wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eapol_supp/eapol_supp_sm.h"
  13 #include "rsn_supp/wpa.h"
  14 #include "eloop.h"
  15 #include "config.h"
  16 #include "l2_packet/l2_packet.h"
  17 #include "wpa_supplicant_i.h"
  18 #include "driver_i.h"
  19 #include "pcsc_funcs.h"
  20 #include "rsn_supp/preauth.h"
  21 #include "rsn_supp/pmksa_cache.h"
  22 #include "common/wpa_ctrl.h"
  23 #include "eap_peer/eap.h"
  24 #include "ap/hostapd.h"
  25 #include "p2p/p2p.h"
  26 #include "wnm_sta.h"
  27 #include "notify.h"
  28 #include "common/ieee802_11_defs.h"
  29 #include "common/ieee802_11_common.h"
  30 #include "crypto/random.h"
  31 #include "blacklist.h"
  32 #include "wpas_glue.h"
  33 #include "wps_supplicant.h"
  34 #include "ibss_rsn.h"
  35 #include "sme.h"
  36 #include "gas_query.h"
  37 #include "p2p_supplicant.h"
  38 #include "bgscan.h"
  39 #include "autoscan.h"
  40 #include "ap.h"
  41 #include "bss.h"
  42 #include "scan.h"
  43 #include "offchannel.h"
  44 #include "interworking.h"
  45
  46
  47 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s);
  48
  49
  50 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  51                               struct wpa_ssid *ssid)
  52 {
  53         struct os_time now;
  54
  55         if (ssid == NULL || ssid->disabled_until.sec == 0)
  56                 return 0;
  57
  58         os_get_time(&now);
  59         if (ssid->disabled_until.sec > now.sec)
  60                 return ssid->disabled_until.sec - now.sec;
  61
  62         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  63
  64         return 0;
  65 }
  66
  67
  68 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  69 {
  70         struct wpa_ssid *ssid, *old_ssid;
  71         int res;
  72
  73         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  74                 return 0;
  75
  76         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  77                 "information");
  78         ssid = wpa_supplicant_get_ssid(wpa_s);
  79         if (ssid == NULL) {
  80                 wpa_msg(wpa_s, MSG_INFO,
  81                         "No network configuration found for the current AP");
  82                 return -1;
  83         }
  84
  85         if (wpas_network_disabled(wpa_s, ssid)) {
  86                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
  87                 return -1;
  88         }
  89
  90         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
  91             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
  92                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
  93                 return -1;
  94         }
  95
  96         res = wpas_temp_disabled(wpa_s, ssid);
  97         if (res > 0) {
  98                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
  99                         "disabled for %d second(s)", res);
 100                 return -1;
 101         }
 102
 103         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 104                 "current AP");
 105         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 106                 u8 wpa_ie[80];
 107                 size_t wpa_ie_len = sizeof(wpa_ie);
 108                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 109                                               wpa_ie, &wpa_ie_len) < 0)
 110                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 111         } else {
 112                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 113         }
 114
 115         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 116                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 117         old_ssid = wpa_s->current_ssid;
 118         wpa_s->current_ssid = ssid;
 119         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 120         wpa_supplicant_initiate_eapol(wpa_s);
 121         if (old_ssid != wpa_s->current_ssid)
 122                 wpas_notify_network_changed(wpa_s);
 123
 124         return 0;
 125 }
 126
 127
 128 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 129 {
 130         struct wpa_supplicant *wpa_s = eloop_ctx;
 131
 132         if (wpa_s->countermeasures) {
 133                 wpa_s->countermeasures = 0;
 134                 wpa_drv_set_countermeasures(wpa_s, 0);
 135                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 136                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 137         }
 138 }
 139
 140
 141 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 142 {
 143         int bssid_changed;
 144
 145         wnm_bss_keep_alive_deinit(wpa_s);
 146
 147 #ifdef CONFIG_IBSS_RSN
 148         ibss_rsn_deinit(wpa_s->ibss_rsn);
 149         wpa_s->ibss_rsn = NULL;
 150 #endif /* CONFIG_IBSS_RSN */
 151
 152 #ifdef CONFIG_AP
 153         wpa_supplicant_ap_deinit(wpa_s);
 154 #endif /* CONFIG_AP */
 155
 156         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 157                 return;
 158
 159         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 160         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 161         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 162         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 163 #ifdef CONFIG_SME
 164         wpa_s->sme.prev_bssid_set = 0;
 165 #endif /* CONFIG_SME */
 166 #ifdef CONFIG_P2P
 167         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 168 #endif /* CONFIG_P2P */
 169         wpa_s->current_bss = NULL;
 170         wpa_s->assoc_freq = 0;
 171 #ifdef CONFIG_IEEE80211R
 172 #ifdef CONFIG_SME
 173         if (wpa_s->sme.ft_ies)
 174                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 175 #endif /* CONFIG_SME */
 176 #endif /* CONFIG_IEEE80211R */
 177
 178         if (bssid_changed)
 179                 wpas_notify_bssid_changed(wpa_s);
 180
 181         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 182         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 183         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 184                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 185         wpa_s->ap_ies_from_associnfo = 0;
 186         wpa_s->current_ssid = NULL;
 187         wpa_s->key_mgmt = 0;
 188 }
 189
 190
 191 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 192 {
 193         struct wpa_ie_data ie;
 194         int pmksa_set = -1;
 195         size_t i;
 196
 197         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 198             ie.pmkid == NULL)
 199                 return;
 200
 201         for (i = 0; i < ie.num_pmkid; i++) {
 202                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 203                                                     ie.pmkid + i * PMKID_LEN,
 204                                                     NULL, NULL, 0);
 205                 if (pmksa_set == 0) {
 206                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 207                         break;
 208                 }
 209         }
 210
 211         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 212                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 213 }
 214
 215
 216 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 217                                                  union wpa_event_data *data)
 218 {
 219         if (data == NULL) {
 220                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 221                         "event");
 222                 return;
 223         }
 224         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 225                 " index=%d preauth=%d",
 226                 MAC2STR(data->pmkid_candidate.bssid),
 227                 data->pmkid_candidate.index,
 228                 data->pmkid_candidate.preauth);
 229
 230         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 231                             data->pmkid_candidate.index,
 232                             data->pmkid_candidate.preauth);
 233 }
 234
 235
 236 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 237 {
 238         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 239             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 240                 return 0;
 241
 242 #ifdef IEEE8021X_EAPOL
 243         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 244             wpa_s->current_ssid &&
 245             !(wpa_s->current_ssid->eapol_flags &
 246               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 247                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 248                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 249                  * plaintext or static WEP keys). */
 250                 return 0;
 251         }
 252 #endif /* IEEE8021X_EAPOL */
 253
 254         return 1;
 255 }
 256
 257
 258 /**
 259  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 260  * @wpa_s: pointer to wpa_supplicant data
 261  * @ssid: Configuration data for the network
 262  * Returns: 0 on success, -1 on failure
 263  *
 264  * This function is called when starting authentication with a network that is
 265  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 266  */
 267 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 268                               struct wpa_ssid *ssid)
 269 {
 270 #ifdef IEEE8021X_EAPOL
 271 #ifdef PCSC_FUNCS
 272         int aka = 0, sim = 0, type;
 273
 274         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 275                 return 0;
 276
 277         if (ssid->eap.eap_methods == NULL) {
 278                 sim = 1;
 279                 aka = 1;
 280         } else {
 281                 struct eap_method_type *eap = ssid->eap.eap_methods;
 282                 while (eap->vendor != EAP_VENDOR_IETF ||
 283                        eap->method != EAP_TYPE_NONE) {
 284                         if (eap->vendor == EAP_VENDOR_IETF) {
 285                                 if (eap->method == EAP_TYPE_SIM)
 286                                         sim = 1;
 287                                 else if (eap->method == EAP_TYPE_AKA ||
 288                                          eap->method == EAP_TYPE_AKA_PRIME)
 289                                         aka = 1;
 290                         }
 291                         eap++;
 292                 }
 293         }
 294
 295         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 296                 sim = 0;
 297         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 298             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 299             NULL)
 300                 aka = 0;
 301
 302         if (!sim && !aka) {
 303                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 304                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 305                         "enabled");
 306                 return 0;
 307         }
 308
 309         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 310                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 311         if (sim && aka)
 312                 type = SCARD_TRY_BOTH;
 313         else if (aka)
 314                 type = SCARD_USIM_ONLY;
 315         else
 316                 type = SCARD_GSM_SIM_ONLY;
 317
 318         wpa_s->scard = scard_init(type, NULL);
 319         if (wpa_s->scard == NULL) {
 320                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 321                         "(pcsc-lite)");
 322                 return -1;
 323         }
 324         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 325         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 326 #endif /* PCSC_FUNCS */
 327 #endif /* IEEE8021X_EAPOL */
 328
 329         return 0;
 330 }
 331
 332
 333 #ifndef CONFIG_NO_SCAN_PROCESSING
 334 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 335                                         struct wpa_ssid *ssid)
 336 {
 337         int i, privacy = 0;
 338
 339         if (ssid->mixed_cell)
 340                 return 1;
 341
 342 #ifdef CONFIG_WPS
 343         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 344                 return 1;
 345 #endif /* CONFIG_WPS */
 346
 347         for (i = 0; i < NUM_WEP_KEYS; i++) {
 348                 if (ssid->wep_key_len[i]) {
 349                         privacy = 1;
 350                         break;
 351                 }
 352         }
 353 #ifdef IEEE8021X_EAPOL
 354         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 355             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 356                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 357                 privacy = 1;
 358 #endif /* IEEE8021X_EAPOL */
 359
 360         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 361                 privacy = 1;
 362
 363         if (bss->caps & IEEE80211_CAP_PRIVACY)
 364                 return privacy;
 365         return !privacy;
 366 }
 367
 368
 369 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 370                                          struct wpa_ssid *ssid,
 371                                          struct wpa_bss *bss)
 372 {
 373         struct wpa_ie_data ie;
 374         int proto_match = 0;
 375         const u8 *rsn_ie, *wpa_ie;
 376         int ret;
 377         int wep_ok;
 378
 379         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 380         if (ret >= 0)
 381                 return ret;
 382
 383         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 384         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 385                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 386                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 387                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 388
 389         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 390         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 391                 proto_match++;
 392
 393                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 394                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 395                                 "failed");
 396                         break;
 397                 }
 398
 399                 if (wep_ok &&
 400                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 401                 {
 402                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 403                                 "in RSN IE");
 404                         return 1;
 405                 }
 406
 407                 if (!(ie.proto & ssid->proto)) {
 408                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 409                                 "mismatch");
 410                         break;
 411                 }
 412
 413                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 414                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 415                                 "cipher mismatch");
 416                         break;
 417                 }
 418
 419                 if (!(ie.group_cipher & ssid->group_cipher)) {
 420                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 421                                 "cipher mismatch");
 422                         break;
 423                 }
 424
 425                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 426                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 427                                 "mismatch");
 428                         break;
 429                 }
 430
 431 #ifdef CONFIG_IEEE80211W
 432                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 433                     (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
 434                      wpa_s->conf->pmf : ssid->ieee80211w) ==
 435                     MGMT_FRAME_PROTECTION_REQUIRED) {
 436                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 437                                 "frame protection");
 438                         break;
 439                 }
 440 #endif /* CONFIG_IEEE80211W */
 441
 442                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 443                 return 1;
 444         }
 445
 446         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 447         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 448                 proto_match++;
 449
 450                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 451                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 452                                 "failed");
 453                         break;
 454                 }
 455
 456                 if (wep_ok &&
 457                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 458                 {
 459                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 460                                 "in WPA IE");
 461                         return 1;
 462                 }
 463
 464                 if (!(ie.proto & ssid->proto)) {
 465                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 466                                 "mismatch");
 467                         break;
 468                 }
 469
 470                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 471                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 472                                 "cipher mismatch");
 473                         break;
 474                 }
 475
 476                 if (!(ie.group_cipher & ssid->group_cipher)) {
 477                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 478                                 "cipher mismatch");
 479                         break;
 480                 }
 481
 482                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 483                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 484                                 "mismatch");
 485                         break;
 486                 }
 487
 488                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 489                 return 1;
 490         }
 491
 492         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 493             !rsn_ie) {
 494                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 495                 return 1;
 496         }
 497
 498         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 499             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 500                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 501                 return 0;
 502         }
 503
 504         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 505                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 506                 return 1;
 507         }
 508
 509         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 510                 "WPA/WPA2");
 511
 512         return 0;
 513 }
 514
 515
 516 static int freq_allowed(int *freqs, int freq)
 517 {
 518         int i;
 519
 520         if (freqs == NULL)
 521                 return 1;
 522
 523         for (i = 0; freqs[i]; i++)
 524                 if (freqs[i] == freq)
 525                         return 1;
 526         return 0;
 527 }
 528
 529
 530 static int ht_supported(const struct hostapd_hw_modes *mode)
 531 {
 532         if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
 533                 /*
 534                  * The driver did not indicate whether it supports HT. Assume
 535                  * it does to avoid connection issues.
