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 #include "mesh.h"
  46 #include "mesh_mpm.h"
  47 #include "wmm_ac.h"
  48
  49
  50 #ifndef CONFIG_NO_SCAN_PROCESSING
  51 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  52                                               int new_scan, int own_request);
  53 #endif /* CONFIG_NO_SCAN_PROCESSING */
  54
  55
  56 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  57                               struct wpa_ssid *ssid)
  58 {
  59         struct os_reltime now;
  60
  61         if (ssid == NULL || ssid->disabled_until.sec == 0)
  62                 return 0;
  63
  64         os_get_reltime(&now);
  65         if (ssid->disabled_until.sec > now.sec)
  66                 return ssid->disabled_until.sec - now.sec;
  67
  68         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  69
  70         return 0;
  71 }
  72
  73
  74 static struct wpa_bss * wpa_supplicant_get_new_bss(
  75         struct wpa_supplicant *wpa_s, const u8 *bssid)
  76 {
  77         struct wpa_bss *bss = NULL;
  78         struct wpa_ssid *ssid = wpa_s->current_ssid;
  79
  80         if (ssid->ssid_len > 0)
  81                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
  82         if (!bss)
  83                 bss = wpa_bss_get_bssid(wpa_s, bssid);
  84
  85         return bss;
  86 }
  87
  88
  89 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
  90 {
  91         struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
  92
  93         if (!bss) {
  94                 wpa_supplicant_update_scan_results(wpa_s);
  95
  96                 /* Get the BSS from the new scan results */
  97                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
  98         }
  99
 100         if (bss)
 101                 wpa_s->current_bss = bss;
 102 }
 103
 104
 105 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
 106 {
 107         struct wpa_ssid *ssid, *old_ssid;
 108         int res;
 109
 110         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
 111                 wpa_supplicant_update_current_bss(wpa_s);
 112                 return 0;
 113         }
 114
 115         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
 116                 "information");
 117         ssid = wpa_supplicant_get_ssid(wpa_s);
 118         if (ssid == NULL) {
 119                 wpa_msg(wpa_s, MSG_INFO,
 120                         "No network configuration found for the current AP");
 121                 return -1;
 122         }
 123
 124         if (wpas_network_disabled(wpa_s, ssid)) {
 125                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 126                 return -1;
 127         }
 128
 129         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 130             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 131                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 132                 return -1;
 133         }
 134
 135         res = wpas_temp_disabled(wpa_s, ssid);
 136         if (res > 0) {
 137                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 138                         "disabled for %d second(s)", res);
 139                 return -1;
 140         }
 141
 142         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 143                 "current AP");
 144         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 145                 u8 wpa_ie[80];
 146                 size_t wpa_ie_len = sizeof(wpa_ie);
 147                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 148                                               wpa_ie, &wpa_ie_len) < 0)
 149                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 150         } else {
 151                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 152         }
 153
 154         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 155                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 156         old_ssid = wpa_s->current_ssid;
 157         wpa_s->current_ssid = ssid;
 158
 159         wpa_supplicant_update_current_bss(wpa_s);
 160
 161         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 162         wpa_supplicant_initiate_eapol(wpa_s);
 163         if (old_ssid != wpa_s->current_ssid)
 164                 wpas_notify_network_changed(wpa_s);
 165
 166         return 0;
 167 }
 168
 169
 170 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 171 {
 172         struct wpa_supplicant *wpa_s = eloop_ctx;
 173
 174         if (wpa_s->countermeasures) {
 175                 wpa_s->countermeasures = 0;
 176                 wpa_drv_set_countermeasures(wpa_s, 0);
 177                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 178                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 179         }
 180 }
 181
 182
 183 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 184 {
 185         int bssid_changed;
 186
 187         wnm_bss_keep_alive_deinit(wpa_s);
 188
 189 #ifdef CONFIG_IBSS_RSN
 190         ibss_rsn_deinit(wpa_s->ibss_rsn);
 191         wpa_s->ibss_rsn = NULL;
 192 #endif /* CONFIG_IBSS_RSN */
 193
 194 #ifdef CONFIG_AP
 195         wpa_supplicant_ap_deinit(wpa_s);
 196 #endif /* CONFIG_AP */
 197
 198         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 199                 return;
 200
 201         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 202         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 203         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 204         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 205 #ifdef CONFIG_SME
 206         wpa_s->sme.prev_bssid_set = 0;
 207 #endif /* CONFIG_SME */
 208 #ifdef CONFIG_P2P
 209         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 210 #endif /* CONFIG_P2P */
 211         wpa_s->current_bss = NULL;
 212         wpa_s->assoc_freq = 0;
 213 #ifdef CONFIG_IEEE80211R
 214 #ifdef CONFIG_SME
 215         if (wpa_s->sme.ft_ies)
 216                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 217 #endif /* CONFIG_SME */
 218 #endif /* CONFIG_IEEE80211R */
 219
 220         if (bssid_changed)
 221                 wpas_notify_bssid_changed(wpa_s);
 222
 223         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 224         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 225         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 226                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 227         wpa_s->ap_ies_from_associnfo = 0;
 228         wpa_s->current_ssid = NULL;
 229         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 230         wpa_s->key_mgmt = 0;
 231
 232         wpas_rrm_reset(wpa_s);
 233 }
 234
 235
 236 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 237 {
 238         struct wpa_ie_data ie;
 239         int pmksa_set = -1;
 240         size_t i;
 241
 242         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 243             ie.pmkid == NULL)
 244                 return;
 245
 246         for (i = 0; i < ie.num_pmkid; i++) {
 247                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 248                                                     ie.pmkid + i * PMKID_LEN,
 249                                                     NULL, NULL, 0);
 250                 if (pmksa_set == 0) {
 251                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 252                         break;
 253                 }
 254         }
 255
 256         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 257                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 258 }
 259
 260
 261 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 262                                                  union wpa_event_data *data)
 263 {
 264         if (data == NULL) {
 265                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 266                         "event");
 267                 return;
 268         }
 269         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 270                 " index=%d preauth=%d",
 271                 MAC2STR(data->pmkid_candidate.bssid),
 272                 data->pmkid_candidate.index,
 273                 data->pmkid_candidate.preauth);
 274
 275         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 276                             data->pmkid_candidate.index,
 277                             data->pmkid_candidate.preauth);
 278 }
 279
 280
 281 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 282 {
 283         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 284             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 285                 return 0;
 286
 287 #ifdef IEEE8021X_EAPOL
 288         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 289             wpa_s->current_ssid &&
 290             !(wpa_s->current_ssid->eapol_flags &
 291               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 292                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 293                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 294                  * plaintext or static WEP keys). */
 295                 return 0;
 296         }
 297 #endif /* IEEE8021X_EAPOL */
 298
 299         return 1;
 300 }
 301
 302
 303 /**
 304  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 305  * @wpa_s: pointer to wpa_supplicant data
 306  * @ssid: Configuration data for the network
 307  * Returns: 0 on success, -1 on failure
 308  *
 309  * This function is called when starting authentication with a network that is
 310  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 311  */
 312 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 313                               struct wpa_ssid *ssid)
 314 {
 315 #ifdef IEEE8021X_EAPOL
 316 #ifdef PCSC_FUNCS
 317         int aka = 0, sim = 0;
 318
 319         if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
 320             wpa_s->scard != NULL || wpa_s->conf->external_sim)
 321                 return 0;
 322
 323         if (ssid == NULL || ssid->eap.eap_methods == NULL) {
 324                 sim = 1;
 325                 aka = 1;
 326         } else {
 327                 struct eap_method_type *eap = ssid->eap.eap_methods;
 328                 while (eap->vendor != EAP_VENDOR_IETF ||
 329                        eap->method != EAP_TYPE_NONE) {
 330                         if (eap->vendor == EAP_VENDOR_IETF) {
 331                                 if (eap->method == EAP_TYPE_SIM)
 332                                         sim = 1;
 333                                 else if (eap->method == EAP_TYPE_AKA ||
 334                                          eap->method == EAP_TYPE_AKA_PRIME)
 335                                         aka = 1;
 336                         }
 337                         eap++;
 338                 }
 339         }
 340
 341         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 342                 sim = 0;
 343         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 344             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 345             NULL)
 346                 aka = 0;
 347
 348         if (!sim && !aka) {
 349                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 350                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 351                         "enabled");
 352                 return 0;
 353         }
 354
 355         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 356                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 357
 358         wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
 359         if (wpa_s->scard == NULL) {
 360                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 361                         "(pcsc-lite)");
 362                 return -1;
 363         }
 364         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 365         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 366 #endif /* PCSC_FUNCS */
 367 #endif /* IEEE8021X_EAPOL */
 368
 369         return 0;
 370 }
 371
 372
 373 #ifndef CONFIG_NO_SCAN_PROCESSING
 374
 375 static int has_wep_key(struct wpa_ssid *ssid)
 376 {
 377         int i;
 378
 379         for (i = 0; i < NUM_WEP_KEYS; i++) {
 380                 if (ssid->wep_key_len[i])
 381                         return 1;
 382         }
 383
 384         return 0;
 385 }
 386
 387
 388 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 389                                         struct wpa_ssid *ssid)
 390 {
 391         int privacy = 0;
 392
 393         if (ssid->mixed_cell)
 394                 return 1;
 395
 396 #ifdef CONFIG_WPS
 397         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 398                 return 1;
 399 #endif /* CONFIG_WPS */
 400
 401         if (has_wep_key(ssid))
 402                 privacy = 1;
 403
 404 #ifdef IEEE8021X_EAPOL
 405         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 406             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 407                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 408                 privacy = 1;
 409 #endif /* IEEE8021X_EAPOL */
 410
 411         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 412                 privacy = 1;
 413
 414         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 415                 privacy = 1;
 416
 417         if (bss->caps & IEEE80211_CAP_PRIVACY)
 418                 return privacy;
 419         return !privacy;
 420 }
 421
 422
 423 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 424                                          struct wpa_ssid *ssid,
 425                                          struct wpa_bss *bss)
 426 {
 427         struct wpa_ie_data ie;
 428         int proto_match = 0;
 429         const u8 *rsn_ie, *wpa_ie;
 430         int ret;
 431         int wep_ok;
 432
 433         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 434         if (ret >= 0)
 435                 return ret;
 436
 437         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 438         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 439                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 440                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 441                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 442
 443         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 444         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 445                 proto_match++;
 446
 447                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 448                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 449                                 "failed");
 450                         break;
 451                 }
 452
 453                 if (wep_ok &&
 454                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 455                 {
 456                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 457                                 "in RSN IE");
 458                         return 1;
 459                 }
 460
 461                 if (!(ie.proto & ssid->proto)) {
 462                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 463                                 "mismatch");
 464                         break;
 465                 }
 466
 467                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 468                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 469                                 "cipher mismatch");
 470                         break;
 471                 }
 472
 473                 if (!(ie.group_cipher & ssid->group_cipher)) {
 474                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 475                                 "cipher mismatch");
 476                         break;
 477                 }
 478
 479                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 480                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 481                                 "mismatch");
 482                         break;
 483                 }
 484
 485 #ifdef CONFIG_IEEE80211W
 486                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 487                     (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
 488                      wpa_s->conf->pmf : ssid->ieee80211w) ==
 489                     MGMT_FRAME_PROTECTION_REQUIRED) {
 490                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 491                                 "frame protection");
 492                         break;
 493                 }
 494 #endif /* CONFIG_IEEE80211W */
 495
 496                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 497                 return 1;
 498         }
 499
 500         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 501         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 502                 proto_match++;
 503
 504                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 505                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 506                                 "failed");
 507                         break;
 508                 }
 509
 510                 if (wep_ok &&
 511                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 512                 {
 513                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 514                                 "in WPA IE");
 515                         return 1;
 516                 }
 517
 518                 if (!(ie.proto & ssid->proto)) {
 519                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 520                                 "mismatch");
 521                         break;
 522                 }
 523
 524                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 525                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 526                                 "cipher mismatch");
 527                         break;
 528                 }
 529
 530                 if (!(ie.group_cipher & ssid->group_cipher)) {
 531                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 532                                 "cipher mismatch");
 533                         break;
 534                 }
 535
 536                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 537                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 538                                 "mismatch");
 539                         break;
 540                 }
 541
 542                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 543                 return 1;
 544         }
 545
 546         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 547             !rsn_ie) {
 548                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 549                 return 1;
 550         }
 551
 552         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 553             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 554                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 555                 return 0;
 556         }
 557
 558         if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
 559             wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
 560                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
 561                 return 1;
 562         }
 563
 564         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 565                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 566                 return 1;
 567         }
 568
 569         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 570                 "WPA/WPA2");
 571
 572         return 0;
 573 }
 574
 575
 576 static int freq_allowed(int *freqs, int freq)
 577 {
 578         int i;
 579
 580         if (freqs == NULL)
 581                 return 1;
 582
 583         for (i = 0; freqs[i]; i++)
 584                 if (freqs[i] == freq)
 585                         return 1;
 586         return 0;
 587 }
 588
 589
 590 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 591 {
 592         const struct hostapd_hw_modes *mode = NULL, *modes;
 593         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 594         const u8 *rate_ie;
 595         int i, j, k;
 596
 597         if (bss->freq == 0)
 598                 return 1; /* Cannot do matching without knowing band */
 599
 600         modes = wpa_s->hw.modes;
 601         if (modes == NULL) {
 602                 /*
 603                  * The driver does not provide any additional information
 604                  * about the utilized hardware, so allow the connection attempt
 605                  * to continue.
