                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1502                         "scanning again");
1503                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1504                 ret = -1;
1505                 goto scan_work_done;
1506         }
1507
1508 #ifndef CONFIG_NO_RANDOM_POOL
1509         num = scan_res->num;
1510         if (num > 10)
1511                 num = 10;
1512         for (i = 0; i < num; i++) {
1513                 u8 buf[5];
1514                 struct wpa_scan_res *res = scan_res->res[i];
1515                 buf[0] = res->bssid[5];
1516                 buf[1] = res->qual & 0xff;
1517                 buf[2] = res->noise & 0xff;
1518                 buf[3] = res->level & 0xff;
1519                 buf[4] = res->tsf & 0xff;
1520                 random_add_randomness(buf, sizeof(buf));
1521         }
1522 #endif /* CONFIG_NO_RANDOM_POOL */
1523
1524         if (own_request && wpa_s->scan_res_handler &&
1525             !(data && data->scan_info.external_scan)) {
1526                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1527                                          struct wpa_scan_results *scan_res);
1528
1529                 scan_res_handler = wpa_s->scan_res_handler;
1530                 wpa_s->scan_res_handler = NULL;
1531                 scan_res_handler(wpa_s, scan_res);
1532                 ret = -2;
1533                 goto scan_work_done;
1534         }
1535
1536         if (ap) {
1537                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1538 #ifdef CONFIG_AP
1539                 if (wpa_s->ap_iface->scan_cb)
1540                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1541 #endif /* CONFIG_AP */
1542                 goto scan_work_done;
1543         }
1544
1545         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1546                 wpa_s->own_scan_running,
1547                 data ? data->scan_info.external_scan : 0);
1548         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1549             wpa_s->manual_scan_use_id && wpa_s->own_scan_running &&
1550             own_request && !(data && data->scan_info.external_scan)) {
1551                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1552                              wpa_s->manual_scan_id);
1553                 wpa_s->manual_scan_use_id = 0;
1554         } else {
1555                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1556         }
1557         wpas_notify_scan_results(wpa_s);
1558
1559         wpas_notify_scan_done(wpa_s, 1);
1560
1561         if (data && data->scan_info.external_scan) {
1562                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1563                 wpa_scan_results_free(scan_res);
1564                 return 0;
1565         }
1566
1567         if (wnm_scan_process(wpa_s, 1) > 0)
1568                 goto scan_work_done;
1569
1570         if (sme_proc_obss_scan(wpa_s) > 0)
1571                 goto scan_work_done;
1572
1573         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1574                 goto scan_work_done;
1575
1576         if (autoscan_notify_scan(wpa_s, scan_res))
1577                 goto scan_work_done;
1578
1579         if (wpa_s->disconnected) {
1580                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1581                 goto scan_work_done;
1582         }
1583
1584         if (!wpas_driver_bss_selection(wpa_s) &&
1585             bgscan_notify_scan(wpa_s, scan_res) == 1)
1586                 goto scan_work_done;
1587
1588         wpas_wps_update_ap_info(wpa_s, scan_res);
1589
1590         if (wpa_s->wpa_state >= WPA_AUTHENTICATING &&
1591             wpa_s->wpa_state < WPA_COMPLETED)
1592                 goto scan_work_done;
1593
1594         wpa_scan_results_free(scan_res);
1595
1596         if (own_request && wpa_s->scan_work) {
1597                 struct wpa_radio_work *work = wpa_s->scan_work;
1598                 wpa_s->scan_work = NULL;
1599                 radio_work_done(work);
1600         }
1601
1602         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1603
1604 scan_work_done:
1605         wpa_scan_results_free(scan_res);
1606         if (own_request && wpa_s->scan_work) {
1607                 struct wpa_radio_work *work = wpa_s->scan_work;
1608                 wpa_s->scan_work = NULL;
1609                 radio_work_done(work);
1610         }
1611         return ret;
1612 }
1613
1614
1615 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1616                                               int new_scan, int own_request)
1617 {
1618         struct wpa_bss *selected;
1619         struct wpa_ssid *ssid = NULL;
1620         int time_to_reenable = wpas_reenabled_network_time(wpa_s);
1621
1622         if (time_to_reenable > 0) {
1623                 wpa_dbg(wpa_s, MSG_DEBUG,
1624                         "Postpone network selection by %d seconds since all networks are disabled",
1625                         time_to_reenable);
1626                 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
1627                 eloop_register_timeout(time_to_reenable, 0,
1628                                        wpas_network_reenabled, wpa_s, NULL);
1629                 return 0;
1630         }
1631
1632         if (wpa_s->p2p_mgmt)
1633                 return 0; /* no normal connection on p2p_mgmt interface */
1634
1635         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1636
1637 #ifdef CONFIG_MESH
1638         if (wpa_s->ifmsh) {
1639                 wpa_msg(wpa_s, MSG_INFO,
1640                         "Avoiding join because we already joined a mesh group");
1641                 return 0;
1642         }
1643 #endif /* CONFIG_MESH */
1644
1645         if (selected) {
1646                 int skip;
1647                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1648                 if (skip) {
1649                         if (new_scan)
1650                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1651                         return 0;
1652                 }
1653
1654                 if (ssid != wpa_s->current_ssid &&
1655                     wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1656                         wpa_s->own_disconnect_req = 1;
1657                         wpa_supplicant_deauthenticate(
1658                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1659                 }
1660
1661                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1662                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1663                         return -1;
1664                 }
1665                 if (new_scan)
1666                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1667                 /*
1668                  * Do not notify other virtual radios of scan results since we do not
1669                  * want them to start other associations at the same time.
1670                  */
1671                 return 1;
1672         } else {
1673                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1674                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1675                 if (ssid) {
1676                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1677                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1678                         if (new_scan)
1679                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1680                 } else if (own_request) {
1681                         /*
1682                          * No SSID found. If SCAN results are as a result of
1683                          * own scan request and not due to a scan request on
1684                          * another shared interface, try another scan.
1685                          */
1686                         int timeout_sec = wpa_s->scan_interval;
1687                         int timeout_usec = 0;
1688 #ifdef CONFIG_P2P
1689                         int res;
1690
1691                         res = wpas_p2p_scan_no_go_seen(wpa_s);
1692                         if (res == 2)
1693                                 return 2;
1694                         if (res == 1)
1695                                 return 0;
1696
1697                         if (wpa_s->p2p_in_provisioning ||
1698                             wpa_s->show_group_started ||
1699                             wpa_s->p2p_in_invitation) {
1700                                 /*
1701                                  * Use shorter wait during P2P Provisioning
1702                                  * state and during P2P join-a-group operation
1703                                  * to speed up group formation.
1704                                  */
1705                                 timeout_sec = 0;
1706                                 timeout_usec = 250000;
1707                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1708                                                             timeout_usec);
1709                                 return 0;
1710                         }
1711 #endif /* CONFIG_P2P */
1712 #ifdef CONFIG_INTERWORKING
1713                         if (wpa_s->conf->auto_interworking &&
1714                             wpa_s->conf->interworking &&
1715                             wpa_s->conf->cred) {
1716                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1717                                         "start ANQP fetch since no matching "
1718                                         "networks found");
1719                                 wpa_s->network_select = 1;
1720                                 wpa_s->auto_network_select = 1;
1721                                 interworking_start_fetch_anqp(wpa_s);
1722                                 return 1;
1723                         }
1724 #endif /* CONFIG_INTERWORKING */
1725 #ifdef CONFIG_WPS
1726                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1727                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1728                                 timeout_sec = 0;
1729                                 timeout_usec = 500000;
1730                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1731                                                             timeout_usec);
1732                                 return 0;
1733                         }
1734 #endif /* CONFIG_WPS */
1735                         if (wpa_supplicant_req_sched_scan(wpa_s))
1736                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1737                                                             timeout_usec);
1738
1739                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1740                                      WPA_EVENT_NETWORK_NOT_FOUND);
1741                 }
1742         }
1743         return 0;
1744 }
1745
1746
1747 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1748                                              union wpa_event_data *data)
1749 {
1750         struct wpa_supplicant *ifs;
1751         int res;
1752
1753         res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1754         if (res == 2) {
1755                 /*
1756                  * Interface may have been removed, so must not dereference
1757                  * wpa_s after this.
1758                  */
1759                 return 1;
1760         }
1761         if (res != 0) {
1762                 /*
1763                  * If no scan results could be fetched, then no need to
1764                  * notify those interfaces that did not actually request
1765                  * this scan. Similarly, if scan results started a new operation on this
1766                  * interface, do not notify other interfaces to avoid concurrent
1767                  * operations during a connection attempt.
1768                  */
1769                 return 0;
1770         }
1771
1772         /*
1773          * Check other interfaces to see if they share the same radio. If
1774          * so, they get updated with this same scan info.
1775          */
1776         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1777                          radio_list) {
1778                 if (ifs != wpa_s) {
1779                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1780                                    "sibling", ifs->ifname);
1781                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1782                 }
1783         }
1784
1785         return 0;
1786 }
1787
1788 #endif /* CONFIG_NO_SCAN_PROCESSING */
1789
1790
1791 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1792 {
1793 #ifdef CONFIG_NO_SCAN_PROCESSING
1794         return -1;
1795 #else /* CONFIG_NO_SCAN_PROCESSING */
1796         struct os_reltime now;
1797
1798         if (wpa_s->last_scan_res_used == 0)
1799                 return -1;
1800
1801         os_get_reltime(&now);
1802         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1803                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1804                 return -1;
1805         }
1806
1807         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1808 #endif /* CONFIG_NO_SCAN_PROCESSING */
1809 }
1810
1811 #ifdef CONFIG_WNM
1812
1813 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1814 {
1815         struct wpa_supplicant *wpa_s = eloop_ctx;
1816
1817         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1818                 return;
1819
1820         if (!wpa_s->no_keep_alive) {
1821                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1822                            MAC2STR(wpa_s->bssid));
1823                 /* TODO: could skip this if normal data traffic has been sent */
1824                 /* TODO: Consider using some more appropriate data frame for
1825                  * this */
1826                 if (wpa_s->l2)
1827                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1828                                        (u8 *) "", 0);
1829         }
1830
1831 #ifdef CONFIG_SME
1832         if (wpa_s->sme.bss_max_idle_period) {
1833                 unsigned int msec;
1834                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1835                 if (msec > 100)
1836                         msec -= 100;
1837                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1838                                        wnm_bss_keep_alive, wpa_s, NULL);
1839         }
1840 #endif /* CONFIG_SME */
1841 }
1842
1843
1844 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1845                                    const u8 *ies, size_t ies_len)
1846 {
1847         struct ieee802_11_elems elems;
1848
1849         if (ies == NULL)
1850                 return;
1851
1852         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1853                 return;
1854
1855 #ifdef CONFIG_SME
1856         if (elems.bss_max_idle_period) {
1857                 unsigned int msec;
1858                 wpa_s->sme.bss_max_idle_period =
1859                         WPA_GET_LE16(elems.bss_max_idle_period);
1860                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1861                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1862                            (elems.bss_max_idle_period[2] & 0x01) ?
