wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eapol_supp/eapol_supp_sm.h"
  13 #include "rsn_supp/wpa.h"
  14 #include "eloop.h"
  15 #include "config.h"
  16 #include "l2_packet/l2_packet.h"
  17 #include "wpa_supplicant_i.h"
  18 #include "driver_i.h"
  19 #include "pcsc_funcs.h"
  20 #include "rsn_supp/preauth.h"
  21 #include "rsn_supp/pmksa_cache.h"
  22 #include "common/wpa_ctrl.h"
  23 #include "eap_peer/eap.h"
  24 #include "ap/hostapd.h"
  25 #include "p2p/p2p.h"
  26 #include "wnm_sta.h"
  27 #include "notify.h"
  28 #include "common/ieee802_11_defs.h"
  29 #include "common/ieee802_11_common.h"
  30 #include "crypto/random.h"
  31 #include "blacklist.h"
  32 #include "wpas_glue.h"
  33 #include "wps_supplicant.h"
  34 #include "ibss_rsn.h"
  35 #include "sme.h"
  36 #include "gas_query.h"
  37 #include "p2p_supplicant.h"
  38 #include "bgscan.h"
  39 #include "autoscan.h"
  40 #include "ap.h"
  41 #include "bss.h"
  42 #include "scan.h"
  43 #include "offchannel.h"
  44 #include "interworking.h"
  45
  46
  47 #ifndef CONFIG_NO_SCAN_PROCESSING
  48 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  49                                               int new_scan, int own_request);
  50 #endif /* CONFIG_NO_SCAN_PROCESSING */
  51
  52
  53 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  54                               struct wpa_ssid *ssid)
  55 {
  56         struct os_reltime now;
  57
  58         if (ssid == NULL || ssid->disabled_until.sec == 0)
  59                 return 0;
  60
  61         os_get_reltime(&now);
  62         if (ssid->disabled_until.sec > now.sec)
  63                 return ssid->disabled_until.sec - now.sec;
  64
  65         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  66
  67         return 0;
  68 }
  69
  70
  71 static struct wpa_bss * wpa_supplicant_get_new_bss(
  72         struct wpa_supplicant *wpa_s, const u8 *bssid)
  73 {
  74         struct wpa_bss *bss = NULL;
  75         struct wpa_ssid *ssid = wpa_s->current_ssid;
  76
  77         if (ssid->ssid_len > 0)
  78                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
  79         if (!bss)
  80                 bss = wpa_bss_get_bssid(wpa_s, bssid);
  81
  82         return bss;
  83 }
  84
  85
  86 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  87 {
  88         struct wpa_ssid *ssid, *old_ssid;
  89         struct wpa_bss *bss;
  90         int res;
  91
  92         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  93                 return 0;
  94
  95         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  96                 "information");
  97         ssid = wpa_supplicant_get_ssid(wpa_s);
  98         if (ssid == NULL) {
  99                 wpa_msg(wpa_s, MSG_INFO,
 100                         "No network configuration found for the current AP");
 101                 return -1;
 102         }
 103
 104         if (wpas_network_disabled(wpa_s, ssid)) {
 105                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 106                 return -1;
 107         }
 108
 109         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 110             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 111                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 112                 return -1;
 113         }
 114
 115         res = wpas_temp_disabled(wpa_s, ssid);
 116         if (res > 0) {
 117                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 118                         "disabled for %d second(s)", res);
 119                 return -1;
 120         }
 121
 122         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 123                 "current AP");
 124         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 125                 u8 wpa_ie[80];
 126                 size_t wpa_ie_len = sizeof(wpa_ie);
 127                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 128                                               wpa_ie, &wpa_ie_len) < 0)
 129                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 130         } else {
 131                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 132         }
 133
 134         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 135                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 136         old_ssid = wpa_s->current_ssid;
 137         wpa_s->current_ssid = ssid;
 138
 139         bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 140         if (!bss) {
 141                 wpa_supplicant_update_scan_results(wpa_s);
 142
 143                 /* Get the BSS from the new scan results */
 144                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 145         }
 146
 147         if (bss)
 148                 wpa_s->current_bss = bss;
 149
 150         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 151         wpa_supplicant_initiate_eapol(wpa_s);
 152         if (old_ssid != wpa_s->current_ssid)
 153                 wpas_notify_network_changed(wpa_s);
 154
 155         return 0;
 156 }
 157
 158
 159 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 160 {
 161         struct wpa_supplicant *wpa_s = eloop_ctx;
 162
 163         if (wpa_s->countermeasures) {
 164                 wpa_s->countermeasures = 0;
 165                 wpa_drv_set_countermeasures(wpa_s, 0);
 166                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 167                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 168         }
 169 }
 170
 171
 172 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 173 {
 174         int bssid_changed;
 175
 176         wnm_bss_keep_alive_deinit(wpa_s);
 177
 178 #ifdef CONFIG_IBSS_RSN
 179         ibss_rsn_deinit(wpa_s->ibss_rsn);
 180         wpa_s->ibss_rsn = NULL;
 181 #endif /* CONFIG_IBSS_RSN */
 182
 183 #ifdef CONFIG_AP
 184         wpa_supplicant_ap_deinit(wpa_s);
 185 #endif /* CONFIG_AP */
 186
 187         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 188                 return;
 189
 190         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 191         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 192         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 193         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 194 #ifdef CONFIG_SME
 195         wpa_s->sme.prev_bssid_set = 0;
 196 #endif /* CONFIG_SME */
 197 #ifdef CONFIG_P2P
 198         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 199 #endif /* CONFIG_P2P */
 200         wpa_s->current_bss = NULL;
 201         wpa_s->assoc_freq = 0;
 202 #ifdef CONFIG_IEEE80211R
 203 #ifdef CONFIG_SME
 204         if (wpa_s->sme.ft_ies)
 205                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 206 #endif /* CONFIG_SME */
 207 #endif /* CONFIG_IEEE80211R */
 208
 209         if (bssid_changed)
 210                 wpas_notify_bssid_changed(wpa_s);
 211
 212         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 213         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 214         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 215                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 216         wpa_s->ap_ies_from_associnfo = 0;
 217         wpa_s->current_ssid = NULL;
 218         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 219         wpa_s->key_mgmt = 0;
 220 }
 221
 222
 223 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 224 {
 225         struct wpa_ie_data ie;
 226         int pmksa_set = -1;
 227         size_t i;
 228
 229         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 230             ie.pmkid == NULL)
 231                 return;
 232
 233         for (i = 0; i < ie.num_pmkid; i++) {
 234                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 235                                                     ie.pmkid + i * PMKID_LEN,
 236                                                     NULL, NULL, 0);
 237                 if (pmksa_set == 0) {
 238                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 239                         break;
 240                 }
 241         }
 242
 243         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 244                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 245 }
 246
 247
 248 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 249                                                  union wpa_event_data *data)
 250 {
 251         if (data == NULL) {
 252                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 253                         "event");
 254                 return;
 255         }
 256         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 257                 " index=%d preauth=%d",
 258                 MAC2STR(data->pmkid_candidate.bssid),
 259                 data->pmkid_candidate.index,
 260                 data->pmkid_candidate.preauth);
 261
 262         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 263                             data->pmkid_candidate.index,
 264                             data->pmkid_candidate.preauth);
 265 }
 266
 267
 268 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 269 {
 270         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 271             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 272                 return 0;
 273
 274 #ifdef IEEE8021X_EAPOL
 275         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 276             wpa_s->current_ssid &&
 277             !(wpa_s->current_ssid->eapol_flags &
 278               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 279                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 280                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 281                  * plaintext or static WEP keys). */
 282                 return 0;
 283         }
 284 #endif /* IEEE8021X_EAPOL */
 285
 286         return 1;
 287 }
 288
 289
 290 /**
 291  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 292  * @wpa_s: pointer to wpa_supplicant data
 293  * @ssid: Configuration data for the network
 294  * Returns: 0 on success, -1 on failure
 295  *
 296  * This function is called when starting authentication with a network that is
 297  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 298  */
 299 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 300                               struct wpa_ssid *ssid)
 301 {
 302 #ifdef IEEE8021X_EAPOL
 303 #ifdef PCSC_FUNCS
 304         int aka = 0, sim = 0;
 305
 306         if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
 307             wpa_s->scard != NULL || wpa_s->conf->external_sim)
 308                 return 0;
 309
 310         if (ssid == NULL || ssid->eap.eap_methods == NULL) {
 311                 sim = 1;
 312                 aka = 1;
 313         } else {
 314                 struct eap_method_type *eap = ssid->eap.eap_methods;
 315                 while (eap->vendor != EAP_VENDOR_IETF ||
 316                        eap->method != EAP_TYPE_NONE) {
 317                         if (eap->vendor == EAP_VENDOR_IETF) {
 318                                 if (eap->method == EAP_TYPE_SIM)
 319                                         sim = 1;
 320                                 else if (eap->method == EAP_TYPE_AKA ||
 321                                          eap->method == EAP_TYPE_AKA_PRIME)
 322                                         aka = 1;
 323                         }
 324                         eap++;
 325                 }
 326         }
 327
 328         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 329                 sim = 0;
 330         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 331             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 332             NULL)
 333                 aka = 0;
 334
 335         if (!sim && !aka) {
 336                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 337                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 338                         "enabled");
 339                 return 0;
 340         }
 341
 342         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 343                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 344
 345         wpa_s->scard = scard_init(NULL);
 346         if (wpa_s->scard == NULL) {
 347                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 348                         "(pcsc-lite)");
 349                 return -1;
 350         }
 351         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 352         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 353 #endif /* PCSC_FUNCS */
 354 #endif /* IEEE8021X_EAPOL */
 355
 356         return 0;
 357 }
 358
 359
 360 #ifndef CONFIG_NO_SCAN_PROCESSING
 361
 362 static int has_wep_key(struct wpa_ssid *ssid)
 363 {
 364         int i;
 365
 366         for (i = 0; i < NUM_WEP_KEYS; i++) {
 367                 if (ssid->wep_key_len[i])
 368                         return 1;
 369         }
 370
 371         return 0;
 372 }
 373
 374
 375 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 376                                         struct wpa_ssid *ssid)
 377 {
 378         int privacy = 0;
 379
 380         if (ssid->mixed_cell)
 381                 return 1;
 382
 383 #ifdef CONFIG_WPS
 384         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 385                 return 1;
 386 #endif /* CONFIG_WPS */
 387
 388         if (has_wep_key(ssid))
 389                 privacy = 1;
 390
 391 #ifdef IEEE8021X_EAPOL
 392         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 393             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 394                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 395                 privacy = 1;
 396 #endif /* IEEE8021X_EAPOL */
 397
 398         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 399                 privacy = 1;
 400
 401         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 402                 privacy = 1;
 403
 404         if (bss->caps & IEEE80211_CAP_PRIVACY)
 405                 return privacy;
 406         return !privacy;
 407 }
 408
 409
 410 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 411                                          struct wpa_ssid *ssid,
 412                                          struct wpa_bss *bss)
 413 {
 414         struct wpa_ie_data ie;
 415         int proto_match = 0;
 416         const u8 *rsn_ie, *wpa_ie;
 417         int ret;
 418         int wep_ok;
 419
 420         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 421         if (ret >= 0)
 422                 return ret;
 423
 424         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 425         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 426                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 427                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 428                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 429
 430         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 431         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 432                 proto_match++;
 433
 434                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 435                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 436                                 "failed");
 437                         break;
 438                 }
 439
 440                 if (wep_ok &&
 441                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 442                 {
 443                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 444                                 "in RSN IE");
 445                         return 1;
 446                 }
 447
 448                 if (!(ie.proto & ssid->proto)) {
 449                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 450                                 "mismatch");
 451                         break;
 452                 }
 453
 454                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 455                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 456                                 "cipher mismatch");
 457                         break;
 458                 }
 459
 460                 if (!(ie.group_cipher & ssid->group_cipher)) {
 461                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 462                                 "cipher mismatch");
 463                         break;
 464                 }
 465
 466                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 467                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 468                                 "mismatch");
 469                         break;
 470                 }
 471
 472 #ifdef CONFIG_IEEE80211W
 473                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 474                     (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
 475                      wpa_s->conf->pmf : ssid->ieee80211w) ==
 476                     MGMT_FRAME_PROTECTION_REQUIRED) {
 477                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 478                                 "frame protection");
 479                         break;
 480                 }
 481 #endif /* CONFIG_IEEE80211W */
 482
 483                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 484                 return 1;
 485         }
 486
 487         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 488         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 489                 proto_match++;
 490
 491                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 492                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 493                                 "failed");
 494                         break;
 495                 }
 496
 497                 if (wep_ok &&
 498                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 499                 {
 500                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 501                                 "in WPA IE");
 502                         return 1;
 503                 }
 504
 505                 if (!(ie.proto & ssid->proto)) {
 506                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 507                                 "mismatch");
 508                         break;
 509                 }
 510
 511                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 512                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 513                                 "cipher mismatch");
 514                         break;
 515                 }
 516
 517                 if (!(ie.group_cipher & ssid->group_cipher)) {
 518                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 519                                 "cipher mismatch");
 520                         break;
 521                 }
 522
 523                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 524                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 525                                 "mismatch");
 526                         break;
 527                 }
 528
 529                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 530                 return 1;
 531         }
 532
 533         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 534             !rsn_ie) {
 535                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 536                 return 1;
 537         }
 538
 539         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 540             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 541                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 542                 return 0;
 543         }
 544
 545         if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
 546             wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
 547                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
 548                 return 1;
 549         }
 550
 551         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 552                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 553                 return 1;
 554         }
 555
 556         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 557                 "WPA/WPA2");
 558
 559         return 0;
 560 }
 561
 562
 563 static int freq_allowed(int *freqs, int freq)
 564 {
 565         int i;
 566
 567         if (freqs == NULL)
 568                 return 1;
 569
 570         for (i = 0; freqs[i]; i++)
 571                 if (freqs[i] == freq)
 572                         return 1;
 573         return 0;
 574 }
 575
 576
 577 static int ht_supported(const struct hostapd_hw_modes *mode)
 578 {
 579         if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
 580                 /*
 581                  * The driver did not indicate whether it supports HT. Assume
 582                  * it does to avoid connection issues.