 536                  */
 537                 return 1;
 538         }
 539
 540         /*
 541          * IEEE Std 802.11n-2009 20.1.1:
 542          * An HT non-AP STA shall support all EQM rates for one spatial stream.
 543          */
 544         return mode->mcs_set[0] == 0xff;
 545 }
 546
 547
 548 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 549 {
 550         const struct hostapd_hw_modes *mode = NULL, *modes;
 551         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 552         const u8 *rate_ie;
 553         int i, j, k;
 554
 555         if (bss->freq == 0)
 556                 return 1; /* Cannot do matching without knowing band */
 557
 558         modes = wpa_s->hw.modes;
 559         if (modes == NULL) {
 560                 /*
 561                  * The driver does not provide any additional information
 562                  * about the utilized hardware, so allow the connection attempt
 563                  * to continue.
 564                  */
 565                 return 1;
 566         }
 567
 568         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 569                 for (j = 0; j < modes[i].num_channels; j++) {
 570                         int freq = modes[i].channels[j].freq;
 571                         if (freq == bss->freq) {
 572                                 if (mode &&
 573                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 574                                         break; /* do not allow 802.11b replace
 575                                                 * 802.11g */
 576                                 mode = &modes[i];
 577                                 break;
 578                         }
 579                 }
 580         }
 581
 582         if (mode == NULL)
 583                 return 0;
 584
 585         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 586                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 587                 if (rate_ie == NULL)
 588                         continue;
 589
 590                 for (j = 2; j < rate_ie[1] + 2; j++) {
 591                         int flagged = !!(rate_ie[j] & 0x80);
 592                         int r = (rate_ie[j] & 0x7f) * 5;
 593
 594                         /*
 595                          * IEEE Std 802.11n-2009 7.3.2.2:
 596                          * The new BSS Membership selector value is encoded
 597                          * like a legacy basic rate, but it is not a rate and
 598                          * only indicates if the BSS members are required to
 599                          * support the mandatory features of Clause 20 [HT PHY]
 600                          * in order to join the BSS.
 601                          */
 602                         if (flagged && ((rate_ie[j] & 0x7f) ==
 603                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 604                                 if (!ht_supported(mode)) {
 605                                         wpa_dbg(wpa_s, MSG_DEBUG,
 606                                                 "   hardware does not support "
 607                                                 "HT PHY");
 608                                         return 0;
 609                                 }
 610                                 continue;
 611                         }
 612
 613                         if (!flagged)
 614                                 continue;
 615
 616                         /* check for legacy basic rates */
 617                         for (k = 0; k < mode->num_rates; k++) {
 618                                 if (mode->rates[k] == r)
 619                                         break;
 620                         }
 621                         if (k == mode->num_rates) {
 622                                 /*
 623                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 624                                  * order to join a BSS all required rates
 625                                  * have to be supported by the hardware.
 626                                  */
 627                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 628                                         "not support required rate %d.%d Mbps",
 629                                         r / 10, r % 10);
 630                                 return 0;
 631                         }
 632                 }
 633         }
 634
 635         return 1;
 636 }
 637
 638
 639 static int bss_is_dmg(struct wpa_bss *bss)
 640 {
 641         return bss->freq > 45000;
 642 }
 643
 644
 645 /*
 646  * Test whether BSS is in an ESS.
 647  * This is done differently in DMG (60 GHz) and non-DMG bands
 648  */
 649 static int bss_is_ess(struct wpa_bss *bss)
 650 {
 651         if (bss_is_dmg(bss)) {
 652                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 653                         IEEE80211_CAP_DMG_AP;
 654         }
 655
 656         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 657                 IEEE80211_CAP_ESS);
 658 }
 659
 660
 661 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 662                                             int i, struct wpa_bss *bss,
 663                                             struct wpa_ssid *group)
 664 {
 665         u8 wpa_ie_len, rsn_ie_len;
 666         int wpa;
 667         struct wpa_blacklist *e;
 668         const u8 *ie;
 669         struct wpa_ssid *ssid;
 670
 671         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 672         wpa_ie_len = ie ? ie[1] : 0;
 673
 674         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 675         rsn_ie_len = ie ? ie[1] : 0;
 676
 677         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 678                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
 679                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 680                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 681                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
 682
 683         e = wpa_blacklist_get(wpa_s, bss->bssid);
 684         if (e) {
 685                 int limit = 1;
 686                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 687                         /*
 688                          * When only a single network is enabled, we can
 689                          * trigger blacklisting on the first failure. This
 690                          * should not be done with multiple enabled networks to
 691                          * avoid getting forced to move into a worse ESS on
 692                          * single error if there are no other BSSes of the
 693                          * current ESS.
 694                          */
 695                         limit = 0;
 696                 }
 697                 if (e->count > limit) {
 698                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 699                                 "(count=%d limit=%d)", e->count, limit);
 700                         return NULL;
 701                 }
 702         }
 703
 704         if (bss->ssid_len == 0) {
 705                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 706                 return NULL;
 707         }
 708
 709         if (disallowed_bssid(wpa_s, bss->bssid)) {
 710                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 711                 return NULL;
 712         }
 713
 714         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 715                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 716                 return NULL;
 717         }
 718
 719         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 720
 721         for (ssid = group; ssid; ssid = ssid->pnext) {
 722                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 723                 int res;
 724
 725                 if (wpas_network_disabled(wpa_s, ssid)) {
 726                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 727                         continue;
 728                 }
 729
 730                 res = wpas_temp_disabled(wpa_s, ssid);
 731                 if (res > 0) {
 732                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 733                                 "temporarily for %d second(s)", res);
 734                         continue;
 735                 }
 736
 737 #ifdef CONFIG_WPS
 738                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 739                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 740                                 "(WPS)");
 741                         continue;
 742                 }
 743
 744                 if (wpa && ssid->ssid_len == 0 &&
 745                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 746                         check_ssid = 0;
 747
 748                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 749                         /* Only allow wildcard SSID match if an AP
 750                          * advertises active WPS operation that matches
 751                          * with our mode. */
 752                         check_ssid = 1;
 753                         if (ssid->ssid_len == 0 &&
 754                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 755                                 check_ssid = 0;
 756                 }
 757 #endif /* CONFIG_WPS */
 758
 759                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 760                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 761                         check_ssid = 0;
 762
 763                 if (check_ssid &&
 764                     (bss->ssid_len != ssid->ssid_len ||
 765                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 766                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 767                         continue;
 768                 }
 769
 770                 if (ssid->bssid_set &&
 771                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 772                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 773                         continue;
 774                 }
 775
 776                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 777                         continue;
 778
 779                 if (!wpa &&
 780                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 781                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 782                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 783                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 784                                 "not allowed");
 785                         continue;
 786                 }
 787
 788                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 789                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 790                                 "mismatch");
 791                         continue;
 792                 }
 793
 794                 if (!bss_is_ess(bss)) {
 795                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 796                         continue;
 797                 }
 798
 799                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 800                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 801                                 "allowed");
 802                         continue;
 803                 }
 804
 805                 if (!rate_match(wpa_s, bss)) {
 806                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 807                                 "not match");
 808                         continue;
 809                 }
 810
 811 #ifdef CONFIG_P2P
 812                 /*
 813                  * TODO: skip the AP if its P2P IE has Group Formation
 814                  * bit set in the P2P Group Capability Bitmap and we
 815                  * are not in Group Formation with that device.
 816                  */
 817 #endif /* CONFIG_P2P */
 818
 819                 /* Matching configuration found */
 820                 return ssid;
 821         }
 822
 823         /* No matching configuration found */
 824         return NULL;
 825 }
 826
 827
 828 static struct wpa_bss *
 829 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 830                           struct wpa_ssid *group,
 831                           struct wpa_ssid **selected_ssid)
 832 {
 833         unsigned int i;
 834
 835         wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 836                 group->priority);
 837
 838         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 839                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 840                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
 841                 if (!*selected_ssid)
 842                         continue;
 843                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 844                         " ssid='%s'",
 845                         MAC2STR(bss->bssid),
 846                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
 847                 return bss;
 848         }
 849
 850         return NULL;
 851 }
 852
 853
 854 static struct wpa_bss *
 855 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 856                             struct wpa_ssid **selected_ssid)
 857 {
 858         struct wpa_bss *selected = NULL;
 859         int prio;
 860
 861         if (wpa_s->last_scan_res == NULL ||
 862             wpa_s->last_scan_res_used == 0)
 863                 return NULL; /* no scan results from last update */
 864
 865         while (selected == NULL) {
 866                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 867                         selected = wpa_supplicant_select_bss(
 868                                 wpa_s, wpa_s->conf->pssid[prio],
 869                                 selected_ssid);
 870                         if (selected)
 871                                 break;
 872                 }
 873
 874                 if (selected == NULL && wpa_s->blacklist &&
 875                     !wpa_s->countermeasures) {
 876                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
 877                                 "blacklist and try again");
 878                         wpa_blacklist_clear(wpa_s);
 879                         wpa_s->blacklist_cleared++;
 880                 } else if (selected == NULL)
 881                         break;
 882         }
 883
 884         return selected;
 885 }
 886
 887
 888 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 889                                         int timeout_sec, int timeout_usec)
 890 {
 891         if (!wpa_supplicant_enabled_networks(wpa_s)) {
 892                 /*
 893                  * No networks are enabled; short-circuit request so
 894                  * we don't wait timeout seconds before transitioning
 895                  * to INACTIVE state.
