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 #ifdef CONFIG_TESTING_OPTIONS
1105                 if (wpa_s->ignore_assoc_disallow)
1106                         goto skip_assoc_disallow;
1107 #endif /* CONFIG_TESTING_OPTIONS */
1108                 assoc_disallow = wpas_mbo_get_bss_attr(
1109                         bss, MBO_ATTR_ID_ASSOC_DISALLOW);
1110                 if (assoc_disallow && assoc_disallow[1] >= 1) {
1111                         wpa_dbg(wpa_s, MSG_DEBUG,
1112                                 "   skip - MBO association disallowed (reason %u)",
1113                                 assoc_disallow[2]);
1114                         continue;
1115                 }
1116
1117                 if (wpa_is_bss_tmp_disallowed(wpa_s, bss->bssid)) {
1118                         wpa_dbg(wpa_s, MSG_DEBUG,
1119                                 "   skip - MBO retry delay has not passed yet");
1120                         continue;
1121                 }
1122 #ifdef CONFIG_TESTING_OPTIONS
1123         skip_assoc_disallow:
1124 #endif /* CONFIG_TESTING_OPTIONS */
1125 #endif /* CONFIG_MBO */
1126
1127                 /* Matching configuration found */
1128                 return ssid;
1129         }
1130
1131         /* No matching configuration found */
1132         return NULL;
1133 }
1134
1135
1136 static struct wpa_bss *
1137 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
1138                           struct wpa_ssid *group,
1139                           struct wpa_ssid **selected_ssid,
1140                           int only_first_ssid)
1141 {
1142         unsigned int i;
1143
1144         if (only_first_ssid)
1145                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
1146                         group->id);
1147         else
1148                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
1149                         group->priority);
1150
1151         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
1152                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
1153                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
1154                                                     only_first_ssid);
1155                 if (!*selected_ssid)
1156                         continue;
1157                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
1158                         " ssid='%s'",
1159                         MAC2STR(bss->bssid),
1160                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
1161                 return bss;
1162         }
1163
1164         return NULL;
1165 }
1166
1167
1168 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1169                                              struct wpa_ssid **selected_ssid)
1170 {
1171         struct wpa_bss *selected = NULL;
1172         int prio;
1173         struct wpa_ssid *next_ssid = NULL;
1174         struct wpa_ssid *ssid;
1175
1176         if (wpa_s->last_scan_res == NULL ||
1177             wpa_s->last_scan_res_used == 0)
1178                 return NULL; /* no scan results from last update */
1179
1180         if (wpa_s->next_ssid) {
1181                 /* check that next_ssid is still valid */
1182                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1183                         if (ssid == wpa_s->next_ssid)
1184                                 break;
1185                 }
1186                 next_ssid = ssid;
1187                 wpa_s->next_ssid = NULL;
1188         }
1189
1190         while (selected == NULL) {
1191                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1192                         if (next_ssid && next_ssid->priority ==
1193                             wpa_s->conf->pssid[prio]->priority) {
1194                                 selected = wpa_supplicant_select_bss(
1195                                         wpa_s, next_ssid, selected_ssid, 1);
1196                                 if (selected)
1197                                         break;
1198                         }
1199                         selected = wpa_supplicant_select_bss(
1200                                 wpa_s, wpa_s->conf->pssid[prio],
1201                                 selected_ssid, 0);
1202                         if (selected)
1203                                 break;
1204                 }
1205
1206                 if (selected == NULL && wpa_s->blacklist &&
1207                     !wpa_s->countermeasures) {
1208                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1209                                 "blacklist and try again");
1210                         wpa_blacklist_clear(wpa_s);
1211                         wpa_s->blacklist_cleared++;
1212                 } else if (selected == NULL)
1213                         break;
1214         }
1215
1216         ssid = *selected_ssid;
1217         if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set &&
1218             !ssid->passphrase && !ssid->ext_psk) {
1219                 const char *field_name, *txt = NULL;
1220
1221                 wpa_dbg(wpa_s, MSG_DEBUG,
1222                         "PSK/passphrase not yet available for the selected network");
1223
1224                 wpas_notify_network_request(wpa_s, ssid,
1225                                             WPA_CTRL_REQ_PSK_PASSPHRASE, NULL);
1226
1227                 field_name = wpa_supplicant_ctrl_req_to_string(
1228                         WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt);
1229                 if (field_name == NULL)
1230                         return NULL;
1231
1232                 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
1233
1234                 selected = NULL;
1235         }
1236
1237         return selected;
1238 }
1239
1240
1241 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1242                                         int timeout_sec, int timeout_usec)
1243 {
1244         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1245                 /*
1246                  * No networks are enabled; short-circuit request so
1247                  * we don't wait timeout seconds before transitioning
1248                  * to INACTIVE state.
1249                  */
1250                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1251                         "since there are no enabled networks");
1252                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1253                 return;
1254         }
1255
1256         wpa_s->scan_for_connection = 1;
1257         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1258 }
1259
1260
1261 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1262                            struct wpa_bss *selected,
1263                            struct wpa_ssid *ssid)
1264 {
1265         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1266                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1267                         "PBC session overlap");
1268                 wpas_notify_wps_event_pbc_overlap(wpa_s);
1269 #ifdef CONFIG_P2P
1270                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1271                     wpa_s->p2p_in_provisioning) {
1272                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1273                                                wpa_s, NULL);
1274                         return -1;
1275                 }
1276 #endif /* CONFIG_P2P */
1277
1278 #ifdef CONFIG_WPS
1279                 wpas_wps_pbc_overlap(wpa_s);
1280                 wpas_wps_cancel(wpa_s);
1281 #endif /* CONFIG_WPS */
1282                 return -1;
1283         }
1284
1285         wpa_msg(wpa_s, MSG_DEBUG,
1286                 "Considering connect request: reassociate: %d  selected: "
1287                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1288                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1289                 wpa_s->reassociate, MAC2STR(selected->bssid),
1290                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1291                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1292                 ssid, wpa_s->current_ssid);
1293
1294         /*
1295          * Do not trigger new association unless the BSSID has changed or if
1296          * reassociation is requested. If we are in process of associating with
1297          * the selected BSSID, do not trigger new attempt.
1298          */
1299         if (wpa_s->reassociate ||
1300             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1301              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1302                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1303               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1304                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1305                0) ||
1306               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1307                ssid != wpa_s->current_ssid)))) {
1308                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1309                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1310                         return 0;
1311                 }
1312                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1313                         MAC2STR(selected->bssid));
1314                 wpa_supplicant_associate(wpa_s, selected, ssid);
1315         } else {
1316                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1317                         "connect with the selected AP");
1318         }
1319
1320         return 0;
1321 }
1322
1323
1324 static struct wpa_ssid *
1325 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1326 {
1327         int prio;
1328         struct wpa_ssid *ssid;
1329
1330         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1331                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1332                 {
1333                         if (wpas_network_disabled(wpa_s, ssid))
1334                                 continue;
1335                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1336                             ssid->mode == IEEE80211_MODE_AP ||
1337                             ssid->mode == IEEE80211_MODE_MESH)
1338                                 return ssid;
1339                 }
1340         }
1341         return NULL;
1342 }
1343
1344
1345 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1346  * on BSS added and BSS changed events */
1347 static void wpa_supplicant_rsn_preauth_scan_results(
1348         struct wpa_supplicant *wpa_s)
1349 {
1350         struct wpa_bss *bss;
1351
1352         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1353                 return;
1354
1355         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1356                 const u8 *ssid, *rsn;
1357
1358                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1359                 if (ssid == NULL)
1360                         continue;
1361
1362                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1363                 if (rsn == NULL)
1364                         continue;
1365
1366                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1367         }
1368
1369 }
1370
1371
1372 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1373                                        struct wpa_bss *selected,
1374                                        struct wpa_ssid *ssid)
1375 {
1376         struct wpa_bss *current_bss = NULL;
1377 #ifndef CONFIG_NO_ROAMING
1378         int min_diff;
1379         int to_5ghz;
1380 #endif /* CONFIG_NO_ROAMING */
1381
1382         if (wpa_s->reassociate)
1383                 return 1; /* explicit request to reassociate */
1384         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1385                 return 1; /* we are not associated; continue */
1386         if (wpa_s->current_ssid == NULL)
1387                 return 1; /* unknown current SSID */
1388         if (wpa_s->current_ssid != ssid)
1389                 return 1; /* different network block */
1390
1391         if (wpas_driver_bss_selection(wpa_s))
1392                 return 0; /* Driver-based roaming */
1393
1394         if (wpa_s->current_ssid->ssid)
1395                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1396                                           wpa_s->current_ssid->ssid,
1397                                           wpa_s->current_ssid->ssid_len);
1398         if (!current_bss)
1399                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1400
1401         if (!current_bss)
1402                 return 1; /* current BSS not seen in scan results */
1403
1404         if (current_bss == selected)
1405                 return 0;
1406
1407         if (selected->last_update_idx > current_bss->last_update_idx)
1408                 return 1; /* current BSS not seen in the last scan */
1409
1410 #ifndef CONFIG_NO_ROAMING
1411         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1412         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
1413                 " level=%d snr=%d est_throughput=%u",
1414                 MAC2STR(current_bss->bssid), current_bss->level,
1415                 current_bss->snr, current_bss->est_throughput);
1416         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
1417                 " level=%d snr=%d est_throughput=%u",
1418                 MAC2STR(selected->bssid), selected->level,
1419                 selected->snr, selected->est_throughput);
1420
1421         if (wpa_s->current_ssid->bssid_set &&
1422             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1423             0) {
1424                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1425                         "has preferred BSSID");
1426                 return 1;
1427         }
1428
1429         if (selected->est_throughput > current_bss->est_throughput + 5000) {
1430                 wpa_dbg(wpa_s, MSG_DEBUG,
1431                         "Allow reassociation - selected BSS has better estimated throughput");
1432                 return 1;
1433         }
1434
1435         to_5ghz = selected->freq > 4000 && current_bss->freq < 4000;
1436
1437         if (current_bss->level < 0 &&
1438             current_bss->level > selected->level + to_5ghz * 2) {
1439                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1440                         "signal level");
1441                 return 0;
1442         }
1443
1444         min_diff = 2;
1445         if (current_bss->level < 0) {
1446                 if (current_bss->level < -85)
1447                         min_diff = 1;
1448                 else if (current_bss->level < -80)
1449                         min_diff = 2;
1450                 else if (current_bss->level < -75)
1451                         min_diff = 3;
1452                 else if (current_bss->level < -70)
1453                         min_diff = 4;
1454                 else
1455                         min_diff = 5;
1456         }
1457         if (to_5ghz) {
1458                 /* Make it easier to move to 5 GHz band */
1459                 if (min_diff > 2)
1460                         min_diff -= 2;
1461                 else
1462                         min_diff = 0;
1463         }
1464         if (abs(current_bss->level - selected->level) < min_diff) {
1465                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1466                         "in signal level");
1467                 return 0;
1468         }
1469
1470         return 1;
1471 #else /* CONFIG_NO_ROAMING */
1472         return 0;
1473 #endif /* CONFIG_NO_ROAMING */
1474 }
1475
1476
1477 /* Return != 0 if no scan results could be fetched or if scan results should not
1478  * be shared with other virtual interfaces. */
1479 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1480                                               union wpa_event_data *data,
1481                                               int own_request)
1482 {
1483         struct wpa_scan_results *scan_res = NULL;
1484         int ret = 0;
1485         int ap = 0;
1486 #ifndef CONFIG_NO_RANDOM_POOL
