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 (!bss_is_ess(bss) && !bss_is_pbss(bss)) {
1018                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - neither ESS nor PBSS network");
1019                         continue;
1020                 }
1021
1022                 if (ssid->pbss != 2 && ssid->pbss != bss_is_pbss(bss)) {
1023                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - PBSS mismatch (ssid %d bss %d)",
1024                                 ssid->pbss, bss_is_pbss(bss));
1025                         continue;
1026                 }
1027
1028                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
1029                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
1030                                 "allowed");
1031                         continue;
1032                 }
1033
1034                 if (!rate_match(wpa_s, bss)) {
1035                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
1036                                 "not match");
1037                         continue;
1038                 }
1039
1040 #ifdef CONFIG_P2P
1041                 if (ssid->p2p_group &&
1042                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
1043                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
1044                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
1045                         continue;
1046                 }
1047
1048                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
1049                         struct wpabuf *p2p_ie;
1050                         u8 dev_addr[ETH_ALEN];
1051
1052                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
1053                         if (ie == NULL) {
1054                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
1055                                 continue;
1056                         }
1057                         p2p_ie = wpa_bss_get_vendor_ie_multi(
1058                                 bss, P2P_IE_VENDOR_TYPE);
1059                         if (p2p_ie == NULL) {
1060                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
1061                                 continue;
1062                         }
1063
1064                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
1065                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
1066                                          ETH_ALEN) != 0) {
1067                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
1068                                 wpabuf_free(p2p_ie);
1069                                 continue;
1070                         }
1071                         wpabuf_free(p2p_ie);
1072                 }
1073
1074                 /*
1075                  * TODO: skip the AP if its P2P IE has Group Formation
1076                  * bit set in the P2P Group Capability Bitmap and we
1077                  * are not in Group Formation with that device.
1078                  */
1079 #endif /* CONFIG_P2P */
1080
1081                 if (os_reltime_before(&bss->last_update, &wpa_s->scan_min_time))
1082                 {
1083                         struct os_reltime diff;
1084
1085                         os_reltime_sub(&wpa_s->scan_min_time,
1086                                        &bss->last_update, &diff);
1087                         wpa_dbg(wpa_s, MSG_DEBUG,
1088                                 "   skip - scan result not recent enough (%u.%06u seconds too old)",
1089                                 (unsigned int) diff.sec,
1090                                 (unsigned int) diff.usec);
1091                         continue;
1092                 }
1093 #ifdef CONFIG_MBO
1094                 assoc_disallow = wpas_mbo_get_bss_attr(
1095                         bss, MBO_ATTR_ID_ASSOC_DISALLOW);
1096                 if (assoc_disallow && assoc_disallow[1] >= 1) {
1097                         wpa_dbg(wpa_s, MSG_DEBUG,
1098                                 "   skip - MBO association disallowed (reason %u)",
1099                                 assoc_disallow[2]);
1100                         continue;
1101                 }
1102
1103                 if (wpa_is_bss_tmp_disallowed(wpa_s, bss->bssid)) {
1104                         wpa_dbg(wpa_s, MSG_DEBUG,
1105                                 "   skip - MBO retry delay has not passed yet");
1106                         continue;
1107                 }
1108 #endif /* CONFIG_MBO */
1109
1110                 /* Matching configuration found */
1111                 return ssid;
1112         }
1113
1114         /* No matching configuration found */
1115         return NULL;
1116 }
1117
1118
1119 static struct wpa_bss *
1120 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
1121                           struct wpa_ssid *group,
1122                           struct wpa_ssid **selected_ssid,
1123                           int only_first_ssid)
1124 {
1125         unsigned int i;
1126
1127         if (only_first_ssid)
1128                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
1129                         group->id);
1130         else
1131                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
1132                         group->priority);
1133
1134         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
1135                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
1136                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
1137                                                     only_first_ssid);
1138                 if (!*selected_ssid)
1139                         continue;
1140                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
1141                         " ssid='%s'",
1142                         MAC2STR(bss->bssid),
1143                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
1144                 return bss;
1145         }
1146
1147         return NULL;
1148 }
1149
1150
1151 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1152                                              struct wpa_ssid **selected_ssid)
1153 {
1154         struct wpa_bss *selected = NULL;
1155         int prio;
1156         struct wpa_ssid *next_ssid = NULL;
1157         struct wpa_ssid *ssid;
1158
1159         if (wpa_s->last_scan_res == NULL ||
1160             wpa_s->last_scan_res_used == 0)
1161                 return NULL; /* no scan results from last update */
1162
1163         if (wpa_s->next_ssid) {
1164                 /* check that next_ssid is still valid */
1165                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1166                         if (ssid == wpa_s->next_ssid)
1167                                 break;
1168                 }
1169                 next_ssid = ssid;
1170                 wpa_s->next_ssid = NULL;
1171         }
1172
1173         while (selected == NULL) {
1174                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1175                         if (next_ssid && next_ssid->priority ==
1176                             wpa_s->conf->pssid[prio]->priority) {
1177                                 selected = wpa_supplicant_select_bss(
1178                                         wpa_s, next_ssid, selected_ssid, 1);
1179                                 if (selected)
1180                                         break;
1181                         }
1182                         selected = wpa_supplicant_select_bss(
1183                                 wpa_s, wpa_s->conf->pssid[prio],
1184                                 selected_ssid, 0);
1185                         if (selected)
1186                                 break;
1187                 }
1188
1189                 if (selected == NULL && wpa_s->blacklist &&
1190                     !wpa_s->countermeasures) {
1191                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1192                                 "blacklist and try again");
1193                         wpa_blacklist_clear(wpa_s);
1194                         wpa_s->blacklist_cleared++;
1195                 } else if (selected == NULL)
1196                         break;
1197         }
1198
1199         ssid = *selected_ssid;
1200         if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set &&
1201             !ssid->passphrase && !ssid->ext_psk) {
1202                 const char *field_name, *txt = NULL;
1203
1204                 wpa_dbg(wpa_s, MSG_DEBUG,
1205                         "PSK/passphrase not yet available for the selected network");
1206
1207                 wpas_notify_network_request(wpa_s, ssid,
1208                                             WPA_CTRL_REQ_PSK_PASSPHRASE, NULL);
1209
1210                 field_name = wpa_supplicant_ctrl_req_to_string(
1211                         WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt);
1212                 if (field_name == NULL)
1213                         return NULL;
1214
1215                 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
1216
1217                 selected = NULL;
1218         }
1219
1220         return selected;
1221 }
1222
1223
1224 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1225                                         int timeout_sec, int timeout_usec)
1226 {
1227         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1228                 /*
1229                  * No networks are enabled; short-circuit request so
1230                  * we don't wait timeout seconds before transitioning
1231                  * to INACTIVE state.
1232                  */
1233                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1234                         "since there are no enabled networks");
1235                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1236                 return;
1237         }
1238
1239         wpa_s->scan_for_connection = 1;
1240         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1241 }
1242
1243
1244 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1245                            struct wpa_bss *selected,
1246                            struct wpa_ssid *ssid)
1247 {
1248         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1249                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1250                         "PBC session overlap");
1251                 wpas_notify_wps_event_pbc_overlap(wpa_s);
1252 #ifdef CONFIG_P2P
1253                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1254                     wpa_s->p2p_in_provisioning) {
1255                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1256                                                wpa_s, NULL);
1257                         return -1;
1258                 }
1259 #endif /* CONFIG_P2P */
1260
1261 #ifdef CONFIG_WPS
1262                 wpas_wps_pbc_overlap(wpa_s);
1263                 wpas_wps_cancel(wpa_s);
1264 #endif /* CONFIG_WPS */
1265                 return -1;
1266         }
1267
1268         wpa_msg(wpa_s, MSG_DEBUG,
1269                 "Considering connect request: reassociate: %d  selected: "
1270                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1271                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1272                 wpa_s->reassociate, MAC2STR(selected->bssid),
1273                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1274                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1275                 ssid, wpa_s->current_ssid);
1276
1277         /*
1278          * Do not trigger new association unless the BSSID has changed or if
1279          * reassociation is requested. If we are in process of associating with
1280          * the selected BSSID, do not trigger new attempt.
1281          */
1282         if (wpa_s->reassociate ||
1283             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1284              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1285                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1286               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1287                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1288                0) ||
1289               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1290                ssid != wpa_s->current_ssid)))) {
1291                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1292                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1293                         return 0;
1294                 }
1295                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1296                         MAC2STR(selected->bssid));
1297                 wpa_supplicant_associate(wpa_s, selected, ssid);
1298         } else {
1299                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1300                         "connect with the selected AP");
1301         }
1302
1303         return 0;
1304 }
1305
1306
1307 static struct wpa_ssid *
1308 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1309 {
1310         int prio;
1311         struct wpa_ssid *ssid;
1312
1313         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1314                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1315                 {
1316                         if (wpas_network_disabled(wpa_s, ssid))
1317                                 continue;
1318                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1319                             ssid->mode == IEEE80211_MODE_AP ||
1320                             ssid->mode == IEEE80211_MODE_MESH)
1321                                 return ssid;
1322                 }
1323         }
1324         return NULL;
1325 }
1326
1327
1328 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1329  * on BSS added and BSS changed events */
1330 static void wpa_supplicant_rsn_preauth_scan_results(
1331         struct wpa_supplicant *wpa_s)
1332 {
1333         struct wpa_bss *bss;
1334
1335         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1336                 return;
1337
1338         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1339                 const u8 *ssid, *rsn;
1340
1341                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1342                 if (ssid == NULL)
1343                         continue;
1344
1345                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1346                 if (rsn == NULL)
1347                         continue;
1348
1349                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1350         }
1351
1352 }
1353
1354
1355 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1356                                        struct wpa_bss *selected,
1357                                        struct wpa_ssid *ssid)
1358 {
1359         struct wpa_bss *current_bss = NULL;
1360 #ifndef CONFIG_NO_ROAMING
1361         int min_diff;
1362         int to_5ghz;
1363 #endif /* CONFIG_NO_ROAMING */
1364
1365         if (wpa_s->reassociate)
1366                 return 1; /* explicit request to reassociate */
1367         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1368                 return 1; /* we are not associated; continue */
1369         if (wpa_s->current_ssid == NULL)
1370                 return 1; /* unknown current SSID */
1371         if (wpa_s->current_ssid != ssid)
1372                 return 1; /* different network block */
1373
1374         if (wpas_driver_bss_selection(wpa_s))
1375                 return 0; /* Driver-based roaming */
1376
1377         if (wpa_s->current_ssid->ssid)
1378                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1379                                           wpa_s->current_ssid->ssid,
1380                                           wpa_s->current_ssid->ssid_len);
1381         if (!current_bss)
1382                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1383
1384         if (!current_bss)
1385                 return 1; /* current BSS not seen in scan results */
1386
1387         if (current_bss == selected)
1388                 return 0;
1389
1390         if (selected->last_update_idx > current_bss->last_update_idx)
1391                 return 1; /* current BSS not seen in the last scan */
1392
1393 #ifndef CONFIG_NO_ROAMING
1394         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1395         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
1396                 " level=%d snr=%d est_throughput=%u",
1397                 MAC2STR(current_bss->bssid), current_bss->level,
1398                 current_bss->snr, current_bss->est_throughput);
1399         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
1400                 " level=%d snr=%d est_throughput=%u",
1401                 MAC2STR(selected->bssid), selected->level,
1402                 selected->snr, selected->est_throughput);
1403
1404         if (wpa_s->current_ssid->bssid_set &&
1405             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1406             0) {
1407                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1408                         "has preferred BSSID");
1409                 return 1;
1410         }
1411
1412         if (selected->est_throughput > current_bss->est_throughput + 5000) {
1413                 wpa_dbg(wpa_s, MSG_DEBUG,
1414                         "Allow reassociation - selected BSS has better estimated throughput");
1415                 return 1;
1416         }
1417
1418         to_5ghz = selected->freq > 4000 && current_bss->freq < 4000;
1419
1420         if (current_bss->level < 0 &&
1421             current_bss->level > selected->level + to_5ghz * 2) {
1422                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1423                         "signal level");
1424                 return 0;
1425         }
1426
