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 /**
  75  * wpas_reenabled_network_time - Time until first network is re-enabled
  76  * @wpa_s: Pointer to wpa_supplicant data
  77  * Returns: If all enabled networks are temporarily disabled, returns the time
  78  *      (in sec) until the first network is re-enabled. Otherwise returns 0.
  79  *
  80  * This function is used in case all enabled networks are temporarily disabled,
  81  * in which case it returns the time (in sec) that the first network will be
  82  * re-enabled. The function assumes that at least one network is enabled.
  83  */
  84 static int wpas_reenabled_network_time(struct wpa_supplicant *wpa_s)
  85 {
  86         struct wpa_ssid *ssid;
  87         int disabled_for, res = 0;
  88
  89 #ifdef CONFIG_INTERWORKING
  90         if (wpa_s->conf->auto_interworking && wpa_s->conf->interworking &&
  91             wpa_s->conf->cred)
  92                 return 0;
  93 #endif /* CONFIG_INTERWORKING */
  94
  95         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
  96                 if (ssid->disabled)
  97                         continue;
  98
  99                 disabled_for = wpas_temp_disabled(wpa_s, ssid);
 100                 if (!disabled_for)
 101                         return 0;
 102
 103                 if (!res || disabled_for < res)
 104                         res = disabled_for;
 105         }
 106
 107         return res;
 108 }
 109
 110
 111 void wpas_network_reenabled(void *eloop_ctx, void *timeout_ctx)
 112 {
 113         struct wpa_supplicant *wpa_s = eloop_ctx;
 114
 115         if (wpa_s->disconnected || wpa_s->wpa_state != WPA_SCANNING)
 116                 return;
 117
 118         wpa_dbg(wpa_s, MSG_DEBUG,
 119                 "Try to associate due to network getting re-enabled");
 120         if (wpa_supplicant_fast_associate(wpa_s) != 1) {
 121                 wpa_supplicant_cancel_sched_scan(wpa_s);
 122                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 123         }
 124 }
 125
 126
 127 static struct wpa_bss * wpa_supplicant_get_new_bss(
 128         struct wpa_supplicant *wpa_s, const u8 *bssid)
 129 {
 130         struct wpa_bss *bss = NULL;
 131         struct wpa_ssid *ssid = wpa_s->current_ssid;
 132
 133         if (ssid->ssid_len > 0)
 134                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
 135         if (!bss)
 136                 bss = wpa_bss_get_bssid(wpa_s, bssid);
 137
 138         return bss;
 139 }
 140
 141
 142 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
 143 {
 144         struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 145
 146         if (!bss) {
 147                 wpa_supplicant_update_scan_results(wpa_s);
 148
 149                 /* Get the BSS from the new scan results */
 150                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 151         }
 152
 153         if (bss)
 154                 wpa_s->current_bss = bss;
 155 }
 156
 157
 158 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
 159 {
 160         struct wpa_ssid *ssid, *old_ssid;
 161         u8 drv_ssid[SSID_MAX_LEN];
 162         size_t drv_ssid_len;
 163         int res;
 164
 165         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
 166                 wpa_supplicant_update_current_bss(wpa_s);
 167
 168                 if (wpa_s->current_ssid->ssid_len == 0)
 169                         return 0; /* current profile still in use */
 170                 res = wpa_drv_get_ssid(wpa_s, drv_ssid);
 171                 if (res < 0) {
 172                         wpa_msg(wpa_s, MSG_INFO,
 173                                 "Failed to read SSID from driver");
 174                         return 0; /* try to use current profile */
 175                 }
 176                 drv_ssid_len = res;
 177
 178                 if (drv_ssid_len == wpa_s->current_ssid->ssid_len &&
 179                     os_memcmp(drv_ssid, wpa_s->current_ssid->ssid,
 180                               drv_ssid_len) == 0)
 181                         return 0; /* current profile still in use */
 182
 183                 wpa_msg(wpa_s, MSG_DEBUG,
 184                         "Driver-initiated BSS selection changed the SSID to %s",
 185                         wpa_ssid_txt(drv_ssid, drv_ssid_len));
 186                 /* continue selecting a new network profile */
 187         }
 188
 189         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
 190                 "information");
 191         ssid = wpa_supplicant_get_ssid(wpa_s);
 192         if (ssid == NULL) {
 193                 wpa_msg(wpa_s, MSG_INFO,
 194                         "No network configuration found for the current AP");
 195                 return -1;
 196         }
 197
 198         if (wpas_network_disabled(wpa_s, ssid)) {
 199                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 200                 return -1;
 201         }
 202
 203         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 204             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 205                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 206                 return -1;
 207         }
 208
 209         res = wpas_temp_disabled(wpa_s, ssid);
 210         if (res > 0) {
 211                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 212                         "disabled for %d second(s)", res);
 213                 return -1;
 214         }
 215
 216         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 217                 "current AP");
 218         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 219                 u8 wpa_ie[80];
 220                 size_t wpa_ie_len = sizeof(wpa_ie);
 221                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 222                                               wpa_ie, &wpa_ie_len) < 0)
 223                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 224         } else {
 225                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 226         }
 227
 228         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 229                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 230         old_ssid = wpa_s->current_ssid;
 231         wpa_s->current_ssid = ssid;
 232
 233         wpa_supplicant_update_current_bss(wpa_s);
 234
 235         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 236         wpa_supplicant_initiate_eapol(wpa_s);
 237         if (old_ssid != wpa_s->current_ssid)
 238                 wpas_notify_network_changed(wpa_s);
 239
 240         return 0;
 241 }
 242
 243
 244 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 245 {
 246         struct wpa_supplicant *wpa_s = eloop_ctx;
 247
 248         if (wpa_s->countermeasures) {
 249                 wpa_s->countermeasures = 0;
 250                 wpa_drv_set_countermeasures(wpa_s, 0);
 251                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 252
 253                 /*
 254                  * It is possible that the device is sched scanning, which means
 255                  * that a connection attempt will be done only when we receive
 256                  * scan results. However, in this case, it would be preferable
 257                  * to scan and connect immediately, so cancel the sched_scan and
 258                  * issue a regular scan flow.
 259                  */
 260                 wpa_supplicant_cancel_sched_scan(wpa_s);
 261                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 262         }
 263 }
 264
 265
 266 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 267 {
 268         int bssid_changed;
 269
 270         wnm_bss_keep_alive_deinit(wpa_s);
 271
 272 #ifdef CONFIG_IBSS_RSN
 273         ibss_rsn_deinit(wpa_s->ibss_rsn);
 274         wpa_s->ibss_rsn = NULL;
 275 #endif /* CONFIG_IBSS_RSN */
 276
 277 #ifdef CONFIG_AP
 278         wpa_supplicant_ap_deinit(wpa_s);
 279 #endif /* CONFIG_AP */
 280
 281         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 282                 return;
 283
 284         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 285         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 286         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 287         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 288         sme_clear_on_disassoc(wpa_s);
 289 #ifdef CONFIG_P2P
 290         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 291 #endif /* CONFIG_P2P */
 292         wpa_s->current_bss = NULL;
 293         wpa_s->assoc_freq = 0;
 294
 295         if (bssid_changed)
 296                 wpas_notify_bssid_changed(wpa_s);
 297
 298         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 299         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 300         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 301                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 302         wpa_s->ap_ies_from_associnfo = 0;
 303         wpa_s->current_ssid = NULL;
 304         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 305         wpa_s->key_mgmt = 0;
 306
 307         wpas_rrm_reset(wpa_s);
 308 }
 309
 310
 311 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 312 {
 313         struct wpa_ie_data ie;
 314         int pmksa_set = -1;
 315         size_t i;
 316
 317         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 318             ie.pmkid == NULL)
 319                 return;
 320
 321         for (i = 0; i < ie.num_pmkid; i++) {
 322                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 323                                                     ie.pmkid + i * PMKID_LEN,
 324                                                     NULL, NULL, 0);
 325                 if (pmksa_set == 0) {
 326                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
 327                         break;
 328                 }
 329         }
 330
 331         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 332                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 333 }
 334
 335
 336 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 337                                                  union wpa_event_data *data)
 338 {
 339         if (data == NULL) {
 340                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 341                         "event");
 342                 return;
 343         }
 344         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 345                 " index=%d preauth=%d",
 346                 MAC2STR(data->pmkid_candidate.bssid),
 347                 data->pmkid_candidate.index,
 348                 data->pmkid_candidate.preauth);
 349
 350         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 351                             data->pmkid_candidate.index,
 352                             data->pmkid_candidate.preauth);
 353 }
 354
 355
 356 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 357 {
 358         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 359             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 360                 return 0;
 361
 362 #ifdef IEEE8021X_EAPOL
 363         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 364             wpa_s->current_ssid &&
 365             !(wpa_s->current_ssid->eapol_flags &
 366               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 367                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 368                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 369                  * plaintext or static WEP keys). */
 370                 return 0;
 371         }
 372 #endif /* IEEE8021X_EAPOL */
 373
 374         return 1;
 375 }
 376
 377
 378 /**
 379  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 380  * @wpa_s: pointer to wpa_supplicant data
 381  * @ssid: Configuration data for the network
 382  * Returns: 0 on success, -1 on failure
 383  *
 384  * This function is called when starting authentication with a network that is
 385  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 386  */
 387 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 388                               struct wpa_ssid *ssid)
 389 {
 390 #ifdef IEEE8021X_EAPOL
 391 #ifdef PCSC_FUNCS
 392         int aka = 0, sim = 0;
 393
 394         if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
 395             wpa_s->scard != NULL || wpa_s->conf->external_sim)
 396                 return 0;
 397
 398         if (ssid == NULL || ssid->eap.eap_methods == NULL) {
 399                 sim = 1;
 400                 aka = 1;
 401         } else {
 402                 struct eap_method_type *eap = ssid->eap.eap_methods;
 403                 while (eap->vendor != EAP_VENDOR_IETF ||
 404                        eap->method != EAP_TYPE_NONE) {
 405                         if (eap->vendor == EAP_VENDOR_IETF) {
 406                                 if (eap->method == EAP_TYPE_SIM)
 407                                         sim = 1;
 408                                 else if (eap->method == EAP_TYPE_AKA ||
 409                                          eap->method == EAP_TYPE_AKA_PRIME)
 410                                         aka = 1;
 411                         }
 412                         eap++;
 413                 }
 414         }
 415
 416         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 417                 sim = 0;
 418         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 419             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 420             NULL)
 421                 aka = 0;
 422
 423         if (!sim && !aka) {
 424                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 425                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 426                         "enabled");
 427                 return 0;
 428         }
 429
 430         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 431                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 432
 433         wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
 434         if (wpa_s->scard == NULL) {
 435                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 436                         "(pcsc-lite)");
 437                 return -1;
 438         }
 439         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 440         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 441 #endif /* PCSC_FUNCS */
 442 #endif /* IEEE8021X_EAPOL */
 443
 444         return 0;
 445 }
 446
 447
 448 #ifndef CONFIG_NO_SCAN_PROCESSING
 449
 450 static int has_wep_key(struct wpa_ssid *ssid)
 451 {
 452         int i;
 453
 454         for (i = 0; i < NUM_WEP_KEYS; i++) {
 455                 if (ssid->wep_key_len[i])
 456                         return 1;
 457         }
 458
 459         return 0;
 460 }
 461
 462
 463 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 464                                         struct wpa_ssid *ssid)
 465 {
 466         int privacy = 0;
 467
 468         if (ssid->mixed_cell)
 469                 return 1;
 470
 471 #ifdef CONFIG_WPS
 472         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 473                 return 1;
 474 #endif /* CONFIG_WPS */
 475
 476         if (has_wep_key(ssid))
 477                 privacy = 1;
 478
 479 #ifdef IEEE8021X_EAPOL
 480         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 481             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 482                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 483                 privacy = 1;
 484 #endif /* IEEE8021X_EAPOL */
 485
 486         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 487                 privacy = 1;
 488
 489         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 490                 privacy = 1;
 491
 492         if (bss->caps & IEEE80211_CAP_PRIVACY)
 493                 return privacy;
 494         return !privacy;
 495 }
 496
 497
 498 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 499                                          struct wpa_ssid *ssid,
 500                                          struct wpa_bss *bss)
 501 {
 502         struct wpa_ie_data ie;
 503         int proto_match = 0;
 504         const u8 *rsn_ie, *wpa_ie;
 505         int ret;
 506         int wep_ok;
 507
 508         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 509         if (ret >= 0)
 510                 return ret;
 511
 512         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 513         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 514                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 515                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 516                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 517
 518         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 519         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 520                 proto_match++;
 521
 522                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 523                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 524                                 "failed");
 525                         break;
 526                 }
 527
 528                 if (wep_ok &&
 529                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 530                 {
 531                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 532                                 "in RSN IE");
 533                         return 1;
 534                 }
 535
 536                 if (!(ie.proto & ssid->proto)) {
 537                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 538                                 "mismatch");
 539                         break;
 540                 }
 541
 542                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 543                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 544                                 "cipher mismatch");
 545                         break;
 546                 }
 547
 548                 if (!(ie.group_cipher & ssid->group_cipher)) {
 549                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 550                                 "cipher mismatch");
 551                         break;
 552                 }
 553
 554                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 555                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 556                                 "mismatch");
 557                         break;
 558                 }
 559
 560 #ifdef CONFIG_IEEE80211W
 561                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 562                     wpas_get_ssid_pmf(wpa_s, ssid) ==
 563                     MGMT_FRAME_PROTECTION_REQUIRED) {
 564                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 565                                 "frame protection");
 566                         break;
 567                 }
 568 #endif /* CONFIG_IEEE80211W */
 569
 570                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 571                 return 1;
 572         }
 573
 574         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 575         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 576                 proto_match++;
 577
 578                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 579                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 580                                 "failed");
 581                         break;
 582                 }
 583
 584                 if (wep_ok &&
 585                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 586                 {
 587                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 588                                 "in WPA IE");
 589                         return 1;
 590                 }
 591
 592                 if (!(ie.proto & ssid->proto)) {
 593                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 594                                 "mismatch");
 595                         break;
 596                 }
 597
 598                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 599                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 600                                 "cipher mismatch");
 601                         break;
 602                 }
 603
 604                 if (!(ie.group_cipher & ssid->group_cipher)) {
 605                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 606                                 "cipher mismatch");
 607                         break;
 608                 }
 609
 610                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 611                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 612                                 "mismatch");
 613                         break;
 614                 }
 615
 616                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 617                 return 1;
 618         }
 619
 620         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 621             !rsn_ie) {
 622                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 623                 return 1;
 624         }
 625
 626         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 627             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 628                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 629                 return 0;
 630         }
 631
 632         if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
 633             wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
 634                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
 635                 return 1;
 636         }
 637
 638         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 639                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 640                 return 1;
 641         }
 642
 643         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 644                 "WPA/WPA2");
 645
 646         return 0;
 647 }
 648
 649
 650 static int freq_allowed(int *freqs, int freq)
 651 {
 652         int i;
 653
 654         if (freqs == NULL)
 655                 return 1;
 656
 657         for (i = 0; freqs[i]; i++)
 658                 if (freqs[i] == freq)
 659                         return 1;
 660         return 0;
 661 }
 662
 663
 664 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 665 {
 666         const struct hostapd_hw_modes *mode = NULL, *modes;
 667         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 668         const u8 *rate_ie;
 669         int i, j, k;
 670
 671         if (bss->freq == 0)
 672                 return 1; /* Cannot do matching without knowing band */
 673
 674         modes = wpa_s->hw.modes;
 675         if (modes == NULL) {
 676                 /*
 677                  * The driver does not provide any additional information
 678                  * about the utilized hardware, so allow the connection attempt
 679                  * to continue.