1863                            " (protected keep-live required)" : "");
1864                 if (wpa_s->sme.bss_max_idle_period == 0)
1865                         wpa_s->sme.bss_max_idle_period = 1;
1866                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1867                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1868                          /* msec times 1000 */
1869                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1870                         if (msec > 100)
1871                                 msec -= 100;
1872                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1873                                                wnm_bss_keep_alive, wpa_s,
1874                                                NULL);
1875                 }
1876         }
1877 #endif /* CONFIG_SME */
1878 }
1879
1880 #endif /* CONFIG_WNM */
1881
1882
1883 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1884 {
1885 #ifdef CONFIG_WNM
1886         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1887 #endif /* CONFIG_WNM */
1888 }
1889
1890
1891 #ifdef CONFIG_INTERWORKING
1892
1893 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1894                             size_t len)
1895 {
1896         int res;
1897
1898         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1899         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1900         if (res) {
1901                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1902         }
1903
1904         return res;
1905 }
1906
1907
1908 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1909                                             const u8 *ies, size_t ies_len)
1910 {
1911         struct ieee802_11_elems elems;
1912
1913         if (ies == NULL)
1914                 return;
1915
1916         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1917                 return;
1918
1919         if (elems.qos_map_set) {
1920                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1921                                  elems.qos_map_set_len);
1922         }
1923 }
1924
1925 #endif /* CONFIG_INTERWORKING */
1926
1927
1928 #ifdef CONFIG_FST
1929 static int wpas_fst_update_mbie(struct wpa_supplicant *wpa_s,
1930                                 const u8 *ie, size_t ie_len)
1931 {
1932         struct mb_ies_info mb_ies;
1933
1934         if (!ie || !ie_len || !wpa_s->fst)
1935             return -ENOENT;
1936
1937         os_memset(&mb_ies, 0, sizeof(mb_ies));
1938
1939         while (ie_len >= 2 && mb_ies.nof_ies < MAX_NOF_MB_IES_SUPPORTED) {
1940                 size_t len;
1941
1942                 len = 2 + ie[1];
1943                 if (len > ie_len) {
1944                         wpa_hexdump(MSG_DEBUG, "FST: Truncated IE found",
1945                                     ie, ie_len);
1946                         break;
1947                 }
1948
1949                 if (ie[0] == WLAN_EID_MULTI_BAND) {
1950                         wpa_printf(MSG_DEBUG, "MB IE of %u bytes found",
1951                                    (unsigned int) len);
1952                         mb_ies.ies[mb_ies.nof_ies].ie = ie + 2;
1953                         mb_ies.ies[mb_ies.nof_ies].ie_len = len - 2;
1954                         mb_ies.nof_ies++;
1955                 }
1956
1957                 ie_len -= len;
1958                 ie += len;
1959         }
1960
1961         if (mb_ies.nof_ies > 0) {
1962                 wpabuf_free(wpa_s->received_mb_ies);
1963                 wpa_s->received_mb_ies = mb_ies_by_info(&mb_ies);
1964                 return 0;
1965         }
1966
1967         return -ENOENT;
1968 }
1969 #endif /* CONFIG_FST */
1970
1971
1972 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1973                                           union wpa_event_data *data)
1974 {
1975         int l, len, found = 0, wpa_found, rsn_found;
1976         const u8 *p;
1977 #ifdef CONFIG_IEEE80211R
1978         u8 bssid[ETH_ALEN];
1979 #endif /* CONFIG_IEEE80211R */
1980
1981         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1982         if (data->assoc_info.req_ies)
1983                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1984                             data->assoc_info.req_ies_len);
1985         if (data->assoc_info.resp_ies) {
1986                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1987                             data->assoc_info.resp_ies_len);
1988 #ifdef CONFIG_TDLS
1989                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1990                                         data->assoc_info.resp_ies_len);
1991 #endif /* CONFIG_TDLS */
1992 #ifdef CONFIG_WNM
1993                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1994                                        data->assoc_info.resp_ies_len);
1995 #endif /* CONFIG_WNM */
1996 #ifdef CONFIG_INTERWORKING
1997                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1998                                                 data->assoc_info.resp_ies_len);
1999 #endif /* CONFIG_INTERWORKING */
2000         }
2001         if (data->assoc_info.beacon_ies)
2002                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
2003                             data->assoc_info.beacon_ies,
2004                             data->assoc_info.beacon_ies_len);
2005         if (data->assoc_info.freq)
2006                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
2007                         data->assoc_info.freq);
2008
2009         p = data->assoc_info.req_ies;
2010         l = data->assoc_info.req_ies_len;
2011
2012         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
2013         while (p && l >= 2) {
2014                 len = p[1] + 2;
2015                 if (len > l) {
2016                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
2017                                     p, l);
2018                         break;
2019                 }
2020                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
2021                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
2022                     (p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 4 &&
2023                      (os_memcmp(&p[2], "\x50\x6F\x9A\x12", 4) == 0)) ||
2024                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
2025                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
2026                                 break;
2027                         found = 1;
2028                         wpa_find_assoc_pmkid(wpa_s);
2029                         break;
2030                 }
2031                 l -= len;
2032                 p += len;
2033         }
2034         if (!found && data->assoc_info.req_ies)
2035                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
2036
2037 #ifdef CONFIG_IEEE80211R
2038 #ifdef CONFIG_SME
2039         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
2040                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
2041                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
2042                                                  data->assoc_info.resp_ies,
2043                                                  data->assoc_info.resp_ies_len,
2044                                                  bssid) < 0) {
2045                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
2046                                 "Reassociation Response failed");
2047                         wpa_supplicant_deauthenticate(
2048                                 wpa_s, WLAN_REASON_INVALID_IE);
2049                         return -1;
2050                 }
2051         }
2052
2053         p = data->assoc_info.resp_ies;
2054         l = data->assoc_info.resp_ies_len;
2055
2056 #ifdef CONFIG_WPS_STRICT
2057         if (p && wpa_s->current_ssid &&
2058             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
2059                 struct wpabuf *wps;
2060                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
2061                 if (wps == NULL) {
2062                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
2063                                 "include WPS IE in (Re)Association Response");
2064                         return -1;
2065                 }
2066
2067                 if (wps_validate_assoc_resp(wps) < 0) {
2068                         wpabuf_free(wps);
2069                         wpa_supplicant_deauthenticate(
2070                                 wpa_s, WLAN_REASON_INVALID_IE);
2071                         return -1;
2072                 }
2073                 wpabuf_free(wps);
2074         }
2075 #endif /* CONFIG_WPS_STRICT */
2076
2077         /* Go through the IEs and make a copy of the MDIE, if present. */
2078         while (p && l >= 2) {
2079                 len = p[1] + 2;
2080                 if (len > l) {
2081                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
2082                                     p, l);
2083                         break;
2084                 }
2085                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
2086                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
2087                         wpa_s->sme.ft_used = 1;
2088                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
2089                                   MOBILITY_DOMAIN_ID_LEN);
2090                         break;
2091                 }
2092                 l -= len;
2093                 p += len;
2094         }
2095 #endif /* CONFIG_SME */
2096
2097         /* Process FT when SME is in the driver */
2098         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
2099             wpa_ft_is_completed(wpa_s->wpa)) {
2100                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
2101                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
2102                                                  data->assoc_info.resp_ies,
2103                                                  data->assoc_info.resp_ies_len,
2104                                                  bssid) < 0) {
2105                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
2106                                 "Reassociation Response failed");
2107                         wpa_supplicant_deauthenticate(
2108                                 wpa_s, WLAN_REASON_INVALID_IE);
2109                         return -1;
2110                 }
2111                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
2112         }
2113
2114         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
2115                              data->assoc_info.resp_ies_len);
2116 #endif /* CONFIG_IEEE80211R */
2117
2118         /* WPA/RSN IE from Beacon/ProbeResp */
2119         p = data->assoc_info.beacon_ies;
2120         l = data->assoc_info.beacon_ies_len;
2121
2122         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
2123          */
2124         wpa_found = rsn_found = 0;
2125         while (p && l >= 2) {
2126                 len = p[1] + 2;
2127                 if (len > l) {
2128                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
2129                                     p, l);
2130                         break;
2131                 }
2132                 if (!wpa_found &&
2133                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
2134                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
2135                         wpa_found = 1;
2136                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
2137                 }
2138
2139                 if (!rsn_found &&
2140                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
2141                         rsn_found = 1;
2142                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
2143                 }
2144
2145                 l -= len;
2146                 p += len;
2147         }
2148
2149         if (!wpa_found && data->assoc_info.beacon_ies)
2150                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
2151         if (!rsn_found && data->assoc_info.beacon_ies)
2152                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
2153         if (wpa_found || rsn_found)
2154                 wpa_s->ap_ies_from_associnfo = 1;
2155
2156         if (wpa_s->assoc_freq && data->assoc_info.freq &&
2157             wpa_s->assoc_freq != data->assoc_info.freq) {
2158                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
2159                            "%u to %u MHz",
2160                            wpa_s->assoc_freq, data->assoc_info.freq);
2161                 wpa_supplicant_update_scan_results(wpa_s);
2162         }
2163
2164         wpa_s->assoc_freq = data->assoc_info.freq;
2165
2166         return 0;
2167 }
2168
2169
2170 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
2171 {
2172         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
2173
2174         if (!wpa_s->current_bss || !wpa_s->current_ssid)
2175                 return -1;
2176
2177         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
2178                 return 0;
2179
2180         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
2181                                         WPA_IE_VENDOR_TYPE);
2182         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
2183
2184         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
2185                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
2186             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
2187                                  bss_rsn ? 2 + bss_rsn[1] : 0))
2188                 return -1;
2189
2190         return 0;
2191 }
2192
2193
2194 static void wpas_fst_update_mb_assoc(struct wpa_supplicant *wpa_s,
2195                                      union wpa_event_data *data)
2196 {
2197 #ifdef CONFIG_FST
2198         struct assoc_info *ai = data ? &data->assoc_info : NULL;
2199         struct wpa_bss *bss = wpa_s->current_bss;
2200         const u8 *ieprb, *iebcn;
2201
2202         wpabuf_free(wpa_s->received_mb_ies);
2203         wpa_s->received_mb_ies = NULL;
2204
2205         if (ai &&
2206             !wpas_fst_update_mbie(wpa_s, ai->resp_ies, ai->resp_ies_len)) {
2207                 wpa_printf(MSG_DEBUG,
2208                            "FST: MB IEs updated from Association Response frame");
2209                 return;
2210         }
2211
2212         if (ai &&
2213             !wpas_fst_update_mbie(wpa_s, ai->beacon_ies, ai->beacon_ies_len)) {
2214                 wpa_printf(MSG_DEBUG,
2215                            "FST: MB IEs updated from association event Beacon IEs");
2216                 return;
2217         }
2218
2219         if (!bss)
2220                 return;
2221
2222         ieprb = (const u8 *) (bss + 1);
2223         iebcn = ieprb + bss->ie_len;
2224
2225         if (!wpas_fst_update_mbie(wpa_s, ieprb, bss->ie_len))
2226                 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss IE");
2227         else if (!wpas_fst_update_mbie(wpa_s, iebcn, bss->beacon_ie_len))
2228                 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss beacon IE");