1427         min_diff = 2;
1428         if (current_bss->level < 0) {
1429                 if (current_bss->level < -85)
1430                         min_diff = 1;
1431                 else if (current_bss->level < -80)
1432                         min_diff = 2;
1433                 else if (current_bss->level < -75)
1434                         min_diff = 3;
1435                 else if (current_bss->level < -70)
1436                         min_diff = 4;
1437                 else
1438                         min_diff = 5;
1439         }
1440         if (to_5ghz) {
1441                 /* Make it easier to move to 5 GHz band */
1442                 if (min_diff > 2)
1443                         min_diff -= 2;
1444                 else
1445                         min_diff = 0;
1446         }
1447         if (abs(current_bss->level - selected->level) < min_diff) {
1448                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1449                         "in signal level");
1450                 return 0;
1451         }
1452
1453         return 1;
1454 #else /* CONFIG_NO_ROAMING */
1455         return 0;
1456 #endif /* CONFIG_NO_ROAMING */
1457 }
1458
1459
1460 /* Return != 0 if no scan results could be fetched or if scan results should not
1461  * be shared with other virtual interfaces. */
1462 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1463                                               union wpa_event_data *data,
1464                                               int own_request)
1465 {
1466         struct wpa_scan_results *scan_res = NULL;
1467         int ret = 0;
1468         int ap = 0;
1469 #ifndef CONFIG_NO_RANDOM_POOL
1470         size_t i, num;
1471 #endif /* CONFIG_NO_RANDOM_POOL */
1472
1473 #ifdef CONFIG_AP
1474         if (wpa_s->ap_iface)
1475                 ap = 1;
1476 #endif /* CONFIG_AP */
1477
1478         wpa_supplicant_notify_scanning(wpa_s, 0);
1479
1480         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1481                                                    data ? &data->scan_info :
1482                                                    NULL, 1);
1483         if (scan_res == NULL) {
1484                 if (wpa_s->conf->ap_scan == 2 || ap ||
1485                     wpa_s->scan_res_handler == scan_only_handler)
1486                         return -1;
1487                 if (!own_request)
1488                         return -1;
1489                 if (data && data->scan_info.external_scan)
1490                         return -1;
1491                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1492                         "scanning again");
1493                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1494                 ret = -1;
1495                 goto scan_work_done;
1496         }
1497
1498 #ifndef CONFIG_NO_RANDOM_POOL
1499         num = scan_res->num;
1500         if (num > 10)
1501                 num = 10;
1502         for (i = 0; i < num; i++) {
1503                 u8 buf[5];
1504                 struct wpa_scan_res *res = scan_res->res[i];
1505                 buf[0] = res->bssid[5];
1506                 buf[1] = res->qual & 0xff;
1507                 buf[2] = res->noise & 0xff;
1508                 buf[3] = res->level & 0xff;
1509                 buf[4] = res->tsf & 0xff;
1510                 random_add_randomness(buf, sizeof(buf));
1511         }
1512 #endif /* CONFIG_NO_RANDOM_POOL */
1513
1514         if (own_request && wpa_s->scan_res_handler &&
1515             !(data && data->scan_info.external_scan)) {
1516                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1517                                          struct wpa_scan_results *scan_res);
1518
1519                 scan_res_handler = wpa_s->scan_res_handler;
1520                 wpa_s->scan_res_handler = NULL;
1521                 scan_res_handler(wpa_s, scan_res);
1522                 ret = -2;
1523                 goto scan_work_done;
1524         }
1525
1526         if (ap) {
1527                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1528 #ifdef CONFIG_AP
1529                 if (wpa_s->ap_iface->scan_cb)
1530                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1531 #endif /* CONFIG_AP */
1532                 goto scan_work_done;
1533         }
1534
1535         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1536                 wpa_s->own_scan_running,
1537                 data ? data->scan_info.external_scan : 0);
1538         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1539             wpa_s->manual_scan_use_id && wpa_s->own_scan_running &&
1540             own_request && !(data && data->scan_info.external_scan)) {
1541                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1542                              wpa_s->manual_scan_id);
1543                 wpa_s->manual_scan_use_id = 0;
1544         } else {
1545                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1546         }
1547         wpas_notify_scan_results(wpa_s);
1548
1549         wpas_notify_scan_done(wpa_s, 1);
1550
1551         if (data && data->scan_info.external_scan) {
1552                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1553                 wpa_scan_results_free(scan_res);
1554                 return 0;
1555         }
1556
1557         if (wnm_scan_process(wpa_s, 1) > 0)
1558                 goto scan_work_done;
1559
1560         if (sme_proc_obss_scan(wpa_s) > 0)
1561                 goto scan_work_done;
1562
1563         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1564                 goto scan_work_done;
1565
1566         if (autoscan_notify_scan(wpa_s, scan_res))
1567                 goto scan_work_done;
1568
1569         if (wpa_s->disconnected) {
1570                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1571                 goto scan_work_done;
1572         }
1573
1574         if (!wpas_driver_bss_selection(wpa_s) &&
1575             bgscan_notify_scan(wpa_s, scan_res) == 1)
1576                 goto scan_work_done;
1577
1578         wpas_wps_update_ap_info(wpa_s, scan_res);
1579
1580         if (wpa_s->wpa_state >= WPA_AUTHENTICATING &&
1581             wpa_s->wpa_state < WPA_COMPLETED)
1582                 goto scan_work_done;
1583
1584         wpa_scan_results_free(scan_res);
1585
1586         if (own_request && wpa_s->scan_work) {
1587                 struct wpa_radio_work *work = wpa_s->scan_work;
1588                 wpa_s->scan_work = NULL;
1589                 radio_work_done(work);
1590         }
1591
1592         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1593
1594 scan_work_done:
1595         wpa_scan_results_free(scan_res);
1596         if (own_request && wpa_s->scan_work) {
1597                 struct wpa_radio_work *work = wpa_s->scan_work;
1598                 wpa_s->scan_work = NULL;
1599                 radio_work_done(work);
1600         }
1601         return ret;
1602 }
1603
1604
1605 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1606                                               int new_scan, int own_request)
1607 {
1608         struct wpa_bss *selected;
1609         struct wpa_ssid *ssid = NULL;
1610         int time_to_reenable = wpas_reenabled_network_time(wpa_s);
1611
1612         if (time_to_reenable > 0) {
1613                 wpa_dbg(wpa_s, MSG_DEBUG,
1614                         "Postpone network selection by %d seconds since all networks are disabled",
1615                         time_to_reenable);
1616                 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
1617                 eloop_register_timeout(time_to_reenable, 0,
1618                                        wpas_network_reenabled, wpa_s, NULL);
1619                 return 0;
1620         }
1621
1622         if (wpa_s->p2p_mgmt)
1623                 return 0; /* no normal connection on p2p_mgmt interface */
1624
1625         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1626
1627         if (selected) {
1628                 int skip;
1629                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1630                 if (skip) {
1631                         if (new_scan)
1632                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1633                         return 0;
1634                 }
1635
1636                 if (ssid != wpa_s->current_ssid &&
1637                     wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1638                         wpa_s->own_disconnect_req = 1;
1639                         wpa_supplicant_deauthenticate(
1640                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1641                 }
1642
1643                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1644                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1645                         return -1;
1646                 }
1647                 if (new_scan)
1648                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1649                 /*
1650                  * Do not notify other virtual radios of scan results since we do not
1651                  * want them to start other associations at the same time.
1652                  */
1653                 return 1;
1654         } else {
1655 #ifdef CONFIG_MESH
1656                 if (wpa_s->ifmsh) {
1657                         wpa_msg(wpa_s, MSG_INFO,
1658                                 "Avoiding join because we already joined a mesh group");
1659                         return 0;
1660                 }
1661 #endif /* CONFIG_MESH */
1662                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1663                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1664                 if (ssid) {
1665                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1666                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1667                         if (new_scan)
1668                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1669                 } else if (own_request) {
1670                         /*
1671                          * No SSID found. If SCAN results are as a result of
1672                          * own scan request and not due to a scan request on
1673                          * another shared interface, try another scan.
1674                          */
1675                         int timeout_sec = wpa_s->scan_interval;
1676                         int timeout_usec = 0;
1677 #ifdef CONFIG_P2P
1678                         int res;
1679
1680                         res = wpas_p2p_scan_no_go_seen(wpa_s);
1681                         if (res == 2)
1682                                 return 2;
1683                         if (res == 1)
1684                                 return 0;
1685
1686                         if (wpa_s->p2p_in_provisioning ||
1687                             wpa_s->show_group_started ||
1688                             wpa_s->p2p_in_invitation) {
1689                                 /*
1690                                  * Use shorter wait during P2P Provisioning
1691                                  * state and during P2P join-a-group operation
1692                                  * to speed up group formation.
1693                                  */
1694                                 timeout_sec = 0;
1695                                 timeout_usec = 250000;
1696                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1697                                                             timeout_usec);
1698                                 return 0;
1699                         }
1700 #endif /* CONFIG_P2P */
1701 #ifdef CONFIG_INTERWORKING
1702                         if (wpa_s->conf->auto_interworking &&
1703                             wpa_s->conf->interworking &&
1704                             wpa_s->conf->cred) {
1705                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1706                                         "start ANQP fetch since no matching "
1707                                         "networks found");
1708                                 wpa_s->network_select = 1;
1709                                 wpa_s->auto_network_select = 1;
1710                                 interworking_start_fetch_anqp(wpa_s);
1711                                 return 1;
1712                         }
1713 #endif /* CONFIG_INTERWORKING */
1714 #ifdef CONFIG_WPS
1715                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1716                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1717                                 timeout_sec = 0;
1718                                 timeout_usec = 500000;
1719                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1720                                                             timeout_usec);
1721                                 return 0;
1722                         }
1723 #endif /* CONFIG_WPS */
1724                         if (wpa_supplicant_req_sched_scan(wpa_s))
1725                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1726                                                             timeout_usec);
1727
1728                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1729                                      WPA_EVENT_NETWORK_NOT_FOUND);
1730                 }
1731         }
1732         return 0;
1733 }
1734
1735
1736 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1737                                              union wpa_event_data *data)
1738 {
1739         struct wpa_supplicant *ifs;
1740         int res;
1741
1742         res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1743         if (res == 2) {
1744                 /*
1745                  * Interface may have been removed, so must not dereference
1746                  * wpa_s after this.
1747                  */
1748                 return 1;
1749         }
1750         if (res != 0) {
1751                 /*
1752                  * If no scan results could be fetched, then no need to
1753                  * notify those interfaces that did not actually request
1754                  * this scan. Similarly, if scan results started a new operation on this
1755                  * interface, do not notify other interfaces to avoid concurrent
1756                  * operations during a connection attempt.
1757                  */
1758                 return 0;
1759         }
1760
1761         /*
1762          * Check other interfaces to see if they share the same radio. If
1763          * so, they get updated with this same scan info.
1764          */
1765         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1766                          radio_list) {
1767                 if (ifs != wpa_s) {
1768                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1769                                    "sibling", ifs->ifname);
1770                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1771                 }
1772         }
1773
1774         return 0;
1775 }
1776
1777 #endif /* CONFIG_NO_SCAN_PROCESSING */
1778
1779
1780 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1781 {
1782 #ifdef CONFIG_NO_SCAN_PROCESSING
1783         return -1;
1784 #else /* CONFIG_NO_SCAN_PROCESSING */
1785         struct os_reltime now;
1786
1787         if (wpa_s->last_scan_res_used == 0)
1788                 return -1;
1789
1790         os_get_reltime(&now);
1791         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1792                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1793                 return -1;
1794         }
1795
1796         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1797 #endif /* CONFIG_NO_SCAN_PROCESSING */
1798 }
1799
1800 #ifdef CONFIG_WNM
1801
1802 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1803 {
1804         struct wpa_supplicant *wpa_s = eloop_ctx;
1805
1806         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1807                 return;
1808
1809         if (!wpa_s->no_keep_alive) {
1810                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1811                            MAC2STR(wpa_s->bssid));
1812                 /* TODO: could skip this if normal data traffic has been sent */
1813                 /* TODO: Consider using some more appropriate data frame for
1814                  * this */
1815                 if (wpa_s->l2)
1816                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1817                                        (u8 *) "", 0);
1818         }
1819
1820 #ifdef CONFIG_SME
1821         if (wpa_s->sme.bss_max_idle_period) {
1822                 unsigned int msec;
1823                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1824                 if (msec > 100)
1825                         msec -= 100;
1826                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1827                                        wnm_bss_keep_alive, wpa_s, NULL);
1828         }
1829 #endif /* CONFIG_SME */
1830 }
1831
1832
1833 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1834                                    const u8 *ies, size_t ies_len)
1835 {
1836         struct ieee802_11_elems elems;
1837
1838         if (ies == NULL)
1839                 return;
1840
1841         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1842                 return;
1843
1844 #ifdef CONFIG_SME
1845         if (elems.bss_max_idle_period) {
1846                 unsigned int msec;
1847                 wpa_s->sme.bss_max_idle_period =
1848                         WPA_GET_LE16(elems.bss_max_idle_period);
1849                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1850                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1851                            (elems.bss_max_idle_period[2] & 0x01) ?