 680                  */
 681                 return 1;
 682         }
 683
 684         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 685                 for (j = 0; j < modes[i].num_channels; j++) {
 686                         int freq = modes[i].channels[j].freq;
 687                         if (freq == bss->freq) {
 688                                 if (mode &&
 689                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 690                                         break; /* do not allow 802.11b replace
 691                                                 * 802.11g */
 692                                 mode = &modes[i];
 693                                 break;
 694                         }
 695                 }
 696         }
 697
 698         if (mode == NULL)
 699                 return 0;
 700
 701         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 702                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 703                 if (rate_ie == NULL)
 704                         continue;
 705
 706                 for (j = 2; j < rate_ie[1] + 2; j++) {
 707                         int flagged = !!(rate_ie[j] & 0x80);
 708                         int r = (rate_ie[j] & 0x7f) * 5;
 709
 710                         /*
 711                          * IEEE Std 802.11n-2009 7.3.2.2:
 712                          * The new BSS Membership selector value is encoded
 713                          * like a legacy basic rate, but it is not a rate and
 714                          * only indicates if the BSS members are required to
 715                          * support the mandatory features of Clause 20 [HT PHY]
 716                          * in order to join the BSS.
 717                          */
 718                         if (flagged && ((rate_ie[j] & 0x7f) ==
 719                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 720                                 if (!ht_supported(mode)) {
 721                                         wpa_dbg(wpa_s, MSG_DEBUG,
 722                                                 "   hardware does not support "
 723                                                 "HT PHY");
 724                                         return 0;
 725                                 }
 726                                 continue;
 727                         }
 728
 729                         /* There's also a VHT selector for 802.11ac */
 730                         if (flagged && ((rate_ie[j] & 0x7f) ==
 731                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 732                                 if (!vht_supported(mode)) {
 733                                         wpa_dbg(wpa_s, MSG_DEBUG,
 734                                                 "   hardware does not support "
 735                                                 "VHT PHY");
 736                                         return 0;
 737                                 }
 738                                 continue;
 739                         }
 740
 741                         if (!flagged)
 742                                 continue;
 743
 744                         /* check for legacy basic rates */
 745                         for (k = 0; k < mode->num_rates; k++) {
 746                                 if (mode->rates[k] == r)
 747                                         break;
 748                         }
 749                         if (k == mode->num_rates) {
 750                                 /*
 751                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 752                                  * order to join a BSS all required rates
 753                                  * have to be supported by the hardware.
 754                                  */
 755                                 wpa_dbg(wpa_s, MSG_DEBUG,
 756                                         "   hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)",
 757                                         r / 10, r % 10,
 758                                         bss->freq, mode->mode, mode->num_rates);
 759                                 return 0;
 760                         }
 761                 }
 762         }
 763
 764         return 1;
 765 }
 766
 767
 768 /*
 769  * Test whether BSS is in an ESS.
 770  * This is done differently in DMG (60 GHz) and non-DMG bands
 771  */
 772 static int bss_is_ess(struct wpa_bss *bss)
 773 {
 774         if (bss_is_dmg(bss)) {
 775                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 776                         IEEE80211_CAP_DMG_AP;
 777         }
 778
 779         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 780                 IEEE80211_CAP_ESS);
 781 }
 782
 783
 784 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
 785 {
 786         size_t i;
 787
 788         for (i = 0; i < ETH_ALEN; i++) {
 789                 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
 790                         return 0;
 791         }
 792         return 1;
 793 }
 794
 795
 796 static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
 797 {
 798         size_t i;
 799
 800         for (i = 0; i < num; i++) {
 801                 const u8 *a = list + i * ETH_ALEN * 2;
 802                 const u8 *m = a + ETH_ALEN;
 803
 804                 if (match_mac_mask(a, addr, m))
 805                         return 1;
 806         }
 807         return 0;
 808 }
 809
 810
 811 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 812                                             int i, struct wpa_bss *bss,
 813                                             struct wpa_ssid *group,
 814                                             int only_first_ssid)
 815 {
 816         u8 wpa_ie_len, rsn_ie_len;
 817         int wpa;
 818         struct wpa_blacklist *e;
 819         const u8 *ie;
 820         struct wpa_ssid *ssid;
 821         int osen;
 822
 823         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 824         wpa_ie_len = ie ? ie[1] : 0;
 825
 826         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 827         rsn_ie_len = ie ? ie[1] : 0;
 828
 829         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 830         osen = ie != NULL;
 831
 832         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 833                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
 834                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 835                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 836                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 837                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 838                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 839                 " p2p" : "",
 840                 osen ? " osen=1" : "");
 841
 842         e = wpa_blacklist_get(wpa_s, bss->bssid);
 843         if (e) {
 844                 int limit = 1;
 845                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 846                         /*
 847                          * When only a single network is enabled, we can
 848                          * trigger blacklisting on the first failure. This
 849                          * should not be done with multiple enabled networks to
 850                          * avoid getting forced to move into a worse ESS on
 851                          * single error if there are no other BSSes of the
 852                          * current ESS.
 853                          */
 854                         limit = 0;
 855                 }
 856                 if (e->count > limit) {
 857                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 858                                 "(count=%d limit=%d)", e->count, limit);
 859                         return NULL;
 860                 }
 861         }
 862
 863         if (bss->ssid_len == 0) {
 864                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 865                 return NULL;
 866         }
 867
 868         if (disallowed_bssid(wpa_s, bss->bssid)) {
 869                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 870                 return NULL;
 871         }
 872
 873         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 874                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 875                 return NULL;
 876         }
 877
 878         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 879
 880         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 881                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 882                 int res;
 883
 884                 if (wpas_network_disabled(wpa_s, ssid)) {
 885                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 886                         continue;
 887                 }
 888
 889                 res = wpas_temp_disabled(wpa_s, ssid);
 890                 if (res > 0) {
 891                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 892                                 "temporarily for %d second(s)", res);
 893                         continue;
 894                 }
 895
 896 #ifdef CONFIG_WPS
 897                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 898                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 899                                 "(WPS)");
 900                         continue;
 901                 }
 902
 903                 if (wpa && ssid->ssid_len == 0 &&
 904                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 905                         check_ssid = 0;
 906
 907                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 908                         /* Only allow wildcard SSID match if an AP
 909                          * advertises active WPS operation that matches
 910                          * with our mode. */
 911                         check_ssid = 1;
 912                         if (ssid->ssid_len == 0 &&
 913                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 914                                 check_ssid = 0;
 915                 }
 916 #endif /* CONFIG_WPS */
 917
 918                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 919                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 920                         check_ssid = 0;
 921
 922                 if (check_ssid &&
 923                     (bss->ssid_len != ssid->ssid_len ||
 924                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 925                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 926                         continue;
 927                 }
 928
 929                 if (ssid->bssid_set &&
 930                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 931                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 932                         continue;
 933                 }
 934
 935                 /* check blacklist */
 936                 if (ssid->num_bssid_blacklist &&
 937                     addr_in_list(bss->bssid, ssid->bssid_blacklist,
 938                                  ssid->num_bssid_blacklist)) {
 939                         wpa_dbg(wpa_s, MSG_DEBUG,
 940                                 "   skip - BSSID blacklisted");
 941                         continue;
 942                 }
 943
 944                 /* if there is a whitelist, only accept those APs */
 945                 if (ssid->num_bssid_whitelist &&
 946                     !addr_in_list(bss->bssid, ssid->bssid_whitelist,
 947                                   ssid->num_bssid_whitelist)) {
 948                         wpa_dbg(wpa_s, MSG_DEBUG,
 949                                 "   skip - BSSID not in whitelist");
 950                         continue;
 951                 }
 952
 953                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 954                         continue;
 955
 956                 if (!osen && !wpa &&
 957                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 958                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 959                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 960                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 961                                 "not allowed");
 962                         continue;
 963                 }
 964
 965                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 966                     has_wep_key(ssid)) {
 967                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 968                         continue;
 969                 }
 970
 971                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
 972                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
 973                                 "not allowed");
 974                         continue;
 975                 }
 976
 977                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 978                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 979                                 "mismatch");
 980                         continue;
 981                 }
 982
 983                 if (!bss_is_ess(bss)) {
 984                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 985                         continue;
 986                 }
 987
 988                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 989                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 990                                 "allowed");
 991                         continue;
 992                 }
 993
 994                 if (!rate_match(wpa_s, bss)) {
 995                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 996                                 "not match");
 997                         continue;
 998                 }
 999
1000 #ifdef CONFIG_P2P
1001                 if (ssid->p2p_group &&
1002                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
1003                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
1004                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
1005                         continue;
1006                 }
1007
1008                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
1009                         struct wpabuf *p2p_ie;
1010                         u8 dev_addr[ETH_ALEN];
1011
1012                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
1013                         if (ie == NULL) {
1014                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
1015                                 continue;
1016                         }
1017                         p2p_ie = wpa_bss_get_vendor_ie_multi(
1018                                 bss, P2P_IE_VENDOR_TYPE);
1019                         if (p2p_ie == NULL) {
1020                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
1021                                 continue;
1022                         }
1023
1024                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
1025                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
1026                                          ETH_ALEN) != 0) {
1027                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
1028                                 wpabuf_free(p2p_ie);
1029                                 continue;
1030                         }
1031                         wpabuf_free(p2p_ie);
1032                 }
1033
1034                 /*
1035                  * TODO: skip the AP if its P2P IE has Group Formation
1036                  * bit set in the P2P Group Capability Bitmap and we
1037                  * are not in Group Formation with that device.
1038                  */
1039 #endif /* CONFIG_P2P */
1040
1041                 /* Matching configuration found */
1042                 return ssid;
1043         }
1044
1045         /* No matching configuration found */
1046         return NULL;
1047 }
1048
1049
1050 static struct wpa_bss *
1051 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
1052                           struct wpa_ssid *group,
1053                           struct wpa_ssid **selected_ssid,
1054                           int only_first_ssid)
1055 {
1056         unsigned int i;
1057
1058         if (only_first_ssid)
1059                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
1060                         group->id);
1061         else
1062                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
1063                         group->priority);
1064
1065         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
1066                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
1067                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
1068                                                     only_first_ssid);
1069                 if (!*selected_ssid)
1070                         continue;
1071                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
1072                         " ssid='%s'",
1073                         MAC2STR(bss->bssid),
1074                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
1075                 return bss;
1076         }
1077
1078         return NULL;
1079 }
1080
1081
1082 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1083                                              struct wpa_ssid **selected_ssid)
1084 {
1085         struct wpa_bss *selected = NULL;
1086         int prio;
1087         struct wpa_ssid *next_ssid = NULL;
1088         struct wpa_ssid *ssid;
1089
1090         if (wpa_s->last_scan_res == NULL ||
1091             wpa_s->last_scan_res_used == 0)
1092                 return NULL; /* no scan results from last update */
1093
1094         if (wpa_s->next_ssid) {
1095                 /* check that next_ssid is still valid */
1096                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1097                         if (ssid == wpa_s->next_ssid)
1098                                 break;
1099                 }
1100                 next_ssid = ssid;
1101                 wpa_s->next_ssid = NULL;
1102         }
1103
1104         while (selected == NULL) {
1105                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1106                         if (next_ssid && next_ssid->priority ==
1107                             wpa_s->conf->pssid[prio]->priority) {
1108                                 selected = wpa_supplicant_select_bss(
1109                                         wpa_s, next_ssid, selected_ssid, 1);
1110                                 if (selected)
1111                                         break;
1112                         }
1113                         selected = wpa_supplicant_select_bss(
1114                                 wpa_s, wpa_s->conf->pssid[prio],
1115                                 selected_ssid, 0);
1116                         if (selected)
1117                                 break;
1118                 }
1119
1120                 if (selected == NULL && wpa_s->blacklist &&
1121                     !wpa_s->countermeasures) {
1122                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1123                                 "blacklist and try again");
1124                         wpa_blacklist_clear(wpa_s);
1125                         wpa_s->blacklist_cleared++;
1126                 } else if (selected == NULL)
1127                         break;
1128         }
1129
1130         ssid = *selected_ssid;
1131         if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set &&
1132             !ssid->passphrase && !ssid->ext_psk) {
1133                 const char *field_name, *txt = NULL;
1134
1135                 wpa_dbg(wpa_s, MSG_DEBUG,
1136                         "PSK/passphrase not yet available for the selected network");
1137
1138                 wpas_notify_network_request(wpa_s, ssid,
1139                                             WPA_CTRL_REQ_PSK_PASSPHRASE, NULL);
1140
1141                 field_name = wpa_supplicant_ctrl_req_to_string(
1142                         WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt);
1143                 if (field_name == NULL)
1144                         return NULL;
1145
1146                 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
1147
1148                 selected = NULL;
1149         }
1150
1151         return selected;
1152 }
1153
1154
1155 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1156                                         int timeout_sec, int timeout_usec)
1157 {
1158         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1159                 /*
1160                  * No networks are enabled; short-circuit request so
1161                  * we don't wait timeout seconds before transitioning
1162                  * to INACTIVE state.
