wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eapol_supp/eapol_supp_sm.h"
  13 #include "rsn_supp/wpa.h"
  14 #include "eloop.h"
  15 #include "config.h"
  16 #include "l2_packet/l2_packet.h"
  17 #include "wpa_supplicant_i.h"
  18 #include "driver_i.h"
  19 #include "pcsc_funcs.h"
  20 #include "rsn_supp/preauth.h"
  21 #include "rsn_supp/pmksa_cache.h"
  22 #include "common/wpa_ctrl.h"
  23 #include "eap_peer/eap.h"
  24 #include "ap/hostapd.h"
  25 #include "p2p/p2p.h"
  26 #include "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
 179                 /*
 180                  * It is possible that the device is sched scanning, which means
 181                  * that a connection attempt will be done only when we receive
 182                  * scan results. However, in this case, it would be preferable
 183                  * to scan and connect immediately, so cancel the sched_scan and
 184                  * issue a regular scan flow.
 185                  */
 186                 wpa_supplicant_cancel_sched_scan(wpa_s);
 187                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 188         }
 189 }
 190
 191
 192 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 193 {
 194         int bssid_changed;
 195
 196         wnm_bss_keep_alive_deinit(wpa_s);
 197
 198 #ifdef CONFIG_IBSS_RSN
 199         ibss_rsn_deinit(wpa_s->ibss_rsn);
 200         wpa_s->ibss_rsn = NULL;
 201 #endif /* CONFIG_IBSS_RSN */
 202
 203 #ifdef CONFIG_AP
 204         wpa_supplicant_ap_deinit(wpa_s);
 205 #endif /* CONFIG_AP */
 206
 207         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 208                 return;
 209
 210         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 211         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 212         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 213         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 214         sme_clear_on_disassoc(wpa_s);
 215 #ifdef CONFIG_P2P
 216         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 217 #endif /* CONFIG_P2P */
 218         wpa_s->current_bss = NULL;
 219         wpa_s->assoc_freq = 0;
 220
 221         if (bssid_changed)
 222                 wpas_notify_bssid_changed(wpa_s);
 223
 224         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 225         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 226         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 227                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 228         wpa_s->ap_ies_from_associnfo = 0;
 229         wpa_s->current_ssid = NULL;
 230         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 231         wpa_s->key_mgmt = 0;
 232
 233         wpas_rrm_reset(wpa_s);
 234 }
 235
 236
 237 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 238 {
 239         struct wpa_ie_data ie;
 240         int pmksa_set = -1;
 241         size_t i;
 242
 243         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 244             ie.pmkid == NULL)
 245                 return;
 246
 247         for (i = 0; i < ie.num_pmkid; i++) {
 248                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 249                                                     ie.pmkid + i * PMKID_LEN,
 250                                                     NULL, NULL, 0);
 251                 if (pmksa_set == 0) {
 252                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
 253                         break;
 254                 }
 255         }
 256
 257         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 258                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 259 }
 260
 261
 262 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 263                                                  union wpa_event_data *data)
 264 {
 265         if (data == NULL) {
 266                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 267                         "event");
 268                 return;
 269         }
 270         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 271                 " index=%d preauth=%d",
 272                 MAC2STR(data->pmkid_candidate.bssid),
 273                 data->pmkid_candidate.index,
 274                 data->pmkid_candidate.preauth);
 275
 276         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 277                             data->pmkid_candidate.index,
 278                             data->pmkid_candidate.preauth);
 279 }
 280
 281
 282 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 283 {
 284         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 285             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 286                 return 0;
 287
 288 #ifdef IEEE8021X_EAPOL
 289         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 290             wpa_s->current_ssid &&
 291             !(wpa_s->current_ssid->eapol_flags &
 292               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 293                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 294                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 295                  * plaintext or static WEP keys). */
 296                 return 0;
 297         }
 298 #endif /* IEEE8021X_EAPOL */
 299
 300         return 1;
 301 }
 302
 303
 304 /**
 305  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 306  * @wpa_s: pointer to wpa_supplicant data
 307  * @ssid: Configuration data for the network
 308  * Returns: 0 on success, -1 on failure
 309  *
 310  * This function is called when starting authentication with a network that is
 311  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 312  */
 313 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 314                               struct wpa_ssid *ssid)
 315 {
 316 #ifdef IEEE8021X_EAPOL
 317 #ifdef PCSC_FUNCS
 318         int aka = 0, sim = 0;
 319
 320         if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
 321             wpa_s->scard != NULL || wpa_s->conf->external_sim)
 322                 return 0;
 323
 324         if (ssid == NULL || ssid->eap.eap_methods == NULL) {
 325                 sim = 1;
 326                 aka = 1;
 327         } else {
 328                 struct eap_method_type *eap = ssid->eap.eap_methods;
 329                 while (eap->vendor != EAP_VENDOR_IETF ||
 330                        eap->method != EAP_TYPE_NONE) {
 331                         if (eap->vendor == EAP_VENDOR_IETF) {
 332                                 if (eap->method == EAP_TYPE_SIM)
 333                                         sim = 1;
 334                                 else if (eap->method == EAP_TYPE_AKA ||
 335                                          eap->method == EAP_TYPE_AKA_PRIME)
 336                                         aka = 1;
 337                         }
 338                         eap++;
 339                 }
 340         }
 341
 342         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 343                 sim = 0;
 344         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 345             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 346             NULL)
 347                 aka = 0;
 348
 349         if (!sim && !aka) {
 350                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 351                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 352                         "enabled");
 353                 return 0;
 354         }
 355
 356         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 357                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 358
 359         wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
 360         if (wpa_s->scard == NULL) {
 361                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 362                         "(pcsc-lite)");
 363                 return -1;
 364         }
 365         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 366         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 367 #endif /* PCSC_FUNCS */
 368 #endif /* IEEE8021X_EAPOL */
 369
 370         return 0;
 371 }
 372
 373
 374 #ifndef CONFIG_NO_SCAN_PROCESSING
 375
 376 static int has_wep_key(struct wpa_ssid *ssid)
 377 {
 378         int i;
 379
 380         for (i = 0; i < NUM_WEP_KEYS; i++) {
 381                 if (ssid->wep_key_len[i])
 382                         return 1;
 383         }
 384
 385         return 0;
 386 }
 387
 388
 389 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 390                                         struct wpa_ssid *ssid)
 391 {
 392         int privacy = 0;
 393
 394         if (ssid->mixed_cell)
 395                 return 1;
 396
 397 #ifdef CONFIG_WPS
 398         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 399                 return 1;
 400 #endif /* CONFIG_WPS */
 401
 402         if (has_wep_key(ssid))
 403                 privacy = 1;
 404
 405 #ifdef IEEE8021X_EAPOL
 406         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 407             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 408                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 409                 privacy = 1;
 410 #endif /* IEEE8021X_EAPOL */
 411
 412         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 413                 privacy = 1;
 414
 415         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 416                 privacy = 1;
 417
 418         if (bss->caps & IEEE80211_CAP_PRIVACY)
 419                 return privacy;
 420         return !privacy;
 421 }
 422
 423
 424 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 425                                          struct wpa_ssid *ssid,
 426                                          struct wpa_bss *bss)
 427 {
 428         struct wpa_ie_data ie;
 429         int proto_match = 0;
 430         const u8 *rsn_ie, *wpa_ie;
 431         int ret;
 432         int wep_ok;
 433
 434         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 435         if (ret >= 0)
 436                 return ret;
 437
 438         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 439         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 440                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 441                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 442                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 443
 444         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 445         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 446                 proto_match++;
 447
 448                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 449                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 450                                 "failed");
 451                         break;
 452                 }
 453
 454                 if (wep_ok &&
 455                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 456                 {
 457                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 458                                 "in RSN IE");
 459                         return 1;
 460                 }
 461
 462                 if (!(ie.proto & ssid->proto)) {
 463                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 464                                 "mismatch");
 465                         break;
 466                 }
 467
 468                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 469                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 470                                 "cipher mismatch");
 471                         break;
 472                 }
 473
 474                 if (!(ie.group_cipher & ssid->group_cipher)) {
 475                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 476                                 "cipher mismatch");
 477                         break;
 478                 }
 479
 480                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 481                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 482                                 "mismatch");
 483                         break;
 484                 }
 485
 486 #ifdef CONFIG_IEEE80211W
 487                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 488                     wpas_get_ssid_pmf(wpa_s, ssid) ==
 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,
 682                                         "   hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)",
 683                                         r / 10, r % 10,
 684                                         bss->freq, mode->mode, mode->num_rates);
 685                                 return 0;
 686                         }
 687                 }
 688         }
 689
 690         return 1;
 691 }
 692
 693
 694 /*
 695  * Test whether BSS is in an ESS.
 696  * This is done differently in DMG (60 GHz) and non-DMG bands
 697  */
 698 static int bss_is_ess(struct wpa_bss *bss)
 699 {
 700         if (bss_is_dmg(bss)) {
 701                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 702                         IEEE80211_CAP_DMG_AP;
 703         }
 704
 705         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 706                 IEEE80211_CAP_ESS);
 707 }
 708
 709
 710 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
 711 {
 712         size_t i;
 713
 714         for (i = 0; i < ETH_ALEN; i++) {
 715                 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
 716                         return 0;
 717         }
 718         return 1;
 719 }
 720
 721
 722 static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
 723 {
 724         size_t i;
 725
 726         for (i = 0; i < num; i++) {
 727                 const u8 *a = list + i * ETH_ALEN * 2;
 728                 const u8 *m = a + ETH_ALEN;
 729
 730                 if (match_mac_mask(a, addr, m))
 731                         return 1;
 732         }
 733         return 0;
 734 }
 735
 736
 737 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 738                                             int i, struct wpa_bss *bss,
 739                                             struct wpa_ssid *group,
 740                                             int only_first_ssid)
 741 {
 742         u8 wpa_ie_len, rsn_ie_len;
 743         int wpa;
 744         struct wpa_blacklist *e;
 745         const u8 *ie;
 746         struct wpa_ssid *ssid;
 747         int osen;
 748
 749         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 750         wpa_ie_len = ie ? ie[1] : 0;
 751
 752         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 753         rsn_ie_len = ie ? ie[1] : 0;
 754
 755         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 756         osen = ie != NULL;
 757
 758         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 759                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
 760                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 761                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 762                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 763                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 764                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 765                 " p2p" : "",
 766                 osen ? " osen=1" : "");
 767
 768         e = wpa_blacklist_get(wpa_s, bss->bssid);
 769         if (e) {
 770                 int limit = 1;
 771                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 772                         /*
 773                          * When only a single network is enabled, we can
 774                          * trigger blacklisting on the first failure. This
 775                          * should not be done with multiple enabled networks to
 776                          * avoid getting forced to move into a worse ESS on
 777                          * single error if there are no other BSSes of the
 778                          * current ESS.