2229 #endif /* CONFIG_FST */
2230 }
2231
2232
2233 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
2234                                        union wpa_event_data *data)
2235 {
2236         u8 bssid[ETH_ALEN];
2237         int ft_completed;
2238         int new_bss = 0;
2239
2240 #ifdef CONFIG_AP
2241         if (wpa_s->ap_iface) {
2242                 if (!data)
2243                         return;
2244                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
2245                                     data->assoc_info.addr,
2246                                     data->assoc_info.req_ies,
2247                                     data->assoc_info.req_ies_len,
2248                                     data->assoc_info.reassoc);
2249                 return;
2250         }
2251 #endif /* CONFIG_AP */
2252
2253         eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
2254
2255         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
2256         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
2257                 return;
2258
2259         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
2260                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
2261                 wpa_supplicant_deauthenticate(
2262                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2263                 return;
2264         }
2265
2266         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
2267         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
2268                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
2269                         MACSTR, MAC2STR(bssid));
2270                 new_bss = 1;
2271                 random_add_randomness(bssid, ETH_ALEN);
2272                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
2273                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2274                 wpas_notify_bssid_changed(wpa_s);
2275
2276                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
2277                         wpa_clear_keys(wpa_s, bssid);
2278                 }
2279                 if (wpa_supplicant_select_config(wpa_s) < 0) {
2280                         wpa_supplicant_deauthenticate(
2281                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2282                         return;
2283                 }
2284         }
2285
2286         if (wpa_s->conf->ap_scan == 1 &&
2287             wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
2288                 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0 && new_bss)
2289                         wpa_msg(wpa_s, MSG_WARNING,
2290                                 "WPA/RSN IEs not updated");
2291         }
2292
2293         wpas_fst_update_mb_assoc(wpa_s, data);
2294
2295 #ifdef CONFIG_SME
2296         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
2297         wpa_s->sme.prev_bssid_set = 1;
2298         wpa_s->sme.last_unprot_disconnect.sec = 0;
2299 #endif /* CONFIG_SME */
2300
2301         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
2302         if (wpa_s->current_ssid) {
2303                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
2304                  * initialized before association, but for other modes,
2305                  * initialize PC/SC here, if the current configuration needs
2306                  * smartcard or SIM/USIM. */
2307                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
2308         }
2309         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
2310         if (wpa_s->l2)
2311                 l2_packet_notify_auth_start(wpa_s->l2);
2312
2313         /*
2314          * Set portEnabled first to FALSE in order to get EAP state machine out
2315          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
2316          * state machine may transit to AUTHENTICATING state based on obsolete
2317          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
2318          * AUTHENTICATED without ever giving chance to EAP state machine to
2319          * reset the state.
2320          */
2321         if (!ft_completed) {
2322                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2323                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2324         }
2325         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
2326                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2327         /* 802.1X::portControl = Auto */
2328         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2329         wpa_s->eapol_received = 0;
2330         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2331             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2332             (wpa_s->current_ssid &&
2333              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2334                 if (wpa_s->current_ssid &&
2335                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2336                     (wpa_s->drv_flags &
2337                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2338                         /*
2339                          * Set the key after having received joined-IBSS event
2340                          * from the driver.
2341                          */
2342                         wpa_supplicant_set_wpa_none_key(wpa_s,
2343                                                         wpa_s->current_ssid);
2344                 }
2345                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2346                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2347         } else if (!ft_completed) {
2348                 /* Timeout for receiving the first EAPOL packet */
2349                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2350         }
2351         wpa_supplicant_cancel_scan(wpa_s);
2352
2353         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2354             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2355                 /*
2356                  * We are done; the driver will take care of RSN 4-way
2357                  * handshake.
2358                  */
2359                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2360                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2361                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2362                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2363         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2364                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2365                 /*
2366                  * The driver will take care of RSN 4-way handshake, so we need
2367                  * to allow EAPOL supplicant to complete its work without
2368                  * waiting for WPA supplicant.
2369                  */
2370                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2371         } else if (ft_completed) {
2372                 /*
2373                  * FT protocol completed - make sure EAPOL state machine ends
2374                  * up in authenticated.
2375                  */
2376                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2377                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2378                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2379                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2380         }
2381
2382         wpa_s->last_eapol_matches_bssid = 0;
2383
2384         if (wpa_s->pending_eapol_rx) {
2385                 struct os_reltime now, age;
2386                 os_get_reltime(&now);
2387                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2388                 if (age.sec == 0 && age.usec < 100000 &&
2389                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2390                     0) {
2391                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2392                                 "frame that was received just before "
2393                                 "association notification");
2394                         wpa_supplicant_rx_eapol(
2395                                 wpa_s, wpa_s->pending_eapol_rx_src,
2396                                 wpabuf_head(wpa_s->pending_eapol_rx),
2397                                 wpabuf_len(wpa_s->pending_eapol_rx));
2398                 }
2399                 wpabuf_free(wpa_s->pending_eapol_rx);
2400                 wpa_s->pending_eapol_rx = NULL;
2401         }
2402
2403         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2404              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2405             wpa_s->current_ssid &&
2406             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2407                 /* Set static WEP keys again */
2408                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2409         }
2410
2411 #ifdef CONFIG_IBSS_RSN
2412         if (wpa_s->current_ssid &&
2413             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2414             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2415             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2416             wpa_s->ibss_rsn == NULL) {
2417                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2418                 if (!wpa_s->ibss_rsn) {
2419                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2420                         wpa_supplicant_deauthenticate(
2421                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2422                         return;
2423                 }
2424
2425                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2426         }
2427 #endif /* CONFIG_IBSS_RSN */
2428
2429         wpas_wps_notify_assoc(wpa_s, bssid);
2430
2431         if (data) {
2432                 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2433                                     data->assoc_info.resp_ies_len,
2434                                     &data->assoc_info.wmm_params);
2435
2436                 if (wpa_s->reassoc_same_bss)
2437                         wmm_ac_restore_tspecs(wpa_s);
2438         }
2439 }
2440
2441
2442 static int disconnect_reason_recoverable(u16 reason_code)
2443 {
2444         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2445                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2446                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2447 }
2448
2449
2450 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2451                                           u16 reason_code,
2452                                           int locally_generated)
2453 {
2454         const u8 *bssid;
2455
2456         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2457                 /*
2458                  * At least Host AP driver and a Prism3 card seemed to be
2459                  * generating streams of disconnected events when configuring
2460                  * IBSS for WPA-None. Ignore them for now.
2461                  */
2462                 return;
2463         }
2464
2465         bssid = wpa_s->bssid;
2466         if (is_zero_ether_addr(bssid))
2467                 bssid = wpa_s->pending_bssid;
2468
2469         if (!is_zero_ether_addr(bssid) ||
2470             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2471                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2472                         " reason=%d%s",
2473                         MAC2STR(bssid), reason_code,
2474                         locally_generated ? " locally_generated=1" : "");
2475         }
2476 }
2477
2478
2479 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2480                                  int locally_generated)
2481 {
2482         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2483             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2484                 return 0; /* Not in 4-way handshake with PSK */
2485
2486         /*
2487          * It looks like connection was lost while trying to go through PSK
2488          * 4-way handshake. Filter out known disconnection cases that are caused
2489          * by something else than PSK mismatch to avoid confusing reports.
2490          */
2491
2492         if (locally_generated) {
2493                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2494                         return 0;
2495         }
2496
2497         return 1;
2498 }
2499
2500
2501 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2502                                                  u16 reason_code,
2503                                                  int locally_generated)
2504 {
2505         const u8 *bssid;
2506         int authenticating;
2507         u8 prev_pending_bssid[ETH_ALEN];
2508         struct wpa_bss *fast_reconnect = NULL;
2509         struct wpa_ssid *fast_reconnect_ssid = NULL;
2510         struct wpa_ssid *last_ssid;
2511
2512         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2513         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2514
2515         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2516                 /*
2517                  * At least Host AP driver and a Prism3 card seemed to be
2518                  * generating streams of disconnected events when configuring
2519                  * IBSS for WPA-None. Ignore them for now.
2520                  */
2521                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2522                         "IBSS/WPA-None mode");
2523                 return;
2524         }
2525
2526         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2527                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2528                         "pre-shared key may be incorrect");
2529                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2530                         return; /* P2P group removed */
2531                 wpas_auth_failed(wpa_s, "WRONG_KEY");
2532         }
2533         if (!wpa_s->disconnected &&
2534             (!wpa_s->auto_reconnect_disabled ||
2535              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2536              wpas_wps_searching(wpa_s) ||
2537              wpas_wps_reenable_networks_pending(wpa_s))) {
2538                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2539                         "reconnect (wps=%d/%d wpa_state=%d)",
2540                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2541                         wpas_wps_searching(wpa_s),
2542                         wpa_s->wpa_state);
2543                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2544                     wpa_s->current_ssid &&
2545                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2546                     !locally_generated &&
2547                     disconnect_reason_recoverable(reason_code)) {
2548                         /*
2549                          * It looks like the AP has dropped association with
2550                          * us, but could allow us to get back in. Try to
2551                          * reconnect to the same BSS without full scan to save
2552                          * time for some common cases.