1163                  */
1164                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1165                         "since there are no enabled networks");
1166                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1167                 return;
1168         }
1169
1170         wpa_s->scan_for_connection = 1;
1171         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1172 }
1173
1174
1175 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1176                            struct wpa_bss *selected,
1177                            struct wpa_ssid *ssid)
1178 {
1179         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1180                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1181                         "PBC session overlap");
1182                 wpas_notify_wps_event_pbc_overlap(wpa_s);
1183 #ifdef CONFIG_P2P
1184                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1185                     wpa_s->p2p_in_provisioning) {
1186                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1187                                                wpa_s, NULL);
1188                         return -1;
1189                 }
1190 #endif /* CONFIG_P2P */
1191
1192 #ifdef CONFIG_WPS
1193                 wpas_wps_cancel(wpa_s);
1194 #endif /* CONFIG_WPS */
1195                 return -1;
1196         }
1197
1198         wpa_msg(wpa_s, MSG_DEBUG,
1199                 "Considering connect request: reassociate: %d  selected: "
1200                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1201                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1202                 wpa_s->reassociate, MAC2STR(selected->bssid),
1203                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1204                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1205                 ssid, wpa_s->current_ssid);
1206
1207         /*
1208          * Do not trigger new association unless the BSSID has changed or if
1209          * reassociation is requested. If we are in process of associating with
1210          * the selected BSSID, do not trigger new attempt.
1211          */
1212         if (wpa_s->reassociate ||
1213             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1214              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1215                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1216               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1217                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1218                0) ||
1219               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1220                ssid != wpa_s->current_ssid)))) {
1221                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1222                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1223                         return 0;
1224                 }
1225                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1226                         MAC2STR(selected->bssid));
1227                 wpa_supplicant_associate(wpa_s, selected, ssid);
1228         } else {
1229                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1230                         "connect with the selected AP");
1231         }
1232
1233         return 0;
1234 }
1235
1236
1237 static struct wpa_ssid *
1238 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1239 {
1240         int prio;
1241         struct wpa_ssid *ssid;
1242
1243         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1244                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1245                 {
1246                         if (wpas_network_disabled(wpa_s, ssid))
1247                                 continue;
1248                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1249                             ssid->mode == IEEE80211_MODE_AP ||
1250                             ssid->mode == IEEE80211_MODE_MESH)
1251                                 return ssid;
1252                 }
1253         }
1254         return NULL;
1255 }
1256
1257
1258 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1259  * on BSS added and BSS changed events */
1260 static void wpa_supplicant_rsn_preauth_scan_results(
1261         struct wpa_supplicant *wpa_s)
1262 {
1263         struct wpa_bss *bss;
1264
1265         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1266                 return;
1267
1268         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1269                 const u8 *ssid, *rsn;
1270
1271                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1272                 if (ssid == NULL)
1273                         continue;
1274
1275                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1276                 if (rsn == NULL)
1277                         continue;
1278
1279                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1280         }
1281
1282 }
1283
1284
1285 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1286                                        struct wpa_bss *selected,
1287                                        struct wpa_ssid *ssid)
1288 {
1289         struct wpa_bss *current_bss = NULL;
1290 #ifndef CONFIG_NO_ROAMING
1291         int min_diff;
1292 #endif /* CONFIG_NO_ROAMING */
1293
1294         if (wpa_s->reassociate)
1295                 return 1; /* explicit request to reassociate */
1296         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1297                 return 1; /* we are not associated; continue */
1298         if (wpa_s->current_ssid == NULL)
1299                 return 1; /* unknown current SSID */
1300         if (wpa_s->current_ssid != ssid)
1301                 return 1; /* different network block */
1302
1303         if (wpas_driver_bss_selection(wpa_s))
1304                 return 0; /* Driver-based roaming */
1305
1306         if (wpa_s->current_ssid->ssid)
1307                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1308                                           wpa_s->current_ssid->ssid,
1309                                           wpa_s->current_ssid->ssid_len);
1310         if (!current_bss)
1311                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1312
1313         if (!current_bss)
1314                 return 1; /* current BSS not seen in scan results */
1315
1316         if (current_bss == selected)
1317                 return 0;
1318
1319         if (selected->last_update_idx > current_bss->last_update_idx)
1320                 return 1; /* current BSS not seen in the last scan */
1321
1322 #ifndef CONFIG_NO_ROAMING
1323         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1324         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
1325                 " level=%d snr=%d est_throughput=%u",
1326                 MAC2STR(current_bss->bssid), current_bss->level,
1327                 current_bss->snr, current_bss->est_throughput);
1328         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
1329                 " level=%d snr=%d est_throughput=%u",
1330                 MAC2STR(selected->bssid), selected->level,
1331                 selected->snr, selected->est_throughput);
1332
1333         if (wpa_s->current_ssid->bssid_set &&
1334             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1335             0) {
1336                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1337                         "has preferred BSSID");
1338                 return 1;
1339         }
1340
1341         if (selected->est_throughput > current_bss->est_throughput + 5000) {
1342                 wpa_dbg(wpa_s, MSG_DEBUG,
1343                         "Allow reassociation - selected BSS has better estimated throughput");
1344                 return 1;
1345         }
1346
1347         if (current_bss->level < 0 && current_bss->level > selected->level) {
1348                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1349                         "signal level");
1350                 return 0;
1351         }
1352
1353         min_diff = 2;
1354         if (current_bss->level < 0) {
1355                 if (current_bss->level < -85)
1356                         min_diff = 1;
1357                 else if (current_bss->level < -80)
1358                         min_diff = 2;
1359                 else if (current_bss->level < -75)
1360                         min_diff = 3;
1361                 else if (current_bss->level < -70)
1362                         min_diff = 4;
1363                 else
1364                         min_diff = 5;
1365         }
1366         if (abs(current_bss->level - selected->level) < min_diff) {
1367                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1368                         "in signal level");
1369                 return 0;
1370         }
1371
1372         return 1;
1373 #else /* CONFIG_NO_ROAMING */
1374         return 0;
1375 #endif /* CONFIG_NO_ROAMING */
1376 }
1377
1378
1379 /* Return != 0 if no scan results could be fetched or if scan results should not
1380  * be shared with other virtual interfaces. */
1381 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1382                                               union wpa_event_data *data,
1383                                               int own_request)
1384 {
1385         struct wpa_scan_results *scan_res = NULL;
1386         int ret = 0;
1387         int ap = 0;
1388 #ifndef CONFIG_NO_RANDOM_POOL
1389         size_t i, num;
1390 #endif /* CONFIG_NO_RANDOM_POOL */
1391
1392 #ifdef CONFIG_AP
1393         if (wpa_s->ap_iface)
1394                 ap = 1;
1395 #endif /* CONFIG_AP */
1396
1397         wpa_supplicant_notify_scanning(wpa_s, 0);
1398
1399         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1400                                                    data ? &data->scan_info :
1401                                                    NULL, 1);
1402         if (scan_res == NULL) {
1403                 if (wpa_s->conf->ap_scan == 2 || ap ||
1404                     wpa_s->scan_res_handler == scan_only_handler)
1405                         return -1;
1406                 if (!own_request)
1407                         return -1;
1408                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1409                         "scanning again");
1410                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1411                 ret = -1;
1412                 goto scan_work_done;
1413         }
1414
1415 #ifndef CONFIG_NO_RANDOM_POOL
1416         num = scan_res->num;
1417         if (num > 10)
1418                 num = 10;
1419         for (i = 0; i < num; i++) {
1420                 u8 buf[5];
1421                 struct wpa_scan_res *res = scan_res->res[i];
1422                 buf[0] = res->bssid[5];
1423                 buf[1] = res->qual & 0xff;
1424                 buf[2] = res->noise & 0xff;
1425                 buf[3] = res->level & 0xff;
1426                 buf[4] = res->tsf & 0xff;
1427                 random_add_randomness(buf, sizeof(buf));
1428         }
1429 #endif /* CONFIG_NO_RANDOM_POOL */
1430
1431         if (own_request && wpa_s->scan_res_handler &&
1432             (wpa_s->own_scan_running || !wpa_s->radio->external_scan_running)) {
1433                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1434                                          struct wpa_scan_results *scan_res);
1435
1436                 scan_res_handler = wpa_s->scan_res_handler;
1437                 wpa_s->scan_res_handler = NULL;
1438                 scan_res_handler(wpa_s, scan_res);
1439                 ret = -2;
1440                 goto scan_work_done;
1441         }
1442
1443         if (ap) {
1444                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1445 #ifdef CONFIG_AP
1446                 if (wpa_s->ap_iface->scan_cb)
1447                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1448 #endif /* CONFIG_AP */
1449                 goto scan_work_done;
1450         }
1451
1452         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1453                 wpa_s->own_scan_running, wpa_s->radio->external_scan_running);
1454         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1455             wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1456                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1457                              wpa_s->manual_scan_id);
1458                 wpa_s->manual_scan_use_id = 0;
1459         } else {
1460                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1461         }
1462         wpas_notify_scan_results(wpa_s);
1463
1464         wpas_notify_scan_done(wpa_s, 1);
1465
1466         if (!wpa_s->own_scan_running && wpa_s->radio->external_scan_running) {
1467                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1468                 wpa_scan_results_free(scan_res);
1469                 return 0;
1470         }
1471
1472         if (wnm_scan_process(wpa_s, 1) > 0)
1473                 goto scan_work_done;
1474
1475         if (sme_proc_obss_scan(wpa_s) > 0)
1476                 goto scan_work_done;
1477
1478         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1479                 goto scan_work_done;
1480
1481         if (autoscan_notify_scan(wpa_s, scan_res))
1482                 goto scan_work_done;
1483
1484         if (wpa_s->disconnected) {
1485                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1486                 goto scan_work_done;
1487         }
1488
1489         if (!wpas_driver_bss_selection(wpa_s) &&
1490             bgscan_notify_scan(wpa_s, scan_res) == 1)
1491                 goto scan_work_done;
1492
1493         wpas_wps_update_ap_info(wpa_s, scan_res);
1494
1495         wpa_scan_results_free(scan_res);
1496
1497         if (wpa_s->scan_work) {
1498                 struct wpa_radio_work *work = wpa_s->scan_work;
1499                 wpa_s->scan_work = NULL;
1500                 radio_work_done(work);
1501         }
1502
1503         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1504
1505 scan_work_done:
1506         wpa_scan_results_free(scan_res);
1507         if (wpa_s->scan_work) {
1508                 struct wpa_radio_work *work = wpa_s->scan_work;
1509                 wpa_s->scan_work = NULL;
1510                 radio_work_done(work);
1511         }
1512         return ret;
1513 }
1514
1515
1516 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1517                                               int new_scan, int own_request)
1518 {
1519         struct wpa_bss *selected;
1520         struct wpa_ssid *ssid = NULL;
1521         int time_to_reenable = wpas_reenabled_network_time(wpa_s);
1522
1523         if (time_to_reenable > 0) {
1524                 wpa_dbg(wpa_s, MSG_DEBUG,
1525                         "Postpone network selection by %d seconds since all networks are disabled",
1526                         time_to_reenable);
1527                 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
1528                 eloop_register_timeout(time_to_reenable, 0,
1529                                        wpas_network_reenabled, wpa_s, NULL);
1530                 return 0;
1531         }
1532
1533         if (wpa_s->p2p_mgmt)
1534                 return 0; /* no normal connection on p2p_mgmt interface */
1535
1536         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1537
1538         if (selected) {
1539                 int skip;
1540                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1541                 if (skip) {
1542                         if (new_scan)
1543                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1544                         return 0;
1545                 }
1546
1547                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1548                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1549                         return -1;
1550                 }
1551                 if (new_scan)
1552                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1553                 /*
1554                  * Do not notify other virtual radios of scan results since we do not
1555                  * want them to start other associations at the same time.
1556                  */
1557                 return 1;
1558         } else {
1559 #ifdef CONFIG_MESH
1560                 if (wpa_s->ifmsh) {
1561                         wpa_msg(wpa_s, MSG_INFO,
1562                                 "Avoiding join because we already joined a mesh group");
1563                         return 0;
1564                 }
1565 #endif /* CONFIG_MESH */
1566                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1567                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1568                 if (ssid) {
1569                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1570                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1571                         if (new_scan)
1572                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1573                 } else if (own_request) {
1574                         /*
1575                          * No SSID found. If SCAN results are as a result of
1576                          * own scan request and not due to a scan request on
1577                          * another shared interface, try another scan.