 779                          */
 780                         limit = 0;
 781                 }
 782                 if (e->count > limit) {
 783                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 784                                 "(count=%d limit=%d)", e->count, limit);
 785                         return NULL;
 786                 }
 787         }
 788
 789         if (bss->ssid_len == 0) {
 790                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 791                 return NULL;
 792         }
 793
 794         if (disallowed_bssid(wpa_s, bss->bssid)) {
 795                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 796                 return NULL;
 797         }
 798
 799         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 800                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 801                 return NULL;
 802         }
 803
 804         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 805
 806         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 807                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 808                 int res;
 809
 810                 if (wpas_network_disabled(wpa_s, ssid)) {
 811                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 812                         continue;
 813                 }
 814
 815                 res = wpas_temp_disabled(wpa_s, ssid);
 816                 if (res > 0) {
 817                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 818                                 "temporarily for %d second(s)", res);
 819                         continue;
 820                 }
 821
 822 #ifdef CONFIG_WPS
 823                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 824                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 825                                 "(WPS)");
 826                         continue;
 827                 }
 828
 829                 if (wpa && ssid->ssid_len == 0 &&
 830                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 831                         check_ssid = 0;
 832
 833                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 834                         /* Only allow wildcard SSID match if an AP
 835                          * advertises active WPS operation that matches
 836                          * with our mode. */
 837                         check_ssid = 1;
 838                         if (ssid->ssid_len == 0 &&
 839                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 840                                 check_ssid = 0;
 841                 }
 842 #endif /* CONFIG_WPS */
 843
 844                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 845                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 846                         check_ssid = 0;
 847
 848                 if (check_ssid &&
 849                     (bss->ssid_len != ssid->ssid_len ||
 850                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 851                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 852                         continue;
 853                 }
 854
 855                 if (ssid->bssid_set &&
 856                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 857                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 858                         continue;
 859                 }
 860
 861                 /* check blacklist */
 862                 if (ssid->num_bssid_blacklist &&
 863                     addr_in_list(bss->bssid, ssid->bssid_blacklist,
 864                                  ssid->num_bssid_blacklist)) {
 865                         wpa_dbg(wpa_s, MSG_DEBUG,
 866                                 "   skip - BSSID blacklisted");
 867                         continue;
 868                 }
 869
 870                 /* if there is a whitelist, only accept those APs */
 871                 if (ssid->num_bssid_whitelist &&
 872                     !addr_in_list(bss->bssid, ssid->bssid_whitelist,
 873                                   ssid->num_bssid_whitelist)) {
 874                         wpa_dbg(wpa_s, MSG_DEBUG,
 875                                 "   skip - BSSID not in whitelist");
 876                         continue;
 877                 }
 878
 879                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 880                         continue;
 881
 882                 if (!osen && !wpa &&
 883                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 884                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 885                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 886                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 887                                 "not allowed");
 888                         continue;
 889                 }
 890
 891                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 892                     has_wep_key(ssid)) {
 893                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 894                         continue;
 895                 }
 896
 897                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
 898                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
 899                                 "not allowed");
 900                         continue;
 901                 }
 902
 903                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 904                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 905                                 "mismatch");
 906                         continue;
 907                 }
 908
 909                 if (!bss_is_ess(bss)) {
 910                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 911                         continue;
 912                 }
 913
 914                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 915                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 916                                 "allowed");
 917                         continue;
 918                 }
 919
 920                 if (!rate_match(wpa_s, bss)) {
 921                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 922                                 "not match");
 923                         continue;
 924                 }
 925
 926 #ifdef CONFIG_P2P
 927                 if (ssid->p2p_group &&
 928                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 929                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 930                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
 931                         continue;
 932                 }
 933
 934                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
 935                         struct wpabuf *p2p_ie;
 936                         u8 dev_addr[ETH_ALEN];
 937
 938                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
 939                         if (ie == NULL) {
 940                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
 941                                 continue;
 942                         }
 943                         p2p_ie = wpa_bss_get_vendor_ie_multi(
 944                                 bss, P2P_IE_VENDOR_TYPE);
 945                         if (p2p_ie == NULL) {
 946                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
 947                                 continue;
 948                         }
 949
 950                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
 951                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
 952                                          ETH_ALEN) != 0) {
 953                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
 954                                 wpabuf_free(p2p_ie);
 955                                 continue;
 956                         }
 957                         wpabuf_free(p2p_ie);
 958                 }
 959
 960                 /*
 961                  * TODO: skip the AP if its P2P IE has Group Formation
 962                  * bit set in the P2P Group Capability Bitmap and we
 963                  * are not in Group Formation with that device.
 964                  */
 965 #endif /* CONFIG_P2P */
 966
 967                 /* Matching configuration found */
 968                 return ssid;
 969         }
 970
 971         /* No matching configuration found */
 972         return NULL;
 973 }
 974
 975
 976 static struct wpa_bss *
 977 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 978                           struct wpa_ssid *group,
 979                           struct wpa_ssid **selected_ssid,
 980                           int only_first_ssid)
 981 {
 982         unsigned int i;
 983
 984         if (only_first_ssid)
 985                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
 986                         group->id);
 987         else
 988                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 989                         group->priority);
 990
 991         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 992                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 993                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
 994                                                     only_first_ssid);
 995                 if (!*selected_ssid)
 996                         continue;
 997                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 998                         " ssid='%s'",
 999                         MAC2STR(bss->bssid),
1000                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
1001                 return bss;
1002         }
1003
1004         return NULL;
1005 }
1006
1007
1008 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1009                                              struct wpa_ssid **selected_ssid)
1010 {
1011         struct wpa_bss *selected = NULL;
1012         int prio;
1013         struct wpa_ssid *next_ssid = NULL;
1014
1015         if (wpa_s->last_scan_res == NULL ||
1016             wpa_s->last_scan_res_used == 0)
1017                 return NULL; /* no scan results from last update */
1018
1019         if (wpa_s->next_ssid) {
1020                 struct wpa_ssid *ssid;
1021
1022                 /* check that next_ssid is still valid */
1023                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1024                         if (ssid == wpa_s->next_ssid)
1025                                 break;
1026                 }
1027                 next_ssid = ssid;
1028                 wpa_s->next_ssid = NULL;
1029         }
1030
1031         while (selected == NULL) {
1032                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1033                         if (next_ssid && next_ssid->priority ==
1034                             wpa_s->conf->pssid[prio]->priority) {
1035                                 selected = wpa_supplicant_select_bss(
1036                                         wpa_s, next_ssid, selected_ssid, 1);
1037                                 if (selected)
1038                                         break;
1039                         }
1040                         selected = wpa_supplicant_select_bss(
1041                                 wpa_s, wpa_s->conf->pssid[prio],
1042                                 selected_ssid, 0);
1043                         if (selected)
1044                                 break;
1045                 }
1046
1047                 if (selected == NULL && wpa_s->blacklist &&
1048                     !wpa_s->countermeasures) {
1049                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1050                                 "blacklist and try again");
1051                         wpa_blacklist_clear(wpa_s);
1052                         wpa_s->blacklist_cleared++;
1053                 } else if (selected == NULL)
1054                         break;
1055         }
1056
1057         return selected;
1058 }
1059
1060
1061 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1062                                         int timeout_sec, int timeout_usec)
1063 {
1064         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1065                 /*
1066                  * No networks are enabled; short-circuit request so
1067                  * we don't wait timeout seconds before transitioning
1068                  * to INACTIVE state.
1069                  */
1070                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1071                         "since there are no enabled networks");
1072                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1073                 return;
1074         }
1075
1076         wpa_s->scan_for_connection = 1;
1077         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1078 }
1079
1080
1081 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1082                            struct wpa_bss *selected,
1083                            struct wpa_ssid *ssid)
1084 {
1085         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1086                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1087                         "PBC session overlap");
1088 #ifdef CONFIG_P2P
1089                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1090                     wpa_s->p2p_in_provisioning) {
1091                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1092                                                wpa_s, NULL);
1093                         return -1;
1094                 }
1095 #endif /* CONFIG_P2P */
1096
1097 #ifdef CONFIG_WPS
1098                 wpas_wps_cancel(wpa_s);
1099 #endif /* CONFIG_WPS */
1100                 return -1;
1101         }
1102
1103         wpa_msg(wpa_s, MSG_DEBUG,
1104                 "Considering connect request: reassociate: %d  selected: "
1105                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1106                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1107                 wpa_s->reassociate, MAC2STR(selected->bssid),
1108                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1109                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1110                 ssid, wpa_s->current_ssid);
1111
1112         /*
1113          * Do not trigger new association unless the BSSID has changed or if
1114          * reassociation is requested. If we are in process of associating with
1115          * the selected BSSID, do not trigger new attempt.
1116          */
1117         if (wpa_s->reassociate ||
1118             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1119              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1120                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1121               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1122                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1123                0) ||
1124               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1125                ssid != wpa_s->current_ssid)))) {
1126                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1127                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1128                         return 0;
1129                 }
1130                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1131                         MAC2STR(selected->bssid));
1132                 wpa_supplicant_associate(wpa_s, selected, ssid);
1133         } else {
1134                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1135                         "connect with the selected AP");
1136         }
1137
1138         return 0;
1139 }
1140
1141
1142 static struct wpa_ssid *
1143 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1144 {
1145         int prio;
1146         struct wpa_ssid *ssid;
1147
1148         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1149                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1150                 {
1151                         if (wpas_network_disabled(wpa_s, ssid))
1152                                 continue;
1153                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1154                             ssid->mode == IEEE80211_MODE_AP ||
1155                             ssid->mode == IEEE80211_MODE_MESH)
1156                                 return ssid;
1157                 }
1158         }
1159         return NULL;
1160 }
1161
1162
1163 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1164  * on BSS added and BSS changed events */
1165 static void wpa_supplicant_rsn_preauth_scan_results(
1166         struct wpa_supplicant *wpa_s)
1167 {
1168         struct wpa_bss *bss;
1169
1170         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1171                 return;
1172
1173         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1174                 const u8 *ssid, *rsn;
1175
1176                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1177                 if (ssid == NULL)
1178                         continue;
1179
1180                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1181                 if (rsn == NULL)
1182                         continue;
1183
1184                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1185         }
1186
1187 }
1188
1189
1190 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1191                                        struct wpa_bss *selected,
1192                                        struct wpa_ssid *ssid)
1193 {
1194         struct wpa_bss *current_bss = NULL;
1195         int min_diff;
1196
1197         if (wpa_s->reassociate)
1198                 return 1; /* explicit request to reassociate */
1199         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1200                 return 1; /* we are not associated; continue */
1201         if (wpa_s->current_ssid == NULL)
1202                 return 1; /* unknown current SSID */
1203         if (wpa_s->current_ssid != ssid)
1204                 return 1; /* different network block */
1205
1206         if (wpas_driver_bss_selection(wpa_s))
1207                 return 0; /* Driver-based roaming */
1208
1209         if (wpa_s->current_ssid->ssid)