1852                            " (protected keep-live required)" : "");
1853                 if (wpa_s->sme.bss_max_idle_period == 0)
1854                         wpa_s->sme.bss_max_idle_period = 1;
1855                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1856                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1857                          /* msec times 1000 */
1858                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1859                         if (msec > 100)
1860                                 msec -= 100;
1861                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1862                                                wnm_bss_keep_alive, wpa_s,
1863                                                NULL);
1864                 }
1865         }
1866 #endif /* CONFIG_SME */
1867 }
1868
1869 #endif /* CONFIG_WNM */
1870
1871
1872 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1873 {
1874 #ifdef CONFIG_WNM
1875         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1876 #endif /* CONFIG_WNM */
1877 }
1878
1879
1880 #ifdef CONFIG_INTERWORKING
1881
1882 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1883                             size_t len)
1884 {
1885         int res;
1886
1887         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1888         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1889         if (res) {
1890                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1891         }
1892
1893         return res;
1894 }
1895
1896
1897 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1898                                             const u8 *ies, size_t ies_len)
1899 {
1900         struct ieee802_11_elems elems;
1901
1902         if (ies == NULL)
1903                 return;
1904
1905         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1906                 return;
1907
1908         if (elems.qos_map_set) {
1909                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1910                                  elems.qos_map_set_len);
1911         }
1912 }
1913
1914 #endif /* CONFIG_INTERWORKING */
1915
1916
1917 #ifdef CONFIG_FST
1918 static int wpas_fst_update_mbie(struct wpa_supplicant *wpa_s,
1919                                 const u8 *ie, size_t ie_len)
1920 {
1921         struct mb_ies_info mb_ies;
1922
1923         if (!ie || !ie_len || !wpa_s->fst)
1924             return -ENOENT;
1925
1926         os_memset(&mb_ies, 0, sizeof(mb_ies));
1927
1928         while (ie_len >= 2 && mb_ies.nof_ies < MAX_NOF_MB_IES_SUPPORTED) {
1929                 size_t len;
1930
1931                 len = 2 + ie[1];
1932                 if (len > ie_len) {
1933                         wpa_hexdump(MSG_DEBUG, "FST: Truncated IE found",
1934                                     ie, ie_len);
1935                         break;
1936                 }
1937
1938                 if (ie[0] == WLAN_EID_MULTI_BAND) {
1939                         wpa_printf(MSG_DEBUG, "MB IE of %u bytes found",
1940                                    (unsigned int) len);
1941                         mb_ies.ies[mb_ies.nof_ies].ie = ie + 2;
1942                         mb_ies.ies[mb_ies.nof_ies].ie_len = len - 2;
1943                         mb_ies.nof_ies++;
1944                 }
1945
1946                 ie_len -= len;
1947                 ie += len;
1948         }
1949
1950         if (mb_ies.nof_ies > 0) {
1951                 wpabuf_free(wpa_s->received_mb_ies);
1952                 wpa_s->received_mb_ies = mb_ies_by_info(&mb_ies);
1953                 return 0;
1954         }
1955
1956         return -ENOENT;
1957 }
1958 #endif /* CONFIG_FST */
1959
1960
1961 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1962                                           union wpa_event_data *data)
1963 {
1964         int l, len, found = 0, wpa_found, rsn_found;
1965         const u8 *p;
1966 #ifdef CONFIG_IEEE80211R
1967         u8 bssid[ETH_ALEN];
1968 #endif /* CONFIG_IEEE80211R */
1969
1970         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1971         if (data->assoc_info.req_ies)
1972                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1973                             data->assoc_info.req_ies_len);
1974         if (data->assoc_info.resp_ies) {
1975                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1976                             data->assoc_info.resp_ies_len);
1977 #ifdef CONFIG_TDLS
1978                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1979                                         data->assoc_info.resp_ies_len);
1980 #endif /* CONFIG_TDLS */
1981 #ifdef CONFIG_WNM
1982                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1983                                        data->assoc_info.resp_ies_len);
1984 #endif /* CONFIG_WNM */
1985 #ifdef CONFIG_INTERWORKING
1986                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1987                                                 data->assoc_info.resp_ies_len);
1988 #endif /* CONFIG_INTERWORKING */
1989         }
1990         if (data->assoc_info.beacon_ies)
1991                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1992                             data->assoc_info.beacon_ies,
1993                             data->assoc_info.beacon_ies_len);
1994         if (data->assoc_info.freq)
1995                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1996                         data->assoc_info.freq);
1997
1998         p = data->assoc_info.req_ies;
1999         l = data->assoc_info.req_ies_len;
2000
2001         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
2002         while (p && l >= 2) {
2003                 len = p[1] + 2;
2004                 if (len > l) {
2005                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
2006                                     p, l);
2007                         break;
2008                 }
2009                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
2010                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
2011                     (p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 4 &&
2012                      (os_memcmp(&p[2], "\x50\x6F\x9A\x12", 4) == 0)) ||
2013                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
2014                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
2015                                 break;
2016                         found = 1;
2017                         wpa_find_assoc_pmkid(wpa_s);
2018                         break;
2019                 }
2020                 l -= len;
2021                 p += len;
2022         }
2023         if (!found && data->assoc_info.req_ies)
2024                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
2025
2026 #ifdef CONFIG_IEEE80211R
2027 #ifdef CONFIG_SME
2028         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
2029                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
2030                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
2031                                                  data->assoc_info.resp_ies,
2032                                                  data->assoc_info.resp_ies_len,
2033                                                  bssid) < 0) {
2034                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
2035                                 "Reassociation Response failed");
2036                         wpa_supplicant_deauthenticate(
2037                                 wpa_s, WLAN_REASON_INVALID_IE);
2038                         return -1;
2039                 }
2040         }
2041
2042         p = data->assoc_info.resp_ies;
2043         l = data->assoc_info.resp_ies_len;
2044
2045 #ifdef CONFIG_WPS_STRICT
2046         if (p && wpa_s->current_ssid &&
2047             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
2048                 struct wpabuf *wps;
2049                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
2050                 if (wps == NULL) {
2051                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
2052                                 "include WPS IE in (Re)Association Response");
2053                         return -1;
2054                 }
2055
2056                 if (wps_validate_assoc_resp(wps) < 0) {
2057                         wpabuf_free(wps);
2058                         wpa_supplicant_deauthenticate(
2059                                 wpa_s, WLAN_REASON_INVALID_IE);
2060                         return -1;
2061                 }
2062                 wpabuf_free(wps);
2063         }
2064 #endif /* CONFIG_WPS_STRICT */
2065
2066         /* Go through the IEs and make a copy of the MDIE, if present. */
2067         while (p && l >= 2) {
2068                 len = p[1] + 2;
2069                 if (len > l) {
2070                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
2071                                     p, l);
2072                         break;
2073                 }
2074                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
2075                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
2076                         wpa_s->sme.ft_used = 1;
2077                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
2078                                   MOBILITY_DOMAIN_ID_LEN);
2079                         break;
2080                 }
2081                 l -= len;
2082                 p += len;
2083         }
2084 #endif /* CONFIG_SME */
2085
2086         /* Process FT when SME is in the driver */
2087         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
2088             wpa_ft_is_completed(wpa_s->wpa)) {
2089                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
2090                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
2091                                                  data->assoc_info.resp_ies,
2092                                                  data->assoc_info.resp_ies_len,
2093                                                  bssid) < 0) {
2094                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
2095                                 "Reassociation Response failed");
2096                         wpa_supplicant_deauthenticate(
2097                                 wpa_s, WLAN_REASON_INVALID_IE);
2098                         return -1;
2099                 }
2100                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
2101         }
2102
2103         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
2104                              data->assoc_info.resp_ies_len);
2105 #endif /* CONFIG_IEEE80211R */
2106
2107         /* WPA/RSN IE from Beacon/ProbeResp */
2108         p = data->assoc_info.beacon_ies;
2109         l = data->assoc_info.beacon_ies_len;
2110
2111         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
2112          */
2113         wpa_found = rsn_found = 0;
2114         while (p && l >= 2) {
2115                 len = p[1] + 2;
2116                 if (len > l) {
2117                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
2118                                     p, l);
2119                         break;
2120                 }
2121                 if (!wpa_found &&
2122                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
2123                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
2124                         wpa_found = 1;
2125                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
2126                 }
2127
2128                 if (!rsn_found &&
2129                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
2130                         rsn_found = 1;
2131                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
2132                 }
2133
2134                 l -= len;
2135                 p += len;
2136         }
2137
2138         if (!wpa_found && data->assoc_info.beacon_ies)
2139                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
2140         if (!rsn_found && data->assoc_info.beacon_ies)
2141                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
2142         if (wpa_found || rsn_found)
2143                 wpa_s->ap_ies_from_associnfo = 1;
2144
2145         if (wpa_s->assoc_freq && data->assoc_info.freq &&
2146             wpa_s->assoc_freq != data->assoc_info.freq) {
2147                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
2148                            "%u to %u MHz",
2149                            wpa_s->assoc_freq, data->assoc_info.freq);
2150                 wpa_supplicant_update_scan_results(wpa_s);
2151         }
2152
2153         wpa_s->assoc_freq = data->assoc_info.freq;
2154
2155         return 0;
2156 }
2157
2158
2159 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
2160 {
2161         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
2162
2163         if (!wpa_s->current_bss || !wpa_s->current_ssid)
2164                 return -1;
2165
2166         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
2167                 return 0;
2168
2169         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
2170                                         WPA_IE_VENDOR_TYPE);
2171         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
2172
2173         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
2174                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
2175             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
2176                                  bss_rsn ? 2 + bss_rsn[1] : 0))
2177                 return -1;
2178
2179         return 0;
2180 }
2181
2182
2183 static void wpas_fst_update_mb_assoc(struct wpa_supplicant *wpa_s,
2184                                      union wpa_event_data *data)
2185 {
2186 #ifdef CONFIG_FST
2187         struct assoc_info *ai = data ? &data->assoc_info : NULL;
2188         struct wpa_bss *bss = wpa_s->current_bss;
2189         const u8 *ieprb, *iebcn;
2190
2191         wpabuf_free(wpa_s->received_mb_ies);
2192         wpa_s->received_mb_ies = NULL;
2193
2194         if (ai &&
2195             !wpas_fst_update_mbie(wpa_s, ai->resp_ies, ai->resp_ies_len)) {
2196                 wpa_printf(MSG_DEBUG,
2197                            "FST: MB IEs updated from Association Response frame");
2198                 return;
2199         }
2200
2201         if (ai &&
2202             !wpas_fst_update_mbie(wpa_s, ai->beacon_ies, ai->beacon_ies_len)) {
2203                 wpa_printf(MSG_DEBUG,
2204                            "FST: MB IEs updated from association event Beacon IEs");
2205                 return;
2206         }
2207
2208         if (!bss)
2209                 return;
2210
2211         ieprb = (const u8 *) (bss + 1);
2212         iebcn = ieprb + bss->ie_len;
2213
2214         if (!wpas_fst_update_mbie(wpa_s, ieprb, bss->ie_len))
2215                 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss IE");
2216         else if (!wpas_fst_update_mbie(wpa_s, iebcn, bss->beacon_ie_len))
2217                 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss beacon IE");
2218 #endif /* CONFIG_FST */
2219 }
2220
2221
2222 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
2223                                        union wpa_event_data *data)
2224 {
2225         u8 bssid[ETH_ALEN];
2226         int ft_completed;
2227         int new_bss = 0;
2228
2229 #ifdef CONFIG_AP
2230         if (wpa_s->ap_iface) {
2231                 if (!data)
2232                         return;
2233                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
2234                                     data->assoc_info.addr,
2235                                     data->assoc_info.req_ies,
2236                                     data->assoc_info.req_ies_len,
2237                                     data->assoc_info.reassoc);
2238                 return;
2239         }
2240 #endif /* CONFIG_AP */
2241
2242         eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
2243
2244         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
2245         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
2246                 return;
2247
2248         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
2249                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
2250                 wpa_supplicant_deauthenticate(
2251                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2252                 return;
2253         }
2254
2255         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
2256         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
2257                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
2258                         MACSTR, MAC2STR(bssid));
2259                 new_bss = 1;
2260                 random_add_randomness(bssid, ETH_ALEN);
2261                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
2262                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2263                 wpas_notify_bssid_changed(wpa_s);
2264
2265                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
2266                         wpa_clear_keys(wpa_s, bssid);
2267                 }
2268                 if (wpa_supplicant_select_config(wpa_s) < 0) {
2269                         wpa_supplicant_deauthenticate(
2270                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2271                         return;
2272                 }
2273         }
2274
2275         if (wpa_s->conf->ap_scan == 1 &&
2276             wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
2277                 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0 && new_bss)
2278                         wpa_msg(wpa_s, MSG_WARNING,
2279                                 "WPA/RSN IEs not updated");
2280         }
2281
2282         wpas_fst_update_mb_assoc(wpa_s, data);
2283
2284 #ifdef CONFIG_SME
2285         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
2286         wpa_s->sme.prev_bssid_set = 1;
2287         wpa_s->sme.last_unprot_disconnect.sec = 0;
2288 #endif /* CONFIG_SME */
2289
2290         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
2291         if (wpa_s->current_ssid) {
2292                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
2293                  * initialized before association, but for other modes,
2294                  * initialize PC/SC here, if the current configuration needs
2295                  * smartcard or SIM/USIM. */
2296                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
2297         }
2298         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
2299         if (wpa_s->l2)
2300                 l2_packet_notify_auth_start(wpa_s->l2);
2301
2302         /*
2303          * Set portEnabled first to FALSE in order to get EAP state machine out
2304          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
2305          * state machine may transit to AUTHENTICATING state based on obsolete
2306          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
2307          * AUTHENTICATED without ever giving chance to EAP state machine to
2308          * reset the state.