2553                          */
2554                         fast_reconnect = wpa_s->current_bss;
2555                         fast_reconnect_ssid = wpa_s->current_ssid;
2556                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2557                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2558                 else
2559                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2560                                 "immediate scan");
2561         } else {
2562                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2563                         "try to re-connect");
2564                 wpa_s->reassociate = 0;
2565                 wpa_s->disconnected = 1;
2566                 if (!wpa_s->pno)
2567                         wpa_supplicant_cancel_sched_scan(wpa_s);
2568         }
2569         bssid = wpa_s->bssid;
2570         if (is_zero_ether_addr(bssid))
2571                 bssid = wpa_s->pending_bssid;
2572         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2573                 wpas_connection_failed(wpa_s, bssid);
2574         wpa_sm_notify_disassoc(wpa_s->wpa);
2575         if (locally_generated)
2576                 wpa_s->disconnect_reason = -reason_code;
2577         else
2578                 wpa_s->disconnect_reason = reason_code;
2579         wpas_notify_disconnect_reason(wpa_s);
2580         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2581                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2582                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2583         }
2584         last_ssid = wpa_s->current_ssid;
2585         wpa_supplicant_mark_disassoc(wpa_s);
2586
2587         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2588                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2589                 wpa_s->current_ssid = last_ssid;
2590         }
2591
2592         if (fast_reconnect &&
2593             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2594             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2595             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2596                              fast_reconnect->ssid_len) &&
2597             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid) &&
2598             !wpa_is_bss_tmp_disallowed(wpa_s, fast_reconnect->bssid)) {
2599 #ifndef CONFIG_NO_SCAN_PROCESSING
2600                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2601                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2602                                            fast_reconnect_ssid) < 0) {
2603                         /* Recover through full scan */
2604                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2605                 }
2606 #endif /* CONFIG_NO_SCAN_PROCESSING */
2607         } else if (fast_reconnect) {
2608                 /*
2609                  * Could not reconnect to the same BSS due to network being
2610                  * disabled. Use a new scan to match the alternative behavior
2611                  * above, i.e., to continue automatic reconnection attempt in a
2612                  * way that enforces disabled network rules.
2613                  */
2614                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2615         }
2616 }
2617
2618
2619 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2620 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2621 {
2622         struct wpa_supplicant *wpa_s = eloop_ctx;
2623
2624         if (!wpa_s->pending_mic_error_report)
2625                 return;
2626
2627         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2628         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2629         wpa_s->pending_mic_error_report = 0;
2630 }
2631 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2632
2633
2634 static void
2635 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2636                                          union wpa_event_data *data)
2637 {
2638         int pairwise;
2639         struct os_reltime t;
2640
2641         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2642         pairwise = (data && data->michael_mic_failure.unicast);
2643         os_get_reltime(&t);
2644         if ((wpa_s->last_michael_mic_error.sec &&
2645              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2646             wpa_s->pending_mic_error_report) {
2647                 if (wpa_s->pending_mic_error_report) {
2648                         /*
2649                          * Send the pending MIC error report immediately since
2650                          * we are going to start countermeasures and AP better
2651                          * do the same.
2652                          */
2653                         wpa_sm_key_request(wpa_s->wpa, 1,
2654                                            wpa_s->pending_mic_error_pairwise);
2655                 }
2656
2657                 /* Send the new MIC error report immediately since we are going
2658                  * to start countermeasures and AP better do the same.
2659                  */
2660                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2661
2662                 /* initialize countermeasures */
2663                 wpa_s->countermeasures = 1;
2664
2665                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2666
2667                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2668
2669                 /*
2670                  * Need to wait for completion of request frame. We do not get
2671                  * any callback for the message completion, so just wait a
2672                  * short while and hope for the best. */
2673                 os_sleep(0, 10000);
2674
2675                 wpa_drv_set_countermeasures(wpa_s, 1);
2676                 wpa_supplicant_deauthenticate(wpa_s,
2677                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2678                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2679                                      wpa_s, NULL);
2680                 eloop_register_timeout(60, 0,
2681                                        wpa_supplicant_stop_countermeasures,
2682                                        wpa_s, NULL);
2683                 /* TODO: mark the AP rejected for 60 second. STA is
2684                  * allowed to associate with another AP.. */
2685         } else {
2686 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2687                 if (wpa_s->mic_errors_seen) {
2688                         /*
2689                          * Reduce the effectiveness of Michael MIC error
2690                          * reports as a means for attacking against TKIP if
2691                          * more than one MIC failure is noticed with the same
2692                          * PTK. We delay the transmission of the reports by a
2693                          * random time between 0 and 60 seconds in order to
2694                          * force the attacker wait 60 seconds before getting
2695                          * the information on whether a frame resulted in a MIC
2696                          * failure.
2697                          */
2698                         u8 rval[4];
2699                         int sec;
2700
2701                         if (os_get_random(rval, sizeof(rval)) < 0)
2702                                 sec = os_random() % 60;
2703                         else
2704                                 sec = WPA_GET_BE32(rval) % 60;
2705                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2706                                 "report %d seconds", sec);
2707                         wpa_s->pending_mic_error_report = 1;
2708                         wpa_s->pending_mic_error_pairwise = pairwise;
2709                         eloop_cancel_timeout(
2710                                 wpa_supplicant_delayed_mic_error_report,
2711                                 wpa_s, NULL);
2712                         eloop_register_timeout(
2713                                 sec, os_random() % 1000000,
2714                                 wpa_supplicant_delayed_mic_error_report,
2715                                 wpa_s, NULL);
2716                 } else {
2717                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2718                 }
2719 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2720                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2721 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2722         }
2723         wpa_s->last_michael_mic_error = t;
2724         wpa_s->mic_errors_seen++;
2725 }
2726
2727
2728 #ifdef CONFIG_TERMINATE_ONLASTIF
2729 static int any_interfaces(struct wpa_supplicant *head)
2730 {
2731         struct wpa_supplicant *wpa_s;
2732
2733         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2734                 if (!wpa_s->interface_removed)
2735                         return 1;
2736         return 0;
2737 }
2738 #endif /* CONFIG_TERMINATE_ONLASTIF */
2739
2740
2741 static void
2742 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2743                                       union wpa_event_data *data)
2744 {
2745         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2746                 return;
2747
2748         switch (data->interface_status.ievent) {
2749         case EVENT_INTERFACE_ADDED:
2750                 if (!wpa_s->interface_removed)
2751                         break;
2752                 wpa_s->interface_removed = 0;
2753                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2754                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2755                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2756                                 "driver after interface was added");
2757                 }
2758
2759 #ifdef CONFIG_P2P
2760                 if (!wpa_s->global->p2p &&
2761                     !wpa_s->global->p2p_disabled &&
2762                     !wpa_s->conf->p2p_disabled &&
2763                     (wpa_s->drv_flags &
2764                      WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
2765                     wpas_p2p_add_p2pdev_interface(
2766                             wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) {
2767                         wpa_printf(MSG_INFO,
2768                                    "P2P: Failed to enable P2P Device interface");
2769                         /* Try to continue without. P2P will be disabled. */
2770                 }
2771 #endif /* CONFIG_P2P */
2772
2773                 break;
2774         case EVENT_INTERFACE_REMOVED:
2775                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2776                 wpa_s->interface_removed = 1;
2777                 wpa_supplicant_mark_disassoc(wpa_s);
2778                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2779                 l2_packet_deinit(wpa_s->l2);
2780                 wpa_s->l2 = NULL;
2781
2782 #ifdef CONFIG_P2P
2783                 if (wpa_s->global->p2p &&
2784                     wpa_s->global->p2p_init_wpa_s->parent == wpa_s &&
2785                     (wpa_s->drv_flags &
2786                      WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) {
2787                         wpa_dbg(wpa_s, MSG_DEBUG,
2788                                 "Removing P2P Device interface");
2789                         wpa_supplicant_remove_iface(
2790                                 wpa_s->global, wpa_s->global->p2p_init_wpa_s,
2791                                 0);
2792                         wpa_s->global->p2p_init_wpa_s = NULL;
2793                 }
2794 #endif /* CONFIG_P2P */
2795
2796 #ifdef CONFIG_MATCH_IFACE
2797                 if (wpa_s->matched) {
2798                         wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
2799                         break;
2800                 }
2801 #endif /* CONFIG_MATCH_IFACE */
2802
2803 #ifdef CONFIG_TERMINATE_ONLASTIF
2804                 /* check if last interface */
2805                 if (!any_interfaces(wpa_s->global->ifaces))
2806                         eloop_terminate();
2807 #endif /* CONFIG_TERMINATE_ONLASTIF */
2808                 break;
2809         }
2810 }
2811
2812
2813 #ifdef CONFIG_PEERKEY
2814 static void
2815 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2816                               union wpa_event_data *data)
2817 {
2818         if (data == NULL)
2819                 return;
2820         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2821 }
2822 #endif /* CONFIG_PEERKEY */
2823
2824
2825 #ifdef CONFIG_TDLS
2826 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2827                                       union wpa_event_data *data)
2828 {
2829         if (data == NULL)
2830                 return;
2831         switch (data->tdls.oper) {
2832         case TDLS_REQUEST_SETUP:
2833                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2834                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2835                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2836                 else
2837                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2838                 break;
2839         case TDLS_REQUEST_TEARDOWN:
2840                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2841                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2842                                                data->tdls.reason_code);
2843                 else
2844                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2845                                           data->tdls.peer);
2846                 break;
2847         case TDLS_REQUEST_DISCOVER:
2848                         wpa_tdls_send_discovery_request(wpa_s->wpa,
2849                                                         data->tdls.peer);
2850                 break;
2851         }
2852 }
2853 #endif /* CONFIG_TDLS */
2854
2855
2856 #ifdef CONFIG_WNM
2857 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2858                                      union wpa_event_data *data)
2859 {
2860         if (data == NULL)
2861                 return;
2862         switch (data->wnm.oper) {
2863         case WNM_OPER_SLEEP:
2864                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2865                            "(action=%d, intval=%d)",
2866                            data->wnm.sleep_action, data->wnm.sleep_intval);
2867                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2868                                              data->wnm.sleep_intval, NULL);
2869                 break;
2870         }
2871 }
2872 #endif /* CONFIG_WNM */
2873
2874
2875 #ifdef CONFIG_IEEE80211R
2876 static void
2877 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2878                                  union wpa_event_data *data)
2879 {
2880         if (data == NULL)
2881                 return;
2882
2883         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2884                                     data->ft_ies.ies_len,
2885                                     data->ft_ies.ft_action,
2886                                     data->ft_ies.target_ap,
2887                                     data->ft_ies.ric_ies,
2888                                     data->ft_ies.ric_ies_len) < 0) {
2889                 /* TODO: prevent MLME/driver from trying to associate? */
2890         }
2891 }
2892 #endif /* CONFIG_IEEE80211R */
2893
2894
2895 #ifdef CONFIG_IBSS_RSN
2896 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2897                                                 union wpa_event_data *data)
2898 {
2899         struct wpa_ssid *ssid;
2900         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2901                 return;
2902         if (data == NULL)
2903                 return;
2904         ssid = wpa_s->current_ssid;
2905         if (ssid == NULL)
2906                 return;
2907         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2908                 return;
2909
2910         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2911 }
2912
2913
2914 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2915                                            union wpa_event_data *data)
2916 {
2917         struct wpa_ssid *ssid = wpa_s->current_ssid;
2918
2919         if (ssid == NULL)
2920                 return;
2921
2922         /* check if the ssid is correctly configured as IBSS/RSN */
2923         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2924                 return;
2925
2926         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2927                              data->rx_mgmt.frame_len);
2928 }
2929 #endif /* CONFIG_IBSS_RSN */
2930
2931
2932 #ifdef CONFIG_IEEE80211R
2933 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2934                          size_t len)
2935 {
2936         const u8 *sta_addr, *target_ap_addr;
2937         u16 status;
2938
2939         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2940         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2941                 return; /* only SME case supported for now */
2942         if (len < 1 + 2 * ETH_ALEN + 2)
2943                 return;
2944         if (data[0] != 2)
2945                 return; /* Only FT Action Response is supported for now */
2946         sta_addr = data + 1;
2947         target_ap_addr = data + 1 + ETH_ALEN;
2948         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2949         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2950                 MACSTR " TargetAP " MACSTR " status %u",
2951                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2952
2953         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2954                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2955                         " in FT Action Response", MAC2STR(sta_addr));
2956                 return;
2957         }
2958
2959         if (status) {
2960                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2961                         "failure (status code %d)", status);
2962                 /* TODO: report error to FT code(?) */
2963                 return;
2964         }
2965
2966         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2967                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2968                                     target_ap_addr, NULL, 0) < 0)
2969                 return;
2970
2971 #ifdef CONFIG_SME
2972         {
2973                 struct wpa_bss *bss;
2974                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2975                 if (bss)
2976                         wpa_s->sme.freq = bss->freq;
2977                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2978                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2979                               WLAN_AUTH_FT);
2980         }
2981 #endif /* CONFIG_SME */
2982 }
2983 #endif /* CONFIG_IEEE80211R */
2984
2985
2986 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2987                                                struct unprot_deauth *e)
2988 {
2989 #ifdef CONFIG_IEEE80211W
2990         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2991                    "dropped: " MACSTR " -> " MACSTR
2992                    " (reason code %u)",
2993                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2994         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2995 #endif /* CONFIG_IEEE80211W */
2996 }
2997
2998
2999 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
3000                                                  struct unprot_disassoc *e)
3001 {
3002 #ifdef CONFIG_IEEE80211W
3003         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
3004                    "dropped: " MACSTR " -> " MACSTR
3005                    " (reason code %u)",
3006                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
3007         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
3008 #endif /* CONFIG_IEEE80211W */
3009 }
3010
3011
3012 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
3013                                   u16 reason_code, int locally_generated,
3014                                   const u8 *ie, size_t ie_len, int deauth)
3015 {
3016 #ifdef CONFIG_AP
3017         if (wpa_s->ap_iface && addr) {
3018                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
3019                 return;
3020         }
3021
3022         if (wpa_s->ap_iface) {
3023                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
3024                 return;
3025         }
3026 #endif /* CONFIG_AP */
3027
3028         if (!locally_generated)
3029                 wpa_s->own_disconnect_req = 0;
3030
3031         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
3032
3033         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
3034               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
3035                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
3036                eapol_sm_failed(wpa_s->eapol))) &&
3037              !wpa_s->eap_expected_failure))
3038                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
3039
3040 #ifdef CONFIG_P2P
3041         if (deauth && reason_code > 0) {
3042                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
3043                                           locally_generated) > 0) {
3044                         /*
3045                          * The interface was removed, so cannot continue
3046                          * processing any additional operations after this.