1210                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1211                                           wpa_s->current_ssid->ssid,
1212                                           wpa_s->current_ssid->ssid_len);
1213         if (!current_bss)
1214                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1215
1216         if (!current_bss)
1217                 return 1; /* current BSS not seen in scan results */
1218
1219         if (current_bss == selected)
1220                 return 0;
1221
1222         if (selected->last_update_idx > current_bss->last_update_idx)
1223                 return 1; /* current BSS not seen in the last scan */
1224
1225 #ifndef CONFIG_NO_ROAMING
1226         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1227         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
1228                 " level=%d snr=%d est_throughput=%u",
1229                 MAC2STR(current_bss->bssid), current_bss->level,
1230                 current_bss->snr, current_bss->est_throughput);
1231         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
1232                 " level=%d snr=%d est_throughput=%u",
1233                 MAC2STR(selected->bssid), selected->level,
1234                 selected->snr, selected->est_throughput);
1235
1236         if (wpa_s->current_ssid->bssid_set &&
1237             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1238             0) {
1239                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1240                         "has preferred BSSID");
1241                 return 1;
1242         }
1243
1244         if (selected->est_throughput > current_bss->est_throughput + 5000) {
1245                 wpa_dbg(wpa_s, MSG_DEBUG,
1246                         "Allow reassociation - selected BSS has better estimated throughput");
1247                 return 1;
1248         }
1249
1250         if (current_bss->level < 0 && current_bss->level > selected->level) {
1251                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1252                         "signal level");
1253                 return 0;
1254         }
1255
1256         min_diff = 2;
1257         if (current_bss->level < 0) {
1258                 if (current_bss->level < -85)
1259                         min_diff = 1;
1260                 else if (current_bss->level < -80)
1261                         min_diff = 2;
1262                 else if (current_bss->level < -75)
1263                         min_diff = 3;
1264                 else if (current_bss->level < -70)
1265                         min_diff = 4;
1266                 else
1267                         min_diff = 5;
1268         }
1269         if (abs(current_bss->level - selected->level) < min_diff) {
1270                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1271                         "in signal level");
1272                 return 0;
1273         }
1274
1275         return 1;
1276 #else /* CONFIG_NO_ROAMING */
1277         return 0;
1278 #endif /* CONFIG_NO_ROAMING */
1279 }
1280
1281
1282 /* Return != 0 if no scan results could be fetched or if scan results should not
1283  * be shared with other virtual interfaces. */
1284 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1285                                               union wpa_event_data *data,
1286                                               int own_request)
1287 {
1288         struct wpa_scan_results *scan_res = NULL;
1289         int ret = 0;
1290         int ap = 0;
1291 #ifndef CONFIG_NO_RANDOM_POOL
1292         size_t i, num;
1293 #endif /* CONFIG_NO_RANDOM_POOL */
1294
1295 #ifdef CONFIG_AP
1296         if (wpa_s->ap_iface)
1297                 ap = 1;
1298 #endif /* CONFIG_AP */
1299
1300         wpa_supplicant_notify_scanning(wpa_s, 0);
1301
1302         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1303                                                    data ? &data->scan_info :
1304                                                    NULL, 1);
1305         if (scan_res == NULL) {
1306                 if (wpa_s->conf->ap_scan == 2 || ap ||
1307                     wpa_s->scan_res_handler == scan_only_handler)
1308                         return -1;
1309                 if (!own_request)
1310                         return -1;
1311                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1312                         "scanning again");
1313                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1314                 ret = -1;
1315                 goto scan_work_done;
1316         }
1317
1318 #ifndef CONFIG_NO_RANDOM_POOL
1319         num = scan_res->num;
1320         if (num > 10)
1321                 num = 10;
1322         for (i = 0; i < num; i++) {
1323                 u8 buf[5];
1324                 struct wpa_scan_res *res = scan_res->res[i];
1325                 buf[0] = res->bssid[5];
1326                 buf[1] = res->qual & 0xff;
1327                 buf[2] = res->noise & 0xff;
1328                 buf[3] = res->level & 0xff;
1329                 buf[4] = res->tsf & 0xff;
1330                 random_add_randomness(buf, sizeof(buf));
1331         }
1332 #endif /* CONFIG_NO_RANDOM_POOL */
1333
1334         if (own_request && wpa_s->scan_res_handler &&
1335             (wpa_s->own_scan_running || !wpa_s->radio->external_scan_running)) {
1336                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1337                                          struct wpa_scan_results *scan_res);
1338
1339                 scan_res_handler = wpa_s->scan_res_handler;
1340                 wpa_s->scan_res_handler = NULL;
1341                 scan_res_handler(wpa_s, scan_res);
1342                 ret = -2;
1343                 goto scan_work_done;
1344         }
1345
1346         if (ap) {
1347                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1348 #ifdef CONFIG_AP
1349                 if (wpa_s->ap_iface->scan_cb)
1350                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1351 #endif /* CONFIG_AP */
1352                 goto scan_work_done;
1353         }
1354
1355         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1356                 wpa_s->own_scan_running, wpa_s->radio->external_scan_running);
1357         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1358             wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1359                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1360                              wpa_s->manual_scan_id);
1361                 wpa_s->manual_scan_use_id = 0;
1362         } else {
1363                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1364         }
1365         wpas_notify_scan_results(wpa_s);
1366
1367         wpas_notify_scan_done(wpa_s, 1);
1368
1369         if (!wpa_s->own_scan_running && wpa_s->radio->external_scan_running) {
1370                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1371                 wpa_scan_results_free(scan_res);
1372                 return 0;
1373         }
1374
1375         if (wnm_scan_process(wpa_s, 1) > 0)
1376                 goto scan_work_done;
1377
1378         if (sme_proc_obss_scan(wpa_s) > 0)
1379                 goto scan_work_done;
1380
1381         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1382                 goto scan_work_done;
1383
1384         if (autoscan_notify_scan(wpa_s, scan_res))
1385                 goto scan_work_done;
1386
1387         if (wpa_s->disconnected) {
1388                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1389                 goto scan_work_done;
1390         }
1391
1392         if (!wpas_driver_bss_selection(wpa_s) &&
1393             bgscan_notify_scan(wpa_s, scan_res) == 1)
1394                 goto scan_work_done;
1395
1396         wpas_wps_update_ap_info(wpa_s, scan_res);
1397
1398         wpa_scan_results_free(scan_res);
1399
1400         if (wpa_s->scan_work) {
1401                 struct wpa_radio_work *work = wpa_s->scan_work;
1402                 wpa_s->scan_work = NULL;
1403                 radio_work_done(work);
1404         }
1405
1406         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1407
1408 scan_work_done:
1409         wpa_scan_results_free(scan_res);
1410         if (wpa_s->scan_work) {
1411                 struct wpa_radio_work *work = wpa_s->scan_work;
1412                 wpa_s->scan_work = NULL;
1413                 radio_work_done(work);
1414         }
1415         return ret;
1416 }
1417
1418
1419 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1420                                               int new_scan, int own_request)
1421 {
1422         struct wpa_bss *selected;
1423         struct wpa_ssid *ssid = NULL;
1424
1425         if (wpa_s->p2p_mgmt)
1426                 return 0; /* no normal connection on p2p_mgmt interface */
1427
1428         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1429
1430         if (selected) {
1431                 int skip;
1432                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1433                 if (skip) {
1434                         if (new_scan)
1435                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1436                         return 0;
1437                 }
1438
1439                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1440                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1441                         return -1;
1442                 }
1443                 if (new_scan)
1444                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1445                 /*
1446                  * Do not notify other virtual radios of scan results since we do not
1447                  * want them to start other associations at the same time.
1448                  */
1449                 return 1;
1450         } else {
1451 #ifdef CONFIG_MESH
1452                 if (wpa_s->ifmsh) {
1453                         wpa_msg(wpa_s, MSG_INFO,
1454                                 "Avoiding join because we already joined a mesh group");
1455                         return 0;
1456                 }
1457 #endif /* CONFIG_MESH */
1458                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1459                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1460                 if (ssid) {
1461                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1462                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1463                         if (new_scan)
1464                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1465                 } else if (own_request) {
1466                         /*
1467                          * No SSID found. If SCAN results are as a result of
1468                          * own scan request and not due to a scan request on
1469                          * another shared interface, try another scan.
1470                          */
1471                         int timeout_sec = wpa_s->scan_interval;
1472                         int timeout_usec = 0;
1473 #ifdef CONFIG_P2P
1474                         int res;
1475
1476                         res = wpas_p2p_scan_no_go_seen(wpa_s);
1477                         if (res == 2)
1478                                 return 2;
1479                         if (res == 1)
1480                                 return 0;
1481
1482                         if (wpa_s->p2p_in_provisioning ||
1483                             wpa_s->show_group_started ||
1484                             wpa_s->p2p_in_invitation) {
1485                                 /*
1486                                  * Use shorter wait during P2P Provisioning
1487                                  * state and during P2P join-a-group operation
1488                                  * to speed up group formation.
1489                                  */
1490                                 timeout_sec = 0;
1491                                 timeout_usec = 250000;
1492                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1493                                                             timeout_usec);
1494                                 return 0;
1495                         }
1496 #endif /* CONFIG_P2P */
1497 #ifdef CONFIG_INTERWORKING
1498                         if (wpa_s->conf->auto_interworking &&
1499                             wpa_s->conf->interworking &&
1500                             wpa_s->conf->cred) {
1501                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1502                                         "start ANQP fetch since no matching "
1503                                         "networks found");
1504                                 wpa_s->network_select = 1;
1505                                 wpa_s->auto_network_select = 1;
1506                                 interworking_start_fetch_anqp(wpa_s);
1507                                 return 1;
1508                         }
1509 #endif /* CONFIG_INTERWORKING */
1510 #ifdef CONFIG_WPS
1511                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1512                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1513                                 timeout_sec = 0;
1514                                 timeout_usec = 500000;
1515                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1516                                                             timeout_usec);
1517                                 return 0;
1518                         }
1519 #endif /* CONFIG_WPS */
1520                         if (wpa_supplicant_req_sched_scan(wpa_s))
1521                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1522                                                             timeout_usec);
1523                 }
1524         }
1525         return 0;
1526 }
1527
1528
1529 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1530                                              union wpa_event_data *data)
1531 {
1532         struct wpa_supplicant *ifs;
1533         int res;
1534
1535         res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1536         if (res == 2) {
1537                 /*
1538                  * Interface may have been removed, so must not dereference
1539                  * wpa_s after this.
1540                  */
1541                 return 1;
1542         }
1543         if (res != 0) {
1544                 /*
1545                  * If no scan results could be fetched, then no need to
1546                  * notify those interfaces that did not actually request
1547                  * this scan. Similarly, if scan results started a new operation on this
1548                  * interface, do not notify other interfaces to avoid concurrent
1549                  * operations during a connection attempt.
1550                  */
1551                 return 0;
1552         }
1553
1554         /*
1555          * Check other interfaces to see if they share the same radio. If
1556          * so, they get updated with this same scan info.
1557          */
1558         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1559                          radio_list) {
1560                 if (ifs != wpa_s) {
1561                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1562                                    "sibling", ifs->ifname);
1563                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1564                 }
1565         }
1566
1567         return 0;
1568 }
1569
1570 #endif /* CONFIG_NO_SCAN_PROCESSING */
1571
1572
1573 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1574 {
1575 #ifdef CONFIG_NO_SCAN_PROCESSING
1576         return -1;
1577 #else /* CONFIG_NO_SCAN_PROCESSING */
1578         struct os_reltime now;
1579
1580         if (wpa_s->last_scan_res_used <= 0)
1581                 return -1;
1582
1583         os_get_reltime(&now);
1584         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1585                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1586                 return -1;
1587         }
1588
1589         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1590 #endif /* CONFIG_NO_SCAN_PROCESSING */
1591 }
1592
1593 #ifdef CONFIG_WNM
1594
1595 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1596 {
1597         struct wpa_supplicant *wpa_s = eloop_ctx;
1598
1599         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1600                 return;
1601
1602         if (!wpa_s->no_keep_alive) {
1603                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1604                            MAC2STR(wpa_s->bssid));
1605                 /* TODO: could skip this if normal data traffic has been sent */
1606                 /* TODO: Consider using some more appropriate data frame for
1607                  * this */
1608                 if (wpa_s->l2)
1609                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1610                                        (u8 *) "", 0);
1611         }
1612
1613 #ifdef CONFIG_SME
1614         if (wpa_s->sme.bss_max_idle_period) {
1615                 unsigned int msec;
1616                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1617                 if (msec > 100)
1618                         msec -= 100;
1619                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1620                                        wnm_bss_keep_alive, wpa_s, NULL);
1621         }
1622 #endif /* CONFIG_SME */
1623 }
1624
1625
1626 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1627                                    const u8 *ies, size_t ies_len)
1628 {
1629         struct ieee802_11_elems elems;
1630
1631         if (ies == NULL)
1632                 return;
1633
1634         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1635                 return;
1636
1637 #ifdef CONFIG_SME
1638         if (elems.bss_max_idle_period) {
1639                 unsigned int msec;
1640                 wpa_s->sme.bss_max_idle_period =
1641                         WPA_GET_LE16(elems.bss_max_idle_period);
1642                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1643                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1644                            (elems.bss_max_idle_period[2] & 0x01) ?