1487         size_t i, num;
1488 #endif /* CONFIG_NO_RANDOM_POOL */
1489
1490 #ifdef CONFIG_AP
1491         if (wpa_s->ap_iface)
1492                 ap = 1;
1493 #endif /* CONFIG_AP */
1494
1495         wpa_supplicant_notify_scanning(wpa_s, 0);
1496
1497         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1498                                                    data ? &data->scan_info :
1499                                                    NULL, 1);
1500         if (scan_res == NULL) {
1501                 if (wpa_s->conf->ap_scan == 2 || ap ||
1502                     wpa_s->scan_res_handler == scan_only_handler)
1503                         return -1;
1504                 if (!own_request)
1505                         return -1;
1506                 if (data && data->scan_info.external_scan)
1507                         return -1;
1508                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1509                         "scanning again");
1510                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1511                 ret = -1;
1512                 goto scan_work_done;
1513         }
1514
1515 #ifndef CONFIG_NO_RANDOM_POOL
1516         num = scan_res->num;
1517         if (num > 10)
1518                 num = 10;
1519         for (i = 0; i < num; i++) {
1520                 u8 buf[5];
1521                 struct wpa_scan_res *res = scan_res->res[i];
1522                 buf[0] = res->bssid[5];
1523                 buf[1] = res->qual & 0xff;
1524                 buf[2] = res->noise & 0xff;
1525                 buf[3] = res->level & 0xff;
1526                 buf[4] = res->tsf & 0xff;
1527                 random_add_randomness(buf, sizeof(buf));
1528         }
1529 #endif /* CONFIG_NO_RANDOM_POOL */
1530
1531         if (own_request && wpa_s->scan_res_handler &&
1532             !(data && data->scan_info.external_scan)) {
1533                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1534                                          struct wpa_scan_results *scan_res);
1535
1536                 scan_res_handler = wpa_s->scan_res_handler;
1537                 wpa_s->scan_res_handler = NULL;
1538                 scan_res_handler(wpa_s, scan_res);
1539                 ret = -2;
1540                 goto scan_work_done;
1541         }
1542
1543         if (ap) {
1544                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1545 #ifdef CONFIG_AP
1546                 if (wpa_s->ap_iface->scan_cb)
1547                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1548 #endif /* CONFIG_AP */
1549                 goto scan_work_done;
1550         }
1551
1552         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1553                 wpa_s->own_scan_running,
1554                 data ? data->scan_info.external_scan : 0);
1555         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1556             wpa_s->manual_scan_use_id && wpa_s->own_scan_running &&
1557             own_request && !(data && data->scan_info.external_scan)) {
1558                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1559                              wpa_s->manual_scan_id);
1560                 wpa_s->manual_scan_use_id = 0;
1561         } else {
1562                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1563         }
1564         wpas_notify_scan_results(wpa_s);
1565
1566         wpas_notify_scan_done(wpa_s, 1);
1567
1568         if (data && data->scan_info.external_scan) {
1569                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1570                 wpa_scan_results_free(scan_res);
1571                 return 0;
1572         }
1573
1574         if (wnm_scan_process(wpa_s, 1) > 0)
1575                 goto scan_work_done;
1576
1577         if (sme_proc_obss_scan(wpa_s) > 0)
1578                 goto scan_work_done;
1579
1580         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1581                 goto scan_work_done;
1582
1583         if (autoscan_notify_scan(wpa_s, scan_res))
1584                 goto scan_work_done;
1585
1586         if (wpa_s->disconnected) {
1587                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1588                 goto scan_work_done;
1589         }
1590
1591         if (!wpas_driver_bss_selection(wpa_s) &&
1592             bgscan_notify_scan(wpa_s, scan_res) == 1)
1593                 goto scan_work_done;
1594
1595         wpas_wps_update_ap_info(wpa_s, scan_res);
1596
1597         if (wpa_s->wpa_state >= WPA_AUTHENTICATING &&
1598             wpa_s->wpa_state < WPA_COMPLETED)
1599                 goto scan_work_done;
1600
1601         wpa_scan_results_free(scan_res);
1602
1603         if (own_request && wpa_s->scan_work) {
1604                 struct wpa_radio_work *work = wpa_s->scan_work;
1605                 wpa_s->scan_work = NULL;
1606                 radio_work_done(work);
1607         }
1608
1609         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1610
1611 scan_work_done:
1612         wpa_scan_results_free(scan_res);
1613         if (own_request && wpa_s->scan_work) {
1614                 struct wpa_radio_work *work = wpa_s->scan_work;
1615                 wpa_s->scan_work = NULL;
1616                 radio_work_done(work);
1617         }
1618         return ret;
1619 }
1620
1621
1622 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1623                                               int new_scan, int own_request)
1624 {
1625         struct wpa_bss *selected;
1626         struct wpa_ssid *ssid = NULL;
1627         int time_to_reenable = wpas_reenabled_network_time(wpa_s);
1628
1629         if (time_to_reenable > 0) {
1630                 wpa_dbg(wpa_s, MSG_DEBUG,
1631                         "Postpone network selection by %d seconds since all networks are disabled",
1632                         time_to_reenable);
1633                 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
1634                 eloop_register_timeout(time_to_reenable, 0,
1635                                        wpas_network_reenabled, wpa_s, NULL);
1636                 return 0;
1637         }
1638
1639         if (wpa_s->p2p_mgmt)
1640                 return 0; /* no normal connection on p2p_mgmt interface */
1641
1642         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1643
1644 #ifdef CONFIG_MESH
1645         if (wpa_s->ifmsh) {
1646                 wpa_msg(wpa_s, MSG_INFO,
1647                         "Avoiding join because we already joined a mesh group");
1648                 return 0;
1649         }
1650 #endif /* CONFIG_MESH */
1651
1652         if (selected) {
1653                 int skip;
1654                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1655                 if (skip) {
1656                         if (new_scan)
1657                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1658                         return 0;
1659                 }
1660
1661                 if (ssid != wpa_s->current_ssid &&
1662                     wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1663                         wpa_s->own_disconnect_req = 1;
1664                         wpa_supplicant_deauthenticate(
1665                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1666                 }
1667
1668                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1669                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1670                         return -1;
1671                 }
1672                 if (new_scan)
1673                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1674                 /*
1675                  * Do not notify other virtual radios of scan results since we do not
1676                  * want them to start other associations at the same time.
1677                  */
1678                 return 1;
1679         } else {
1680                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1681                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1682                 if (ssid) {
1683                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1684                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1685                         if (new_scan)
1686                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1687                 } else if (own_request) {
1688                         /*
1689                          * No SSID found. If SCAN results are as a result of
1690                          * own scan request and not due to a scan request on
1691                          * another shared interface, try another scan.
1692                          */
1693                         int timeout_sec = wpa_s->scan_interval;
1694                         int timeout_usec = 0;
1695 #ifdef CONFIG_P2P
1696                         int res;
1697
1698                         res = wpas_p2p_scan_no_go_seen(wpa_s);
1699                         if (res == 2)
1700                                 return 2;
1701                         if (res == 1)
1702                                 return 0;
1703
1704                         if (wpa_s->p2p_in_provisioning ||
1705                             wpa_s->show_group_started ||
1706                             wpa_s->p2p_in_invitation) {
1707                                 /*
1708                                  * Use shorter wait during P2P Provisioning
1709                                  * state and during P2P join-a-group operation
1710                                  * to speed up group formation.
1711                                  */
1712                                 timeout_sec = 0;
1713                                 timeout_usec = 250000;
1714                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1715                                                             timeout_usec);
1716                                 return 0;
1717                         }
1718 #endif /* CONFIG_P2P */
1719 #ifdef CONFIG_INTERWORKING
1720                         if (wpa_s->conf->auto_interworking &&
1721                             wpa_s->conf->interworking &&
1722                             wpa_s->conf->cred) {
1723                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1724                                         "start ANQP fetch since no matching "
1725                                         "networks found");
1726                                 wpa_s->network_select = 1;
1727                                 wpa_s->auto_network_select = 1;
1728                                 interworking_start_fetch_anqp(wpa_s);
1729                                 return 1;
1730                         }
1731 #endif /* CONFIG_INTERWORKING */
1732 #ifdef CONFIG_WPS
1733                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1734                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1735                                 timeout_sec = 0;
1736                                 timeout_usec = 500000;
1737                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1738                                                             timeout_usec);
1739                                 return 0;
1740                         }
1741 #endif /* CONFIG_WPS */
1742                         if (wpa_supplicant_req_sched_scan(wpa_s))
1743                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1744                                                             timeout_usec);
1745
1746                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1747                                      WPA_EVENT_NETWORK_NOT_FOUND);
1748                 }
1749         }
1750         return 0;
1751 }
1752
1753
1754 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1755                                              union wpa_event_data *data)
1756 {
1757         struct wpa_supplicant *ifs;
1758         int res;
1759
1760         res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1761         if (res == 2) {
1762                 /*
1763                  * Interface may have been removed, so must not dereference
1764                  * wpa_s after this.
1765                  */
1766                 return 1;
1767         }
1768         if (res != 0) {
1769                 /*
1770                  * If no scan results could be fetched, then no need to
1771                  * notify those interfaces that did not actually request
1772                  * this scan. Similarly, if scan results started a new operation on this
1773                  * interface, do not notify other interfaces to avoid concurrent
1774                  * operations during a connection attempt.
1775                  */
1776                 return 0;
1777         }
1778
1779         /*
1780          * Check other interfaces to see if they share the same radio. If
1781          * so, they get updated with this same scan info.
1782          */
1783         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1784                          radio_list) {
1785                 if (ifs != wpa_s) {
1786                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1787                                    "sibling", ifs->ifname);
1788                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1789                 }
1790         }
1791
1792         return 0;
1793 }
1794
1795 #endif /* CONFIG_NO_SCAN_PROCESSING */
1796
1797
1798 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1799 {
1800 #ifdef CONFIG_NO_SCAN_PROCESSING
1801         return -1;
1802 #else /* CONFIG_NO_SCAN_PROCESSING */
1803         struct os_reltime now;
1804
1805         if (wpa_s->last_scan_res_used == 0)
1806                 return -1;
1807
1808         os_get_reltime(&now);
1809         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1810                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1811                 return -1;
1812         }
1813
1814         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1815 #endif /* CONFIG_NO_SCAN_PROCESSING */
1816 }
1817
1818 #ifdef CONFIG_WNM
1819
1820 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1821 {
1822         struct wpa_supplicant *wpa_s = eloop_ctx;
1823
1824         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1825                 return;
1826
1827         if (!wpa_s->no_keep_alive) {
1828                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1829                            MAC2STR(wpa_s->bssid));
1830                 /* TODO: could skip this if normal data traffic has been sent */
1831                 /* TODO: Consider using some more appropriate data frame for
1832                  * this */
1833                 if (wpa_s->l2)
1834                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1835                                        (u8 *) "", 0);
1836         }
1837
1838 #ifdef CONFIG_SME
1839         if (wpa_s->sme.bss_max_idle_period) {
1840                 unsigned int msec;
1841                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1842                 if (msec > 100)
1843                         msec -= 100;
1844                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1845                                        wnm_bss_keep_alive, wpa_s, NULL);
1846         }
1847 #endif /* CONFIG_SME */
1848 }
1849
1850
1851 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1852                                    const u8 *ies, size_t ies_len)
1853 {
1854         struct ieee802_11_elems elems;
1855
1856         if (ies == NULL)
1857                 return;
1858
1859         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1860                 return;
1861
1862 #ifdef CONFIG_SME
1863         if (elems.bss_max_idle_period) {
1864                 unsigned int msec;
1865                 wpa_s->sme.bss_max_idle_period =
1866                         WPA_GET_LE16(elems.bss_max_idle_period);
1867                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1868                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1869                            (elems.bss_max_idle_period[2] & 0x01) ?