2309          */
2310         if (!ft_completed) {
2311                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2312                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2313         }
2314         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
2315                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2316         /* 802.1X::portControl = Auto */
2317         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2318         wpa_s->eapol_received = 0;
2319         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2320             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2321             (wpa_s->current_ssid &&
2322              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2323                 if (wpa_s->current_ssid &&
2324                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2325                     (wpa_s->drv_flags &
2326                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2327                         /*
2328                          * Set the key after having received joined-IBSS event
2329                          * from the driver.
2330                          */
2331                         wpa_supplicant_set_wpa_none_key(wpa_s,
2332                                                         wpa_s->current_ssid);
2333                 }
2334                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2335                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2336         } else if (!ft_completed) {
2337                 /* Timeout for receiving the first EAPOL packet */
2338                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2339         }
2340         wpa_supplicant_cancel_scan(wpa_s);
2341
2342         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2343             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2344                 /*
2345                  * We are done; the driver will take care of RSN 4-way
2346                  * handshake.
2347                  */
2348                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2349                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2350                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2351                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2352         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2353                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2354                 /*
2355                  * The driver will take care of RSN 4-way handshake, so we need
2356                  * to allow EAPOL supplicant to complete its work without
2357                  * waiting for WPA supplicant.
2358                  */
2359                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2360         } else if (ft_completed) {
2361                 /*
2362                  * FT protocol completed - make sure EAPOL state machine ends
2363                  * up in authenticated.
2364                  */
2365                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2366                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2367                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2368                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2369         }
2370
2371         wpa_s->last_eapol_matches_bssid = 0;
2372
2373         if (wpa_s->pending_eapol_rx) {
2374                 struct os_reltime now, age;
2375                 os_get_reltime(&now);
2376                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2377                 if (age.sec == 0 && age.usec < 100000 &&
2378                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2379                     0) {
2380                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2381                                 "frame that was received just before "
2382                                 "association notification");
2383                         wpa_supplicant_rx_eapol(
2384                                 wpa_s, wpa_s->pending_eapol_rx_src,
2385                                 wpabuf_head(wpa_s->pending_eapol_rx),
2386                                 wpabuf_len(wpa_s->pending_eapol_rx));
2387                 }
2388                 wpabuf_free(wpa_s->pending_eapol_rx);
2389                 wpa_s->pending_eapol_rx = NULL;
2390         }
2391
2392         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2393              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2394             wpa_s->current_ssid &&
2395             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2396                 /* Set static WEP keys again */
2397                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2398         }
2399
2400 #ifdef CONFIG_IBSS_RSN
2401         if (wpa_s->current_ssid &&
2402             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2403             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2404             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2405             wpa_s->ibss_rsn == NULL) {
2406                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2407                 if (!wpa_s->ibss_rsn) {
2408                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2409                         wpa_supplicant_deauthenticate(
2410                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2411                         return;
2412                 }
2413
2414                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2415         }
2416 #endif /* CONFIG_IBSS_RSN */
2417
2418         wpas_wps_notify_assoc(wpa_s, bssid);
2419
2420         if (data) {
2421                 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2422                                     data->assoc_info.resp_ies_len,
2423                                     &data->assoc_info.wmm_params);
2424
2425                 if (wpa_s->reassoc_same_bss)
2426                         wmm_ac_restore_tspecs(wpa_s);
2427         }
2428 }
2429
2430
2431 static int disconnect_reason_recoverable(u16 reason_code)
2432 {
2433         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2434                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2435                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2436 }
2437
2438
2439 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2440                                           u16 reason_code,
2441                                           int locally_generated)
2442 {
2443         const u8 *bssid;
2444
2445         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2446                 /*
2447                  * At least Host AP driver and a Prism3 card seemed to be
2448                  * generating streams of disconnected events when configuring
2449                  * IBSS for WPA-None. Ignore them for now.
2450                  */
2451                 return;
2452         }
2453
2454         bssid = wpa_s->bssid;
2455         if (is_zero_ether_addr(bssid))
2456                 bssid = wpa_s->pending_bssid;
2457
2458         if (!is_zero_ether_addr(bssid) ||
2459             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2460                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2461                         " reason=%d%s",
2462                         MAC2STR(bssid), reason_code,
2463                         locally_generated ? " locally_generated=1" : "");
2464         }
2465 }
2466
2467
2468 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2469                                  int locally_generated)
2470 {
2471         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2472             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2473                 return 0; /* Not in 4-way handshake with PSK */
2474
2475         /*
2476          * It looks like connection was lost while trying to go through PSK
2477          * 4-way handshake. Filter out known disconnection cases that are caused
2478          * by something else than PSK mismatch to avoid confusing reports.
2479          */
2480
2481         if (locally_generated) {
2482                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2483                         return 0;
2484         }
2485
2486         return 1;
2487 }
2488
2489
2490 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2491                                                  u16 reason_code,
2492                                                  int locally_generated)
2493 {
2494         const u8 *bssid;
2495         int authenticating;
2496         u8 prev_pending_bssid[ETH_ALEN];
2497         struct wpa_bss *fast_reconnect = NULL;
2498         struct wpa_ssid *fast_reconnect_ssid = NULL;
2499         struct wpa_ssid *last_ssid;
2500
2501         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2502         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2503
2504         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2505                 /*
2506                  * At least Host AP driver and a Prism3 card seemed to be
2507                  * generating streams of disconnected events when configuring
2508                  * IBSS for WPA-None. Ignore them for now.
2509                  */
2510                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2511                         "IBSS/WPA-None mode");
2512                 return;
2513         }
2514
2515         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2516                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2517                         "pre-shared key may be incorrect");
2518                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2519                         return; /* P2P group removed */
2520                 wpas_auth_failed(wpa_s, "WRONG_KEY");
2521         }
2522         if (!wpa_s->disconnected &&
2523             (!wpa_s->auto_reconnect_disabled ||
2524              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2525              wpas_wps_searching(wpa_s) ||
2526              wpas_wps_reenable_networks_pending(wpa_s))) {
2527                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2528                         "reconnect (wps=%d/%d wpa_state=%d)",
2529                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2530                         wpas_wps_searching(wpa_s),
2531                         wpa_s->wpa_state);
2532                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2533                     wpa_s->current_ssid &&
2534                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2535                     !locally_generated &&
2536                     disconnect_reason_recoverable(reason_code)) {
2537                         /*
2538                          * It looks like the AP has dropped association with
2539                          * us, but could allow us to get back in. Try to
2540                          * reconnect to the same BSS without full scan to save
2541                          * time for some common cases.
2542                          */
2543                         fast_reconnect = wpa_s->current_bss;
2544                         fast_reconnect_ssid = wpa_s->current_ssid;
2545                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2546                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2547                 else
2548                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2549                                 "immediate scan");
2550         } else {
2551                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2552                         "try to re-connect");
2553                 wpa_s->reassociate = 0;
2554                 wpa_s->disconnected = 1;
2555                 if (!wpa_s->pno)
2556                         wpa_supplicant_cancel_sched_scan(wpa_s);
2557         }
2558         bssid = wpa_s->bssid;
2559         if (is_zero_ether_addr(bssid))
2560                 bssid = wpa_s->pending_bssid;
2561         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2562                 wpas_connection_failed(wpa_s, bssid);
2563         wpa_sm_notify_disassoc(wpa_s->wpa);
2564         if (locally_generated)
2565                 wpa_s->disconnect_reason = -reason_code;
2566         else
2567                 wpa_s->disconnect_reason = reason_code;
2568         wpas_notify_disconnect_reason(wpa_s);
2569         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2570                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2571                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2572         }
2573         last_ssid = wpa_s->current_ssid;
2574         wpa_supplicant_mark_disassoc(wpa_s);
2575
2576         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2577                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2578                 wpa_s->current_ssid = last_ssid;
2579         }
2580
2581         if (fast_reconnect &&
2582             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2583             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2584             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2585                              fast_reconnect->ssid_len) &&
2586             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid) &&
2587             !wpa_is_bss_tmp_disallowed(wpa_s, fast_reconnect->bssid)) {
2588 #ifndef CONFIG_NO_SCAN_PROCESSING
2589                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2590                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2591                                            fast_reconnect_ssid) < 0) {
2592                         /* Recover through full scan */
2593                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2594                 }
2595 #endif /* CONFIG_NO_SCAN_PROCESSING */
2596         } else if (fast_reconnect) {
2597                 /*
2598                  * Could not reconnect to the same BSS due to network being
2599                  * disabled. Use a new scan to match the alternative behavior
2600                  * above, i.e., to continue automatic reconnection attempt in a
2601                  * way that enforces disabled network rules.
2602                  */
2603                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2604         }
2605 }
2606
2607
2608 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2609 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2610 {
2611         struct wpa_supplicant *wpa_s = eloop_ctx;
2612
2613         if (!wpa_s->pending_mic_error_report)
2614                 return;
2615
2616         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2617         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2618         wpa_s->pending_mic_error_report = 0;
2619 }
2620 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2621
2622
2623 static void
2624 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2625                                          union wpa_event_data *data)
2626 {
2627         int pairwise;
2628         struct os_reltime t;
2629
2630         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2631         pairwise = (data && data->michael_mic_failure.unicast);
2632         os_get_reltime(&t);
2633         if ((wpa_s->last_michael_mic_error.sec &&
2634              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2635             wpa_s->pending_mic_error_report) {
2636                 if (wpa_s->pending_mic_error_report) {
2637                         /*
2638                          * Send the pending MIC error report immediately since
2639                          * we are going to start countermeasures and AP better
2640                          * do the same.
2641                          */
2642                         wpa_sm_key_request(wpa_s->wpa, 1,
2643                                            wpa_s->pending_mic_error_pairwise);
2644                 }
2645
2646                 /* Send the new MIC error report immediately since we are going
2647                  * to start countermeasures and AP better do the same.
2648                  */
2649                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2650
2651                 /* initialize countermeasures */
2652                 wpa_s->countermeasures = 1;
2653
2654                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2655
2656                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2657
2658                 /*
2659                  * Need to wait for completion of request frame. We do not get
2660                  * any callback for the message completion, so just wait a
2661                  * short while and hope for the best. */
2662                 os_sleep(0, 10000);
2663
2664                 wpa_drv_set_countermeasures(wpa_s, 1);
2665                 wpa_supplicant_deauthenticate(wpa_s,
2666                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2667                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2668                                      wpa_s, NULL);
2669                 eloop_register_timeout(60, 0,
2670                                        wpa_supplicant_stop_countermeasures,
2671                                        wpa_s, NULL);
2672                 /* TODO: mark the AP rejected for 60 second. STA is
2673                  * allowed to associate with another AP.. */
2674         } else {
2675 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2676                 if (wpa_s->mic_errors_seen) {
2677                         /*
2678                          * Reduce the effectiveness of Michael MIC error
2679                          * reports as a means for attacking against TKIP if
2680                          * more than one MIC failure is noticed with the same
2681                          * PTK. We delay the transmission of the reports by a
2682                          * random time between 0 and 60 seconds in order to
2683                          * force the attacker wait 60 seconds before getting
2684                          * the information on whether a frame resulted in a MIC
2685                          * failure.