1578                          */
1579                         int timeout_sec = wpa_s->scan_interval;
1580                         int timeout_usec = 0;
1581 #ifdef CONFIG_P2P
1582                         int res;
1583
1584                         res = wpas_p2p_scan_no_go_seen(wpa_s);
1585                         if (res == 2)
1586                                 return 2;
1587                         if (res == 1)
1588                                 return 0;
1589
1590                         if (wpa_s->p2p_in_provisioning ||
1591                             wpa_s->show_group_started ||
1592                             wpa_s->p2p_in_invitation) {
1593                                 /*
1594                                  * Use shorter wait during P2P Provisioning
1595                                  * state and during P2P join-a-group operation
1596                                  * to speed up group formation.
1597                                  */
1598                                 timeout_sec = 0;
1599                                 timeout_usec = 250000;
1600                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1601                                                             timeout_usec);
1602                                 return 0;
1603                         }
1604 #endif /* CONFIG_P2P */
1605 #ifdef CONFIG_INTERWORKING
1606                         if (wpa_s->conf->auto_interworking &&
1607                             wpa_s->conf->interworking &&
1608                             wpa_s->conf->cred) {
1609                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1610                                         "start ANQP fetch since no matching "
1611                                         "networks found");
1612                                 wpa_s->network_select = 1;
1613                                 wpa_s->auto_network_select = 1;
1614                                 interworking_start_fetch_anqp(wpa_s);
1615                                 return 1;
1616                         }
1617 #endif /* CONFIG_INTERWORKING */
1618 #ifdef CONFIG_WPS
1619                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1620                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1621                                 timeout_sec = 0;
1622                                 timeout_usec = 500000;
1623                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1624                                                             timeout_usec);
1625                                 return 0;
1626                         }
1627 #endif /* CONFIG_WPS */
1628                         if (wpa_supplicant_req_sched_scan(wpa_s))
1629                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1630                                                             timeout_usec);
1631                 }
1632         }
1633         return 0;
1634 }
1635
1636
1637 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1638                                              union wpa_event_data *data)
1639 {
1640         struct wpa_supplicant *ifs;
1641         int res;
1642
1643         res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1644         if (res == 2) {
1645                 /*
1646                  * Interface may have been removed, so must not dereference
1647                  * wpa_s after this.
1648                  */
1649                 return 1;
1650         }
1651         if (res != 0) {
1652                 /*
1653                  * If no scan results could be fetched, then no need to
1654                  * notify those interfaces that did not actually request
1655                  * this scan. Similarly, if scan results started a new operation on this
1656                  * interface, do not notify other interfaces to avoid concurrent
1657                  * operations during a connection attempt.
1658                  */
1659                 return 0;
1660         }
1661
1662         /*
1663          * Check other interfaces to see if they share the same radio. If
1664          * so, they get updated with this same scan info.
1665          */
1666         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1667                          radio_list) {
1668                 if (ifs != wpa_s) {
1669                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1670                                    "sibling", ifs->ifname);
1671                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1672                 }
1673         }
1674
1675         return 0;
1676 }
1677
1678 #endif /* CONFIG_NO_SCAN_PROCESSING */
1679
1680
1681 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1682 {
1683 #ifdef CONFIG_NO_SCAN_PROCESSING
1684         return -1;
1685 #else /* CONFIG_NO_SCAN_PROCESSING */
1686         struct os_reltime now;
1687
1688         if (wpa_s->last_scan_res_used <= 0)
1689                 return -1;
1690
1691         os_get_reltime(&now);
1692         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1693                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1694                 return -1;
1695         }
1696
1697         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1698 #endif /* CONFIG_NO_SCAN_PROCESSING */
1699 }
1700
1701 #ifdef CONFIG_WNM
1702
1703 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1704 {
1705         struct wpa_supplicant *wpa_s = eloop_ctx;
1706
1707         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1708                 return;
1709
1710         if (!wpa_s->no_keep_alive) {
1711                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1712                            MAC2STR(wpa_s->bssid));
1713                 /* TODO: could skip this if normal data traffic has been sent */
1714                 /* TODO: Consider using some more appropriate data frame for
1715                  * this */
1716                 if (wpa_s->l2)
1717                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1718                                        (u8 *) "", 0);
1719         }
1720
1721 #ifdef CONFIG_SME
1722         if (wpa_s->sme.bss_max_idle_period) {
1723                 unsigned int msec;
1724                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1725                 if (msec > 100)
1726                         msec -= 100;
1727                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1728                                        wnm_bss_keep_alive, wpa_s, NULL);
1729         }
1730 #endif /* CONFIG_SME */
1731 }
1732
1733
1734 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1735                                    const u8 *ies, size_t ies_len)
1736 {
1737         struct ieee802_11_elems elems;
1738
1739         if (ies == NULL)
1740                 return;
1741
1742         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1743                 return;
1744
1745 #ifdef CONFIG_SME
1746         if (elems.bss_max_idle_period) {
1747                 unsigned int msec;
1748                 wpa_s->sme.bss_max_idle_period =
1749                         WPA_GET_LE16(elems.bss_max_idle_period);
1750                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1751                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1752                            (elems.bss_max_idle_period[2] & 0x01) ?
1753                            " (protected keep-live required)" : "");
1754                 if (wpa_s->sme.bss_max_idle_period == 0)
1755                         wpa_s->sme.bss_max_idle_period = 1;
1756                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1757                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1758                          /* msec times 1000 */
1759                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1760                         if (msec > 100)
1761                                 msec -= 100;
1762                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1763                                                wnm_bss_keep_alive, wpa_s,
1764                                                NULL);
1765                 }
1766         }
1767 #endif /* CONFIG_SME */
1768 }
1769
1770 #endif /* CONFIG_WNM */
1771
1772
1773 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1774 {
1775 #ifdef CONFIG_WNM
1776         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1777 #endif /* CONFIG_WNM */
1778 }
1779
1780
1781 #ifdef CONFIG_INTERWORKING
1782
1783 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1784                             size_t len)
1785 {
1786         int res;
1787
1788         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1789         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1790         if (res) {
1791                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1792         }
1793
1794         return res;
1795 }
1796
1797
1798 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1799                                             const u8 *ies, size_t ies_len)
1800 {
1801         struct ieee802_11_elems elems;
1802
1803         if (ies == NULL)
1804                 return;
1805
1806         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1807                 return;
1808
1809         if (elems.qos_map_set) {
1810                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1811                                  elems.qos_map_set_len);
1812         }
1813 }
1814
1815 #endif /* CONFIG_INTERWORKING */
1816
1817
1818 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1819                                           union wpa_event_data *data)
1820 {
1821         int l, len, found = 0, wpa_found, rsn_found;
1822         const u8 *p;
1823 #ifdef CONFIG_IEEE80211R
1824         u8 bssid[ETH_ALEN];
1825 #endif /* CONFIG_IEEE80211R */
1826
1827         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1828         if (data->assoc_info.req_ies)
1829                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1830                             data->assoc_info.req_ies_len);
1831         if (data->assoc_info.resp_ies) {
1832                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1833                             data->assoc_info.resp_ies_len);
1834 #ifdef CONFIG_TDLS
1835                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1836                                         data->assoc_info.resp_ies_len);
1837 #endif /* CONFIG_TDLS */
1838 #ifdef CONFIG_WNM
1839                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1840                                        data->assoc_info.resp_ies_len);
1841 #endif /* CONFIG_WNM */
1842 #ifdef CONFIG_INTERWORKING
1843                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1844                                                 data->assoc_info.resp_ies_len);
1845 #endif /* CONFIG_INTERWORKING */
1846         }
1847         if (data->assoc_info.beacon_ies)
1848                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1849                             data->assoc_info.beacon_ies,
1850                             data->assoc_info.beacon_ies_len);
1851         if (data->assoc_info.freq)
1852                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1853                         data->assoc_info.freq);
1854
1855         p = data->assoc_info.req_ies;
1856         l = data->assoc_info.req_ies_len;
1857
1858         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1859         while (p && l >= 2) {
1860                 len = p[1] + 2;
1861                 if (len > l) {
1862                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1863                                     p, l);
1864                         break;
1865                 }
1866                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1867                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1868                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1869                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1870                                 break;
1871                         found = 1;
1872                         wpa_find_assoc_pmkid(wpa_s);
1873                         break;
1874                 }
1875                 l -= len;
1876                 p += len;
1877         }
1878         if (!found && data->assoc_info.req_ies)
1879                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1880
1881 #ifdef CONFIG_IEEE80211R
1882 #ifdef CONFIG_SME
1883         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1884                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1885                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1886                                                  data->assoc_info.resp_ies,
1887                                                  data->assoc_info.resp_ies_len,
1888                                                  bssid) < 0) {
1889                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1890                                 "Reassociation Response failed");
1891                         wpa_supplicant_deauthenticate(
1892                                 wpa_s, WLAN_REASON_INVALID_IE);
1893                         return -1;
1894                 }
1895         }
1896
1897         p = data->assoc_info.resp_ies;
1898         l = data->assoc_info.resp_ies_len;
1899
1900 #ifdef CONFIG_WPS_STRICT
1901         if (p && wpa_s->current_ssid &&
1902             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1903                 struct wpabuf *wps;
1904                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1905                 if (wps == NULL) {
1906                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1907                                 "include WPS IE in (Re)Association Response");
1908                         return -1;
1909                 }
1910
1911                 if (wps_validate_assoc_resp(wps) < 0) {
1912                         wpabuf_free(wps);
1913                         wpa_supplicant_deauthenticate(
1914                                 wpa_s, WLAN_REASON_INVALID_IE);
1915                         return -1;
1916                 }
1917                 wpabuf_free(wps);
1918         }
1919 #endif /* CONFIG_WPS_STRICT */
1920
1921         /* Go through the IEs and make a copy of the MDIE, if present. */
1922         while (p && l >= 2) {
1923                 len = p[1] + 2;
1924                 if (len > l) {
1925                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1926                                     p, l);
1927                         break;
1928                 }
1929                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1930                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1931                         wpa_s->sme.ft_used = 1;
1932                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1933                                   MOBILITY_DOMAIN_ID_LEN);
1934                         break;
1935                 }
1936                 l -= len;
1937                 p += len;
1938         }
1939 #endif /* CONFIG_SME */
1940
1941         /* Process FT when SME is in the driver */
1942         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1943             wpa_ft_is_completed(wpa_s->wpa)) {
1944                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1945                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1946                                                  data->assoc_info.resp_ies,
1947                                                  data->assoc_info.resp_ies_len,
1948                                                  bssid) < 0) {
1949                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1950                                 "Reassociation Response failed");
1951                         wpa_supplicant_deauthenticate(
1952                                 wpa_s, WLAN_REASON_INVALID_IE);
1953                         return -1;
1954                 }
1955                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1956         }
1957
1958         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1959                              data->assoc_info.resp_ies_len);
1960 #endif /* CONFIG_IEEE80211R */
1961
1962         /* WPA/RSN IE from Beacon/ProbeResp */
1963         p = data->assoc_info.beacon_ies;
1964         l = data->assoc_info.beacon_ies_len;
1965
1966         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1967          */
1968         wpa_found = rsn_found = 0;
1969         while (p && l >= 2) {
1970                 len = p[1] + 2;
1971                 if (len > l) {
1972                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1973                                     p, l);
1974                         break;
1975                 }
1976                 if (!wpa_found &&
1977                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1978                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1979                         wpa_found = 1;
1980                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1981                 }
1982
1983                 if (!rsn_found &&
1984                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1985                         rsn_found = 1;
1986                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1987                 }
1988
1989                 l -= len;
1990                 p += len;
1991         }
1992
1993         if (!wpa_found && data->assoc_info.beacon_ies)
1994                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1995         if (!rsn_found && data->assoc_info.beacon_ies)
1996                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1997         if (wpa_found || rsn_found)
1998                 wpa_s->ap_ies_from_associnfo = 1;
1999
2000         if (wpa_s->assoc_freq && data->assoc_info.freq &&
2001             wpa_s->assoc_freq != data->assoc_info.freq) {
2002                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
2003                            "%u to %u MHz",
2004                            wpa_s->assoc_freq, data->assoc_info.freq);
2005                 wpa_supplicant_update_scan_results(wpa_s);
2006         }
2007
2008         wpa_s->assoc_freq = data->assoc_info.freq;
2009
2010         return 0;
2011 }
2012
2013
2014 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
2015 {
2016         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
2017
2018         if (!wpa_s->current_bss || !wpa_s->current_ssid)
2019                 return -1;
2020
2021         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
2022                 return 0;
2023
2024         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
2025                                         WPA_IE_VENDOR_TYPE);
2026         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
2027
2028         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
2029                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
2030             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
2031                                  bss_rsn ? 2 + bss_rsn[1] : 0))
2032                 return -1;
2033
2034         return 0;
2035 }
2036
2037
2038 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
2039                                        union wpa_event_data *data)
2040 {
2041         u8 bssid[ETH_ALEN];
2042         int ft_completed;
2043
2044 #ifdef CONFIG_AP
2045         if (wpa_s->ap_iface) {
2046                 if (!data)
2047                         return;
2048                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
2049                                     data->assoc_info.addr,
2050                                     data->assoc_info.req_ies,
2051                                     data->assoc_info.req_ies_len,
2052                                     data->assoc_info.reassoc);
2053                 return;
2054         }
2055 #endif /* CONFIG_AP */
2056
2057         eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
2058
2059         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
2060         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
2061                 return;
2062
2063         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
2064                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
2065                 wpa_supplicant_deauthenticate(
2066                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2067                 return;
2068         }
2069
2070         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
2071         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
2072                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
2073                         MACSTR, MAC2STR(bssid));
2074                 random_add_randomness(bssid, ETH_ALEN);
2075                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
2076                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2077                 wpas_notify_bssid_changed(wpa_s);
2078
2079                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
2080                         wpa_clear_keys(wpa_s, bssid);
2081                 }
2082                 if (wpa_supplicant_select_config(wpa_s) < 0) {
2083                         wpa_supplicant_deauthenticate(
2084                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2085                         return;
2086                 }
2087
2088                 if (wpa_s->conf->ap_scan == 1 &&
2089                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
2090                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
2091                                 wpa_msg(wpa_s, MSG_WARNING,
2092                                         "WPA/RSN IEs not updated");
2093                 }
2094         }
2095
2096 #ifdef CONFIG_SME
2097         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
2098         wpa_s->sme.prev_bssid_set = 1;
2099         wpa_s->sme.last_unprot_disconnect.sec = 0;
2100 #endif /* CONFIG_SME */
2101
2102         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
2103         if (wpa_s->current_ssid) {
2104                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
2105                  * initialized before association, but for other modes,
2106                  * initialize PC/SC here, if the current configuration needs
2107                  * smartcard or SIM/USIM. */
2108                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
2109         }
2110         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
2111         if (wpa_s->l2)
2112                 l2_packet_notify_auth_start(wpa_s->l2);
2113
2114         /*
2115          * Set portEnabled first to FALSE in order to get EAP state machine out
2116          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
2117          * state machine may transit to AUTHENTICATING state based on obsolete
2118          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
2119          * AUTHENTICATED without ever giving chance to EAP state machine to
2120          * reset the state.
