wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2010, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eapol_supp/eapol_supp_sm.h"
  19 #include "rsn_supp/wpa.h"
  20 #include "eloop.h"
  21 #include "config.h"
  22 #include "l2_packet/l2_packet.h"
  23 #include "wpa_supplicant_i.h"
  24 #include "driver_i.h"
  25 #include "pcsc_funcs.h"
  26 #include "rsn_supp/preauth.h"
  27 #include "rsn_supp/pmksa_cache.h"
  28 #include "common/wpa_ctrl.h"
  29 #include "eap_peer/eap.h"
  30 #include "ap/hostapd.h"
  31 #include "notify.h"
  32 #include "common/ieee802_11_defs.h"
  33 #include "common/ieee802_11_common.h"
  34 #include "blacklist.h"
  35 #include "wpas_glue.h"
  36 #include "wps_supplicant.h"
  37 #include "ibss_rsn.h"
  38 #include "sme.h"
  39 #include "p2p_supplicant.h"
  40 #include "bgscan.h"
  41 #include "ap.h"
  42 #include "bss.h"
  43 #include "mlme.h"
  44 #include "scan.h"
  45
  46
  47 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  48 {
  49         struct wpa_ssid *ssid, *old_ssid;
  50
  51         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  52                 return 0;
  53
  54         wpa_printf(MSG_DEBUG, "Select network based on association "
  55                    "information");
  56         ssid = wpa_supplicant_get_ssid(wpa_s);
  57         if (ssid == NULL) {
  58                 wpa_printf(MSG_INFO, "No network configuration found for the "
  59                            "current AP");
  60                 return -1;
  61         }
  62
  63         if (ssid->disabled) {
  64                 wpa_printf(MSG_DEBUG, "Selected network is disabled");
  65                 return -1;
  66         }
  67
  68         wpa_printf(MSG_DEBUG, "Network configuration found for the current "
  69                    "AP");
  70         if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
  71                               WPA_KEY_MGMT_WPA_NONE |
  72                               WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
  73                               WPA_KEY_MGMT_PSK_SHA256 |
  74                               WPA_KEY_MGMT_IEEE8021X_SHA256)) {
  75                 u8 wpa_ie[80];
  76                 size_t wpa_ie_len = sizeof(wpa_ie);
  77                 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
  78                                           wpa_ie, &wpa_ie_len);
  79         } else {
  80                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  81         }
  82
  83         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
  84                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
  85         old_ssid = wpa_s->current_ssid;
  86         wpa_s->current_ssid = ssid;
  87         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
  88         wpa_supplicant_initiate_eapol(wpa_s);
  89         if (old_ssid != wpa_s->current_ssid)
  90                 wpas_notify_network_changed(wpa_s);
  91
  92         return 0;
  93 }
  94
  95
  96 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
  97                                                 void *sock_ctx)
  98 {
  99         struct wpa_supplicant *wpa_s = eloop_ctx;
 100
 101         if (wpa_s->countermeasures) {
 102                 wpa_s->countermeasures = 0;
 103                 wpa_drv_set_countermeasures(wpa_s, 0);
 104                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 105                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 106         }
 107 }
 108
 109
 110 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 111 {
 112         int bssid_changed;
 113
 114         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 115                 return;
 116
 117         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 118         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 119         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 120         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 121         wpa_s->current_bss = NULL;
 122         if (bssid_changed)
 123                 wpas_notify_bssid_changed(wpa_s);
 124
 125         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 126         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 127         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 128                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 129         wpa_s->ap_ies_from_associnfo = 0;
 130 }
 131
 132
 133 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 134 {
 135         struct wpa_ie_data ie;
 136         int pmksa_set = -1;
 137         size_t i;
 138
 139         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 140             ie.pmkid == NULL)
 141                 return;
 142
 143         for (i = 0; i < ie.num_pmkid; i++) {
 144                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 145                                                     ie.pmkid + i * PMKID_LEN,
 146                                                     NULL, NULL, 0);
 147                 if (pmksa_set == 0) {
 148                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 149                         break;
 150                 }
 151         }
 152
 153         wpa_printf(MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from PMKSA "
 154                    "cache", pmksa_set == 0 ? "" : "not ");
 155 }
 156
 157
 158 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 159                                                  union wpa_event_data *data)