3047                          */
3048                         return;
3049                 }
3050         }
3051 #endif /* CONFIG_P2P */
3052
3053         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
3054                                              locally_generated);
3055 }
3056
3057
3058 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
3059                                 struct disassoc_info *info)
3060 {
3061         u16 reason_code = 0;
3062         int locally_generated = 0;
3063         const u8 *addr = NULL;
3064         const u8 *ie = NULL;
3065         size_t ie_len = 0;
3066
3067         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
3068
3069         if (info) {
3070                 addr = info->addr;
3071                 ie = info->ie;
3072                 ie_len = info->ie_len;
3073                 reason_code = info->reason_code;
3074                 locally_generated = info->locally_generated;
3075                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
3076                         locally_generated ? " (locally generated)" : "");
3077                 if (addr)
3078                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
3079                                 MAC2STR(addr));
3080                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
3081                             ie, ie_len);
3082         }
3083
3084 #ifdef CONFIG_AP
3085         if (wpa_s->ap_iface && info && info->addr) {
3086                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
3087                 return;
3088         }
3089
3090         if (wpa_s->ap_iface) {
3091                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
3092                 return;
3093         }
3094 #endif /* CONFIG_AP */
3095
3096 #ifdef CONFIG_P2P
3097         if (info) {
3098                 wpas_p2p_disassoc_notif(
3099                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
3100                         locally_generated);
3101         }
3102 #endif /* CONFIG_P2P */
3103
3104         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3105                 sme_event_disassoc(wpa_s, info);
3106
3107         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
3108                               ie, ie_len, 0);
3109 }
3110
3111
3112 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
3113                               struct deauth_info *info)
3114 {
3115         u16 reason_code = 0;
3116         int locally_generated = 0;
3117         const u8 *addr = NULL;
3118         const u8 *ie = NULL;
3119         size_t ie_len = 0;
3120
3121         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
3122
3123         if (info) {
3124                 addr = info->addr;
3125                 ie = info->ie;
3126                 ie_len = info->ie_len;
3127                 reason_code = info->reason_code;
3128                 locally_generated = info->locally_generated;
3129                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
3130                         reason_code,
3131                         locally_generated ? " (locally generated)" : "");
3132                 if (addr) {
3133                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
3134                                 MAC2STR(addr));
3135                 }
3136                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
3137                             ie, ie_len);
3138         }
3139
3140         wpa_reset_ft_completed(wpa_s->wpa);
3141
3142         wpas_event_disconnect(wpa_s, addr, reason_code,
3143                               locally_generated, ie, ie_len, 1);
3144 }
3145
3146
3147 static const char * reg_init_str(enum reg_change_initiator init)
3148 {
3149         switch (init) {
3150         case REGDOM_SET_BY_CORE:
3151                 return "CORE";
3152         case REGDOM_SET_BY_USER:
3153                 return "USER";
3154         case REGDOM_SET_BY_DRIVER:
3155                 return "DRIVER";
3156         case REGDOM_SET_BY_COUNTRY_IE:
3157                 return "COUNTRY_IE";
3158         case REGDOM_BEACON_HINT:
3159                 return "BEACON_HINT";
3160         }
3161         return "?";
3162 }
3163
3164
3165 static const char * reg_type_str(enum reg_type type)
3166 {
3167         switch (type) {
3168         case REGDOM_TYPE_UNKNOWN:
3169                 return "UNKNOWN";
3170         case REGDOM_TYPE_COUNTRY:
3171                 return "COUNTRY";
3172         case REGDOM_TYPE_WORLD:
3173                 return "WORLD";
3174         case REGDOM_TYPE_CUSTOM_WORLD:
3175                 return "CUSTOM_WORLD";
3176         case REGDOM_TYPE_INTERSECTION:
3177                 return "INTERSECTION";
3178         }
3179         return "?";
3180 }
3181
3182
3183 static void wpa_supplicant_update_channel_list(
3184         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
3185 {
3186         struct wpa_supplicant *ifs;
3187
3188         /*
3189          * To allow backwards compatibility with higher level layers that
3190          * assumed the REGDOM_CHANGE event is sent over the initially added
3191          * interface. Find the highest parent of this interface and use it to
3192          * send the event.
3193          */
3194         for (ifs = wpa_s; ifs->parent && ifs != ifs->parent; ifs = ifs->parent)
3195                 ;
3196
3197         wpa_msg(ifs, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
3198                 reg_init_str(info->initiator), reg_type_str(info->type),
3199                 info->alpha2[0] ? " alpha2=" : "",
3200                 info->alpha2[0] ? info->alpha2 : "");
3201
3202         if (wpa_s->drv_priv == NULL)
3203                 return; /* Ignore event during drv initialization */
3204
3205         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
3206                          radio_list) {
3207                 wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
3208                            ifs->ifname);
3209                 free_hw_features(ifs);
3210                 ifs->hw.modes = wpa_drv_get_hw_feature_data(
3211                         ifs, &ifs->hw.num_modes, &ifs->hw.flags);
3212         }
3213
3214         /* Restart sched_scan with updated channel list */
3215         if (wpa_s->sched_scanning) {
3216                 wpa_dbg(wpa_s, MSG_DEBUG,
3217                         "Channel list changed restart sched scan.");
3218                 wpa_supplicant_cancel_sched_scan(wpa_s);
3219                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3220         }
3221
3222         wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_DRIVER);
3223 }
3224
3225
3226 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
3227                                       const u8 *frame, size_t len, int freq,
3228                                       int rssi)
3229 {
3230         const struct ieee80211_mgmt *mgmt;
3231         const u8 *payload;
3232         size_t plen;
3233         u8 category;
3234
3235         if (len < IEEE80211_HDRLEN + 2)
3236                 return;
3237
3238         mgmt = (const struct ieee80211_mgmt *) frame;
3239         payload = frame + IEEE80211_HDRLEN;
3240         category = *payload++;
3241         plen = len - IEEE80211_HDRLEN - 1;
3242
3243         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
3244                 " Category=%u DataLen=%d freq=%d MHz",
3245                 MAC2STR(mgmt->sa), category, (int) plen, freq);
3246
3247         if (category == WLAN_ACTION_WMM) {
3248                 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
3249                 return;
3250         }
3251
3252 #ifdef CONFIG_IEEE80211R
3253         if (category == WLAN_ACTION_FT) {
3254                 ft_rx_action(wpa_s, payload, plen);
3255                 return;
3256         }
3257 #endif /* CONFIG_IEEE80211R */
3258
3259 #ifdef CONFIG_IEEE80211W
3260 #ifdef CONFIG_SME
3261         if (category == WLAN_ACTION_SA_QUERY) {
3262                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
3263                 return;
3264         }
3265 #endif /* CONFIG_SME */
3266 #endif /* CONFIG_IEEE80211W */
3267
3268 #ifdef CONFIG_WNM
3269         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
3270                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
3271                 return;
3272         }
3273 #endif /* CONFIG_WNM */
3274
3275 #ifdef CONFIG_GAS
3276         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
3277              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
3278             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
3279                          mgmt->u.action.category,
3280                          payload, plen, freq) == 0)
3281                 return;
3282 #endif /* CONFIG_GAS */
3283
3284 #ifdef CONFIG_TDLS
3285         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
3286             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
3287                 wpa_dbg(wpa_s, MSG_DEBUG,
3288                         "TDLS: Received Discovery Response from " MACSTR,
3289                         MAC2STR(mgmt->sa));
3290                 return;
3291         }
3292 #endif /* CONFIG_TDLS */
3293
3294 #ifdef CONFIG_INTERWORKING
3295         if (category == WLAN_ACTION_QOS && plen >= 1 &&
3296             payload[0] == QOS_QOS_MAP_CONFIG) {
3297                 const u8 *pos = payload + 1;
3298                 size_t qlen = plen - 1;
3299                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
3300                         MACSTR, MAC2STR(mgmt->sa));
3301                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
3302                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
3303                     pos[1] <= qlen - 2 && pos[1] >= 16)
3304                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
3305                 return;
3306         }
3307 #endif /* CONFIG_INTERWORKING */
3308
3309         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3310             payload[0] == WLAN_RRM_RADIO_MEASUREMENT_REQUEST) {
3311                 wpas_rrm_handle_radio_measurement_request(wpa_s, mgmt->sa,
3312                                                           payload + 1,
3313                                                           plen - 1);
3314                 return;
3315         }
3316
3317         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3318             payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
3319                 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
3320                 return;
3321         }
3322
3323         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3324             payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
3325                 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
3326                                                          payload + 1, plen - 1,
3327                                                          rssi);
3328                 return;
3329         }
3330
3331 #ifdef CONFIG_FST
3332         if (mgmt->u.action.category == WLAN_ACTION_FST && wpa_s->fst) {
3333                 fst_rx_action(wpa_s->fst, mgmt, len);
3334                 return;
3335         }
3336 #endif /* CONFIG_FST */
3337
3338         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
3339                            category, payload, plen, freq);
3340         if (wpa_s->ifmsh)
3341                 mesh_mpm_action_rx(wpa_s, mgmt, len);
3342 }
3343
3344
3345 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
3346                                              union wpa_event_data *event)
3347 {
3348         struct wpa_freq_range_list *list;
3349         char *str = NULL;
3350
3351         list = &event->freq_range;
3352
3353         if (list->num)
3354                 str = freq_range_list_str(list);
3355         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
3356                 str ? str : "");
3357
3358 #ifdef CONFIG_P2P
3359         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
3360                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
3361                         __func__);
3362         } else {
3363                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
3364
3365                 /*
3366                  * The update channel flow will also take care of moving a GO
3367                  * from the unsafe frequency if needed.