2121          */
2122         if (!ft_completed) {
2123                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2124                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2125         }
2126         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
2127                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2128         /* 802.1X::portControl = Auto */
2129         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2130         wpa_s->eapol_received = 0;
2131         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2132             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2133             (wpa_s->current_ssid &&
2134              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2135                 if (wpa_s->current_ssid &&
2136                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2137                     (wpa_s->drv_flags &
2138                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2139                         /*
2140                          * Set the key after having received joined-IBSS event
2141                          * from the driver.
2142                          */
2143                         wpa_supplicant_set_wpa_none_key(wpa_s,
2144                                                         wpa_s->current_ssid);
2145                 }
2146                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2147                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2148         } else if (!ft_completed) {
2149                 /* Timeout for receiving the first EAPOL packet */
2150                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2151         }
2152         wpa_supplicant_cancel_scan(wpa_s);
2153
2154         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2155             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2156                 /*
2157                  * We are done; the driver will take care of RSN 4-way
2158                  * handshake.
2159                  */
2160                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2161                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2162                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2163                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2164         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2165                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2166                 /*
2167                  * The driver will take care of RSN 4-way handshake, so we need
2168                  * to allow EAPOL supplicant to complete its work without
2169                  * waiting for WPA supplicant.
2170                  */
2171                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2172         } else if (ft_completed) {
2173                 /*
2174                  * FT protocol completed - make sure EAPOL state machine ends
2175                  * up in authenticated.
2176                  */
2177                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2178                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2179                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2180                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2181         }
2182
2183         wpa_s->last_eapol_matches_bssid = 0;
2184
2185         if (wpa_s->pending_eapol_rx) {
2186                 struct os_reltime now, age;
2187                 os_get_reltime(&now);
2188                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2189                 if (age.sec == 0 && age.usec < 100000 &&
2190                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2191                     0) {
2192                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2193                                 "frame that was received just before "
2194                                 "association notification");
2195                         wpa_supplicant_rx_eapol(
2196                                 wpa_s, wpa_s->pending_eapol_rx_src,
2197                                 wpabuf_head(wpa_s->pending_eapol_rx),
2198                                 wpabuf_len(wpa_s->pending_eapol_rx));
2199                 }
2200                 wpabuf_free(wpa_s->pending_eapol_rx);
2201                 wpa_s->pending_eapol_rx = NULL;
2202         }
2203
2204         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2205              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2206             wpa_s->current_ssid &&
2207             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2208                 /* Set static WEP keys again */
2209                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2210         }
2211
2212 #ifdef CONFIG_IBSS_RSN
2213         if (wpa_s->current_ssid &&
2214             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2215             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2216             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2217             wpa_s->ibss_rsn == NULL) {
2218                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2219                 if (!wpa_s->ibss_rsn) {
2220                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2221                         wpa_supplicant_deauthenticate(
2222                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2223                         return;
2224                 }
2225
2226                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2227         }
2228 #endif /* CONFIG_IBSS_RSN */
2229
2230         wpas_wps_notify_assoc(wpa_s, bssid);
2231
2232         if (data) {
2233                 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2234                                     data->assoc_info.resp_ies_len,
2235                                     &data->assoc_info.wmm_params);
2236
2237                 if (wpa_s->reassoc_same_bss)
2238                         wmm_ac_restore_tspecs(wpa_s);
2239         }
2240 }
2241
2242
2243 static int disconnect_reason_recoverable(u16 reason_code)
2244 {
2245         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2246                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2247                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2248 }
2249
2250
2251 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2252                                           u16 reason_code,
2253                                           int locally_generated)
2254 {
2255         const u8 *bssid;
2256
2257         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2258                 /*
2259                  * At least Host AP driver and a Prism3 card seemed to be
2260                  * generating streams of disconnected events when configuring
2261                  * IBSS for WPA-None. Ignore them for now.
2262                  */
2263                 return;
2264         }
2265
2266         bssid = wpa_s->bssid;
2267         if (is_zero_ether_addr(bssid))
2268                 bssid = wpa_s->pending_bssid;
2269
2270         if (!is_zero_ether_addr(bssid) ||
2271             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2272                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2273                         " reason=%d%s",
2274                         MAC2STR(bssid), reason_code,
2275                         locally_generated ? " locally_generated=1" : "");
2276         }
2277 }
2278
2279
2280 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2281                                  int locally_generated)
2282 {
2283         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2284             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2285                 return 0; /* Not in 4-way handshake with PSK */
2286
2287         /*
2288          * It looks like connection was lost while trying to go through PSK
2289          * 4-way handshake. Filter out known disconnection cases that are caused
2290          * by something else than PSK mismatch to avoid confusing reports.
2291          */
2292
2293         if (locally_generated) {
2294                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2295                         return 0;
2296         }
2297
2298         return 1;
2299 }
2300
2301
2302 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2303                                                  u16 reason_code,
2304                                                  int locally_generated)
2305 {
2306         const u8 *bssid;
2307         int authenticating;
2308         u8 prev_pending_bssid[ETH_ALEN];
2309         struct wpa_bss *fast_reconnect = NULL;
2310         struct wpa_ssid *fast_reconnect_ssid = NULL;
2311         struct wpa_ssid *last_ssid;
2312
2313         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2314         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2315
2316         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2317                 /*
2318                  * At least Host AP driver and a Prism3 card seemed to be
2319                  * generating streams of disconnected events when configuring
2320                  * IBSS for WPA-None. Ignore them for now.
2321                  */
2322                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2323                         "IBSS/WPA-None mode");
2324                 return;
2325         }
2326
2327         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2328                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2329                         "pre-shared key may be incorrect");
2330                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2331                         return; /* P2P group removed */
2332                 wpas_auth_failed(wpa_s, "WRONG_KEY");
2333         }
2334         if (!wpa_s->disconnected &&
2335             (!wpa_s->auto_reconnect_disabled ||
2336              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2337              wpas_wps_searching(wpa_s))) {
2338                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2339                         "reconnect (wps=%d/%d wpa_state=%d)",
2340                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2341                         wpas_wps_searching(wpa_s),
2342                         wpa_s->wpa_state);
2343                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2344                     wpa_s->current_ssid &&
2345                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2346                     !locally_generated &&
2347                     disconnect_reason_recoverable(reason_code)) {
2348                         /*
2349                          * It looks like the AP has dropped association with
2350                          * us, but could allow us to get back in. Try to
2351                          * reconnect to the same BSS without full scan to save
2352                          * time for some common cases.
2353                          */
2354                         fast_reconnect = wpa_s->current_bss;
2355                         fast_reconnect_ssid = wpa_s->current_ssid;
2356                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2357                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2358                 else
2359                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2360                                 "immediate scan");
2361         } else {
2362                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2363                         "try to re-connect");
2364                 wpa_s->reassociate = 0;
2365                 wpa_s->disconnected = 1;
2366                 wpa_supplicant_cancel_sched_scan(wpa_s);
2367         }
2368         bssid = wpa_s->bssid;
2369         if (is_zero_ether_addr(bssid))
2370                 bssid = wpa_s->pending_bssid;
2371         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2372                 wpas_connection_failed(wpa_s, bssid);
2373         wpa_sm_notify_disassoc(wpa_s->wpa);
2374         if (locally_generated)
2375                 wpa_s->disconnect_reason = -reason_code;
2376         else
2377                 wpa_s->disconnect_reason = reason_code;
2378         wpas_notify_disconnect_reason(wpa_s);
2379         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2380                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2381                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2382         }
2383         last_ssid = wpa_s->current_ssid;
2384         wpa_supplicant_mark_disassoc(wpa_s);
2385
2386         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2387                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2388                 wpa_s->current_ssid = last_ssid;
2389         }
2390
2391         if (fast_reconnect &&
2392             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2393             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2394             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2395                              fast_reconnect->ssid_len) &&
2396             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2397 #ifndef CONFIG_NO_SCAN_PROCESSING
2398                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2399                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2400                                            fast_reconnect_ssid) < 0) {
2401                         /* Recover through full scan */
2402                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2403                 }
2404 #endif /* CONFIG_NO_SCAN_PROCESSING */
2405         } else if (fast_reconnect) {
2406                 /*
2407                  * Could not reconnect to the same BSS due to network being
2408                  * disabled. Use a new scan to match the alternative behavior
2409                  * above, i.e., to continue automatic reconnection attempt in a
2410                  * way that enforces disabled network rules.
2411                  */
2412                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2413         }
2414 }
2415
2416
2417 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2418 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2419 {
2420         struct wpa_supplicant *wpa_s = eloop_ctx;
2421
2422         if (!wpa_s->pending_mic_error_report)
2423                 return;
2424
2425         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2426         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2427         wpa_s->pending_mic_error_report = 0;
2428 }
2429 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2430
2431
2432 static void
2433 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2434                                          union wpa_event_data *data)
2435 {
2436         int pairwise;
2437         struct os_reltime t;
2438
2439         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2440         pairwise = (data && data->michael_mic_failure.unicast);
2441         os_get_reltime(&t);
2442         if ((wpa_s->last_michael_mic_error.sec &&
2443              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2444             wpa_s->pending_mic_error_report) {
2445                 if (wpa_s->pending_mic_error_report) {
2446                         /*
2447                          * Send the pending MIC error report immediately since
2448                          * we are going to start countermeasures and AP better
2449                          * do the same.
2450                          */
2451                         wpa_sm_key_request(wpa_s->wpa, 1,
2452                                            wpa_s->pending_mic_error_pairwise);
2453                 }
2454
2455                 /* Send the new MIC error report immediately since we are going
2456                  * to start countermeasures and AP better do the same.
2457                  */
2458                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2459
2460                 /* initialize countermeasures */
2461                 wpa_s->countermeasures = 1;
2462
2463                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2464
2465                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2466
2467                 /*
2468                  * Need to wait for completion of request frame. We do not get
2469                  * any callback for the message completion, so just wait a
2470                  * short while and hope for the best. */
2471                 os_sleep(0, 10000);
2472
2473                 wpa_drv_set_countermeasures(wpa_s, 1);
2474                 wpa_supplicant_deauthenticate(wpa_s,
2475                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2476                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2477                                      wpa_s, NULL);
2478                 eloop_register_timeout(60, 0,
2479                                        wpa_supplicant_stop_countermeasures,
2480                                        wpa_s, NULL);
2481                 /* TODO: mark the AP rejected for 60 second. STA is
2482                  * allowed to associate with another AP.. */
2483         } else {
2484 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2485                 if (wpa_s->mic_errors_seen) {
2486                         /*
2487                          * Reduce the effectiveness of Michael MIC error
2488                          * reports as a means for attacking against TKIP if
2489                          * more than one MIC failure is noticed with the same
2490                          * PTK. We delay the transmission of the reports by a
2491                          * random time between 0 and 60 seconds in order to
2492                          * force the attacker wait 60 seconds before getting
2493                          * the information on whether a frame resulted in a MIC
2494                          * failure.