 896                  */
 897                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
 898                         "since there are no enabled networks");
 899                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 900 #ifdef CONFIG_P2P
 901                 wpa_s->sta_scan_pending = 0;
 902 #endif /* CONFIG_P2P */
 903                 return;
 904         }
 905
 906         wpa_s->scan_for_connection = 1;
 907         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 908 }
 909
 910
 911 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 912                            struct wpa_bss *selected,
 913                            struct wpa_ssid *ssid)
 914 {
 915         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 916                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 917                         "PBC session overlap");
 918 #ifdef CONFIG_P2P
 919                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
 920                         return -1;
 921 #endif /* CONFIG_P2P */
 922
 923 #ifdef CONFIG_WPS
 924                 wpas_wps_cancel(wpa_s);
 925 #endif /* CONFIG_WPS */
 926                 return -1;
 927         }
 928
 929         /*
 930          * Do not trigger new association unless the BSSID has changed or if
 931          * reassociation is requested. If we are in process of associating with
 932          * the selected BSSID, do not trigger new attempt.
 933          */
 934         if (wpa_s->reassociate ||
 935             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 936              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
 937                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
 938               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 939               0))) {
 940                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 941                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 942                         return 0;
 943                 }
 944                 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
 945                         "reassociate: %d  selected: "MACSTR "  bssid: " MACSTR
 946                         "  pending: " MACSTR "  wpa_state: %s",
 947                         wpa_s->reassociate, MAC2STR(selected->bssid),
 948                         MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
 949                         wpa_supplicant_state_txt(wpa_s->wpa_state));
 950                 wpa_supplicant_associate(wpa_s, selected, ssid);
 951         } else {
 952                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
 953                         "selected AP");
 954         }
 955
 956         return 0;
 957 }
 958
 959
 960 static struct wpa_ssid *
 961 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 962 {
 963         int prio;
 964         struct wpa_ssid *ssid;
 965
 966         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 967                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 968                 {
 969                         if (wpas_network_disabled(wpa_s, ssid))
 970                                 continue;
 971                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 972                             ssid->mode == IEEE80211_MODE_AP)
 973                                 return ssid;
 974                 }
 975         }
 976         return NULL;
 977 }
 978
 979
 980 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 981  * on BSS added and BSS changed events */
 982 static void wpa_supplicant_rsn_preauth_scan_results(
 983         struct wpa_supplicant *wpa_s)
 984 {
 985         struct wpa_bss *bss;
 986
 987         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 988                 return;
 989
 990         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 991                 const u8 *ssid, *rsn;
 992
 993                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
 994                 if (ssid == NULL)
 995                         continue;
 996
 997                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 998                 if (rsn == NULL)
 999                         continue;
1000
1001                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1002         }
1003
1004 }
1005
1006
1007 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1008                                        struct wpa_bss *selected,
1009                                        struct wpa_ssid *ssid)
1010 {
1011         struct wpa_bss *current_bss = NULL;
1012         int min_diff;
1013
1014         if (wpa_s->reassociate)
1015                 return 1; /* explicit request to reassociate */
1016         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1017                 return 1; /* we are not associated; continue */
1018         if (wpa_s->current_ssid == NULL)
1019                 return 1; /* unknown current SSID */
1020         if (wpa_s->current_ssid != ssid)
1021                 return 1; /* different network block */
1022
1023         if (wpas_driver_bss_selection(wpa_s))
1024                 return 0; /* Driver-based roaming */
1025
1026         if (wpa_s->current_ssid->ssid)
1027                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1028                                           wpa_s->current_ssid->ssid,
1029                                           wpa_s->current_ssid->ssid_len);
1030         if (!current_bss)
1031                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1032
1033         if (!current_bss)
1034                 return 1; /* current BSS not seen in scan results */
1035
1036         if (current_bss == selected)
1037                 return 0;
1038
1039         if (selected->last_update_idx > current_bss->last_update_idx)
1040                 return 1; /* current BSS not seen in the last scan */
1041
1042 #ifndef CONFIG_NO_ROAMING
1043         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1044         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1045                 MAC2STR(current_bss->bssid), current_bss->level);
1046         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1047                 MAC2STR(selected->bssid), selected->level);
1048
1049         if (wpa_s->current_ssid->bssid_set &&
1050             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1051             0) {
1052                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1053                         "has preferred BSSID");
1054                 return 1;
1055         }
1056
1057         if (current_bss->level < 0 && current_bss->level > selected->level) {
1058                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1059                         "signal level");
1060                 return 0;
1061         }
1062
1063         min_diff = 2;
1064         if (current_bss->level < 0) {
1065                 if (current_bss->level < -85)
1066                         min_diff = 1;
1067                 else if (current_bss->level < -80)
1068                         min_diff = 2;
1069                 else if (current_bss->level < -75)
1070                         min_diff = 3;
1071                 else if (current_bss->level < -70)
1072                         min_diff = 4;
1073                 else
1074                         min_diff = 5;
1075         }
1076         if (abs(current_bss->level - selected->level) < min_diff) {
1077                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1078                         "in signal level");
1079                 return 0;
1080         }
1081
1082         return 1;
1083 #else /* CONFIG_NO_ROAMING */
1084         return 0;
1085 #endif /* CONFIG_NO_ROAMING */
1086 }
1087
1088
1089 /* Return != 0 if no scan results could be fetched or if scan results should not
1090  * be shared with other virtual interfaces. */
1091 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1092                                               union wpa_event_data *data)
1093 {
1094         struct wpa_scan_results *scan_res;
1095         int ap = 0;
1096 #ifndef CONFIG_NO_RANDOM_POOL
1097         size_t i, num;
1098 #endif /* CONFIG_NO_RANDOM_POOL */
1099
1100 #ifdef CONFIG_AP
1101         if (wpa_s->ap_iface)
1102                 ap = 1;
1103 #endif /* CONFIG_AP */
1104
1105         wpa_supplicant_notify_scanning(wpa_s, 0);
1106
1107 #ifdef CONFIG_P2P
1108         if (wpa_s->global->p2p_cb_on_scan_complete &&
1109             !wpa_s->global->p2p_disabled &&
1110             wpa_s->global->p2p != NULL && !wpa_s->sta_scan_pending &&
1111             !wpa_s->scan_res_handler) {
1112                 wpa_s->global->p2p_cb_on_scan_complete = 0;
1113                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
1114                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
1115                                 "stopped scan processing");
1116                         wpa_s->sta_scan_pending = 1;
1117                         wpa_supplicant_req_scan(wpa_s, 5, 0);
1118                         return -1;
1119                 }
1120         }
1121         wpa_s->sta_scan_pending = 0;
1122 #endif /* CONFIG_P2P */
1123
1124         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1125                                                    data ? &data->scan_info :
1126                                                    NULL, 1);
1127         if (scan_res == NULL) {
1128                 if (wpa_s->conf->ap_scan == 2 || ap)
1129                         return -1;
1130                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1131                         "scanning again");
1132                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1133                 return -1;
1134         }
1135
1136 #ifndef CONFIG_NO_RANDOM_POOL
1137         num = scan_res->num;
1138         if (num > 10)
1139                 num = 10;
1140         for (i = 0; i < num; i++) {
1141                 u8 buf[5];
1142                 struct wpa_scan_res *res = scan_res->res[i];
1143                 buf[0] = res->bssid[5];
1144                 buf[1] = res->qual & 0xff;
1145                 buf[2] = res->noise & 0xff;
1146                 buf[3] = res->level & 0xff;
1147                 buf[4] = res->tsf & 0xff;
1148                 random_add_randomness(buf, sizeof(buf));
1149         }
1150 #endif /* CONFIG_NO_RANDOM_POOL */
1151
1152         if (wpa_s->scan_res_handler) {
1153                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1154                                          struct wpa_scan_results *scan_res);
1155
1156                 scan_res_handler = wpa_s->scan_res_handler;
1157                 wpa_s->scan_res_handler = NULL;
1158                 scan_res_handler(wpa_s, scan_res);
1159
1160                 wpa_scan_results_free(scan_res);
1161                 return -2;
1162         }
1163
1164         if (ap) {
1165                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1166 #ifdef CONFIG_AP
1167                 if (wpa_s->ap_iface->scan_cb)
1168                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1169 #endif /* CONFIG_AP */
1170                 wpa_scan_results_free(scan_res);
1171                 return 0;
1172         }
1173
1174         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
1175         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1176         wpas_notify_scan_results(wpa_s);
1177
1178         wpas_notify_scan_done(wpa_s, 1);
1179
1180         if (sme_proc_obss_scan(wpa_s) > 0) {
1181                 wpa_scan_results_free(scan_res);
1182                 return 0;
1183         }
1184
1185         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
1186                 wpa_scan_results_free(scan_res);
1187                 return 0;
1188         }
1189
1190         if (autoscan_notify_scan(wpa_s, scan_res)) {
1191                 wpa_scan_results_free(scan_res);
1192                 return 0;
1193         }
1194
1195         if (wpa_s->disconnected) {
1196                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1197                 wpa_scan_results_free(scan_res);
1198                 return 0;
1199         }
1200
1201         if (!wpas_driver_bss_selection(wpa_s) &&
1202             bgscan_notify_scan(wpa_s, scan_res) == 1) {
1203                 wpa_scan_results_free(scan_res);
1204                 return 0;
1205         }
1206
1207         wpas_wps_update_ap_info(wpa_s, scan_res);
1208
1209         wpa_scan_results_free(scan_res);
1210
1211         return wpas_select_network_from_last_scan(wpa_s);
1212 }
1213
1214
1215 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s)
1216 {
1217         struct wpa_bss *selected;
1218         struct wpa_ssid *ssid = NULL;
1219
1220         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1221
1222         if (selected) {
1223                 int skip;
1224                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1225                 if (skip) {
1226                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1227                         return 0;
1228                 }
1229
1230                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1231                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1232                         return -1;
1233                 }
1234                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1235                 /*
1236                  * Do not notify other virtual radios of scan results since we do not
1237                  * want them to start other associations at the same time.
1238                  */
1239                 return 1;
1240         } else {
1241                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1242                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1243                 if (ssid) {
1244                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1245                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1246                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1247                 } else {
1248                         int timeout_sec = wpa_s->scan_interval;
1249                         int timeout_usec = 0;
1250 #ifdef CONFIG_P2P
1251                         if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1252                                 return 0;
1253
1254                         if (wpa_s->p2p_in_provisioning) {
1255                                 /*
1256                                  * Use shorter wait during P2P Provisioning
1257                                  * state to speed up group formation.