 606                  */
 607                 return 1;
 608         }
 609
 610         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 611                 for (j = 0; j < modes[i].num_channels; j++) {
 612                         int freq = modes[i].channels[j].freq;
 613                         if (freq == bss->freq) {
 614                                 if (mode &&
 615                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 616                                         break; /* do not allow 802.11b replace
 617                                                 * 802.11g */
 618                                 mode = &modes[i];
 619                                 break;
 620                         }
 621                 }
 622         }
 623
 624         if (mode == NULL)
 625                 return 0;
 626
 627         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 628                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 629                 if (rate_ie == NULL)
 630                         continue;
 631
 632                 for (j = 2; j < rate_ie[1] + 2; j++) {
 633                         int flagged = !!(rate_ie[j] & 0x80);
 634                         int r = (rate_ie[j] & 0x7f) * 5;
 635
 636                         /*
 637                          * IEEE Std 802.11n-2009 7.3.2.2:
 638                          * The new BSS Membership selector value is encoded
 639                          * like a legacy basic rate, but it is not a rate and
 640                          * only indicates if the BSS members are required to
 641                          * support the mandatory features of Clause 20 [HT PHY]
 642                          * in order to join the BSS.
 643                          */
 644                         if (flagged && ((rate_ie[j] & 0x7f) ==
 645                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 646                                 if (!ht_supported(mode)) {
 647                                         wpa_dbg(wpa_s, MSG_DEBUG,
 648                                                 "   hardware does not support "
 649                                                 "HT PHY");
 650                                         return 0;
 651                                 }
 652                                 continue;
 653                         }
 654
 655                         /* There's also a VHT selector for 802.11ac */
 656                         if (flagged && ((rate_ie[j] & 0x7f) ==
 657                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 658                                 if (!vht_supported(mode)) {
 659                                         wpa_dbg(wpa_s, MSG_DEBUG,
 660                                                 "   hardware does not support "
 661                                                 "VHT PHY");
 662                                         return 0;
 663                                 }
 664                                 continue;
 665                         }
 666
 667                         if (!flagged)
 668                                 continue;
 669
 670                         /* check for legacy basic rates */
 671                         for (k = 0; k < mode->num_rates; k++) {
 672                                 if (mode->rates[k] == r)
 673                                         break;
 674                         }
 675                         if (k == mode->num_rates) {
 676                                 /*
 677                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 678                                  * order to join a BSS all required rates
 679                                  * have to be supported by the hardware.
 680                                  */
 681                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 682                                         "not support required rate %d.%d Mbps",
 683                                         r / 10, r % 10);
 684                                 return 0;
 685                         }
 686                 }
 687         }
 688
 689         return 1;
 690 }
 691
 692
 693 /*
 694  * Test whether BSS is in an ESS.
 695  * This is done differently in DMG (60 GHz) and non-DMG bands
 696  */
 697 static int bss_is_ess(struct wpa_bss *bss)
 698 {
 699         if (bss_is_dmg(bss)) {
 700                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 701                         IEEE80211_CAP_DMG_AP;
 702         }
 703
 704         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 705                 IEEE80211_CAP_ESS);
 706 }
 707
 708
 709 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 710                                             int i, struct wpa_bss *bss,
 711                                             struct wpa_ssid *group,
 712                                             int only_first_ssid)
 713 {
 714         u8 wpa_ie_len, rsn_ie_len;
 715         int wpa;
 716         struct wpa_blacklist *e;
 717         const u8 *ie;
 718         struct wpa_ssid *ssid;
 719         int osen;
 720
 721         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 722         wpa_ie_len = ie ? ie[1] : 0;
 723
 724         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 725         rsn_ie_len = ie ? ie[1] : 0;
 726
 727         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 728         osen = ie != NULL;
 729
 730         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 731                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
 732                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 733                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 734                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 735                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 736                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 737                 " p2p" : "",
 738                 osen ? " osen=1" : "");
 739
 740         e = wpa_blacklist_get(wpa_s, bss->bssid);
 741         if (e) {
 742                 int limit = 1;
 743                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 744                         /*
 745                          * When only a single network is enabled, we can
 746                          * trigger blacklisting on the first failure. This
 747                          * should not be done with multiple enabled networks to
 748                          * avoid getting forced to move into a worse ESS on
 749                          * single error if there are no other BSSes of the
 750                          * current ESS.
 751                          */
 752                         limit = 0;
 753                 }
 754                 if (e->count > limit) {
 755                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 756                                 "(count=%d limit=%d)", e->count, limit);
 757                         return NULL;
 758                 }
 759         }
 760
 761         if (bss->ssid_len == 0) {
 762                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 763                 return NULL;
 764         }
 765
 766         if (disallowed_bssid(wpa_s, bss->bssid)) {
 767                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 768                 return NULL;
 769         }
 770
 771         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 772                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 773                 return NULL;
 774         }
 775
 776         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 777
 778         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 779                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 780                 int res;
 781
 782                 if (wpas_network_disabled(wpa_s, ssid)) {
 783                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 784                         continue;
 785                 }
 786
 787                 res = wpas_temp_disabled(wpa_s, ssid);
 788                 if (res > 0) {
 789                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 790                                 "temporarily for %d second(s)", res);
 791                         continue;
 792                 }
 793
 794 #ifdef CONFIG_WPS
 795                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 796                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 797                                 "(WPS)");
 798                         continue;
 799                 }
 800
 801                 if (wpa && ssid->ssid_len == 0 &&
 802                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 803                         check_ssid = 0;
 804
 805                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 806                         /* Only allow wildcard SSID match if an AP
 807                          * advertises active WPS operation that matches
 808                          * with our mode. */
 809                         check_ssid = 1;
 810                         if (ssid->ssid_len == 0 &&
 811                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 812                                 check_ssid = 0;
 813                 }
 814 #endif /* CONFIG_WPS */
 815
 816                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 817                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 818                         check_ssid = 0;
 819
 820                 if (check_ssid &&
 821                     (bss->ssid_len != ssid->ssid_len ||
 822                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 823                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 824                         continue;
 825                 }
 826
 827                 if (ssid->bssid_set &&
 828                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 829                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 830                         continue;
 831                 }
 832
 833                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 834                         continue;
 835
 836                 if (!osen && !wpa &&
 837                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 838                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 839                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 840                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 841                                 "not allowed");
 842                         continue;
 843                 }
 844
 845                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 846                     has_wep_key(ssid)) {
 847                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 848                         continue;
 849                 }
 850
 851                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
 852                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
 853                                 "not allowed");
 854                         continue;
 855                 }
 856
 857                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 858                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 859                                 "mismatch");
 860                         continue;
 861                 }
 862
 863                 if (!bss_is_ess(bss)) {
 864                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 865                         continue;
 866                 }
 867
 868                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 869                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 870                                 "allowed");
 871                         continue;
 872                 }
 873
 874                 if (!rate_match(wpa_s, bss)) {
 875                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 876                                 "not match");
 877                         continue;
 878                 }
 879
 880 #ifdef CONFIG_P2P
 881                 if (ssid->p2p_group &&
 882                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 883                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 884                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
 885                         continue;
 886                 }
 887
 888                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
 889                         struct wpabuf *p2p_ie;
 890                         u8 dev_addr[ETH_ALEN];
 891
 892                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
 893                         if (ie == NULL) {
 894                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
 895                                 continue;
 896                         }
 897                         p2p_ie = wpa_bss_get_vendor_ie_multi(
 898                                 bss, P2P_IE_VENDOR_TYPE);
 899                         if (p2p_ie == NULL) {
 900                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
 901                                 continue;
 902                         }
 903
 904                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
 905                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
 906                                          ETH_ALEN) != 0) {
 907                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
 908                                 wpabuf_free(p2p_ie);
 909                                 continue;
 910                         }
 911                         wpabuf_free(p2p_ie);
 912                 }
 913
 914                 /*
 915                  * TODO: skip the AP if its P2P IE has Group Formation
 916                  * bit set in the P2P Group Capability Bitmap and we
 917                  * are not in Group Formation with that device.
 918                  */
 919 #endif /* CONFIG_P2P */
 920
 921                 /* Matching configuration found */
 922                 return ssid;
 923         }
 924
 925         /* No matching configuration found */
 926         return NULL;
 927 }
 928
 929
 930 static struct wpa_bss *
 931 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 932                           struct wpa_ssid *group,
 933                           struct wpa_ssid **selected_ssid,
 934                           int only_first_ssid)
 935 {
 936         unsigned int i;
 937
 938         if (only_first_ssid)
 939                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
 940                         group->id);
 941         else
 942                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 943                         group->priority);
 944
 945         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 946                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 947                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
 948                                                     only_first_ssid);
 949                 if (!*selected_ssid)
 950                         continue;
 951                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 952                         " ssid='%s'",
 953                         MAC2STR(bss->bssid),
 954                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
 955                 return bss;
 956         }
 957
 958         return NULL;
 959 }
 960
 961
 962 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 963                                              struct wpa_ssid **selected_ssid)
 964 {
 965         struct wpa_bss *selected = NULL;
 966         int prio;
 967         struct wpa_ssid *next_ssid = NULL;
 968
 969         if (wpa_s->last_scan_res == NULL ||
 970             wpa_s->last_scan_res_used == 0)
 971                 return NULL; /* no scan results from last update */
 972
 973         if (wpa_s->next_ssid) {
 974                 struct wpa_ssid *ssid;
 975
 976                 /* check that next_ssid is still valid */
 977                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 978                         if (ssid == wpa_s->next_ssid)
 979                                 break;
 980                 }
 981                 next_ssid = ssid;
 982                 wpa_s->next_ssid = NULL;
 983         }
 984
 985         while (selected == NULL) {
 986                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 987                         if (next_ssid && next_ssid->priority ==
 988                             wpa_s->conf->pssid[prio]->priority) {
 989                                 selected = wpa_supplicant_select_bss(
 990                                         wpa_s, next_ssid, selected_ssid, 1);
 991                                 if (selected)
 992                                         break;
 993                         }
 994                         selected = wpa_supplicant_select_bss(
 995                                 wpa_s, wpa_s->conf->pssid[prio],
 996                                 selected_ssid, 0);
 997                         if (selected)
 998                                 break;
 999                 }
1000
1001                 if (selected == NULL && wpa_s->blacklist &&
1002                     !wpa_s->countermeasures) {
1003                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1004                                 "blacklist and try again");
1005                         wpa_blacklist_clear(wpa_s);
1006                         wpa_s->blacklist_cleared++;
1007                 } else if (selected == NULL)
1008                         break;
1009         }
1010
1011         return selected;
1012 }
1013
1014
1015 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1016                                         int timeout_sec, int timeout_usec)
1017 {
1018         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1019                 /*
1020                  * No networks are enabled; short-circuit request so
1021                  * we don't wait timeout seconds before transitioning
1022                  * to INACTIVE state.