1645                            " (protected keep-live required)" : "");
1646                 if (wpa_s->sme.bss_max_idle_period == 0)
1647                         wpa_s->sme.bss_max_idle_period = 1;
1648                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1649                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1650                          /* msec times 1000 */
1651                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1652                         if (msec > 100)
1653                                 msec -= 100;
1654                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1655                                                wnm_bss_keep_alive, wpa_s,
1656                                                NULL);
1657                 }
1658         }
1659 #endif /* CONFIG_SME */
1660 }
1661
1662 #endif /* CONFIG_WNM */
1663
1664
1665 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1666 {
1667 #ifdef CONFIG_WNM
1668         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1669 #endif /* CONFIG_WNM */
1670 }
1671
1672
1673 #ifdef CONFIG_INTERWORKING
1674
1675 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1676                             size_t len)
1677 {
1678         int res;
1679
1680         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1681         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1682         if (res) {
1683                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1684         }
1685
1686         return res;
1687 }
1688
1689
1690 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1691                                             const u8 *ies, size_t ies_len)
1692 {
1693         struct ieee802_11_elems elems;
1694
1695         if (ies == NULL)
1696                 return;
1697
1698         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1699                 return;
1700
1701         if (elems.qos_map_set) {
1702                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1703                                  elems.qos_map_set_len);
1704         }
1705 }
1706
1707 #endif /* CONFIG_INTERWORKING */
1708
1709
1710 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1711                                           union wpa_event_data *data)
1712 {
1713         int l, len, found = 0, wpa_found, rsn_found;
1714         const u8 *p;
1715 #ifdef CONFIG_IEEE80211R
1716         u8 bssid[ETH_ALEN];
1717 #endif /* CONFIG_IEEE80211R */
1718
1719         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1720         if (data->assoc_info.req_ies)
1721                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1722                             data->assoc_info.req_ies_len);
1723         if (data->assoc_info.resp_ies) {
1724                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1725                             data->assoc_info.resp_ies_len);
1726 #ifdef CONFIG_TDLS
1727                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1728                                         data->assoc_info.resp_ies_len);
1729 #endif /* CONFIG_TDLS */
1730 #ifdef CONFIG_WNM
1731                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1732                                        data->assoc_info.resp_ies_len);
1733 #endif /* CONFIG_WNM */
1734 #ifdef CONFIG_INTERWORKING
1735                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1736                                                 data->assoc_info.resp_ies_len);
1737 #endif /* CONFIG_INTERWORKING */
1738         }
1739         if (data->assoc_info.beacon_ies)
1740                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1741                             data->assoc_info.beacon_ies,
1742                             data->assoc_info.beacon_ies_len);
1743         if (data->assoc_info.freq)
1744                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1745                         data->assoc_info.freq);
1746
1747         p = data->assoc_info.req_ies;
1748         l = data->assoc_info.req_ies_len;
1749
1750         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1751         while (p && l >= 2) {
1752                 len = p[1] + 2;
1753                 if (len > l) {
1754                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1755                                     p, l);
1756                         break;
1757                 }
1758                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1759                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1760                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1761                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1762                                 break;
1763                         found = 1;
1764                         wpa_find_assoc_pmkid(wpa_s);
1765                         break;
1766                 }
1767                 l -= len;
1768                 p += len;
1769         }
1770         if (!found && data->assoc_info.req_ies)
1771                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1772
1773 #ifdef CONFIG_IEEE80211R
1774 #ifdef CONFIG_SME
1775         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1776                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1777                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1778                                                  data->assoc_info.resp_ies,
1779                                                  data->assoc_info.resp_ies_len,
1780                                                  bssid) < 0) {
1781                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1782                                 "Reassociation Response failed");
1783                         wpa_supplicant_deauthenticate(
1784                                 wpa_s, WLAN_REASON_INVALID_IE);
1785                         return -1;
1786                 }
1787         }
1788
1789         p = data->assoc_info.resp_ies;
1790         l = data->assoc_info.resp_ies_len;
1791
1792 #ifdef CONFIG_WPS_STRICT
1793         if (p && wpa_s->current_ssid &&
1794             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1795                 struct wpabuf *wps;
1796                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1797                 if (wps == NULL) {
1798                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1799                                 "include WPS IE in (Re)Association Response");
1800                         return -1;
1801                 }
1802
1803                 if (wps_validate_assoc_resp(wps) < 0) {
1804                         wpabuf_free(wps);
1805                         wpa_supplicant_deauthenticate(
1806                                 wpa_s, WLAN_REASON_INVALID_IE);
1807                         return -1;
1808                 }
1809                 wpabuf_free(wps);
1810         }
1811 #endif /* CONFIG_WPS_STRICT */
1812
1813         /* Go through the IEs and make a copy of the MDIE, if present. */
1814         while (p && l >= 2) {
1815                 len = p[1] + 2;
1816                 if (len > l) {
1817                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1818                                     p, l);
1819                         break;
1820                 }
1821                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1822                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1823                         wpa_s->sme.ft_used = 1;
1824                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1825                                   MOBILITY_DOMAIN_ID_LEN);
1826                         break;
1827                 }
1828                 l -= len;
1829                 p += len;
1830         }
1831 #endif /* CONFIG_SME */
1832
1833         /* Process FT when SME is in the driver */
1834         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1835             wpa_ft_is_completed(wpa_s->wpa)) {
1836                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1837                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1838                                                  data->assoc_info.resp_ies,
1839                                                  data->assoc_info.resp_ies_len,
1840                                                  bssid) < 0) {
1841                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1842                                 "Reassociation Response failed");
1843                         wpa_supplicant_deauthenticate(
1844                                 wpa_s, WLAN_REASON_INVALID_IE);
1845                         return -1;
1846                 }
1847                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1848         }
1849
1850         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1851                              data->assoc_info.resp_ies_len);
1852 #endif /* CONFIG_IEEE80211R */
1853
1854         /* WPA/RSN IE from Beacon/ProbeResp */
1855         p = data->assoc_info.beacon_ies;
1856         l = data->assoc_info.beacon_ies_len;
1857
1858         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1859          */
1860         wpa_found = rsn_found = 0;
1861         while (p && l >= 2) {
1862                 len = p[1] + 2;
1863                 if (len > l) {
1864                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1865                                     p, l);
1866                         break;
1867                 }
1868                 if (!wpa_found &&
1869                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1870                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1871                         wpa_found = 1;
1872                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1873                 }
1874
1875                 if (!rsn_found &&
1876                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1877                         rsn_found = 1;
1878                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1879                 }
1880
1881                 l -= len;
1882                 p += len;
1883         }
1884
1885         if (!wpa_found && data->assoc_info.beacon_ies)
1886                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1887         if (!rsn_found && data->assoc_info.beacon_ies)
1888                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1889         if (wpa_found || rsn_found)
1890                 wpa_s->ap_ies_from_associnfo = 1;
1891
1892         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1893             wpa_s->assoc_freq != data->assoc_info.freq) {
1894                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1895                            "%u to %u MHz",
1896                            wpa_s->assoc_freq, data->assoc_info.freq);
1897                 wpa_supplicant_update_scan_results(wpa_s);
1898         }
1899
1900         wpa_s->assoc_freq = data->assoc_info.freq;
1901
1902         return 0;
1903 }
1904
1905
1906 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1907 {
1908         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1909
1910         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1911                 return -1;
1912
1913         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1914                 return 0;
1915
1916         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1917                                         WPA_IE_VENDOR_TYPE);
1918         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1919
1920         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1921                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1922             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1923                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1924                 return -1;
1925
1926         return 0;
1927 }
1928
1929
1930 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1931                                        union wpa_event_data *data)
1932 {
1933         u8 bssid[ETH_ALEN];
1934         int ft_completed;
1935
1936 #ifdef CONFIG_AP
1937         if (wpa_s->ap_iface) {
1938                 if (!data)
1939                         return;
1940                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1941                                     data->assoc_info.addr,
1942                                     data->assoc_info.req_ies,
1943                                     data->assoc_info.req_ies_len,
1944                                     data->assoc_info.reassoc);
1945                 return;
1946         }
1947 #endif /* CONFIG_AP */
1948
1949         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1950         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1951                 return;
1952
1953         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1954                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1955                 wpa_supplicant_deauthenticate(
1956                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1957                 return;
1958         }
1959
1960         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1961         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1962                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1963                         MACSTR, MAC2STR(bssid));
1964                 random_add_randomness(bssid, ETH_ALEN);
1965                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1966                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1967                 wpas_notify_bssid_changed(wpa_s);
1968
1969                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1970                         wpa_clear_keys(wpa_s, bssid);
1971                 }
1972                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1973                         wpa_supplicant_deauthenticate(
1974                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1975                         return;
1976                 }
1977
1978                 if (wpa_s->conf->ap_scan == 1 &&
1979                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1980                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1981                                 wpa_msg(wpa_s, MSG_WARNING,
1982                                         "WPA/RSN IEs not updated");
1983                 }
1984         }
1985
1986 #ifdef CONFIG_SME
1987         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1988         wpa_s->sme.prev_bssid_set = 1;
1989         wpa_s->sme.last_unprot_disconnect.sec = 0;
1990 #endif /* CONFIG_SME */
1991
1992         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1993         if (wpa_s->current_ssid) {
1994                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1995                  * initialized before association, but for other modes,
1996                  * initialize PC/SC here, if the current configuration needs
1997                  * smartcard or SIM/USIM. */
1998                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1999         }
2000         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
2001         if (wpa_s->l2)
2002                 l2_packet_notify_auth_start(wpa_s->l2);
2003
2004         /*
2005          * Set portEnabled first to FALSE in order to get EAP state machine out
2006          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
2007          * state machine may transit to AUTHENTICATING state based on obsolete
2008          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
2009          * AUTHENTICATED without ever giving chance to EAP state machine to
2010          * reset the state.
2011          */
2012         if (!ft_completed) {
2013                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2014                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2015         }
2016         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
2017                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2018         /* 802.1X::portControl = Auto */
2019         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2020         wpa_s->eapol_received = 0;
2021         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2022             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2023             (wpa_s->current_ssid &&
2024              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2025                 if (wpa_s->current_ssid &&
2026                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2027                     (wpa_s->drv_flags &
2028                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2029                         /*
2030                          * Set the key after having received joined-IBSS event
2031                          * from the driver.
2032                          */
2033                         wpa_supplicant_set_wpa_none_key(wpa_s,
2034                                                         wpa_s->current_ssid);
2035                 }
2036                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2037                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2038         } else if (!ft_completed) {
2039                 /* Timeout for receiving the first EAPOL packet */
2040                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2041         }
2042         wpa_supplicant_cancel_scan(wpa_s);
2043
2044         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2045             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2046                 /*
2047                  * We are done; the driver will take care of RSN 4-way
2048                  * handshake.
2049                  */
2050                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2051                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2052                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2053                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2054         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2055                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2056                 /*
2057                  * The driver will take care of RSN 4-way handshake, so we need
2058                  * to allow EAPOL supplicant to complete its work without
2059                  * waiting for WPA supplicant.
2060                  */
2061                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2062         } else if (ft_completed) {
2063                 /*
2064                  * FT protocol completed - make sure EAPOL state machine ends
2065                  * up in authenticated.
2066                  */
2067                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2068                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2069                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2070                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2071         }
2072
2073         wpa_s->last_eapol_matches_bssid = 0;
2074
2075         if (wpa_s->pending_eapol_rx) {
2076                 struct os_reltime now, age;
2077                 os_get_reltime(&now);
2078                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2079                 if (age.sec == 0 && age.usec < 100000 &&
2080                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2081                     0) {
2082                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2083                                 "frame that was received just before "
2084                                 "association notification");
2085                         wpa_supplicant_rx_eapol(
2086                                 wpa_s, wpa_s->pending_eapol_rx_src,
2087                                 wpabuf_head(wpa_s->pending_eapol_rx),
2088                                 wpabuf_len(wpa_s->pending_eapol_rx));
2089                 }
2090                 wpabuf_free(wpa_s->pending_eapol_rx);
2091                 wpa_s->pending_eapol_rx = NULL;
2092         }
2093
2094         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2095              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2096             wpa_s->current_ssid &&
2097             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2098                 /* Set static WEP keys again */
2099                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2100         }
2101
2102 #ifdef CONFIG_IBSS_RSN
2103         if (wpa_s->current_ssid &&
2104             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2105             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2106             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2107             wpa_s->ibss_rsn == NULL) {
2108                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2109                 if (!wpa_s->ibss_rsn) {
2110                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2111                         wpa_supplicant_deauthenticate(
2112                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2113                         return;
2114                 }
2115
2116                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2117         }
2118 #endif /* CONFIG_IBSS_RSN */
2119
2120         wpas_wps_notify_assoc(wpa_s, bssid);
2121
2122         if (data) {
2123                 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2124                                     data->assoc_info.resp_ies_len,
2125                                     &data->assoc_info.wmm_params);
2126
2127                 if (wpa_s->reassoc_same_bss)
2128                         wmm_ac_restore_tspecs(wpa_s);
2129         }
2130 }
2131
2132
2133 static int disconnect_reason_recoverable(u16 reason_code)
2134 {
2135         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2136                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2137                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2138 }
2139
2140
2141 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2142                                           u16 reason_code,
2143                                           int locally_generated)
2144 {
2145         const u8 *bssid;
2146
2147         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2148                 /*
2149                  * At least Host AP driver and a Prism3 card seemed to be
2150                  * generating streams of disconnected events when configuring
2151                  * IBSS for WPA-None. Ignore them for now.