1870                            " (protected keep-live required)" : "");
1871                 if (wpa_s->sme.bss_max_idle_period == 0)
1872                         wpa_s->sme.bss_max_idle_period = 1;
1873                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1874                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1875                          /* msec times 1000 */
1876                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1877                         if (msec > 100)
1878                                 msec -= 100;
1879                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1880                                                wnm_bss_keep_alive, wpa_s,
1881                                                NULL);
1882                 }
1883         }
1884 #endif /* CONFIG_SME */
1885 }
1886
1887 #endif /* CONFIG_WNM */
1888
1889
1890 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1891 {
1892 #ifdef CONFIG_WNM
1893         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1894 #endif /* CONFIG_WNM */
1895 }
1896
1897
1898 #ifdef CONFIG_INTERWORKING
1899
1900 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1901                             size_t len)
1902 {
1903         int res;
1904
1905         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1906         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1907         if (res) {
1908                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1909         }
1910
1911         return res;
1912 }
1913
1914
1915 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1916                                             const u8 *ies, size_t ies_len)
1917 {
1918         struct ieee802_11_elems elems;
1919
1920         if (ies == NULL)
1921                 return;
1922
1923         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1924                 return;
1925
1926         if (elems.qos_map_set) {
1927                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1928                                  elems.qos_map_set_len);
1929         }
1930 }
1931
1932 #endif /* CONFIG_INTERWORKING */
1933
1934
1935 #ifdef CONFIG_FST
1936 static int wpas_fst_update_mbie(struct wpa_supplicant *wpa_s,
1937                                 const u8 *ie, size_t ie_len)
1938 {
1939         struct mb_ies_info mb_ies;
1940
1941         if (!ie || !ie_len || !wpa_s->fst)
1942             return -ENOENT;
1943
1944         os_memset(&mb_ies, 0, sizeof(mb_ies));
1945
1946         while (ie_len >= 2 && mb_ies.nof_ies < MAX_NOF_MB_IES_SUPPORTED) {
1947                 size_t len;
1948
1949                 len = 2 + ie[1];
1950                 if (len > ie_len) {
1951                         wpa_hexdump(MSG_DEBUG, "FST: Truncated IE found",
1952                                     ie, ie_len);
1953                         break;
1954                 }
1955
1956                 if (ie[0] == WLAN_EID_MULTI_BAND) {
1957                         wpa_printf(MSG_DEBUG, "MB IE of %u bytes found",
1958                                    (unsigned int) len);
1959                         mb_ies.ies[mb_ies.nof_ies].ie = ie + 2;
1960                         mb_ies.ies[mb_ies.nof_ies].ie_len = len - 2;
1961                         mb_ies.nof_ies++;
1962                 }
1963
1964                 ie_len -= len;
1965                 ie += len;
1966         }
1967
1968         if (mb_ies.nof_ies > 0) {
1969                 wpabuf_free(wpa_s->received_mb_ies);
1970                 wpa_s->received_mb_ies = mb_ies_by_info(&mb_ies);
1971                 return 0;
1972         }
1973
1974         return -ENOENT;
1975 }
1976 #endif /* CONFIG_FST */
1977
1978
1979 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1980                                           union wpa_event_data *data)
1981 {
1982         int l, len, found = 0, wpa_found, rsn_found;
1983         const u8 *p;
1984 #ifdef CONFIG_IEEE80211R
1985         u8 bssid[ETH_ALEN];
1986 #endif /* CONFIG_IEEE80211R */
1987
1988         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1989         if (data->assoc_info.req_ies)
1990                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1991                             data->assoc_info.req_ies_len);
1992         if (data->assoc_info.resp_ies) {
1993                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1994                             data->assoc_info.resp_ies_len);
1995 #ifdef CONFIG_TDLS
1996                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1997                                         data->assoc_info.resp_ies_len);
1998 #endif /* CONFIG_TDLS */
1999 #ifdef CONFIG_WNM
2000                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
2001                                        data->assoc_info.resp_ies_len);
2002 #endif /* CONFIG_WNM */
2003 #ifdef CONFIG_INTERWORKING
2004                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
2005                                                 data->assoc_info.resp_ies_len);
2006 #endif /* CONFIG_INTERWORKING */
2007         }
2008         if (data->assoc_info.beacon_ies)
2009                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
2010                             data->assoc_info.beacon_ies,
2011                             data->assoc_info.beacon_ies_len);
2012         if (data->assoc_info.freq)
2013                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
2014                         data->assoc_info.freq);
2015
2016         p = data->assoc_info.req_ies;
2017         l = data->assoc_info.req_ies_len;
2018
2019         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
2020         while (p && l >= 2) {
2021                 len = p[1] + 2;
2022                 if (len > l) {
2023                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
2024                                     p, l);
2025                         break;
2026                 }
2027                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
2028                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
2029                     (p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 4 &&
2030                      (os_memcmp(&p[2], "\x50\x6F\x9A\x12", 4) == 0)) ||
2031                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
2032                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
2033                                 break;
2034                         found = 1;
2035                         wpa_find_assoc_pmkid(wpa_s);
2036                         break;
2037                 }
2038                 l -= len;
2039                 p += len;
2040         }
2041         if (!found && data->assoc_info.req_ies)
2042                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
2043
2044 #ifdef CONFIG_IEEE80211R
2045 #ifdef CONFIG_SME
2046         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
2047                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
2048                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
2049                                                  data->assoc_info.resp_ies,
2050                                                  data->assoc_info.resp_ies_len,
2051                                                  bssid) < 0) {
2052                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
2053                                 "Reassociation Response failed");
2054                         wpa_supplicant_deauthenticate(
2055                                 wpa_s, WLAN_REASON_INVALID_IE);
2056                         return -1;
2057                 }
2058         }
2059
2060         p = data->assoc_info.resp_ies;
2061         l = data->assoc_info.resp_ies_len;
2062
2063 #ifdef CONFIG_WPS_STRICT
2064         if (p && wpa_s->current_ssid &&
2065             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
2066                 struct wpabuf *wps;
2067                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
2068                 if (wps == NULL) {
2069                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
2070                                 "include WPS IE in (Re)Association Response");
2071                         return -1;
2072                 }
2073
2074                 if (wps_validate_assoc_resp(wps) < 0) {
2075                         wpabuf_free(wps);
2076                         wpa_supplicant_deauthenticate(
2077                                 wpa_s, WLAN_REASON_INVALID_IE);
2078                         return -1;
2079                 }
2080                 wpabuf_free(wps);
2081         }
2082 #endif /* CONFIG_WPS_STRICT */
2083
2084         /* Go through the IEs and make a copy of the MDIE, if present. */
2085         while (p && l >= 2) {
2086                 len = p[1] + 2;
2087                 if (len > l) {
2088                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
2089                                     p, l);
2090                         break;
2091                 }
2092                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
2093                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
2094                         wpa_s->sme.ft_used = 1;
2095                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
2096                                   MOBILITY_DOMAIN_ID_LEN);
2097                         break;
2098                 }
2099                 l -= len;
2100                 p += len;
2101         }
2102 #endif /* CONFIG_SME */
2103
2104         /* Process FT when SME is in the driver */
2105         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
2106             wpa_ft_is_completed(wpa_s->wpa)) {
2107                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
2108                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
2109                                                  data->assoc_info.resp_ies,
2110                                                  data->assoc_info.resp_ies_len,
2111                                                  bssid) < 0) {
2112                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
2113                                 "Reassociation Response failed");
2114                         wpa_supplicant_deauthenticate(
2115                                 wpa_s, WLAN_REASON_INVALID_IE);
2116                         return -1;
2117                 }
2118                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
2119         }
2120
2121         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
2122                              data->assoc_info.resp_ies_len);
2123 #endif /* CONFIG_IEEE80211R */
2124
2125         /* WPA/RSN IE from Beacon/ProbeResp */
2126         p = data->assoc_info.beacon_ies;
2127         l = data->assoc_info.beacon_ies_len;
2128
2129         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
2130          */
2131         wpa_found = rsn_found = 0;
2132         while (p && l >= 2) {
2133                 len = p[1] + 2;
2134                 if (len > l) {
2135                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
2136                                     p, l);
2137                         break;
2138                 }
2139                 if (!wpa_found &&
2140                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
2141                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
2142                         wpa_found = 1;
2143                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
2144                 }
2145
2146                 if (!rsn_found &&
2147                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
2148                         rsn_found = 1;
2149                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
2150                 }
2151
2152                 l -= len;
2153                 p += len;
2154         }
2155
2156         if (!wpa_found && data->assoc_info.beacon_ies)
2157                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
2158         if (!rsn_found && data->assoc_info.beacon_ies)
2159                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
2160         if (wpa_found || rsn_found)
2161                 wpa_s->ap_ies_from_associnfo = 1;
2162
2163         if (wpa_s->assoc_freq && data->assoc_info.freq &&
2164             wpa_s->assoc_freq != data->assoc_info.freq) {
2165                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
2166                            "%u to %u MHz",
2167                            wpa_s->assoc_freq, data->assoc_info.freq);
2168                 wpa_supplicant_update_scan_results(wpa_s);
2169         }
2170
2171         wpa_s->assoc_freq = data->assoc_info.freq;
2172
2173         return 0;
2174 }
2175
2176
2177 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
2178 {
2179         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
2180
2181         if (!wpa_s->current_bss || !wpa_s->current_ssid)
2182                 return -1;
2183
2184         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
2185                 return 0;
2186
2187         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
2188                                         WPA_IE_VENDOR_TYPE);
2189         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
2190
2191         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
2192                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
2193             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
2194                                  bss_rsn ? 2 + bss_rsn[1] : 0))
2195                 return -1;
2196
2197         return 0;
2198 }
2199
2200
2201 static void wpas_fst_update_mb_assoc(struct wpa_supplicant *wpa_s,
2202                                      union wpa_event_data *data)
2203 {
2204 #ifdef CONFIG_FST
2205         struct assoc_info *ai = data ? &data->assoc_info : NULL;
2206         struct wpa_bss *bss = wpa_s->current_bss;
2207         const u8 *ieprb, *iebcn;
2208
2209         wpabuf_free(wpa_s->received_mb_ies);
2210         wpa_s->received_mb_ies = NULL;
2211
2212         if (ai &&
2213             !wpas_fst_update_mbie(wpa_s, ai->resp_ies, ai->resp_ies_len)) {
2214                 wpa_printf(MSG_DEBUG,
2215                            "FST: MB IEs updated from Association Response frame");
2216                 return;
2217         }
2218
2219         if (ai &&
2220             !wpas_fst_update_mbie(wpa_s, ai->beacon_ies, ai->beacon_ies_len)) {
2221                 wpa_printf(MSG_DEBUG,
2222                            "FST: MB IEs updated from association event Beacon IEs");
2223                 return;
2224         }
2225
2226         if (!bss)
2227                 return;
2228
2229         ieprb = (const u8 *) (bss + 1);
2230         iebcn = ieprb + bss->ie_len;
2231
2232         if (!wpas_fst_update_mbie(wpa_s, ieprb, bss->ie_len))
2233                 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss IE");
2234         else if (!wpas_fst_update_mbie(wpa_s, iebcn, bss->beacon_ie_len))
2235                 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss beacon IE");
2236 #endif /* CONFIG_FST */
2237 }
2238
2239
2240 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
2241                                        union wpa_event_data *data)
2242 {
2243         u8 bssid[ETH_ALEN];
2244         int ft_completed, already_authorized;
2245         int new_bss = 0;
2246
2247 #ifdef CONFIG_AP
2248         if (wpa_s->ap_iface) {
2249                 if (!data)
2250                         return;
2251                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
2252                                     data->assoc_info.addr,
2253                                     data->assoc_info.req_ies,
2254                                     data->assoc_info.req_ies_len,
2255                                     data->assoc_info.reassoc);
2256                 return;
2257         }
2258 #endif /* CONFIG_AP */
2259
2260         eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
2261
2262         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
2263         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
2264                 return;
2265
2266         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
2267                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
2268                 wpa_supplicant_deauthenticate(
2269                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2270                 return;
2271         }
2272
2273         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
2274         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
2275                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
2276                         MACSTR, MAC2STR(bssid));
2277                 new_bss = 1;
2278                 random_add_randomness(bssid, ETH_ALEN);
2279                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
2280                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2281                 wpas_notify_bssid_changed(wpa_s);
2282
2283                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
2284                         wpa_clear_keys(wpa_s, bssid);
2285                 }
2286                 if (wpa_supplicant_select_config(wpa_s) < 0) {
2287                         wpa_supplicant_deauthenticate(
2288                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2289                         return;
2290                 }
2291         }
2292
2293         if (wpa_s->conf->ap_scan == 1 &&
2294             wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
2295                 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0 && new_bss)
2296                         wpa_msg(wpa_s, MSG_WARNING,
2297                                 "WPA/RSN IEs not updated");
2298         }
2299
2300         wpas_fst_update_mb_assoc(wpa_s, data);
2301
2302 #ifdef CONFIG_SME
2303         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
2304         wpa_s->sme.prev_bssid_set = 1;
2305         wpa_s->sme.last_unprot_disconnect.sec = 0;
2306 #endif /* CONFIG_SME */
2307
2308         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
2309         if (wpa_s->current_ssid) {
2310                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
2311                  * initialized before association, but for other modes,
2312                  * initialize PC/SC here, if the current configuration needs
2313                  * smartcard or SIM/USIM. */
2314                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
2315         }
2316         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
2317         if (wpa_s->l2)
2318                 l2_packet_notify_auth_start(wpa_s->l2);
2319
2320         already_authorized = data && data->assoc_info.authorized;
2321
2322         /*
2323          * Set portEnabled first to FALSE in order to get EAP state machine out
2324          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
2325          * state machine may transit to AUTHENTICATING state based on obsolete
2326          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
2327          * AUTHENTICATED without ever giving chance to EAP state machine to
2328          * reset the state.