 583                  */
 584                 return 1;
 585         }
 586
 587         /*
 588          * IEEE Std 802.11n-2009 20.1.1:
 589          * An HT non-AP STA shall support all EQM rates for one spatial stream.
 590          */
 591         return mode->mcs_set[0] == 0xff;
 592 }
 593
 594
 595 static int vht_supported(const struct hostapd_hw_modes *mode)
 596 {
 597         if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) {
 598                 /*
 599                  * The driver did not indicate whether it supports VHT. Assume
 600                  * it does to avoid connection issues.
 601                  */
 602                 return 1;
 603         }
 604
 605         /*
 606          * A VHT non-AP STA shall support MCS 0-7 for one spatial stream.
 607          * TODO: Verify if this complies with the standard
 608          */
 609         return (mode->vht_mcs_set[0] & 0x3) != 3;
 610 }
 611
 612
 613 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 614 {
 615         const struct hostapd_hw_modes *mode = NULL, *modes;
 616         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 617         const u8 *rate_ie;
 618         int i, j, k;
 619
 620         if (bss->freq == 0)
 621                 return 1; /* Cannot do matching without knowing band */
 622
 623         modes = wpa_s->hw.modes;
 624         if (modes == NULL) {
 625                 /*
 626                  * The driver does not provide any additional information
 627                  * about the utilized hardware, so allow the connection attempt
 628                  * to continue.
 629                  */
 630                 return 1;
 631         }
 632
 633         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 634                 for (j = 0; j < modes[i].num_channels; j++) {
 635                         int freq = modes[i].channels[j].freq;
 636                         if (freq == bss->freq) {
 637                                 if (mode &&
 638                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 639                                         break; /* do not allow 802.11b replace
 640                                                 * 802.11g */
 641                                 mode = &modes[i];
 642                                 break;
 643                         }
 644                 }
 645         }
 646
 647         if (mode == NULL)
 648                 return 0;
 649
 650         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 651                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 652                 if (rate_ie == NULL)
 653                         continue;
 654
 655                 for (j = 2; j < rate_ie[1] + 2; j++) {
 656                         int flagged = !!(rate_ie[j] & 0x80);
 657                         int r = (rate_ie[j] & 0x7f) * 5;
 658
 659                         /*
 660                          * IEEE Std 802.11n-2009 7.3.2.2:
 661                          * The new BSS Membership selector value is encoded
 662                          * like a legacy basic rate, but it is not a rate and
 663                          * only indicates if the BSS members are required to
 664                          * support the mandatory features of Clause 20 [HT PHY]
 665                          * in order to join the BSS.
 666                          */
 667                         if (flagged && ((rate_ie[j] & 0x7f) ==
 668                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 669                                 if (!ht_supported(mode)) {
 670                                         wpa_dbg(wpa_s, MSG_DEBUG,
 671                                                 "   hardware does not support "
 672                                                 "HT PHY");
 673                                         return 0;
 674                                 }
 675                                 continue;
 676                         }
 677
 678                         /* There's also a VHT selector for 802.11ac */
 679                         if (flagged && ((rate_ie[j] & 0x7f) ==
 680                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 681                                 if (!vht_supported(mode)) {
 682                                         wpa_dbg(wpa_s, MSG_DEBUG,
 683                                                 "   hardware does not support "
 684                                                 "VHT PHY");
 685                                         return 0;
 686                                 }
 687                                 continue;
 688                         }
 689
 690                         if (!flagged)
 691                                 continue;
 692
 693                         /* check for legacy basic rates */
 694                         for (k = 0; k < mode->num_rates; k++) {
 695                                 if (mode->rates[k] == r)
 696                                         break;
 697                         }
 698                         if (k == mode->num_rates) {
 699                                 /*
 700                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 701                                  * order to join a BSS all required rates
 702                                  * have to be supported by the hardware.
 703                                  */
 704                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 705                                         "not support required rate %d.%d Mbps",
 706                                         r / 10, r % 10);
 707                                 return 0;
 708                         }
 709                 }
 710         }
 711
 712         return 1;
 713 }
 714
 715
 716 /*
 717  * Test whether BSS is in an ESS.
 718  * This is done differently in DMG (60 GHz) and non-DMG bands
 719  */
 720 static int bss_is_ess(struct wpa_bss *bss)
 721 {
 722         if (bss_is_dmg(bss)) {
 723                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 724                         IEEE80211_CAP_DMG_AP;
 725         }
 726
 727         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 728                 IEEE80211_CAP_ESS);
 729 }
 730
 731
 732 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 733                                             int i, struct wpa_bss *bss,
 734                                             struct wpa_ssid *group,
 735                                             int only_first_ssid)
 736 {
 737         u8 wpa_ie_len, rsn_ie_len;
 738         int wpa;
 739         struct wpa_blacklist *e;
 740         const u8 *ie;
 741         struct wpa_ssid *ssid;
 742         int osen;
 743
 744         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 745         wpa_ie_len = ie ? ie[1] : 0;
 746
 747         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 748         rsn_ie_len = ie ? ie[1] : 0;
 749
 750         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 751         osen = ie != NULL;
 752
 753         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 754                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
 755                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 756                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 757                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 758                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 759                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 760                 " p2p" : "",
 761                 osen ? " osen=1" : "");
 762
 763         e = wpa_blacklist_get(wpa_s, bss->bssid);
 764         if (e) {
 765                 int limit = 1;
 766                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 767                         /*
 768                          * When only a single network is enabled, we can
 769                          * trigger blacklisting on the first failure. This
 770                          * should not be done with multiple enabled networks to
 771                          * avoid getting forced to move into a worse ESS on
 772                          * single error if there are no other BSSes of the
 773                          * current ESS.
 774                          */
 775                         limit = 0;
 776                 }
 777                 if (e->count > limit) {
 778                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 779                                 "(count=%d limit=%d)", e->count, limit);
 780                         return NULL;
 781                 }
 782         }
 783
 784         if (bss->ssid_len == 0) {
 785                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 786                 return NULL;
 787         }
 788
 789         if (disallowed_bssid(wpa_s, bss->bssid)) {
 790                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 791                 return NULL;
 792         }
 793
 794         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 795                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 796                 return NULL;
 797         }
 798
 799         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 800
 801         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 802                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 803                 int res;
 804
 805                 if (wpas_network_disabled(wpa_s, ssid)) {
 806                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 807                         continue;
 808                 }
 809
 810                 res = wpas_temp_disabled(wpa_s, ssid);
 811                 if (res > 0) {
 812                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 813                                 "temporarily for %d second(s)", res);
 814                         continue;
 815                 }
 816
 817 #ifdef CONFIG_WPS
 818                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 819                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 820                                 "(WPS)");
 821                         continue;
 822                 }
 823
 824                 if (wpa && ssid->ssid_len == 0 &&
 825                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 826                         check_ssid = 0;
 827
 828                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 829                         /* Only allow wildcard SSID match if an AP
 830                          * advertises active WPS operation that matches
 831                          * with our mode. */
 832                         check_ssid = 1;
 833                         if (ssid->ssid_len == 0 &&
 834                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 835                                 check_ssid = 0;
 836                 }
 837 #endif /* CONFIG_WPS */
 838
 839                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 840                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 841                         check_ssid = 0;
 842
 843                 if (check_ssid &&
 844                     (bss->ssid_len != ssid->ssid_len ||
 845                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 846                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 847                         continue;
 848                 }
 849
 850                 if (ssid->bssid_set &&
 851                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 852                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 853                         continue;
 854                 }
 855
 856                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 857                         continue;
 858
 859                 if (!osen && !wpa &&
 860                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 861                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 862                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 863                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 864                                 "not allowed");
 865                         continue;
 866                 }
 867
 868                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 869                     has_wep_key(ssid)) {
 870                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 871                         continue;
 872                 }
 873
 874                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
 875                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
 876                                 "not allowed");
 877                         continue;
 878                 }
 879
 880                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 881                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 882                                 "mismatch");
 883                         continue;
 884                 }
 885
 886                 if (!bss_is_ess(bss)) {
 887                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 888                         continue;
 889                 }
 890
 891                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 892                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 893                                 "allowed");
 894                         continue;
 895                 }
 896
 897                 if (!rate_match(wpa_s, bss)) {
 898                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 899                                 "not match");
 900                         continue;
 901                 }
 902
 903 #ifdef CONFIG_P2P
 904                 if (ssid->p2p_group &&
 905                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 906                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 907                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
 908                         continue;
 909                 }
 910
 911                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
 912                         struct wpabuf *p2p_ie;
 913                         u8 dev_addr[ETH_ALEN];
 914
 915                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
 916                         if (ie == NULL) {
 917                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
 918                                 continue;
 919                         }
 920                         p2p_ie = wpa_bss_get_vendor_ie_multi(
 921                                 bss, P2P_IE_VENDOR_TYPE);
 922                         if (p2p_ie == NULL) {
 923                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
 924                                 continue;
 925                         }
 926
 927                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
 928                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
 929                                          ETH_ALEN) != 0) {
 930                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
 931                                 wpabuf_free(p2p_ie);
 932                                 continue;
 933                         }
 934                         wpabuf_free(p2p_ie);
 935                 }
 936
 937                 /*
 938                  * TODO: skip the AP if its P2P IE has Group Formation
 939                  * bit set in the P2P Group Capability Bitmap and we
 940                  * are not in Group Formation with that device.