2495                          */
2496                         u8 rval[4];
2497                         int sec;
2498
2499                         if (os_get_random(rval, sizeof(rval)) < 0)
2500                                 sec = os_random() % 60;
2501                         else
2502                                 sec = WPA_GET_BE32(rval) % 60;
2503                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2504                                 "report %d seconds", sec);
2505                         wpa_s->pending_mic_error_report = 1;
2506                         wpa_s->pending_mic_error_pairwise = pairwise;
2507                         eloop_cancel_timeout(
2508                                 wpa_supplicant_delayed_mic_error_report,
2509                                 wpa_s, NULL);
2510                         eloop_register_timeout(
2511                                 sec, os_random() % 1000000,
2512                                 wpa_supplicant_delayed_mic_error_report,
2513                                 wpa_s, NULL);
2514                 } else {
2515                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2516                 }
2517 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2518                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2519 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2520         }
2521         wpa_s->last_michael_mic_error = t;
2522         wpa_s->mic_errors_seen++;
2523 }
2524
2525
2526 #ifdef CONFIG_TERMINATE_ONLASTIF
2527 static int any_interfaces(struct wpa_supplicant *head)
2528 {
2529         struct wpa_supplicant *wpa_s;
2530
2531         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2532                 if (!wpa_s->interface_removed)
2533                         return 1;
2534         return 0;
2535 }
2536 #endif /* CONFIG_TERMINATE_ONLASTIF */
2537
2538
2539 static void
2540 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2541                                       union wpa_event_data *data)
2542 {
2543         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2544                 return;
2545
2546         switch (data->interface_status.ievent) {
2547         case EVENT_INTERFACE_ADDED:
2548                 if (!wpa_s->interface_removed)
2549                         break;
2550                 wpa_s->interface_removed = 0;
2551                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2552                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2553                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2554                                 "driver after interface was added");
2555                 }
2556                 break;
2557         case EVENT_INTERFACE_REMOVED:
2558                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2559                 wpa_s->interface_removed = 1;
2560                 wpa_supplicant_mark_disassoc(wpa_s);
2561                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2562                 l2_packet_deinit(wpa_s->l2);
2563                 wpa_s->l2 = NULL;
2564 #ifdef CONFIG_TERMINATE_ONLASTIF
2565                 /* check if last interface */
2566                 if (!any_interfaces(wpa_s->global->ifaces))
2567                         eloop_terminate();
2568 #endif /* CONFIG_TERMINATE_ONLASTIF */
2569                 break;
2570         }
2571 }
2572
2573
2574 #ifdef CONFIG_PEERKEY
2575 static void
2576 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2577                               union wpa_event_data *data)
2578 {
2579         if (data == NULL)
2580                 return;
2581         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2582 }
2583 #endif /* CONFIG_PEERKEY */
2584
2585
2586 #ifdef CONFIG_TDLS
2587 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2588                                       union wpa_event_data *data)
2589 {
2590         if (data == NULL)
2591                 return;
2592         switch (data->tdls.oper) {
2593         case TDLS_REQUEST_SETUP:
2594                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2595                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2596                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2597                 else
2598                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2599                 break;
2600         case TDLS_REQUEST_TEARDOWN:
2601                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2602                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2603                                                data->tdls.reason_code);
2604                 else
2605                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2606                                           data->tdls.peer);
2607                 break;
2608         case TDLS_REQUEST_DISCOVER:
2609                         wpa_tdls_send_discovery_request(wpa_s->wpa,
2610                                                         data->tdls.peer);
2611                 break;
2612         }
2613 }
2614 #endif /* CONFIG_TDLS */
2615
2616
2617 #ifdef CONFIG_WNM
2618 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2619                                      union wpa_event_data *data)
2620 {
2621         if (data == NULL)
2622                 return;
2623         switch (data->wnm.oper) {
2624         case WNM_OPER_SLEEP:
2625                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2626                            "(action=%d, intval=%d)",
2627                            data->wnm.sleep_action, data->wnm.sleep_intval);
2628                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2629                                              data->wnm.sleep_intval, NULL);
2630                 break;
2631         }
2632 }
2633 #endif /* CONFIG_WNM */
2634
2635
2636 #ifdef CONFIG_IEEE80211R
2637 static void
2638 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2639                                  union wpa_event_data *data)
2640 {
2641         if (data == NULL)
2642                 return;
2643
2644         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2645                                     data->ft_ies.ies_len,
2646                                     data->ft_ies.ft_action,
2647                                     data->ft_ies.target_ap,
2648                                     data->ft_ies.ric_ies,
2649                                     data->ft_ies.ric_ies_len) < 0) {
2650                 /* TODO: prevent MLME/driver from trying to associate? */
2651         }
2652 }
2653 #endif /* CONFIG_IEEE80211R */
2654
2655
2656 #ifdef CONFIG_IBSS_RSN
2657 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2658                                                 union wpa_event_data *data)
2659 {
2660         struct wpa_ssid *ssid;
2661         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2662                 return;
2663         if (data == NULL)
2664                 return;
2665         ssid = wpa_s->current_ssid;
2666         if (ssid == NULL)
2667                 return;
2668         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2669                 return;
2670
2671         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2672 }
2673
2674
2675 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2676                                            union wpa_event_data *data)
2677 {
2678         struct wpa_ssid *ssid = wpa_s->current_ssid;
2679
2680         if (ssid == NULL)
2681                 return;
2682
2683         /* check if the ssid is correctly configured as IBSS/RSN */
2684         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2685                 return;
2686
2687         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2688                              data->rx_mgmt.frame_len);
2689 }
2690 #endif /* CONFIG_IBSS_RSN */
2691
2692
2693 #ifdef CONFIG_IEEE80211R
2694 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2695                          size_t len)
2696 {
2697         const u8 *sta_addr, *target_ap_addr;
2698         u16 status;
2699
2700         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2701         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2702                 return; /* only SME case supported for now */
2703         if (len < 1 + 2 * ETH_ALEN + 2)
2704                 return;
2705         if (data[0] != 2)
2706                 return; /* Only FT Action Response is supported for now */
2707         sta_addr = data + 1;
2708         target_ap_addr = data + 1 + ETH_ALEN;
2709         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2710         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2711                 MACSTR " TargetAP " MACSTR " status %u",
2712                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2713
2714         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2715                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2716                         " in FT Action Response", MAC2STR(sta_addr));
2717                 return;
2718         }
2719
2720         if (status) {
2721                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2722                         "failure (status code %d)", status);
2723                 /* TODO: report error to FT code(?) */
2724                 return;
2725         }
2726
2727         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2728                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2729                                     target_ap_addr, NULL, 0) < 0)
2730                 return;
2731
2732 #ifdef CONFIG_SME
2733         {
2734                 struct wpa_bss *bss;
2735                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2736                 if (bss)
2737                         wpa_s->sme.freq = bss->freq;
2738                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2739                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2740                               WLAN_AUTH_FT);
2741         }
2742 #endif /* CONFIG_SME */
2743 }
2744 #endif /* CONFIG_IEEE80211R */
2745
2746
2747 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2748                                                struct unprot_deauth *e)
2749 {
2750 #ifdef CONFIG_IEEE80211W
2751         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2752                    "dropped: " MACSTR " -> " MACSTR
2753                    " (reason code %u)",
2754                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2755         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2756 #endif /* CONFIG_IEEE80211W */
2757 }
2758
2759
2760 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2761                                                  struct unprot_disassoc *e)
2762 {
2763 #ifdef CONFIG_IEEE80211W
2764         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2765                    "dropped: " MACSTR " -> " MACSTR
2766                    " (reason code %u)",
2767                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2768         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2769 #endif /* CONFIG_IEEE80211W */
2770 }
2771
2772
2773 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2774                                   u16 reason_code, int locally_generated,
2775                                   const u8 *ie, size_t ie_len, int deauth)
2776 {
2777 #ifdef CONFIG_AP
2778         if (wpa_s->ap_iface && addr) {
2779                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2780                 return;
2781         }
2782
2783         if (wpa_s->ap_iface) {
2784                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2785                 return;
2786         }
2787 #endif /* CONFIG_AP */
2788
2789         if (!locally_generated)
2790                 wpa_s->own_disconnect_req = 0;
2791
2792         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2793
2794         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2795               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2796                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2797                eapol_sm_failed(wpa_s->eapol))) &&
2798              !wpa_s->eap_expected_failure))
2799                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2800
2801 #ifdef CONFIG_P2P
2802         if (deauth && reason_code > 0) {
2803                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2804                                           locally_generated) > 0) {
2805                         /*
2806                          * The interface was removed, so cannot continue
2807                          * processing any additional operations after this.
2808                          */
2809                         return;
2810                 }
2811         }
2812 #endif /* CONFIG_P2P */
2813
2814         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2815                                              locally_generated);
2816 }
2817
2818
2819 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2820                                 struct disassoc_info *info)
2821 {
2822         u16 reason_code = 0;
2823         int locally_generated = 0;
2824         const u8 *addr = NULL;
2825         const u8 *ie = NULL;
2826         size_t ie_len = 0;
2827
2828         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2829
2830         if (info) {
2831                 addr = info->addr;
2832                 ie = info->ie;
2833                 ie_len = info->ie_len;
2834                 reason_code = info->reason_code;
2835                 locally_generated = info->locally_generated;
2836                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2837                         locally_generated ? " (locally generated)" : "");
2838                 if (addr)
2839                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2840                                 MAC2STR(addr));
2841                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2842                             ie, ie_len);
2843         }
2844
2845 #ifdef CONFIG_AP
2846         if (wpa_s->ap_iface && info && info->addr) {
2847                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2848                 return;
2849         }
2850
2851         if (wpa_s->ap_iface) {
2852                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2853                 return;
2854         }
2855 #endif /* CONFIG_AP */
2856
2857 #ifdef CONFIG_P2P
2858         if (info) {
2859                 wpas_p2p_disassoc_notif(
2860                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2861                         locally_generated);
2862         }
2863 #endif /* CONFIG_P2P */
2864
2865         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2866                 sme_event_disassoc(wpa_s, info);
2867
2868         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2869                               ie, ie_len, 0);
2870 }
2871
2872
2873 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2874                               struct deauth_info *info)
2875 {
2876         u16 reason_code = 0;
2877         int locally_generated = 0;
2878         const u8 *addr = NULL;
2879         const u8 *ie = NULL;
2880         size_t ie_len = 0;
2881
2882         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2883
2884         if (info) {
2885                 addr = info->addr;
2886                 ie = info->ie;
2887                 ie_len = info->ie_len;
2888                 reason_code = info->reason_code;
2889                 locally_generated = info->locally_generated;
2890                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2891                         reason_code,
2892                         locally_generated ? " (locally generated)" : "");
2893                 if (addr) {
2894                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2895                                 MAC2STR(addr));
2896                 }
2897                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2898                             ie, ie_len);
2899         }
2900
2901         wpa_reset_ft_completed(wpa_s->wpa);
2902
2903         wpas_event_disconnect(wpa_s, addr, reason_code,
2904                               locally_generated, ie, ie_len, 1);
2905 }
2906
2907
2908 static const char * reg_init_str(enum reg_change_initiator init)
2909 {
2910         switch (init) {
2911         case REGDOM_SET_BY_CORE:
2912                 return "CORE";
2913         case REGDOM_SET_BY_USER:
2914                 return "USER";
2915         case REGDOM_SET_BY_DRIVER:
2916                 return "DRIVER";
2917         case REGDOM_SET_BY_COUNTRY_IE:
2918                 return "COUNTRY_IE";
2919         case REGDOM_BEACON_HINT:
2920                 return "BEACON_HINT";
2921         }
2922         return "?";
2923 }
2924
2925
2926 static const char * reg_type_str(enum reg_type type)
2927 {
2928         switch (type) {
2929         case REGDOM_TYPE_UNKNOWN:
2930                 return "UNKNOWN";
2931         case REGDOM_TYPE_COUNTRY:
2932                 return "COUNTRY";
2933         case REGDOM_TYPE_WORLD:
2934                 return "WORLD";
2935         case REGDOM_TYPE_CUSTOM_WORLD:
2936                 return "CUSTOM_WORLD";
2937         case REGDOM_TYPE_INTERSECTION:
2938                 return "INTERSECTION";
2939         }
2940         return "?";
2941 }
2942
2943
2944 static void wpa_supplicant_update_channel_list(
2945         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
2946 {
2947         struct wpa_supplicant *ifs;
2948
2949         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
2950                 reg_init_str(info->initiator), reg_type_str(info->type),
2951                 info->alpha2[0] ? " alpha2=" : "",
2952                 info->alpha2[0] ? info->alpha2 : "");
2953
2954         if (wpa_s->drv_priv == NULL)
2955                 return; /* Ignore event during drv initialization */
2956
2957         free_hw_features(wpa_s);
2958         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2959                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2960
2961         wpas_p2p_update_channel_list(wpa_s);
2962
2963         /*
2964          * Check other interfaces to see if they share the same radio. If
2965          * so, they get updated with this same hw mode info.