 160 {
 161         if (data == NULL) {
 162                 wpa_printf(MSG_DEBUG, "RSN: No data in PMKID candidate event");
 163                 return;
 164         }
 165         wpa_printf(MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 166                    " index=%d preauth=%d",
 167                    MAC2STR(data->pmkid_candidate.bssid),
 168                    data->pmkid_candidate.index,
 169                    data->pmkid_candidate.preauth);
 170
 171         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 172                             data->pmkid_candidate.index,
 173                             data->pmkid_candidate.preauth);
 174 }
 175
 176
 177 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 178 {
 179         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 180             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 181                 return 0;
 182
 183 #ifdef IEEE8021X_EAPOL
 184         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 185             wpa_s->current_ssid &&
 186             !(wpa_s->current_ssid->eapol_flags &
 187               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 188                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 189                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 190                  * plaintext or static WEP keys). */
 191                 return 0;
 192         }
 193 #endif /* IEEE8021X_EAPOL */
 194
 195         return 1;
 196 }
 197
 198
 199 /**
 200  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 201  * @wpa_s: pointer to wpa_supplicant data
 202  * @ssid: Configuration data for the network
 203  * Returns: 0 on success, -1 on failure
 204  *
 205  * This function is called when starting authentication with a network that is
 206  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 207  */
 208 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 209                               struct wpa_ssid *ssid)
 210 {
 211 #ifdef IEEE8021X_EAPOL
 212         int aka = 0, sim = 0, type;
 213
 214         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 215                 return 0;
 216
 217         if (ssid->eap.eap_methods == NULL) {
 218                 sim = 1;
 219                 aka = 1;
 220         } else {
 221                 struct eap_method_type *eap = ssid->eap.eap_methods;
 222                 while (eap->vendor != EAP_VENDOR_IETF ||
 223                        eap->method != EAP_TYPE_NONE) {
 224                         if (eap->vendor == EAP_VENDOR_IETF) {
 225                                 if (eap->method == EAP_TYPE_SIM)
 226                                         sim = 1;
 227                                 else if (eap->method == EAP_TYPE_AKA)
 228                                         aka = 1;
 229                         }
 230                         eap++;
 231                 }
 232         }
 233
 234         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 235                 sim = 0;
 236         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
 237                 aka = 0;
 238
 239         if (!sim && !aka) {
 240                 wpa_printf(MSG_DEBUG, "Selected network is configured to use "
 241                            "SIM, but neither EAP-SIM nor EAP-AKA are enabled");
 242                 return 0;
 243         }
 244
 245         wpa_printf(MSG_DEBUG, "Selected network is configured to use SIM "
 246                    "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 247         if (sim && aka)
 248                 type = SCARD_TRY_BOTH;
 249         else if (aka)
 250                 type = SCARD_USIM_ONLY;
 251         else
 252                 type = SCARD_GSM_SIM_ONLY;
 253
 254         wpa_s->scard = scard_init(type);
 255         if (wpa_s->scard == NULL) {
 256                 wpa_printf(MSG_WARNING, "Failed to initialize SIM "
 257                            "(pcsc-lite)");
 258                 return -1;
 259         }
 260         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 261         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 262 #endif /* IEEE8021X_EAPOL */
 263
 264         return 0;
 265 }
 266
 267
 268 #ifndef CONFIG_NO_SCAN_PROCESSING
 269 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
 270                                         struct wpa_ssid *ssid)
 271 {
 272         int i, privacy = 0;
 273
 274         if (ssid->mixed_cell)
 275                 return 1;
 276
 277 #ifdef CONFIG_WPS
 278         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 279                 return 1;
 280 #endif /* CONFIG_WPS */
 281
 282         for (i = 0; i < NUM_WEP_KEYS; i++) {
 283                 if (ssid->wep_key_len[i]) {
 284                         privacy = 1;
 285                         break;
 286                 }
 287         }
 288 #ifdef IEEE8021X_EAPOL
 289         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 290             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 291                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 292                 privacy = 1;
 293 #endif /* IEEE8021X_EAPOL */
 294
 295         if (bss->caps & IEEE80211_CAP_PRIVACY)
 296                 return privacy;
 297         return !privacy;
 298 }
 299
 300
 301 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 302                                          struct wpa_ssid *ssid,
 303                                          struct wpa_scan_res *bss)