1258                                  */
1259                                 timeout_sec = 0;
1260                                 timeout_usec = 250000;
1261                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1262                                                             timeout_usec);
1263                                 return 0;
1264                         }
1265 #endif /* CONFIG_P2P */
1266 #ifdef CONFIG_INTERWORKING
1267                         if (wpa_s->conf->auto_interworking &&
1268                             wpa_s->conf->interworking &&
1269                             wpa_s->conf->cred) {
1270                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1271                                         "start ANQP fetch since no matching "
1272                                         "networks found");
1273                                 wpa_s->network_select = 1;
1274                                 wpa_s->auto_network_select = 1;
1275                                 interworking_start_fetch_anqp(wpa_s);
1276                                 return 1;
1277                         }
1278 #endif /* CONFIG_INTERWORKING */
1279                         if (wpa_supplicant_req_sched_scan(wpa_s))
1280                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1281                                                             timeout_usec);
1282                 }
1283         }
1284         return 0;
1285 }
1286
1287
1288 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1289                                               union wpa_event_data *data)
1290 {
1291         const char *rn, *rn2;
1292         struct wpa_supplicant *ifs;
1293
1294         if (_wpa_supplicant_event_scan_results(wpa_s, data) != 0) {
1295                 /*
1296                  * If no scan results could be fetched, then no need to
1297                  * notify those interfaces that did not actually request
1298                  * this scan. Similarly, if scan results started a new operation on this
1299                  * interface, do not notify other interfaces to avoid concurrent
1300                  * operations during a connection attempt.
1301                  */
1302                 return;
1303         }
1304
1305         /*
1306          * Check other interfaces to see if they have the same radio-name. If
1307          * so, they get updated with this same scan info.
1308          */
1309         if (!wpa_s->driver->get_radio_name)
1310                 return;
1311
1312         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1313         if (rn == NULL || rn[0] == '\0')
1314                 return;
1315
1316         wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1317                 "sharing same radio (%s) in event_scan_results", rn);
1318
1319         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1320                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1321                         continue;
1322
1323                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1324                 if (rn2 && os_strcmp(rn, rn2) == 0) {
1325                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1326                                    "sibling", ifs->ifname);
1327                         _wpa_supplicant_event_scan_results(ifs, data);
1328                 }
1329         }
1330 }
1331
1332 #endif /* CONFIG_NO_SCAN_PROCESSING */
1333
1334
1335 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1336 {
1337 #ifdef CONFIG_NO_SCAN_PROCESSING
1338         return -1;
1339 #else /* CONFIG_NO_SCAN_PROCESSING */
1340         struct os_time now;
1341
1342         if (wpa_s->last_scan_res_used <= 0)
1343                 return -1;
1344
1345         os_get_time(&now);
1346         if (now.sec - wpa_s->last_scan.sec > 5) {
1347                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1348                 return -1;
1349         }
1350
1351         return wpas_select_network_from_last_scan(wpa_s);
1352 #endif /* CONFIG_NO_SCAN_PROCESSING */
1353 }
1354
1355 #ifdef CONFIG_WNM
1356
1357 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1358 {
1359         struct wpa_supplicant *wpa_s = eloop_ctx;
1360
1361         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1362                 return;
1363
1364         if (!wpa_s->no_keep_alive) {
1365                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1366                            MAC2STR(wpa_s->bssid));
1367                 /* TODO: could skip this if normal data traffic has been sent */
1368                 /* TODO: Consider using some more appropriate data frame for
1369                  * this */
1370                 if (wpa_s->l2)
1371                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1372                                        (u8 *) "", 0);
1373         }
1374
1375 #ifdef CONFIG_SME
1376         if (wpa_s->sme.bss_max_idle_period) {
1377                 unsigned int msec;
1378                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1379                 if (msec > 100)
1380                         msec -= 100;
1381                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1382                                        wnm_bss_keep_alive, wpa_s, NULL);
1383         }
1384 #endif /* CONFIG_SME */
1385 }
1386
1387
1388 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1389                                    const u8 *ies, size_t ies_len)
1390 {
1391         struct ieee802_11_elems elems;
1392
1393         if (ies == NULL)
1394                 return;
1395
1396         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1397                 return;
1398
1399 #ifdef CONFIG_SME
1400         if (elems.bss_max_idle_period) {
1401                 unsigned int msec;
1402                 wpa_s->sme.bss_max_idle_period =
1403                         WPA_GET_LE16(elems.bss_max_idle_period);
1404                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1405                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1406                            (elems.bss_max_idle_period[2] & 0x01) ?
1407                            " (protected keep-live required)" : "");
1408                 if (wpa_s->sme.bss_max_idle_period == 0)
1409                         wpa_s->sme.bss_max_idle_period = 1;
1410                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1411                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1412                          /* msec times 1000 */
1413                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1414                         if (msec > 100)
1415                                 msec -= 100;
1416                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1417                                                wnm_bss_keep_alive, wpa_s,
1418                                                NULL);
1419                 }
1420         }
1421 #endif /* CONFIG_SME */
1422 }
1423
1424 #endif /* CONFIG_WNM */
1425
1426
1427 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1428 {
1429 #ifdef CONFIG_WNM
1430         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1431 #endif /* CONFIG_WNM */
1432 }
1433
1434
1435 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1436                                           union wpa_event_data *data)
1437 {
1438         int l, len, found = 0, wpa_found, rsn_found;
1439         const u8 *p;
1440
1441         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1442         if (data->assoc_info.req_ies)
1443                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1444                             data->assoc_info.req_ies_len);
1445         if (data->assoc_info.resp_ies) {
1446                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1447                             data->assoc_info.resp_ies_len);
1448 #ifdef CONFIG_TDLS
1449                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1450                                         data->assoc_info.resp_ies_len);
1451 #endif /* CONFIG_TDLS */
1452 #ifdef CONFIG_WNM
1453                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1454                                        data->assoc_info.resp_ies_len);
1455 #endif /* CONFIG_WNM */
1456         }
1457         if (data->assoc_info.beacon_ies)
1458                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1459                             data->assoc_info.beacon_ies,
1460                             data->assoc_info.beacon_ies_len);
1461         if (data->assoc_info.freq)
1462                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1463                         data->assoc_info.freq);
1464
1465         p = data->assoc_info.req_ies;
1466         l = data->assoc_info.req_ies_len;
1467
1468         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1469         while (p && l >= 2) {
1470                 len = p[1] + 2;
1471                 if (len > l) {
1472                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1473                                     p, l);
1474                         break;
1475                 }
1476                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1477                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1478                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1479                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1480                                 break;
1481                         found = 1;
1482                         wpa_find_assoc_pmkid(wpa_s);
1483                         break;
1484                 }
1485                 l -= len;
1486                 p += len;
1487         }
1488         if (!found && data->assoc_info.req_ies)
1489                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1490
1491 #ifdef CONFIG_IEEE80211R
1492 #ifdef CONFIG_SME
1493         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1494                 u8 bssid[ETH_ALEN];
1495                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1496                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1497                                                  data->assoc_info.resp_ies,
1498                                                  data->assoc_info.resp_ies_len,
1499                                                  bssid) < 0) {
1500                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1501                                 "Reassociation Response failed");
1502                         wpa_supplicant_deauthenticate(
1503                                 wpa_s, WLAN_REASON_INVALID_IE);
1504                         return -1;
1505                 }
1506         }
1507
1508         p = data->assoc_info.resp_ies;
1509         l = data->assoc_info.resp_ies_len;
1510
1511 #ifdef CONFIG_WPS_STRICT
1512         if (p && wpa_s->current_ssid &&
1513             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1514                 struct wpabuf *wps;
1515                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1516                 if (wps == NULL) {
1517                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1518                                 "include WPS IE in (Re)Association Response");
1519                         return -1;
1520                 }
1521
1522                 if (wps_validate_assoc_resp(wps) < 0) {
1523                         wpabuf_free(wps);
1524                         wpa_supplicant_deauthenticate(
1525                                 wpa_s, WLAN_REASON_INVALID_IE);
1526                         return -1;
1527                 }
1528                 wpabuf_free(wps);
1529         }
1530 #endif /* CONFIG_WPS_STRICT */
1531
1532         /* Go through the IEs and make a copy of the MDIE, if present. */
1533         while (p && l >= 2) {
1534                 len = p[1] + 2;
1535                 if (len > l) {
1536                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1537                                     p, l);
1538                         break;
1539                 }
1540                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1541                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1542                         wpa_s->sme.ft_used = 1;
1543                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1544                                   MOBILITY_DOMAIN_ID_LEN);
1545                         break;
1546                 }
1547                 l -= len;
1548                 p += len;
1549         }
1550 #endif /* CONFIG_SME */
1551
1552         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1553                              data->assoc_info.resp_ies_len);
1554 #endif /* CONFIG_IEEE80211R */
1555
1556         /* WPA/RSN IE from Beacon/ProbeResp */
1557         p = data->assoc_info.beacon_ies;
1558         l = data->assoc_info.beacon_ies_len;
1559
1560         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1561          */
1562         wpa_found = rsn_found = 0;
1563         while (p && l >= 2) {
1564                 len = p[1] + 2;
1565                 if (len > l) {
1566                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1567                                     p, l);
1568                         break;
1569                 }
1570                 if (!wpa_found &&
1571                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1572                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1573                         wpa_found = 1;
1574                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1575                 }
1576
1577                 if (!rsn_found &&
1578                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1579                         rsn_found = 1;
1580                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1581                 }
1582
1583                 l -= len;
1584                 p += len;
1585         }
1586
1587         if (!wpa_found && data->assoc_info.beacon_ies)
1588                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1589         if (!rsn_found && data->assoc_info.beacon_ies)
1590                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1591         if (wpa_found || rsn_found)
1592                 wpa_s->ap_ies_from_associnfo = 1;
1593
1594         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1595             wpa_s->assoc_freq != data->assoc_info.freq) {
1596                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1597                            "%u to %u MHz",
1598                            wpa_s->assoc_freq, data->assoc_info.freq);
1599                 wpa_supplicant_update_scan_results(wpa_s);
1600         }
1601
1602         wpa_s->assoc_freq = data->assoc_info.freq;
1603
1604         return 0;
1605 }
1606
1607
1608 static struct wpa_bss * wpa_supplicant_get_new_bss(
1609         struct wpa_supplicant *wpa_s, const u8 *bssid)
1610 {
1611         struct wpa_bss *bss = NULL;
1612         struct wpa_ssid *ssid = wpa_s->current_ssid;
1613
1614         if (ssid->ssid_len > 0)
1615                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
1616         if (!bss)
1617                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1618
1619         return bss;
1620 }
1621
1622
1623 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1624 {
1625         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1626
1627         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1628                 return -1;
1629
1630         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1631                 return 0;
1632
1633         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1634                                         WPA_IE_VENDOR_TYPE);
1635         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1636
1637         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1638                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1639             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1640                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1641                 return -1;
1642
1643         return 0;
1644 }
1645
1646
1647 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1648                                        union wpa_event_data *data)
1649 {
1650         u8 bssid[ETH_ALEN];
1651         int ft_completed;
1652         struct wpa_driver_capa capa;
1653
1654 #ifdef CONFIG_AP
1655         if (wpa_s->ap_iface) {
1656                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1657                                     data->assoc_info.addr,
1658                                     data->assoc_info.req_ies,
1659                                     data->assoc_info.req_ies_len,
1660                                     data->assoc_info.reassoc);
1661                 return;
1662         }
1663 #endif /* CONFIG_AP */
1664
1665         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1666         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1667                 return;
1668
1669         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1670                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1671                 wpa_supplicant_deauthenticate(
1672                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1673                 return;
1674         }
1675
1676         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1677         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1678                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1679                         MACSTR, MAC2STR(bssid));
1680                 random_add_randomness(bssid, ETH_ALEN);
1681                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1682                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1683                 wpas_notify_bssid_changed(wpa_s);
1684
1685                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1686                         wpa_clear_keys(wpa_s, bssid);
1687                 }
1688                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1689                         wpa_supplicant_deauthenticate(
1690                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1691                         return;
1692                 }
1693                 if (wpa_s->current_ssid) {
1694                         struct wpa_bss *bss = NULL;
1695
1696                         bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1697                         if (!bss) {
1698                                 wpa_supplicant_update_scan_results(wpa_s);
1699
1700                                 /* Get the BSS from the new scan results */
1701                                 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1702                         }
1703
1704                         if (bss)
1705                                 wpa_s->current_bss = bss;
1706                 }
1707
1708                 if (wpa_s->conf->ap_scan == 1 &&
1709                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1710                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1711                                 wpa_msg(wpa_s, MSG_WARNING,
1712                                         "WPA/RSN IEs not updated");
1713                 }
1714         }
1715
1716 #ifdef CONFIG_SME
1717         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1718         wpa_s->sme.prev_bssid_set = 1;
1719 #endif /* CONFIG_SME */
1720
1721         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1722         if (wpa_s->current_ssid) {
1723                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1724                  * initialized before association, but for other modes,
1725                  * initialize PC/SC here, if the current configuration needs
1726                  * smartcard or SIM/USIM. */
1727                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1728         }
1729         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1730         if (wpa_s->l2)
1731                 l2_packet_notify_auth_start(wpa_s->l2);
1732
1733         /*
1734          * Set portEnabled first to FALSE in order to get EAP state machine out
1735          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1736          * state machine may transit to AUTHENTICATING state based on obsolete
1737          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1738          * AUTHENTICATED without ever giving chance to EAP state machine to
1739          * reset the state.