3368                  */
3369                 wpas_p2p_update_channel_list(wpa_s,
3370                                              WPAS_P2P_CHANNEL_UPDATE_AVOID);
3371         }
3372 #endif /* CONFIG_P2P */
3373
3374         os_free(str);
3375 }
3376
3377
3378 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3379                                             union wpa_event_data *data)
3380 {
3381         wpa_dbg(wpa_s, MSG_DEBUG,
3382                 "Connection authorized by device, previous state %d",
3383                 wpa_s->wpa_state);
3384         if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3385                 wpa_supplicant_cancel_auth_timeout(wpa_s);
3386                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3387                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3388                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3389         }
3390         wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3391         wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3392                                data->assoc_info.ptk_kck_len,
3393                                data->assoc_info.ptk_kek,
3394                                data->assoc_info.ptk_kek_len);
3395 }
3396
3397
3398 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3399                           union wpa_event_data *data)
3400 {
3401         struct wpa_supplicant *wpa_s = ctx;
3402         int resched;
3403
3404         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3405             event != EVENT_INTERFACE_ENABLED &&
3406             event != EVENT_INTERFACE_STATUS &&
3407             event != EVENT_SCAN_RESULTS &&
3408             event != EVENT_SCHED_SCAN_STOPPED) {
3409                 wpa_dbg(wpa_s, MSG_DEBUG,
3410                         "Ignore event %s (%d) while interface is disabled",
3411                         event_to_string(event), event);
3412                 return;
3413         }
3414
3415 #ifndef CONFIG_NO_STDOUT_DEBUG
3416 {
3417         int level = MSG_DEBUG;
3418
3419         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3420                 const struct ieee80211_hdr *hdr;
3421                 u16 fc;
3422                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3423                 fc = le_to_host16(hdr->frame_control);
3424                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3425                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3426                         level = MSG_EXCESSIVE;
3427         }
3428
3429         wpa_dbg(wpa_s, level, "Event %s (%d) received",
3430                 event_to_string(event), event);
3431 }
3432 #endif /* CONFIG_NO_STDOUT_DEBUG */
3433
3434         switch (event) {
3435         case EVENT_AUTH:
3436 #ifdef CONFIG_FST
3437                 if (!wpas_fst_update_mbie(wpa_s, data->auth.ies,
3438                                           data->auth.ies_len))
3439                         wpa_printf(MSG_DEBUG,
3440                                    "FST: MB IEs updated from auth IE");
3441 #endif /* CONFIG_FST */
3442                 sme_event_auth(wpa_s, data);
3443                 break;
3444         case EVENT_ASSOC:
3445                 wpa_supplicant_event_assoc(wpa_s, data);
3446                 if (data && data->assoc_info.authorized)
3447                         wpa_supplicant_event_assoc_auth(wpa_s, data);
3448                 if (data) {
3449                         wpa_msg(wpa_s, MSG_INFO,
3450                                 WPA_EVENT_SUBNET_STATUS_UPDATE "status=%u",
3451                                 data->assoc_info.subnet_status);
3452                 }
3453                 break;
3454         case EVENT_DISASSOC:
3455                 wpas_event_disassoc(wpa_s,
3456                                     data ? &data->disassoc_info : NULL);
3457                 break;
3458         case EVENT_DEAUTH:
3459                 wpas_event_deauth(wpa_s,
3460                                   data ? &data->deauth_info : NULL);
3461                 break;
3462         case EVENT_MICHAEL_MIC_FAILURE:
3463                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3464                 break;
3465 #ifndef CONFIG_NO_SCAN_PROCESSING
3466         case EVENT_SCAN_STARTED:
3467                 if (wpa_s->own_scan_requested ||
3468                     (data && !data->scan_info.external_scan)) {
3469                         struct os_reltime diff;
3470
3471                         os_get_reltime(&wpa_s->scan_start_time);
3472                         os_reltime_sub(&wpa_s->scan_start_time,
3473                                        &wpa_s->scan_trigger_time, &diff);
3474                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3475                                 diff.sec, diff.usec);
3476                         wpa_s->own_scan_requested = 0;
3477                         wpa_s->own_scan_running = 1;
3478                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3479                             wpa_s->manual_scan_use_id) {
3480                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3481                                              WPA_EVENT_SCAN_STARTED "id=%u",
3482                                              wpa_s->manual_scan_id);
3483                         } else {
3484                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3485                                              WPA_EVENT_SCAN_STARTED);
3486                         }
3487                 } else {
3488                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3489                         wpa_s->radio->external_scan_running = 1;
3490                         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3491                 }
3492                 break;
3493         case EVENT_SCAN_RESULTS:
3494                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3495                         wpa_s->scan_res_handler = NULL;
3496                         wpa_s->own_scan_running = 0;
3497                         wpa_s->radio->external_scan_running = 0;
3498                         wpa_s->last_scan_req = NORMAL_SCAN_REQ;
3499                         break;
3500                 }
3501
3502                 if (!(data && data->scan_info.external_scan) &&
3503                     os_reltime_initialized(&wpa_s->scan_start_time)) {
3504                         struct os_reltime now, diff;
3505                         os_get_reltime(&now);
3506                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3507                         wpa_s->scan_start_time.sec = 0;
3508                         wpa_s->scan_start_time.usec = 0;
3509                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3510                                 diff.sec, diff.usec);
3511                 }
3512                 if (wpa_supplicant_event_scan_results(wpa_s, data))
3513                         break; /* interface may have been removed */
3514                 if (!(data && data->scan_info.external_scan))
3515                         wpa_s->own_scan_running = 0;
3516                 if (data && data->scan_info.nl_scan_event)
3517                         wpa_s->radio->external_scan_running = 0;
3518                 radio_work_check_next(wpa_s);
3519                 break;
3520 #endif /* CONFIG_NO_SCAN_PROCESSING */
3521         case EVENT_ASSOCINFO:
3522                 wpa_supplicant_event_associnfo(wpa_s, data);
3523                 break;
3524         case EVENT_INTERFACE_STATUS:
3525                 wpa_supplicant_event_interface_status(wpa_s, data);
3526                 break;
3527         case EVENT_PMKID_CANDIDATE:
3528                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3529                 break;
3530 #ifdef CONFIG_PEERKEY
3531         case EVENT_STKSTART:
3532                 wpa_supplicant_event_stkstart(wpa_s, data);
3533                 break;
3534 #endif /* CONFIG_PEERKEY */
3535 #ifdef CONFIG_TDLS
3536         case EVENT_TDLS:
3537                 wpa_supplicant_event_tdls(wpa_s, data);
3538                 break;
3539 #endif /* CONFIG_TDLS */
3540 #ifdef CONFIG_WNM
3541         case EVENT_WNM:
3542                 wpa_supplicant_event_wnm(wpa_s, data);
3543                 break;
3544 #endif /* CONFIG_WNM */
3545 #ifdef CONFIG_IEEE80211R
3546         case EVENT_FT_RESPONSE:
3547                 wpa_supplicant_event_ft_response(wpa_s, data);
3548                 break;
3549 #endif /* CONFIG_IEEE80211R */
3550 #ifdef CONFIG_IBSS_RSN
3551         case EVENT_IBSS_RSN_START:
3552                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3553                 break;
3554 #endif /* CONFIG_IBSS_RSN */
3555         case EVENT_ASSOC_REJECT:
3556                 if (data->assoc_reject.bssid)
3557                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3558                                 "bssid=" MACSTR " status_code=%u%s",
3559                                 MAC2STR(data->assoc_reject.bssid),
3560                                 data->assoc_reject.status_code,
3561                                 data->assoc_reject.timed_out ? " timeout" : "");
3562                 else
3563                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3564                                 "status_code=%u%s",
3565                                 data->assoc_reject.status_code,
3566                                 data->assoc_reject.timed_out ? " timeout" : "");
3567                 wpa_s->assoc_status_code = data->assoc_reject.status_code;
3568                 wpas_notify_assoc_status_code(wpa_s);
3569                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3570                         sme_event_assoc_reject(wpa_s, data);
3571                 else {
3572                         const u8 *bssid = data->assoc_reject.bssid;
3573                         if (bssid == NULL || is_zero_ether_addr(bssid))
3574                                 bssid = wpa_s->pending_bssid;
3575                         wpas_connection_failed(wpa_s, bssid);
3576                         wpa_supplicant_mark_disassoc(wpa_s);
3577                 }
3578                 break;
3579         case EVENT_AUTH_TIMED_OUT:
3580                 /* It is possible to get this event from earlier connection */
3581                 if (wpa_s->current_ssid &&
3582                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3583                         wpa_dbg(wpa_s, MSG_DEBUG,
3584                                 "Ignore AUTH_TIMED_OUT in mesh configuration");
3585                         break;
3586                 }
3587                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3588                         sme_event_auth_timed_out(wpa_s, data);
3589                 break;
3590         case EVENT_ASSOC_TIMED_OUT:
3591                 /* It is possible to get this event from earlier connection */
3592                 if (wpa_s->current_ssid &&
3593                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3594                         wpa_dbg(wpa_s, MSG_DEBUG,
3595                                 "Ignore ASSOC_TIMED_OUT in mesh configuration");
3596                         break;
3597                 }
3598                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3599                         sme_event_assoc_timed_out(wpa_s, data);
3600                 break;
3601         case EVENT_TX_STATUS:
3602                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3603                         " type=%d stype=%d",
3604                         MAC2STR(data->tx_status.dst),
3605                         data->tx_status.type, data->tx_status.stype);
3606 #ifdef CONFIG_AP
3607                 if (wpa_s->ap_iface == NULL) {
3608 #ifdef CONFIG_OFFCHANNEL
3609                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3610                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3611                                 offchannel_send_action_tx_status(
3612                                         wpa_s, data->tx_status.dst,
3613                                         data->tx_status.data,
3614                                         data->tx_status.data_len,
3615                                         data->tx_status.ack ?
