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