1740          */
1741         if (!ft_completed) {
1742                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1743                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1744         }
1745         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1746                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1747         /* 802.1X::portControl = Auto */
1748         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1749         wpa_s->eapol_received = 0;
1750         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1751             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1752             (wpa_s->current_ssid &&
1753              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1754                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1755                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1756         } else if (!ft_completed) {
1757                 /* Timeout for receiving the first EAPOL packet */
1758                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1759         }
1760         wpa_supplicant_cancel_scan(wpa_s);
1761
1762         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1763             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1764                 /*
1765                  * We are done; the driver will take care of RSN 4-way
1766                  * handshake.
1767                  */
1768                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1769                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1770                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1771                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1772         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1773                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1774                 /*
1775                  * The driver will take care of RSN 4-way handshake, so we need
1776                  * to allow EAPOL supplicant to complete its work without
1777                  * waiting for WPA supplicant.
1778                  */
1779                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1780         } else if (ft_completed) {
1781                 /*
1782                  * FT protocol completed - make sure EAPOL state machine ends
1783                  * up in authenticated.
1784                  */
1785                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1786                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1787                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1788                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1789         }
1790
1791         wpa_s->last_eapol_matches_bssid = 0;
1792
1793         if (wpa_s->pending_eapol_rx) {
1794                 struct os_time now, age;
1795                 os_get_time(&now);
1796                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1797                 if (age.sec == 0 && age.usec < 100000 &&
1798                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1799                     0) {
1800                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1801                                 "frame that was received just before "
1802                                 "association notification");
1803                         wpa_supplicant_rx_eapol(
1804                                 wpa_s, wpa_s->pending_eapol_rx_src,
1805                                 wpabuf_head(wpa_s->pending_eapol_rx),
1806                                 wpabuf_len(wpa_s->pending_eapol_rx));
1807                 }
1808                 wpabuf_free(wpa_s->pending_eapol_rx);
1809                 wpa_s->pending_eapol_rx = NULL;
1810         }
1811
1812         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1813              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1814             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1815             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1816                 /* Set static WEP keys again */
1817                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1818         }
1819
1820 #ifdef CONFIG_IBSS_RSN
1821         if (wpa_s->current_ssid &&
1822             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1823             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1824             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1825             wpa_s->ibss_rsn == NULL) {
1826                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1827                 if (!wpa_s->ibss_rsn) {
1828                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1829                         wpa_supplicant_deauthenticate(
1830                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1831                         return;
1832                 }
1833
1834                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1835         }
1836 #endif /* CONFIG_IBSS_RSN */
1837
1838         wpas_wps_notify_assoc(wpa_s, bssid);
1839 }
1840
1841
1842 static int disconnect_reason_recoverable(u16 reason_code)
1843 {
1844         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
1845                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
1846                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
1847 }
1848
1849
1850 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1851                                           u16 reason_code,
1852                                           int locally_generated)
1853 {
1854         const u8 *bssid;
1855
1856         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1857                 /*
1858                  * At least Host AP driver and a Prism3 card seemed to be
1859                  * generating streams of disconnected events when configuring
1860                  * IBSS for WPA-None. Ignore them for now.
1861                  */
1862                 return;
1863         }
1864
1865         bssid = wpa_s->bssid;
1866         if (is_zero_ether_addr(bssid))
1867                 bssid = wpa_s->pending_bssid;
1868
1869         if (!is_zero_ether_addr(bssid) ||
1870             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1871                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1872                         " reason=%d%s",
1873                         MAC2STR(bssid), reason_code,
1874                         locally_generated ? " locally_generated=1" : "");
1875         }
1876 }
1877
1878
1879 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
1880                                  int locally_generated)
1881 {
1882         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
1883             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
1884                 return 0; /* Not in 4-way handshake with PSK */
1885
1886         /*
1887          * It looks like connection was lost while trying to go through PSK
1888          * 4-way handshake. Filter out known disconnection cases that are caused
1889          * by something else than PSK mismatch to avoid confusing reports.
1890          */
1891
1892         if (locally_generated) {
1893                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
1894                         return 0;
1895         }
1896
1897         return 1;
1898 }
1899
1900
1901 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
1902                                                  u16 reason_code,
1903                                                  int locally_generated)
1904 {
1905         const u8 *bssid;
1906         int authenticating;
1907         u8 prev_pending_bssid[ETH_ALEN];
1908         struct wpa_bss *fast_reconnect = NULL;
1909         struct wpa_ssid *fast_reconnect_ssid = NULL;
1910         struct wpa_ssid *last_ssid;
1911
1912         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1913         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1914
1915         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1916                 /*
1917                  * At least Host AP driver and a Prism3 card seemed to be
1918                  * generating streams of disconnected events when configuring
1919                  * IBSS for WPA-None. Ignore them for now.
1920                  */
1921                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1922                         "IBSS/WPA-None mode");
1923                 return;
1924         }
1925
1926         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
1927                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1928                         "pre-shared key may be incorrect");
1929                 wpas_auth_failed(wpa_s);
1930         }
1931         if (!wpa_s->auto_reconnect_disabled ||
1932             wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1933                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
1934                         "reconnect (wps=%d wpa_state=%d)",
1935                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
1936                         wpa_s->wpa_state);
1937                 if (wpa_s->wpa_state == WPA_COMPLETED &&
1938                     wpa_s->current_ssid &&
1939                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
1940                     !locally_generated &&
1941                     disconnect_reason_recoverable(reason_code)) {
1942                         /*
1943                          * It looks like the AP has dropped association with
1944                          * us, but could allow us to get back in. Try to
1945                          * reconnect to the same BSS without full scan to save
1946                          * time for some common cases.
1947                          */
1948                         fast_reconnect = wpa_s->current_bss;
1949                         fast_reconnect_ssid = wpa_s->current_ssid;
1950                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1951                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1952                 else
1953                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
1954                                 "immediate scan");
1955         } else {
1956                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
1957                         "try to re-connect");
1958                 wpa_s->reassociate = 0;
1959                 wpa_s->disconnected = 1;
1960                 wpa_supplicant_cancel_sched_scan(wpa_s);
1961         }
1962         bssid = wpa_s->bssid;
1963         if (is_zero_ether_addr(bssid))
1964                 bssid = wpa_s->pending_bssid;
1965         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
1966                 wpas_connection_failed(wpa_s, bssid);
1967         wpa_sm_notify_disassoc(wpa_s->wpa);
1968         if (locally_generated)
1969                 wpa_s->disconnect_reason = -reason_code;
1970         else
1971                 wpa_s->disconnect_reason = reason_code;
1972         wpas_notify_disconnect_reason(wpa_s);
1973         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1974                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1975                 wpa_s->keys_cleared = 0;
1976                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1977         }
1978         last_ssid = wpa_s->current_ssid;
1979         wpa_supplicant_mark_disassoc(wpa_s);
1980
1981         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
1982                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
1983                 wpa_s->current_ssid = last_ssid;
1984         }
1985
1986         if (fast_reconnect) {
1987 #ifndef CONFIG_NO_SCAN_PROCESSING
1988                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
1989                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
1990                                            fast_reconnect_ssid) < 0) {
1991                         /* Recover through full scan */
1992                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1993                 }
1994 #endif /* CONFIG_NO_SCAN_PROCESSING */
1995         }
1996 }
1997
1998
1999 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2000 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2001 {
2002         struct wpa_supplicant *wpa_s = eloop_ctx;
2003
2004         if (!wpa_s->pending_mic_error_report)
2005                 return;
2006
2007         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2008         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2009         wpa_s->pending_mic_error_report = 0;
2010 }
2011 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2012
2013
2014 static void
2015 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2016                                          union wpa_event_data *data)
2017 {
2018         int pairwise;
2019         struct os_time t;
2020
2021         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2022         pairwise = (data && data->michael_mic_failure.unicast);
2023         os_get_time(&t);
2024         if ((wpa_s->last_michael_mic_error &&
2025              t.sec - wpa_s->last_michael_mic_error <= 60) ||
2026             wpa_s->pending_mic_error_report) {
2027                 if (wpa_s->pending_mic_error_report) {
2028                         /*
2029                          * Send the pending MIC error report immediately since
2030                          * we are going to start countermeasures and AP better
2031                          * do the same.
2032                          */
2033                         wpa_sm_key_request(wpa_s->wpa, 1,
2034                                            wpa_s->pending_mic_error_pairwise);
2035                 }
2036
2037                 /* Send the new MIC error report immediately since we are going
2038                  * to start countermeasures and AP better do the same.
2039                  */
2040                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2041
2042                 /* initialize countermeasures */
2043                 wpa_s->countermeasures = 1;
2044
2045                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2046
2047                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2048
2049                 /*
2050                  * Need to wait for completion of request frame. We do not get
2051                  * any callback for the message completion, so just wait a
2052                  * short while and hope for the best. */
2053                 os_sleep(0, 10000);
2054
2055                 wpa_drv_set_countermeasures(wpa_s, 1);
2056                 wpa_supplicant_deauthenticate(wpa_s,
2057                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2058                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2059                                      wpa_s, NULL);
2060                 eloop_register_timeout(60, 0,
2061                                        wpa_supplicant_stop_countermeasures,
2062                                        wpa_s, NULL);
2063                 /* TODO: mark the AP rejected for 60 second. STA is
2064                  * allowed to associate with another AP.. */
2065         } else {
2066 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2067                 if (wpa_s->mic_errors_seen) {
2068                         /*
2069                          * Reduce the effectiveness of Michael MIC error
2070                          * reports as a means for attacking against TKIP if
2071                          * more than one MIC failure is noticed with the same
2072                          * PTK. We delay the transmission of the reports by a
2073                          * random time between 0 and 60 seconds in order to
2074                          * force the attacker wait 60 seconds before getting
2075                          * the information on whether a frame resulted in a MIC
2076                          * failure.