3616                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3617                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3618 #endif /* CONFIG_OFFCHANNEL */
3619                         break;
3620                 }
3621 #endif /* CONFIG_AP */
3622 #ifdef CONFIG_OFFCHANNEL
3623                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3624                         MACSTR, MAC2STR(wpa_s->p2pdev->pending_action_dst));
3625                 /*
3626                  * Catch TX status events for Action frames we sent via group
3627                  * interface in GO mode, or via standalone AP interface.
3628                  * Note, wpa_s->p2pdev will be the same as wpa_s->parent,
3629                  * except when the primary interface is used as a GO interface
3630                  * (for drivers which do not have group interface concurrency)
3631                  */
3632                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3633                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3634                     os_memcmp(wpa_s->p2pdev->pending_action_dst,
3635                               data->tx_status.dst, ETH_ALEN) == 0) {
3636                         offchannel_send_action_tx_status(
3637                                 wpa_s->p2pdev, data->tx_status.dst,
3638                                 data->tx_status.data,
3639                                 data->tx_status.data_len,
3640                                 data->tx_status.ack ?
3641                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3642                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3643                         break;
3644                 }
3645 #endif /* CONFIG_OFFCHANNEL */
3646 #ifdef CONFIG_AP
3647                 switch (data->tx_status.type) {
3648                 case WLAN_FC_TYPE_MGMT:
3649                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3650                                       data->tx_status.data_len,
3651                                       data->tx_status.stype,
3652                                       data->tx_status.ack);
3653                         break;
3654                 case WLAN_FC_TYPE_DATA:
3655                         ap_tx_status(wpa_s, data->tx_status.dst,
3656                                      data->tx_status.data,
3657                                      data->tx_status.data_len,
3658                                      data->tx_status.ack);
3659                         break;
3660                 }
3661 #endif /* CONFIG_AP */
3662                 break;
3663 #ifdef CONFIG_AP
3664         case EVENT_EAPOL_TX_STATUS:
3665                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3666                                    data->eapol_tx_status.data,
3667                                    data->eapol_tx_status.data_len,
3668                                    data->eapol_tx_status.ack);
3669                 break;
3670         case EVENT_DRIVER_CLIENT_POLL_OK:
3671                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3672                 break;
3673         case EVENT_RX_FROM_UNKNOWN:
3674                 if (wpa_s->ap_iface == NULL)
3675                         break;
3676                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3677                                        data->rx_from_unknown.wds);
3678                 break;
3679         case EVENT_CH_SWITCH:
3680                 if (!data || !wpa_s->current_ssid)
3681                         break;
3682
3683                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CHANNEL_SWITCH
3684                         "freq=%d ht_enabled=%d ch_offset=%d ch_width=%s cf1=%d cf2=%d",
3685                         data->ch_switch.freq,
3686                         data->ch_switch.ht_enabled,
3687                         data->ch_switch.ch_offset,
3688                         channel_width_to_string(data->ch_switch.ch_width),
3689                         data->ch_switch.cf1,
3690                         data->ch_switch.cf2);
3691
3692                 wpa_s->assoc_freq = data->ch_switch.freq;
3693                 wpa_s->current_ssid->frequency = data->ch_switch.freq;
3694
3695                 if (wpa_s->current_ssid->mode == WPAS_MODE_AP ||
3696                     wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO ||
3697                     wpa_s->current_ssid->mode ==
3698                     WPAS_MODE_P2P_GROUP_FORMATION) {
3699                         wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3700                                           data->ch_switch.ht_enabled,
3701                                           data->ch_switch.ch_offset,
3702                                           data->ch_switch.ch_width,
3703                                           data->ch_switch.cf1,
3704                                           data->ch_switch.cf2);
3705                 }
3706
3707                 wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_CS);
3708                 break;
3709 #ifdef NEED_AP_MLME
3710         case EVENT_DFS_RADAR_DETECTED:
3711                 if (data)
3712                         wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event);
3713                 break;
3714         case EVENT_DFS_CAC_STARTED:
3715                 if (data)
3716                         wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
3717                 break;
3718         case EVENT_DFS_CAC_FINISHED:
3719                 if (data)
3720                         wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
3721                 break;
3722         case EVENT_DFS_CAC_ABORTED:
3723                 if (data)
3724                         wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
3725                 break;
3726         case EVENT_DFS_NOP_FINISHED:
3727                 if (data)
3728                         wpas_event_dfs_cac_nop_finished(wpa_s,
3729                                                         &data->dfs_event);
3730                 break;
3731 #endif /* NEED_AP_MLME */
3732 #endif /* CONFIG_AP */
3733         case EVENT_RX_MGMT: {
3734                 u16 fc, stype;
3735                 const struct ieee80211_mgmt *mgmt;
3736
3737 #ifdef CONFIG_TESTING_OPTIONS
3738                 if (wpa_s->ext_mgmt_frame_handling) {
3739                         struct rx_mgmt *rx = &data->rx_mgmt;
3740                         size_t hex_len = 2 * rx->frame_len + 1;
3741                         char *hex = os_malloc(hex_len);
3742                         if (hex) {
3743                                 wpa_snprintf_hex(hex, hex_len,
3744                                                  rx->frame, rx->frame_len);
3745                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3746                                         rx->freq, rx->datarate, rx->ssi_signal,
3747                                         hex);
3748                                 os_free(hex);
3749                         }
3750                         break;
3751                 }
3752 #endif /* CONFIG_TESTING_OPTIONS */
3753
3754                 mgmt = (const struct ieee80211_mgmt *)
3755                         data->rx_mgmt.frame;
3756                 fc = le_to_host16(mgmt->frame_control);
3757                 stype = WLAN_FC_GET_STYPE(fc);
3758
3759 #ifdef CONFIG_AP
3760                 if (wpa_s->ap_iface == NULL) {
3761 #endif /* CONFIG_AP */
3762 #ifdef CONFIG_P2P
3763                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3764                             data->rx_mgmt.frame_len > IEEE80211_HDRLEN) {
3765                                 const u8 *src = mgmt->sa;
3766                                 const u8 *ie;
3767                                 size_t ie_len;
3768
3769                                 ie = data->rx_mgmt.frame + IEEE80211_HDRLEN;
3770                                 ie_len = data->rx_mgmt.frame_len -
3771                                         IEEE80211_HDRLEN;
3772                                 wpas_p2p_probe_req_rx(
3773                                         wpa_s, src, mgmt->da,
3774                                         mgmt->bssid, ie, ie_len,
3775                                         data->rx_mgmt.freq,
3776                                         data->rx_mgmt.ssi_signal);
3777                                 break;
3778                         }
3779 #endif /* CONFIG_P2P */
3780 #ifdef CONFIG_IBSS_RSN
3781                         if (wpa_s->current_ssid &&
3782                             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3783                             stype == WLAN_FC_STYPE_AUTH &&
3784                             data->rx_mgmt.frame_len >= 30) {
3785                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3786                                 break;
3787                         }
3788 #endif /* CONFIG_IBSS_RSN */
3789
3790                         if (stype == WLAN_FC_STYPE_ACTION) {
3791                                 wpas_event_rx_mgmt_action(
3792                                         wpa_s, data->rx_mgmt.frame,
3793                                         data->rx_mgmt.frame_len,
3794                                         data->rx_mgmt.freq,
3795                                         data->rx_mgmt.ssi_signal);
3796                                 break;
3797                         }
3798
3799                         if (wpa_s->ifmsh) {
3800                                 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3801                                 break;
3802                         }
3803
3804                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3805                                 "management frame in non-AP mode");
3806                         break;
3807 #ifdef CONFIG_AP
3808                 }
3809
3810                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3811                     data->rx_mgmt.frame_len > IEEE80211_HDRLEN) {
3812                         const u8 *ie;
3813                         size_t ie_len;
3814
3815                         ie = data->rx_mgmt.frame + IEEE80211_HDRLEN;
3816                         ie_len = data->rx_mgmt.frame_len - IEEE80211_HDRLEN;
3817
3818                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3819                                          mgmt->bssid, ie, ie_len,
3820                                          data->rx_mgmt.ssi_signal);
3821                 }
3822
3823                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3824 #endif /* CONFIG_AP */
3825                 break;
3826                 }
3827         case EVENT_RX_PROBE_REQ:
3828                 if (data->rx_probe_req.sa == NULL ||
3829                     data->rx_probe_req.ie == NULL)
3830                         break;
3831 #ifdef CONFIG_AP
3832                 if (wpa_s->ap_iface) {
3833                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3834                                              data->rx_probe_req.sa,
3835                                              data->rx_probe_req.da,
3836                                              data->rx_probe_req.bssid,
3837                                              data->rx_probe_req.ie,
3838                                              data->rx_probe_req.ie_len,
3839                                              data->rx_probe_req.ssi_signal);
3840                         break;
3841                 }
3842 #endif /* CONFIG_AP */
3843                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3844                                       data->rx_probe_req.da,
3845                                       data->rx_probe_req.bssid,
3846                                       data->rx_probe_req.ie,
3847                                       data->rx_probe_req.ie_len,
3848                                       0,
3849                                       data->rx_probe_req.ssi_signal);
3850                 break;
3851         case EVENT_REMAIN_ON_CHANNEL:
3852 #ifdef CONFIG_OFFCHANNEL
3853                 offchannel_remain_on_channel_cb(
3854                         wpa_s, data->remain_on_channel.freq,
3855                         data->remain_on_channel.duration);
3856 #endif /* CONFIG_OFFCHANNEL */
3857                 wpas_p2p_remain_on_channel_cb(
3858                         wpa_s, data->remain_on_channel.freq,
3859                         data->remain_on_channel.duration);
3860                 break;
3861         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3862 #ifdef CONFIG_OFFCHANNEL
3863                 offchannel_cancel_remain_on_channel_cb(
3864                         wpa_s, data->remain_on_channel.freq);
3865 #endif /* CONFIG_OFFCHANNEL */
3866                 wpas_p2p_cancel_remain_on_channel_cb(
3867                         wpa_s, data->remain_on_channel.freq);
3868                 break;
3869         case EVENT_EAPOL_RX:
3870                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3871                                         data->eapol_rx.data,
3872                                         data->eapol_rx.data_len);
3873                 break;
3874         case EVENT_SIGNAL_CHANGE:
3875                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3876                         "above=%d signal=%d noise=%d txrate=%d",
3877                         data->signal_change.above_threshold,
3878                         data->signal_change.current_signal,
3879                         data->signal_change.current_noise,
3880                         data->signal_change.current_txrate);
3881                 wpa_bss_update_level(wpa_s->current_bss,
3882                                      data->signal_change.current_signal);
3883                 bgscan_notify_signal_change(
3884                         wpa_s, data->signal_change.above_threshold,
3885                         data->signal_change.current_signal,
3886                         data->signal_change.current_noise,
3887                         data->signal_change.current_txrate);
3888                 break;
3889         case EVENT_INTERFACE_ENABLED:
3890                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3891                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3892                         wpa_supplicant_update_mac_addr(wpa_s);
3893                         if (wpa_s->p2p_mgmt) {
3894                                 wpa_supplicant_set_state(wpa_s,
3895                                                          WPA_DISCONNECTED);
3896                                 break;
3897                         }
3898
3899 #ifdef CONFIG_AP
3900                         if (!wpa_s->ap_iface) {
3901                                 wpa_supplicant_set_state(wpa_s,
3902                                                          WPA_DISCONNECTED);
3903                                 wpa_s->scan_req = NORMAL_SCAN_REQ;
3904                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3905                         } else
3906                                 wpa_supplicant_set_state(wpa_s,
3907                                                          WPA_COMPLETED);
3908 #else /* CONFIG_AP */
3909                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3910                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3911 #endif /* CONFIG_AP */
3912                 }
3913                 break;
3914         case EVENT_INTERFACE_DISABLED:
3915                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3916 #ifdef CONFIG_P2P
3917                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3918                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3919                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3920                         /*
3921                          * Mark interface disabled if this happens to end up not
3922                          * being removed as a separate P2P group interface.