2966          */
2967         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2968                          radio_list) {
2969                 if (ifs != wpa_s) {
2970                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2971                                    ifs->ifname);
2972                         free_hw_features(ifs);
2973                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2974                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2975                 }
2976         }
2977
2978         /* Restart sched_scan with updated channel list */
2979         if (wpa_s->sched_scanning) {
2980                 wpa_dbg(wpa_s, MSG_DEBUG,
2981                         "Channel list changed restart sched scan.");
2982                 wpa_supplicant_cancel_sched_scan(wpa_s);
2983                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2984         }
2985 }
2986
2987
2988 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2989                                       const u8 *frame, size_t len, int freq,
2990                                       int rssi)
2991 {
2992         const struct ieee80211_mgmt *mgmt;
2993         const u8 *payload;
2994         size_t plen;
2995         u8 category;
2996
2997         if (len < IEEE80211_HDRLEN + 2)
2998                 return;
2999
3000         mgmt = (const struct ieee80211_mgmt *) frame;
3001         payload = frame + IEEE80211_HDRLEN;
3002         category = *payload++;
3003         plen = len - IEEE80211_HDRLEN - 1;
3004
3005         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
3006                 " Category=%u DataLen=%d freq=%d MHz",
3007                 MAC2STR(mgmt->sa), category, (int) plen, freq);
3008
3009         if (category == WLAN_ACTION_WMM) {
3010                 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
3011                 return;
3012         }
3013
3014 #ifdef CONFIG_IEEE80211R
3015         if (category == WLAN_ACTION_FT) {
3016                 ft_rx_action(wpa_s, payload, plen);
3017                 return;
3018         }
3019 #endif /* CONFIG_IEEE80211R */
3020
3021 #ifdef CONFIG_IEEE80211W
3022 #ifdef CONFIG_SME
3023         if (category == WLAN_ACTION_SA_QUERY) {
3024                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
3025                 return;
3026         }
3027 #endif /* CONFIG_SME */
3028 #endif /* CONFIG_IEEE80211W */
3029
3030 #ifdef CONFIG_WNM
3031         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
3032                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
3033                 return;
3034         }
3035 #endif /* CONFIG_WNM */
3036
3037 #ifdef CONFIG_GAS
3038         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
3039              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
3040             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
3041                          mgmt->u.action.category,
3042                          payload, plen, freq) == 0)
3043                 return;
3044 #endif /* CONFIG_GAS */
3045
3046 #ifdef CONFIG_TDLS
3047         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
3048             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
3049                 wpa_dbg(wpa_s, MSG_DEBUG,
3050                         "TDLS: Received Discovery Response from " MACSTR,
3051                         MAC2STR(mgmt->sa));
3052                 return;
3053         }
3054 #endif /* CONFIG_TDLS */
3055
3056 #ifdef CONFIG_INTERWORKING
3057         if (category == WLAN_ACTION_QOS && plen >= 1 &&
3058             payload[0] == QOS_QOS_MAP_CONFIG) {
3059                 const u8 *pos = payload + 1;
3060                 size_t qlen = plen - 1;
3061                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
3062                         MACSTR, MAC2STR(mgmt->sa));
3063                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
3064                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
3065                     pos[1] <= qlen - 2 && pos[1] >= 16)
3066                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
3067                 return;
3068         }
3069 #endif /* CONFIG_INTERWORKING */
3070
3071         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3072             payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
3073                 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
3074                 return;
3075         }
3076
3077         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3078             payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
3079                 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
3080                                                          payload + 1, plen - 1,
3081                                                          rssi);
3082                 return;
3083         }
3084
3085         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
3086                            category, payload, plen, freq);
3087         if (wpa_s->ifmsh)
3088                 mesh_mpm_action_rx(wpa_s, mgmt, len);
3089 }
3090
3091
3092 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
3093                                              union wpa_event_data *event)
3094 {
3095 #ifdef CONFIG_P2P
3096         struct wpa_supplicant *ifs;
3097 #endif /* CONFIG_P2P */
3098         struct wpa_freq_range_list *list;
3099         char *str = NULL;
3100
3101         list = &event->freq_range;
3102
3103         if (list->num)
3104                 str = freq_range_list_str(list);
3105         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
3106                 str ? str : "");
3107
3108 #ifdef CONFIG_P2P
3109         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
3110                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
3111                         __func__);
3112         } else {
3113                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
3114                 wpas_p2p_update_channel_list(wpa_s);
3115         }
3116
3117         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3118                 int freq;
3119                 if (!ifs->current_ssid ||
3120                     !ifs->current_ssid->p2p_group ||
3121                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
3122                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
3123                         continue;
3124
3125                 freq = ifs->current_ssid->frequency;
3126                 if (!freq_range_list_includes(list, freq)) {
3127                         wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
3128                                 freq);
3129                         continue;
3130                 }
3131
3132                 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
3133                         freq);
3134                 /* TODO: Consider using CSA or removing the group within
3135                  * wpa_supplicant */
3136                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
3137         }
3138 #endif /* CONFIG_P2P */
3139
3140         os_free(str);
3141 }
3142
3143
3144 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3145                                             union wpa_event_data *data)
3146 {
3147         wpa_dbg(wpa_s, MSG_DEBUG,
3148                 "Connection authorized by device, previous state %d",
3149                 wpa_s->wpa_state);
3150         if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3151                 wpa_supplicant_cancel_auth_timeout(wpa_s);
3152                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3153                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3154                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3155         }
3156         wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3157         wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3158                                data->assoc_info.ptk_kck_len,
3159                                data->assoc_info.ptk_kek,
3160                                data->assoc_info.ptk_kek_len);
3161 }
3162
3163
3164 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3165                           union wpa_event_data *data)
3166 {
3167         struct wpa_supplicant *wpa_s = ctx;
3168         int resched;
3169
3170         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3171             event != EVENT_INTERFACE_ENABLED &&
3172             event != EVENT_INTERFACE_STATUS &&
3173             event != EVENT_SCHED_SCAN_STOPPED) {
3174                 wpa_dbg(wpa_s, MSG_DEBUG,
3175                         "Ignore event %s (%d) while interface is disabled",
3176                         event_to_string(event), event);
3177                 return;
3178         }
3179
3180 #ifndef CONFIG_NO_STDOUT_DEBUG
3181 {
3182         int level = MSG_DEBUG;
3183
3184         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3185                 const struct ieee80211_hdr *hdr;
3186                 u16 fc;
3187                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3188                 fc = le_to_host16(hdr->frame_control);
3189                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3190                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3191                         level = MSG_EXCESSIVE;
3192         }
3193
3194         wpa_dbg(wpa_s, level, "Event %s (%d) received",
3195                 event_to_string(event), event);
3196 }
3197 #endif /* CONFIG_NO_STDOUT_DEBUG */
3198
3199         switch (event) {
3200         case EVENT_AUTH:
3201                 sme_event_auth(wpa_s, data);
3202                 break;
3203         case EVENT_ASSOC:
3204                 wpa_supplicant_event_assoc(wpa_s, data);
3205                 if (data && data->assoc_info.authorized)
3206                         wpa_supplicant_event_assoc_auth(wpa_s, data);
3207                 break;
3208         case EVENT_DISASSOC:
3209                 wpas_event_disassoc(wpa_s,
3210                                     data ? &data->disassoc_info : NULL);
3211                 break;
3212         case EVENT_DEAUTH:
3213                 wpas_event_deauth(wpa_s,
3214                                   data ? &data->deauth_info : NULL);
3215                 break;
3216         case EVENT_MICHAEL_MIC_FAILURE:
3217                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3218                 break;
3219 #ifndef CONFIG_NO_SCAN_PROCESSING
3220         case EVENT_SCAN_STARTED:
3221                 os_get_reltime(&wpa_s->scan_start_time);
3222                 if (wpa_s->own_scan_requested) {
3223                         struct os_reltime diff;
3224
3225                         os_reltime_sub(&wpa_s->scan_start_time,
3226                                        &wpa_s->scan_trigger_time, &diff);
3227                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3228                                 diff.sec, diff.usec);
3229                         wpa_s->own_scan_requested = 0;
3230                         wpa_s->own_scan_running = 1;
3231                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3232                             wpa_s->manual_scan_use_id) {
3233                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3234                                              WPA_EVENT_SCAN_STARTED "id=%u",
3235                                              wpa_s->manual_scan_id);
3236                         } else {
3237                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3238                                              WPA_EVENT_SCAN_STARTED);
3239                         }
3240                 } else {
3241                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3242                         wpa_s->radio->external_scan_running = 1;
3243                         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3244                 }
3245                 break;
3246         case EVENT_SCAN_RESULTS:
3247                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
3248                         struct os_reltime now, diff;
3249                         os_get_reltime(&now);
3250                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3251                         wpa_s->scan_start_time.sec = 0;
3252                         wpa_s->scan_start_time.usec = 0;
3253                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3254                                 diff.sec, diff.usec);
3255                 }
3256                 if (wpa_supplicant_event_scan_results(wpa_s, data))
3257                         break; /* interface may have been removed */
3258                 wpa_s->own_scan_running = 0;
3259                 wpa_s->radio->external_scan_running = 0;
3260                 radio_work_check_next(wpa_s);
3261                 break;
3262 #endif /* CONFIG_NO_SCAN_PROCESSING */
3263         case EVENT_ASSOCINFO:
3264                 wpa_supplicant_event_associnfo(wpa_s, data);
3265                 break;
3266         case EVENT_INTERFACE_STATUS:
3267                 wpa_supplicant_event_interface_status(wpa_s, data);
3268                 break;
3269         case EVENT_PMKID_CANDIDATE:
3270                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3271                 break;
3272 #ifdef CONFIG_PEERKEY
3273         case EVENT_STKSTART:
3274                 wpa_supplicant_event_stkstart(wpa_s, data);
3275                 break;
3276 #endif /* CONFIG_PEERKEY */
3277 #ifdef CONFIG_TDLS
3278         case EVENT_TDLS:
3279                 wpa_supplicant_event_tdls(wpa_s, data);
3280                 break;
3281 #endif /* CONFIG_TDLS */
3282 #ifdef CONFIG_WNM
3283         case EVENT_WNM:
3284                 wpa_supplicant_event_wnm(wpa_s, data);
3285                 break;
3286 #endif /* CONFIG_WNM */
3287 #ifdef CONFIG_IEEE80211R
3288         case EVENT_FT_RESPONSE:
3289                 wpa_supplicant_event_ft_response(wpa_s, data);
3290                 break;
3291 #endif /* CONFIG_IEEE80211R */
3292 #ifdef CONFIG_IBSS_RSN
3293         case EVENT_IBSS_RSN_START:
3294                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3295                 break;
3296 #endif /* CONFIG_IBSS_RSN */
3297         case EVENT_ASSOC_REJECT:
3298                 if (data->assoc_reject.bssid)
3299                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3300                                 "bssid=" MACSTR " status_code=%u",
3301                                 MAC2STR(data->assoc_reject.bssid),
3302                                 data->assoc_reject.status_code);
3303                 else
3304                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3305                                 "status_code=%u",
3306                                 data->assoc_reject.status_code);
3307                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3308                         sme_event_assoc_reject(wpa_s, data);
3309                 else {
3310                         const u8 *bssid = data->assoc_reject.bssid;
3311                         if (bssid == NULL || is_zero_ether_addr(bssid))
3312                                 bssid = wpa_s->pending_bssid;
3313                         wpas_connection_failed(wpa_s, bssid);
3314                         wpa_supplicant_mark_disassoc(wpa_s);
3315                 }
3316                 break;
3317         case EVENT_AUTH_TIMED_OUT:
3318                 /* It is possible to get this event from earlier connection */
3319                 if (wpa_s->current_ssid &&
3320                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3321                         wpa_dbg(wpa_s, MSG_DEBUG,
3322                                 "Ignore AUTH_TIMED_OUT in mesh configuration");
3323                         break;
3324                 }
3325                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3326                         sme_event_auth_timed_out(wpa_s, data);
3327                 break;
3328         case EVENT_ASSOC_TIMED_OUT:
3329                 /* It is possible to get this event from earlier connection */
3330                 if (wpa_s->current_ssid &&
3331                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3332                         wpa_dbg(wpa_s, MSG_DEBUG,
3333                                 "Ignore ASSOC_TIMED_OUT in mesh configuration");
3334                         break;
3335                 }
3336                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3337                         sme_event_assoc_timed_out(wpa_s, data);
3338                 break;
3339         case EVENT_TX_STATUS:
3340                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3341                         " type=%d stype=%d",
3342                         MAC2STR(data->tx_status.dst),
3343                         data->tx_status.type, data->tx_status.stype);
3344 #ifdef CONFIG_AP
3345                 if (wpa_s->ap_iface == NULL) {
3346 #ifdef CONFIG_OFFCHANNEL
3347                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3348                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3349                                 offchannel_send_action_tx_status(
3350                                         wpa_s, data->tx_status.dst,
3351                                         data->tx_status.data,
3352                                         data->tx_status.data_len,
3353                                         data->tx_status.ack ?
3354                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3355                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3356 #endif /* CONFIG_OFFCHANNEL */
3357                         break;
3358                 }
3359 #endif /* CONFIG_AP */
3360 #ifdef CONFIG_OFFCHANNEL
3361                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3362                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3363                 /*
3364                  * Catch TX status events for Action frames we sent via group
3365                  * interface in GO mode.
3366                  */
3367                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3368                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3369                     os_memcmp(wpa_s->parent->pending_action_dst,
3370                               data->tx_status.dst, ETH_ALEN) == 0) {
3371                         offchannel_send_action_tx_status(
3372                                 wpa_s->parent, data->tx_status.dst,
3373                                 data->tx_status.data,
3374                                 data->tx_status.data_len,
3375                                 data->tx_status.ack ?