2329          */
2330         if (!ft_completed && !already_authorized) {
2331                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2332                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2333         }
2334         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed ||
2335             already_authorized)
2336                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2337         /* 802.1X::portControl = Auto */
2338         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2339         wpa_s->eapol_received = 0;
2340         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2341             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2342             (wpa_s->current_ssid &&
2343              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2344                 if (wpa_s->current_ssid &&
2345                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2346                     (wpa_s->drv_flags &
2347                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2348                         /*
2349                          * Set the key after having received joined-IBSS event
2350                          * from the driver.
2351                          */
2352                         wpa_supplicant_set_wpa_none_key(wpa_s,
2353                                                         wpa_s->current_ssid);
2354                 }
2355                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2356                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2357         } else if (!ft_completed) {
2358                 /* Timeout for receiving the first EAPOL packet */
2359                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2360         }
2361         wpa_supplicant_cancel_scan(wpa_s);
2362
2363         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2364             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2365                 /*
2366                  * We are done; the driver will take care of RSN 4-way
2367                  * handshake.
2368                  */
2369                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2370                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2371                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2372                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2373         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2374                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2375                 /*
2376                  * The driver will take care of RSN 4-way handshake, so we need
2377                  * to allow EAPOL supplicant to complete its work without
2378                  * waiting for WPA supplicant.
2379                  */
2380                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2381         } else if (ft_completed) {
2382                 /*
2383                  * FT protocol completed - make sure EAPOL state machine ends
2384                  * up in authenticated.
2385                  */
2386                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2387                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2388                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2389                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2390         }
2391
2392         wpa_s->last_eapol_matches_bssid = 0;
2393
2394         if (wpa_s->pending_eapol_rx) {
2395                 struct os_reltime now, age;
2396                 os_get_reltime(&now);
2397                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2398                 if (age.sec == 0 && age.usec < 100000 &&
2399                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2400                     0) {
2401                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2402                                 "frame that was received just before "
2403                                 "association notification");
2404                         wpa_supplicant_rx_eapol(
2405                                 wpa_s, wpa_s->pending_eapol_rx_src,
2406                                 wpabuf_head(wpa_s->pending_eapol_rx),
2407                                 wpabuf_len(wpa_s->pending_eapol_rx));
2408                 }
2409                 wpabuf_free(wpa_s->pending_eapol_rx);
2410                 wpa_s->pending_eapol_rx = NULL;
2411         }
2412
2413         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2414              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2415             wpa_s->current_ssid &&
2416             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2417                 /* Set static WEP keys again */
2418                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2419         }
2420
2421 #ifdef CONFIG_IBSS_RSN
2422         if (wpa_s->current_ssid &&
2423             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2424             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2425             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2426             wpa_s->ibss_rsn == NULL) {
2427                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s, wpa_s->current_ssid);
2428                 if (!wpa_s->ibss_rsn) {
2429                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2430                         wpa_supplicant_deauthenticate(
2431                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2432                         return;
2433                 }
2434
2435                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2436         }
2437 #endif /* CONFIG_IBSS_RSN */
2438
2439         wpas_wps_notify_assoc(wpa_s, bssid);
2440
2441         if (data) {
2442                 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2443                                     data->assoc_info.resp_ies_len,
2444                                     &data->assoc_info.wmm_params);
2445
2446                 if (wpa_s->reassoc_same_bss)
2447                         wmm_ac_restore_tspecs(wpa_s);
2448         }
2449 }
2450
2451
2452 static int disconnect_reason_recoverable(u16 reason_code)
2453 {
2454         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2455                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2456                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2457 }
2458
2459
2460 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2461                                           u16 reason_code,
2462                                           int locally_generated)
2463 {
2464         const u8 *bssid;
2465
2466         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2467                 /*
2468                  * At least Host AP driver and a Prism3 card seemed to be
2469                  * generating streams of disconnected events when configuring
2470                  * IBSS for WPA-None. Ignore them for now.
2471                  */
2472                 return;
2473         }
2474
2475         bssid = wpa_s->bssid;
2476         if (is_zero_ether_addr(bssid))
2477                 bssid = wpa_s->pending_bssid;
2478
2479         if (!is_zero_ether_addr(bssid) ||
2480             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2481                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2482                         " reason=%d%s",
2483                         MAC2STR(bssid), reason_code,
2484                         locally_generated ? " locally_generated=1" : "");
2485         }
2486 }
2487
2488
2489 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2490                                  int locally_generated)
2491 {
2492         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2493             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2494                 return 0; /* Not in 4-way handshake with PSK */
2495
2496         /*
2497          * It looks like connection was lost while trying to go through PSK
2498          * 4-way handshake. Filter out known disconnection cases that are caused
2499          * by something else than PSK mismatch to avoid confusing reports.
2500          */
2501
2502         if (locally_generated) {
2503                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2504                         return 0;
2505         }
2506
2507         return 1;
2508 }
2509
2510
2511 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2512                                                  u16 reason_code,
2513                                                  int locally_generated)
2514 {
2515         const u8 *bssid;
2516         int authenticating;
2517         u8 prev_pending_bssid[ETH_ALEN];
2518         struct wpa_bss *fast_reconnect = NULL;
2519         struct wpa_ssid *fast_reconnect_ssid = NULL;
2520         struct wpa_ssid *last_ssid;
2521
2522         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2523         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2524
2525         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2526                 /*
2527                  * At least Host AP driver and a Prism3 card seemed to be
2528                  * generating streams of disconnected events when configuring
2529                  * IBSS for WPA-None. Ignore them for now.
2530                  */
2531                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2532                         "IBSS/WPA-None mode");
2533                 return;
2534         }
2535
2536         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2537                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2538                         "pre-shared key may be incorrect");
2539                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2540                         return; /* P2P group removed */
2541                 wpas_auth_failed(wpa_s, "WRONG_KEY");
2542         }
2543         if (!wpa_s->disconnected &&
2544             (!wpa_s->auto_reconnect_disabled ||
2545              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2546              wpas_wps_searching(wpa_s) ||
2547              wpas_wps_reenable_networks_pending(wpa_s))) {
2548                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2549                         "reconnect (wps=%d/%d wpa_state=%d)",
2550                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2551                         wpas_wps_searching(wpa_s),
2552                         wpa_s->wpa_state);
2553                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2554                     wpa_s->current_ssid &&
2555                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2556                     !locally_generated &&
2557                     disconnect_reason_recoverable(reason_code)) {
2558                         /*
2559                          * It looks like the AP has dropped association with
2560                          * us, but could allow us to get back in. Try to
2561                          * reconnect to the same BSS without full scan to save
2562                          * time for some common cases.
2563                          */
2564                         fast_reconnect = wpa_s->current_bss;
2565                         fast_reconnect_ssid = wpa_s->current_ssid;
2566                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2567                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2568                 else
2569                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2570                                 "immediate scan");
2571         } else {
2572                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2573                         "try to re-connect");
2574                 wpa_s->reassociate = 0;
2575                 wpa_s->disconnected = 1;
2576                 if (!wpa_s->pno)
2577                         wpa_supplicant_cancel_sched_scan(wpa_s);
2578         }
2579         bssid = wpa_s->bssid;
2580         if (is_zero_ether_addr(bssid))
2581                 bssid = wpa_s->pending_bssid;
2582         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2583                 wpas_connection_failed(wpa_s, bssid);
2584         wpa_sm_notify_disassoc(wpa_s->wpa);
2585         if (locally_generated)
2586                 wpa_s->disconnect_reason = -reason_code;
2587         else
2588                 wpa_s->disconnect_reason = reason_code;
2589         wpas_notify_disconnect_reason(wpa_s);
2590         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2591                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2592                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2593         }
2594         last_ssid = wpa_s->current_ssid;
2595         wpa_supplicant_mark_disassoc(wpa_s);
2596
2597         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2598                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2599                 wpa_s->current_ssid = last_ssid;
2600         }
2601
2602         if (fast_reconnect &&
2603             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2604             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2605             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2606                              fast_reconnect->ssid_len) &&
2607             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid) &&
2608             !wpa_is_bss_tmp_disallowed(wpa_s, fast_reconnect->bssid)) {
2609 #ifndef CONFIG_NO_SCAN_PROCESSING
2610                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2611                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2612                                            fast_reconnect_ssid) < 0) {
2613                         /* Recover through full scan */
2614                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2615                 }
2616 #endif /* CONFIG_NO_SCAN_PROCESSING */
2617         } else if (fast_reconnect) {
2618                 /*
2619                  * Could not reconnect to the same BSS due to network being
2620                  * disabled. Use a new scan to match the alternative behavior
2621                  * above, i.e., to continue automatic reconnection attempt in a
2622                  * way that enforces disabled network rules.
2623                  */
2624                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2625         }
2626 }
2627
2628
2629 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2630 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2631 {
2632         struct wpa_supplicant *wpa_s = eloop_ctx;
2633
2634         if (!wpa_s->pending_mic_error_report)
2635                 return;
2636
2637         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2638         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2639         wpa_s->pending_mic_error_report = 0;
2640 }
2641 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2642
2643
2644 static void
2645 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2646                                          union wpa_event_data *data)
2647 {
2648         int pairwise;
2649         struct os_reltime t;
2650
2651         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2652         pairwise = (data && data->michael_mic_failure.unicast);
2653         os_get_reltime(&t);
2654         if ((wpa_s->last_michael_mic_error.sec &&
2655              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2656             wpa_s->pending_mic_error_report) {
2657                 if (wpa_s->pending_mic_error_report) {
2658                         /*
2659                          * Send the pending MIC error report immediately since
2660                          * we are going to start countermeasures and AP better
2661                          * do the same.
2662                          */
2663                         wpa_sm_key_request(wpa_s->wpa, 1,
2664                                            wpa_s->pending_mic_error_pairwise);
2665                 }
2666
2667                 /* Send the new MIC error report immediately since we are going
2668                  * to start countermeasures and AP better do the same.
2669                  */
2670                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2671
2672                 /* initialize countermeasures */
2673                 wpa_s->countermeasures = 1;
2674
2675                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2676
2677                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2678
2679                 /*
2680                  * Need to wait for completion of request frame. We do not get
2681                  * any callback for the message completion, so just wait a
2682                  * short while and hope for the best. */
2683                 os_sleep(0, 10000);
2684
2685                 wpa_drv_set_countermeasures(wpa_s, 1);
2686                 wpa_supplicant_deauthenticate(wpa_s,
2687                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2688                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2689                                      wpa_s, NULL);
2690                 eloop_register_timeout(60, 0,
2691                                        wpa_supplicant_stop_countermeasures,
2692                                        wpa_s, NULL);
2693                 /* TODO: mark the AP rejected for 60 second. STA is
2694                  * allowed to associate with another AP.. */
2695         } else {
2696 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2697                 if (wpa_s->mic_errors_seen) {
2698                         /*
2699                          * Reduce the effectiveness of Michael MIC error
2700                          * reports as a means for attacking against TKIP if
2701                          * more than one MIC failure is noticed with the same
2702                          * PTK. We delay the transmission of the reports by a
2703                          * random time between 0 and 60 seconds in order to
2704                          * force the attacker wait 60 seconds before getting
2705                          * the information on whether a frame resulted in a MIC
2706                          * failure.