2077                          */
2078                         u8 rval[4];
2079                         int sec;
2080
2081                         if (os_get_random(rval, sizeof(rval)) < 0)
2082                                 sec = os_random() % 60;
2083                         else
2084                                 sec = WPA_GET_BE32(rval) % 60;
2085                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2086                                 "report %d seconds", sec);
2087                         wpa_s->pending_mic_error_report = 1;
2088                         wpa_s->pending_mic_error_pairwise = pairwise;
2089                         eloop_cancel_timeout(
2090                                 wpa_supplicant_delayed_mic_error_report,
2091                                 wpa_s, NULL);
2092                         eloop_register_timeout(
2093                                 sec, os_random() % 1000000,
2094                                 wpa_supplicant_delayed_mic_error_report,
2095                                 wpa_s, NULL);
2096                 } else {
2097                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2098                 }
2099 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2100                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2101 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2102         }
2103         wpa_s->last_michael_mic_error = t.sec;
2104         wpa_s->mic_errors_seen++;
2105 }
2106
2107
2108 #ifdef CONFIG_TERMINATE_ONLASTIF
2109 static int any_interfaces(struct wpa_supplicant *head)
2110 {
2111         struct wpa_supplicant *wpa_s;
2112
2113         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2114                 if (!wpa_s->interface_removed)
2115                         return 1;
2116         return 0;
2117 }
2118 #endif /* CONFIG_TERMINATE_ONLASTIF */
2119
2120
2121 static void
2122 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2123                                       union wpa_event_data *data)
2124 {
2125         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2126                 return;
2127
2128         switch (data->interface_status.ievent) {
2129         case EVENT_INTERFACE_ADDED:
2130                 if (!wpa_s->interface_removed)
2131                         break;
2132                 wpa_s->interface_removed = 0;
2133                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2134                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2135                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2136                                 "driver after interface was added");
2137                 }
2138                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2139                 break;
2140         case EVENT_INTERFACE_REMOVED:
2141                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2142                 wpa_s->interface_removed = 1;
2143                 wpa_supplicant_mark_disassoc(wpa_s);
2144                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2145                 l2_packet_deinit(wpa_s->l2);
2146                 wpa_s->l2 = NULL;
2147 #ifdef CONFIG_IBSS_RSN
2148                 ibss_rsn_deinit(wpa_s->ibss_rsn);
2149                 wpa_s->ibss_rsn = NULL;
2150 #endif /* CONFIG_IBSS_RSN */
2151 #ifdef CONFIG_TERMINATE_ONLASTIF
2152                 /* check if last interface */
2153                 if (!any_interfaces(wpa_s->global->ifaces))
2154                         eloop_terminate();
2155 #endif /* CONFIG_TERMINATE_ONLASTIF */
2156                 break;
2157         }
2158 }
2159
2160
2161 #ifdef CONFIG_PEERKEY
2162 static void
2163 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2164                               union wpa_event_data *data)
2165 {
2166         if (data == NULL)
2167                 return;
2168         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2169 }
2170 #endif /* CONFIG_PEERKEY */
2171
2172
2173 #ifdef CONFIG_TDLS
2174 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2175                                       union wpa_event_data *data)
2176 {
2177         if (data == NULL)
2178                 return;
2179         switch (data->tdls.oper) {
2180         case TDLS_REQUEST_SETUP:
2181                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2182                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2183                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2184                 else
2185                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2186                 break;
2187         case TDLS_REQUEST_TEARDOWN:
2188                 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2189                                        data->tdls.reason_code);
2190                 break;
2191         }
2192 }
2193 #endif /* CONFIG_TDLS */
2194
2195
2196 #ifdef CONFIG_WNM
2197 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2198                                      union wpa_event_data *data)
2199 {
2200         if (data == NULL)
2201                 return;
2202         switch (data->wnm.oper) {
2203         case WNM_OPER_SLEEP:
2204                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2205                            "(action=%d, intval=%d)",
2206                            data->wnm.sleep_action, data->wnm.sleep_intval);
2207                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2208                                              data->wnm.sleep_intval, NULL);
2209                 break;
2210         }
2211 }
2212 #endif /* CONFIG_WNM */
2213
2214
2215 #ifdef CONFIG_IEEE80211R
2216 static void
2217 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2218                                  union wpa_event_data *data)
2219 {
2220         if (data == NULL)
2221                 return;
2222
2223         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2224                                     data->ft_ies.ies_len,
2225                                     data->ft_ies.ft_action,
2226                                     data->ft_ies.target_ap,
2227                                     data->ft_ies.ric_ies,
2228                                     data->ft_ies.ric_ies_len) < 0) {
2229                 /* TODO: prevent MLME/driver from trying to associate? */
2230         }
2231 }
2232 #endif /* CONFIG_IEEE80211R */
2233
2234
2235 #ifdef CONFIG_IBSS_RSN
2236 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2237                                                 union wpa_event_data *data)
2238 {
2239         struct wpa_ssid *ssid;
2240         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2241                 return;
2242         if (data == NULL)
2243                 return;
2244         ssid = wpa_s->current_ssid;
2245         if (ssid == NULL)
2246                 return;
2247         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2248                 return;
2249
2250         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2251 }
2252 #endif /* CONFIG_IBSS_RSN */
2253
2254
2255 #ifdef CONFIG_IEEE80211R
2256 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2257                          size_t len)
2258 {
2259         const u8 *sta_addr, *target_ap_addr;
2260         u16 status;
2261
2262         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2263         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2264                 return; /* only SME case supported for now */
2265         if (len < 1 + 2 * ETH_ALEN + 2)
2266                 return;
2267         if (data[0] != 2)
2268                 return; /* Only FT Action Response is supported for now */
2269         sta_addr = data + 1;
2270         target_ap_addr = data + 1 + ETH_ALEN;
2271         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2272         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2273                 MACSTR " TargetAP " MACSTR " status %u",
2274                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2275
2276         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2277                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2278                         " in FT Action Response", MAC2STR(sta_addr));
2279                 return;
2280         }
2281
2282         if (status) {
2283                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2284                         "failure (status code %d)", status);
2285                 /* TODO: report error to FT code(?) */
2286                 return;
2287         }
2288
2289         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2290                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2291                                     target_ap_addr, NULL, 0) < 0)
2292                 return;
2293
2294 #ifdef CONFIG_SME
2295         {
2296                 struct wpa_bss *bss;
2297                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2298                 if (bss)
2299                         wpa_s->sme.freq = bss->freq;
2300                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2301                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2302                               WLAN_AUTH_FT);
2303         }
2304 #endif /* CONFIG_SME */
2305 }
2306 #endif /* CONFIG_IEEE80211R */
2307
2308
2309 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2310                                                struct unprot_deauth *e)
2311 {
2312 #ifdef CONFIG_IEEE80211W
2313         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2314                    "dropped: " MACSTR " -> " MACSTR
2315                    " (reason code %u)",
2316                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2317         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2318 #endif /* CONFIG_IEEE80211W */
2319 }
2320
2321
2322 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2323                                                  struct unprot_disassoc *e)
2324 {
2325 #ifdef CONFIG_IEEE80211W
2326         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2327                    "dropped: " MACSTR " -> " MACSTR
2328                    " (reason code %u)",
2329                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2330         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2331 #endif /* CONFIG_IEEE80211W */
2332 }
2333
2334
2335 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2336                           union wpa_event_data *data)
2337 {
2338         struct wpa_supplicant *wpa_s = ctx;
2339         u16 reason_code = 0;
2340         int locally_generated = 0;
2341
2342         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2343             event != EVENT_INTERFACE_ENABLED &&
2344             event != EVENT_INTERFACE_STATUS &&
2345             event != EVENT_SCHED_SCAN_STOPPED) {
2346                 wpa_dbg(wpa_s, MSG_DEBUG,
2347                         "Ignore event %s (%d) while interface is disabled",
2348                         event_to_string(event), event);
2349                 return;
2350         }
2351
2352 #ifndef CONFIG_NO_STDOUT_DEBUG
2353 {
2354         int level = MSG_DEBUG;
2355
2356         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2357                 const struct ieee80211_hdr *hdr;
2358                 u16 fc;
2359                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2360                 fc = le_to_host16(hdr->frame_control);
2361                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2362                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2363                         level = MSG_EXCESSIVE;
2364         }
2365
2366         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2367                 event_to_string(event), event);
2368 }
2369 #endif /* CONFIG_NO_STDOUT_DEBUG */
2370
2371         switch (event) {
2372         case EVENT_AUTH:
2373                 sme_event_auth(wpa_s, data);
2374                 break;
2375         case EVENT_ASSOC:
2376                 wpa_supplicant_event_assoc(wpa_s, data);
2377                 break;
2378         case EVENT_DISASSOC:
2379                 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2380                 if (data) {
2381                         wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2382                                 data->disassoc_info.reason_code,
2383                                 data->disassoc_info.locally_generated ?
2384                                 " (locally generated)" : "");
2385                         if (data->disassoc_info.addr)
2386                                 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2387                                         MAC2STR(data->disassoc_info.addr));
2388                 }
2389 #ifdef CONFIG_AP
2390                 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
2391                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2392                                                data->disassoc_info.addr);
2393                         break;
2394                 }
2395                 if (wpa_s->ap_iface) {
2396                         wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in "
2397                                 "AP mode");
2398                         break;
2399                 }
2400 #endif /* CONFIG_AP */
2401                 if (data) {
2402                         reason_code = data->disassoc_info.reason_code;
2403                         locally_generated =
2404                                 data->disassoc_info.locally_generated;
2405                         wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2406                                     data->disassoc_info.ie,
2407                                     data->disassoc_info.ie_len);
2408 #ifdef CONFIG_P2P
2409                         wpas_p2p_disassoc_notif(
2410                                 wpa_s, data->disassoc_info.addr, reason_code,
2411                                 data->disassoc_info.ie,
2412                                 data->disassoc_info.ie_len,
2413                                 locally_generated);
2414 #endif /* CONFIG_P2P */
2415                 }
2416                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2417                         sme_event_disassoc(wpa_s, data);
2418                 /* fall through */
2419         case EVENT_DEAUTH:
2420                 if (event == EVENT_DEAUTH) {
2421                         wpa_dbg(wpa_s, MSG_DEBUG,
2422                                 "Deauthentication notification");
2423                         if (data) {
2424                                 reason_code = data->deauth_info.reason_code;
2425                                 locally_generated =
2426                                         data->deauth_info.locally_generated;
2427                                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2428                                         data->deauth_info.reason_code,
2429                                         data->deauth_info.locally_generated ?