 941                  */
 942 #endif /* CONFIG_P2P */
 943
 944                 /* Matching configuration found */
 945                 return ssid;
 946         }
 947
 948         /* No matching configuration found */
 949         return NULL;
 950 }
 951
 952
 953 static struct wpa_bss *
 954 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 955                           struct wpa_ssid *group,
 956                           struct wpa_ssid **selected_ssid,
 957                           int only_first_ssid)
 958 {
 959         unsigned int i;
 960
 961         if (only_first_ssid)
 962                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
 963                         group->id);
 964         else
 965                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 966                         group->priority);
 967
 968         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 969                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 970                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
 971                                                     only_first_ssid);
 972                 if (!*selected_ssid)
 973                         continue;
 974                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 975                         " ssid='%s'",
 976                         MAC2STR(bss->bssid),
 977                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
 978                 return bss;
 979         }
 980
 981         return NULL;
 982 }
 983
 984
 985 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 986                                              struct wpa_ssid **selected_ssid)
 987 {
 988         struct wpa_bss *selected = NULL;
 989         int prio;
 990         struct wpa_ssid *next_ssid = NULL;
 991
 992         if (wpa_s->last_scan_res == NULL ||
 993             wpa_s->last_scan_res_used == 0)
 994                 return NULL; /* no scan results from last update */
 995
 996         if (wpa_s->next_ssid) {
 997                 struct wpa_ssid *ssid;
 998
 999                 /* check that next_ssid is still valid */
1000                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1001                         if (ssid == wpa_s->next_ssid)
1002                                 break;
1003                 }
1004                 next_ssid = ssid;
1005                 wpa_s->next_ssid = NULL;
1006         }
1007
1008         while (selected == NULL) {
1009                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1010                         if (next_ssid && next_ssid->priority ==
1011                             wpa_s->conf->pssid[prio]->priority) {
1012                                 selected = wpa_supplicant_select_bss(
1013                                         wpa_s, next_ssid, selected_ssid, 1);
1014                                 if (selected)
1015                                         break;
1016                         }
1017                         selected = wpa_supplicant_select_bss(
1018                                 wpa_s, wpa_s->conf->pssid[prio],
1019                                 selected_ssid, 0);
1020                         if (selected)
1021                                 break;
1022                 }
1023
1024                 if (selected == NULL && wpa_s->blacklist &&
1025                     !wpa_s->countermeasures) {
1026                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1027                                 "blacklist and try again");
1028                         wpa_blacklist_clear(wpa_s);
1029                         wpa_s->blacklist_cleared++;
1030                 } else if (selected == NULL)
1031                         break;
1032         }
1033
1034         return selected;
1035 }
1036
1037
1038 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1039                                         int timeout_sec, int timeout_usec)
1040 {
1041         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1042                 /*
1043                  * No networks are enabled; short-circuit request so
1044                  * we don't wait timeout seconds before transitioning
1045                  * to INACTIVE state.
1046                  */
1047                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1048                         "since there are no enabled networks");
1049                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1050                 return;
1051         }
1052
1053         wpa_s->scan_for_connection = 1;
1054         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1055 }
1056
1057
1058 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1059                            struct wpa_bss *selected,
1060                            struct wpa_ssid *ssid)
1061 {
1062         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1063                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1064                         "PBC session overlap");
1065 #ifdef CONFIG_P2P
1066                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1067                     wpa_s->p2p_in_provisioning) {
1068                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1069                                                wpa_s, NULL);
1070                         return -1;
1071                 }
1072 #endif /* CONFIG_P2P */
1073
1074 #ifdef CONFIG_WPS
1075                 wpas_wps_cancel(wpa_s);
1076 #endif /* CONFIG_WPS */
1077                 return -1;
1078         }
1079
1080         wpa_msg(wpa_s, MSG_DEBUG,
1081                 "Considering connect request: reassociate: %d  selected: "
1082                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1083                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1084                 wpa_s->reassociate, MAC2STR(selected->bssid),
1085                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1086                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1087                 ssid, wpa_s->current_ssid);
1088
1089         /*
1090          * Do not trigger new association unless the BSSID has changed or if
1091          * reassociation is requested. If we are in process of associating with
1092          * the selected BSSID, do not trigger new attempt.
1093          */
1094         if (wpa_s->reassociate ||
1095             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1096              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1097                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1098               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1099                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1100                0) ||
1101               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1102                ssid != wpa_s->current_ssid)))) {
1103                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1104                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1105                         return 0;
1106                 }
1107                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1108                         MAC2STR(selected->bssid));
1109                 wpa_supplicant_associate(wpa_s, selected, ssid);
1110         } else {
1111                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1112                         "connect with the selected AP");
1113         }
1114
1115         return 0;
1116 }
1117
1118
1119 static struct wpa_ssid *
1120 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1121 {
1122         int prio;
1123         struct wpa_ssid *ssid;
1124
1125         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1126                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1127                 {
1128                         if (wpas_network_disabled(wpa_s, ssid))
1129                                 continue;
1130                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1131                             ssid->mode == IEEE80211_MODE_AP)
1132                                 return ssid;
1133                 }
1134         }
1135         return NULL;
1136 }
1137
1138
1139 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1140  * on BSS added and BSS changed events */
1141 static void wpa_supplicant_rsn_preauth_scan_results(
1142         struct wpa_supplicant *wpa_s)
1143 {
1144         struct wpa_bss *bss;
1145
1146         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1147                 return;
1148
1149         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1150                 const u8 *ssid, *rsn;
1151
1152                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1153                 if (ssid == NULL)
1154                         continue;
1155
1156                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1157                 if (rsn == NULL)
1158                         continue;
1159
1160                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1161         }
1162
1163 }
1164
1165
1166 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1167                                        struct wpa_bss *selected,
1168                                        struct wpa_ssid *ssid)
1169 {
1170         struct wpa_bss *current_bss = NULL;
1171         int min_diff;
1172
1173         if (wpa_s->reassociate)
1174                 return 1; /* explicit request to reassociate */
1175         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1176                 return 1; /* we are not associated; continue */
1177         if (wpa_s->current_ssid == NULL)
1178                 return 1; /* unknown current SSID */
1179         if (wpa_s->current_ssid != ssid)
1180                 return 1; /* different network block */
1181
1182         if (wpas_driver_bss_selection(wpa_s))
1183                 return 0; /* Driver-based roaming */
1184
1185         if (wpa_s->current_ssid->ssid)
1186                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1187                                           wpa_s->current_ssid->ssid,
1188                                           wpa_s->current_ssid->ssid_len);
1189         if (!current_bss)
1190                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1191
1192         if (!current_bss)
1193                 return 1; /* current BSS not seen in scan results */
1194
1195         if (current_bss == selected)
1196                 return 0;
1197
1198         if (selected->last_update_idx > current_bss->last_update_idx)
1199                 return 1; /* current BSS not seen in the last scan */
1200
1201 #ifndef CONFIG_NO_ROAMING
1202         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1203         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1204                 MAC2STR(current_bss->bssid), current_bss->level);
1205         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1206                 MAC2STR(selected->bssid), selected->level);
1207
1208         if (wpa_s->current_ssid->bssid_set &&
1209             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1210             0) {
1211                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1212                         "has preferred BSSID");
1213                 return 1;
1214         }
1215
1216         if (current_bss->level < 0 && current_bss->level > selected->level) {
1217                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1218                         "signal level");
1219                 return 0;
1220         }
1221
1222         min_diff = 2;
1223         if (current_bss->level < 0) {
1224                 if (current_bss->level < -85)
1225                         min_diff = 1;
1226                 else if (current_bss->level < -80)
1227                         min_diff = 2;
1228                 else if (current_bss->level < -75)
1229                         min_diff = 3;
1230                 else if (current_bss->level < -70)
1231                         min_diff = 4;
1232                 else
1233                         min_diff = 5;
1234         }
1235         if (abs(current_bss->level - selected->level) < min_diff) {
1236                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1237                         "in signal level");
1238                 return 0;
1239         }
1240
1241         return 1;
1242 #else /* CONFIG_NO_ROAMING */
1243         return 0;
1244 #endif /* CONFIG_NO_ROAMING */
1245 }
1246
1247
1248 /* Return != 0 if no scan results could be fetched or if scan results should not
1249  * be shared with other virtual interfaces. */
1250 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1251                                               union wpa_event_data *data,
1252                                               int own_request)
1253 {
1254         struct wpa_scan_results *scan_res = NULL;
1255         int ret = 0;
1256         int ap = 0;
1257 #ifndef CONFIG_NO_RANDOM_POOL
1258         size_t i, num;
1259 #endif /* CONFIG_NO_RANDOM_POOL */
1260
1261 #ifdef CONFIG_AP
1262         if (wpa_s->ap_iface)
1263                 ap = 1;
1264 #endif /* CONFIG_AP */
1265
1266         wpa_supplicant_notify_scanning(wpa_s, 0);
1267
1268         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1269                                                    data ? &data->scan_info :
1270                                                    NULL, 1);
1271         if (scan_res == NULL) {
1272                 if (wpa_s->conf->ap_scan == 2 || ap ||
1273                     wpa_s->scan_res_handler == scan_only_handler)
1274                         return -1;
1275                 if (!own_request)
1276                         return -1;
1277                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1278                         "scanning again");
1279                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1280                 ret = -1;
1281                 goto scan_work_done;
1282         }
1283
1284 #ifndef CONFIG_NO_RANDOM_POOL
1285         num = scan_res->num;
1286         if (num > 10)
1287                 num = 10;
1288         for (i = 0; i < num; i++) {
1289                 u8 buf[5];
1290                 struct wpa_scan_res *res = scan_res->res[i];
1291                 buf[0] = res->bssid[5];
1292                 buf[1] = res->qual & 0xff;
1293                 buf[2] = res->noise & 0xff;
1294                 buf[3] = res->level & 0xff;
1295                 buf[4] = res->tsf & 0xff;
1296                 random_add_randomness(buf, sizeof(buf));
1297         }
1298 #endif /* CONFIG_NO_RANDOM_POOL */
1299
1300         if (own_request && wpa_s->scan_res_handler &&
1301             (wpa_s->own_scan_running || !wpa_s->external_scan_running)) {
1302                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1303                                          struct wpa_scan_results *scan_res);
1304
1305                 scan_res_handler = wpa_s->scan_res_handler;
1306                 wpa_s->scan_res_handler = NULL;
1307                 scan_res_handler(wpa_s, scan_res);
1308                 ret = -2;
1309                 goto scan_work_done;
1310         }
1311
1312         if (ap) {
1313                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1314 #ifdef CONFIG_AP
1315                 if (wpa_s->ap_iface->scan_cb)
1316                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1317 #endif /* CONFIG_AP */
1318                 goto scan_work_done;
1319         }
1320
1321         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1322                 wpa_s->own_scan_running, wpa_s->external_scan_running);
1323         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1324             wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1325                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1326                              wpa_s->manual_scan_id);
1327                 wpa_s->manual_scan_use_id = 0;
1328         } else {
1329                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1330         }
1331         wpas_notify_scan_results(wpa_s);
1332
1333         wpas_notify_scan_done(wpa_s, 1);
1334
1335         if (!wpa_s->own_scan_running && wpa_s->external_scan_running) {
1336                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1337                 wpa_scan_results_free(scan_res);
1338                 return 0;
1339         }
1340
1341         if (sme_proc_obss_scan(wpa_s) > 0)
1342                 goto scan_work_done;
1343
1344         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1345                 goto scan_work_done;
1346
1347         if (autoscan_notify_scan(wpa_s, scan_res))
1348                 goto scan_work_done;
1349
1350         if (wpa_s->disconnected) {
1351                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1352                 goto scan_work_done;
1353         }
1354
1355         if (!wpas_driver_bss_selection(wpa_s) &&
1356             bgscan_notify_scan(wpa_s, scan_res) == 1)
1357                 goto scan_work_done;
1358
1359         wpas_wps_update_ap_info(wpa_s, scan_res);
1360
1361         wpa_scan_results_free(scan_res);
1362
1363         if (wpa_s->scan_work) {
1364                 struct wpa_radio_work *work = wpa_s->scan_work;
1365                 wpa_s->scan_work = NULL;
1366                 radio_work_done(work);
1367         }
1368
1369         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1370
1371 scan_work_done:
1372         wpa_scan_results_free(scan_res);
1373         if (wpa_s->scan_work) {
1374                 struct wpa_radio_work *work = wpa_s->scan_work;
1375                 wpa_s->scan_work = NULL;
1376                 radio_work_done(work);
1377         }
1378         return ret;
1379 }
1380
1381
1382 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1383                                               int new_scan, int own_request)
1384 {
1385         struct wpa_bss *selected;
1386         struct wpa_ssid *ssid = NULL;
1387
1388         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1389
1390         if (selected) {
1391                 int skip;
1392                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1393                 if (skip) {
1394                         if (new_scan)
1395                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1396                         return 0;
1397                 }
1398
1399                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1400                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1401                         return -1;
1402                 }
1403                 if (new_scan)
1404                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1405                 /*
1406                  * Do not notify other virtual radios of scan results since we do not
1407                  * want them to start other associations at the same time.
1408                  */
1409                 return 1;
1410         } else {
1411                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1412                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1413                 if (ssid) {
1414                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1415                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1416                         if (new_scan)
1417                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1418                 } else if (own_request) {
1419                         /*
1420                          * No SSID found. If SCAN results are as a result of
1421                          * own scan request and not due to a scan request on
1422                          * another shared interface, try another scan.
1423                          */
1424                         int timeout_sec = wpa_s->scan_interval;
1425                         int timeout_usec = 0;
1426 #ifdef CONFIG_P2P
1427                         if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1428                                 return 0;
1429
1430                         if (wpa_s->p2p_in_provisioning ||
1431                             wpa_s->show_group_started ||
1432                             wpa_s->p2p_in_invitation) {
1433                                 /*
1434                                  * Use shorter wait during P2P Provisioning
1435                                  * state and during P2P join-a-group operation
1436                                  * to speed up group formation.