1023                  */
1024                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1025                         "since there are no enabled networks");
1026                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1027                 return;
1028         }
1029
1030         wpa_s->scan_for_connection = 1;
1031         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1032 }
1033
1034
1035 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1036                            struct wpa_bss *selected,
1037                            struct wpa_ssid *ssid)
1038 {
1039         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1040                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1041                         "PBC session overlap");
1042 #ifdef CONFIG_P2P
1043                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1044                     wpa_s->p2p_in_provisioning) {
1045                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1046                                                wpa_s, NULL);
1047                         return -1;
1048                 }
1049 #endif /* CONFIG_P2P */
1050
1051 #ifdef CONFIG_WPS
1052                 wpas_wps_cancel(wpa_s);
1053 #endif /* CONFIG_WPS */
1054                 return -1;
1055         }
1056
1057         wpa_msg(wpa_s, MSG_DEBUG,
1058                 "Considering connect request: reassociate: %d  selected: "
1059                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1060                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1061                 wpa_s->reassociate, MAC2STR(selected->bssid),
1062                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1063                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1064                 ssid, wpa_s->current_ssid);
1065
1066         /*
1067          * Do not trigger new association unless the BSSID has changed or if
1068          * reassociation is requested. If we are in process of associating with
1069          * the selected BSSID, do not trigger new attempt.
1070          */
1071         if (wpa_s->reassociate ||
1072             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1073              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1074                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1075               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1076                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1077                0) ||
1078               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1079                ssid != wpa_s->current_ssid)))) {
1080                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1081                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1082                         return 0;
1083                 }
1084                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1085                         MAC2STR(selected->bssid));
1086                 wpa_supplicant_associate(wpa_s, selected, ssid);
1087         } else {
1088                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1089                         "connect with the selected AP");
1090         }
1091
1092         return 0;
1093 }
1094
1095
1096 static struct wpa_ssid *
1097 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1098 {
1099         int prio;
1100         struct wpa_ssid *ssid;
1101
1102         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1103                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1104                 {
1105                         if (wpas_network_disabled(wpa_s, ssid))
1106                                 continue;
1107                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1108                             ssid->mode == IEEE80211_MODE_AP ||
1109                             ssid->mode == IEEE80211_MODE_MESH)
1110                                 return ssid;
1111                 }
1112         }
1113         return NULL;
1114 }
1115
1116
1117 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1118  * on BSS added and BSS changed events */
1119 static void wpa_supplicant_rsn_preauth_scan_results(
1120         struct wpa_supplicant *wpa_s)
1121 {
1122         struct wpa_bss *bss;
1123
1124         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1125                 return;
1126
1127         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1128                 const u8 *ssid, *rsn;
1129
1130                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1131                 if (ssid == NULL)
1132                         continue;
1133
1134                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1135                 if (rsn == NULL)
1136                         continue;
1137
1138                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1139         }
1140
1141 }
1142
1143
1144 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1145                                        struct wpa_bss *selected,
1146                                        struct wpa_ssid *ssid)
1147 {
1148         struct wpa_bss *current_bss = NULL;
1149         int min_diff;
1150
1151         if (wpa_s->reassociate)
1152                 return 1; /* explicit request to reassociate */
1153         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1154                 return 1; /* we are not associated; continue */
1155         if (wpa_s->current_ssid == NULL)
1156                 return 1; /* unknown current SSID */
1157         if (wpa_s->current_ssid != ssid)
1158                 return 1; /* different network block */
1159
1160         if (wpas_driver_bss_selection(wpa_s))
1161                 return 0; /* Driver-based roaming */
1162
1163         if (wpa_s->current_ssid->ssid)
1164                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1165                                           wpa_s->current_ssid->ssid,
1166                                           wpa_s->current_ssid->ssid_len);
1167         if (!current_bss)
1168                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1169
1170         if (!current_bss)
1171                 return 1; /* current BSS not seen in scan results */
1172
1173         if (current_bss == selected)
1174                 return 0;
1175
1176         if (selected->last_update_idx > current_bss->last_update_idx)
1177                 return 1; /* current BSS not seen in the last scan */
1178
1179 #ifndef CONFIG_NO_ROAMING
1180         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1181         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1182                 MAC2STR(current_bss->bssid), current_bss->level);
1183         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1184                 MAC2STR(selected->bssid), selected->level);
1185
1186         if (wpa_s->current_ssid->bssid_set &&
1187             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1188             0) {
1189                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1190                         "has preferred BSSID");
1191                 return 1;
1192         }
1193
1194         if (current_bss->level < 0 && current_bss->level > selected->level) {
1195                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1196                         "signal level");
1197                 return 0;
1198         }
1199
1200         min_diff = 2;
1201         if (current_bss->level < 0) {
1202                 if (current_bss->level < -85)
1203                         min_diff = 1;
1204                 else if (current_bss->level < -80)
1205                         min_diff = 2;
1206                 else if (current_bss->level < -75)
1207                         min_diff = 3;
1208                 else if (current_bss->level < -70)
1209                         min_diff = 4;
1210                 else
1211                         min_diff = 5;
1212         }
1213         if (abs(current_bss->level - selected->level) < min_diff) {
1214                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1215                         "in signal level");
1216                 return 0;
1217         }
1218
1219         return 1;
1220 #else /* CONFIG_NO_ROAMING */
1221         return 0;
1222 #endif /* CONFIG_NO_ROAMING */
1223 }
1224
1225
1226 /* Return != 0 if no scan results could be fetched or if scan results should not
1227  * be shared with other virtual interfaces. */
1228 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1229                                               union wpa_event_data *data,
1230                                               int own_request)
1231 {
1232         struct wpa_scan_results *scan_res = NULL;
1233         int ret = 0;
1234         int ap = 0;
1235 #ifndef CONFIG_NO_RANDOM_POOL
1236         size_t i, num;
1237 #endif /* CONFIG_NO_RANDOM_POOL */
1238
1239 #ifdef CONFIG_AP
1240         if (wpa_s->ap_iface)
1241                 ap = 1;
1242 #endif /* CONFIG_AP */
1243
1244         wpa_supplicant_notify_scanning(wpa_s, 0);
1245
1246         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1247                                                    data ? &data->scan_info :
1248                                                    NULL, 1);
1249         if (scan_res == NULL) {
1250                 if (wpa_s->conf->ap_scan == 2 || ap ||
1251                     wpa_s->scan_res_handler == scan_only_handler)
1252                         return -1;
1253                 if (!own_request)
1254                         return -1;
1255                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1256                         "scanning again");
1257                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1258                 ret = -1;
1259                 goto scan_work_done;
1260         }
1261
1262 #ifndef CONFIG_NO_RANDOM_POOL
1263         num = scan_res->num;
1264         if (num > 10)
1265                 num = 10;
1266         for (i = 0; i < num; i++) {
1267                 u8 buf[5];
1268                 struct wpa_scan_res *res = scan_res->res[i];
1269                 buf[0] = res->bssid[5];
1270                 buf[1] = res->qual & 0xff;
1271                 buf[2] = res->noise & 0xff;
1272                 buf[3] = res->level & 0xff;
1273                 buf[4] = res->tsf & 0xff;
1274                 random_add_randomness(buf, sizeof(buf));
1275         }
1276 #endif /* CONFIG_NO_RANDOM_POOL */
1277
1278         if (own_request && wpa_s->scan_res_handler &&
1279             (wpa_s->own_scan_running || !wpa_s->external_scan_running)) {
1280                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1281                                          struct wpa_scan_results *scan_res);
1282
1283                 scan_res_handler = wpa_s->scan_res_handler;
1284                 wpa_s->scan_res_handler = NULL;
1285                 scan_res_handler(wpa_s, scan_res);
1286                 ret = -2;
1287                 goto scan_work_done;
1288         }
1289
1290         if (ap) {
1291                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1292 #ifdef CONFIG_AP
1293                 if (wpa_s->ap_iface->scan_cb)
1294                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1295 #endif /* CONFIG_AP */
1296                 goto scan_work_done;
1297         }
1298
1299         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1300                 wpa_s->own_scan_running, wpa_s->external_scan_running);
1301         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1302             wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1303                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1304                              wpa_s->manual_scan_id);
1305                 wpa_s->manual_scan_use_id = 0;
1306         } else {
1307                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1308         }
1309         wpas_notify_scan_results(wpa_s);
1310
1311         wpas_notify_scan_done(wpa_s, 1);
1312
1313         if (!wpa_s->own_scan_running && wpa_s->external_scan_running) {
1314                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1315                 wpa_scan_results_free(scan_res);
1316                 return 0;
1317         }
1318
1319         if (wnm_scan_process(wpa_s, 1) > 0)
1320                 goto scan_work_done;
1321
1322         if (sme_proc_obss_scan(wpa_s) > 0)
1323                 goto scan_work_done;
1324
1325         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1326                 goto scan_work_done;
1327
1328         if (autoscan_notify_scan(wpa_s, scan_res))
1329                 goto scan_work_done;
1330
1331         if (wpa_s->disconnected) {
1332                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1333                 goto scan_work_done;
1334         }
1335
1336         if (!wpas_driver_bss_selection(wpa_s) &&
1337             bgscan_notify_scan(wpa_s, scan_res) == 1)
1338                 goto scan_work_done;
1339
1340         wpas_wps_update_ap_info(wpa_s, scan_res);
1341
1342         wpa_scan_results_free(scan_res);
1343
1344         if (wpa_s->scan_work) {
1345                 struct wpa_radio_work *work = wpa_s->scan_work;
1346                 wpa_s->scan_work = NULL;
1347                 radio_work_done(work);
1348         }
1349
1350         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1351
1352 scan_work_done:
1353         wpa_scan_results_free(scan_res);
1354         if (wpa_s->scan_work) {
1355                 struct wpa_radio_work *work = wpa_s->scan_work;
1356                 wpa_s->scan_work = NULL;
1357                 radio_work_done(work);
1358         }
1359         return ret;
1360 }
1361
1362
1363 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1364                                               int new_scan, int own_request)
1365 {
1366         struct wpa_bss *selected;
1367         struct wpa_ssid *ssid = NULL;
1368
1369         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1370
1371         if (selected) {
1372                 int skip;
1373                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1374                 if (skip) {
1375                         if (new_scan)
1376                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1377                         return 0;
1378                 }
1379
1380                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1381                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1382                         return -1;
1383                 }
1384                 if (new_scan)
1385                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1386                 /*
1387                  * Do not notify other virtual radios of scan results since we do not
1388                  * want them to start other associations at the same time.
1389                  */
1390                 return 1;
1391         } else {
1392 #ifdef CONFIG_MESH
1393                 if (wpa_s->ifmsh) {
1394                         wpa_msg(wpa_s, MSG_INFO,
1395                                 "Avoiding join because we already joined a mesh group");
1396                         return 0;
1397                 }
1398 #endif /* CONFIG_MESH */
1399                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1400                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1401                 if (ssid) {
1402                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1403                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1404                         if (new_scan)
1405                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1406                 } else if (own_request) {
1407                         /*
1408                          * No SSID found. If SCAN results are as a result of
1409                          * own scan request and not due to a scan request on
1410                          * another shared interface, try another scan.
1411                          */
1412                         int timeout_sec = wpa_s->scan_interval;
1413                         int timeout_usec = 0;
1414 #ifdef CONFIG_P2P
1415                         if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1416                                 return 0;
1417
1418                         if (wpa_s->p2p_in_provisioning ||
1419                             wpa_s->show_group_started ||
1420                             wpa_s->p2p_in_invitation) {
1421                                 /*
1422                                  * Use shorter wait during P2P Provisioning
1423                                  * state and during P2P join-a-group operation
1424                                  * to speed up group formation.
1425                                  */
1426                                 timeout_sec = 0;
1427                                 timeout_usec = 250000;
1428                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1429                                                             timeout_usec);
1430                                 return 0;
1431                         }
1432 #endif /* CONFIG_P2P */
1433 #ifdef CONFIG_INTERWORKING
1434                         if (wpa_s->conf->auto_interworking &&
1435                             wpa_s->conf->interworking &&
1436                             wpa_s->conf->cred) {
1437                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1438                                         "start ANQP fetch since no matching "
1439                                         "networks found");
1440                                 wpa_s->network_select = 1;
1441                                 wpa_s->auto_network_select = 1;
1442                                 interworking_start_fetch_anqp(wpa_s);
1443                                 return 1;
1444                         }
1445 #endif /* CONFIG_INTERWORKING */
1446 #ifdef CONFIG_WPS
1447                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1448                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1449                                 timeout_sec = 0;
1450                                 timeout_usec = 500000;
1451                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1452                                                             timeout_usec);
1453                                 return 0;
1454                         }
1455 #endif /* CONFIG_WPS */
1456                         if (wpa_supplicant_req_sched_scan(wpa_s))
1457                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1458                                                             timeout_usec);
1459                 }
1460         }
1461         return 0;
1462 }
1463
1464
1465 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1466                                               union wpa_event_data *data)
1467 {
1468         struct wpa_supplicant *ifs;
1469
1470         if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
1471                 /*
1472                  * If no scan results could be fetched, then no need to
1473                  * notify those interfaces that did not actually request
1474                  * this scan. Similarly, if scan results started a new operation on this
1475                  * interface, do not notify other interfaces to avoid concurrent
1476                  * operations during a connection attempt.