 304 {
 305         struct wpa_ie_data ie;
 306         int proto_match = 0;
 307         const u8 *rsn_ie, *wpa_ie;
 308         int ret;
 309
 310         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 311         if (ret >= 0)
 312                 return ret;
 313
 314         rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 315         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 316                 proto_match++;
 317
 318                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 319                         wpa_printf(MSG_DEBUG, "   skip RSN IE - parse failed");
 320                         break;
 321                 }
 322                 if (!(ie.proto & ssid->proto)) {
 323                         wpa_printf(MSG_DEBUG, "   skip RSN IE - proto "
 324                                    "mismatch");
 325                         break;
 326                 }
 327
 328                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 329                         wpa_printf(MSG_DEBUG, "   skip RSN IE - PTK cipher "
 330                                    "mismatch");
 331                         break;
 332                 }
 333
 334                 if (!(ie.group_cipher & ssid->group_cipher)) {
 335                         wpa_printf(MSG_DEBUG, "   skip RSN IE - GTK cipher "
 336                                    "mismatch");
 337                         break;
 338                 }
 339
 340                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 341                         wpa_printf(MSG_DEBUG, "   skip RSN IE - key mgmt "
 342                                    "mismatch");
 343                         break;
 344                 }
 345
 346 #ifdef CONFIG_IEEE80211W
 347                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 348                     ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
 349                         wpa_printf(MSG_DEBUG, "   skip RSN IE - no mgmt frame "
 350                                    "protection");
 351                         break;
 352                 }
 353 #endif /* CONFIG_IEEE80211W */
 354
 355                 wpa_printf(MSG_DEBUG, "   selected based on RSN IE");
 356                 return 1;
 357         }
 358
 359         wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 360         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 361                 proto_match++;
 362
 363                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 364                         wpa_printf(MSG_DEBUG, "   skip WPA IE - parse failed");
 365                         break;
 366                 }
 367                 if (!(ie.proto & ssid->proto)) {
 368                         wpa_printf(MSG_DEBUG, "   skip WPA IE - proto "
 369                                    "mismatch");
 370                         break;
 371                 }
 372
 373                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 374                         wpa_printf(MSG_DEBUG, "   skip WPA IE - PTK cipher "
 375                                    "mismatch");
 376                         break;
 377                 }
 378
 379                 if (!(ie.group_cipher & ssid->group_cipher)) {
 380                         wpa_printf(MSG_DEBUG, "   skip WPA IE - GTK cipher "
 381                                    "mismatch");
 382                         break;
 383                 }
 384
 385                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 386                         wpa_printf(MSG_DEBUG, "   skip WPA IE - key mgmt "
 387                                    "mismatch");
 388                         break;
 389                 }
 390
 391                 wpa_printf(MSG_DEBUG, "   selected based on WPA IE");
 392                 return 1;
 393         }
 394
 395         if (proto_match == 0)
 396                 wpa_printf(MSG_DEBUG, "   skip - no WPA/RSN proto match");
 397
 398         return 0;
 399 }
 400
 401
 402 static int freq_allowed(int *freqs, int freq)
 403 {
 404         int i;
 405
 406         if (freqs == NULL)
 407                 return 1;
 408
 409         for (i = 0; freqs[i]; i++)
 410                 if (freqs[i] == freq)
 411                         return 1;
 412         return 0;
 413 }
 414
 415
 416 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 417                                             int i, struct wpa_scan_res *bss,
 418                                             struct wpa_ssid *group)
 419 {
 420         const u8 *ssid_;
 421         u8 wpa_ie_len, rsn_ie_len, ssid_len;
 422         int wpa;
 423         struct wpa_blacklist *e;
 424         const u8 *ie;
 425         struct wpa_ssid *ssid;
 426
 427         ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 428         ssid_ = ie ? ie + 2 : (u8 *) "";
 429         ssid_len = ie ? ie[1] : 0;
 430
 431         ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 432         wpa_ie_len = ie ? ie[1] : 0;
 433
 434         ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 435         rsn_ie_len = ie ? ie[1] : 0;
 436
 437         wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 438                    "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
 439                    i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
 440                    wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 441                    wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ?