1437                                  */
1438                                 timeout_sec = 0;
1439                                 timeout_usec = 250000;
1440                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1441                                                             timeout_usec);
1442                                 return 0;
1443                         }
1444 #endif /* CONFIG_P2P */
1445 #ifdef CONFIG_INTERWORKING
1446                         if (wpa_s->conf->auto_interworking &&
1447                             wpa_s->conf->interworking &&
1448                             wpa_s->conf->cred) {
1449                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1450                                         "start ANQP fetch since no matching "
1451                                         "networks found");
1452                                 wpa_s->network_select = 1;
1453                                 wpa_s->auto_network_select = 1;
1454                                 interworking_start_fetch_anqp(wpa_s);
1455                                 return 1;
1456                         }
1457 #endif /* CONFIG_INTERWORKING */
1458 #ifdef CONFIG_WPS
1459                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1460                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1461                                 timeout_sec = 0;
1462                                 timeout_usec = 500000;
1463                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1464                                                             timeout_usec);
1465                                 return 0;
1466                         }
1467 #endif /* CONFIG_WPS */
1468                         if (wpa_supplicant_req_sched_scan(wpa_s))
1469                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1470                                                             timeout_usec);
1471                 }
1472         }
1473         return 0;
1474 }
1475
1476
1477 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1478                                               union wpa_event_data *data)
1479 {
1480         struct wpa_supplicant *ifs;
1481
1482         if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
1483                 /*
1484                  * If no scan results could be fetched, then no need to
1485                  * notify those interfaces that did not actually request
1486                  * this scan. Similarly, if scan results started a new operation on this
1487                  * interface, do not notify other interfaces to avoid concurrent
1488                  * operations during a connection attempt.
1489                  */
1490                 return;
1491         }
1492
1493         /*
1494          * Check other interfaces to see if they share the same radio. If
1495          * so, they get updated with this same scan info.
1496          */
1497         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1498                          radio_list) {
1499                 if (ifs != wpa_s) {
1500                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1501                                    "sibling", ifs->ifname);
1502                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1503                 }
1504         }
1505 }
1506
1507 #endif /* CONFIG_NO_SCAN_PROCESSING */
1508
1509
1510 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1511 {
1512 #ifdef CONFIG_NO_SCAN_PROCESSING
1513         return -1;
1514 #else /* CONFIG_NO_SCAN_PROCESSING */
1515         struct os_reltime now;
1516
1517         if (wpa_s->last_scan_res_used <= 0)
1518                 return -1;
1519
1520         os_get_reltime(&now);
1521         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1522                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1523                 return -1;
1524         }
1525
1526         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1527 #endif /* CONFIG_NO_SCAN_PROCESSING */
1528 }
1529
1530 #ifdef CONFIG_WNM
1531
1532 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1533 {
1534         struct wpa_supplicant *wpa_s = eloop_ctx;
1535
1536         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1537                 return;
1538
1539         if (!wpa_s->no_keep_alive) {
1540                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1541                            MAC2STR(wpa_s->bssid));
1542                 /* TODO: could skip this if normal data traffic has been sent */
1543                 /* TODO: Consider using some more appropriate data frame for
1544                  * this */
1545                 if (wpa_s->l2)
1546                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1547                                        (u8 *) "", 0);
1548         }
1549
1550 #ifdef CONFIG_SME
1551         if (wpa_s->sme.bss_max_idle_period) {
1552                 unsigned int msec;
1553                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1554                 if (msec > 100)
1555                         msec -= 100;
1556                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1557                                        wnm_bss_keep_alive, wpa_s, NULL);
1558         }
1559 #endif /* CONFIG_SME */
1560 }
1561
1562
1563 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1564                                    const u8 *ies, size_t ies_len)
1565 {
1566         struct ieee802_11_elems elems;
1567
1568         if (ies == NULL)
1569                 return;
1570
1571         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1572                 return;
1573
1574 #ifdef CONFIG_SME
1575         if (elems.bss_max_idle_period) {
1576                 unsigned int msec;
1577                 wpa_s->sme.bss_max_idle_period =
1578                         WPA_GET_LE16(elems.bss_max_idle_period);
1579                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1580                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1581                            (elems.bss_max_idle_period[2] & 0x01) ?
1582                            " (protected keep-live required)" : "");
1583                 if (wpa_s->sme.bss_max_idle_period == 0)
1584                         wpa_s->sme.bss_max_idle_period = 1;
1585                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1586                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1587                          /* msec times 1000 */
1588                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1589                         if (msec > 100)
1590                                 msec -= 100;
1591                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1592                                                wnm_bss_keep_alive, wpa_s,
1593                                                NULL);
1594                 }
1595         }
1596 #endif /* CONFIG_SME */
1597 }
1598
1599 #endif /* CONFIG_WNM */
1600
1601
1602 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1603 {
1604 #ifdef CONFIG_WNM
1605         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1606 #endif /* CONFIG_WNM */
1607 }
1608
1609
1610 #ifdef CONFIG_INTERWORKING
1611
1612 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1613                             size_t len)
1614 {
1615         int res;
1616
1617         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1618         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1619         if (res) {
1620                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1621         }
1622
1623         return res;
1624 }
1625
1626
1627 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1628                                             const u8 *ies, size_t ies_len)
1629 {
1630         struct ieee802_11_elems elems;
1631
1632         if (ies == NULL)
1633                 return;
1634
1635         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1636                 return;
1637
1638         if (elems.qos_map_set) {
1639                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1640                                  elems.qos_map_set_len);
1641         }
1642 }
1643
1644 #endif /* CONFIG_INTERWORKING */
1645
1646
1647 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1648                                           union wpa_event_data *data)
1649 {
1650         int l, len, found = 0, wpa_found, rsn_found;
1651         const u8 *p;
1652 #ifdef CONFIG_IEEE80211R
1653         u8 bssid[ETH_ALEN];
1654 #endif /* CONFIG_IEEE80211R */
1655
1656         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1657         if (data->assoc_info.req_ies)
1658                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1659                             data->assoc_info.req_ies_len);
1660         if (data->assoc_info.resp_ies) {
1661                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1662                             data->assoc_info.resp_ies_len);
1663 #ifdef CONFIG_TDLS
1664                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1665                                         data->assoc_info.resp_ies_len);
1666 #endif /* CONFIG_TDLS */
1667 #ifdef CONFIG_WNM
1668                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1669                                        data->assoc_info.resp_ies_len);
1670 #endif /* CONFIG_WNM */
1671 #ifdef CONFIG_INTERWORKING
1672                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1673                                                 data->assoc_info.resp_ies_len);
1674 #endif /* CONFIG_INTERWORKING */
1675         }
1676         if (data->assoc_info.beacon_ies)
1677                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1678                             data->assoc_info.beacon_ies,
1679                             data->assoc_info.beacon_ies_len);
1680         if (data->assoc_info.freq)
1681                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1682                         data->assoc_info.freq);
1683
1684         p = data->assoc_info.req_ies;
1685         l = data->assoc_info.req_ies_len;
1686
1687         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1688         while (p && l >= 2) {
1689                 len = p[1] + 2;
1690                 if (len > l) {
1691                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1692                                     p, l);
1693                         break;
1694                 }
1695                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1696                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1697                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1698                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1699                                 break;
1700                         found = 1;
1701                         wpa_find_assoc_pmkid(wpa_s);
1702                         break;
1703                 }
1704                 l -= len;
1705                 p += len;
1706         }
1707         if (!found && data->assoc_info.req_ies)
1708                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1709
1710 #ifdef CONFIG_IEEE80211R
1711 #ifdef CONFIG_SME
1712         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1713                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1714                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1715                                                  data->assoc_info.resp_ies,
1716                                                  data->assoc_info.resp_ies_len,
1717                                                  bssid) < 0) {
1718                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1719                                 "Reassociation Response failed");
1720                         wpa_supplicant_deauthenticate(
1721                                 wpa_s, WLAN_REASON_INVALID_IE);
1722                         return -1;
1723                 }
1724         }
1725
1726         p = data->assoc_info.resp_ies;
1727         l = data->assoc_info.resp_ies_len;
1728
1729 #ifdef CONFIG_WPS_STRICT
1730         if (p && wpa_s->current_ssid &&
1731             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1732                 struct wpabuf *wps;
1733                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1734                 if (wps == NULL) {
1735                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1736                                 "include WPS IE in (Re)Association Response");
1737                         return -1;
1738                 }
1739
1740                 if (wps_validate_assoc_resp(wps) < 0) {
1741                         wpabuf_free(wps);
1742                         wpa_supplicant_deauthenticate(
1743                                 wpa_s, WLAN_REASON_INVALID_IE);
1744                         return -1;
1745                 }
1746                 wpabuf_free(wps);
1747         }
1748 #endif /* CONFIG_WPS_STRICT */
1749
1750         /* Go through the IEs and make a copy of the MDIE, if present. */
1751         while (p && l >= 2) {
1752                 len = p[1] + 2;
1753                 if (len > l) {
1754                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1755                                     p, l);
1756                         break;
1757                 }
1758                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1759                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1760                         wpa_s->sme.ft_used = 1;
1761                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1762                                   MOBILITY_DOMAIN_ID_LEN);
1763                         break;
1764                 }
1765                 l -= len;
1766                 p += len;
1767         }
1768 #endif /* CONFIG_SME */
1769
1770         /* Process FT when SME is in the driver */
1771         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1772             wpa_ft_is_completed(wpa_s->wpa)) {
1773                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1774                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1775                                                  data->assoc_info.resp_ies,
1776                                                  data->assoc_info.resp_ies_len,
1777                                                  bssid) < 0) {
1778                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1779                                 "Reassociation Response failed");
1780                         wpa_supplicant_deauthenticate(
1781                                 wpa_s, WLAN_REASON_INVALID_IE);
1782                         return -1;
1783                 }
1784                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1785         }
1786
1787         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1788                              data->assoc_info.resp_ies_len);
1789 #endif /* CONFIG_IEEE80211R */
1790
1791         /* WPA/RSN IE from Beacon/ProbeResp */
1792         p = data->assoc_info.beacon_ies;
1793         l = data->assoc_info.beacon_ies_len;
1794
1795         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1796          */
1797         wpa_found = rsn_found = 0;
1798         while (p && l >= 2) {
1799                 len = p[1] + 2;
1800                 if (len > l) {
1801                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1802                                     p, l);
1803                         break;
1804                 }
1805                 if (!wpa_found &&
1806                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1807                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1808                         wpa_found = 1;
1809                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1810                 }
1811
1812                 if (!rsn_found &&
1813                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1814                         rsn_found = 1;
1815                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1816                 }
1817
1818                 l -= len;
1819                 p += len;
1820         }
1821
1822         if (!wpa_found && data->assoc_info.beacon_ies)
1823                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1824         if (!rsn_found && data->assoc_info.beacon_ies)
1825                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1826         if (wpa_found || rsn_found)
1827                 wpa_s->ap_ies_from_associnfo = 1;
1828
1829         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1830             wpa_s->assoc_freq != data->assoc_info.freq) {
1831                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1832                            "%u to %u MHz",
1833                            wpa_s->assoc_freq, data->assoc_info.freq);
1834                 wpa_supplicant_update_scan_results(wpa_s);
1835         }
1836
1837         wpa_s->assoc_freq = data->assoc_info.freq;
1838
1839         return 0;
1840 }
1841
1842
1843 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1844 {
1845         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1846
1847         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1848                 return -1;
1849
1850         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1851                 return 0;
1852
1853         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1854                                         WPA_IE_VENDOR_TYPE);
1855         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1856
1857         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1858                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1859             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1860                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1861                 return -1;
1862
1863         return 0;
1864 }
1865
1866
1867 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1868                                        union wpa_event_data *data)
1869 {
1870         u8 bssid[ETH_ALEN];
1871         int ft_completed;
1872
1873 #ifdef CONFIG_AP
1874         if (wpa_s->ap_iface) {
1875                 if (!data)
1876                         return;
1877                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1878                                     data->assoc_info.addr,
1879                                     data->assoc_info.req_ies,
1880                                     data->assoc_info.req_ies_len,
1881                                     data->assoc_info.reassoc);
1882                 return;
1883         }
1884 #endif /* CONFIG_AP */
1885
1886         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1887         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1888                 return;
1889
1890         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1891                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1892                 wpa_supplicant_deauthenticate(
1893                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1894                 return;
1895         }
1896
1897         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1898         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1899                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1900                         MACSTR, MAC2STR(bssid));
1901                 random_add_randomness(bssid, ETH_ALEN);
1902                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1903                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1904                 wpas_notify_bssid_changed(wpa_s);
1905
1906                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1907                         wpa_clear_keys(wpa_s, bssid);
1908                 }
1909                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1910                         wpa_supplicant_deauthenticate(
1911                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1912                         return;
1913                 }
1914
1915                 if (wpa_s->conf->ap_scan == 1 &&
1916                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1917                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1918                                 wpa_msg(wpa_s, MSG_WARNING,
1919                                         "WPA/RSN IEs not updated");
1920                 }
1921         }
1922
1923 #ifdef CONFIG_SME
1924         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1925         wpa_s->sme.prev_bssid_set = 1;
1926 #endif /* CONFIG_SME */
1927
1928         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1929         if (wpa_s->current_ssid) {
1930                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1931                  * initialized before association, but for other modes,
1932                  * initialize PC/SC here, if the current configuration needs
1933                  * smartcard or SIM/USIM. */
1934                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1935         }
1936         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1937         if (wpa_s->l2)
1938                 l2_packet_notify_auth_start(wpa_s->l2);
1939
1940         /*
1941          * Set portEnabled first to FALSE in order to get EAP state machine out
1942          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1943          * state machine may transit to AUTHENTICATING state based on obsolete
1944          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1945          * AUTHENTICATED without ever giving chance to EAP state machine to
1946          * reset the state.