1477                  */
1478                 return;
1479         }
1480
1481         /*
1482          * Check other interfaces to see if they share the same radio. If
1483          * so, they get updated with this same scan info.
1484          */
1485         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1486                          radio_list) {
1487                 if (ifs != wpa_s) {
1488                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1489                                    "sibling", ifs->ifname);
1490                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1491                 }
1492         }
1493 }
1494
1495 #endif /* CONFIG_NO_SCAN_PROCESSING */
1496
1497
1498 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1499 {
1500 #ifdef CONFIG_NO_SCAN_PROCESSING
1501         return -1;
1502 #else /* CONFIG_NO_SCAN_PROCESSING */
1503         struct os_reltime now;
1504
1505         if (wpa_s->last_scan_res_used <= 0)
1506                 return -1;
1507
1508         os_get_reltime(&now);
1509         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1510                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1511                 return -1;
1512         }
1513
1514         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1515 #endif /* CONFIG_NO_SCAN_PROCESSING */
1516 }
1517
1518 #ifdef CONFIG_WNM
1519
1520 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1521 {
1522         struct wpa_supplicant *wpa_s = eloop_ctx;
1523
1524         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1525                 return;
1526
1527         if (!wpa_s->no_keep_alive) {
1528                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1529                            MAC2STR(wpa_s->bssid));
1530                 /* TODO: could skip this if normal data traffic has been sent */
1531                 /* TODO: Consider using some more appropriate data frame for
1532                  * this */
1533                 if (wpa_s->l2)
1534                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1535                                        (u8 *) "", 0);
1536         }
1537
1538 #ifdef CONFIG_SME
1539         if (wpa_s->sme.bss_max_idle_period) {
1540                 unsigned int msec;
1541                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1542                 if (msec > 100)
1543                         msec -= 100;
1544                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1545                                        wnm_bss_keep_alive, wpa_s, NULL);
1546         }
1547 #endif /* CONFIG_SME */
1548 }
1549
1550
1551 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1552                                    const u8 *ies, size_t ies_len)
1553 {
1554         struct ieee802_11_elems elems;
1555
1556         if (ies == NULL)
1557                 return;
1558
1559         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1560                 return;
1561
1562 #ifdef CONFIG_SME
1563         if (elems.bss_max_idle_period) {
1564                 unsigned int msec;
1565                 wpa_s->sme.bss_max_idle_period =
1566                         WPA_GET_LE16(elems.bss_max_idle_period);
1567                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1568                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1569                            (elems.bss_max_idle_period[2] & 0x01) ?
1570                            " (protected keep-live required)" : "");
1571                 if (wpa_s->sme.bss_max_idle_period == 0)
1572                         wpa_s->sme.bss_max_idle_period = 1;
1573                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1574                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1575                          /* msec times 1000 */
1576                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1577                         if (msec > 100)
1578                                 msec -= 100;
1579                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1580                                                wnm_bss_keep_alive, wpa_s,
1581                                                NULL);
1582                 }
1583         }
1584 #endif /* CONFIG_SME */
1585 }
1586
1587 #endif /* CONFIG_WNM */
1588
1589
1590 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1591 {
1592 #ifdef CONFIG_WNM
1593         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1594 #endif /* CONFIG_WNM */
1595 }
1596
1597
1598 #ifdef CONFIG_INTERWORKING
1599
1600 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1601                             size_t len)
1602 {
1603         int res;
1604
1605         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1606         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1607         if (res) {
1608                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1609         }
1610
1611         return res;
1612 }
1613
1614
1615 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1616                                             const u8 *ies, size_t ies_len)
1617 {
1618         struct ieee802_11_elems elems;
1619
1620         if (ies == NULL)
1621                 return;
1622
1623         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1624                 return;
1625
1626         if (elems.qos_map_set) {
1627                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1628                                  elems.qos_map_set_len);
1629         }
1630 }
1631
1632 #endif /* CONFIG_INTERWORKING */
1633
1634
1635 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1636                                           union wpa_event_data *data)
1637 {
1638         int l, len, found = 0, wpa_found, rsn_found;
1639         const u8 *p;
1640 #ifdef CONFIG_IEEE80211R
1641         u8 bssid[ETH_ALEN];
1642 #endif /* CONFIG_IEEE80211R */
1643
1644         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1645         if (data->assoc_info.req_ies)
1646                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1647                             data->assoc_info.req_ies_len);
1648         if (data->assoc_info.resp_ies) {
1649                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1650                             data->assoc_info.resp_ies_len);
1651 #ifdef CONFIG_TDLS
1652                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1653                                         data->assoc_info.resp_ies_len);
1654 #endif /* CONFIG_TDLS */
1655 #ifdef CONFIG_WNM
1656                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1657                                        data->assoc_info.resp_ies_len);
1658 #endif /* CONFIG_WNM */
1659 #ifdef CONFIG_INTERWORKING
1660                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1661                                                 data->assoc_info.resp_ies_len);
1662 #endif /* CONFIG_INTERWORKING */
1663         }
1664         if (data->assoc_info.beacon_ies)
1665                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1666                             data->assoc_info.beacon_ies,
1667                             data->assoc_info.beacon_ies_len);
1668         if (data->assoc_info.freq)
1669                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1670                         data->assoc_info.freq);
1671
1672         p = data->assoc_info.req_ies;
1673         l = data->assoc_info.req_ies_len;
1674
1675         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1676         while (p && l >= 2) {
1677                 len = p[1] + 2;
1678                 if (len > l) {
1679                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1680                                     p, l);
1681                         break;
1682                 }
1683                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1684                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1685                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1686                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1687                                 break;
1688                         found = 1;
1689                         wpa_find_assoc_pmkid(wpa_s);
1690                         break;
1691                 }
1692                 l -= len;
1693                 p += len;
1694         }
1695         if (!found && data->assoc_info.req_ies)
1696                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1697
1698 #ifdef CONFIG_IEEE80211R
1699 #ifdef CONFIG_SME
1700         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1701                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1702                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1703                                                  data->assoc_info.resp_ies,
1704                                                  data->assoc_info.resp_ies_len,
1705                                                  bssid) < 0) {
1706                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1707                                 "Reassociation Response failed");
1708                         wpa_supplicant_deauthenticate(
1709                                 wpa_s, WLAN_REASON_INVALID_IE);
1710                         return -1;
1711                 }
1712         }
1713
1714         p = data->assoc_info.resp_ies;
1715         l = data->assoc_info.resp_ies_len;
1716
1717 #ifdef CONFIG_WPS_STRICT
1718         if (p && wpa_s->current_ssid &&
1719             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1720                 struct wpabuf *wps;
1721                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1722                 if (wps == NULL) {
1723                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1724                                 "include WPS IE in (Re)Association Response");
1725                         return -1;
1726                 }
1727
1728                 if (wps_validate_assoc_resp(wps) < 0) {
1729                         wpabuf_free(wps);
1730                         wpa_supplicant_deauthenticate(
1731                                 wpa_s, WLAN_REASON_INVALID_IE);
1732                         return -1;
1733                 }
1734                 wpabuf_free(wps);
1735         }
1736 #endif /* CONFIG_WPS_STRICT */
1737
1738         /* Go through the IEs and make a copy of the MDIE, if present. */
1739         while (p && l >= 2) {
1740                 len = p[1] + 2;
1741                 if (len > l) {
1742                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1743                                     p, l);
1744                         break;
1745                 }
1746                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1747                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1748                         wpa_s->sme.ft_used = 1;
1749                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1750                                   MOBILITY_DOMAIN_ID_LEN);
1751                         break;
1752                 }
1753                 l -= len;
1754                 p += len;
1755         }
1756 #endif /* CONFIG_SME */
1757
1758         /* Process FT when SME is in the driver */
1759         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1760             wpa_ft_is_completed(wpa_s->wpa)) {
1761                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1762                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1763                                                  data->assoc_info.resp_ies,
1764                                                  data->assoc_info.resp_ies_len,
1765                                                  bssid) < 0) {
1766                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1767                                 "Reassociation Response failed");
1768                         wpa_supplicant_deauthenticate(
1769                                 wpa_s, WLAN_REASON_INVALID_IE);
1770                         return -1;
1771                 }
1772                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1773         }
1774
1775         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1776                              data->assoc_info.resp_ies_len);
1777 #endif /* CONFIG_IEEE80211R */
1778
1779         /* WPA/RSN IE from Beacon/ProbeResp */
1780         p = data->assoc_info.beacon_ies;
1781         l = data->assoc_info.beacon_ies_len;
1782
1783         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1784          */
1785         wpa_found = rsn_found = 0;
1786         while (p && l >= 2) {
1787                 len = p[1] + 2;
1788                 if (len > l) {
1789                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1790                                     p, l);
1791                         break;
1792                 }
1793                 if (!wpa_found &&
1794                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1795                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1796                         wpa_found = 1;
1797                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1798                 }
1799
1800                 if (!rsn_found &&
1801                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1802                         rsn_found = 1;
1803                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1804                 }
1805
1806                 l -= len;
1807                 p += len;
1808         }
1809
1810         if (!wpa_found && data->assoc_info.beacon_ies)
1811                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1812         if (!rsn_found && data->assoc_info.beacon_ies)
1813                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1814         if (wpa_found || rsn_found)
1815                 wpa_s->ap_ies_from_associnfo = 1;
1816
1817         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1818             wpa_s->assoc_freq != data->assoc_info.freq) {
1819                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1820                            "%u to %u MHz",
1821                            wpa_s->assoc_freq, data->assoc_info.freq);
1822                 wpa_supplicant_update_scan_results(wpa_s);
1823         }
1824
1825         wpa_s->assoc_freq = data->assoc_info.freq;
1826
1827         return 0;
1828 }
1829
1830
1831 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1832 {
1833         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1834
1835         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1836                 return -1;
1837
1838         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1839                 return 0;
1840
1841         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1842                                         WPA_IE_VENDOR_TYPE);
1843         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1844
1845         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1846                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1847             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1848                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1849                 return -1;
1850
1851         return 0;
1852 }
1853
1854
1855 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1856                                        union wpa_event_data *data)
1857 {
1858         u8 bssid[ETH_ALEN];
1859         int ft_completed;
1860
1861 #ifdef CONFIG_AP
1862         if (wpa_s->ap_iface) {
1863                 if (!data)
1864                         return;
1865                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1866                                     data->assoc_info.addr,
1867                                     data->assoc_info.req_ies,
1868                                     data->assoc_info.req_ies_len,
1869                                     data->assoc_info.reassoc);
1870                 return;
1871         }
1872 #endif /* CONFIG_AP */
1873
1874         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1875         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1876                 return;
1877
1878         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1879                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1880                 wpa_supplicant_deauthenticate(
1881                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1882                 return;
1883         }
1884
1885         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1886         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1887                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1888                         MACSTR, MAC2STR(bssid));
1889                 random_add_randomness(bssid, ETH_ALEN);
1890                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1891                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1892                 wpas_notify_bssid_changed(wpa_s);
1893
1894                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1895                         wpa_clear_keys(wpa_s, bssid);
1896                 }
1897                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1898                         wpa_supplicant_deauthenticate(
1899                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1900                         return;
1901                 }
1902
1903                 if (wpa_s->conf->ap_scan == 1 &&
1904                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1905                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1906                                 wpa_msg(wpa_s, MSG_WARNING,
1907                                         "WPA/RSN IEs not updated");
1908                 }
1909         }
1910
1911 #ifdef CONFIG_SME
1912         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1913         wpa_s->sme.prev_bssid_set = 1;
1914         wpa_s->sme.last_unprot_disconnect.sec = 0;
1915 #endif /* CONFIG_SME */
1916
1917         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1918         if (wpa_s->current_ssid) {
1919                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1920                  * initialized before association, but for other modes,
1921                  * initialize PC/SC here, if the current configuration needs
1922                  * smartcard or SIM/USIM. */
1923                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1924         }
1925         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1926         if (wpa_s->l2)
1927                 l2_packet_notify_auth_start(wpa_s->l2);
1928
1929         /*
1930          * Set portEnabled first to FALSE in order to get EAP state machine out
1931          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1932          * state machine may transit to AUTHENTICATING state based on obsolete
1933          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1934          * AUTHENTICATED without ever giving chance to EAP state machine to
1935          * reset the state.