2707                          */
2708                         u8 rval[4];
2709                         int sec;
2710
2711                         if (os_get_random(rval, sizeof(rval)) < 0)
2712                                 sec = os_random() % 60;
2713                         else
2714                                 sec = WPA_GET_BE32(rval) % 60;
2715                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2716                                 "report %d seconds", sec);
2717                         wpa_s->pending_mic_error_report = 1;
2718                         wpa_s->pending_mic_error_pairwise = pairwise;
2719                         eloop_cancel_timeout(
2720                                 wpa_supplicant_delayed_mic_error_report,
2721                                 wpa_s, NULL);
2722                         eloop_register_timeout(
2723                                 sec, os_random() % 1000000,
2724                                 wpa_supplicant_delayed_mic_error_report,
2725                                 wpa_s, NULL);
2726                 } else {
2727                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2728                 }
2729 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2730                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2731 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2732         }
2733         wpa_s->last_michael_mic_error = t;
2734         wpa_s->mic_errors_seen++;
2735 }
2736
2737
2738 #ifdef CONFIG_TERMINATE_ONLASTIF
2739 static int any_interfaces(struct wpa_supplicant *head)
2740 {
2741         struct wpa_supplicant *wpa_s;
2742
2743         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2744                 if (!wpa_s->interface_removed)
2745                         return 1;
2746         return 0;
2747 }
2748 #endif /* CONFIG_TERMINATE_ONLASTIF */
2749
2750
2751 static void
2752 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2753                                       union wpa_event_data *data)
2754 {
2755         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2756                 return;
2757
2758         switch (data->interface_status.ievent) {
2759         case EVENT_INTERFACE_ADDED:
2760                 if (!wpa_s->interface_removed)
2761                         break;
2762                 wpa_s->interface_removed = 0;
2763                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2764                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2765                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2766                                 "driver after interface was added");
2767                 }
2768
2769 #ifdef CONFIG_P2P
2770                 if (!wpa_s->global->p2p &&
2771                     !wpa_s->global->p2p_disabled &&
2772                     !wpa_s->conf->p2p_disabled &&
2773                     (wpa_s->drv_flags &
2774                      WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
2775                     wpas_p2p_add_p2pdev_interface(
2776                             wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) {
2777                         wpa_printf(MSG_INFO,
2778                                    "P2P: Failed to enable P2P Device interface");
2779                         /* Try to continue without. P2P will be disabled. */
2780                 }
2781 #endif /* CONFIG_P2P */
2782
2783                 break;
2784         case EVENT_INTERFACE_REMOVED:
2785                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2786                 wpa_s->interface_removed = 1;
2787                 wpa_supplicant_mark_disassoc(wpa_s);
2788                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2789                 l2_packet_deinit(wpa_s->l2);
2790                 wpa_s->l2 = NULL;
2791
2792 #ifdef CONFIG_P2P
2793                 if (wpa_s->global->p2p &&
2794                     wpa_s->global->p2p_init_wpa_s->parent == wpa_s &&
2795                     (wpa_s->drv_flags &
2796                      WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) {
2797                         wpa_dbg(wpa_s, MSG_DEBUG,
2798                                 "Removing P2P Device interface");
2799                         wpa_supplicant_remove_iface(
2800                                 wpa_s->global, wpa_s->global->p2p_init_wpa_s,
2801                                 0);
2802                         wpa_s->global->p2p_init_wpa_s = NULL;
2803                 }
2804 #endif /* CONFIG_P2P */
2805
2806 #ifdef CONFIG_MATCH_IFACE
2807                 if (wpa_s->matched) {
2808                         wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
2809                         break;
2810                 }
2811 #endif /* CONFIG_MATCH_IFACE */
2812
2813 #ifdef CONFIG_TERMINATE_ONLASTIF
2814                 /* check if last interface */
2815                 if (!any_interfaces(wpa_s->global->ifaces))
2816                         eloop_terminate();
2817 #endif /* CONFIG_TERMINATE_ONLASTIF */
2818                 break;
2819         }
2820 }
2821
2822
2823 #ifdef CONFIG_PEERKEY
2824 static void
2825 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2826                               union wpa_event_data *data)
2827 {
2828         if (data == NULL)
2829                 return;
2830         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2831 }
2832 #endif /* CONFIG_PEERKEY */
2833
2834
2835 #ifdef CONFIG_TDLS
2836 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2837                                       union wpa_event_data *data)
2838 {
2839         if (data == NULL)
2840                 return;
2841         switch (data->tdls.oper) {
2842         case TDLS_REQUEST_SETUP:
2843                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2844                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2845                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2846                 else
2847                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2848                 break;
2849         case TDLS_REQUEST_TEARDOWN:
2850                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2851                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2852                                                data->tdls.reason_code);
2853                 else
2854                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2855                                           data->tdls.peer);
2856                 break;
2857         case TDLS_REQUEST_DISCOVER:
2858                         wpa_tdls_send_discovery_request(wpa_s->wpa,
2859                                                         data->tdls.peer);
2860                 break;
2861         }
2862 }
2863 #endif /* CONFIG_TDLS */
2864
2865
2866 #ifdef CONFIG_WNM
2867 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2868                                      union wpa_event_data *data)
2869 {
2870         if (data == NULL)
2871                 return;
2872         switch (data->wnm.oper) {
2873         case WNM_OPER_SLEEP:
2874                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2875                            "(action=%d, intval=%d)",
2876                            data->wnm.sleep_action, data->wnm.sleep_intval);
2877                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2878                                              data->wnm.sleep_intval, NULL);
2879                 break;
2880         }
2881 }
2882 #endif /* CONFIG_WNM */
2883
2884
2885 #ifdef CONFIG_IEEE80211R
2886 static void
2887 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2888                                  union wpa_event_data *data)
2889 {
2890         if (data == NULL)
2891                 return;
2892
2893         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2894                                     data->ft_ies.ies_len,
2895                                     data->ft_ies.ft_action,
2896                                     data->ft_ies.target_ap,
2897                                     data->ft_ies.ric_ies,
2898                                     data->ft_ies.ric_ies_len) < 0) {
2899                 /* TODO: prevent MLME/driver from trying to associate? */
2900         }
2901 }
2902 #endif /* CONFIG_IEEE80211R */
2903
2904
2905 #ifdef CONFIG_IBSS_RSN
2906 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2907                                                 union wpa_event_data *data)
2908 {
2909         struct wpa_ssid *ssid;
2910         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2911                 return;
2912         if (data == NULL)
2913                 return;
2914         ssid = wpa_s->current_ssid;
2915         if (ssid == NULL)
2916                 return;
2917         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2918                 return;
2919
2920         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2921 }
2922
2923
2924 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2925                                            union wpa_event_data *data)
2926 {
2927         struct wpa_ssid *ssid = wpa_s->current_ssid;
2928
2929         if (ssid == NULL)
2930                 return;
2931
2932         /* check if the ssid is correctly configured as IBSS/RSN */
2933         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2934                 return;
2935
2936         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2937                              data->rx_mgmt.frame_len);
2938 }
2939 #endif /* CONFIG_IBSS_RSN */
2940
2941
2942 #ifdef CONFIG_IEEE80211R
2943 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2944                          size_t len)
2945 {
2946         const u8 *sta_addr, *target_ap_addr;
2947         u16 status;
2948
2949         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2950         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2951                 return; /* only SME case supported for now */
2952         if (len < 1 + 2 * ETH_ALEN + 2)
2953                 return;
2954         if (data[0] != 2)
2955                 return; /* Only FT Action Response is supported for now */
2956         sta_addr = data + 1;
2957         target_ap_addr = data + 1 + ETH_ALEN;
2958         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2959         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2960                 MACSTR " TargetAP " MACSTR " status %u",
2961                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2962
2963         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2964                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2965                         " in FT Action Response", MAC2STR(sta_addr));
2966                 return;
2967         }
2968
2969         if (status) {
2970                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2971                         "failure (status code %d)", status);
2972                 /* TODO: report error to FT code(?) */
2973                 return;
2974         }
2975
2976         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2977                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2978                                     target_ap_addr, NULL, 0) < 0)
2979                 return;
2980
2981 #ifdef CONFIG_SME
2982         {
2983                 struct wpa_bss *bss;
2984                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2985                 if (bss)
2986                         wpa_s->sme.freq = bss->freq;
2987                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2988                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2989                               WLAN_AUTH_FT);
2990         }
2991 #endif /* CONFIG_SME */
2992 }
2993 #endif /* CONFIG_IEEE80211R */
2994
2995
2996 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2997                                                struct unprot_deauth *e)
2998 {
2999 #ifdef CONFIG_IEEE80211W
3000         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
3001                    "dropped: " MACSTR " -> " MACSTR
3002                    " (reason code %u)",
3003                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
3004         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
3005 #endif /* CONFIG_IEEE80211W */
3006 }
3007
3008
3009 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
3010                                                  struct unprot_disassoc *e)
3011 {
3012 #ifdef CONFIG_IEEE80211W
3013         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
3014                    "dropped: " MACSTR " -> " MACSTR
3015                    " (reason code %u)",
3016                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
3017         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
3018 #endif /* CONFIG_IEEE80211W */
3019 }
3020
3021
3022 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
3023                                   u16 reason_code, int locally_generated,
3024                                   const u8 *ie, size_t ie_len, int deauth)
3025 {
3026 #ifdef CONFIG_AP
3027         if (wpa_s->ap_iface && addr) {
3028                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
3029                 return;
3030         }
3031
3032         if (wpa_s->ap_iface) {
3033                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
3034                 return;
3035         }
3036 #endif /* CONFIG_AP */
3037
3038         if (!locally_generated)
3039                 wpa_s->own_disconnect_req = 0;
3040
3041         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
3042
3043         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
3044               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
3045                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
3046                eapol_sm_failed(wpa_s->eapol))) &&
3047              !wpa_s->eap_expected_failure))
3048                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
3049
3050 #ifdef CONFIG_P2P
3051         if (deauth && reason_code > 0) {
3052                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
3053                                           locally_generated) > 0) {
3054                         /*
3055                          * The interface was removed, so cannot continue
3056                          * processing any additional operations after this.
3057                          */
3058                         return;
3059                 }
3060         }
3061 #endif /* CONFIG_P2P */
3062
3063         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
3064                                              locally_generated);
3065 }
3066
3067
3068 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
3069                                 struct disassoc_info *info)
3070 {
3071         u16 reason_code = 0;
3072         int locally_generated = 0;
3073         const u8 *addr = NULL;
3074         const u8 *ie = NULL;
3075         size_t ie_len = 0;
3076
3077         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
3078
3079         if (info) {
3080                 addr = info->addr;
3081                 ie = info->ie;
3082                 ie_len = info->ie_len;
3083                 reason_code = info->reason_code;
3084                 locally_generated = info->locally_generated;
3085                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
3086                         locally_generated ? " (locally generated)" : "");
3087                 if (addr)
3088                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
3089                                 MAC2STR(addr));
3090                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
3091                             ie, ie_len);
3092         }
3093
3094 #ifdef CONFIG_AP
3095         if (wpa_s->ap_iface && info && info->addr) {
3096                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
3097                 return;
3098         }
3099
3100         if (wpa_s->ap_iface) {
3101                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
3102                 return;
3103         }
3104 #endif /* CONFIG_AP */
3105
3106 #ifdef CONFIG_P2P
3107         if (info) {
3108                 wpas_p2p_disassoc_notif(
3109                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
3110                         locally_generated);
3111         }
3112 #endif /* CONFIG_P2P */
3113
3114         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3115                 sme_event_disassoc(wpa_s, info);
3116
3117         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
3118                               ie, ie_len, 0);
3119 }
3120
3121
3122 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
3123                               struct deauth_info *info)
3124 {
3125         u16 reason_code = 0;
3126         int locally_generated = 0;
3127         const u8 *addr = NULL;
3128         const u8 *ie = NULL;
3129         size_t ie_len = 0;
3130
3131         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
3132
3133         if (info) {
3134                 addr = info->addr;
3135                 ie = info->ie;
3136                 ie_len = info->ie_len;
3137                 reason_code = info->reason_code;
3138                 locally_generated = info->locally_generated;
3139                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
3140                         reason_code,
3141                         locally_generated ? " (locally generated)" : "");
3142                 if (addr) {
3143                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
3144                                 MAC2STR(addr));
3145                 }
3146                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
3147                             ie, ie_len);
3148         }
3149
3150         wpa_reset_ft_completed(wpa_s->wpa);
3151
3152         wpas_event_disconnect(wpa_s, addr, reason_code,
3153                               locally_generated, ie, ie_len, 1);
3154 }
3155
3156
3157 static const char * reg_init_str(enum reg_change_initiator init)
3158 {
3159         switch (init) {
3160         case REGDOM_SET_BY_CORE:
3161                 return "CORE";
3162         case REGDOM_SET_BY_USER:
3163                 return "USER";
3164         case REGDOM_SET_BY_DRIVER:
3165                 return "DRIVER";
3166         case REGDOM_SET_BY_COUNTRY_IE:
3167                 return "COUNTRY_IE";
3168         case REGDOM_BEACON_HINT:
3169                 return "BEACON_HINT";
3170         }
3171         return "?";
3172 }
3173
3174
3175 static const char * reg_type_str(enum reg_type type)
3176 {
3177         switch (type) {
3178         case REGDOM_TYPE_UNKNOWN:
3179                 return "UNKNOWN";
3180         case REGDOM_TYPE_COUNTRY:
3181                 return "COUNTRY";
3182         case REGDOM_TYPE_WORLD:
3183                 return "WORLD";
3184         case REGDOM_TYPE_CUSTOM_WORLD:
3185                 return "CUSTOM_WORLD";
3186         case REGDOM_TYPE_INTERSECTION:
3187                 return "INTERSECTION";
3188         }
3189         return "?";
3190 }
3191
3192
3193 static void wpa_supplicant_update_channel_list(
3194         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
3195 {
3196         struct wpa_supplicant *ifs;
3197
3198         /*
3199          * To allow backwards compatibility with higher level layers that
3200          * assumed the REGDOM_CHANGE event is sent over the initially added
3201          * interface. Find the highest parent of this interface and use it to
3202          * send the event.