1947          */
1948         if (!ft_completed) {
1949                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1950                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1951         }
1952         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1953                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1954         /* 802.1X::portControl = Auto */
1955         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1956         wpa_s->eapol_received = 0;
1957         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1958             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1959             (wpa_s->current_ssid &&
1960              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1961                 if (wpa_s->current_ssid &&
1962                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
1963                     (wpa_s->drv_flags &
1964                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1965                         /*
1966                          * Set the key after having received joined-IBSS event
1967                          * from the driver.
1968                          */
1969                         wpa_supplicant_set_wpa_none_key(wpa_s,
1970                                                         wpa_s->current_ssid);
1971                 }
1972                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1973                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1974         } else if (!ft_completed) {
1975                 /* Timeout for receiving the first EAPOL packet */
1976                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1977         }
1978         wpa_supplicant_cancel_scan(wpa_s);
1979
1980         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1981             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1982                 /*
1983                  * We are done; the driver will take care of RSN 4-way
1984                  * handshake.
1985                  */
1986                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1987                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1988                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1989                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1990         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1991                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1992                 /*
1993                  * The driver will take care of RSN 4-way handshake, so we need
1994                  * to allow EAPOL supplicant to complete its work without
1995                  * waiting for WPA supplicant.
1996                  */
1997                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1998         } else if (ft_completed) {
1999                 /*
2000                  * FT protocol completed - make sure EAPOL state machine ends
2001                  * up in authenticated.
2002                  */
2003                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2004                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2005                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2006                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2007         }
2008
2009         wpa_s->last_eapol_matches_bssid = 0;
2010
2011         if (wpa_s->pending_eapol_rx) {
2012                 struct os_reltime now, age;
2013                 os_get_reltime(&now);
2014                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2015                 if (age.sec == 0 && age.usec < 100000 &&
2016                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2017                     0) {
2018                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2019                                 "frame that was received just before "
2020                                 "association notification");
2021                         wpa_supplicant_rx_eapol(
2022                                 wpa_s, wpa_s->pending_eapol_rx_src,
2023                                 wpabuf_head(wpa_s->pending_eapol_rx),
2024                                 wpabuf_len(wpa_s->pending_eapol_rx));
2025                 }
2026                 wpabuf_free(wpa_s->pending_eapol_rx);
2027                 wpa_s->pending_eapol_rx = NULL;
2028         }
2029
2030         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2031              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2032             wpa_s->current_ssid &&
2033             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2034                 /* Set static WEP keys again */
2035                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2036         }
2037
2038 #ifdef CONFIG_IBSS_RSN
2039         if (wpa_s->current_ssid &&
2040             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2041             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2042             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2043             wpa_s->ibss_rsn == NULL) {
2044                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2045                 if (!wpa_s->ibss_rsn) {
2046                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2047                         wpa_supplicant_deauthenticate(
2048                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2049                         return;
2050                 }
2051
2052                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2053         }
2054 #endif /* CONFIG_IBSS_RSN */
2055
2056         wpas_wps_notify_assoc(wpa_s, bssid);
2057 }
2058
2059
2060 static int disconnect_reason_recoverable(u16 reason_code)
2061 {
2062         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2063                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2064                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2065 }
2066
2067
2068 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2069                                           u16 reason_code,
2070                                           int locally_generated)
2071 {
2072         const u8 *bssid;
2073
2074         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2075                 /*
2076                  * At least Host AP driver and a Prism3 card seemed to be
2077                  * generating streams of disconnected events when configuring
2078                  * IBSS for WPA-None. Ignore them for now.
2079                  */
2080                 return;
2081         }
2082
2083         bssid = wpa_s->bssid;
2084         if (is_zero_ether_addr(bssid))
2085                 bssid = wpa_s->pending_bssid;
2086
2087         if (!is_zero_ether_addr(bssid) ||
2088             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2089                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2090                         " reason=%d%s",
2091                         MAC2STR(bssid), reason_code,
2092                         locally_generated ? " locally_generated=1" : "");
2093         }
2094 }
2095
2096
2097 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2098                                  int locally_generated)
2099 {
2100         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2101             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2102                 return 0; /* Not in 4-way handshake with PSK */
2103
2104         /*
2105          * It looks like connection was lost while trying to go through PSK
2106          * 4-way handshake. Filter out known disconnection cases that are caused
2107          * by something else than PSK mismatch to avoid confusing reports.
2108          */
2109
2110         if (locally_generated) {
2111                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2112                         return 0;
2113         }
2114
2115         return 1;
2116 }
2117
2118
2119 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2120                                                  u16 reason_code,
2121                                                  int locally_generated)
2122 {
2123         const u8 *bssid;
2124         int authenticating;
2125         u8 prev_pending_bssid[ETH_ALEN];
2126         struct wpa_bss *fast_reconnect = NULL;
2127         struct wpa_ssid *fast_reconnect_ssid = NULL;
2128         struct wpa_ssid *last_ssid;
2129
2130         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2131         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2132
2133         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2134                 /*
2135                  * At least Host AP driver and a Prism3 card seemed to be
2136                  * generating streams of disconnected events when configuring
2137                  * IBSS for WPA-None. Ignore them for now.
2138                  */
2139                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2140                         "IBSS/WPA-None mode");
2141                 return;
2142         }
2143
2144         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2145                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2146                         "pre-shared key may be incorrect");
2147                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2148                         return; /* P2P group removed */
2149                 wpas_auth_failed(wpa_s, "WRONG_KEY");
2150         }
2151         if (!wpa_s->disconnected &&
2152             (!wpa_s->auto_reconnect_disabled ||
2153              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)) {
2154                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2155                         "reconnect (wps=%d wpa_state=%d)",
2156                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2157                         wpa_s->wpa_state);
2158                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2159                     wpa_s->current_ssid &&
2160                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2161                     !locally_generated &&
2162                     disconnect_reason_recoverable(reason_code)) {
2163                         /*
2164                          * It looks like the AP has dropped association with
2165                          * us, but could allow us to get back in. Try to
2166                          * reconnect to the same BSS without full scan to save
2167                          * time for some common cases.
2168                          */
2169                         fast_reconnect = wpa_s->current_bss;
2170                         fast_reconnect_ssid = wpa_s->current_ssid;
2171                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2172                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2173                 else
2174                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2175                                 "immediate scan");
2176         } else {
2177                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2178                         "try to re-connect");
2179                 wpa_s->reassociate = 0;
2180                 wpa_s->disconnected = 1;
2181                 wpa_supplicant_cancel_sched_scan(wpa_s);
2182         }
2183         bssid = wpa_s->bssid;
2184         if (is_zero_ether_addr(bssid))
2185                 bssid = wpa_s->pending_bssid;
2186         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2187                 wpas_connection_failed(wpa_s, bssid);
2188         wpa_sm_notify_disassoc(wpa_s->wpa);
2189         if (locally_generated)
2190                 wpa_s->disconnect_reason = -reason_code;
2191         else
2192                 wpa_s->disconnect_reason = reason_code;
2193         wpas_notify_disconnect_reason(wpa_s);
2194         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2195                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2196                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2197         }
2198         last_ssid = wpa_s->current_ssid;
2199         wpa_supplicant_mark_disassoc(wpa_s);
2200
2201         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2202                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2203                 wpa_s->current_ssid = last_ssid;
2204         }
2205
2206         if (fast_reconnect &&
2207             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2208             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2209             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2210                              fast_reconnect->ssid_len) &&
2211             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2212 #ifndef CONFIG_NO_SCAN_PROCESSING
2213                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2214                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2215                                            fast_reconnect_ssid) < 0) {
2216                         /* Recover through full scan */
2217                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2218                 }
2219 #endif /* CONFIG_NO_SCAN_PROCESSING */
2220         } else if (fast_reconnect) {
2221                 /*
2222                  * Could not reconnect to the same BSS due to network being
2223                  * disabled. Use a new scan to match the alternative behavior
2224                  * above, i.e., to continue automatic reconnection attempt in a
2225                  * way that enforces disabled network rules.
2226                  */
2227                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2228         }
2229 }
2230
2231
2232 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2233 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2234 {
2235         struct wpa_supplicant *wpa_s = eloop_ctx;
2236
2237         if (!wpa_s->pending_mic_error_report)
2238                 return;
2239
2240         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2241         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2242         wpa_s->pending_mic_error_report = 0;
2243 }
2244 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2245
2246
2247 static void
2248 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2249                                          union wpa_event_data *data)
2250 {
2251         int pairwise;
2252         struct os_reltime t;
2253
2254         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2255         pairwise = (data && data->michael_mic_failure.unicast);
2256         os_get_reltime(&t);
2257         if ((wpa_s->last_michael_mic_error.sec &&
2258              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2259             wpa_s->pending_mic_error_report) {
2260                 if (wpa_s->pending_mic_error_report) {
2261                         /*
2262                          * Send the pending MIC error report immediately since
2263                          * we are going to start countermeasures and AP better
2264                          * do the same.
2265                          */
2266                         wpa_sm_key_request(wpa_s->wpa, 1,
2267                                            wpa_s->pending_mic_error_pairwise);
2268                 }
2269
2270                 /* Send the new MIC error report immediately since we are going
2271                  * to start countermeasures and AP better do the same.
2272                  */
2273                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2274
2275                 /* initialize countermeasures */
2276                 wpa_s->countermeasures = 1;
2277
2278                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2279
2280                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2281
2282                 /*
2283                  * Need to wait for completion of request frame. We do not get
2284                  * any callback for the message completion, so just wait a
2285                  * short while and hope for the best. */
2286                 os_sleep(0, 10000);
2287
2288                 wpa_drv_set_countermeasures(wpa_s, 1);
2289                 wpa_supplicant_deauthenticate(wpa_s,
2290                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2291                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2292                                      wpa_s, NULL);
2293                 eloop_register_timeout(60, 0,
2294                                        wpa_supplicant_stop_countermeasures,
2295                                        wpa_s, NULL);
2296                 /* TODO: mark the AP rejected for 60 second. STA is
2297                  * allowed to associate with another AP.. */
2298         } else {
2299 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2300                 if (wpa_s->mic_errors_seen) {
2301                         /*
2302                          * Reduce the effectiveness of Michael MIC error
2303                          * reports as a means for attacking against TKIP if
2304                          * more than one MIC failure is noticed with the same
2305                          * PTK. We delay the transmission of the reports by a
2306                          * random time between 0 and 60 seconds in order to
2307                          * force the attacker wait 60 seconds before getting
2308                          * the information on whether a frame resulted in a MIC
2309                          * failure.