1936          */
1937         if (!ft_completed) {
1938                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1939                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1940         }
1941         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1942                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1943         /* 802.1X::portControl = Auto */
1944         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1945         wpa_s->eapol_received = 0;
1946         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1947             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1948             (wpa_s->current_ssid &&
1949              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1950                 if (wpa_s->current_ssid &&
1951                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
1952                     (wpa_s->drv_flags &
1953                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1954                         /*
1955                          * Set the key after having received joined-IBSS event
1956                          * from the driver.
1957                          */
1958                         wpa_supplicant_set_wpa_none_key(wpa_s,
1959                                                         wpa_s->current_ssid);
1960                 }
1961                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1962                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1963         } else if (!ft_completed) {
1964                 /* Timeout for receiving the first EAPOL packet */
1965                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1966         }
1967         wpa_supplicant_cancel_scan(wpa_s);
1968
1969         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1970             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1971                 /*
1972                  * We are done; the driver will take care of RSN 4-way
1973                  * handshake.
1974                  */
1975                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1976                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1977                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1978                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1979         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1980                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1981                 /*
1982                  * The driver will take care of RSN 4-way handshake, so we need
1983                  * to allow EAPOL supplicant to complete its work without
1984                  * waiting for WPA supplicant.
1985                  */
1986                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1987         } else if (ft_completed) {
1988                 /*
1989                  * FT protocol completed - make sure EAPOL state machine ends
1990                  * up in authenticated.
1991                  */
1992                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1993                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1994                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1995                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1996         }
1997
1998         wpa_s->last_eapol_matches_bssid = 0;
1999
2000         if (wpa_s->pending_eapol_rx) {
2001                 struct os_reltime now, age;
2002                 os_get_reltime(&now);
2003                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2004                 if (age.sec == 0 && age.usec < 100000 &&
2005                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2006                     0) {
2007                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2008                                 "frame that was received just before "
2009                                 "association notification");
2010                         wpa_supplicant_rx_eapol(
2011                                 wpa_s, wpa_s->pending_eapol_rx_src,
2012                                 wpabuf_head(wpa_s->pending_eapol_rx),
2013                                 wpabuf_len(wpa_s->pending_eapol_rx));
2014                 }
2015                 wpabuf_free(wpa_s->pending_eapol_rx);
2016                 wpa_s->pending_eapol_rx = NULL;
2017         }
2018
2019         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2020              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2021             wpa_s->current_ssid &&
2022             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2023                 /* Set static WEP keys again */
2024                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2025         }
2026
2027 #ifdef CONFIG_IBSS_RSN
2028         if (wpa_s->current_ssid &&
2029             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2030             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2031             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2032             wpa_s->ibss_rsn == NULL) {
2033                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2034                 if (!wpa_s->ibss_rsn) {
2035                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2036                         wpa_supplicant_deauthenticate(
2037                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2038                         return;
2039                 }
2040
2041                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2042         }
2043 #endif /* CONFIG_IBSS_RSN */
2044
2045         wpas_wps_notify_assoc(wpa_s, bssid);
2046
2047         if (data) {
2048                 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2049                                     data->assoc_info.resp_ies_len,
2050                                     &data->assoc_info.wmm_params);
2051         }
2052 }
2053
2054
2055 static int disconnect_reason_recoverable(u16 reason_code)
2056 {
2057         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2058                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2059                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2060 }
2061
2062
2063 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2064                                           u16 reason_code,
2065                                           int locally_generated)
2066 {
2067         const u8 *bssid;
2068
2069         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2070                 /*
2071                  * At least Host AP driver and a Prism3 card seemed to be
2072                  * generating streams of disconnected events when configuring
2073                  * IBSS for WPA-None. Ignore them for now.
2074                  */
2075                 return;
2076         }
2077
2078         bssid = wpa_s->bssid;
2079         if (is_zero_ether_addr(bssid))
2080                 bssid = wpa_s->pending_bssid;
2081
2082         if (!is_zero_ether_addr(bssid) ||
2083             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2084                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2085                         " reason=%d%s",
2086                         MAC2STR(bssid), reason_code,
2087                         locally_generated ? " locally_generated=1" : "");
2088         }
2089 }
2090
2091
2092 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2093                                  int locally_generated)
2094 {
2095         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2096             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2097                 return 0; /* Not in 4-way handshake with PSK */
2098
2099         /*
2100          * It looks like connection was lost while trying to go through PSK
2101          * 4-way handshake. Filter out known disconnection cases that are caused
2102          * by something else than PSK mismatch to avoid confusing reports.
2103          */
2104
2105         if (locally_generated) {
2106                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2107                         return 0;
2108         }
2109
2110         return 1;
2111 }
2112
2113
2114 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2115                                                  u16 reason_code,
2116                                                  int locally_generated)
2117 {
2118         const u8 *bssid;
2119         int authenticating;
2120         u8 prev_pending_bssid[ETH_ALEN];
2121         struct wpa_bss *fast_reconnect = NULL;
2122         struct wpa_ssid *fast_reconnect_ssid = NULL;
2123         struct wpa_ssid *last_ssid;
2124
2125         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2126         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2127
2128         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2129                 /*
2130                  * At least Host AP driver and a Prism3 card seemed to be
2131                  * generating streams of disconnected events when configuring
2132                  * IBSS for WPA-None. Ignore them for now.
2133                  */
2134                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2135                         "IBSS/WPA-None mode");
2136                 return;
2137         }
2138
2139         wmm_ac_notify_disassoc(wpa_s);
2140
2141         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2142                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2143                         "pre-shared key may be incorrect");
2144                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2145                         return; /* P2P group removed */
2146                 wpas_auth_failed(wpa_s, "WRONG_KEY");
2147         }
2148         if (!wpa_s->disconnected &&
2149             (!wpa_s->auto_reconnect_disabled ||
2150              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2151              wpas_wps_searching(wpa_s))) {
2152                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2153                         "reconnect (wps=%d/%d wpa_state=%d)",
2154                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2155                         wpas_wps_searching(wpa_s),
2156                         wpa_s->wpa_state);
2157                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2158                     wpa_s->current_ssid &&
2159                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2160                     !locally_generated &&
2161                     disconnect_reason_recoverable(reason_code)) {
2162                         /*
2163                          * It looks like the AP has dropped association with
2164                          * us, but could allow us to get back in. Try to
2165                          * reconnect to the same BSS without full scan to save
2166                          * time for some common cases.
2167                          */
2168                         fast_reconnect = wpa_s->current_bss;
2169                         fast_reconnect_ssid = wpa_s->current_ssid;
2170                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2171                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2172                 else
2173                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2174                                 "immediate scan");
2175         } else {
2176                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2177                         "try to re-connect");
2178                 wpa_s->reassociate = 0;
2179                 wpa_s->disconnected = 1;
2180                 wpa_supplicant_cancel_sched_scan(wpa_s);
2181         }
2182         bssid = wpa_s->bssid;
2183         if (is_zero_ether_addr(bssid))
2184                 bssid = wpa_s->pending_bssid;
2185         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2186                 wpas_connection_failed(wpa_s, bssid);
2187         wpa_sm_notify_disassoc(wpa_s->wpa);
2188         if (locally_generated)
2189                 wpa_s->disconnect_reason = -reason_code;
2190         else
2191                 wpa_s->disconnect_reason = reason_code;
2192         wpas_notify_disconnect_reason(wpa_s);
2193         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2194                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2195                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2196         }
2197         last_ssid = wpa_s->current_ssid;
2198         wpa_supplicant_mark_disassoc(wpa_s);
2199
2200         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2201                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2202                 wpa_s->current_ssid = last_ssid;
2203         }
2204
2205         if (fast_reconnect &&
2206             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2207             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2208             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2209                              fast_reconnect->ssid_len) &&
2210             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2211 #ifndef CONFIG_NO_SCAN_PROCESSING
2212                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2213                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2214                                            fast_reconnect_ssid) < 0) {
2215                         /* Recover through full scan */
2216                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2217                 }
2218 #endif /* CONFIG_NO_SCAN_PROCESSING */
2219         } else if (fast_reconnect) {
2220                 /*
2221                  * Could not reconnect to the same BSS due to network being
2222                  * disabled. Use a new scan to match the alternative behavior
2223                  * above, i.e., to continue automatic reconnection attempt in a
2224                  * way that enforces disabled network rules.
2225                  */
2226                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2227         }
2228 }
2229
2230
2231 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2232 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2233 {
2234         struct wpa_supplicant *wpa_s = eloop_ctx;
2235
2236         if (!wpa_s->pending_mic_error_report)
2237                 return;
2238
2239         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2240         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2241         wpa_s->pending_mic_error_report = 0;
2242 }
2243 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2244
2245
2246 static void
2247 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2248                                          union wpa_event_data *data)
2249 {
2250         int pairwise;
2251         struct os_reltime t;
2252
2253         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2254         pairwise = (data && data->michael_mic_failure.unicast);
2255         os_get_reltime(&t);
2256         if ((wpa_s->last_michael_mic_error.sec &&
2257              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2258             wpa_s->pending_mic_error_report) {
2259                 if (wpa_s->pending_mic_error_report) {
2260                         /*
2261                          * Send the pending MIC error report immediately since
2262                          * we are going to start countermeasures and AP better
2263                          * do the same.
2264                          */
2265                         wpa_sm_key_request(wpa_s->wpa, 1,
2266                                            wpa_s->pending_mic_error_pairwise);
2267                 }
2268
2269                 /* Send the new MIC error report immediately since we are going
2270                  * to start countermeasures and AP better do the same.
2271                  */
2272                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2273
2274                 /* initialize countermeasures */
2275                 wpa_s->countermeasures = 1;
2276
2277                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2278
2279                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2280
2281                 /*
2282                  * Need to wait for completion of request frame. We do not get
2283                  * any callback for the message completion, so just wait a
2284                  * short while and hope for the best. */
2285                 os_sleep(0, 10000);
2286
2287                 wpa_drv_set_countermeasures(wpa_s, 1);
2288                 wpa_supplicant_deauthenticate(wpa_s,
2289                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2290                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2291                                      wpa_s, NULL);
2292                 eloop_register_timeout(60, 0,
2293                                        wpa_supplicant_stop_countermeasures,
2294                                        wpa_s, NULL);
2295                 /* TODO: mark the AP rejected for 60 second. STA is
2296                  * allowed to associate with another AP.. */
2297         } else {
2298 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2299                 if (wpa_s->mic_errors_seen) {
2300                         /*
2301                          * Reduce the effectiveness of Michael MIC error
2302                          * reports as a means for attacking against TKIP if
2303                          * more than one MIC failure is noticed with the same
2304                          * PTK. We delay the transmission of the reports by a
2305                          * random time between 0 and 60 seconds in order to
2306                          * force the attacker wait 60 seconds before getting
2307                          * the information on whether a frame resulted in a MIC
2308                          * failure.