2152                  */
2153                 return;
2154         }
2155
2156         bssid = wpa_s->bssid;
2157         if (is_zero_ether_addr(bssid))
2158                 bssid = wpa_s->pending_bssid;
2159
2160         if (!is_zero_ether_addr(bssid) ||
2161             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2162                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2163                         " reason=%d%s",
2164                         MAC2STR(bssid), reason_code,
2165                         locally_generated ? " locally_generated=1" : "");
2166         }
2167 }
2168
2169
2170 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2171                                  int locally_generated)
2172 {
2173         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2174             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2175                 return 0; /* Not in 4-way handshake with PSK */
2176
2177         /*
2178          * It looks like connection was lost while trying to go through PSK
2179          * 4-way handshake. Filter out known disconnection cases that are caused
2180          * by something else than PSK mismatch to avoid confusing reports.
2181          */
2182
2183         if (locally_generated) {
2184                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2185                         return 0;
2186         }
2187
2188         return 1;
2189 }
2190
2191
2192 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2193                                                  u16 reason_code,
2194                                                  int locally_generated)
2195 {
2196         const u8 *bssid;
2197         int authenticating;
2198         u8 prev_pending_bssid[ETH_ALEN];
2199         struct wpa_bss *fast_reconnect = NULL;
2200         struct wpa_ssid *fast_reconnect_ssid = NULL;
2201         struct wpa_ssid *last_ssid;
2202
2203         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2204         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2205
2206         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2207                 /*
2208                  * At least Host AP driver and a Prism3 card seemed to be
2209                  * generating streams of disconnected events when configuring
2210                  * IBSS for WPA-None. Ignore them for now.
2211                  */
2212                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2213                         "IBSS/WPA-None mode");
2214                 return;
2215         }
2216
2217         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2218                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2219                         "pre-shared key may be incorrect");
2220                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2221                         return; /* P2P group removed */
2222                 wpas_auth_failed(wpa_s, "WRONG_KEY");
2223         }
2224         if (!wpa_s->disconnected &&
2225             (!wpa_s->auto_reconnect_disabled ||
2226              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2227              wpas_wps_searching(wpa_s))) {
2228                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2229                         "reconnect (wps=%d/%d wpa_state=%d)",
2230                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2231                         wpas_wps_searching(wpa_s),
2232                         wpa_s->wpa_state);
2233                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2234                     wpa_s->current_ssid &&
2235                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2236                     !locally_generated &&
2237                     disconnect_reason_recoverable(reason_code)) {
2238                         /*
2239                          * It looks like the AP has dropped association with
2240                          * us, but could allow us to get back in. Try to
2241                          * reconnect to the same BSS without full scan to save
2242                          * time for some common cases.
2243                          */
2244                         fast_reconnect = wpa_s->current_bss;
2245                         fast_reconnect_ssid = wpa_s->current_ssid;
2246                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2247                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2248                 else
2249                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2250                                 "immediate scan");
2251         } else {
2252                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2253                         "try to re-connect");
2254                 wpa_s->reassociate = 0;
2255                 wpa_s->disconnected = 1;
2256                 wpa_supplicant_cancel_sched_scan(wpa_s);
2257         }
2258         bssid = wpa_s->bssid;
2259         if (is_zero_ether_addr(bssid))
2260                 bssid = wpa_s->pending_bssid;
2261         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2262                 wpas_connection_failed(wpa_s, bssid);
2263         wpa_sm_notify_disassoc(wpa_s->wpa);
2264         if (locally_generated)
2265                 wpa_s->disconnect_reason = -reason_code;
2266         else
2267                 wpa_s->disconnect_reason = reason_code;
2268         wpas_notify_disconnect_reason(wpa_s);
2269         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2270                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2271                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2272         }
2273         last_ssid = wpa_s->current_ssid;
2274         wpa_supplicant_mark_disassoc(wpa_s);
2275
2276         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2277                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2278                 wpa_s->current_ssid = last_ssid;
2279         }
2280
2281         if (fast_reconnect &&
2282             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2283             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2284             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2285                              fast_reconnect->ssid_len) &&
2286             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2287 #ifndef CONFIG_NO_SCAN_PROCESSING
2288                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2289                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2290                                            fast_reconnect_ssid) < 0) {
2291                         /* Recover through full scan */
2292                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2293                 }
2294 #endif /* CONFIG_NO_SCAN_PROCESSING */
2295         } else if (fast_reconnect) {
2296                 /*
2297                  * Could not reconnect to the same BSS due to network being
2298                  * disabled. Use a new scan to match the alternative behavior
2299                  * above, i.e., to continue automatic reconnection attempt in a
2300                  * way that enforces disabled network rules.
2301                  */
2302                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2303         }
2304 }
2305
2306
2307 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2308 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2309 {
2310         struct wpa_supplicant *wpa_s = eloop_ctx;
2311
2312         if (!wpa_s->pending_mic_error_report)
2313                 return;
2314
2315         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2316         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2317         wpa_s->pending_mic_error_report = 0;
2318 }
2319 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2320
2321
2322 static void
2323 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2324                                          union wpa_event_data *data)
2325 {
2326         int pairwise;
2327         struct os_reltime t;
2328
2329         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2330         pairwise = (data && data->michael_mic_failure.unicast);
2331         os_get_reltime(&t);
2332         if ((wpa_s->last_michael_mic_error.sec &&
2333              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2334             wpa_s->pending_mic_error_report) {
2335                 if (wpa_s->pending_mic_error_report) {
2336                         /*
2337                          * Send the pending MIC error report immediately since
2338                          * we are going to start countermeasures and AP better
2339                          * do the same.
2340                          */
2341                         wpa_sm_key_request(wpa_s->wpa, 1,
2342                                            wpa_s->pending_mic_error_pairwise);
2343                 }
2344
2345                 /* Send the new MIC error report immediately since we are going
2346                  * to start countermeasures and AP better do the same.
2347                  */
2348                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2349
2350                 /* initialize countermeasures */
2351                 wpa_s->countermeasures = 1;
2352
2353                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2354
2355                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2356
2357                 /*
2358                  * Need to wait for completion of request frame. We do not get
2359                  * any callback for the message completion, so just wait a
2360                  * short while and hope for the best. */
2361                 os_sleep(0, 10000);
2362
2363                 wpa_drv_set_countermeasures(wpa_s, 1);
2364                 wpa_supplicant_deauthenticate(wpa_s,
2365                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2366                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2367                                      wpa_s, NULL);
2368                 eloop_register_timeout(60, 0,
2369                                        wpa_supplicant_stop_countermeasures,
2370                                        wpa_s, NULL);
2371                 /* TODO: mark the AP rejected for 60 second. STA is
2372                  * allowed to associate with another AP.. */
2373         } else {
2374 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2375                 if (wpa_s->mic_errors_seen) {
2376                         /*
2377                          * Reduce the effectiveness of Michael MIC error
2378                          * reports as a means for attacking against TKIP if
2379                          * more than one MIC failure is noticed with the same
2380                          * PTK. We delay the transmission of the reports by a
2381                          * random time between 0 and 60 seconds in order to
2382                          * force the attacker wait 60 seconds before getting
2383                          * the information on whether a frame resulted in a MIC
2384                          * failure.
2385                          */
2386                         u8 rval[4];
2387                         int sec;
2388
2389                         if (os_get_random(rval, sizeof(rval)) < 0)
2390                                 sec = os_random() % 60;
2391                         else
2392                                 sec = WPA_GET_BE32(rval) % 60;
2393                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2394                                 "report %d seconds", sec);
2395                         wpa_s->pending_mic_error_report = 1;
2396                         wpa_s->pending_mic_error_pairwise = pairwise;
2397                         eloop_cancel_timeout(
2398                                 wpa_supplicant_delayed_mic_error_report,
2399                                 wpa_s, NULL);
2400                         eloop_register_timeout(
2401                                 sec, os_random() % 1000000,
2402                                 wpa_supplicant_delayed_mic_error_report,
2403                                 wpa_s, NULL);
2404                 } else {
2405                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2406                 }
2407 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2408                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2409 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2410         }
2411         wpa_s->last_michael_mic_error = t;
2412         wpa_s->mic_errors_seen++;
2413 }
2414
2415
2416 #ifdef CONFIG_TERMINATE_ONLASTIF
2417 static int any_interfaces(struct wpa_supplicant *head)
2418 {
2419         struct wpa_supplicant *wpa_s;
2420
2421         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2422                 if (!wpa_s->interface_removed)
2423                         return 1;
2424         return 0;
2425 }
2426 #endif /* CONFIG_TERMINATE_ONLASTIF */
2427
2428
2429 static void
2430 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2431                                       union wpa_event_data *data)
2432 {
2433         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2434                 return;
2435
2436         switch (data->interface_status.ievent) {
2437         case EVENT_INTERFACE_ADDED:
2438                 if (!wpa_s->interface_removed)
2439                         break;
2440                 wpa_s->interface_removed = 0;
2441                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2442                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2443                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2444                                 "driver after interface was added");
2445                 }
2446                 break;
2447         case EVENT_INTERFACE_REMOVED:
2448                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2449                 wpa_s->interface_removed = 1;
2450                 wpa_supplicant_mark_disassoc(wpa_s);
2451                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2452                 l2_packet_deinit(wpa_s->l2);
2453                 wpa_s->l2 = NULL;
2454 #ifdef CONFIG_TERMINATE_ONLASTIF
2455                 /* check if last interface */
2456                 if (!any_interfaces(wpa_s->global->ifaces))
2457                         eloop_terminate();
2458 #endif /* CONFIG_TERMINATE_ONLASTIF */
2459                 break;
2460         }
2461 }
2462
2463
2464 #ifdef CONFIG_PEERKEY
2465 static void
2466 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2467                               union wpa_event_data *data)
2468 {
2469         if (data == NULL)
2470                 return;
2471         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2472 }
2473 #endif /* CONFIG_PEERKEY */
2474
2475
2476 #ifdef CONFIG_TDLS
2477 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2478                                       union wpa_event_data *data)
2479 {
2480         if (data == NULL)
2481                 return;
2482         switch (data->tdls.oper) {
2483         case TDLS_REQUEST_SETUP:
2484                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2485                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2486                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2487                 else
2488                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2489                 break;
2490         case TDLS_REQUEST_TEARDOWN:
2491                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2492                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2493                                                data->tdls.reason_code);
2494                 else
2495                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2496                                           data->tdls.peer);
2497                 break;
2498         case TDLS_REQUEST_DISCOVER:
2499                         wpa_tdls_send_discovery_request(wpa_s->wpa,
2500                                                         data->tdls.peer);
2501                 break;
2502         }
2503 }
2504 #endif /* CONFIG_TDLS */
2505
2506
2507 #ifdef CONFIG_WNM
2508 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2509                                      union wpa_event_data *data)
2510 {
2511         if (data == NULL)
2512                 return;
2513         switch (data->wnm.oper) {
2514         case WNM_OPER_SLEEP:
2515                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2516                            "(action=%d, intval=%d)",
2517                            data->wnm.sleep_action, data->wnm.sleep_intval);
2518                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2519                                              data->wnm.sleep_intval, NULL);
2520                 break;
2521         }
2522 }
2523 #endif /* CONFIG_WNM */
2524
2525
2526 #ifdef CONFIG_IEEE80211R
2527 static void
2528 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2529                                  union wpa_event_data *data)
2530 {
2531         if (data == NULL)
2532                 return;
2533
2534         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2535                                     data->ft_ies.ies_len,
2536                                     data->ft_ies.ft_action,
2537                                     data->ft_ies.target_ap,
2538                                     data->ft_ies.ric_ies,
2539                                     data->ft_ies.ric_ies_len) < 0) {
2540                 /* TODO: prevent MLME/driver from trying to associate? */
2541         }
2542 }
2543 #endif /* CONFIG_IEEE80211R */
2544
2545
2546 #ifdef CONFIG_IBSS_RSN
2547 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2548                                                 union wpa_event_data *data)
2549 {
2550         struct wpa_ssid *ssid;
2551         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2552                 return;
2553         if (data == NULL)
2554                 return;
2555         ssid = wpa_s->current_ssid;
2556         if (ssid == NULL)
2557                 return;
2558         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2559                 return;
2560
2561         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2562 }
2563
2564
2565 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2566                                            union wpa_event_data *data)
2567 {
2568         struct wpa_ssid *ssid = wpa_s->current_ssid;
2569
2570         if (ssid == NULL)
2571                 return;
2572
2573         /* check if the ssid is correctly configured as IBSS/RSN */
2574         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2575                 return;
2576
2577         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2578                              data->rx_mgmt.frame_len);
2579 }
2580 #endif /* CONFIG_IBSS_RSN */
2581
2582
2583 #ifdef CONFIG_IEEE80211R
2584 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2585                          size_t len)
2586 {
2587         const u8 *sta_addr, *target_ap_addr;
2588         u16 status;
2589
2590         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2591         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2592                 return; /* only SME case supported for now */
2593         if (len < 1 + 2 * ETH_ALEN + 2)
2594                 return;
2595         if (data[0] != 2)
2596                 return; /* Only FT Action Response is supported for now */
2597         sta_addr = data + 1;
2598         target_ap_addr = data + 1 + ETH_ALEN;
2599         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2600         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2601                 MACSTR " TargetAP " MACSTR " status %u",
2602                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2603
2604         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2605                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2606                         " in FT Action Response", MAC2STR(sta_addr));
2607                 return;
2608         }
2609
2610         if (status) {
2611                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2612                         "failure (status code %d)", status);
2613                 /* TODO: report error to FT code(?) */
2614                 return;
2615         }
2616
2617         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2618                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2619                                     target_ap_addr, NULL, 0) < 0)
2620                 return;
2621
2622 #ifdef CONFIG_SME
2623         {
2624                 struct wpa_bss *bss;
2625                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2626                 if (bss)
2627                         wpa_s->sme.freq = bss->freq;
2628                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2629                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2630                               WLAN_AUTH_FT);
2631         }
2632 #endif /* CONFIG_SME */
2633 }
2634 #endif /* CONFIG_IEEE80211R */
2635
2636
2637 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2638                                                struct unprot_deauth *e)
2639 {
2640 #ifdef CONFIG_IEEE80211W
2641         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2642                    "dropped: " MACSTR " -> " MACSTR
2643                    " (reason code %u)",
2644                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2645         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2646 #endif /* CONFIG_IEEE80211W */
2647 }
2648
2649
2650 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2651                                                  struct unprot_disassoc *e)
2652 {
2653 #ifdef CONFIG_IEEE80211W
2654         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2655                    "dropped: " MACSTR " -> " MACSTR
2656                    " (reason code %u)",
2657                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2658         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2659 #endif /* CONFIG_IEEE80211W */
2660 }
2661
2662
2663 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2664                                   u16 reason_code, int locally_generated,
2665                                   const u8 *ie, size_t ie_len, int deauth)
2666 {
2667 #ifdef CONFIG_AP
2668         if (wpa_s->ap_iface && addr) {
2669                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2670                 return;
2671         }
2672
2673         if (wpa_s->ap_iface) {
2674                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2675                 return;
2676         }
2677 #endif /* CONFIG_AP */
2678
2679         if (!locally_generated)
2680                 wpa_s->own_disconnect_req = 0;
2681
2682         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2683
2684         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2685               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2686                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2687                eapol_sm_failed(wpa_s->eapol))) &&
2688              !wpa_s->eap_expected_failure))
2689                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2690
2691 #ifdef CONFIG_P2P
2692         if (deauth && reason_code > 0) {
2693                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2694                                           locally_generated) > 0) {
2695                         /*
2696                          * The interface was removed, so cannot continue
2697                          * processing any additional operations after this.