2310                          */
2311                         u8 rval[4];
2312                         int sec;
2313
2314                         if (os_get_random(rval, sizeof(rval)) < 0)
2315                                 sec = os_random() % 60;
2316                         else
2317                                 sec = WPA_GET_BE32(rval) % 60;
2318                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2319                                 "report %d seconds", sec);
2320                         wpa_s->pending_mic_error_report = 1;
2321                         wpa_s->pending_mic_error_pairwise = pairwise;
2322                         eloop_cancel_timeout(
2323                                 wpa_supplicant_delayed_mic_error_report,
2324                                 wpa_s, NULL);
2325                         eloop_register_timeout(
2326                                 sec, os_random() % 1000000,
2327                                 wpa_supplicant_delayed_mic_error_report,
2328                                 wpa_s, NULL);
2329                 } else {
2330                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2331                 }
2332 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2333                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2334 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2335         }
2336         wpa_s->last_michael_mic_error = t;
2337         wpa_s->mic_errors_seen++;
2338 }
2339
2340
2341 #ifdef CONFIG_TERMINATE_ONLASTIF
2342 static int any_interfaces(struct wpa_supplicant *head)
2343 {
2344         struct wpa_supplicant *wpa_s;
2345
2346         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2347                 if (!wpa_s->interface_removed)
2348                         return 1;
2349         return 0;
2350 }
2351 #endif /* CONFIG_TERMINATE_ONLASTIF */
2352
2353
2354 static void
2355 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2356                                       union wpa_event_data *data)
2357 {
2358         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2359                 return;
2360
2361         switch (data->interface_status.ievent) {
2362         case EVENT_INTERFACE_ADDED:
2363                 if (!wpa_s->interface_removed)
2364                         break;
2365                 wpa_s->interface_removed = 0;
2366                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2367                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2368                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2369                                 "driver after interface was added");
2370                 }
2371                 break;
2372         case EVENT_INTERFACE_REMOVED:
2373                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2374                 wpa_s->interface_removed = 1;
2375                 wpa_supplicant_mark_disassoc(wpa_s);
2376                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2377                 l2_packet_deinit(wpa_s->l2);
2378                 wpa_s->l2 = NULL;
2379 #ifdef CONFIG_TERMINATE_ONLASTIF
2380                 /* check if last interface */
2381                 if (!any_interfaces(wpa_s->global->ifaces))
2382                         eloop_terminate();
2383 #endif /* CONFIG_TERMINATE_ONLASTIF */
2384                 break;
2385         }
2386 }
2387
2388
2389 #ifdef CONFIG_PEERKEY
2390 static void
2391 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2392                               union wpa_event_data *data)
2393 {
2394         if (data == NULL)
2395                 return;
2396         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2397 }
2398 #endif /* CONFIG_PEERKEY */
2399
2400
2401 #ifdef CONFIG_TDLS
2402 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2403                                       union wpa_event_data *data)
2404 {
2405         if (data == NULL)
2406                 return;
2407         switch (data->tdls.oper) {
2408         case TDLS_REQUEST_SETUP:
2409                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2410                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2411                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2412                 else
2413                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2414                 break;
2415         case TDLS_REQUEST_TEARDOWN:
2416                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2417                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2418                                                data->tdls.reason_code);
2419                 else
2420                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2421                                           data->tdls.peer);
2422                 break;
2423         }
2424 }
2425 #endif /* CONFIG_TDLS */
2426
2427
2428 #ifdef CONFIG_WNM
2429 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2430                                      union wpa_event_data *data)
2431 {
2432         if (data == NULL)
2433                 return;
2434         switch (data->wnm.oper) {
2435         case WNM_OPER_SLEEP:
2436                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2437                            "(action=%d, intval=%d)",
2438                            data->wnm.sleep_action, data->wnm.sleep_intval);
2439                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2440                                              data->wnm.sleep_intval, NULL);
2441                 break;
2442         }
2443 }
2444 #endif /* CONFIG_WNM */
2445
2446
2447 #ifdef CONFIG_IEEE80211R
2448 static void
2449 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2450                                  union wpa_event_data *data)
2451 {
2452         if (data == NULL)
2453                 return;
2454
2455         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2456                                     data->ft_ies.ies_len,
2457                                     data->ft_ies.ft_action,
2458                                     data->ft_ies.target_ap,
2459                                     data->ft_ies.ric_ies,
2460                                     data->ft_ies.ric_ies_len) < 0) {
2461                 /* TODO: prevent MLME/driver from trying to associate? */
2462         }
2463 }
2464 #endif /* CONFIG_IEEE80211R */
2465
2466
2467 #ifdef CONFIG_IBSS_RSN
2468 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2469                                                 union wpa_event_data *data)
2470 {
2471         struct wpa_ssid *ssid;
2472         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2473                 return;
2474         if (data == NULL)
2475                 return;
2476         ssid = wpa_s->current_ssid;
2477         if (ssid == NULL)
2478                 return;
2479         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2480                 return;
2481
2482         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2483 }
2484
2485
2486 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2487                                            union wpa_event_data *data)
2488 {
2489         struct wpa_ssid *ssid = wpa_s->current_ssid;
2490
2491         if (ssid == NULL)
2492                 return;
2493
2494         /* check if the ssid is correctly configured as IBSS/RSN */
2495         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2496                 return;
2497
2498         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2499                              data->rx_mgmt.frame_len);
2500 }
2501 #endif /* CONFIG_IBSS_RSN */
2502
2503
2504 #ifdef CONFIG_IEEE80211R
2505 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2506                          size_t len)
2507 {
2508         const u8 *sta_addr, *target_ap_addr;
2509         u16 status;
2510
2511         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2512         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2513                 return; /* only SME case supported for now */
2514         if (len < 1 + 2 * ETH_ALEN + 2)
2515                 return;
2516         if (data[0] != 2)
2517                 return; /* Only FT Action Response is supported for now */
2518         sta_addr = data + 1;
2519         target_ap_addr = data + 1 + ETH_ALEN;
2520         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2521         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2522                 MACSTR " TargetAP " MACSTR " status %u",
2523                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2524
2525         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2526                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2527                         " in FT Action Response", MAC2STR(sta_addr));
2528                 return;
2529         }
2530
2531         if (status) {
2532                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2533                         "failure (status code %d)", status);
2534                 /* TODO: report error to FT code(?) */
2535                 return;
2536         }
2537
2538         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2539                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2540                                     target_ap_addr, NULL, 0) < 0)
2541                 return;
2542
2543 #ifdef CONFIG_SME
2544         {
2545                 struct wpa_bss *bss;
2546                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2547                 if (bss)
2548                         wpa_s->sme.freq = bss->freq;
2549                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2550                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2551                               WLAN_AUTH_FT);
2552         }
2553 #endif /* CONFIG_SME */
2554 }
2555 #endif /* CONFIG_IEEE80211R */
2556
2557
2558 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2559                                                struct unprot_deauth *e)
2560 {
2561 #ifdef CONFIG_IEEE80211W
2562         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2563                    "dropped: " MACSTR " -> " MACSTR
2564                    " (reason code %u)",
2565                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2566         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2567 #endif /* CONFIG_IEEE80211W */
2568 }
2569
2570
2571 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2572                                                  struct unprot_disassoc *e)
2573 {
2574 #ifdef CONFIG_IEEE80211W
2575         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2576                    "dropped: " MACSTR " -> " MACSTR
2577                    " (reason code %u)",
2578                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2579         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2580 #endif /* CONFIG_IEEE80211W */
2581 }
2582
2583
2584 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2585                                   u16 reason_code, int locally_generated,
2586                                   const u8 *ie, size_t ie_len, int deauth)
2587 {
2588 #ifdef CONFIG_AP
2589         if (wpa_s->ap_iface && addr) {
2590                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2591                 return;
2592         }
2593
2594         if (wpa_s->ap_iface) {
2595                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2596                 return;
2597         }
2598 #endif /* CONFIG_AP */
2599
2600         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2601
2602         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2603               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2604                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2605                eapol_sm_failed(wpa_s->eapol))) &&
2606              !wpa_s->eap_expected_failure))
2607                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2608
2609 #ifdef CONFIG_P2P
2610         if (deauth && reason_code > 0) {
2611                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2612                                           locally_generated) > 0) {
2613                         /*
2614                          * The interface was removed, so cannot continue
2615                          * processing any additional operations after this.
2616                          */
2617                         return;
2618                 }
2619         }
2620 #endif /* CONFIG_P2P */
2621
2622         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2623                                              locally_generated);
2624 }
2625
2626
2627 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2628                                 struct disassoc_info *info)
2629 {
2630         u16 reason_code = 0;
2631         int locally_generated = 0;
2632         const u8 *addr = NULL;
2633         const u8 *ie = NULL;
2634         size_t ie_len = 0;
2635
2636         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2637
2638         if (info) {
2639                 addr = info->addr;
2640                 ie = info->ie;
2641                 ie_len = info->ie_len;
2642                 reason_code = info->reason_code;
2643                 locally_generated = info->locally_generated;
2644                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2645                         locally_generated ? " (locally generated)" : "");
2646                 if (addr)
2647                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2648                                 MAC2STR(addr));
2649                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2650                             ie, ie_len);
2651         }
2652
2653 #ifdef CONFIG_AP
2654         if (wpa_s->ap_iface && info && info->addr) {
2655                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2656                 return;
2657         }
2658
2659         if (wpa_s->ap_iface) {
2660                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2661                 return;
2662         }
2663 #endif /* CONFIG_AP */
2664
2665 #ifdef CONFIG_P2P
2666         if (info) {
2667                 wpas_p2p_disassoc_notif(
2668                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2669                         locally_generated);
2670         }
2671 #endif /* CONFIG_P2P */
2672
2673         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2674                 sme_event_disassoc(wpa_s, info);
2675
2676         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2677                               ie, ie_len, 0);
2678 }
2679
2680
2681 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2682                               struct deauth_info *info)
2683 {
2684         u16 reason_code = 0;
2685         int locally_generated = 0;
2686         const u8 *addr = NULL;
2687         const u8 *ie = NULL;
2688         size_t ie_len = 0;
2689
2690         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2691
2692         if (info) {
2693                 addr = info->addr;
2694                 ie = info->ie;
2695                 ie_len = info->ie_len;
2696                 reason_code = info->reason_code;
2697                 locally_generated = info->locally_generated;
2698                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2699                         reason_code,
2700                         locally_generated ? " (locally generated)" : "");
2701                 if (addr) {
2702                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2703                                 MAC2STR(addr));
2704                 }
2705                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2706                             ie, ie_len);
2707         }
2708
2709         wpa_reset_ft_completed(wpa_s->wpa);
2710
2711         wpas_event_disconnect(wpa_s, addr, reason_code,
2712                               locally_generated, ie, ie_len, 1);
2713 }
2714
2715
2716 static const char * reg_init_str(enum reg_change_initiator init)
2717 {
2718         switch (init) {
2719         case REGDOM_SET_BY_CORE:
2720                 return "CORE";
2721         case REGDOM_SET_BY_USER:
2722                 return "USER";
2723         case REGDOM_SET_BY_DRIVER:
2724                 return "DRIVER";
2725         case REGDOM_SET_BY_COUNTRY_IE:
2726                 return "COUNTRY_IE";
2727         case REGDOM_BEACON_HINT:
2728                 return "BEACON_HINT";
2729         }
2730         return "?";
2731 }
2732
2733
2734 static const char * reg_type_str(enum reg_type type)
2735 {
2736         switch (type) {
2737         case REGDOM_TYPE_UNKNOWN:
2738                 return "UNKNOWN";
2739         case REGDOM_TYPE_COUNTRY:
2740                 return "COUNTRY";
2741         case REGDOM_TYPE_WORLD:
2742                 return "WORLD";
2743         case REGDOM_TYPE_CUSTOM_WORLD:
2744                 return "CUSTOM_WORLD";
2745         case REGDOM_TYPE_INTERSECTION:
2746                 return "INTERSECTION";
2747         }
2748         return "?";
2749 }
2750
2751
2752 static void wpa_supplicant_update_channel_list(
2753         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
2754 {
2755         struct wpa_supplicant *ifs;
2756
2757         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
2758                 reg_init_str(info->type), reg_type_str(info->type),
2759                 info->alpha2[0] ? " alpha2=" : "",
2760                 info->alpha2[0] ? info->alpha2 : "");
2761
2762         if (wpa_s->drv_priv == NULL)
2763                 return; /* Ignore event during drv initialization */
2764
2765         free_hw_features(wpa_s);
2766         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2767                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2768
2769 #ifdef CONFIG_P2P
2770         wpas_p2p_update_channel_list(wpa_s);
2771 #endif /* CONFIG_P2P */
2772
2773         /*
2774          * Check other interfaces to see if they share the same radio. If
2775          * so, they get updated with this same hw mode info.