2309                          */
2310                         u8 rval[4];
2311                         int sec;
2312
2313                         if (os_get_random(rval, sizeof(rval)) < 0)
2314                                 sec = os_random() % 60;
2315                         else
2316                                 sec = WPA_GET_BE32(rval) % 60;
2317                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2318                                 "report %d seconds", sec);
2319                         wpa_s->pending_mic_error_report = 1;
2320                         wpa_s->pending_mic_error_pairwise = pairwise;
2321                         eloop_cancel_timeout(
2322                                 wpa_supplicant_delayed_mic_error_report,
2323                                 wpa_s, NULL);
2324                         eloop_register_timeout(
2325                                 sec, os_random() % 1000000,
2326                                 wpa_supplicant_delayed_mic_error_report,
2327                                 wpa_s, NULL);
2328                 } else {
2329                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2330                 }
2331 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2332                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2333 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2334         }
2335         wpa_s->last_michael_mic_error = t;
2336         wpa_s->mic_errors_seen++;
2337 }
2338
2339
2340 #ifdef CONFIG_TERMINATE_ONLASTIF
2341 static int any_interfaces(struct wpa_supplicant *head)
2342 {
2343         struct wpa_supplicant *wpa_s;
2344
2345         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2346                 if (!wpa_s->interface_removed)
2347                         return 1;
2348         return 0;
2349 }
2350 #endif /* CONFIG_TERMINATE_ONLASTIF */
2351
2352
2353 static void
2354 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2355                                       union wpa_event_data *data)
2356 {
2357         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2358                 return;
2359
2360         switch (data->interface_status.ievent) {
2361         case EVENT_INTERFACE_ADDED:
2362                 if (!wpa_s->interface_removed)
2363                         break;
2364                 wpa_s->interface_removed = 0;
2365                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2366                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2367                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2368                                 "driver after interface was added");
2369                 }
2370                 break;
2371         case EVENT_INTERFACE_REMOVED:
2372                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2373                 wpa_s->interface_removed = 1;
2374                 wpa_supplicant_mark_disassoc(wpa_s);
2375                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2376                 l2_packet_deinit(wpa_s->l2);
2377                 wpa_s->l2 = NULL;
2378 #ifdef CONFIG_TERMINATE_ONLASTIF
2379                 /* check if last interface */
2380                 if (!any_interfaces(wpa_s->global->ifaces))
2381                         eloop_terminate();
2382 #endif /* CONFIG_TERMINATE_ONLASTIF */
2383                 break;
2384         }
2385 }
2386
2387
2388 #ifdef CONFIG_PEERKEY
2389 static void
2390 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2391                               union wpa_event_data *data)
2392 {
2393         if (data == NULL)
2394                 return;
2395         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2396 }
2397 #endif /* CONFIG_PEERKEY */
2398
2399
2400 #ifdef CONFIG_TDLS
2401 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2402                                       union wpa_event_data *data)
2403 {
2404         if (data == NULL)
2405                 return;
2406         switch (data->tdls.oper) {
2407         case TDLS_REQUEST_SETUP:
2408                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2409                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2410                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2411                 else
2412                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2413                 break;
2414         case TDLS_REQUEST_TEARDOWN:
2415                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2416                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2417                                                data->tdls.reason_code);
2418                 else
2419                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2420                                           data->tdls.peer);
2421                 break;
2422         }
2423 }
2424 #endif /* CONFIG_TDLS */
2425
2426
2427 #ifdef CONFIG_WNM
2428 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2429                                      union wpa_event_data *data)
2430 {
2431         if (data == NULL)
2432                 return;
2433         switch (data->wnm.oper) {
2434         case WNM_OPER_SLEEP:
2435                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2436                            "(action=%d, intval=%d)",
2437                            data->wnm.sleep_action, data->wnm.sleep_intval);
2438                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2439                                              data->wnm.sleep_intval, NULL);
2440                 break;
2441         }
2442 }
2443 #endif /* CONFIG_WNM */
2444
2445
2446 #ifdef CONFIG_IEEE80211R
2447 static void
2448 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2449                                  union wpa_event_data *data)
2450 {
2451         if (data == NULL)
2452                 return;
2453
2454         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2455                                     data->ft_ies.ies_len,
2456                                     data->ft_ies.ft_action,
2457                                     data->ft_ies.target_ap,
2458                                     data->ft_ies.ric_ies,
2459                                     data->ft_ies.ric_ies_len) < 0) {
2460                 /* TODO: prevent MLME/driver from trying to associate? */
2461         }
2462 }
2463 #endif /* CONFIG_IEEE80211R */
2464
2465
2466 #ifdef CONFIG_IBSS_RSN
2467 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2468                                                 union wpa_event_data *data)
2469 {
2470         struct wpa_ssid *ssid;
2471         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2472                 return;
2473         if (data == NULL)
2474                 return;
2475         ssid = wpa_s->current_ssid;
2476         if (ssid == NULL)
2477                 return;
2478         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2479                 return;
2480
2481         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2482 }
2483
2484
2485 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2486                                            union wpa_event_data *data)
2487 {
2488         struct wpa_ssid *ssid = wpa_s->current_ssid;
2489
2490         if (ssid == NULL)
2491                 return;
2492
2493         /* check if the ssid is correctly configured as IBSS/RSN */
2494         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2495                 return;
2496
2497         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2498                              data->rx_mgmt.frame_len);
2499 }
2500 #endif /* CONFIG_IBSS_RSN */
2501
2502
2503 #ifdef CONFIG_IEEE80211R
2504 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2505                          size_t len)
2506 {
2507         const u8 *sta_addr, *target_ap_addr;
2508         u16 status;
2509
2510         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2511         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2512                 return; /* only SME case supported for now */
2513         if (len < 1 + 2 * ETH_ALEN + 2)
2514                 return;
2515         if (data[0] != 2)
2516                 return; /* Only FT Action Response is supported for now */
2517         sta_addr = data + 1;
2518         target_ap_addr = data + 1 + ETH_ALEN;
2519         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2520         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2521                 MACSTR " TargetAP " MACSTR " status %u",
2522                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2523
2524         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2525                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2526                         " in FT Action Response", MAC2STR(sta_addr));
2527                 return;
2528         }
2529
2530         if (status) {
2531                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2532                         "failure (status code %d)", status);
2533                 /* TODO: report error to FT code(?) */
2534                 return;
2535         }
2536
2537         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2538                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2539                                     target_ap_addr, NULL, 0) < 0)
2540                 return;
2541
2542 #ifdef CONFIG_SME
2543         {
2544                 struct wpa_bss *bss;
2545                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2546                 if (bss)
2547                         wpa_s->sme.freq = bss->freq;
2548                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2549                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2550                               WLAN_AUTH_FT);
2551         }
2552 #endif /* CONFIG_SME */
2553 }
2554 #endif /* CONFIG_IEEE80211R */
2555
2556
2557 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2558                                                struct unprot_deauth *e)
2559 {
2560 #ifdef CONFIG_IEEE80211W
2561         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2562                    "dropped: " MACSTR " -> " MACSTR
2563                    " (reason code %u)",
2564                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2565         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2566 #endif /* CONFIG_IEEE80211W */
2567 }
2568
2569
2570 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2571                                                  struct unprot_disassoc *e)
2572 {
2573 #ifdef CONFIG_IEEE80211W
2574         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2575                    "dropped: " MACSTR " -> " MACSTR
2576                    " (reason code %u)",
2577                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2578         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2579 #endif /* CONFIG_IEEE80211W */
2580 }
2581
2582
2583 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2584                                   u16 reason_code, int locally_generated,
2585                                   const u8 *ie, size_t ie_len, int deauth)
2586 {
2587 #ifdef CONFIG_AP
2588         if (wpa_s->ap_iface && addr) {
2589                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2590                 return;
2591         }
2592
2593         if (wpa_s->ap_iface) {
2594                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2595                 return;
2596         }
2597 #endif /* CONFIG_AP */
2598
2599         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2600
2601         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2602               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2603                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2604                eapol_sm_failed(wpa_s->eapol))) &&
2605              !wpa_s->eap_expected_failure))
2606                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2607
2608 #ifdef CONFIG_P2P
2609         if (deauth && reason_code > 0) {
2610                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2611                                           locally_generated) > 0) {
2612                         /*
2613                          * The interface was removed, so cannot continue
2614                          * processing any additional operations after this.
2615                          */
2616                         return;
2617                 }
2618         }
2619 #endif /* CONFIG_P2P */
2620
2621         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2622                                              locally_generated);
2623 }
2624
2625
2626 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2627                                 struct disassoc_info *info)
2628 {
2629         u16 reason_code = 0;
2630         int locally_generated = 0;
2631         const u8 *addr = NULL;
2632         const u8 *ie = NULL;
2633         size_t ie_len = 0;
2634
2635         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2636
2637         if (info) {
2638                 addr = info->addr;
2639                 ie = info->ie;
2640                 ie_len = info->ie_len;
2641                 reason_code = info->reason_code;
2642                 locally_generated = info->locally_generated;
2643                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2644                         locally_generated ? " (locally generated)" : "");
2645                 if (addr)
2646                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2647                                 MAC2STR(addr));
2648                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2649                             ie, ie_len);
2650         }
2651
2652 #ifdef CONFIG_AP
2653         if (wpa_s->ap_iface && info && info->addr) {
2654                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2655                 return;
2656         }
2657
2658         if (wpa_s->ap_iface) {
2659                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2660                 return;
2661         }
2662 #endif /* CONFIG_AP */
2663
2664 #ifdef CONFIG_P2P
2665         if (info) {
2666                 wpas_p2p_disassoc_notif(
2667                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2668                         locally_generated);
2669         }
2670 #endif /* CONFIG_P2P */
2671
2672         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2673                 sme_event_disassoc(wpa_s, info);
2674
2675         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2676                               ie, ie_len, 0);
2677 }
2678
2679
2680 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2681                               struct deauth_info *info)
2682 {
2683         u16 reason_code = 0;
2684         int locally_generated = 0;
2685         const u8 *addr = NULL;
2686         const u8 *ie = NULL;
2687         size_t ie_len = 0;
2688
2689         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2690
2691         if (info) {
2692                 addr = info->addr;
2693                 ie = info->ie;
2694                 ie_len = info->ie_len;
2695                 reason_code = info->reason_code;
2696                 locally_generated = info->locally_generated;
2697                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2698                         reason_code,
2699                         locally_generated ? " (locally generated)" : "");
2700                 if (addr) {
2701                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2702                                 MAC2STR(addr));
2703                 }
2704                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2705                             ie, ie_len);
2706         }
2707
2708         wpa_reset_ft_completed(wpa_s->wpa);
2709
2710         wpas_event_disconnect(wpa_s, addr, reason_code,
2711                               locally_generated, ie, ie_len, 1);
2712 }
2713
2714
2715 static const char * reg_init_str(enum reg_change_initiator init)
2716 {
2717         switch (init) {
2718         case REGDOM_SET_BY_CORE:
2719                 return "CORE";
2720         case REGDOM_SET_BY_USER:
2721                 return "USER";
2722         case REGDOM_SET_BY_DRIVER:
2723                 return "DRIVER";
2724         case REGDOM_SET_BY_COUNTRY_IE:
2725                 return "COUNTRY_IE";
2726         case REGDOM_BEACON_HINT:
2727                 return "BEACON_HINT";
2728         }
2729         return "?";
2730 }
2731
2732
2733 static const char * reg_type_str(enum reg_type type)
2734 {
2735         switch (type) {
2736         case REGDOM_TYPE_UNKNOWN:
2737                 return "UNKNOWN";
2738         case REGDOM_TYPE_COUNTRY:
2739                 return "COUNTRY";
2740         case REGDOM_TYPE_WORLD:
2741                 return "WORLD";
2742         case REGDOM_TYPE_CUSTOM_WORLD:
2743                 return "CUSTOM_WORLD";
2744         case REGDOM_TYPE_INTERSECTION:
2745                 return "INTERSECTION";
2746         }
2747         return "?";
2748 }
2749
2750
2751 static void wpa_supplicant_update_channel_list(
2752         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
2753 {
2754         struct wpa_supplicant *ifs;
2755
2756         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
2757                 reg_init_str(info->initiator), reg_type_str(info->type),
2758                 info->alpha2[0] ? " alpha2=" : "",
2759                 info->alpha2[0] ? info->alpha2 : "");
2760
2761         if (wpa_s->drv_priv == NULL)
2762                 return; /* Ignore event during drv initialization */
2763
2764         free_hw_features(wpa_s);
2765         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2766                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2767
2768         wpas_p2p_update_channel_list(wpa_s);
2769
2770         /*
2771          * Check other interfaces to see if they share the same radio. If
2772          * so, they get updated with this same hw mode info.