2698                          */
2699                         return;
2700                 }
2701         }
2702 #endif /* CONFIG_P2P */
2703
2704         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2705                                              locally_generated);
2706 }
2707
2708
2709 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2710                                 struct disassoc_info *info)
2711 {
2712         u16 reason_code = 0;
2713         int locally_generated = 0;
2714         const u8 *addr = NULL;
2715         const u8 *ie = NULL;
2716         size_t ie_len = 0;
2717
2718         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2719
2720         if (info) {
2721                 addr = info->addr;
2722                 ie = info->ie;
2723                 ie_len = info->ie_len;
2724                 reason_code = info->reason_code;
2725                 locally_generated = info->locally_generated;
2726                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2727                         locally_generated ? " (locally generated)" : "");
2728                 if (addr)
2729                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2730                                 MAC2STR(addr));
2731                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2732                             ie, ie_len);
2733         }
2734
2735 #ifdef CONFIG_AP
2736         if (wpa_s->ap_iface && info && info->addr) {
2737                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2738                 return;
2739         }
2740
2741         if (wpa_s->ap_iface) {
2742                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2743                 return;
2744         }
2745 #endif /* CONFIG_AP */
2746
2747 #ifdef CONFIG_P2P
2748         if (info) {
2749                 wpas_p2p_disassoc_notif(
2750                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2751                         locally_generated);
2752         }
2753 #endif /* CONFIG_P2P */
2754
2755         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2756                 sme_event_disassoc(wpa_s, info);
2757
2758         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2759                               ie, ie_len, 0);
2760 }
2761
2762
2763 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2764                               struct deauth_info *info)
2765 {
2766         u16 reason_code = 0;
2767         int locally_generated = 0;
2768         const u8 *addr = NULL;
2769         const u8 *ie = NULL;
2770         size_t ie_len = 0;
2771
2772         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2773
2774         if (info) {
2775                 addr = info->addr;
2776                 ie = info->ie;
2777                 ie_len = info->ie_len;
2778                 reason_code = info->reason_code;
2779                 locally_generated = info->locally_generated;
2780                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2781                         reason_code,
2782                         locally_generated ? " (locally generated)" : "");
2783                 if (addr) {
2784                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2785                                 MAC2STR(addr));
2786                 }
2787                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2788                             ie, ie_len);
2789         }
2790
2791         wpa_reset_ft_completed(wpa_s->wpa);
2792
2793         wpas_event_disconnect(wpa_s, addr, reason_code,
2794                               locally_generated, ie, ie_len, 1);
2795 }
2796
2797
2798 static const char * reg_init_str(enum reg_change_initiator init)
2799 {
2800         switch (init) {
2801         case REGDOM_SET_BY_CORE:
2802                 return "CORE";
2803         case REGDOM_SET_BY_USER:
2804                 return "USER";
2805         case REGDOM_SET_BY_DRIVER:
2806                 return "DRIVER";
2807         case REGDOM_SET_BY_COUNTRY_IE:
2808                 return "COUNTRY_IE";
2809         case REGDOM_BEACON_HINT:
2810                 return "BEACON_HINT";
2811         }
2812         return "?";
2813 }
2814
2815
2816 static const char * reg_type_str(enum reg_type type)
2817 {
2818         switch (type) {
2819         case REGDOM_TYPE_UNKNOWN:
2820                 return "UNKNOWN";
2821         case REGDOM_TYPE_COUNTRY:
2822                 return "COUNTRY";
2823         case REGDOM_TYPE_WORLD:
2824                 return "WORLD";
2825         case REGDOM_TYPE_CUSTOM_WORLD:
2826                 return "CUSTOM_WORLD";
2827         case REGDOM_TYPE_INTERSECTION:
2828                 return "INTERSECTION";
2829         }
2830         return "?";
2831 }
2832
2833
2834 static void wpa_supplicant_update_channel_list(
2835         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
2836 {
2837         struct wpa_supplicant *ifs;
2838
2839         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
2840                 reg_init_str(info->initiator), reg_type_str(info->type),
2841                 info->alpha2[0] ? " alpha2=" : "",
2842                 info->alpha2[0] ? info->alpha2 : "");
2843
2844         if (wpa_s->drv_priv == NULL)
2845                 return; /* Ignore event during drv initialization */
2846
2847         free_hw_features(wpa_s);
2848         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2849                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2850
2851         wpas_p2p_update_channel_list(wpa_s);
2852
2853         /*
2854          * Check other interfaces to see if they share the same radio. If
2855          * so, they get updated with this same hw mode info.
2856          */
2857         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2858                          radio_list) {
2859                 if (ifs != wpa_s) {
2860                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2861                                    ifs->ifname);
2862                         free_hw_features(ifs);
2863                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2864                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2865                 }
2866         }
2867 }
2868
2869
2870 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2871                                       const u8 *frame, size_t len, int freq,
2872                                       int rssi)
2873 {
2874         const struct ieee80211_mgmt *mgmt;
2875         const u8 *payload;
2876         size_t plen;
2877         u8 category;
2878
2879         if (len < IEEE80211_HDRLEN + 2)
2880                 return;
2881
2882         mgmt = (const struct ieee80211_mgmt *) frame;
2883         payload = frame + IEEE80211_HDRLEN;
2884         category = *payload++;
2885         plen = len - IEEE80211_HDRLEN - 1;
2886
2887         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2888                 " Category=%u DataLen=%d freq=%d MHz",
2889                 MAC2STR(mgmt->sa), category, (int) plen, freq);
2890
2891         if (category == WLAN_ACTION_WMM) {
2892                 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
2893                 return;
2894         }
2895
2896 #ifdef CONFIG_IEEE80211R
2897         if (category == WLAN_ACTION_FT) {
2898                 ft_rx_action(wpa_s, payload, plen);
2899                 return;
2900         }
2901 #endif /* CONFIG_IEEE80211R */
2902
2903 #ifdef CONFIG_IEEE80211W
2904 #ifdef CONFIG_SME
2905         if (category == WLAN_ACTION_SA_QUERY) {
2906                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2907                 return;
2908         }
2909 #endif /* CONFIG_SME */
2910 #endif /* CONFIG_IEEE80211W */
2911
2912 #ifdef CONFIG_WNM
2913         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2914                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2915                 return;
2916         }
2917 #endif /* CONFIG_WNM */
2918
2919 #ifdef CONFIG_GAS
2920         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2921              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2922             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2923                          mgmt->u.action.category,
2924                          payload, plen, freq) == 0)
2925                 return;
2926 #endif /* CONFIG_GAS */
2927
2928 #ifdef CONFIG_TDLS
2929         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2930             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2931                 wpa_dbg(wpa_s, MSG_DEBUG,
2932                         "TDLS: Received Discovery Response from " MACSTR,
2933                         MAC2STR(mgmt->sa));
2934                 return;
2935         }
2936 #endif /* CONFIG_TDLS */
2937
2938 #ifdef CONFIG_INTERWORKING
2939         if (category == WLAN_ACTION_QOS && plen >= 1 &&
2940             payload[0] == QOS_QOS_MAP_CONFIG) {
2941                 const u8 *pos = payload + 1;
2942                 size_t qlen = plen - 1;
2943                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2944                         MACSTR, MAC2STR(mgmt->sa));
2945                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2946                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2947                     pos[1] <= qlen - 2 && pos[1] >= 16)
2948                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2949                 return;
2950         }
2951 #endif /* CONFIG_INTERWORKING */
2952
2953         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
2954             payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
2955                 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
2956                 return;
2957         }
2958
2959         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
2960             payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
2961                 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
2962                                                          payload + 1, plen - 1,
2963                                                          rssi);
2964                 return;
2965         }
2966
2967         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2968                            category, payload, plen, freq);
2969         if (wpa_s->ifmsh)
2970                 mesh_mpm_action_rx(wpa_s, mgmt, len);
2971 }
2972
2973
2974 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2975                                              union wpa_event_data *event)
2976 {
2977 #ifdef CONFIG_P2P
2978         struct wpa_supplicant *ifs;
2979 #endif /* CONFIG_P2P */
2980         struct wpa_freq_range_list *list;
2981         char *str = NULL;
2982
2983         list = &event->freq_range;
2984
2985         if (list->num)
2986                 str = freq_range_list_str(list);
2987         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2988                 str ? str : "");
2989
2990 #ifdef CONFIG_P2P
2991         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2992                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2993                         __func__);
2994         } else {
2995                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2996                 wpas_p2p_update_channel_list(wpa_s);
2997         }
2998
2999         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3000                 int freq;
3001                 if (!ifs->current_ssid ||
3002                     !ifs->current_ssid->p2p_group ||
3003                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
3004                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
3005                         continue;
3006
3007                 freq = ifs->current_ssid->frequency;
3008                 if (!freq_range_list_includes(list, freq)) {
3009                         wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
3010                                 freq);
3011                         continue;