3203          */
3204         for (ifs = wpa_s; ifs->parent && ifs != ifs->parent; ifs = ifs->parent)
3205                 ;
3206
3207         wpa_msg(ifs, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
3208                 reg_init_str(info->initiator), reg_type_str(info->type),
3209                 info->alpha2[0] ? " alpha2=" : "",
3210                 info->alpha2[0] ? info->alpha2 : "");
3211
3212         if (wpa_s->drv_priv == NULL)
3213                 return; /* Ignore event during drv initialization */
3214
3215         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
3216                          radio_list) {
3217                 wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
3218                            ifs->ifname);
3219                 free_hw_features(ifs);
3220                 ifs->hw.modes = wpa_drv_get_hw_feature_data(
3221                         ifs, &ifs->hw.num_modes, &ifs->hw.flags);
3222         }
3223
3224         /* Restart sched_scan with updated channel list */
3225         if (wpa_s->sched_scanning) {
3226                 wpa_dbg(wpa_s, MSG_DEBUG,
3227                         "Channel list changed restart sched scan.");
3228                 wpa_supplicant_cancel_sched_scan(wpa_s);
3229                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3230         }
3231
3232         wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_DRIVER);
3233 }
3234
3235
3236 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
3237                                       const u8 *frame, size_t len, int freq,
3238                                       int rssi)
3239 {
3240         const struct ieee80211_mgmt *mgmt;
3241         const u8 *payload;
3242         size_t plen;
3243         u8 category;
3244
3245         if (len < IEEE80211_HDRLEN + 2)
3246                 return;
3247
3248         mgmt = (const struct ieee80211_mgmt *) frame;
3249         payload = frame + IEEE80211_HDRLEN;
3250         category = *payload++;
3251         plen = len - IEEE80211_HDRLEN - 1;
3252
3253         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
3254                 " Category=%u DataLen=%d freq=%d MHz",
3255                 MAC2STR(mgmt->sa), category, (int) plen, freq);
3256
3257         if (category == WLAN_ACTION_WMM) {
3258                 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
3259                 return;
3260         }
3261
3262 #ifdef CONFIG_IEEE80211R
3263         if (category == WLAN_ACTION_FT) {
3264                 ft_rx_action(wpa_s, payload, plen);
3265                 return;
3266         }
3267 #endif /* CONFIG_IEEE80211R */
3268
3269 #ifdef CONFIG_IEEE80211W
3270 #ifdef CONFIG_SME
3271         if (category == WLAN_ACTION_SA_QUERY) {
3272                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
3273                 return;
3274         }
3275 #endif /* CONFIG_SME */
3276 #endif /* CONFIG_IEEE80211W */
3277
3278 #ifdef CONFIG_WNM
3279         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
3280                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
3281                 return;
3282         }
3283 #endif /* CONFIG_WNM */
3284
3285 #ifdef CONFIG_GAS
3286         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
3287              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
3288             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
3289                          mgmt->u.action.category,
3290                          payload, plen, freq) == 0)
3291                 return;
3292 #endif /* CONFIG_GAS */
3293
3294 #ifdef CONFIG_TDLS
3295         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
3296             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
3297                 wpa_dbg(wpa_s, MSG_DEBUG,
3298                         "TDLS: Received Discovery Response from " MACSTR,
3299                         MAC2STR(mgmt->sa));
3300                 return;
3301         }
3302 #endif /* CONFIG_TDLS */
3303
3304 #ifdef CONFIG_INTERWORKING
3305         if (category == WLAN_ACTION_QOS && plen >= 1 &&
3306             payload[0] == QOS_QOS_MAP_CONFIG) {
3307                 const u8 *pos = payload + 1;
3308                 size_t qlen = plen - 1;
3309                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
3310                         MACSTR, MAC2STR(mgmt->sa));
3311                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
3312                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
3313                     pos[1] <= qlen - 2 && pos[1] >= 16)
3314                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
3315                 return;
3316         }
3317 #endif /* CONFIG_INTERWORKING */
3318
3319         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3320             payload[0] == WLAN_RRM_RADIO_MEASUREMENT_REQUEST) {
3321                 wpas_rrm_handle_radio_measurement_request(wpa_s, mgmt->sa,
3322                                                           payload + 1,
3323                                                           plen - 1);
3324                 return;
3325         }
3326
3327         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3328             payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
3329                 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
3330                 return;
3331         }
3332
3333         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3334             payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
3335                 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
3336                                                          payload + 1, plen - 1,
3337                                                          rssi);
3338                 return;
3339         }
3340
3341 #ifdef CONFIG_FST
3342         if (mgmt->u.action.category == WLAN_ACTION_FST && wpa_s->fst) {
3343                 fst_rx_action(wpa_s->fst, mgmt, len);
3344                 return;
3345         }
3346 #endif /* CONFIG_FST */
3347
3348         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
3349                            category, payload, plen, freq);
3350         if (wpa_s->ifmsh)
3351                 mesh_mpm_action_rx(wpa_s, mgmt, len);
3352 }
3353
3354
3355 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
3356                                              union wpa_event_data *event)
3357 {
3358         struct wpa_freq_range_list *list;
3359         char *str = NULL;
3360
3361         list = &event->freq_range;
3362
3363         if (list->num)
3364                 str = freq_range_list_str(list);
3365         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
3366                 str ? str : "");
3367
3368 #ifdef CONFIG_P2P
3369         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
3370                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
3371                         __func__);
3372         } else {
3373                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
3374
3375                 /*
3376                  * The update channel flow will also take care of moving a GO
3377                  * from the unsafe frequency if needed.
3378                  */
3379                 wpas_p2p_update_channel_list(wpa_s,
3380                                              WPAS_P2P_CHANNEL_UPDATE_AVOID);
3381         }
3382 #endif /* CONFIG_P2P */
3383
3384         os_free(str);
3385 }
3386
3387
3388 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3389                                             union wpa_event_data *data)
3390 {
3391         wpa_dbg(wpa_s, MSG_DEBUG,
3392                 "Connection authorized by device, previous state %d",
3393                 wpa_s->wpa_state);
3394         if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3395                 wpa_supplicant_cancel_auth_timeout(wpa_s);
3396                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3397                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3398                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3399         }
3400         wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3401         wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3402                                data->assoc_info.ptk_kck_len,
3403                                data->assoc_info.ptk_kek,
3404                                data->assoc_info.ptk_kek_len);
3405 }
3406
3407
3408 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3409                           union wpa_event_data *data)
3410 {
3411         struct wpa_supplicant *wpa_s = ctx;
3412         int resched;
3413
3414         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3415             event != EVENT_INTERFACE_ENABLED &&
3416             event != EVENT_INTERFACE_STATUS &&
3417             event != EVENT_SCAN_RESULTS &&
3418             event != EVENT_SCHED_SCAN_STOPPED) {
3419                 wpa_dbg(wpa_s, MSG_DEBUG,
3420                         "Ignore event %s (%d) while interface is disabled",
3421                         event_to_string(event), event);
3422                 return;
3423         }
3424
3425 #ifndef CONFIG_NO_STDOUT_DEBUG
3426 {
3427         int level = MSG_DEBUG;
3428
3429         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3430                 const struct ieee80211_hdr *hdr;
3431                 u16 fc;
3432                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3433                 fc = le_to_host16(hdr->frame_control);
3434                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3435                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3436                         level = MSG_EXCESSIVE;
3437         }
3438
3439         wpa_dbg(wpa_s, level, "Event %s (%d) received",
3440                 event_to_string(event), event);
3441 }
3442 #endif /* CONFIG_NO_STDOUT_DEBUG */
3443
3444         switch (event) {
3445         case EVENT_AUTH:
3446 #ifdef CONFIG_FST
3447                 if (!wpas_fst_update_mbie(wpa_s, data->auth.ies,
3448                                           data->auth.ies_len))
3449                         wpa_printf(MSG_DEBUG,
3450                                    "FST: MB IEs updated from auth IE");
3451 #endif /* CONFIG_FST */
3452                 sme_event_auth(wpa_s, data);
3453                 break;
3454         case EVENT_ASSOC:
3455 #ifdef CONFIG_TESTING_OPTIONS
3456                 if (wpa_s->ignore_auth_resp) {
3457                         wpa_printf(MSG_INFO,
3458                                    "EVENT_ASSOC - ignore_auth_resp active!");
3459                         break;
3460                 }
3461 #endif /* CONFIG_TESTING_OPTIONS */
3462                 wpa_supplicant_event_assoc(wpa_s, data);
3463                 if (data && data->assoc_info.authorized)
3464                         wpa_supplicant_event_assoc_auth(wpa_s, data);
3465                 if (data) {
3466                         wpa_msg(wpa_s, MSG_INFO,
3467                                 WPA_EVENT_SUBNET_STATUS_UPDATE "status=%u",
3468                                 data->assoc_info.subnet_status);
3469                 }
3470                 break;
3471         case EVENT_DISASSOC:
3472                 wpas_event_disassoc(wpa_s,
3473                                     data ? &data->disassoc_info : NULL);
3474                 break;
3475         case EVENT_DEAUTH:
3476 #ifdef CONFIG_TESTING_OPTIONS
3477                 if (wpa_s->ignore_auth_resp) {
3478                         wpa_printf(MSG_INFO,
3479                                    "EVENT_DEAUTH - ignore_auth_resp active!");
3480                         break;
3481                 }
3482 #endif /* CONFIG_TESTING_OPTIONS */
3483                 wpas_event_deauth(wpa_s,
3484                                   data ? &data->deauth_info : NULL);
3485                 break;
3486         case EVENT_MICHAEL_MIC_FAILURE:
3487                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3488                 break;
3489 #ifndef CONFIG_NO_SCAN_PROCESSING
3490         case EVENT_SCAN_STARTED:
3491                 if (wpa_s->own_scan_requested ||
3492                     (data && !data->scan_info.external_scan)) {
3493                         struct os_reltime diff;
3494
3495                         os_get_reltime(&wpa_s->scan_start_time);
3496                         os_reltime_sub(&wpa_s->scan_start_time,
3497                                        &wpa_s->scan_trigger_time, &diff);
3498                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3499                                 diff.sec, diff.usec);
3500                         wpa_s->own_scan_requested = 0;
3501                         wpa_s->own_scan_running = 1;
3502                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3503                             wpa_s->manual_scan_use_id) {
3504                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3505                                              WPA_EVENT_SCAN_STARTED "id=%u",
3506                                              wpa_s->manual_scan_id);
3507                         } else {
3508                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3509                                              WPA_EVENT_SCAN_STARTED);
3510                         }
3511                 } else {
3512                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3513                         wpa_s->radio->external_scan_running = 1;
3514                         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3515                 }
3516                 break;
3517         case EVENT_SCAN_RESULTS:
3518                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3519                         wpa_s->scan_res_handler = NULL;
3520                         wpa_s->own_scan_running = 0;
3521                         wpa_s->radio->external_scan_running = 0;
3522                         wpa_s->last_scan_req = NORMAL_SCAN_REQ;
3523                         break;
3524                 }
3525
3526                 if (!(data && data->scan_info.external_scan) &&
3527                     os_reltime_initialized(&wpa_s->scan_start_time)) {
3528                         struct os_reltime now, diff;
3529                         os_get_reltime(&now);
3530                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3531                         wpa_s->scan_start_time.sec = 0;
3532                         wpa_s->scan_start_time.usec = 0;
3533                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3534                                 diff.sec, diff.usec);
3535                 }
3536                 if (wpa_supplicant_event_scan_results(wpa_s, data))
3537                         break; /* interface may have been removed */
3538                 if (!(data && data->scan_info.external_scan))
3539                         wpa_s->own_scan_running = 0;
3540                 if (data && data->scan_info.nl_scan_event)
3541                         wpa_s->radio->external_scan_running = 0;
3542                 radio_work_check_next(wpa_s);
3543                 break;
3544 #endif /* CONFIG_NO_SCAN_PROCESSING */
3545         case EVENT_ASSOCINFO:
3546                 wpa_supplicant_event_associnfo(wpa_s, data);