3923                          */
3924                         wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3925                         /*
3926                          * The interface was externally disabled. Remove
3927                          * it assuming an external entity will start a
3928                          * new session if needed.
3929                          */
3930                         if (wpa_s->current_ssid &&
3931                             wpa_s->current_ssid->p2p_group)
3932                                 wpas_p2p_interface_unavailable(wpa_s);
3933                         else
3934                                 wpas_p2p_disconnect(wpa_s);
3935                         /*
3936                          * wpa_s instance may have been freed, so must not use
3937                          * it here anymore.
3938                          */
3939                         break;
3940                 }
3941                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3942                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3943                         /* This radio work will be cancelled, so clear P2P
3944                          * state as well.
3945                          */
3946                         p2p_stop_find(wpa_s->global->p2p);
3947                 }
3948 #endif /* CONFIG_P2P */
3949
3950                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3951                         /*
3952                          * Indicate disconnection to keep ctrl_iface events
3953                          * consistent.
3954                          */
3955                         wpa_supplicant_event_disassoc(
3956                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3957                 }
3958                 wpa_supplicant_mark_disassoc(wpa_s);
3959                 radio_remove_works(wpa_s, NULL, 0);
3960
3961                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3962                 break;
3963         case EVENT_CHANNEL_LIST_CHANGED:
3964                 wpa_supplicant_update_channel_list(
3965                         wpa_s, &data->channel_list_changed);
3966                 break;
3967         case EVENT_INTERFACE_UNAVAILABLE:
3968                 wpas_p2p_interface_unavailable(wpa_s);
3969                 break;
3970         case EVENT_BEST_CHANNEL:
3971                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3972                         "(%d %d %d)",
3973                         data->best_chan.freq_24, data->best_chan.freq_5,
3974                         data->best_chan.freq_overall);
3975                 wpa_s->best_24_freq = data->best_chan.freq_24;
3976                 wpa_s->best_5_freq = data->best_chan.freq_5;
3977                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3978                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3979                                               data->best_chan.freq_5,
3980                                               data->best_chan.freq_overall);
3981                 break;
3982         case EVENT_UNPROT_DEAUTH:
3983                 wpa_supplicant_event_unprot_deauth(wpa_s,
3984                                                    &data->unprot_deauth);
3985                 break;
3986         case EVENT_UNPROT_DISASSOC:
3987                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3988                                                      &data->unprot_disassoc);
3989                 break;
3990         case EVENT_STATION_LOW_ACK:
3991 #ifdef CONFIG_AP
3992                 if (wpa_s->ap_iface && data)
3993                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3994                                                   data->low_ack.addr);
3995 #endif /* CONFIG_AP */
3996 #ifdef CONFIG_TDLS
3997                 if (data)
3998                         wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3999                                                           data->low_ack.addr);
4000 #endif /* CONFIG_TDLS */
4001                 break;
4002         case EVENT_IBSS_PEER_LOST:
4003 #ifdef CONFIG_IBSS_RSN
4004                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
4005 #endif /* CONFIG_IBSS_RSN */
4006                 break;
4007         case EVENT_DRIVER_GTK_REKEY:
4008                 if (os_memcmp(data->driver_gtk_rekey.bssid,
4009                               wpa_s->bssid, ETH_ALEN))
4010                         break;
4011                 if (!wpa_s->wpa)
4012                         break;
4013                 wpa_sm_update_replay_ctr(wpa_s->wpa,
4014                                          data->driver_gtk_rekey.replay_ctr);
4015                 break;
4016         case EVENT_SCHED_SCAN_STOPPED:
4017                 wpa_s->sched_scanning = 0;
4018                 resched = wpa_s->scanning && wpas_scan_scheduled(wpa_s);
4019                 wpa_supplicant_notify_scanning(wpa_s, 0);
4020
4021                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
4022                         break;
4023
4024                 /*
4025                  * Start a new sched scan to continue searching for more SSIDs
4026                  * either if timed out or PNO schedule scan is pending.
4027                  */
4028                 if (wpa_s->sched_scan_timed_out) {
4029                         wpa_supplicant_req_sched_scan(wpa_s);
4030                 } else if (wpa_s->pno_sched_pending) {
4031                         wpa_s->pno_sched_pending = 0;
4032                         wpas_start_pno(wpa_s);
4033                 } else if (resched) {
4034                         wpa_supplicant_req_scan(wpa_s, 0, 0);
4035                 }
4036
4037                 break;
4038         case EVENT_WPS_BUTTON_PUSHED:
4039 #ifdef CONFIG_WPS
4040                 wpas_wps_start_pbc(wpa_s, NULL, 0);
4041 #endif /* CONFIG_WPS */
4042                 break;
4043         case EVENT_AVOID_FREQUENCIES:
4044                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
4045                 break;
4046         case EVENT_CONNECT_FAILED_REASON:
4047 #ifdef CONFIG_AP
4048                 if (!wpa_s->ap_iface || !data)
4049                         break;
4050                 hostapd_event_connect_failed_reason(
4051                         wpa_s->ap_iface->bss[0],
4052                         data->connect_failed_reason.addr,
4053                         data->connect_failed_reason.code);
4054 #endif /* CONFIG_AP */
4055                 break;
4056         case EVENT_NEW_PEER_CANDIDATE:
4057 #ifdef CONFIG_MESH
4058                 if (!wpa_s->ifmsh || !data)
4059                         break;
4060                 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
4061                                      data->mesh_peer.ies,
4062                                      data->mesh_peer.ie_len);
4063 #endif /* CONFIG_MESH */
4064                 break;
4065         case EVENT_SURVEY:
4066 #ifdef CONFIG_AP
4067                 if (!wpa_s->ap_iface)
4068                         break;
4069                 hostapd_event_get_survey(wpa_s->ap_iface,
4070                                          &data->survey_results);
4071 #endif /* CONFIG_AP */
4072                 break;
4073         case EVENT_ACS_CHANNEL_SELECTED:
4074 #ifdef CONFIG_ACS
4075                 if (!wpa_s->ap_iface)
4076                         break;
4077                 hostapd_acs_channel_selected(wpa_s->ap_iface->bss[0],
4078                                              &data->acs_selected_channels);
4079 #endif /* CONFIG_ACS */
4080                 break;
4081         case EVENT_P2P_LO_STOP:
4082 #ifdef CONFIG_P2P
4083                 wpa_s->p2p_lo_started = 0;
4084                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_LISTEN_OFFLOAD_STOP
4085                         P2P_LISTEN_OFFLOAD_STOP_REASON "reason=%d",
4086                         data->p2p_lo_stop.reason_code);
4087 #endif /* CONFIG_P2P */
4088                 break;
4089         default:
4090                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
4091                 break;
4092         }
4093 }
4094
4095
4096 void wpa_supplicant_event_global(void *ctx, enum wpa_event_type event,
4097                                  union wpa_event_data *data)
4098 {
4099         struct wpa_supplicant *wpa_s;
4100
4101         if (event != EVENT_INTERFACE_STATUS)
4102                 return;
4103
4104         wpa_s = wpa_supplicant_get_iface(ctx, data->interface_status.ifname);
4105         if (wpa_s && wpa_s->driver->get_ifindex) {
4106                 unsigned int ifindex;
4107
4108                 ifindex = wpa_s->driver->get_ifindex(wpa_s->drv_priv);
4109                 if (ifindex != data->interface_status.ifindex) {
4110                         wpa_dbg(wpa_s, MSG_DEBUG,
4111                                 "interface status ifindex %d mismatch (%d)",
4112                                 ifindex, data->interface_status.ifindex);
4113                         return;
4114                 }
4115         }
4116 #ifdef CONFIG_MATCH_IFACE
4117         else if (data->interface_status.ievent == EVENT_INTERFACE_ADDED) {
4118                 struct wpa_interface *wpa_i;
4119
4120                 wpa_i = wpa_supplicant_match_iface(
4121                         ctx, data->interface_status.ifname);
4122                 if (!wpa_i)
4123                         return;
4124                 wpa_s = wpa_supplicant_add_iface(ctx, wpa_i, NULL);
4125                 os_free(wpa_i);
4126                 if (wpa_s)
4127                         wpa_s->matched = 1;
4128         }
4129 #endif /* CONFIG_MATCH_IFACE */
4130
4131         if (wpa_s)
4132                 wpa_supplicant_event(wpa_s, event, data);
4133 }