3012                 }
3013
3014                 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
3015                         freq);
3016                 /* TODO: Consider using CSA or removing the group within
3017                  * wpa_supplicant */
3018                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
3019         }
3020 #endif /* CONFIG_P2P */
3021
3022         os_free(str);
3023 }
3024
3025
3026 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3027                                             union wpa_event_data *data)
3028 {
3029         wpa_dbg(wpa_s, MSG_DEBUG,
3030                 "Connection authorized by device, previous state %d",
3031                 wpa_s->wpa_state);
3032         if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3033                 wpa_supplicant_cancel_auth_timeout(wpa_s);
3034                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3035                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3036                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3037         }
3038         wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3039         wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3040                                data->assoc_info.ptk_kck_len,
3041                                data->assoc_info.ptk_kek,
3042                                data->assoc_info.ptk_kek_len);
3043 }
3044
3045
3046 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3047                           union wpa_event_data *data)
3048 {
3049         struct wpa_supplicant *wpa_s = ctx;
3050
3051         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3052             event != EVENT_INTERFACE_ENABLED &&
3053             event != EVENT_INTERFACE_STATUS &&
3054             event != EVENT_SCHED_SCAN_STOPPED) {
3055                 wpa_dbg(wpa_s, MSG_DEBUG,
3056                         "Ignore event %s (%d) while interface is disabled",
3057                         event_to_string(event), event);
3058                 return;
3059         }
3060
3061 #ifndef CONFIG_NO_STDOUT_DEBUG
3062 {
3063         int level = MSG_DEBUG;
3064
3065         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3066                 const struct ieee80211_hdr *hdr;
3067                 u16 fc;
3068                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3069                 fc = le_to_host16(hdr->frame_control);
3070                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3071                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3072                         level = MSG_EXCESSIVE;
3073         }
3074
3075         wpa_dbg(wpa_s, level, "Event %s (%d) received",
3076                 event_to_string(event), event);
3077 }
3078 #endif /* CONFIG_NO_STDOUT_DEBUG */
3079
3080         switch (event) {
3081         case EVENT_AUTH:
3082                 sme_event_auth(wpa_s, data);
3083                 break;
3084         case EVENT_ASSOC:
3085                 wpa_supplicant_event_assoc(wpa_s, data);
3086                 if (data && data->assoc_info.authorized)
3087                         wpa_supplicant_event_assoc_auth(wpa_s, data);
3088                 break;
3089         case EVENT_DISASSOC:
3090                 wpas_event_disassoc(wpa_s,
3091                                     data ? &data->disassoc_info : NULL);
3092                 break;
3093         case EVENT_DEAUTH:
3094                 wpas_event_deauth(wpa_s,
3095                                   data ? &data->deauth_info : NULL);
3096                 break;
3097         case EVENT_MICHAEL_MIC_FAILURE:
3098                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3099                 break;
3100 #ifndef CONFIG_NO_SCAN_PROCESSING
3101         case EVENT_SCAN_STARTED:
3102                 os_get_reltime(&wpa_s->scan_start_time);
3103                 if (wpa_s->own_scan_requested) {
3104                         struct os_reltime diff;
3105
3106                         os_reltime_sub(&wpa_s->scan_start_time,
3107                                        &wpa_s->scan_trigger_time, &diff);
3108                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3109                                 diff.sec, diff.usec);
3110                         wpa_s->own_scan_requested = 0;
3111                         wpa_s->own_scan_running = 1;
3112                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3113                             wpa_s->manual_scan_use_id) {
3114                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3115                                              WPA_EVENT_SCAN_STARTED "id=%u",
3116                                              wpa_s->manual_scan_id);
3117                         } else {
3118                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3119                                              WPA_EVENT_SCAN_STARTED);
3120                         }
3121                 } else {
3122                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3123                         wpa_s->radio->external_scan_running = 1;
3124                         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3125                 }
3126                 break;
3127         case EVENT_SCAN_RESULTS:
3128                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
3129                         struct os_reltime now, diff;
3130                         os_get_reltime(&now);
3131                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3132                         wpa_s->scan_start_time.sec = 0;
3133                         wpa_s->scan_start_time.usec = 0;
3134                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3135                                 diff.sec, diff.usec);
3136                 }
3137                 if (wpa_supplicant_event_scan_results(wpa_s, data))
3138                         break; /* interface may have been removed */
3139                 wpa_s->own_scan_running = 0;
3140                 wpa_s->radio->external_scan_running = 0;
3141                 radio_work_check_next(wpa_s);
3142                 break;
3143 #endif /* CONFIG_NO_SCAN_PROCESSING */
3144         case EVENT_ASSOCINFO:
3145                 wpa_supplicant_event_associnfo(wpa_s, data);
3146                 break;
3147         case EVENT_INTERFACE_STATUS:
3148                 wpa_supplicant_event_interface_status(wpa_s, data);
3149                 break;
3150         case EVENT_PMKID_CANDIDATE:
3151                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3152                 break;
3153 #ifdef CONFIG_PEERKEY
3154         case EVENT_STKSTART:
3155                 wpa_supplicant_event_stkstart(wpa_s, data);
3156                 break;
3157 #endif /* CONFIG_PEERKEY */
3158 #ifdef CONFIG_TDLS
3159         case EVENT_TDLS:
3160                 wpa_supplicant_event_tdls(wpa_s, data);
3161                 break;
3162 #endif /* CONFIG_TDLS */
3163 #ifdef CONFIG_WNM
3164         case EVENT_WNM:
3165                 wpa_supplicant_event_wnm(wpa_s, data);
3166                 break;
3167 #endif /* CONFIG_WNM */
3168 #ifdef CONFIG_IEEE80211R
3169         case EVENT_FT_RESPONSE:
3170                 wpa_supplicant_event_ft_response(wpa_s, data);
3171                 break;
3172 #endif /* CONFIG_IEEE80211R */
3173 #ifdef CONFIG_IBSS_RSN
3174         case EVENT_IBSS_RSN_START:
3175                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3176                 break;
3177 #endif /* CONFIG_IBSS_RSN */
3178         case EVENT_ASSOC_REJECT:
3179                 if (data->assoc_reject.bssid)
3180                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3181                                 "bssid=" MACSTR " status_code=%u",
3182                                 MAC2STR(data->assoc_reject.bssid),
3183                                 data->assoc_reject.status_code);
3184                 else
3185                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3186                                 "status_code=%u",
3187                                 data->assoc_reject.status_code);
3188                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3189                         sme_event_assoc_reject(wpa_s, data);
3190                 else {
3191                         const u8 *bssid = data->assoc_reject.bssid;
3192                         if (bssid == NULL || is_zero_ether_addr(bssid))
3193                                 bssid = wpa_s->pending_bssid;
3194                         wpas_connection_failed(wpa_s, bssid);
3195                         wpa_supplicant_mark_disassoc(wpa_s);
3196                 }
3197                 break;
3198         case EVENT_AUTH_TIMED_OUT:
3199                 /* It is possible to get this event from earlier connection */
3200                 if (wpa_s->current_ssid &&
3201                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3202                         wpa_dbg(wpa_s, MSG_DEBUG,
3203                                 "Ignore AUTH_TIMED_OUT in mesh configuration");
3204                         break;
3205                 }
3206                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3207                         sme_event_auth_timed_out(wpa_s, data);
3208                 break;
3209         case EVENT_ASSOC_TIMED_OUT:
3210                 /* It is possible to get this event from earlier connection */
3211                 if (wpa_s->current_ssid &&
3212                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3213                         wpa_dbg(wpa_s, MSG_DEBUG,
3214                                 "Ignore ASSOC_TIMED_OUT in mesh configuration");
3215                         break;
3216                 }
3217                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3218                         sme_event_assoc_timed_out(wpa_s, data);
3219                 break;
3220         case EVENT_TX_STATUS:
3221                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3222                         " type=%d stype=%d",
3223                         MAC2STR(data->tx_status.dst),
3224                         data->tx_status.type, data->tx_status.stype);
3225 #ifdef CONFIG_AP
3226                 if (wpa_s->ap_iface == NULL) {
3227 #ifdef CONFIG_OFFCHANNEL
3228                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3229                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3230                                 offchannel_send_action_tx_status(
3231                                         wpa_s, data->tx_status.dst,
3232                                         data->tx_status.data,
3233                                         data->tx_status.data_len,
3234                                         data->tx_status.ack ?
3235                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3236                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3237 #endif /* CONFIG_OFFCHANNEL */
3238                         break;
3239                 }
3240 #endif /* CONFIG_AP */
3241 #ifdef CONFIG_OFFCHANNEL
3242                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3243                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3244                 /*
3245                  * Catch TX status events for Action frames we sent via group
3246                  * interface in GO mode.
3247                  */
3248                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3249                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3250                     os_memcmp(wpa_s->parent->pending_action_dst,
3251                               data->tx_status.dst, ETH_ALEN) == 0) {
3252                         offchannel_send_action_tx_status(
3253                                 wpa_s->parent, data->tx_status.dst,
3254                                 data->tx_status.data,
3255                                 data->tx_status.data_len,
3256                                 data->tx_status.ack ?