2686                          */
2687                         u8 rval[4];
2688                         int sec;
2689
2690                         if (os_get_random(rval, sizeof(rval)) < 0)
2691                                 sec = os_random() % 60;
2692                         else
2693                                 sec = WPA_GET_BE32(rval) % 60;
2694                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2695                                 "report %d seconds", sec);
2696                         wpa_s->pending_mic_error_report = 1;
2697                         wpa_s->pending_mic_error_pairwise = pairwise;
2698                         eloop_cancel_timeout(
2699                                 wpa_supplicant_delayed_mic_error_report,
2700                                 wpa_s, NULL);
2701                         eloop_register_timeout(
2702                                 sec, os_random() % 1000000,
2703                                 wpa_supplicant_delayed_mic_error_report,
2704                                 wpa_s, NULL);
2705                 } else {
2706                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2707                 }
2708 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2709                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2710 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2711         }
2712         wpa_s->last_michael_mic_error = t;
2713         wpa_s->mic_errors_seen++;
2714 }
2715
2716
2717 #ifdef CONFIG_TERMINATE_ONLASTIF
2718 static int any_interfaces(struct wpa_supplicant *head)
2719 {
2720         struct wpa_supplicant *wpa_s;
2721
2722         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2723                 if (!wpa_s->interface_removed)
2724                         return 1;
2725         return 0;
2726 }
2727 #endif /* CONFIG_TERMINATE_ONLASTIF */
2728
2729
2730 static void
2731 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2732                                       union wpa_event_data *data)
2733 {
2734         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2735                 return;
2736
2737         switch (data->interface_status.ievent) {
2738         case EVENT_INTERFACE_ADDED:
2739                 if (!wpa_s->interface_removed)
2740                         break;
2741                 wpa_s->interface_removed = 0;
2742                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2743                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2744                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2745                                 "driver after interface was added");
2746                 }
2747
2748 #ifdef CONFIG_P2P
2749                 if (!wpa_s->global->p2p &&
2750                     !wpa_s->global->p2p_disabled &&
2751                     !wpa_s->conf->p2p_disabled &&
2752                     (wpa_s->drv_flags &
2753                      WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
2754                     wpas_p2p_add_p2pdev_interface(
2755                             wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) {
2756                         wpa_printf(MSG_INFO,
2757                                    "P2P: Failed to enable P2P Device interface");
2758                         /* Try to continue without. P2P will be disabled. */
2759                 }
2760 #endif /* CONFIG_P2P */
2761
2762                 break;
2763         case EVENT_INTERFACE_REMOVED:
2764                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2765                 wpa_s->interface_removed = 1;
2766                 wpa_supplicant_mark_disassoc(wpa_s);
2767                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2768                 l2_packet_deinit(wpa_s->l2);
2769                 wpa_s->l2 = NULL;
2770
2771 #ifdef CONFIG_P2P
2772                 if (wpa_s->global->p2p &&
2773                     wpa_s->global->p2p_init_wpa_s->parent == wpa_s &&
2774                     (wpa_s->drv_flags &
2775                      WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) {
2776                         wpa_dbg(wpa_s, MSG_DEBUG,
2777                                 "Removing P2P Device interface");
2778                         wpa_supplicant_remove_iface(
2779                                 wpa_s->global, wpa_s->global->p2p_init_wpa_s,
2780                                 0);
2781                         wpa_s->global->p2p_init_wpa_s = NULL;
2782                 }
2783 #endif /* CONFIG_P2P */
2784
2785 #ifdef CONFIG_MATCH_IFACE
2786                 if (wpa_s->matched) {
2787                         wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
2788                         break;
2789                 }
2790 #endif /* CONFIG_MATCH_IFACE */
2791
2792 #ifdef CONFIG_TERMINATE_ONLASTIF
2793                 /* check if last interface */
2794                 if (!any_interfaces(wpa_s->global->ifaces))
2795                         eloop_terminate();
2796 #endif /* CONFIG_TERMINATE_ONLASTIF */
2797                 break;
2798         }
2799 }
2800
2801
2802 #ifdef CONFIG_PEERKEY
2803 static void
2804 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2805                               union wpa_event_data *data)
2806 {
2807         if (data == NULL)
2808                 return;
2809         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2810 }
2811 #endif /* CONFIG_PEERKEY */
2812
2813
2814 #ifdef CONFIG_TDLS
2815 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2816                                       union wpa_event_data *data)
2817 {
2818         if (data == NULL)
2819                 return;
2820         switch (data->tdls.oper) {
2821         case TDLS_REQUEST_SETUP:
2822                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2823                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2824                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2825                 else
2826                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2827                 break;
2828         case TDLS_REQUEST_TEARDOWN:
2829                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2830                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2831                                                data->tdls.reason_code);
2832                 else
2833                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2834                                           data->tdls.peer);
2835                 break;
2836         case TDLS_REQUEST_DISCOVER:
2837                         wpa_tdls_send_discovery_request(wpa_s->wpa,
2838                                                         data->tdls.peer);
2839                 break;
2840         }
2841 }
2842 #endif /* CONFIG_TDLS */
2843
2844
2845 #ifdef CONFIG_WNM
2846 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2847                                      union wpa_event_data *data)
2848 {
2849         if (data == NULL)
2850                 return;
2851         switch (data->wnm.oper) {
2852         case WNM_OPER_SLEEP:
2853                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2854                            "(action=%d, intval=%d)",
2855                            data->wnm.sleep_action, data->wnm.sleep_intval);
2856                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2857                                              data->wnm.sleep_intval, NULL);
2858                 break;
2859         }
2860 }
2861 #endif /* CONFIG_WNM */
2862
2863
2864 #ifdef CONFIG_IEEE80211R
2865 static void
2866 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2867                                  union wpa_event_data *data)
2868 {
2869         if (data == NULL)
2870                 return;
2871
2872         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2873                                     data->ft_ies.ies_len,
2874                                     data->ft_ies.ft_action,
2875                                     data->ft_ies.target_ap,
2876                                     data->ft_ies.ric_ies,
2877                                     data->ft_ies.ric_ies_len) < 0) {
2878                 /* TODO: prevent MLME/driver from trying to associate? */
2879         }
2880 }
2881 #endif /* CONFIG_IEEE80211R */
2882
2883
2884 #ifdef CONFIG_IBSS_RSN
2885 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2886                                                 union wpa_event_data *data)
2887 {
2888         struct wpa_ssid *ssid;
2889         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2890                 return;
2891         if (data == NULL)
2892                 return;
2893         ssid = wpa_s->current_ssid;
2894         if (ssid == NULL)
2895                 return;
2896         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2897                 return;
2898
2899         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2900 }
2901
2902
2903 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2904                                            union wpa_event_data *data)
2905 {
2906         struct wpa_ssid *ssid = wpa_s->current_ssid;
2907
2908         if (ssid == NULL)
2909                 return;
2910
2911         /* check if the ssid is correctly configured as IBSS/RSN */
2912         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2913                 return;
2914
2915         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2916                              data->rx_mgmt.frame_len);
2917 }
2918 #endif /* CONFIG_IBSS_RSN */
2919
2920
2921 #ifdef CONFIG_IEEE80211R
2922 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2923                          size_t len)
2924 {
2925         const u8 *sta_addr, *target_ap_addr;
2926         u16 status;
2927
2928         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2929         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2930                 return; /* only SME case supported for now */
2931         if (len < 1 + 2 * ETH_ALEN + 2)
2932                 return;
2933         if (data[0] != 2)
2934                 return; /* Only FT Action Response is supported for now */
2935         sta_addr = data + 1;
2936         target_ap_addr = data + 1 + ETH_ALEN;
2937         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2938         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2939                 MACSTR " TargetAP " MACSTR " status %u",
2940                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2941
2942         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2943                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2944                         " in FT Action Response", MAC2STR(sta_addr));
2945                 return;
2946         }
2947
2948         if (status) {
2949                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2950                         "failure (status code %d)", status);
2951                 /* TODO: report error to FT code(?) */
2952                 return;
2953         }
2954
2955         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2956                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2957                                     target_ap_addr, NULL, 0) < 0)
2958                 return;
2959
2960 #ifdef CONFIG_SME
2961         {
2962                 struct wpa_bss *bss;
2963                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2964                 if (bss)
2965                         wpa_s->sme.freq = bss->freq;
2966                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2967                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2968                               WLAN_AUTH_FT);
2969         }
2970 #endif /* CONFIG_SME */
2971 }
2972 #endif /* CONFIG_IEEE80211R */
2973
2974
2975 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2976                                                struct unprot_deauth *e)
2977 {
2978 #ifdef CONFIG_IEEE80211W
2979         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2980                    "dropped: " MACSTR " -> " MACSTR
2981                    " (reason code %u)",
2982                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2983         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2984 #endif /* CONFIG_IEEE80211W */
2985 }
2986
2987
2988 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2989                                                  struct unprot_disassoc *e)
2990 {
2991 #ifdef CONFIG_IEEE80211W
2992         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2993                    "dropped: " MACSTR " -> " MACSTR
2994                    " (reason code %u)",
2995                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2996         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2997 #endif /* CONFIG_IEEE80211W */
2998 }
2999
3000
3001 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
3002                                   u16 reason_code, int locally_generated,
3003                                   const u8 *ie, size_t ie_len, int deauth)
3004 {
3005 #ifdef CONFIG_AP
3006         if (wpa_s->ap_iface && addr) {
3007                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
3008                 return;
3009         }
3010
3011         if (wpa_s->ap_iface) {
3012                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
3013                 return;
3014         }
3015 #endif /* CONFIG_AP */
3016
3017         if (!locally_generated)
3018                 wpa_s->own_disconnect_req = 0;
3019
3020         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
3021
3022         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
3023               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
3024                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
3025                eapol_sm_failed(wpa_s->eapol))) &&
3026              !wpa_s->eap_expected_failure))
3027                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
3028
3029 #ifdef CONFIG_P2P
3030         if (deauth && reason_code > 0) {
3031                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
3032                                           locally_generated) > 0) {
3033                         /*
3034                          * The interface was removed, so cannot continue
3035                          * processing any additional operations after this.