2773          */
2774         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2775                          radio_list) {
2776                 if (ifs != wpa_s) {
2777                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2778                                    ifs->ifname);
2779                         free_hw_features(ifs);
2780                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2781                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2782                 }
2783         }
2784 }
2785
2786
2787 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2788                                       const u8 *frame, size_t len, int freq)
2789 {
2790         const struct ieee80211_mgmt *mgmt;
2791         const u8 *payload;
2792         size_t plen;
2793         u8 category;
2794
2795         if (len < IEEE80211_HDRLEN + 2)
2796                 return;
2797
2798         mgmt = (const struct ieee80211_mgmt *) frame;
2799         payload = frame + IEEE80211_HDRLEN;
2800         category = *payload++;
2801         plen = len - IEEE80211_HDRLEN - 1;
2802
2803         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2804                 " Category=%u DataLen=%d freq=%d MHz",
2805                 MAC2STR(mgmt->sa), category, (int) plen, freq);
2806
2807         if (category == WLAN_ACTION_WMM) {
2808                 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
2809                 return;
2810         }
2811
2812 #ifdef CONFIG_IEEE80211R
2813         if (category == WLAN_ACTION_FT) {
2814                 ft_rx_action(wpa_s, payload, plen);
2815                 return;
2816         }
2817 #endif /* CONFIG_IEEE80211R */
2818
2819 #ifdef CONFIG_IEEE80211W
2820 #ifdef CONFIG_SME
2821         if (category == WLAN_ACTION_SA_QUERY) {
2822                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2823                 return;
2824         }
2825 #endif /* CONFIG_SME */
2826 #endif /* CONFIG_IEEE80211W */
2827
2828 #ifdef CONFIG_WNM
2829         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2830                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2831                 return;
2832         }
2833 #endif /* CONFIG_WNM */
2834
2835 #ifdef CONFIG_GAS
2836         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2837              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2838             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2839                          mgmt->u.action.category,
2840                          payload, plen, freq) == 0)
2841                 return;
2842 #endif /* CONFIG_GAS */
2843
2844 #ifdef CONFIG_TDLS
2845         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2846             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2847                 wpa_dbg(wpa_s, MSG_DEBUG,
2848                         "TDLS: Received Discovery Response from " MACSTR,
2849                         MAC2STR(mgmt->sa));
2850                 return;
2851         }
2852 #endif /* CONFIG_TDLS */
2853
2854 #ifdef CONFIG_INTERWORKING
2855         if (category == WLAN_ACTION_QOS && plen >= 1 &&
2856             payload[0] == QOS_QOS_MAP_CONFIG) {
2857                 const u8 *pos = payload + 1;
2858                 size_t qlen = plen - 1;
2859                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2860                         MACSTR, MAC2STR(mgmt->sa));
2861                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2862                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2863                     pos[1] <= qlen - 2 && pos[1] >= 16)
2864                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2865                 return;
2866         }
2867 #endif /* CONFIG_INTERWORKING */
2868
2869         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
2870             payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
2871                 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
2872                 return;
2873         }
2874
2875         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2876                            category, payload, plen, freq);
2877         if (wpa_s->ifmsh)
2878                 mesh_mpm_action_rx(wpa_s, mgmt, len);
2879 }
2880
2881
2882 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2883                                              union wpa_event_data *event)
2884 {
2885 #ifdef CONFIG_P2P
2886         struct wpa_supplicant *ifs;
2887 #endif /* CONFIG_P2P */
2888         struct wpa_freq_range_list *list;
2889         char *str = NULL;
2890
2891         list = &event->freq_range;
2892
2893         if (list->num)
2894                 str = freq_range_list_str(list);
2895         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2896                 str ? str : "");
2897
2898 #ifdef CONFIG_P2P
2899         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2900                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2901                         __func__);
2902         } else {
2903                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2904                 wpas_p2p_update_channel_list(wpa_s);
2905         }
2906
2907         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2908                 int freq;
2909                 if (!ifs->current_ssid ||
2910                     !ifs->current_ssid->p2p_group ||
2911                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
2912                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
2913                         continue;
2914
2915                 freq = ifs->current_ssid->frequency;
2916                 if (!freq_range_list_includes(list, freq)) {
2917                         wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
2918                                 freq);
2919                         continue;
2920                 }
2921
2922                 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
2923                         freq);
2924                 /* TODO: Consider using CSA or removing the group within
2925                  * wpa_supplicant */
2926                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
2927         }
2928 #endif /* CONFIG_P2P */
2929
2930         os_free(str);
2931 }
2932
2933
2934 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
2935                                             union wpa_event_data *data)
2936 {
2937         wpa_dbg(wpa_s, MSG_DEBUG,
2938                 "Connection authorized by device, previous state %d",
2939                 wpa_s->wpa_state);
2940         if (wpa_s->wpa_state == WPA_ASSOCIATED) {
2941                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2942                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2943                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2944                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2945         }
2946         wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
2947         wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
2948                                data->assoc_info.ptk_kek);
2949 }
2950
2951
2952 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2953                           union wpa_event_data *data)
2954 {
2955         struct wpa_supplicant *wpa_s = ctx;
2956
2957         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2958             event != EVENT_INTERFACE_ENABLED &&
2959             event != EVENT_INTERFACE_STATUS &&
2960             event != EVENT_SCHED_SCAN_STOPPED) {
2961                 wpa_dbg(wpa_s, MSG_DEBUG,
2962                         "Ignore event %s (%d) while interface is disabled",
2963                         event_to_string(event), event);
2964                 return;
2965         }
2966
2967 #ifndef CONFIG_NO_STDOUT_DEBUG
2968 {
2969         int level = MSG_DEBUG;
2970
2971         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2972                 const struct ieee80211_hdr *hdr;
2973                 u16 fc;
2974                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2975                 fc = le_to_host16(hdr->frame_control);
2976                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2977                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2978                         level = MSG_EXCESSIVE;
2979         }
2980
2981         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2982                 event_to_string(event), event);
2983 }
2984 #endif /* CONFIG_NO_STDOUT_DEBUG */
2985
2986         switch (event) {
2987         case EVENT_AUTH:
2988                 sme_event_auth(wpa_s, data);
2989                 break;
2990         case EVENT_ASSOC:
2991                 wpa_supplicant_event_assoc(wpa_s, data);
2992                 if (data && data->assoc_info.authorized)
2993                         wpa_supplicant_event_assoc_auth(wpa_s, data);
2994                 break;
2995         case EVENT_DISASSOC:
2996                 wpas_event_disassoc(wpa_s,
2997                                     data ? &data->disassoc_info : NULL);
2998                 break;
2999         case EVENT_DEAUTH:
3000                 wpas_event_deauth(wpa_s,
3001                                   data ? &data->deauth_info : NULL);
3002                 break;
3003         case EVENT_MICHAEL_MIC_FAILURE:
3004                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3005                 break;
3006 #ifndef CONFIG_NO_SCAN_PROCESSING
3007         case EVENT_SCAN_STARTED:
3008                 os_get_reltime(&wpa_s->scan_start_time);
3009                 if (wpa_s->own_scan_requested) {
3010                         struct os_reltime diff;
3011
3012                         os_reltime_sub(&wpa_s->scan_start_time,
3013                                        &wpa_s->scan_trigger_time, &diff);
3014                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3015                                 diff.sec, diff.usec);
3016                         wpa_s->own_scan_requested = 0;
3017                         wpa_s->own_scan_running = 1;
3018                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3019                             wpa_s->manual_scan_use_id) {
3020                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3021                                              WPA_EVENT_SCAN_STARTED "id=%u",
3022                                              wpa_s->manual_scan_id);
3023                         } else {
3024                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3025                                              WPA_EVENT_SCAN_STARTED);
3026                         }
3027                 } else {
3028                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3029                         wpa_s->external_scan_running = 1;
3030                         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3031                 }
3032                 break;
3033         case EVENT_SCAN_RESULTS:
3034                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
3035                         struct os_reltime now, diff;
3036                         os_get_reltime(&now);
3037                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3038                         wpa_s->scan_start_time.sec = 0;
3039                         wpa_s->scan_start_time.usec = 0;
3040                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3041                                 diff.sec, diff.usec);
3042                 }
3043                 wpa_supplicant_event_scan_results(wpa_s, data);
3044                 wpa_s->own_scan_running = 0;
3045                 wpa_s->external_scan_running = 0;
3046                 radio_work_check_next(wpa_s);
3047                 break;
3048 #endif /* CONFIG_NO_SCAN_PROCESSING */
3049         case EVENT_ASSOCINFO:
3050                 wpa_supplicant_event_associnfo(wpa_s, data);
3051                 break;
3052         case EVENT_INTERFACE_STATUS:
3053                 wpa_supplicant_event_interface_status(wpa_s, data);
3054                 break;
3055         case EVENT_PMKID_CANDIDATE:
3056                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3057                 break;
3058 #ifdef CONFIG_PEERKEY
3059         case EVENT_STKSTART:
3060                 wpa_supplicant_event_stkstart(wpa_s, data);
3061                 break;
3062 #endif /* CONFIG_PEERKEY */
3063 #ifdef CONFIG_TDLS
3064         case EVENT_TDLS:
3065                 wpa_supplicant_event_tdls(wpa_s, data);
3066                 break;
3067 #endif /* CONFIG_TDLS */
3068 #ifdef CONFIG_WNM
3069         case EVENT_WNM:
3070                 wpa_supplicant_event_wnm(wpa_s, data);
3071                 break;
3072 #endif /* CONFIG_WNM */
3073 #ifdef CONFIG_IEEE80211R
3074         case EVENT_FT_RESPONSE:
3075                 wpa_supplicant_event_ft_response(wpa_s, data);
3076                 break;
3077 #endif /* CONFIG_IEEE80211R */
3078 #ifdef CONFIG_IBSS_RSN
3079         case EVENT_IBSS_RSN_START:
3080                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3081                 break;
3082 #endif /* CONFIG_IBSS_RSN */
3083         case EVENT_ASSOC_REJECT:
3084                 if (data->assoc_reject.bssid)
3085                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3086                                 "bssid=" MACSTR " status_code=%u",
3087                                 MAC2STR(data->assoc_reject.bssid),
3088                                 data->assoc_reject.status_code);
3089                 else
3090                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3091                                 "status_code=%u",
3092                                 data->assoc_reject.status_code);
3093                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3094                         sme_event_assoc_reject(wpa_s, data);
3095                 else {
3096                         const u8 *bssid = data->assoc_reject.bssid;
3097                         if (bssid == NULL || is_zero_ether_addr(bssid))
3098                                 bssid = wpa_s->pending_bssid;
3099                         wpas_connection_failed(wpa_s, bssid);
3100                         wpa_supplicant_mark_disassoc(wpa_s);
3101                 }
3102                 break;
3103         case EVENT_AUTH_TIMED_OUT:
3104                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3105                         sme_event_auth_timed_out(wpa_s, data);
3106                 break;
3107         case EVENT_ASSOC_TIMED_OUT:
3108                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3109                         sme_event_assoc_timed_out(wpa_s, data);
3110                 break;
3111         case EVENT_TX_STATUS:
3112                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3113                         " type=%d stype=%d",
3114                         MAC2STR(data->tx_status.dst),
3115                         data->tx_status.type, data->tx_status.stype);
3116 #ifdef CONFIG_AP
3117                 if (wpa_s->ap_iface == NULL) {
3118 #ifdef CONFIG_OFFCHANNEL
3119                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3120                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3121                                 offchannel_send_action_tx_status(
3122                                         wpa_s, data->tx_status.dst,
3123                                         data->tx_status.data,
3124                                         data->tx_status.data_len,
3125                                         data->tx_status.ack ?
3126                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3127                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3128 #endif /* CONFIG_OFFCHANNEL */
3129                         break;
3130                 }
3131 #endif /* CONFIG_AP */
3132 #ifdef CONFIG_OFFCHANNEL
3133                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3134                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3135                 /*
3136                  * Catch TX status events for Action frames we sent via group
3137                  * interface in GO mode.
3138                  */
3139                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3140                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3141                     os_memcmp(wpa_s->parent->pending_action_dst,
3142                               data->tx_status.dst, ETH_ALEN) == 0) {
3143                         offchannel_send_action_tx_status(
3144                                 wpa_s->parent, data->tx_status.dst,
3145                                 data->tx_status.data,
3146                                 data->tx_status.data_len,
3147                                 data->tx_status.ack ?
