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