3376                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3377                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3378                         break;
3379                 }
3380 #endif /* CONFIG_OFFCHANNEL */
3381 #ifdef CONFIG_AP
3382                 switch (data->tx_status.type) {
3383                 case WLAN_FC_TYPE_MGMT:
3384                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3385                                       data->tx_status.data_len,
3386                                       data->tx_status.stype,
3387                                       data->tx_status.ack);
3388                         break;
3389                 case WLAN_FC_TYPE_DATA:
3390                         ap_tx_status(wpa_s, data->tx_status.dst,
3391                                      data->tx_status.data,
3392                                      data->tx_status.data_len,
3393                                      data->tx_status.ack);
3394                         break;
3395                 }
3396 #endif /* CONFIG_AP */
3397                 break;
3398 #ifdef CONFIG_AP
3399         case EVENT_EAPOL_TX_STATUS:
3400                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3401                                    data->eapol_tx_status.data,
3402                                    data->eapol_tx_status.data_len,
3403                                    data->eapol_tx_status.ack);
3404                 break;
3405         case EVENT_DRIVER_CLIENT_POLL_OK:
3406                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3407                 break;
3408         case EVENT_RX_FROM_UNKNOWN:
3409                 if (wpa_s->ap_iface == NULL)
3410                         break;
3411                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3412                                        data->rx_from_unknown.wds);
3413                 break;
3414         case EVENT_CH_SWITCH:
3415                 if (!data)
3416                         break;
3417                 if (!wpa_s->ap_iface) {
3418                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3419                                 "event in non-AP mode");
3420                         break;
3421                 }
3422
3423                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3424                                   data->ch_switch.ht_enabled,
3425                                   data->ch_switch.ch_offset,
3426                                   data->ch_switch.ch_width,
3427                                   data->ch_switch.cf1,
3428                                   data->ch_switch.cf2);
3429                 break;
3430 #ifdef NEED_AP_MLME
3431         case EVENT_DFS_RADAR_DETECTED:
3432                 if (data)
3433                         wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event);
3434                 break;
3435         case EVENT_DFS_CAC_STARTED:
3436                 if (data)
3437                         wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
3438                 break;
3439         case EVENT_DFS_CAC_FINISHED:
3440                 if (data)
3441                         wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
3442                 break;
3443         case EVENT_DFS_CAC_ABORTED:
3444                 if (data)
3445                         wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
3446                 break;
3447         case EVENT_DFS_NOP_FINISHED:
3448                 if (data)
3449                         wpas_event_dfs_cac_nop_finished(wpa_s,
3450                                                         &data->dfs_event);
3451                 break;
3452 #endif /* NEED_AP_MLME */
3453 #endif /* CONFIG_AP */
3454         case EVENT_RX_MGMT: {
3455                 u16 fc, stype;
3456                 const struct ieee80211_mgmt *mgmt;
3457
3458 #ifdef CONFIG_TESTING_OPTIONS
3459                 if (wpa_s->ext_mgmt_frame_handling) {
3460                         struct rx_mgmt *rx = &data->rx_mgmt;
3461                         size_t hex_len = 2 * rx->frame_len + 1;
3462                         char *hex = os_malloc(hex_len);
3463                         if (hex) {
3464                                 wpa_snprintf_hex(hex, hex_len,
3465                                                  rx->frame, rx->frame_len);
3466                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3467                                         rx->freq, rx->datarate, rx->ssi_signal,
3468                                         hex);
3469                                 os_free(hex);
3470                         }
3471                         break;
3472                 }
3473 #endif /* CONFIG_TESTING_OPTIONS */
3474
3475                 mgmt = (const struct ieee80211_mgmt *)
3476                         data->rx_mgmt.frame;
3477                 fc = le_to_host16(mgmt->frame_control);
3478                 stype = WLAN_FC_GET_STYPE(fc);
3479
3480 #ifdef CONFIG_AP
3481                 if (wpa_s->ap_iface == NULL) {
3482 #endif /* CONFIG_AP */
3483 #ifdef CONFIG_P2P
3484                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3485                             data->rx_mgmt.frame_len > 24) {
3486                                 const u8 *src = mgmt->sa;
3487                                 const u8 *ie = mgmt->u.probe_req.variable;
3488                                 size_t ie_len = data->rx_mgmt.frame_len -
3489                                         (mgmt->u.probe_req.variable -
3490                                          data->rx_mgmt.frame);
3491                                 wpas_p2p_probe_req_rx(
3492                                         wpa_s, src, mgmt->da,
3493                                         mgmt->bssid, ie, ie_len,
3494                                         data->rx_mgmt.freq,
3495                                         data->rx_mgmt.ssi_signal);
3496                                 break;
3497                         }
3498 #endif /* CONFIG_P2P */
3499 #ifdef CONFIG_IBSS_RSN
3500                         if (wpa_s->current_ssid &&
3501                             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3502                             stype == WLAN_FC_STYPE_AUTH &&
3503                             data->rx_mgmt.frame_len >= 30) {
3504                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3505                                 break;
3506                         }
3507 #endif /* CONFIG_IBSS_RSN */
3508
3509                         if (stype == WLAN_FC_STYPE_ACTION) {
3510                                 wpas_event_rx_mgmt_action(
3511                                         wpa_s, data->rx_mgmt.frame,
3512                                         data->rx_mgmt.frame_len,
3513                                         data->rx_mgmt.freq,
3514                                         data->rx_mgmt.ssi_signal);
3515                                 break;
3516                         }
3517
3518                         if (wpa_s->ifmsh) {
3519                                 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3520                                 break;
3521                         }
3522
3523                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3524                                 "management frame in non-AP mode");
3525                         break;
3526 #ifdef CONFIG_AP
3527                 }
3528
3529                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3530                     data->rx_mgmt.frame_len > 24) {
3531                         const u8 *ie = mgmt->u.probe_req.variable;
3532                         size_t ie_len = data->rx_mgmt.frame_len -
3533                                 (mgmt->u.probe_req.variable -
3534                                  data->rx_mgmt.frame);
3535
3536                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3537                                          mgmt->bssid, ie, ie_len,
3538                                          data->rx_mgmt.ssi_signal);
3539                 }
3540
3541                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3542 #endif /* CONFIG_AP */
3543                 break;
3544                 }
3545         case EVENT_RX_PROBE_REQ:
3546                 if (data->rx_probe_req.sa == NULL ||
3547                     data->rx_probe_req.ie == NULL)
3548                         break;
3549 #ifdef CONFIG_AP
3550                 if (wpa_s->ap_iface) {
3551                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3552                                              data->rx_probe_req.sa,
3553                                              data->rx_probe_req.da,
3554                                              data->rx_probe_req.bssid,
3555                                              data->rx_probe_req.ie,
3556                                              data->rx_probe_req.ie_len,
3557                                              data->rx_probe_req.ssi_signal);
3558                         break;
3559                 }
3560 #endif /* CONFIG_AP */
3561                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3562                                       data->rx_probe_req.da,
3563                                       data->rx_probe_req.bssid,
3564                                       data->rx_probe_req.ie,
3565                                       data->rx_probe_req.ie_len,
3566                                       0,
3567                                       data->rx_probe_req.ssi_signal);
3568                 break;
3569         case EVENT_REMAIN_ON_CHANNEL:
3570 #ifdef CONFIG_OFFCHANNEL
3571                 offchannel_remain_on_channel_cb(
3572                         wpa_s, data->remain_on_channel.freq,
3573                         data->remain_on_channel.duration);
3574 #endif /* CONFIG_OFFCHANNEL */
3575                 wpas_p2p_remain_on_channel_cb(
3576                         wpa_s, data->remain_on_channel.freq,
3577                         data->remain_on_channel.duration);
3578                 break;
3579         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3580 #ifdef CONFIG_OFFCHANNEL
3581                 offchannel_cancel_remain_on_channel_cb(
3582                         wpa_s, data->remain_on_channel.freq);
3583 #endif /* CONFIG_OFFCHANNEL */
3584                 wpas_p2p_cancel_remain_on_channel_cb(
3585                         wpa_s, data->remain_on_channel.freq);
3586                 break;
3587         case EVENT_EAPOL_RX:
3588                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3589                                         data->eapol_rx.data,
3590                                         data->eapol_rx.data_len);
3591                 break;
3592         case EVENT_SIGNAL_CHANGE:
3593                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3594                         "above=%d signal=%d noise=%d txrate=%d",
3595                         data->signal_change.above_threshold,
3596                         data->signal_change.current_signal,
3597                         data->signal_change.current_noise,
3598                         data->signal_change.current_txrate);
3599                 wpa_bss_update_level(wpa_s->current_bss,
3600                                      data->signal_change.current_signal);
3601                 bgscan_notify_signal_change(
3602                         wpa_s, data->signal_change.above_threshold,
3603                         data->signal_change.current_signal,
3604                         data->signal_change.current_noise,
3605                         data->signal_change.current_txrate);
3606                 break;
3607         case EVENT_INTERFACE_ENABLED:
3608                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3609                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3610                         wpa_supplicant_update_mac_addr(wpa_s);
3611                         if (wpa_s->p2p_mgmt) {
3612                                 wpa_supplicant_set_state(wpa_s,
3613                                                          WPA_DISCONNECTED);
3614                                 break;
3615                         }
3616
3617 #ifdef CONFIG_AP
3618                         if (!wpa_s->ap_iface) {
3619                                 wpa_supplicant_set_state(wpa_s,
3620                                                          WPA_DISCONNECTED);
3621                                 wpa_s->scan_req = NORMAL_SCAN_REQ;
3622                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3623                         } else
3624                                 wpa_supplicant_set_state(wpa_s,
3625                                                          WPA_COMPLETED);
3626 #else /* CONFIG_AP */
3627                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3628                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3629 #endif /* CONFIG_AP */
3630                 }
3631                 break;
3632         case EVENT_INTERFACE_DISABLED:
3633                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3634 #ifdef CONFIG_P2P
3635                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3636                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3637                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3638                         /*
3639                          * Mark interface disabled if this happens to end up not
3640                          * being removed as a separate P2P group interface.
3641                          */
3642                         wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3643                         /*
3644                          * The interface was externally disabled. Remove
3645                          * it assuming an external entity will start a
3646                          * new session if needed.
3647                          */
3648                         if (wpa_s->current_ssid &&
3649                             wpa_s->current_ssid->p2p_group)
3650                                 wpas_p2p_interface_unavailable(wpa_s);
3651                         else
3652                                 wpas_p2p_disconnect(wpa_s);
3653                         /*
3654                          * wpa_s instance may have been freed, so must not use
3655                          * it here anymore.
3656                          */
3657                         break;
3658                 }
3659                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3660                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3661                         /* This radio work will be cancelled, so clear P2P
3662                          * state as well.
3663                          */
3664                         p2p_stop_find(wpa_s->global->p2p);
3665                 }
3666 #endif /* CONFIG_P2P */
3667
3668                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3669                         /*
3670                          * Indicate disconnection to keep ctrl_iface events
3671                          * consistent.
3672                          */
3673                         wpa_supplicant_event_disassoc(
3674                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3675                 }
3676                 wpa_supplicant_mark_disassoc(wpa_s);
3677                 radio_remove_works(wpa_s, NULL, 0);
3678
3679                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3680                 break;
3681         case EVENT_CHANNEL_LIST_CHANGED:
3682                 wpa_supplicant_update_channel_list(
3683                         wpa_s, &data->channel_list_changed);
3684                 break;
3685         case EVENT_INTERFACE_UNAVAILABLE:
3686                 wpas_p2p_interface_unavailable(wpa_s);
3687                 break;
3688         case EVENT_BEST_CHANNEL:
3689                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3690                         "(%d %d %d)",
3691                         data->best_chan.freq_24, data->best_chan.freq_5,
3692                         data->best_chan.freq_overall);
3693                 wpa_s->best_24_freq = data->best_chan.freq_24;
3694                 wpa_s->best_5_freq = data->best_chan.freq_5;
3695                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3696                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3697                                               data->best_chan.freq_5,
3698                                               data->best_chan.freq_overall);
3699                 break;
3700         case EVENT_UNPROT_DEAUTH:
3701                 wpa_supplicant_event_unprot_deauth(wpa_s,
3702                                                    &data->unprot_deauth);
3703                 break;
3704         case EVENT_UNPROT_DISASSOC:
3705                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3706                                                      &data->unprot_disassoc);
3707                 break;
3708         case EVENT_STATION_LOW_ACK:
3709 #ifdef CONFIG_AP
3710                 if (wpa_s->ap_iface && data)
3711                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3712                                                   data->low_ack.addr);
3713 #endif /* CONFIG_AP */
3714 #ifdef CONFIG_TDLS
3715                 if (data)
3716                         wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3717                                                           data->low_ack.addr);
3718 #endif /* CONFIG_TDLS */
3719                 break;
3720         case EVENT_IBSS_PEER_LOST:
3721 #ifdef CONFIG_IBSS_RSN
3722                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3723 #endif /* CONFIG_IBSS_RSN */
3724                 break;
3725         case EVENT_DRIVER_GTK_REKEY:
3726                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3727                               wpa_s->bssid, ETH_ALEN))
3728                         break;
3729                 if (!wpa_s->wpa)
3730                         break;
3731                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3732                                          data->driver_gtk_rekey.replay_ctr);
3733                 break;
3734         case EVENT_SCHED_SCAN_STOPPED:
3735                 wpa_s->pno = 0;
3736                 wpa_s->sched_scanning = 0;
3737                 resched = wpa_s->scanning;
3738                 wpa_supplicant_notify_scanning(wpa_s, 0);
3739
3740                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3741                         break;
3742
3743                 /*
3744                  * Start a new sched scan to continue searching for more SSIDs
3745                  * either if timed out or PNO schedule scan is pending.
3746                  */
3747                 if (wpa_s->sched_scan_timed_out) {
3748                         wpa_supplicant_req_sched_scan(wpa_s);
3749                 } else if (wpa_s->pno_sched_pending) {
3750                         wpa_s->pno_sched_pending = 0;
3751                         wpas_start_pno(wpa_s);
3752                 } else if (resched) {
3753                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3754                 }
3755
3756                 break;
3757         case EVENT_WPS_BUTTON_PUSHED:
3758 #ifdef CONFIG_WPS
3759                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3760 #endif /* CONFIG_WPS */
3761                 break;
3762         case EVENT_AVOID_FREQUENCIES:
3763                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3764                 break;
3765         case EVENT_CONNECT_FAILED_REASON:
3766 #ifdef CONFIG_AP
3767                 if (!wpa_s->ap_iface || !data)
3768                         break;
3769                 hostapd_event_connect_failed_reason(
3770                         wpa_s->ap_iface->bss[0],
3771                         data->connect_failed_reason.addr,
3772                         data->connect_failed_reason.code);
3773 #endif /* CONFIG_AP */
3774                 break;
3775         case EVENT_NEW_PEER_CANDIDATE:
3776 #ifdef CONFIG_MESH
3777                 if (!wpa_s->ifmsh || !data)
3778                         break;
3779                 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
3780                                      data->mesh_peer.ies,
3781                                      data->mesh_peer.ie_len);
3782 #endif /* CONFIG_MESH */
3783                 break;
3784         default:
3785                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3786                 break;
3787         }
3788 }