2776          */
2777         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2778                          radio_list) {
2779                 if (ifs != wpa_s) {
2780                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2781                                    ifs->ifname);
2782                         free_hw_features(ifs);
2783                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2784                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2785                 }
2786         }
2787 }
2788
2789
2790 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2791                                       const u8 *frame, size_t len, int freq)
2792 {
2793         const struct ieee80211_mgmt *mgmt;
2794         const u8 *payload;
2795         size_t plen;
2796         u8 category;
2797
2798         if (len < IEEE80211_HDRLEN + 2)
2799                 return;
2800
2801         mgmt = (const struct ieee80211_mgmt *) frame;
2802         payload = frame + IEEE80211_HDRLEN;
2803         category = *payload++;
2804         plen = len - IEEE80211_HDRLEN - 1;
2805
2806         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2807                 " Category=%u DataLen=%d freq=%d MHz",
2808                 MAC2STR(mgmt->sa), category, (int) plen, freq);
2809
2810 #ifdef CONFIG_IEEE80211R
2811         if (category == WLAN_ACTION_FT) {
2812                 ft_rx_action(wpa_s, payload, plen);
2813                 return;
2814         }
2815 #endif /* CONFIG_IEEE80211R */
2816
2817 #ifdef CONFIG_IEEE80211W
2818 #ifdef CONFIG_SME
2819         if (category == WLAN_ACTION_SA_QUERY) {
2820                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2821                 return;
2822         }
2823 #endif /* CONFIG_SME */
2824 #endif /* CONFIG_IEEE80211W */
2825
2826 #ifdef CONFIG_WNM
2827         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2828                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2829                 return;
2830         }
2831 #endif /* CONFIG_WNM */
2832
2833 #ifdef CONFIG_GAS
2834         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2835              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2836             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2837                          mgmt->u.action.category,
2838                          payload, plen, freq) == 0)
2839                 return;
2840 #endif /* CONFIG_GAS */
2841
2842 #ifdef CONFIG_TDLS
2843         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2844             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2845                 wpa_dbg(wpa_s, MSG_DEBUG,
2846                         "TDLS: Received Discovery Response from " MACSTR,
2847                         MAC2STR(mgmt->sa));
2848                 return;
2849         }
2850 #endif /* CONFIG_TDLS */
2851
2852 #ifdef CONFIG_INTERWORKING
2853         if (category == WLAN_ACTION_QOS && plen >= 1 &&
2854             payload[0] == QOS_QOS_MAP_CONFIG) {
2855                 const u8 *pos = payload + 1;
2856                 size_t qlen = plen - 1;
2857                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2858                         MACSTR, MAC2STR(mgmt->sa));
2859                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2860                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2861                     pos[1] <= qlen - 2 && pos[1] >= 16)
2862                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2863                 return;
2864         }
2865 #endif /* CONFIG_INTERWORKING */
2866
2867 #ifdef CONFIG_P2P
2868         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2869                            category, payload, plen, freq);
2870 #endif /* CONFIG_P2P */
2871 }
2872
2873
2874 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2875                                              union wpa_event_data *event)
2876 {
2877 #ifdef CONFIG_P2P
2878         struct wpa_supplicant *ifs;
2879 #endif /* CONFIG_P2P */
2880         struct wpa_freq_range_list *list;
2881         char *str = NULL;
2882
2883         list = &event->freq_range;
2884
2885         if (list->num)
2886                 str = freq_range_list_str(list);
2887         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2888                 str ? str : "");
2889
2890 #ifdef CONFIG_P2P
2891         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2892                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2893                         __func__);
2894         } else {
2895                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2896                 wpas_p2p_update_channel_list(wpa_s);
2897         }
2898
2899         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2900                 int freq;
2901                 if (!ifs->current_ssid ||
2902                     !ifs->current_ssid->p2p_group ||
2903                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
2904                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
2905                         continue;
2906
2907                 freq = ifs->current_ssid->frequency;
2908                 if (!freq_range_list_includes(list, freq)) {
2909                         wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
2910                                 freq);
2911                         continue;
2912                 }
2913
2914                 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
2915                         freq);
2916                 /* TODO: Consider using CSA or removing the group within
2917                  * wpa_supplicant */
2918                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
2919         }
2920 #endif /* CONFIG_P2P */
2921
2922         os_free(str);
2923 }
2924
2925
2926 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2927                           union wpa_event_data *data)
2928 {
2929         struct wpa_supplicant *wpa_s = ctx;
2930
2931         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2932             event != EVENT_INTERFACE_ENABLED &&
2933             event != EVENT_INTERFACE_STATUS &&
2934             event != EVENT_SCHED_SCAN_STOPPED) {
2935                 wpa_dbg(wpa_s, MSG_DEBUG,
2936                         "Ignore event %s (%d) while interface is disabled",
2937                         event_to_string(event), event);
2938                 return;
2939         }
2940
2941 #ifndef CONFIG_NO_STDOUT_DEBUG
2942 {
2943         int level = MSG_DEBUG;
2944
2945         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2946                 const struct ieee80211_hdr *hdr;
2947                 u16 fc;
2948                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2949                 fc = le_to_host16(hdr->frame_control);
2950                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2951                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2952                         level = MSG_EXCESSIVE;
2953         }
2954
2955         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2956                 event_to_string(event), event);
2957 }
2958 #endif /* CONFIG_NO_STDOUT_DEBUG */
2959
2960         switch (event) {
2961         case EVENT_AUTH:
2962                 sme_event_auth(wpa_s, data);
2963                 break;
2964         case EVENT_ASSOC:
2965                 wpa_supplicant_event_assoc(wpa_s, data);
2966                 break;
2967         case EVENT_DISASSOC:
2968                 wpas_event_disassoc(wpa_s,
2969                                     data ? &data->disassoc_info : NULL);
2970                 break;
2971         case EVENT_DEAUTH:
2972                 wpas_event_deauth(wpa_s,
2973                                   data ? &data->deauth_info : NULL);
2974                 break;
2975         case EVENT_MICHAEL_MIC_FAILURE:
2976                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2977                 break;
2978 #ifndef CONFIG_NO_SCAN_PROCESSING
2979         case EVENT_SCAN_STARTED:
2980                 os_get_reltime(&wpa_s->scan_start_time);
2981                 if (wpa_s->own_scan_requested) {
2982                         struct os_reltime diff;
2983
2984                         os_reltime_sub(&wpa_s->scan_start_time,
2985                                        &wpa_s->scan_trigger_time, &diff);
2986                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
2987                                 diff.sec, diff.usec);
2988                         wpa_s->own_scan_requested = 0;
2989                         wpa_s->own_scan_running = 1;
2990                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
2991                             wpa_s->manual_scan_use_id) {
2992                                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED "id=%u",
2993                                         wpa_s->manual_scan_id);
2994                         } else {
2995                                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
2996                         }
2997                 } else {
2998                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
2999                         wpa_s->external_scan_running = 1;
3000                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3001                 }
3002                 break;
3003         case EVENT_SCAN_RESULTS:
3004                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
3005                         struct os_reltime now, diff;
3006                         os_get_reltime(&now);
3007                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3008                         wpa_s->scan_start_time.sec = 0;
3009                         wpa_s->scan_start_time.usec = 0;
3010                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3011                                 diff.sec, diff.usec);
3012                 }
3013                 wpa_supplicant_event_scan_results(wpa_s, data);
3014                 wpa_s->own_scan_running = 0;
3015                 wpa_s->external_scan_running = 0;
3016                 radio_work_check_next(wpa_s);
3017                 break;
3018 #endif /* CONFIG_NO_SCAN_PROCESSING */
3019         case EVENT_ASSOCINFO:
3020                 wpa_supplicant_event_associnfo(wpa_s, data);
3021                 break;
3022         case EVENT_INTERFACE_STATUS:
3023                 wpa_supplicant_event_interface_status(wpa_s, data);
3024                 break;
3025         case EVENT_PMKID_CANDIDATE:
3026                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3027                 break;
3028 #ifdef CONFIG_PEERKEY
3029         case EVENT_STKSTART:
3030                 wpa_supplicant_event_stkstart(wpa_s, data);
3031                 break;
3032 #endif /* CONFIG_PEERKEY */
3033 #ifdef CONFIG_TDLS
3034         case EVENT_TDLS:
3035                 wpa_supplicant_event_tdls(wpa_s, data);
3036                 break;
3037 #endif /* CONFIG_TDLS */
3038 #ifdef CONFIG_WNM
3039         case EVENT_WNM:
3040                 wpa_supplicant_event_wnm(wpa_s, data);
3041                 break;
3042 #endif /* CONFIG_WNM */
3043 #ifdef CONFIG_IEEE80211R
3044         case EVENT_FT_RESPONSE:
3045                 wpa_supplicant_event_ft_response(wpa_s, data);
3046                 break;
3047 #endif /* CONFIG_IEEE80211R */
3048 #ifdef CONFIG_IBSS_RSN
3049         case EVENT_IBSS_RSN_START:
3050                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3051                 break;
3052 #endif /* CONFIG_IBSS_RSN */
3053         case EVENT_ASSOC_REJECT:
3054                 if (data->assoc_reject.bssid)
3055                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3056                                 "bssid=" MACSTR " status_code=%u",
3057                                 MAC2STR(data->assoc_reject.bssid),
3058                                 data->assoc_reject.status_code);
3059                 else
3060                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3061                                 "status_code=%u",
3062                                 data->assoc_reject.status_code);
3063                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3064                         sme_event_assoc_reject(wpa_s, data);
3065                 else {
3066                         const u8 *bssid = data->assoc_reject.bssid;
3067                         if (bssid == NULL || is_zero_ether_addr(bssid))
3068                                 bssid = wpa_s->pending_bssid;
3069                         wpas_connection_failed(wpa_s, bssid);
3070                         wpa_supplicant_mark_disassoc(wpa_s);
3071                 }
3072                 break;
3073         case EVENT_AUTH_TIMED_OUT:
3074                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3075                         sme_event_auth_timed_out(wpa_s, data);
3076                 break;
3077         case EVENT_ASSOC_TIMED_OUT:
3078                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3079                         sme_event_assoc_timed_out(wpa_s, data);
3080                 break;
3081         case EVENT_TX_STATUS:
3082                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3083                         " type=%d stype=%d",
3084                         MAC2STR(data->tx_status.dst),
3085                         data->tx_status.type, data->tx_status.stype);
3086 #ifdef CONFIG_AP
3087                 if (wpa_s->ap_iface == NULL) {
3088 #ifdef CONFIG_OFFCHANNEL
3089                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3090                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3091                                 offchannel_send_action_tx_status(
3092                                         wpa_s, data->tx_status.dst,
3093                                         data->tx_status.data,
3094                                         data->tx_status.data_len,
3095                                         data->tx_status.ack ?
3096                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3097                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3098 #endif /* CONFIG_OFFCHANNEL */
3099                         break;
3100                 }
3101 #endif /* CONFIG_AP */
3102 #ifdef CONFIG_OFFCHANNEL
3103                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3104                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3105                 /*
3106                  * Catch TX status events for Action frames we sent via group
3107                  * interface in GO mode.
3108                  */
3109                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3110                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3111                     os_memcmp(wpa_s->parent->pending_action_dst,
3112                               data->tx_status.dst, ETH_ALEN) == 0) {
3113                         offchannel_send_action_tx_status(
3114                                 wpa_s->parent, data->tx_status.dst,
3115                                 data->tx_status.data,
3116                                 data->tx_status.data_len,
3117                                 data->tx_status.ack ?