3257                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3258                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3259                         break;
3260                 }
3261 #endif /* CONFIG_OFFCHANNEL */
3262 #ifdef CONFIG_AP
3263                 switch (data->tx_status.type) {
3264                 case WLAN_FC_TYPE_MGMT:
3265                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3266                                       data->tx_status.data_len,
3267                                       data->tx_status.stype,
3268                                       data->tx_status.ack);
3269                         break;
3270                 case WLAN_FC_TYPE_DATA:
3271                         ap_tx_status(wpa_s, data->tx_status.dst,
3272                                      data->tx_status.data,
3273                                      data->tx_status.data_len,
3274                                      data->tx_status.ack);
3275                         break;
3276                 }
3277 #endif /* CONFIG_AP */
3278                 break;
3279 #ifdef CONFIG_AP
3280         case EVENT_EAPOL_TX_STATUS:
3281                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3282                                    data->eapol_tx_status.data,
3283                                    data->eapol_tx_status.data_len,
3284                                    data->eapol_tx_status.ack);
3285                 break;
3286         case EVENT_DRIVER_CLIENT_POLL_OK:
3287                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3288                 break;
3289         case EVENT_RX_FROM_UNKNOWN:
3290                 if (wpa_s->ap_iface == NULL)
3291                         break;
3292                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3293                                        data->rx_from_unknown.wds);
3294                 break;
3295         case EVENT_CH_SWITCH:
3296                 if (!data)
3297                         break;
3298                 if (!wpa_s->ap_iface) {
3299                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3300                                 "event in non-AP mode");
3301                         break;
3302                 }
3303
3304                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3305                                   data->ch_switch.ht_enabled,
3306                                   data->ch_switch.ch_offset,
3307                                   data->ch_switch.ch_width,
3308                                   data->ch_switch.cf1,
3309                                   data->ch_switch.cf2);
3310                 break;
3311 #ifdef NEED_AP_MLME
3312         case EVENT_DFS_RADAR_DETECTED:
3313                 if (data)
3314                         wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event);
3315                 break;
3316         case EVENT_DFS_CAC_STARTED:
3317                 if (data)
3318                         wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
3319                 break;
3320         case EVENT_DFS_CAC_FINISHED:
3321                 if (data)
3322                         wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
3323                 break;
3324         case EVENT_DFS_CAC_ABORTED:
3325                 if (data)
3326                         wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
3327                 break;
3328         case EVENT_DFS_NOP_FINISHED:
3329                 if (data)
3330                         wpas_event_dfs_cac_nop_finished(wpa_s,
3331                                                         &data->dfs_event);
3332                 break;
3333 #endif /* NEED_AP_MLME */
3334 #endif /* CONFIG_AP */
3335         case EVENT_RX_MGMT: {
3336                 u16 fc, stype;
3337                 const struct ieee80211_mgmt *mgmt;
3338
3339 #ifdef CONFIG_TESTING_OPTIONS
3340                 if (wpa_s->ext_mgmt_frame_handling) {
3341                         struct rx_mgmt *rx = &data->rx_mgmt;
3342                         size_t hex_len = 2 * rx->frame_len + 1;
3343                         char *hex = os_malloc(hex_len);
3344                         if (hex) {
3345                                 wpa_snprintf_hex(hex, hex_len,
3346                                                  rx->frame, rx->frame_len);
3347                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3348                                         rx->freq, rx->datarate, rx->ssi_signal,
3349                                         hex);
3350                                 os_free(hex);
3351                         }
3352                         break;
3353                 }
3354 #endif /* CONFIG_TESTING_OPTIONS */
3355
3356                 mgmt = (const struct ieee80211_mgmt *)
3357                         data->rx_mgmt.frame;
3358                 fc = le_to_host16(mgmt->frame_control);
3359                 stype = WLAN_FC_GET_STYPE(fc);
3360
3361 #ifdef CONFIG_AP
3362                 if (wpa_s->ap_iface == NULL) {
3363 #endif /* CONFIG_AP */
3364 #ifdef CONFIG_P2P
3365                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3366                             data->rx_mgmt.frame_len > 24) {
3367                                 const u8 *src = mgmt->sa;
3368                                 const u8 *ie = mgmt->u.probe_req.variable;
3369                                 size_t ie_len = data->rx_mgmt.frame_len -
3370                                         (mgmt->u.probe_req.variable -
3371                                          data->rx_mgmt.frame);
3372                                 wpas_p2p_probe_req_rx(
3373                                         wpa_s, src, mgmt->da,
3374                                         mgmt->bssid, ie, ie_len,
3375                                         data->rx_mgmt.ssi_signal);
3376                                 break;
3377                         }
3378 #endif /* CONFIG_P2P */
3379 #ifdef CONFIG_IBSS_RSN
3380                         if (wpa_s->current_ssid &&
3381                             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3382                             stype == WLAN_FC_STYPE_AUTH &&
3383                             data->rx_mgmt.frame_len >= 30) {
3384                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3385                                 break;
3386                         }
3387 #endif /* CONFIG_IBSS_RSN */
3388
3389                         if (stype == WLAN_FC_STYPE_ACTION) {
3390                                 wpas_event_rx_mgmt_action(
3391                                         wpa_s, data->rx_mgmt.frame,
3392                                         data->rx_mgmt.frame_len,
3393                                         data->rx_mgmt.freq,
3394                                         data->rx_mgmt.ssi_signal);
3395                                 break;
3396                         }
3397
3398                         if (wpa_s->ifmsh) {
3399                                 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3400                                 break;
3401                         }
3402
3403                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3404                                 "management frame in non-AP mode");
3405                         break;
3406 #ifdef CONFIG_AP
3407                 }
3408
3409                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3410                     data->rx_mgmt.frame_len > 24) {
3411                         const u8 *ie = mgmt->u.probe_req.variable;
3412                         size_t ie_len = data->rx_mgmt.frame_len -
3413                                 (mgmt->u.probe_req.variable -
3414                                  data->rx_mgmt.frame);
3415
3416                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3417                                          mgmt->bssid, ie, ie_len,
3418                                          data->rx_mgmt.ssi_signal);
3419                 }
3420
3421                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3422 #endif /* CONFIG_AP */
3423                 break;
3424                 }
3425         case EVENT_RX_PROBE_REQ:
3426                 if (data->rx_probe_req.sa == NULL ||
3427                     data->rx_probe_req.ie == NULL)
3428                         break;
3429 #ifdef CONFIG_AP
3430                 if (wpa_s->ap_iface) {
3431                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3432                                              data->rx_probe_req.sa,
3433                                              data->rx_probe_req.da,
3434                                              data->rx_probe_req.bssid,
3435                                              data->rx_probe_req.ie,
3436                                              data->rx_probe_req.ie_len,
3437                                              data->rx_probe_req.ssi_signal);
3438                         break;
3439                 }
3440 #endif /* CONFIG_AP */
3441                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3442                                       data->rx_probe_req.da,
3443                                       data->rx_probe_req.bssid,
3444                                       data->rx_probe_req.ie,
3445                                       data->rx_probe_req.ie_len,
3446                                       data->rx_probe_req.ssi_signal);
3447                 break;
3448         case EVENT_REMAIN_ON_CHANNEL:
3449 #ifdef CONFIG_OFFCHANNEL
3450                 offchannel_remain_on_channel_cb(
3451                         wpa_s, data->remain_on_channel.freq,
3452                         data->remain_on_channel.duration);
3453 #endif /* CONFIG_OFFCHANNEL */
3454                 wpas_p2p_remain_on_channel_cb(
3455                         wpa_s, data->remain_on_channel.freq,
3456                         data->remain_on_channel.duration);
3457                 break;
3458         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3459 #ifdef CONFIG_OFFCHANNEL
3460                 offchannel_cancel_remain_on_channel_cb(
3461                         wpa_s, data->remain_on_channel.freq);
3462 #endif /* CONFIG_OFFCHANNEL */
3463                 wpas_p2p_cancel_remain_on_channel_cb(
3464                         wpa_s, data->remain_on_channel.freq);
3465                 break;
3466         case EVENT_EAPOL_RX:
3467                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3468                                         data->eapol_rx.data,
3469                                         data->eapol_rx.data_len);
3470                 break;
3471         case EVENT_SIGNAL_CHANGE:
3472                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3473                         "above=%d signal=%d noise=%d txrate=%d",
3474                         data->signal_change.above_threshold,
3475                         data->signal_change.current_signal,
3476                         data->signal_change.current_noise,
3477                         data->signal_change.current_txrate);
3478                 wpa_bss_update_level(wpa_s->current_bss,
3479                                      data->signal_change.current_signal);
3480                 bgscan_notify_signal_change(
3481                         wpa_s, data->signal_change.above_threshold,
3482                         data->signal_change.current_signal,
3483                         data->signal_change.current_noise,
3484                         data->signal_change.current_txrate);
3485                 break;
3486         case EVENT_INTERFACE_ENABLED:
3487                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3488                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3489                         wpa_supplicant_update_mac_addr(wpa_s);
3490                         if (wpa_s->p2p_mgmt) {
3491                                 wpa_supplicant_set_state(wpa_s,
3492                                                          WPA_DISCONNECTED);
3493                                 break;
3494                         }
3495
3496 #ifdef CONFIG_AP
3497                         if (!wpa_s->ap_iface) {
3498                                 wpa_supplicant_set_state(wpa_s,
3499                                                          WPA_DISCONNECTED);
3500                                 wpa_s->scan_req = NORMAL_SCAN_REQ;
3501                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3502                         } else
3503                                 wpa_supplicant_set_state(wpa_s,
3504                                                          WPA_COMPLETED);
3505 #else /* CONFIG_AP */
3506                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3507                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3508 #endif /* CONFIG_AP */
3509                 }
3510                 break;
3511         case EVENT_INTERFACE_DISABLED:
3512                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3513 #ifdef CONFIG_P2P
3514                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3515                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3516                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3517                         /*
3518                          * Mark interface disabled if this happens to end up not
3519                          * being removed as a separate P2P group interface.
3520                          */
3521                         wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3522                         /*
3523                          * The interface was externally disabled. Remove
3524                          * it assuming an external entity will start a
3525                          * new session if needed.
3526                          */
3527                         if (wpa_s->current_ssid &&
3528                             wpa_s->current_ssid->p2p_group)
3529                                 wpas_p2p_interface_unavailable(wpa_s);
3530                         else
3531                                 wpas_p2p_disconnect(wpa_s);
3532                         /*
3533                          * wpa_s instance may have been freed, so must not use
3534                          * it here anymore.
3535                          */
3536                         break;
3537                 }
3538                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3539                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3540                         /* This radio work will be cancelled, so clear P2P
3541                          * state as well.
3542                          */
3543                         p2p_stop_find(wpa_s->global->p2p);
3544                 }
3545 #endif /* CONFIG_P2P */
3546
3547                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3548                         /*
3549                          * Indicate disconnection to keep ctrl_iface events
3550                          * consistent.
3551                          */
3552                         wpa_supplicant_event_disassoc(
3553                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3554                 }
3555                 wpa_supplicant_mark_disassoc(wpa_s);
3556                 radio_remove_works(wpa_s, NULL, 0);
3557
3558                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3559                 break;
3560         case EVENT_CHANNEL_LIST_CHANGED:
3561                 wpa_supplicant_update_channel_list(
3562                         wpa_s, &data->channel_list_changed);
3563                 break;
3564         case EVENT_INTERFACE_UNAVAILABLE:
3565                 wpas_p2p_interface_unavailable(wpa_s);
3566                 break;
3567         case EVENT_BEST_CHANNEL:
3568                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3569                         "(%d %d %d)",
3570                         data->best_chan.freq_24, data->best_chan.freq_5,
3571                         data->best_chan.freq_overall);
3572                 wpa_s->best_24_freq = data->best_chan.freq_24;
3573                 wpa_s->best_5_freq = data->best_chan.freq_5;
3574                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3575                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3576                                               data->best_chan.freq_5,
3577                                               data->best_chan.freq_overall);
3578                 break;
3579         case EVENT_UNPROT_DEAUTH:
3580                 wpa_supplicant_event_unprot_deauth(wpa_s,
3581                                                    &data->unprot_deauth);
3582                 break;
3583         case EVENT_UNPROT_DISASSOC:
3584                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3585                                                      &data->unprot_disassoc);
3586                 break;
3587         case EVENT_STATION_LOW_ACK:
3588 #ifdef CONFIG_AP
3589                 if (wpa_s->ap_iface && data)
3590                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3591                                                   data->low_ack.addr);
3592 #endif /* CONFIG_AP */
3593 #ifdef CONFIG_TDLS
3594                 if (data)
3595                         wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3596                                                           data->low_ack.addr);
3597 #endif /* CONFIG_TDLS */
3598                 break;
3599         case EVENT_IBSS_PEER_LOST:
3600 #ifdef CONFIG_IBSS_RSN
3601                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3602 #endif /* CONFIG_IBSS_RSN */
3603                 break;
3604         case EVENT_DRIVER_GTK_REKEY:
3605                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3606                               wpa_s->bssid, ETH_ALEN))
3607                         break;
3608                 if (!wpa_s->wpa)
3609                         break;
3610                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3611                                          data->driver_gtk_rekey.replay_ctr);
3612                 break;
3613         case EVENT_SCHED_SCAN_STOPPED:
3614                 wpa_s->pno = 0;
3615                 wpa_s->sched_scanning = 0;
3616                 wpa_supplicant_notify_scanning(wpa_s, 0);
3617
3618                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3619                         break;
3620
3621                 /*
3622                  * Start a new sched scan to continue searching for more SSIDs
3623                  * either if timed out or PNO schedule scan is pending.
3624                  */
3625                 if (wpa_s->sched_scan_timed_out) {
3626                         wpa_supplicant_req_sched_scan(wpa_s);
3627                 } else if (wpa_s->pno_sched_pending) {
3628                         wpa_s->pno_sched_pending = 0;
3629                         wpas_start_pno(wpa_s);
3630                 }
3631
3632                 break;
3633         case EVENT_WPS_BUTTON_PUSHED:
3634 #ifdef CONFIG_WPS
3635                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3636 #endif /* CONFIG_WPS */
3637                 break;
3638         case EVENT_AVOID_FREQUENCIES:
3639                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3640                 break;
3641         case EVENT_CONNECT_FAILED_REASON:
3642 #ifdef CONFIG_AP
3643                 if (!wpa_s->ap_iface || !data)
3644                         break;
3645                 hostapd_event_connect_failed_reason(
3646                         wpa_s->ap_iface->bss[0],
3647                         data->connect_failed_reason.addr,
3648                         data->connect_failed_reason.code);
3649 #endif /* CONFIG_AP */
3650                 break;
3651         case EVENT_NEW_PEER_CANDIDATE:
3652 #ifdef CONFIG_MESH
3653                 if (!wpa_s->ifmsh || !data)
3654                         break;
3655                 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
3656                                      data->mesh_peer.ies,
3657                                      data->mesh_peer.ie_len);
3658 #endif /* CONFIG_MESH */
3659                 break;
3660         default:
3661                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3662                 break;
3663         }
3664 }