3547                 break;
3548         case EVENT_INTERFACE_STATUS:
3549                 wpa_supplicant_event_interface_status(wpa_s, data);
3550                 break;
3551         case EVENT_PMKID_CANDIDATE:
3552                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3553                 break;
3554 #ifdef CONFIG_PEERKEY
3555         case EVENT_STKSTART:
3556                 wpa_supplicant_event_stkstart(wpa_s, data);
3557                 break;
3558 #endif /* CONFIG_PEERKEY */
3559 #ifdef CONFIG_TDLS
3560         case EVENT_TDLS:
3561                 wpa_supplicant_event_tdls(wpa_s, data);
3562                 break;
3563 #endif /* CONFIG_TDLS */
3564 #ifdef CONFIG_WNM
3565         case EVENT_WNM:
3566                 wpa_supplicant_event_wnm(wpa_s, data);
3567                 break;
3568 #endif /* CONFIG_WNM */
3569 #ifdef CONFIG_IEEE80211R
3570         case EVENT_FT_RESPONSE:
3571                 wpa_supplicant_event_ft_response(wpa_s, data);
3572                 break;
3573 #endif /* CONFIG_IEEE80211R */
3574 #ifdef CONFIG_IBSS_RSN
3575         case EVENT_IBSS_RSN_START:
3576                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3577                 break;
3578 #endif /* CONFIG_IBSS_RSN */
3579         case EVENT_ASSOC_REJECT:
3580                 if (data->assoc_reject.bssid)
3581                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3582                                 "bssid=" MACSTR " status_code=%u%s",
3583                                 MAC2STR(data->assoc_reject.bssid),
3584                                 data->assoc_reject.status_code,
3585                                 data->assoc_reject.timed_out ? " timeout" : "");
3586                 else
3587                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3588                                 "status_code=%u%s",
3589                                 data->assoc_reject.status_code,
3590                                 data->assoc_reject.timed_out ? " timeout" : "");
3591                 wpa_s->assoc_status_code = data->assoc_reject.status_code;
3592                 wpas_notify_assoc_status_code(wpa_s);
3593                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3594                         sme_event_assoc_reject(wpa_s, data);
3595                 else {
3596                         const u8 *bssid = data->assoc_reject.bssid;
3597                         if (bssid == NULL || is_zero_ether_addr(bssid))
3598                                 bssid = wpa_s->pending_bssid;
3599                         wpas_connection_failed(wpa_s, bssid);
3600                         wpa_supplicant_mark_disassoc(wpa_s);
3601                 }
3602                 break;
3603         case EVENT_AUTH_TIMED_OUT:
3604                 /* It is possible to get this event from earlier connection */
3605                 if (wpa_s->current_ssid &&
3606                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3607                         wpa_dbg(wpa_s, MSG_DEBUG,
3608                                 "Ignore AUTH_TIMED_OUT in mesh configuration");
3609                         break;
3610                 }
3611                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3612                         sme_event_auth_timed_out(wpa_s, data);
3613                 break;
3614         case EVENT_ASSOC_TIMED_OUT:
3615                 /* It is possible to get this event from earlier connection */
3616                 if (wpa_s->current_ssid &&
3617                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3618                         wpa_dbg(wpa_s, MSG_DEBUG,
3619                                 "Ignore ASSOC_TIMED_OUT in mesh configuration");
3620                         break;
3621                 }
3622                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3623                         sme_event_assoc_timed_out(wpa_s, data);
3624                 break;
3625         case EVENT_TX_STATUS:
3626                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3627                         " type=%d stype=%d",
3628                         MAC2STR(data->tx_status.dst),
3629                         data->tx_status.type, data->tx_status.stype);
3630 #ifdef CONFIG_AP
3631                 if (wpa_s->ap_iface == NULL) {
3632 #ifdef CONFIG_OFFCHANNEL
3633                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3634                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3635                                 offchannel_send_action_tx_status(
3636                                         wpa_s, data->tx_status.dst,
3637                                         data->tx_status.data,
3638                                         data->tx_status.data_len,
3639                                         data->tx_status.ack ?
3640                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3641                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3642 #endif /* CONFIG_OFFCHANNEL */
3643                         break;
3644                 }
3645 #endif /* CONFIG_AP */
3646 #ifdef CONFIG_OFFCHANNEL
3647                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3648                         MACSTR, MAC2STR(wpa_s->p2pdev->pending_action_dst));
3649                 /*
3650                  * Catch TX status events for Action frames we sent via group
3651                  * interface in GO mode, or via standalone AP interface.
3652                  * Note, wpa_s->p2pdev will be the same as wpa_s->parent,
3653                  * except when the primary interface is used as a GO interface
3654                  * (for drivers which do not have group interface concurrency)
3655                  */
3656                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3657                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3658                     os_memcmp(wpa_s->p2pdev->pending_action_dst,
3659                               data->tx_status.dst, ETH_ALEN) == 0) {
3660                         offchannel_send_action_tx_status(
3661                                 wpa_s->p2pdev, data->tx_status.dst,
3662                                 data->tx_status.data,
3663                                 data->tx_status.data_len,
3664                                 data->tx_status.ack ?
3665                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3666                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3667                         break;
3668                 }
3669 #endif /* CONFIG_OFFCHANNEL */
3670 #ifdef CONFIG_AP
3671                 switch (data->tx_status.type) {
3672                 case WLAN_FC_TYPE_MGMT:
3673                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3674                                       data->tx_status.data_len,
3675                                       data->tx_status.stype,
3676                                       data->tx_status.ack);
3677                         break;
3678                 case WLAN_FC_TYPE_DATA:
3679                         ap_tx_status(wpa_s, data->tx_status.dst,
3680                                      data->tx_status.data,
3681                                      data->tx_status.data_len,
3682                                      data->tx_status.ack);
3683                         break;
3684                 }
3685 #endif /* CONFIG_AP */
3686                 break;
3687 #ifdef CONFIG_AP
3688         case EVENT_EAPOL_TX_STATUS:
3689                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3690                                    data->eapol_tx_status.data,
3691                                    data->eapol_tx_status.data_len,
3692                                    data->eapol_tx_status.ack);
3693                 break;
3694         case EVENT_DRIVER_CLIENT_POLL_OK:
3695                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3696                 break;
3697         case EVENT_RX_FROM_UNKNOWN:
3698                 if (wpa_s->ap_iface == NULL)
3699                         break;
3700                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3701                                        data->rx_from_unknown.wds);
3702                 break;
3703         case EVENT_CH_SWITCH:
3704                 if (!data || !wpa_s->current_ssid)
3705                         break;
3706
3707                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CHANNEL_SWITCH
3708                         "freq=%d ht_enabled=%d ch_offset=%d ch_width=%s cf1=%d cf2=%d",
3709                         data->ch_switch.freq,
3710                         data->ch_switch.ht_enabled,
3711                         data->ch_switch.ch_offset,
3712                         channel_width_to_string(data->ch_switch.ch_width),
3713                         data->ch_switch.cf1,
3714                         data->ch_switch.cf2);
3715
3716                 wpa_s->assoc_freq = data->ch_switch.freq;
3717                 wpa_s->current_ssid->frequency = data->ch_switch.freq;
3718
3719                 if (wpa_s->current_ssid->mode == WPAS_MODE_AP ||
3720                     wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO ||
3721                     wpa_s->current_ssid->mode ==
3722                     WPAS_MODE_P2P_GROUP_FORMATION) {
3723                         wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3724                                           data->ch_switch.ht_enabled,
3725                                           data->ch_switch.ch_offset,
3726                                           data->ch_switch.ch_width,
3727                                           data->ch_switch.cf1,
3728                                           data->ch_switch.cf2);
3729                 }
3730
3731                 wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_CS);
3732                 break;
3733 #ifdef NEED_AP_MLME
3734         case EVENT_DFS_RADAR_DETECTED:
3735                 if (data)
3736                         wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event);
3737                 break;
3738         case EVENT_DFS_CAC_STARTED:
3739                 if (data)
3740                         wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
3741                 break;
3742         case EVENT_DFS_CAC_FINISHED:
3743                 if (data)
3744                         wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
3745                 break;
3746         case EVENT_DFS_CAC_ABORTED:
3747                 if (data)
3748                         wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
3749                 break;
3750         case EVENT_DFS_NOP_FINISHED:
3751                 if (data)
3752                         wpas_event_dfs_cac_nop_finished(wpa_s,
3753                                                         &data->dfs_event);
3754                 break;
3755 #endif /* NEED_AP_MLME */
3756 #endif /* CONFIG_AP */
3757         case EVENT_RX_MGMT: {
3758                 u16 fc, stype;
3759                 const struct ieee80211_mgmt *mgmt;
3760
3761 #ifdef CONFIG_TESTING_OPTIONS
3762                 if (wpa_s->ext_mgmt_frame_handling) {
3763                         struct rx_mgmt *rx = &data->rx_mgmt;
3764                         size_t hex_len = 2 * rx->frame_len + 1;
3765                         char *hex = os_malloc(hex_len);
3766                         if (hex) {
3767                                 wpa_snprintf_hex(hex, hex_len,
3768                                                  rx->frame, rx->frame_len);
3769                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3770                                         rx->freq, rx->datarate, rx->ssi_signal,
3771                                         hex);
3772                                 os_free(hex);
3773                         }
3774                         break;
3775                 }
3776 #endif /* CONFIG_TESTING_OPTIONS */
3777
3778                 mgmt = (const struct ieee80211_mgmt *)
3779                         data->rx_mgmt.frame;
3780                 fc = le_to_host16(mgmt->frame_control);
3781                 stype = WLAN_FC_GET_STYPE(fc);
3782
3783 #ifdef CONFIG_AP
3784                 if (wpa_s->ap_iface == NULL) {
3785 #endif /* CONFIG_AP */
3786 #ifdef CONFIG_P2P
3787                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3788                             data->rx_mgmt.frame_len > IEEE80211_HDRLEN) {
3789                                 const u8 *src = mgmt->sa;
3790                                 const u8 *ie;
3791                                 size_t ie_len;
3792
3793                                 ie = data->rx_mgmt.frame + IEEE80211_HDRLEN;
3794                                 ie_len = data->rx_mgmt.frame_len -
3795                                         IEEE80211_HDRLEN;
3796                                 wpas_p2p_probe_req_rx(
3797                                         wpa_s, src, mgmt->da,
3798                                         mgmt->bssid, ie, ie_len,
3799                                         data->rx_mgmt.freq,
3800                                         data->rx_mgmt.ssi_signal);
3801                                 break;
3802                         }
3803 #endif /* CONFIG_P2P */
3804 #ifdef CONFIG_IBSS_RSN
3805                         if (wpa_s->current_ssid &&
3806                             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3807                             stype == WLAN_FC_STYPE_AUTH &&
3808                             data->rx_mgmt.frame_len >= 30) {
3809                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3810                                 break;
3811                         }
3812 #endif /* CONFIG_IBSS_RSN */
3813
3814                         if (stype == WLAN_FC_STYPE_ACTION) {
3815                                 wpas_event_rx_mgmt_action(
3816                                         wpa_s, data->rx_mgmt.frame,
3817                                         data->rx_mgmt.frame_len,
3818                                         data->rx_mgmt.freq,
3819                                         data->rx_mgmt.ssi_signal);
3820                                 break;
3821                         }
3822
3823                         if (wpa_s->ifmsh) {
3824                                 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3825                                 break;
3826                         }
3827
3828                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3829                                 "management frame in non-AP mode");
3830                         break;
3831 #ifdef CONFIG_AP
3832                 }
3833
3834                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3835                     data->rx_mgmt.frame_len > IEEE80211_HDRLEN) {
3836                         const u8 *ie;
3837                         size_t ie_len;
3838
3839                         ie = data->rx_mgmt.frame + IEEE80211_HDRLEN;
3840                         ie_len = data->rx_mgmt.frame_len - IEEE80211_HDRLEN;
3841
3842                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3843                                          mgmt->bssid, ie, ie_len,
3844                                          data->rx_mgmt.ssi_signal);