2430                                         " (locally generated)" : "");
2431                                 if (data->deauth_info.addr) {
2432                                         wpa_dbg(wpa_s, MSG_DEBUG, " * address "
2433                                                 MACSTR,
2434                                                 MAC2STR(data->deauth_info.
2435                                                         addr));
2436                                 }
2437                                 wpa_hexdump(MSG_DEBUG,
2438                                             "Deauthentication frame IE(s)",
2439                                             data->deauth_info.ie,
2440                                             data->deauth_info.ie_len);
2441                         }
2442                 }
2443 #ifdef CONFIG_AP
2444                 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
2445                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2446                                                data->deauth_info.addr);
2447                         break;
2448                 }
2449                 if (wpa_s->ap_iface) {
2450                         wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in "
2451                                 "AP mode");
2452                         break;
2453                 }
2454 #endif /* CONFIG_AP */
2455                 wpa_supplicant_event_disassoc(wpa_s, reason_code,
2456                                               locally_generated);
2457                 if (reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2458                     ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2459                       (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2460                      eapol_sm_failed(wpa_s->eapol)))
2461                         wpas_auth_failed(wpa_s);
2462 #ifdef CONFIG_P2P
2463                 if (event == EVENT_DEAUTH && data) {
2464                         if (wpas_p2p_deauth_notif(wpa_s,
2465                                                   data->deauth_info.addr,
2466                                                   reason_code,
2467                                                   data->deauth_info.ie,
2468                                                   data->deauth_info.ie_len,
2469                                                   locally_generated) > 0) {
2470                                 /*
2471                                  * The interface was removed, so cannot
2472                                  * continue processing any additional
2473                                  * operations after this.
2474                                  */
2475                                 break;
2476                         }
2477                 }
2478 #endif /* CONFIG_P2P */
2479                 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2480                                                      locally_generated);
2481                 break;
2482         case EVENT_MICHAEL_MIC_FAILURE:
2483                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2484                 break;
2485 #ifndef CONFIG_NO_SCAN_PROCESSING
2486         case EVENT_SCAN_RESULTS:
2487                 wpa_supplicant_event_scan_results(wpa_s, data);
2488 #ifdef CONFIG_P2P
2489         if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
2490             wpa_s->global->p2p != NULL &&
2491             wpa_s->wpa_state != WPA_AUTHENTICATING &&
2492             wpa_s->wpa_state != WPA_ASSOCIATING) {
2493                 wpa_s->global->p2p_cb_on_scan_complete = 0;
2494                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
2495                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
2496                                 "continued after scan result processing");
2497                 }
2498         }
2499 #endif /* CONFIG_P2P */
2500                 break;
2501 #endif /* CONFIG_NO_SCAN_PROCESSING */
2502         case EVENT_ASSOCINFO:
2503                 wpa_supplicant_event_associnfo(wpa_s, data);
2504                 break;
2505         case EVENT_INTERFACE_STATUS:
2506                 wpa_supplicant_event_interface_status(wpa_s, data);
2507                 break;
2508         case EVENT_PMKID_CANDIDATE:
2509                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2510                 break;
2511 #ifdef CONFIG_PEERKEY
2512         case EVENT_STKSTART:
2513                 wpa_supplicant_event_stkstart(wpa_s, data);
2514                 break;
2515 #endif /* CONFIG_PEERKEY */
2516 #ifdef CONFIG_TDLS
2517         case EVENT_TDLS:
2518                 wpa_supplicant_event_tdls(wpa_s, data);
2519                 break;
2520 #endif /* CONFIG_TDLS */
2521 #ifdef CONFIG_WNM
2522         case EVENT_WNM:
2523                 wpa_supplicant_event_wnm(wpa_s, data);
2524                 break;
2525 #endif /* CONFIG_WNM */
2526 #ifdef CONFIG_IEEE80211R
2527         case EVENT_FT_RESPONSE:
2528                 wpa_supplicant_event_ft_response(wpa_s, data);
2529                 break;
2530 #endif /* CONFIG_IEEE80211R */
2531 #ifdef CONFIG_IBSS_RSN
2532         case EVENT_IBSS_RSN_START:
2533                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2534                 break;
2535 #endif /* CONFIG_IBSS_RSN */
2536         case EVENT_ASSOC_REJECT:
2537                 if (data->assoc_reject.bssid)
2538                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2539                                 "bssid=" MACSTR " status_code=%u",
2540                                 MAC2STR(data->assoc_reject.bssid),
2541                                 data->assoc_reject.status_code);
2542                 else
2543                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2544                                 "status_code=%u",
2545                                 data->assoc_reject.status_code);
2546                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2547                         sme_event_assoc_reject(wpa_s, data);
2548                 else {
2549                         const u8 *bssid = data->assoc_reject.bssid;
2550                         if (bssid == NULL || is_zero_ether_addr(bssid))
2551                                 bssid = wpa_s->pending_bssid;
2552                         wpas_connection_failed(wpa_s, bssid);
2553                         wpa_supplicant_mark_disassoc(wpa_s);
2554                 }
2555                 break;
2556         case EVENT_AUTH_TIMED_OUT:
2557                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2558                         sme_event_auth_timed_out(wpa_s, data);
2559                 break;
2560         case EVENT_ASSOC_TIMED_OUT:
2561                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2562                         sme_event_assoc_timed_out(wpa_s, data);
2563                 break;
2564         case EVENT_TX_STATUS:
2565                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2566                         " type=%d stype=%d",
2567                         MAC2STR(data->tx_status.dst),
2568                         data->tx_status.type, data->tx_status.stype);
2569 #ifdef CONFIG_AP
2570                 if (wpa_s->ap_iface == NULL) {
2571 #ifdef CONFIG_OFFCHANNEL
2572                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2573                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2574                                 offchannel_send_action_tx_status(
2575                                         wpa_s, data->tx_status.dst,
2576                                         data->tx_status.data,
2577                                         data->tx_status.data_len,
2578                                         data->tx_status.ack ?
2579                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
2580                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
2581 #endif /* CONFIG_OFFCHANNEL */
2582                         break;
2583                 }
2584 #endif /* CONFIG_AP */
2585 #ifdef CONFIG_OFFCHANNEL
2586                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2587                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2588                 /*
2589                  * Catch TX status events for Action frames we sent via group
2590                  * interface in GO mode.
2591                  */
2592                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2593                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2594                     os_memcmp(wpa_s->parent->pending_action_dst,
2595                               data->tx_status.dst, ETH_ALEN) == 0) {
2596                         offchannel_send_action_tx_status(
2597                                 wpa_s->parent, data->tx_status.dst,
2598                                 data->tx_status.data,
2599                                 data->tx_status.data_len,
2600                                 data->tx_status.ack ?
2601                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
2602                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
2603                         break;
2604                 }
2605 #endif /* CONFIG_OFFCHANNEL */
2606 #ifdef CONFIG_AP
2607                 switch (data->tx_status.type) {
2608                 case WLAN_FC_TYPE_MGMT:
2609                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2610                                       data->tx_status.data_len,
2611                                       data->tx_status.stype,
2612                                       data->tx_status.ack);
2613                         break;
2614                 case WLAN_FC_TYPE_DATA:
2615                         ap_tx_status(wpa_s, data->tx_status.dst,
2616                                      data->tx_status.data,
2617                                      data->tx_status.data_len,
2618                                      data->tx_status.ack);
2619                         break;
2620                 }
2621 #endif /* CONFIG_AP */
2622                 break;
2623 #ifdef CONFIG_AP
2624         case EVENT_EAPOL_TX_STATUS:
2625                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
2626                                    data->eapol_tx_status.data,
2627                                    data->eapol_tx_status.data_len,
2628                                    data->eapol_tx_status.ack);
2629                 break;
2630         case EVENT_DRIVER_CLIENT_POLL_OK:
2631                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
2632                 break;
2633         case EVENT_RX_FROM_UNKNOWN:
2634                 if (wpa_s->ap_iface == NULL)
2635                         break;
2636                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
2637                                        data->rx_from_unknown.wds);
2638                 break;
2639         case EVENT_CH_SWITCH:
2640                 if (!data)
2641                         break;
2642                 if (!wpa_s->ap_iface) {
2643                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
2644                                 "event in non-AP mode");
2645                         break;
2646                 }
2647
2648 #ifdef CONFIG_AP
2649                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
2650                                   data->ch_switch.ht_enabled,
2651                                   data->ch_switch.ch_offset);
2652 #endif /* CONFIG_AP */
2653                 break;
2654         case EVENT_RX_MGMT: {
2655                 u16 fc, stype;
2656                 const struct ieee80211_mgmt *mgmt;
2657
2658                 mgmt = (const struct ieee80211_mgmt *)
2659                         data->rx_mgmt.frame;
2660                 fc = le_to_host16(mgmt->frame_control);
2661                 stype = WLAN_FC_GET_STYPE(fc);
2662
2663                 if (wpa_s->ap_iface == NULL) {
2664 #ifdef CONFIG_P2P
2665                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2666                             data->rx_mgmt.frame_len > 24) {
2667                                 const u8 *src = mgmt->sa;
2668                                 const u8 *ie = mgmt->u.probe_req.variable;
2669                                 size_t ie_len = data->rx_mgmt.frame_len -
2670                                         (mgmt->u.probe_req.variable -
2671                                          data->rx_mgmt.frame);
2672                                 wpas_p2p_probe_req_rx(
2673                                         wpa_s, src, mgmt->da,
2674                                         mgmt->bssid, ie, ie_len,
2675                                         data->rx_mgmt.ssi_signal);
2676                                 break;
2677                         }
2678 #endif /* CONFIG_P2P */
2679                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2680                                 "management frame in non-AP mode");
2681                         break;
2682                 }
2683
2684                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2685                     data->rx_mgmt.frame_len > 24) {
2686                         const u8 *ie = mgmt->u.probe_req.variable;
2687                         size_t ie_len = data->rx_mgmt.frame_len -
2688                                 (mgmt->u.probe_req.variable -
2689                                  data->rx_mgmt.frame);
2690
2691                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
2692                                          mgmt->bssid, ie, ie_len,
2693                                          data->rx_mgmt.ssi_signal);
2694                 }
2695
2696                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2697                 break;
2698                 }
2699 #endif /* CONFIG_AP */
2700         case EVENT_RX_ACTION:
2701                 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2702                         " Category=%u DataLen=%d freq=%d MHz",
2703                         MAC2STR(data->rx_action.sa),
2704                         data->rx_action.category, (int) data->rx_action.len,
2705                         data->rx_action.freq);
2706 #ifdef CONFIG_IEEE80211R
2707                 if (data->rx_action.category == WLAN_ACTION_FT) {
2708                         ft_rx_action(wpa_s, data->rx_action.data,
2709                                      data->rx_action.len);
2710                         break;
2711                 }
2712 #endif /* CONFIG_IEEE80211R */
2713 #ifdef CONFIG_IEEE80211W
2714 #ifdef CONFIG_SME