3036                          */
3037                         return;
3038                 }
3039         }
3040 #endif /* CONFIG_P2P */
3041
3042         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
3043                                              locally_generated);
3044 }
3045
3046
3047 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
3048                                 struct disassoc_info *info)
3049 {
3050         u16 reason_code = 0;
3051         int locally_generated = 0;
3052         const u8 *addr = NULL;
3053         const u8 *ie = NULL;
3054         size_t ie_len = 0;
3055
3056         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
3057
3058         if (info) {
3059                 addr = info->addr;
3060                 ie = info->ie;
3061                 ie_len = info->ie_len;
3062                 reason_code = info->reason_code;
3063                 locally_generated = info->locally_generated;
3064                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
3065                         locally_generated ? " (locally generated)" : "");
3066                 if (addr)
3067                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
3068                                 MAC2STR(addr));
3069                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
3070                             ie, ie_len);
3071         }
3072
3073 #ifdef CONFIG_AP
3074         if (wpa_s->ap_iface && info && info->addr) {
3075                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
3076                 return;
3077         }
3078
3079         if (wpa_s->ap_iface) {
3080                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
3081                 return;
3082         }
3083 #endif /* CONFIG_AP */
3084
3085 #ifdef CONFIG_P2P
3086         if (info) {
3087                 wpas_p2p_disassoc_notif(
3088                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
3089                         locally_generated);
3090         }
3091 #endif /* CONFIG_P2P */
3092
3093         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3094                 sme_event_disassoc(wpa_s, info);
3095
3096         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
3097                               ie, ie_len, 0);
3098 }
3099
3100
3101 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
3102                               struct deauth_info *info)
3103 {
3104         u16 reason_code = 0;
3105         int locally_generated = 0;
3106         const u8 *addr = NULL;
3107         const u8 *ie = NULL;
3108         size_t ie_len = 0;
3109
3110         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
3111
3112         if (info) {
3113                 addr = info->addr;
3114                 ie = info->ie;
3115                 ie_len = info->ie_len;
3116                 reason_code = info->reason_code;
3117                 locally_generated = info->locally_generated;
3118                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
3119                         reason_code,
3120                         locally_generated ? " (locally generated)" : "");
3121                 if (addr) {
3122                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
3123                                 MAC2STR(addr));
3124                 }
3125                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
3126                             ie, ie_len);
3127         }
3128
3129         wpa_reset_ft_completed(wpa_s->wpa);
3130
3131         wpas_event_disconnect(wpa_s, addr, reason_code,
3132                               locally_generated, ie, ie_len, 1);
3133 }
3134
3135
3136 static const char * reg_init_str(enum reg_change_initiator init)
3137 {
3138         switch (init) {
3139         case REGDOM_SET_BY_CORE:
3140                 return "CORE";
3141         case REGDOM_SET_BY_USER:
3142                 return "USER";
3143         case REGDOM_SET_BY_DRIVER:
3144                 return "DRIVER";
3145         case REGDOM_SET_BY_COUNTRY_IE:
3146                 return "COUNTRY_IE";
3147         case REGDOM_BEACON_HINT:
3148                 return "BEACON_HINT";
3149         }
3150         return "?";
3151 }
3152
3153
3154 static const char * reg_type_str(enum reg_type type)
3155 {
3156         switch (type) {
3157         case REGDOM_TYPE_UNKNOWN:
3158                 return "UNKNOWN";
3159         case REGDOM_TYPE_COUNTRY:
3160                 return "COUNTRY";
3161         case REGDOM_TYPE_WORLD:
3162                 return "WORLD";
3163         case REGDOM_TYPE_CUSTOM_WORLD:
3164                 return "CUSTOM_WORLD";
3165         case REGDOM_TYPE_INTERSECTION:
3166                 return "INTERSECTION";
3167         }
3168         return "?";
3169 }
3170
3171
3172 static void wpa_supplicant_update_channel_list(
3173         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
3174 {
3175         struct wpa_supplicant *ifs;
3176
3177         /*
3178          * To allow backwards compatibility with higher level layers that
3179          * assumed the REGDOM_CHANGE event is sent over the initially added
3180          * interface. Find the highest parent of this interface and use it to
3181          * send the event.
3182          */
3183         for (ifs = wpa_s; ifs->parent && ifs != ifs->parent; ifs = ifs->parent)
3184                 ;
3185
3186         wpa_msg(ifs, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
3187                 reg_init_str(info->initiator), reg_type_str(info->type),
3188                 info->alpha2[0] ? " alpha2=" : "",
3189                 info->alpha2[0] ? info->alpha2 : "");
3190
3191         if (wpa_s->drv_priv == NULL)
3192                 return; /* Ignore event during drv initialization */
3193
3194         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
3195                          radio_list) {
3196                 wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
3197                            ifs->ifname);
3198                 free_hw_features(ifs);
3199                 ifs->hw.modes = wpa_drv_get_hw_feature_data(
3200                         ifs, &ifs->hw.num_modes, &ifs->hw.flags);
3201         }
3202
3203         /* Restart sched_scan with updated channel list */
3204         if (wpa_s->sched_scanning) {
3205                 wpa_dbg(wpa_s, MSG_DEBUG,
3206                         "Channel list changed restart sched scan.");
3207                 wpa_supplicant_cancel_sched_scan(wpa_s);
3208                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3209         }
3210
3211         wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_DRIVER);
3212 }
3213
3214
3215 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
3216                                       const u8 *frame, size_t len, int freq,
3217                                       int rssi)
3218 {
3219         const struct ieee80211_mgmt *mgmt;
3220         const u8 *payload;
3221         size_t plen;
3222         u8 category;
3223
3224         if (len < IEEE80211_HDRLEN + 2)
3225                 return;
3226
3227         mgmt = (const struct ieee80211_mgmt *) frame;
3228         payload = frame + IEEE80211_HDRLEN;
3229         category = *payload++;
3230         plen = len - IEEE80211_HDRLEN - 1;
3231
3232         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
3233                 " Category=%u DataLen=%d freq=%d MHz",
3234                 MAC2STR(mgmt->sa), category, (int) plen, freq);
3235
3236         if (category == WLAN_ACTION_WMM) {
3237                 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
3238                 return;
3239         }
3240
3241 #ifdef CONFIG_IEEE80211R
3242         if (category == WLAN_ACTION_FT) {
3243                 ft_rx_action(wpa_s, payload, plen);
3244                 return;
3245         }
3246 #endif /* CONFIG_IEEE80211R */
3247
3248 #ifdef CONFIG_IEEE80211W
3249 #ifdef CONFIG_SME
3250         if (category == WLAN_ACTION_SA_QUERY) {
3251                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
3252                 return;
3253         }
3254 #endif /* CONFIG_SME */
3255 #endif /* CONFIG_IEEE80211W */
3256
3257 #ifdef CONFIG_WNM
3258         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
3259                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
3260                 return;
3261         }
3262 #endif /* CONFIG_WNM */
3263
3264 #ifdef CONFIG_GAS
3265         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
3266              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
3267             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
3268                          mgmt->u.action.category,
3269                          payload, plen, freq) == 0)
3270                 return;
3271 #endif /* CONFIG_GAS */
3272
3273 #ifdef CONFIG_TDLS
3274         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
3275             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
3276                 wpa_dbg(wpa_s, MSG_DEBUG,
3277                         "TDLS: Received Discovery Response from " MACSTR,
3278                         MAC2STR(mgmt->sa));
3279                 return;
3280         }
3281 #endif /* CONFIG_TDLS */
3282
3283 #ifdef CONFIG_INTERWORKING
3284         if (category == WLAN_ACTION_QOS && plen >= 1 &&
3285             payload[0] == QOS_QOS_MAP_CONFIG) {
3286                 const u8 *pos = payload + 1;
3287                 size_t qlen = plen - 1;
3288                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
3289                         MACSTR, MAC2STR(mgmt->sa));
3290                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
3291                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
3292                     pos[1] <= qlen - 2 && pos[1] >= 16)
3293                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
3294                 return;
3295         }
3296 #endif /* CONFIG_INTERWORKING */
3297
3298         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3299             payload[0] == WLAN_RRM_RADIO_MEASUREMENT_REQUEST) {
3300                 wpas_rrm_handle_radio_measurement_request(wpa_s, mgmt->sa,
3301                                                           payload + 1,
3302                                                           plen - 1);
3303                 return;
3304         }
3305
3306         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3307             payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
3308                 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
3309                 return;
3310         }
3311
3312         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3313             payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
3314                 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
3315                                                          payload + 1, plen - 1,
3316                                                          rssi);
3317                 return;
3318         }
3319
3320 #ifdef CONFIG_FST
3321         if (mgmt->u.action.category == WLAN_ACTION_FST && wpa_s->fst) {
3322                 fst_rx_action(wpa_s->fst, mgmt, len);
3323                 return;
3324         }
3325 #endif /* CONFIG_FST */
3326
3327         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
3328                            category, payload, plen, freq);
3329         if (wpa_s->ifmsh)
3330                 mesh_mpm_action_rx(wpa_s, mgmt, len);
3331 }
3332
3333
3334 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
3335                                              union wpa_event_data *event)
3336 {
3337         struct wpa_freq_range_list *list;
3338         char *str = NULL;
3339
3340         list = &event->freq_range;
3341
3342         if (list->num)
3343                 str = freq_range_list_str(list);
3344         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
3345                 str ? str : "");
3346
3347 #ifdef CONFIG_P2P
3348         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
3349                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
3350                         __func__);
3351         } else {
3352                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
3353
3354                 /*
3355                  * The update channel flow will also take care of moving a GO
3356                  * from the unsafe frequency if needed.
3357                  */
3358                 wpas_p2p_update_channel_list(wpa_s,
3359                                              WPAS_P2P_CHANNEL_UPDATE_AVOID);
3360         }
3361 #endif /* CONFIG_P2P */
3362
3363         os_free(str);
3364 }
3365
3366
3367 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3368                                             union wpa_event_data *data)
3369 {
3370         wpa_dbg(wpa_s, MSG_DEBUG,
3371                 "Connection authorized by device, previous state %d",
3372                 wpa_s->wpa_state);
3373         if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3374                 wpa_supplicant_cancel_auth_timeout(wpa_s);
3375                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3376                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3377                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3378         }
3379         wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3380         wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3381                                data->assoc_info.ptk_kck_len,
3382                                data->assoc_info.ptk_kek,
3383                                data->assoc_info.ptk_kek_len);
3384 }
3385
3386
3387 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3388                           union wpa_event_data *data)
3389 {
3390         struct wpa_supplicant *wpa_s = ctx;
3391         int resched;
3392
3393         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3394             event != EVENT_INTERFACE_ENABLED &&
3395             event != EVENT_INTERFACE_STATUS &&
3396             event != EVENT_SCAN_RESULTS &&
3397             event != EVENT_SCHED_SCAN_STOPPED) {
3398                 wpa_dbg(wpa_s, MSG_DEBUG,
3399                         "Ignore event %s (%d) while interface is disabled",
3400                         event_to_string(event), event);
3401                 return;
3402         }
3403
3404 #ifndef CONFIG_NO_STDOUT_DEBUG
3405 {
3406         int level = MSG_DEBUG;
3407
3408         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3409                 const struct ieee80211_hdr *hdr;
3410                 u16 fc;
3411                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3412                 fc = le_to_host16(hdr->frame_control);
3413                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3414                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3415                         level = MSG_EXCESSIVE;
3416         }
3417
3418         wpa_dbg(wpa_s, level, "Event %s (%d) received",
3419                 event_to_string(event), event);
3420 }
3421 #endif /* CONFIG_NO_STDOUT_DEBUG */
3422
3423         switch (event) {
3424         case EVENT_AUTH:
3425 #ifdef CONFIG_FST
3426                 if (!wpas_fst_update_mbie(wpa_s, data->auth.ies,
3427                                           data->auth.ies_len))
3428                         wpa_printf(MSG_DEBUG,
3429                                    "FST: MB IEs updated from auth IE");
3430 #endif /* CONFIG_FST */
3431                 sme_event_auth(wpa_s, data);
3432                 break;
3433         case EVENT_ASSOC:
3434                 wpa_supplicant_event_assoc(wpa_s, data);
3435                 if (data && data->assoc_info.authorized)
3436                         wpa_supplicant_event_assoc_auth(wpa_s, data);
3437                 if (data) {
3438                         wpa_msg(wpa_s, MSG_INFO,
3439                                 WPA_EVENT_SUBNET_STATUS_UPDATE "status=%u",
3440                                 data->assoc_info.subnet_status);
3441                 }
3442                 break;
3443         case EVENT_DISASSOC:
3444                 wpas_event_disassoc(wpa_s,
3445                                     data ? &data->disassoc_info : NULL);
3446                 break;
3447         case EVENT_DEAUTH:
3448                 wpas_event_deauth(wpa_s,
3449                                   data ? &data->deauth_info : NULL);
3450                 break;
3451         case EVENT_MICHAEL_MIC_FAILURE:
3452                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3453                 break;
3454 #ifndef CONFIG_NO_SCAN_PROCESSING
3455         case EVENT_SCAN_STARTED:
3456                 if (wpa_s->own_scan_requested ||
3457                     (data && !data->scan_info.external_scan)) {
3458                         struct os_reltime diff;
3459
3460                         os_get_reltime(&wpa_s->scan_start_time);
3461                         os_reltime_sub(&wpa_s->scan_start_time,
3462                                        &wpa_s->scan_trigger_time, &diff);
3463                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3464                                 diff.sec, diff.usec);
3465                         wpa_s->own_scan_requested = 0;
3466                         wpa_s->own_scan_running = 1;
3467                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3468                             wpa_s->manual_scan_use_id) {
3469                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3470                                              WPA_EVENT_SCAN_STARTED "id=%u",
3471                                              wpa_s->manual_scan_id);
3472                         } else {
3473                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3474                                              WPA_EVENT_SCAN_STARTED);
3475                         }
3476                 } else {
3477                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3478                         wpa_s->radio->external_scan_running = 1;
3479                         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3480                 }
3481                 break;
3482         case EVENT_SCAN_RESULTS:
3483                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3484                         wpa_s->scan_res_handler = NULL;
3485                         wpa_s->own_scan_running = 0;
3486                         wpa_s->radio->external_scan_running = 0;
3487                         wpa_s->last_scan_req = NORMAL_SCAN_REQ;
3488                         break;
3489                 }
3490
3491                 if (!(data && data->scan_info.external_scan) &&
3492                     os_reltime_initialized(&wpa_s->scan_start_time)) {
3493                         struct os_reltime now, diff;
3494                         os_get_reltime(&now);
3495                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3496                         wpa_s->scan_start_time.sec = 0;
3497                         wpa_s->scan_start_time.usec = 0;
3498                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3499                                 diff.sec, diff.usec);
3500                 }
3501                 if (wpa_supplicant_event_scan_results(wpa_s, data))
3502                         break; /* interface may have been removed */
3503                 if (!(data && data->scan_info.external_scan))
3504                         wpa_s->own_scan_running = 0;
3505                 if (data && data->scan_info.nl_scan_event)
3506                         wpa_s->radio->external_scan_running = 0;
3507                 radio_work_check_next(wpa_s);
3508                 break;
3509 #endif /* CONFIG_NO_SCAN_PROCESSING */
3510         case EVENT_ASSOCINFO:
3511                 wpa_supplicant_event_associnfo(wpa_s, data);
3512                 break;
3513         case EVENT_INTERFACE_STATUS:
3514                 wpa_supplicant_event_interface_status(wpa_s, data);
3515                 break;
3516         case EVENT_PMKID_CANDIDATE:
3517                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3518                 break;
3519 #ifdef CONFIG_PEERKEY
3520         case EVENT_STKSTART:
3521                 wpa_supplicant_event_stkstart(wpa_s, data);
3522                 break;
3523 #endif /* CONFIG_PEERKEY */
3524 #ifdef CONFIG_TDLS
3525         case EVENT_TDLS:
3526                 wpa_supplicant_event_tdls(wpa_s, data);
3527                 break;
3528 #endif /* CONFIG_TDLS */
3529 #ifdef CONFIG_WNM
3530         case EVENT_WNM:
3531                 wpa_supplicant_event_wnm(wpa_s, data);
3532                 break;
3533 #endif /* CONFIG_WNM */
3534 #ifdef CONFIG_IEEE80211R
3535         case EVENT_FT_RESPONSE:
3536                 wpa_supplicant_event_ft_response(wpa_s, data);
3537                 break;
3538 #endif /* CONFIG_IEEE80211R */
3539 #ifdef CONFIG_IBSS_RSN
3540         case EVENT_IBSS_RSN_START:
3541                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3542                 break;
3543 #endif /* CONFIG_IBSS_RSN */
3544         case EVENT_ASSOC_REJECT:
3545                 if (data->assoc_reject.bssid)
3546                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3547                                 "bssid=" MACSTR " status_code=%u%s",
3548                                 MAC2STR(data->assoc_reject.bssid),
3549                                 data->assoc_reject.status_code,
3550                                 data->assoc_reject.timed_out ? " timeout" : "");
3551                 else
3552                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3553                                 "status_code=%u%s",
3554                                 data->assoc_reject.status_code,
3555                                 data->assoc_reject.timed_out ? " timeout" : "");
3556                 wpa_s->assoc_status_code = data->assoc_reject.status_code;
3557                 wpas_notify_assoc_status_code(wpa_s);
3558                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3559                         sme_event_assoc_reject(wpa_s, data);
3560                 else {
3561                         const u8 *bssid = data->assoc_reject.bssid;
3562                         if (bssid == NULL || is_zero_ether_addr(bssid))
3563                                 bssid = wpa_s->pending_bssid;
3564                         wpas_connection_failed(wpa_s, bssid);
3565                         wpa_supplicant_mark_disassoc(wpa_s);
3566                 }
3567                 break;
3568         case EVENT_AUTH_TIMED_OUT:
3569                 /* It is possible to get this event from earlier connection */
3570                 if (wpa_s->current_ssid &&
3571                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3572                         wpa_dbg(wpa_s, MSG_DEBUG,
3573                                 "Ignore AUTH_TIMED_OUT in mesh configuration");
3574                         break;
3575                 }
3576                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3577                         sme_event_auth_timed_out(wpa_s, data);
3578                 break;
3579         case EVENT_ASSOC_TIMED_OUT:
3580                 /* It is possible to get this event from earlier connection */
3581                 if (wpa_s->current_ssid &&
3582                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3583                         wpa_dbg(wpa_s, MSG_DEBUG,
3584                                 "Ignore ASSOC_TIMED_OUT in mesh configuration");
3585                         break;
3586                 }
3587                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3588                         sme_event_assoc_timed_out(wpa_s, data);
3589                 break;
3590         case EVENT_TX_STATUS:
3591                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3592                         " type=%d stype=%d",
3593                         MAC2STR(data->tx_status.dst),
3594                         data->tx_status.type, data->tx_status.stype);
3595 #ifdef CONFIG_AP
3596                 if (wpa_s->ap_iface == NULL) {
3597 #ifdef CONFIG_OFFCHANNEL
3598                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3599                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3600                                 offchannel_send_action_tx_status(
3601                                         wpa_s, data->tx_status.dst,
3602                                         data->tx_status.data,
3603                                         data->tx_status.data_len,
3604                                         data->tx_status.ack ?
3605                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3606                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3607 #endif /* CONFIG_OFFCHANNEL */
3608                         break;
3609                 }
3610 #endif /* CONFIG_AP */
3611 #ifdef CONFIG_OFFCHANNEL
3612                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3613                         MACSTR, MAC2STR(wpa_s->p2pdev->pending_action_dst));
3614                 /*
3615                  * Catch TX status events for Action frames we sent via group
3616                  * interface in GO mode, or via standalone AP interface.
3617                  * Note, wpa_s->p2pdev will be the same as wpa_s->parent,
3618                  * except when the primary interface is used as a GO interface
3619                  * (for drivers which do not have group interface concurrency)
3620                  */
3621                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3622                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3623                     os_memcmp(wpa_s->p2pdev->pending_action_dst,
3624                               data->tx_status.dst, ETH_ALEN) == 0) {
3625                         offchannel_send_action_tx_status(
3626                                 wpa_s->p2pdev, data->tx_status.dst,
3627                                 data->tx_status.data,
3628                                 data->tx_status.data_len,
3629                                 data->tx_status.ack ?
3630                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3631                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3632                         break;
3633                 }
3634 #endif /* CONFIG_OFFCHANNEL */
3635 #ifdef CONFIG_AP
3636                 switch (data->tx_status.type) {
3637                 case WLAN_FC_TYPE_MGMT:
3638                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3639                                       data->tx_status.data_len,
3640                                       data->tx_status.stype,
3641                                       data->tx_status.ack);
3642                         break;
3643                 case WLAN_FC_TYPE_DATA:
3644                         ap_tx_status(wpa_s, data->tx_status.dst,
3645                                      data->tx_status.data,
3646                                      data->tx_status.data_len,
3647                                      data->tx_status.ack);
3648                         break;
3649                 }
3650 #endif /* CONFIG_AP */
3651                 break;
3652 #ifdef CONFIG_AP
3653         case EVENT_EAPOL_TX_STATUS:
3654                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3655                                    data->eapol_tx_status.data,
3656                                    data->eapol_tx_status.data_len,
3657                                    data->eapol_tx_status.ack);
3658                 break;
3659         case EVENT_DRIVER_CLIENT_POLL_OK:
3660                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3661                 break;
3662         case EVENT_RX_FROM_UNKNOWN:
3663                 if (wpa_s->ap_iface == NULL)
3664                         break;
3665                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3666                                        data->rx_from_unknown.wds);
3667                 break;
3668         case EVENT_CH_SWITCH:
3669                 if (!data || !wpa_s->current_ssid)
3670                         break;
3671
3672                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CHANNEL_SWITCH
3673                         "freq=%d ht_enabled=%d ch_offset=%d ch_width=%s cf1=%d cf2=%d",
3674                         data->ch_switch.freq,
3675                         data->ch_switch.ht_enabled,
3676                         data->ch_switch.ch_offset,
3677                         channel_width_to_string(data->ch_switch.ch_width),
3678                         data->ch_switch.cf1,
3679                         data->ch_switch.cf2);
3680
3681                 wpa_s->assoc_freq = data->ch_switch.freq;
3682                 wpa_s->current_ssid->frequency = data->ch_switch.freq;
3683
3684                 if (wpa_s->current_ssid->mode == WPAS_MODE_AP ||
3685                     wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO ||
3686                     wpa_s->current_ssid->mode ==
3687                     WPAS_MODE_P2P_GROUP_FORMATION) {
3688                         wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3689                                           data->ch_switch.ht_enabled,
3690                                           data->ch_switch.ch_offset,
3691                                           data->ch_switch.ch_width,
3692                                           data->ch_switch.cf1,
3693                                           data->ch_switch.cf2);
3694                 }
3695
3696                 wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_CS);
3697                 break;
3698 #ifdef NEED_AP_MLME
3699         case EVENT_DFS_RADAR_DETECTED:
3700                 if (data)
3701                         wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event);
3702                 break;
3703         case EVENT_DFS_CAC_STARTED:
3704                 if (data)
3705                         wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
3706                 break;
3707         case EVENT_DFS_CAC_FINISHED:
3708                 if (data)
3709                         wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
3710                 break;
3711         case EVENT_DFS_CAC_ABORTED:
3712                 if (data)
3713                         wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
3714                 break;
3715         case EVENT_DFS_NOP_FINISHED:
3716                 if (data)
3717                         wpas_event_dfs_cac_nop_finished(wpa_s,
3718                                                         &data->dfs_event);
3719                 break;
3720 #endif /* NEED_AP_MLME */
3721 #endif /* CONFIG_AP */
3722         case EVENT_RX_MGMT: {
3723                 u16 fc, stype;
3724                 const struct ieee80211_mgmt *mgmt;
3725
3726 #ifdef CONFIG_TESTING_OPTIONS
3727                 if (wpa_s->ext_mgmt_frame_handling) {
3728                         struct rx_mgmt *rx = &data->rx_mgmt;
3729                         size_t hex_len = 2 * rx->frame_len + 1;
3730                         char *hex = os_malloc(hex_len);
3731                         if (hex) {
3732                                 wpa_snprintf_hex(hex, hex_len,
3733                                                  rx->frame, rx->frame_len);
3734                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3735                                         rx->freq, rx->datarate, rx->ssi_signal,
3736                                         hex);
3737                                 os_free(hex);
3738                         }
3739                         break;
3740                 }
3741 #endif /* CONFIG_TESTING_OPTIONS */
3742
3743                 mgmt = (const struct ieee80211_mgmt *)
3744                         data->rx_mgmt.frame;
3745                 fc = le_to_host16(mgmt->frame_control);
3746                 stype = WLAN_FC_GET_STYPE(fc);
3747
3748 #ifdef CONFIG_AP
3749                 if (wpa_s->ap_iface == NULL) {
3750 #endif /* CONFIG_AP */
3751 #ifdef CONFIG_P2P
3752                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3753                             data->rx_mgmt.frame_len > IEEE80211_HDRLEN) {
3754                                 const u8 *src = mgmt->sa;
3755                                 const u8 *ie;
3756                                 size_t ie_len;
3757
3758                                 ie = data->rx_mgmt.frame + IEEE80211_HDRLEN;
3759                                 ie_len = data->rx_mgmt.frame_len -
3760                                         IEEE80211_HDRLEN;
3761                                 wpas_p2p_probe_req_rx(
3762                                         wpa_s, src, mgmt->da,
3763                                         mgmt->bssid, ie, ie_len,
3764                                         data->rx_mgmt.freq,
3765                                         data->rx_mgmt.ssi_signal);
3766                                 break;
3767                         }
3768 #endif /* CONFIG_P2P */
3769 #ifdef CONFIG_IBSS_RSN
3770                         if (wpa_s->current_ssid &&
3771                             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3772                             stype == WLAN_FC_STYPE_AUTH &&