3845                 }
3846
3847                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3848 #endif /* CONFIG_AP */
3849                 break;
3850                 }
3851         case EVENT_RX_PROBE_REQ:
3852                 if (data->rx_probe_req.sa == NULL ||
3853                     data->rx_probe_req.ie == NULL)
3854                         break;
3855 #ifdef CONFIG_AP
3856                 if (wpa_s->ap_iface) {
3857                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3858                                              data->rx_probe_req.sa,
3859                                              data->rx_probe_req.da,
3860                                              data->rx_probe_req.bssid,
3861                                              data->rx_probe_req.ie,
3862                                              data->rx_probe_req.ie_len,
3863                                              data->rx_probe_req.ssi_signal);
3864                         break;
3865                 }
3866 #endif /* CONFIG_AP */
3867                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3868                                       data->rx_probe_req.da,
3869                                       data->rx_probe_req.bssid,
3870                                       data->rx_probe_req.ie,
3871                                       data->rx_probe_req.ie_len,
3872                                       0,
3873                                       data->rx_probe_req.ssi_signal);
3874                 break;
3875         case EVENT_REMAIN_ON_CHANNEL:
3876 #ifdef CONFIG_OFFCHANNEL
3877                 offchannel_remain_on_channel_cb(
3878                         wpa_s, data->remain_on_channel.freq,
3879                         data->remain_on_channel.duration);
3880 #endif /* CONFIG_OFFCHANNEL */
3881                 wpas_p2p_remain_on_channel_cb(
3882                         wpa_s, data->remain_on_channel.freq,
3883                         data->remain_on_channel.duration);
3884                 break;
3885         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3886 #ifdef CONFIG_OFFCHANNEL
3887                 offchannel_cancel_remain_on_channel_cb(
3888                         wpa_s, data->remain_on_channel.freq);
3889 #endif /* CONFIG_OFFCHANNEL */
3890                 wpas_p2p_cancel_remain_on_channel_cb(
3891                         wpa_s, data->remain_on_channel.freq);
3892                 break;
3893         case EVENT_EAPOL_RX:
3894                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3895                                         data->eapol_rx.data,
3896                                         data->eapol_rx.data_len);
3897                 break;
3898         case EVENT_SIGNAL_CHANGE:
3899                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3900                         "above=%d signal=%d noise=%d txrate=%d",
3901                         data->signal_change.above_threshold,
3902                         data->signal_change.current_signal,
3903                         data->signal_change.current_noise,
3904                         data->signal_change.current_txrate);
3905                 wpa_bss_update_level(wpa_s->current_bss,
3906                                      data->signal_change.current_signal);
3907                 bgscan_notify_signal_change(
3908                         wpa_s, data->signal_change.above_threshold,
3909                         data->signal_change.current_signal,
3910                         data->signal_change.current_noise,
3911                         data->signal_change.current_txrate);
3912                 break;
3913         case EVENT_INTERFACE_ENABLED:
3914                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3915                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3916                         wpa_supplicant_update_mac_addr(wpa_s);
3917                         if (wpa_s->p2p_mgmt) {
3918                                 wpa_supplicant_set_state(wpa_s,
3919                                                          WPA_DISCONNECTED);
3920                                 break;
3921                         }
3922
3923 #ifdef CONFIG_AP
3924                         if (!wpa_s->ap_iface) {
3925                                 wpa_supplicant_set_state(wpa_s,
3926                                                          WPA_DISCONNECTED);
3927                                 wpa_s->scan_req = NORMAL_SCAN_REQ;
3928                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3929                         } else
3930                                 wpa_supplicant_set_state(wpa_s,
3931                                                          WPA_COMPLETED);
3932 #else /* CONFIG_AP */
3933                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3934                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3935 #endif /* CONFIG_AP */
3936                 }
3937                 break;
3938         case EVENT_INTERFACE_DISABLED:
3939                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3940 #ifdef CONFIG_P2P
3941                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3942                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3943                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3944                         /*
3945                          * Mark interface disabled if this happens to end up not
3946                          * being removed as a separate P2P group interface.
3947                          */
3948                         wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3949                         /*
3950                          * The interface was externally disabled. Remove
3951                          * it assuming an external entity will start a
3952                          * new session if needed.
3953                          */
3954                         if (wpa_s->current_ssid &&
3955                             wpa_s->current_ssid->p2p_group)
3956                                 wpas_p2p_interface_unavailable(wpa_s);
3957                         else
3958                                 wpas_p2p_disconnect(wpa_s);
3959                         /*
3960                          * wpa_s instance may have been freed, so must not use
3961                          * it here anymore.
3962                          */
3963                         break;
3964                 }
3965                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3966                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3967                         /* This radio work will be cancelled, so clear P2P
3968                          * state as well.
3969                          */
3970                         p2p_stop_find(wpa_s->global->p2p);
3971                 }
3972 #endif /* CONFIG_P2P */
3973
3974                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3975                         /*
3976                          * Indicate disconnection to keep ctrl_iface events
3977                          * consistent.
3978                          */
3979                         wpa_supplicant_event_disassoc(
3980                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3981                 }
3982                 wpa_supplicant_mark_disassoc(wpa_s);
3983                 wpa_bss_flush(wpa_s);
3984                 radio_remove_works(wpa_s, NULL, 0);
3985
3986                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3987                 break;
3988         case EVENT_CHANNEL_LIST_CHANGED:
3989                 wpa_supplicant_update_channel_list(
3990                         wpa_s, &data->channel_list_changed);
3991                 break;
3992         case EVENT_INTERFACE_UNAVAILABLE:
3993                 wpas_p2p_interface_unavailable(wpa_s);
3994                 break;
3995         case EVENT_BEST_CHANNEL:
3996                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3997                         "(%d %d %d)",
3998                         data->best_chan.freq_24, data->best_chan.freq_5,
3999                         data->best_chan.freq_overall);
4000                 wpa_s->best_24_freq = data->best_chan.freq_24;
4001                 wpa_s->best_5_freq = data->best_chan.freq_5;
4002                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
4003                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
4004                                               data->best_chan.freq_5,
4005                                               data->best_chan.freq_overall);
4006                 break;
4007         case EVENT_UNPROT_DEAUTH:
4008                 wpa_supplicant_event_unprot_deauth(wpa_s,
4009                                                    &data->unprot_deauth);
4010                 break;
4011         case EVENT_UNPROT_DISASSOC:
4012                 wpa_supplicant_event_unprot_disassoc(wpa_s,
4013                                                      &data->unprot_disassoc);
4014                 break;
4015         case EVENT_STATION_LOW_ACK:
4016 #ifdef CONFIG_AP
4017                 if (wpa_s->ap_iface && data)
4018                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
4019                                                   data->low_ack.addr);
4020 #endif /* CONFIG_AP */
4021 #ifdef CONFIG_TDLS
4022                 if (data)
4023                         wpa_tdls_disable_unreachable_link(wpa_s->wpa,
4024                                                           data->low_ack.addr);
4025 #endif /* CONFIG_TDLS */
4026                 break;
4027         case EVENT_IBSS_PEER_LOST:
4028 #ifdef CONFIG_IBSS_RSN
4029                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
4030 #endif /* CONFIG_IBSS_RSN */
4031                 break;
4032         case EVENT_DRIVER_GTK_REKEY:
4033                 if (os_memcmp(data->driver_gtk_rekey.bssid,
4034                               wpa_s->bssid, ETH_ALEN))
4035                         break;
4036                 if (!wpa_s->wpa)
4037                         break;
4038                 wpa_sm_update_replay_ctr(wpa_s->wpa,
4039                                          data->driver_gtk_rekey.replay_ctr);
4040                 break;
4041         case EVENT_SCHED_SCAN_STOPPED:
4042                 wpa_s->sched_scanning = 0;
4043                 resched = wpa_s->scanning && wpas_scan_scheduled(wpa_s);
4044                 wpa_supplicant_notify_scanning(wpa_s, 0);
4045
4046                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
4047                         break;
4048
4049                 /*
4050                  * Start a new sched scan to continue searching for more SSIDs
4051                  * either if timed out or PNO schedule scan is pending.
4052                  */
4053                 if (wpa_s->sched_scan_timed_out) {
4054                         wpa_supplicant_req_sched_scan(wpa_s);
4055                 } else if (wpa_s->pno_sched_pending) {
4056                         wpa_s->pno_sched_pending = 0;
4057                         wpas_start_pno(wpa_s);
4058                 } else if (resched) {
4059                         wpa_supplicant_req_scan(wpa_s, 0, 0);
4060                 }
4061
4062                 break;
4063         case EVENT_WPS_BUTTON_PUSHED:
4064 #ifdef CONFIG_WPS
4065                 wpas_wps_start_pbc(wpa_s, NULL, 0);
4066 #endif /* CONFIG_WPS */
4067                 break;
4068         case EVENT_AVOID_FREQUENCIES:
4069                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
4070                 break;
4071         case EVENT_CONNECT_FAILED_REASON:
4072 #ifdef CONFIG_AP
4073                 if (!wpa_s->ap_iface || !data)
4074                         break;
4075                 hostapd_event_connect_failed_reason(
4076                         wpa_s->ap_iface->bss[0],
4077                         data->connect_failed_reason.addr,
4078                         data->connect_failed_reason.code);
4079 #endif /* CONFIG_AP */
4080                 break;
4081         case EVENT_NEW_PEER_CANDIDATE:
4082 #ifdef CONFIG_MESH
4083                 if (!wpa_s->ifmsh || !data)
4084                         break;
4085                 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
4086                                      data->mesh_peer.ies,
4087                                      data->mesh_peer.ie_len);
4088 #endif /* CONFIG_MESH */
4089                 break;
4090         case EVENT_SURVEY:
4091 #ifdef CONFIG_AP
4092                 if (!wpa_s->ap_iface)
4093                         break;
4094                 hostapd_event_get_survey(wpa_s->ap_iface,
4095                                          &data->survey_results);
4096 #endif /* CONFIG_AP */
4097                 break;
4098         case EVENT_ACS_CHANNEL_SELECTED:
4099 #ifdef CONFIG_ACS
4100                 if (!wpa_s->ap_iface)
4101                         break;
4102                 hostapd_acs_channel_selected(wpa_s->ap_iface->bss[0],
4103                                              &data->acs_selected_channels);
4104 #endif /* CONFIG_ACS */
4105                 break;
4106         case EVENT_P2P_LO_STOP:
4107 #ifdef CONFIG_P2P
4108                 wpa_s->p2p_lo_started = 0;
4109                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_LISTEN_OFFLOAD_STOP
4110                         P2P_LISTEN_OFFLOAD_STOP_REASON "reason=%d",
4111                         data->p2p_lo_stop.reason_code);
4112 #endif /* CONFIG_P2P */
4113                 break;
4114         default:
4115                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
4116                 break;
4117         }
4118 }
4119
4120
4121 void wpa_supplicant_event_global(void *ctx, enum wpa_event_type event,
4122                                  union wpa_event_data *data)
4123 {
4124         struct wpa_supplicant *wpa_s;
4125
4126         if (event != EVENT_INTERFACE_STATUS)
4127                 return;
4128
4129         wpa_s = wpa_supplicant_get_iface(ctx, data->interface_status.ifname);
4130         if (wpa_s && wpa_s->driver->get_ifindex) {
4131                 unsigned int ifindex;
4132
4133                 ifindex = wpa_s->driver->get_ifindex(wpa_s->drv_priv);
4134                 if (ifindex != data->interface_status.ifindex) {
4135                         wpa_dbg(wpa_s, MSG_DEBUG,
4136                                 "interface status ifindex %d mismatch (%d)",
4137                                 ifindex, data->interface_status.ifindex);
4138                         return;
4139                 }
4140         }
4141 #ifdef CONFIG_MATCH_IFACE
4142         else if (data->interface_status.ievent == EVENT_INTERFACE_ADDED) {
4143                 struct wpa_interface *wpa_i;
4144
4145                 wpa_i = wpa_supplicant_match_iface(
4146                         ctx, data->interface_status.ifname);
4147                 if (!wpa_i)
4148                         return;
4149                 wpa_s = wpa_supplicant_add_iface(ctx, wpa_i, NULL);
4150                 os_free(wpa_i);
4151                 if (wpa_s)
4152                         wpa_s->matched = 1;
4153         }
4154 #endif /* CONFIG_MATCH_IFACE */
4155
4156         if (wpa_s)
4157                 wpa_supplicant_event(wpa_s, event, data);
4158 }