3118                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3119                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3120                         break;
3121                 }
3122 #endif /* CONFIG_OFFCHANNEL */
3123 #ifdef CONFIG_AP
3124                 switch (data->tx_status.type) {
3125                 case WLAN_FC_TYPE_MGMT:
3126                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3127                                       data->tx_status.data_len,
3128                                       data->tx_status.stype,
3129                                       data->tx_status.ack);
3130                         break;
3131                 case WLAN_FC_TYPE_DATA:
3132                         ap_tx_status(wpa_s, data->tx_status.dst,
3133                                      data->tx_status.data,
3134                                      data->tx_status.data_len,
3135                                      data->tx_status.ack);
3136                         break;
3137                 }
3138 #endif /* CONFIG_AP */
3139                 break;
3140 #ifdef CONFIG_AP
3141         case EVENT_EAPOL_TX_STATUS:
3142                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3143                                    data->eapol_tx_status.data,
3144                                    data->eapol_tx_status.data_len,
3145                                    data->eapol_tx_status.ack);
3146                 break;
3147         case EVENT_DRIVER_CLIENT_POLL_OK:
3148                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3149                 break;
3150         case EVENT_RX_FROM_UNKNOWN:
3151                 if (wpa_s->ap_iface == NULL)
3152                         break;
3153                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3154                                        data->rx_from_unknown.wds);
3155                 break;
3156         case EVENT_CH_SWITCH:
3157                 if (!data)
3158                         break;
3159                 if (!wpa_s->ap_iface) {
3160                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3161                                 "event in non-AP mode");
3162                         break;
3163                 }
3164
3165                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3166                                   data->ch_switch.ht_enabled,
3167                                   data->ch_switch.ch_offset,
3168                                   data->ch_switch.ch_width,
3169                                   data->ch_switch.cf1,
3170                                   data->ch_switch.cf2);
3171                 break;
3172 #endif /* CONFIG_AP */
3173         case EVENT_RX_MGMT: {
3174                 u16 fc, stype;
3175                 const struct ieee80211_mgmt *mgmt;
3176
3177 #ifdef CONFIG_TESTING_OPTIONS
3178                 if (wpa_s->ext_mgmt_frame_handling) {
3179                         struct rx_mgmt *rx = &data->rx_mgmt;
3180                         size_t hex_len = 2 * rx->frame_len + 1;
3181                         char *hex = os_malloc(hex_len);
3182                         if (hex) {
3183                                 wpa_snprintf_hex(hex, hex_len,
3184                                                  rx->frame, rx->frame_len);
3185                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3186                                         rx->freq, rx->datarate, rx->ssi_signal,
3187                                         hex);
3188                                 os_free(hex);
3189                         }
3190                         break;
3191                 }
3192 #endif /* CONFIG_TESTING_OPTIONS */
3193
3194                 mgmt = (const struct ieee80211_mgmt *)
3195                         data->rx_mgmt.frame;
3196                 fc = le_to_host16(mgmt->frame_control);
3197                 stype = WLAN_FC_GET_STYPE(fc);
3198
3199 #ifdef CONFIG_AP
3200                 if (wpa_s->ap_iface == NULL) {
3201 #endif /* CONFIG_AP */
3202 #ifdef CONFIG_P2P
3203                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3204                             data->rx_mgmt.frame_len > 24) {
3205                                 const u8 *src = mgmt->sa;
3206                                 const u8 *ie = mgmt->u.probe_req.variable;
3207                                 size_t ie_len = data->rx_mgmt.frame_len -
3208                                         (mgmt->u.probe_req.variable -
3209                                          data->rx_mgmt.frame);
3210                                 wpas_p2p_probe_req_rx(
3211                                         wpa_s, src, mgmt->da,
3212                                         mgmt->bssid, ie, ie_len,
3213                                         data->rx_mgmt.ssi_signal);
3214                                 break;
3215                         }
3216 #endif /* CONFIG_P2P */
3217 #ifdef CONFIG_IBSS_RSN
3218                         if (stype == WLAN_FC_STYPE_AUTH &&
3219                             data->rx_mgmt.frame_len >= 30) {
3220                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3221                                 break;
3222                         }
3223 #endif /* CONFIG_IBSS_RSN */
3224
3225                         if (stype == WLAN_FC_STYPE_ACTION) {
3226                                 wpas_event_rx_mgmt_action(
3227                                         wpa_s, data->rx_mgmt.frame,
3228                                         data->rx_mgmt.frame_len,
3229                                         data->rx_mgmt.freq);
3230                                 break;
3231                         }
3232
3233                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3234                                 "management frame in non-AP mode");
3235                         break;
3236 #ifdef CONFIG_AP
3237                 }
3238
3239                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3240                     data->rx_mgmt.frame_len > 24) {
3241                         const u8 *ie = mgmt->u.probe_req.variable;
3242                         size_t ie_len = data->rx_mgmt.frame_len -
3243                                 (mgmt->u.probe_req.variable -
3244                                  data->rx_mgmt.frame);
3245
3246                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3247                                          mgmt->bssid, ie, ie_len,
3248                                          data->rx_mgmt.ssi_signal);
3249                 }
3250
3251                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3252 #endif /* CONFIG_AP */
3253                 break;
3254                 }
3255         case EVENT_RX_PROBE_REQ:
3256                 if (data->rx_probe_req.sa == NULL ||
3257                     data->rx_probe_req.ie == NULL)
3258                         break;
3259 #ifdef CONFIG_AP
3260                 if (wpa_s->ap_iface) {
3261                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3262                                              data->rx_probe_req.sa,
3263                                              data->rx_probe_req.da,
3264                                              data->rx_probe_req.bssid,
3265                                              data->rx_probe_req.ie,
3266                                              data->rx_probe_req.ie_len,
3267                                              data->rx_probe_req.ssi_signal);
3268                         break;
3269                 }
3270 #endif /* CONFIG_AP */
3271 #ifdef CONFIG_P2P
3272                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3273                                       data->rx_probe_req.da,
3274                                       data->rx_probe_req.bssid,
3275                                       data->rx_probe_req.ie,
3276                                       data->rx_probe_req.ie_len,
3277                                       data->rx_probe_req.ssi_signal);
3278 #endif /* CONFIG_P2P */
3279                 break;
3280         case EVENT_REMAIN_ON_CHANNEL:
3281 #ifdef CONFIG_OFFCHANNEL
3282                 offchannel_remain_on_channel_cb(
3283                         wpa_s, data->remain_on_channel.freq,
3284                         data->remain_on_channel.duration);
3285 #endif /* CONFIG_OFFCHANNEL */
3286 #ifdef CONFIG_P2P
3287                 wpas_p2p_remain_on_channel_cb(
3288                         wpa_s, data->remain_on_channel.freq,
3289                         data->remain_on_channel.duration);
3290 #endif /* CONFIG_P2P */
3291                 break;
3292         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3293 #ifdef CONFIG_OFFCHANNEL
3294                 offchannel_cancel_remain_on_channel_cb(
3295                         wpa_s, data->remain_on_channel.freq);
3296 #endif /* CONFIG_OFFCHANNEL */
3297 #ifdef CONFIG_P2P
3298                 wpas_p2p_cancel_remain_on_channel_cb(
3299                         wpa_s, data->remain_on_channel.freq);
3300 #endif /* CONFIG_P2P */
3301                 break;
3302         case EVENT_EAPOL_RX:
3303                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3304                                         data->eapol_rx.data,
3305                                         data->eapol_rx.data_len);
3306                 break;
3307         case EVENT_SIGNAL_CHANGE:
3308                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3309                         "above=%d signal=%d noise=%d txrate=%d",
3310                         data->signal_change.above_threshold,
3311                         data->signal_change.current_signal,
3312                         data->signal_change.current_noise,
3313                         data->signal_change.current_txrate);
3314                 bgscan_notify_signal_change(
3315                         wpa_s, data->signal_change.above_threshold,
3316                         data->signal_change.current_signal,
3317                         data->signal_change.current_noise,
3318                         data->signal_change.current_txrate);
3319                 break;
3320         case EVENT_INTERFACE_ENABLED:
3321                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3322                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3323                         wpa_supplicant_update_mac_addr(wpa_s);
3324                         if (wpa_s->p2p_mgmt) {
3325                                 wpa_supplicant_set_state(wpa_s,
3326                                                          WPA_DISCONNECTED);
3327                                 break;
3328                         }
3329
3330 #ifdef CONFIG_AP
3331                         if (!wpa_s->ap_iface) {
3332                                 wpa_supplicant_set_state(wpa_s,
3333                                                          WPA_DISCONNECTED);
3334                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3335                         } else
3336                                 wpa_supplicant_set_state(wpa_s,
3337                                                          WPA_COMPLETED);
3338 #else /* CONFIG_AP */
3339                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3340                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3341 #endif /* CONFIG_AP */
3342                 }
3343                 break;
3344         case EVENT_INTERFACE_DISABLED:
3345                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3346 #ifdef CONFIG_P2P
3347                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3348                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3349                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3350                         /*
3351                          * The interface was externally disabled. Remove
3352                          * it assuming an external entity will start a
3353                          * new session if needed.
3354                          */
3355                         wpas_p2p_disconnect(wpa_s);
3356                         break;
3357                 }
3358                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3359                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3360                         /* This radio work will be cancelled, so clear P2P
3361                          * state as well.
3362                          */
3363                         p2p_stop_find(wpa_s->global->p2p);
3364                 }
3365 #endif /* CONFIG_P2P */
3366
3367                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3368                         /*
3369                          * Indicate disconnection to keep ctrl_iface events
3370                          * consistent.
3371                          */
3372                         wpa_supplicant_event_disassoc(
3373                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3374                 }
3375                 wpa_supplicant_mark_disassoc(wpa_s);
3376                 radio_remove_works(wpa_s, NULL, 0);
3377
3378                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3379                 break;
3380         case EVENT_CHANNEL_LIST_CHANGED:
3381                 wpa_supplicant_update_channel_list(
3382                         wpa_s, &data->channel_list_changed);
3383                 break;
3384         case EVENT_INTERFACE_UNAVAILABLE:
3385 #ifdef CONFIG_P2P
3386                 wpas_p2p_interface_unavailable(wpa_s);
3387 #endif /* CONFIG_P2P */
3388                 break;
3389         case EVENT_BEST_CHANNEL:
3390                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3391                         "(%d %d %d)",
3392                         data->best_chan.freq_24, data->best_chan.freq_5,
3393                         data->best_chan.freq_overall);
3394                 wpa_s->best_24_freq = data->best_chan.freq_24;
3395                 wpa_s->best_5_freq = data->best_chan.freq_5;
3396                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3397 #ifdef CONFIG_P2P
3398                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3399                                               data->best_chan.freq_5,
3400                                               data->best_chan.freq_overall);
3401 #endif /* CONFIG_P2P */
3402                 break;
3403         case EVENT_UNPROT_DEAUTH:
3404                 wpa_supplicant_event_unprot_deauth(wpa_s,
3405                                                    &data->unprot_deauth);
3406                 break;
3407         case EVENT_UNPROT_DISASSOC:
3408                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3409                                                      &data->unprot_disassoc);
3410                 break;
3411         case EVENT_STATION_LOW_ACK:
3412 #ifdef CONFIG_AP
3413                 if (wpa_s->ap_iface && data)
3414                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3415                                                   data->low_ack.addr);
3416 #endif /* CONFIG_AP */
3417 #ifdef CONFIG_TDLS
3418                 if (data)
3419                         wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
3420 #endif /* CONFIG_TDLS */
3421                 break;
3422         case EVENT_IBSS_PEER_LOST:
3423 #ifdef CONFIG_IBSS_RSN
3424                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3425 #endif /* CONFIG_IBSS_RSN */
3426                 break;
3427         case EVENT_DRIVER_GTK_REKEY:
3428                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3429                               wpa_s->bssid, ETH_ALEN))
3430                         break;
3431                 if (!wpa_s->wpa)
3432                         break;
3433                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3434                                          data->driver_gtk_rekey.replay_ctr);
3435                 break;
3436         case EVENT_SCHED_SCAN_STOPPED:
3437                 wpa_s->pno = 0;
3438                 wpa_s->sched_scanning = 0;
3439                 wpa_supplicant_notify_scanning(wpa_s, 0);
3440
3441                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3442                         break;
3443
3444                 /*
3445                  * Start a new sched scan to continue searching for more SSIDs
3446                  * either if timed out or PNO schedule scan is pending.
3447                  */
3448                 if (wpa_s->sched_scan_timed_out) {
3449                         wpa_supplicant_req_sched_scan(wpa_s);
3450                 } else if (wpa_s->pno_sched_pending) {
3451                         wpa_s->pno_sched_pending = 0;
3452                         wpas_start_pno(wpa_s);
3453                 }
3454
3455                 break;
3456         case EVENT_WPS_BUTTON_PUSHED:
3457 #ifdef CONFIG_WPS
3458                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3459 #endif /* CONFIG_WPS */
3460                 break;
3461         case EVENT_AVOID_FREQUENCIES:
3462                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3463                 break;
3464         case EVENT_CONNECT_FAILED_REASON:
3465 #ifdef CONFIG_AP
3466                 if (!wpa_s->ap_iface || !data)
3467                         break;
3468                 hostapd_event_connect_failed_reason(
3469                         wpa_s->ap_iface->bss[0],
3470                         data->connect_failed_reason.addr,
3471                         data->connect_failed_reason.code);
3472 #endif /* CONFIG_AP */
3473                 break;
3474         default:
3475                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3476                 break;
3477         }
3478 }