3773                             data->rx_mgmt.frame_len >= 30) {
3774                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3775                                 break;
3776                         }
3777 #endif /* CONFIG_IBSS_RSN */
3778
3779                         if (stype == WLAN_FC_STYPE_ACTION) {
3780                                 wpas_event_rx_mgmt_action(
3781                                         wpa_s, data->rx_mgmt.frame,
3782                                         data->rx_mgmt.frame_len,
3783                                         data->rx_mgmt.freq,
3784                                         data->rx_mgmt.ssi_signal);
3785                                 break;
3786                         }
3787
3788                         if (wpa_s->ifmsh) {
3789                                 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3790                                 break;
3791                         }
3792
3793                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3794                                 "management frame in non-AP mode");
3795                         break;
3796 #ifdef CONFIG_AP
3797                 }
3798
3799                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3800                     data->rx_mgmt.frame_len > IEEE80211_HDRLEN) {
3801                         const u8 *ie;
3802                         size_t ie_len;
3803
3804                         ie = data->rx_mgmt.frame + IEEE80211_HDRLEN;
3805                         ie_len = data->rx_mgmt.frame_len - IEEE80211_HDRLEN;
3806
3807                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3808                                          mgmt->bssid, ie, ie_len,
3809                                          data->rx_mgmt.ssi_signal);
3810                 }
3811
3812                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3813 #endif /* CONFIG_AP */
3814                 break;
3815                 }
3816         case EVENT_RX_PROBE_REQ:
3817                 if (data->rx_probe_req.sa == NULL ||
3818                     data->rx_probe_req.ie == NULL)
3819                         break;
3820 #ifdef CONFIG_AP
3821                 if (wpa_s->ap_iface) {
3822                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3823                                              data->rx_probe_req.sa,
3824                                              data->rx_probe_req.da,
3825                                              data->rx_probe_req.bssid,
3826                                              data->rx_probe_req.ie,
3827                                              data->rx_probe_req.ie_len,
3828                                              data->rx_probe_req.ssi_signal);
3829                         break;
3830                 }
3831 #endif /* CONFIG_AP */
3832                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3833                                       data->rx_probe_req.da,
3834                                       data->rx_probe_req.bssid,
3835                                       data->rx_probe_req.ie,
3836                                       data->rx_probe_req.ie_len,
3837                                       0,
3838                                       data->rx_probe_req.ssi_signal);
3839                 break;
3840         case EVENT_REMAIN_ON_CHANNEL:
3841 #ifdef CONFIG_OFFCHANNEL
3842                 offchannel_remain_on_channel_cb(
3843                         wpa_s, data->remain_on_channel.freq,
3844                         data->remain_on_channel.duration);
3845 #endif /* CONFIG_OFFCHANNEL */
3846                 wpas_p2p_remain_on_channel_cb(
3847                         wpa_s, data->remain_on_channel.freq,
3848                         data->remain_on_channel.duration);
3849                 break;
3850         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3851 #ifdef CONFIG_OFFCHANNEL
3852                 offchannel_cancel_remain_on_channel_cb(
3853                         wpa_s, data->remain_on_channel.freq);
3854 #endif /* CONFIG_OFFCHANNEL */
3855                 wpas_p2p_cancel_remain_on_channel_cb(
3856                         wpa_s, data->remain_on_channel.freq);
3857                 break;
3858         case EVENT_EAPOL_RX:
3859                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3860                                         data->eapol_rx.data,
3861                                         data->eapol_rx.data_len);
3862                 break;
3863         case EVENT_SIGNAL_CHANGE:
3864                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3865                         "above=%d signal=%d noise=%d txrate=%d",
3866                         data->signal_change.above_threshold,
3867                         data->signal_change.current_signal,
3868                         data->signal_change.current_noise,
3869                         data->signal_change.current_txrate);
3870                 wpa_bss_update_level(wpa_s->current_bss,
3871                                      data->signal_change.current_signal);
3872                 bgscan_notify_signal_change(
3873                         wpa_s, data->signal_change.above_threshold,
3874                         data->signal_change.current_signal,
3875                         data->signal_change.current_noise,
3876                         data->signal_change.current_txrate);
3877                 break;
3878         case EVENT_INTERFACE_ENABLED:
3879                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3880                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3881                         wpa_supplicant_update_mac_addr(wpa_s);
3882                         if (wpa_s->p2p_mgmt) {
3883                                 wpa_supplicant_set_state(wpa_s,
3884                                                          WPA_DISCONNECTED);
3885                                 break;
3886                         }
3887
3888 #ifdef CONFIG_AP
3889                         if (!wpa_s->ap_iface) {
3890                                 wpa_supplicant_set_state(wpa_s,
3891                                                          WPA_DISCONNECTED);
3892                                 wpa_s->scan_req = NORMAL_SCAN_REQ;
3893                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3894                         } else
3895                                 wpa_supplicant_set_state(wpa_s,
3896                                                          WPA_COMPLETED);
3897 #else /* CONFIG_AP */
3898                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3899                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3900 #endif /* CONFIG_AP */
3901                 }
3902                 break;
3903         case EVENT_INTERFACE_DISABLED:
3904                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3905 #ifdef CONFIG_P2P
3906                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3907                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3908                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3909                         /*
3910                          * Mark interface disabled if this happens to end up not
3911                          * being removed as a separate P2P group interface.
3912                          */
3913                         wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3914                         /*
3915                          * The interface was externally disabled. Remove
3916                          * it assuming an external entity will start a
3917                          * new session if needed.
3918                          */
3919                         if (wpa_s->current_ssid &&
3920                             wpa_s->current_ssid->p2p_group)
3921                                 wpas_p2p_interface_unavailable(wpa_s);
3922                         else
3923                                 wpas_p2p_disconnect(wpa_s);
3924                         /*
3925                          * wpa_s instance may have been freed, so must not use
3926                          * it here anymore.
3927                          */
3928                         break;
3929                 }
3930                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3931                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3932                         /* This radio work will be cancelled, so clear P2P
3933                          * state as well.
3934                          */
3935                         p2p_stop_find(wpa_s->global->p2p);
3936                 }
3937 #endif /* CONFIG_P2P */
3938
3939                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3940                         /*
3941                          * Indicate disconnection to keep ctrl_iface events
3942                          * consistent.
3943                          */
3944                         wpa_supplicant_event_disassoc(
3945                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3946                 }
3947                 wpa_supplicant_mark_disassoc(wpa_s);
3948                 radio_remove_works(wpa_s, NULL, 0);
3949
3950                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3951                 break;
3952         case EVENT_CHANNEL_LIST_CHANGED:
3953                 wpa_supplicant_update_channel_list(
3954                         wpa_s, &data->channel_list_changed);
3955                 break;
3956         case EVENT_INTERFACE_UNAVAILABLE:
3957                 wpas_p2p_interface_unavailable(wpa_s);
3958                 break;
3959         case EVENT_BEST_CHANNEL:
3960                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3961                         "(%d %d %d)",
3962                         data->best_chan.freq_24, data->best_chan.freq_5,
3963                         data->best_chan.freq_overall);
3964                 wpa_s->best_24_freq = data->best_chan.freq_24;
3965                 wpa_s->best_5_freq = data->best_chan.freq_5;
3966                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3967                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3968                                               data->best_chan.freq_5,
3969                                               data->best_chan.freq_overall);
3970                 break;
3971         case EVENT_UNPROT_DEAUTH:
3972                 wpa_supplicant_event_unprot_deauth(wpa_s,
3973                                                    &data->unprot_deauth);
3974                 break;
3975         case EVENT_UNPROT_DISASSOC:
3976                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3977                                                      &data->unprot_disassoc);
3978                 break;
3979         case EVENT_STATION_LOW_ACK:
3980 #ifdef CONFIG_AP
3981                 if (wpa_s->ap_iface && data)
3982                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3983                                                   data->low_ack.addr);
3984 #endif /* CONFIG_AP */
3985 #ifdef CONFIG_TDLS
3986                 if (data)
3987                         wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3988                                                           data->low_ack.addr);
3989 #endif /* CONFIG_TDLS */
3990                 break;
3991         case EVENT_IBSS_PEER_LOST:
3992 #ifdef CONFIG_IBSS_RSN
3993                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3994 #endif /* CONFIG_IBSS_RSN */
3995                 break;
3996         case EVENT_DRIVER_GTK_REKEY:
3997                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3998                               wpa_s->bssid, ETH_ALEN))
3999                         break;
4000                 if (!wpa_s->wpa)
4001                         break;
4002                 wpa_sm_update_replay_ctr(wpa_s->wpa,
4003                                          data->driver_gtk_rekey.replay_ctr);
4004                 break;
4005         case EVENT_SCHED_SCAN_STOPPED:
4006                 wpa_s->sched_scanning = 0;
4007                 resched = wpa_s->scanning && wpas_scan_scheduled(wpa_s);
4008                 wpa_supplicant_notify_scanning(wpa_s, 0);
4009
4010                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
4011                         break;
4012
4013                 /*
4014                  * Start a new sched scan to continue searching for more SSIDs
4015                  * either if timed out or PNO schedule scan is pending.
4016                  */
4017                 if (wpa_s->sched_scan_timed_out) {
4018                         wpa_supplicant_req_sched_scan(wpa_s);
4019                 } else if (wpa_s->pno_sched_pending) {
4020                         wpa_s->pno_sched_pending = 0;
4021                         wpas_start_pno(wpa_s);
4022                 } else if (resched) {
4023                         wpa_supplicant_req_scan(wpa_s, 0, 0);
4024                 }
4025
4026                 break;
4027         case EVENT_WPS_BUTTON_PUSHED:
4028 #ifdef CONFIG_WPS
4029                 wpas_wps_start_pbc(wpa_s, NULL, 0);
4030 #endif /* CONFIG_WPS */
4031                 break;
4032         case EVENT_AVOID_FREQUENCIES:
4033                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
4034                 break;
4035         case EVENT_CONNECT_FAILED_REASON:
4036 #ifdef CONFIG_AP
4037                 if (!wpa_s->ap_iface || !data)
4038                         break;
4039                 hostapd_event_connect_failed_reason(
4040                         wpa_s->ap_iface->bss[0],
4041                         data->connect_failed_reason.addr,
4042                         data->connect_failed_reason.code);
4043 #endif /* CONFIG_AP */
4044                 break;
4045         case EVENT_NEW_PEER_CANDIDATE:
4046 #ifdef CONFIG_MESH
4047                 if (!wpa_s->ifmsh || !data)
4048                         break;
4049                 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
4050                                      data->mesh_peer.ies,
4051                                      data->mesh_peer.ie_len);
4052 #endif /* CONFIG_MESH */
4053                 break;
4054         case EVENT_SURVEY:
4055 #ifdef CONFIG_AP
4056                 if (!wpa_s->ap_iface)
4057                         break;
4058                 hostapd_event_get_survey(wpa_s->ap_iface,
4059                                          &data->survey_results);
4060 #endif /* CONFIG_AP */
4061                 break;
4062         case EVENT_ACS_CHANNEL_SELECTED:
4063 #ifdef CONFIG_ACS
4064                 if (!wpa_s->ap_iface)
4065                         break;
4066                 hostapd_acs_channel_selected(wpa_s->ap_iface->bss[0],
4067                                              &data->acs_selected_channels);
4068 #endif /* CONFIG_ACS */
4069                 break;
4070         default:
4071                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
4072                 break;
4073         }
4074 }
4075
4076
4077 void wpa_supplicant_event_global(void *ctx, enum wpa_event_type event,
4078                                  union wpa_event_data *data)
4079 {
4080         struct wpa_supplicant *wpa_s;
4081
4082         if (event != EVENT_INTERFACE_STATUS)
4083                 return;
4084
4085         wpa_s = wpa_supplicant_get_iface(ctx, data->interface_status.ifname);
4086         if (wpa_s && wpa_s->driver->get_ifindex) {
4087                 unsigned int ifindex;
4088
4089                 ifindex = wpa_s->driver->get_ifindex(wpa_s->drv_priv);
4090                 if (ifindex != data->interface_status.ifindex) {
4091                         wpa_dbg(wpa_s, MSG_DEBUG,
4092                                 "interface status ifindex %d mismatch (%d)",
4093                                 ifindex, data->interface_status.ifindex);
4094                         return;
4095                 }
4096         }
4097 #ifdef CONFIG_MATCH_IFACE
4098         else if (data->interface_status.ievent == EVENT_INTERFACE_ADDED) {
4099                 struct wpa_interface *wpa_i;
4100
4101                 wpa_i = wpa_supplicant_match_iface(
4102                         ctx, data->interface_status.ifname);
4103                 if (!wpa_i)
4104                         return;
4105                 wpa_s = wpa_supplicant_add_iface(ctx, wpa_i, NULL);
4106                 os_free(wpa_i);
4107                 if (wpa_s)
4108                         wpa_s->matched = 1;
4109         }
4110 #endif /* CONFIG_MATCH_IFACE */
4111
4112         if (wpa_s)
4113                 wpa_supplicant_event(wpa_s, event, data);
4114 }