3148                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3149                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3150                         break;
3151                 }
3152 #endif /* CONFIG_OFFCHANNEL */
3153 #ifdef CONFIG_AP
3154                 switch (data->tx_status.type) {
3155                 case WLAN_FC_TYPE_MGMT:
3156                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3157                                       data->tx_status.data_len,
3158                                       data->tx_status.stype,
3159                                       data->tx_status.ack);
3160                         break;
3161                 case WLAN_FC_TYPE_DATA:
3162                         ap_tx_status(wpa_s, data->tx_status.dst,
3163                                      data->tx_status.data,
3164                                      data->tx_status.data_len,
3165                                      data->tx_status.ack);
3166                         break;
3167                 }
3168 #endif /* CONFIG_AP */
3169                 break;
3170 #ifdef CONFIG_AP
3171         case EVENT_EAPOL_TX_STATUS:
3172                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3173                                    data->eapol_tx_status.data,
3174                                    data->eapol_tx_status.data_len,
3175                                    data->eapol_tx_status.ack);
3176                 break;
3177         case EVENT_DRIVER_CLIENT_POLL_OK:
3178                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3179                 break;
3180         case EVENT_RX_FROM_UNKNOWN:
3181                 if (wpa_s->ap_iface == NULL)
3182                         break;
3183                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3184                                        data->rx_from_unknown.wds);
3185                 break;
3186         case EVENT_CH_SWITCH:
3187                 if (!data)
3188                         break;
3189                 if (!wpa_s->ap_iface) {
3190                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3191                                 "event in non-AP mode");
3192                         break;
3193                 }
3194
3195                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3196                                   data->ch_switch.ht_enabled,
3197                                   data->ch_switch.ch_offset,
3198                                   data->ch_switch.ch_width,
3199                                   data->ch_switch.cf1,
3200                                   data->ch_switch.cf2);
3201                 break;
3202 #endif /* CONFIG_AP */
3203         case EVENT_RX_MGMT: {
3204                 u16 fc, stype;
3205                 const struct ieee80211_mgmt *mgmt;
3206
3207 #ifdef CONFIG_TESTING_OPTIONS
3208                 if (wpa_s->ext_mgmt_frame_handling) {
3209                         struct rx_mgmt *rx = &data->rx_mgmt;
3210                         size_t hex_len = 2 * rx->frame_len + 1;
3211                         char *hex = os_malloc(hex_len);
3212                         if (hex) {
3213                                 wpa_snprintf_hex(hex, hex_len,
3214                                                  rx->frame, rx->frame_len);
3215                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3216                                         rx->freq, rx->datarate, rx->ssi_signal,
3217                                         hex);
3218                                 os_free(hex);
3219                         }
3220                         break;
3221                 }
3222 #endif /* CONFIG_TESTING_OPTIONS */
3223
3224                 mgmt = (const struct ieee80211_mgmt *)
3225                         data->rx_mgmt.frame;
3226                 fc = le_to_host16(mgmt->frame_control);
3227                 stype = WLAN_FC_GET_STYPE(fc);
3228
3229 #ifdef CONFIG_AP
3230                 if (wpa_s->ap_iface == NULL) {
3231 #endif /* CONFIG_AP */
3232 #ifdef CONFIG_P2P
3233                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3234                             data->rx_mgmt.frame_len > 24) {
3235                                 const u8 *src = mgmt->sa;
3236                                 const u8 *ie = mgmt->u.probe_req.variable;
3237                                 size_t ie_len = data->rx_mgmt.frame_len -
3238                                         (mgmt->u.probe_req.variable -
3239                                          data->rx_mgmt.frame);
3240                                 wpas_p2p_probe_req_rx(
3241                                         wpa_s, src, mgmt->da,
3242                                         mgmt->bssid, ie, ie_len,
3243                                         data->rx_mgmt.ssi_signal);
3244                                 break;
3245                         }
3246 #endif /* CONFIG_P2P */
3247 #ifdef CONFIG_IBSS_RSN
3248                         if (wpa_s->current_ssid &&
3249                             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3250                             stype == WLAN_FC_STYPE_AUTH &&
3251                             data->rx_mgmt.frame_len >= 30) {
3252                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3253                                 break;
3254                         }
3255 #endif /* CONFIG_IBSS_RSN */
3256
3257                         if (stype == WLAN_FC_STYPE_ACTION) {
3258                                 wpas_event_rx_mgmt_action(
3259                                         wpa_s, data->rx_mgmt.frame,
3260                                         data->rx_mgmt.frame_len,
3261                                         data->rx_mgmt.freq);
3262                                 break;
3263                         }
3264
3265                         if (wpa_s->ifmsh) {
3266                                 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3267                                 break;
3268                         }
3269
3270                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3271                                 "management frame in non-AP mode");
3272                         break;
3273 #ifdef CONFIG_AP
3274                 }
3275
3276                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3277                     data->rx_mgmt.frame_len > 24) {
3278                         const u8 *ie = mgmt->u.probe_req.variable;
3279                         size_t ie_len = data->rx_mgmt.frame_len -
3280                                 (mgmt->u.probe_req.variable -
3281                                  data->rx_mgmt.frame);
3282
3283                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3284                                          mgmt->bssid, ie, ie_len,
3285                                          data->rx_mgmt.ssi_signal);
3286                 }
3287
3288                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3289 #endif /* CONFIG_AP */
3290                 break;
3291                 }
3292         case EVENT_RX_PROBE_REQ:
3293                 if (data->rx_probe_req.sa == NULL ||
3294                     data->rx_probe_req.ie == NULL)
3295                         break;
3296 #ifdef CONFIG_AP
3297                 if (wpa_s->ap_iface) {
3298                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3299                                              data->rx_probe_req.sa,
3300                                              data->rx_probe_req.da,
3301                                              data->rx_probe_req.bssid,
3302                                              data->rx_probe_req.ie,
3303                                              data->rx_probe_req.ie_len,
3304                                              data->rx_probe_req.ssi_signal);
3305                         break;
3306                 }
3307 #endif /* CONFIG_AP */
3308                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3309                                       data->rx_probe_req.da,
3310                                       data->rx_probe_req.bssid,
3311                                       data->rx_probe_req.ie,
3312                                       data->rx_probe_req.ie_len,
3313                                       data->rx_probe_req.ssi_signal);
3314                 break;
3315         case EVENT_REMAIN_ON_CHANNEL:
3316 #ifdef CONFIG_OFFCHANNEL
3317                 offchannel_remain_on_channel_cb(
3318                         wpa_s, data->remain_on_channel.freq,
3319                         data->remain_on_channel.duration);
3320 #endif /* CONFIG_OFFCHANNEL */
3321                 wpas_p2p_remain_on_channel_cb(
3322                         wpa_s, data->remain_on_channel.freq,
3323                         data->remain_on_channel.duration);
3324                 break;
3325         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3326 #ifdef CONFIG_OFFCHANNEL
3327                 offchannel_cancel_remain_on_channel_cb(
3328                         wpa_s, data->remain_on_channel.freq);
3329 #endif /* CONFIG_OFFCHANNEL */
3330                 wpas_p2p_cancel_remain_on_channel_cb(
3331                         wpa_s, data->remain_on_channel.freq);
3332                 break;
3333         case EVENT_EAPOL_RX:
3334                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3335                                         data->eapol_rx.data,
3336                                         data->eapol_rx.data_len);
3337                 break;
3338         case EVENT_SIGNAL_CHANGE:
3339                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3340                         "above=%d signal=%d noise=%d txrate=%d",
3341                         data->signal_change.above_threshold,
3342                         data->signal_change.current_signal,
3343                         data->signal_change.current_noise,
3344                         data->signal_change.current_txrate);
3345                 bgscan_notify_signal_change(
3346                         wpa_s, data->signal_change.above_threshold,
3347                         data->signal_change.current_signal,
3348                         data->signal_change.current_noise,
3349                         data->signal_change.current_txrate);
3350                 break;
3351         case EVENT_INTERFACE_ENABLED:
3352                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3353                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3354                         wpa_supplicant_update_mac_addr(wpa_s);
3355                         if (wpa_s->p2p_mgmt) {
3356                                 wpa_supplicant_set_state(wpa_s,
3357                                                          WPA_DISCONNECTED);
3358                                 break;
3359                         }
3360
3361 #ifdef CONFIG_AP
3362                         if (!wpa_s->ap_iface) {
3363                                 wpa_supplicant_set_state(wpa_s,
3364                                                          WPA_DISCONNECTED);
3365                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3366                         } else
3367                                 wpa_supplicant_set_state(wpa_s,
3368                                                          WPA_COMPLETED);
3369 #else /* CONFIG_AP */
3370                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3371                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3372 #endif /* CONFIG_AP */
3373                 }
3374                 break;
3375         case EVENT_INTERFACE_DISABLED:
3376                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3377 #ifdef CONFIG_P2P
3378                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3379                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3380                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3381                         /*
3382                          * The interface was externally disabled. Remove
3383                          * it assuming an external entity will start a
3384                          * new session if needed.
3385                          */
3386                         wpas_p2p_disconnect(wpa_s);
3387                         break;
3388                 }
3389                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3390                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3391                         /* This radio work will be cancelled, so clear P2P
3392                          * state as well.
3393                          */
3394                         p2p_stop_find(wpa_s->global->p2p);
3395                 }
3396 #endif /* CONFIG_P2P */
3397
3398                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3399                         /*
3400                          * Indicate disconnection to keep ctrl_iface events
3401                          * consistent.
3402                          */
3403                         wpa_supplicant_event_disassoc(
3404                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3405                 }
3406                 wpa_supplicant_mark_disassoc(wpa_s);
3407                 radio_remove_works(wpa_s, NULL, 0);
3408
3409                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3410                 break;
3411         case EVENT_CHANNEL_LIST_CHANGED:
3412                 wpa_supplicant_update_channel_list(
3413                         wpa_s, &data->channel_list_changed);
3414                 break;
3415         case EVENT_INTERFACE_UNAVAILABLE:
3416                 wpas_p2p_interface_unavailable(wpa_s);
3417                 break;
3418         case EVENT_BEST_CHANNEL:
3419                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3420                         "(%d %d %d)",
3421                         data->best_chan.freq_24, data->best_chan.freq_5,
3422                         data->best_chan.freq_overall);
3423                 wpa_s->best_24_freq = data->best_chan.freq_24;
3424                 wpa_s->best_5_freq = data->best_chan.freq_5;
3425                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3426                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3427                                               data->best_chan.freq_5,
3428                                               data->best_chan.freq_overall);
3429                 break;
3430         case EVENT_UNPROT_DEAUTH:
3431                 wpa_supplicant_event_unprot_deauth(wpa_s,
3432                                                    &data->unprot_deauth);
3433                 break;
3434         case EVENT_UNPROT_DISASSOC:
3435                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3436                                                      &data->unprot_disassoc);
3437                 break;
3438         case EVENT_STATION_LOW_ACK:
3439 #ifdef CONFIG_AP
3440                 if (wpa_s->ap_iface && data)
3441                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3442                                                   data->low_ack.addr);
3443 #endif /* CONFIG_AP */
3444 #ifdef CONFIG_TDLS
3445                 if (data)
3446                         wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3447                                                           data->low_ack.addr);
3448 #endif /* CONFIG_TDLS */
3449                 break;
3450         case EVENT_IBSS_PEER_LOST:
3451 #ifdef CONFIG_IBSS_RSN
3452                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3453 #endif /* CONFIG_IBSS_RSN */
3454                 break;
3455         case EVENT_DRIVER_GTK_REKEY:
3456                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3457                               wpa_s->bssid, ETH_ALEN))
3458                         break;
3459                 if (!wpa_s->wpa)
3460                         break;
3461                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3462                                          data->driver_gtk_rekey.replay_ctr);
3463                 break;
3464         case EVENT_SCHED_SCAN_STOPPED:
3465                 wpa_s->pno = 0;
3466                 wpa_s->sched_scanning = 0;
3467                 wpa_supplicant_notify_scanning(wpa_s, 0);
3468
3469                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3470                         break;
3471
3472                 /*
3473                  * Start a new sched scan to continue searching for more SSIDs
3474                  * either if timed out or PNO schedule scan is pending.
3475                  */
3476                 if (wpa_s->sched_scan_timed_out) {
3477                         wpa_supplicant_req_sched_scan(wpa_s);
3478                 } else if (wpa_s->pno_sched_pending) {
3479                         wpa_s->pno_sched_pending = 0;
3480                         wpas_start_pno(wpa_s);
3481                 }
3482
3483                 break;
3484         case EVENT_WPS_BUTTON_PUSHED:
3485 #ifdef CONFIG_WPS
3486                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3487 #endif /* CONFIG_WPS */
3488                 break;
3489         case EVENT_AVOID_FREQUENCIES:
3490                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3491                 break;
3492         case EVENT_CONNECT_FAILED_REASON:
3493 #ifdef CONFIG_AP
3494                 if (!wpa_s->ap_iface || !data)
3495                         break;
3496                 hostapd_event_connect_failed_reason(
3497                         wpa_s->ap_iface->bss[0],
3498                         data->connect_failed_reason.addr,
3499                         data->connect_failed_reason.code);
3500 #endif /* CONFIG_AP */
3501                 break;
3502         case EVENT_NEW_PEER_CANDIDATE:
3503 #ifdef CONFIG_MESH
3504                 if (!wpa_s->ifmsh || !data)
3505                         break;
3506                 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
3507                                      data->mesh_peer.ies,
3508                                      data->mesh_peer.ie_len);
3509 #endif /* CONFIG_MESH */
3510                 break;
3511         default:
3512                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3513                 break;
3514         }
3515 }