2715                 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2716                         sme_sa_query_rx(wpa_s, data->rx_action.sa,
2717                                         data->rx_action.data,
2718                                         data->rx_action.len);
2719                         break;
2720                 }
2721 #endif /* CONFIG_SME */
2722 #endif /* CONFIG_IEEE80211W */
2723 #ifdef CONFIG_WNM
2724                 if (data->rx_action.category == WLAN_ACTION_WNM) {
2725                         ieee802_11_rx_wnm_action(wpa_s, &data->rx_action);
2726                         break;
2727                 }
2728 #endif /* CONFIG_WNM */
2729 #ifdef CONFIG_GAS
2730                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2731                     gas_query_rx(wpa_s->gas, data->rx_action.da,
2732                                  data->rx_action.sa, data->rx_action.bssid,
2733                                  data->rx_action.data, data->rx_action.len,
2734                                  data->rx_action.freq) == 0)
2735                         break;
2736 #endif /* CONFIG_GAS */
2737 #ifdef CONFIG_TDLS
2738                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2739                     data->rx_action.len >= 4 &&
2740                     data->rx_action.data[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2741                         wpa_dbg(wpa_s, MSG_DEBUG, "TDLS: Received Discovery "
2742                                 "Response from " MACSTR,
2743                                 MAC2STR(data->rx_action.sa));
2744                         break;
2745                 }
2746 #endif /* CONFIG_TDLS */
2747 #ifdef CONFIG_P2P
2748                 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2749                                    data->rx_action.sa,
2750                                    data->rx_action.bssid,
2751                                    data->rx_action.category,
2752                                    data->rx_action.data,
2753                                    data->rx_action.len, data->rx_action.freq);
2754 #endif /* CONFIG_P2P */
2755                 break;
2756         case EVENT_RX_PROBE_REQ:
2757                 if (data->rx_probe_req.sa == NULL ||
2758                     data->rx_probe_req.ie == NULL)
2759                         break;
2760 #ifdef CONFIG_AP
2761                 if (wpa_s->ap_iface) {
2762                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2763                                              data->rx_probe_req.sa,
2764                                              data->rx_probe_req.da,
2765                                              data->rx_probe_req.bssid,
2766                                              data->rx_probe_req.ie,
2767                                              data->rx_probe_req.ie_len,
2768                                              data->rx_probe_req.ssi_signal);
2769                         break;
2770                 }
2771 #endif /* CONFIG_AP */
2772 #ifdef CONFIG_P2P
2773                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2774                                       data->rx_probe_req.da,
2775                                       data->rx_probe_req.bssid,
2776                                       data->rx_probe_req.ie,
2777                                       data->rx_probe_req.ie_len,
2778                                       data->rx_probe_req.ssi_signal);
2779 #endif /* CONFIG_P2P */
2780                 break;
2781         case EVENT_REMAIN_ON_CHANNEL:
2782 #ifdef CONFIG_OFFCHANNEL
2783                 offchannel_remain_on_channel_cb(
2784                         wpa_s, data->remain_on_channel.freq,
2785                         data->remain_on_channel.duration);
2786 #endif /* CONFIG_OFFCHANNEL */
2787 #ifdef CONFIG_P2P
2788                 wpas_p2p_remain_on_channel_cb(
2789                         wpa_s, data->remain_on_channel.freq,
2790                         data->remain_on_channel.duration);
2791 #endif /* CONFIG_P2P */
2792                 break;
2793         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2794 #ifdef CONFIG_OFFCHANNEL
2795                 offchannel_cancel_remain_on_channel_cb(
2796                         wpa_s, data->remain_on_channel.freq);
2797 #endif /* CONFIG_OFFCHANNEL */
2798 #ifdef CONFIG_P2P
2799                 wpas_p2p_cancel_remain_on_channel_cb(
2800                         wpa_s, data->remain_on_channel.freq);
2801 #endif /* CONFIG_P2P */
2802                 break;
2803 #ifdef CONFIG_P2P
2804         case EVENT_P2P_DEV_FOUND: {
2805                 struct p2p_peer_info peer_info;
2806
2807                 os_memset(&peer_info, 0, sizeof(peer_info));
2808                 if (data->p2p_dev_found.dev_addr)
2809                         os_memcpy(peer_info.p2p_device_addr,
2810                                   data->p2p_dev_found.dev_addr, ETH_ALEN);
2811                 if (data->p2p_dev_found.pri_dev_type)
2812                         os_memcpy(peer_info.pri_dev_type,
2813                                   data->p2p_dev_found.pri_dev_type,
2814                                   sizeof(peer_info.pri_dev_type));
2815                 if (data->p2p_dev_found.dev_name)
2816                         os_strlcpy(peer_info.device_name,
2817                                    data->p2p_dev_found.dev_name,
2818                                    sizeof(peer_info.device_name));
2819                 peer_info.config_methods = data->p2p_dev_found.config_methods;
2820                 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2821                 peer_info.group_capab = data->p2p_dev_found.group_capab;
2822
2823                 /*
2824                  * FIX: new_device=1 is not necessarily correct. We should
2825                  * maintain a P2P peer database in wpa_supplicant and update
2826                  * this information based on whether the peer is truly new.
2827                  */
2828                 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2829                 break;
2830                 }
2831         case EVENT_P2P_GO_NEG_REQ_RX:
2832                 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2833                                    data->p2p_go_neg_req_rx.dev_passwd_id);
2834                 break;
2835         case EVENT_P2P_GO_NEG_COMPLETED:
2836                 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2837                 break;
2838         case EVENT_P2P_PROV_DISC_REQUEST:
2839                 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2840                                    data->p2p_prov_disc_req.config_methods,
2841                                    data->p2p_prov_disc_req.dev_addr,
2842                                    data->p2p_prov_disc_req.pri_dev_type,
2843                                    data->p2p_prov_disc_req.dev_name,
2844                                    data->p2p_prov_disc_req.supp_config_methods,
2845                                    data->p2p_prov_disc_req.dev_capab,
2846                                    data->p2p_prov_disc_req.group_capab,
2847                                    NULL, 0);
2848                 break;
2849         case EVENT_P2P_PROV_DISC_RESPONSE:
2850                 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2851                                     data->p2p_prov_disc_resp.config_methods);
2852                 break;
2853         case EVENT_P2P_SD_REQUEST:
2854                 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2855                                 data->p2p_sd_req.sa,
2856                                 data->p2p_sd_req.dialog_token,
2857                                 data->p2p_sd_req.update_indic,
2858                                 data->p2p_sd_req.tlvs,
2859                                 data->p2p_sd_req.tlvs_len);
2860                 break;
2861         case EVENT_P2P_SD_RESPONSE:
2862                 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2863                                  data->p2p_sd_resp.update_indic,
2864                                  data->p2p_sd_resp.tlvs,
2865                                  data->p2p_sd_resp.tlvs_len);
2866                 break;
2867 #endif /* CONFIG_P2P */
2868         case EVENT_EAPOL_RX:
2869                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2870                                         data->eapol_rx.data,
2871                                         data->eapol_rx.data_len);
2872                 break;
2873         case EVENT_SIGNAL_CHANGE:
2874                 bgscan_notify_signal_change(
2875                         wpa_s, data->signal_change.above_threshold,
2876                         data->signal_change.current_signal,
2877                         data->signal_change.current_noise,
2878                         data->signal_change.current_txrate);
2879                 break;
2880         case EVENT_INTERFACE_ENABLED:
2881                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2882                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2883                         wpa_supplicant_update_mac_addr(wpa_s);
2884 #ifdef CONFIG_AP
2885                         if (!wpa_s->ap_iface) {
2886                                 wpa_supplicant_set_state(wpa_s,
2887                                                          WPA_DISCONNECTED);
2888                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2889                         } else
2890                                 wpa_supplicant_set_state(wpa_s,
2891                                                          WPA_COMPLETED);
2892 #else /* CONFIG_AP */
2893                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2894                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2895 #endif /* CONFIG_AP */
2896                 }
2897                 break;
2898         case EVENT_INTERFACE_DISABLED:
2899                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2900                 wpa_supplicant_mark_disassoc(wpa_s);
2901                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2902                 break;
2903         case EVENT_CHANNEL_LIST_CHANGED:
2904                 if (wpa_s->drv_priv == NULL)
2905                         break; /* Ignore event during drv initialization */
2906
2907                 free_hw_features(wpa_s);
2908                 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2909                         wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2910
2911 #ifdef CONFIG_P2P
2912                 wpas_p2p_update_channel_list(wpa_s);
2913 #endif /* CONFIG_P2P */
2914                 break;
2915         case EVENT_INTERFACE_UNAVAILABLE:
2916 #ifdef CONFIG_P2P
2917                 wpas_p2p_interface_unavailable(wpa_s);
2918 #endif /* CONFIG_P2P */
2919                 break;
2920         case EVENT_BEST_CHANNEL:
2921                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2922                         "(%d %d %d)",
2923                         data->best_chan.freq_24, data->best_chan.freq_5,
2924                         data->best_chan.freq_overall);
2925                 wpa_s->best_24_freq = data->best_chan.freq_24;
2926                 wpa_s->best_5_freq = data->best_chan.freq_5;
2927                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2928 #ifdef CONFIG_P2P
2929                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2930                                               data->best_chan.freq_5,
2931                                               data->best_chan.freq_overall);
2932 #endif /* CONFIG_P2P */
2933                 break;
2934         case EVENT_UNPROT_DEAUTH:
2935                 wpa_supplicant_event_unprot_deauth(wpa_s,
2936                                                    &data->unprot_deauth);
2937                 break;
2938         case EVENT_UNPROT_DISASSOC:
2939                 wpa_supplicant_event_unprot_disassoc(wpa_s,
2940                                                      &data->unprot_disassoc);
2941                 break;
2942         case EVENT_STATION_LOW_ACK:
2943 #ifdef CONFIG_AP
2944                 if (wpa_s->ap_iface && data)
2945                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2946                                                   data->low_ack.addr);
2947 #endif /* CONFIG_AP */
2948 #ifdef CONFIG_TDLS
2949                 if (data)
2950                         wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
2951 #endif /* CONFIG_TDLS */
2952                 break;
2953         case EVENT_IBSS_PEER_LOST:
2954 #ifdef CONFIG_IBSS_RSN
2955                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
2956 #endif /* CONFIG_IBSS_RSN */
2957                 break;
2958         case EVENT_DRIVER_GTK_REKEY:
2959                 if (os_memcmp(data->driver_gtk_rekey.bssid,
2960                               wpa_s->bssid, ETH_ALEN))
2961                         break;
2962                 if (!wpa_s->wpa)
2963                         break;
2964                 wpa_sm_update_replay_ctr(wpa_s->wpa,
2965                                          data->driver_gtk_rekey.replay_ctr);
2966                 break;
2967         case EVENT_SCHED_SCAN_STOPPED:
2968                 wpa_s->sched_scanning = 0;
2969                 wpa_supplicant_notify_scanning(wpa_s, 0);
2970
2971                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2972                         break;
2973
2974                 /*
2975                  * If we timed out, start a new sched scan to continue
2976                  * searching for more SSIDs.
2977                  */
2978                 if (wpa_s->sched_scan_timed_out)
2979                         wpa_supplicant_req_sched_scan(wpa_s);
2980                 break;
2981         case EVENT_WPS_BUTTON_PUSHED:
2982 #ifdef CONFIG_WPS
2983                 wpas_wps_start_pbc(wpa_s, NULL, 0);
2984 #endif /* CONFIG_WPS */
2985                 break;
2986         case EVENT_CONNECT_FAILED_REASON:
2987 #ifdef CONFIG_AP
2988                 if (!wpa_s->ap_iface || !data)
2989                         break;
2990                 hostapd_event_connect_failed_reason(
2991                         wpa_s->ap_iface->bss[0],
2992                         data->connect_failed_reason.addr,
2993                         data->connect_failed_reason.code);
2994 #endif /* CONFIG_AP */
2995                 break;
2996         default:
2997                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2998                 break;
2999         }
3000 }