 442                    " wps" : "");
 443
 444         e = wpa_blacklist_get(wpa_s, bss->bssid);
 445         if (e && e->count > 1) {
 446                 wpa_printf(MSG_DEBUG, "   skip - blacklisted");
 447                 return 0;
 448         }
 449
 450         if (ssid_len == 0) {
 451                 wpa_printf(MSG_DEBUG, "   skip - SSID not known");
 452                 return 0;
 453         }
 454
 455         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 456
 457         for (ssid = group; ssid; ssid = ssid->pnext) {
 458                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 459
 460                 if (ssid->disabled) {
 461                         wpa_printf(MSG_DEBUG, "   skip - disabled");
 462                         continue;
 463                 }
 464
 465 #ifdef CONFIG_WPS
 466                 if (wpa && ssid->ssid_len == 0 &&
 467                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 468                         check_ssid = 0;
 469
 470                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 471                         /* Only allow wildcard SSID match if an AP
 472                          * advertises active WPS operation that matches
 473                          * with our mode. */
 474                         check_ssid = 1;
 475                         if (ssid->ssid_len == 0 &&
 476                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 477                                 check_ssid = 0;
 478                 }
 479 #endif /* CONFIG_WPS */
 480
 481                 if (check_ssid &&
 482                     (ssid_len != ssid->ssid_len ||
 483                      os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
 484                         wpa_printf(MSG_DEBUG, "   skip - SSID mismatch");
 485                         continue;
 486                 }
 487
 488                 if (ssid->bssid_set &&
 489                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 490                         wpa_printf(MSG_DEBUG, "   skip - BSSID mismatch");
 491                         continue;
 492                 }
 493
 494                 if (wpa && !wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 495                         continue;
 496
 497                 if (!wpa &&
 498                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 499                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 500                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 501                         wpa_printf(MSG_DEBUG, "   skip - non-WPA network not "
 502                                    "allowed");
 503                         continue;
 504                 }
 505
 506                 if (!wpa && !wpa_supplicant_match_privacy(bss, ssid)) {
 507                         wpa_printf(MSG_DEBUG, "   skip - privacy mismatch");
 508                         continue;
 509                 }
 510
 511                 if (!wpa && (bss->caps & IEEE80211_CAP_IBSS)) {
 512                         wpa_printf(MSG_DEBUG, "   skip - IBSS (adhoc) "
 513                                    "network");
 514                         continue;
 515                 }
 516
 517                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 518                         wpa_printf(MSG_DEBUG, "   skip - frequency not "
 519                                    "allowed");
 520                         continue;
 521                 }
 522
 523 #ifdef CONFIG_P2P
 524                 /*
 525                  * TODO: skip the AP if its P2P IE has Group Formation
 526                  * bit set in the P2P Group Capability Bitmap and we
 527                  * are not in Group Formation with that device.
 528                  */
 529 #endif /* CONFIG_P2P */
 530
 531                 /* Matching configuration found */
 532                 return ssid;
 533         }
 534
 535         /* No matching configuration found */
 536         return 0;
 537 }
 538
 539
 540 static struct wpa_bss *
 541 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 542                           struct wpa_scan_results *scan_res,
 543                           struct wpa_ssid *group,
 544                           struct wpa_ssid **selected_ssid)
 545 {
 546         size_t i;
 547
 548         wpa_printf(MSG_DEBUG, "Selecting BSS from priority group %d",
 549                    group->priority);
 550
 551         for (i = 0; i < scan_res->num; i++) {
 552                 struct wpa_scan_res *bss = scan_res->res[i];
 553                 const u8 *ie, *ssid;
 554                 u8 ssid_len;
 555
 556                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
 557                 if (!*selected_ssid)
 558                         continue;
 559
 560                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 561                 ssid = ie ? ie + 2 : (u8 *) "";
 562                 ssid_len = ie ? ie[1] : 0;
 563
 564                 wpa_printf(MSG_DEBUG, "   selected BSS " MACSTR " ssid='%s'",
 565                            MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
 566                 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
 567         }
 568
 569         return NULL;
 570 }
 571
 572
 573 static struct wpa_bss *
 574 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 575                             struct wpa_scan_results *scan_res,
 576                             struct wpa_ssid **selected_ssid)
 577 {
 578         struct wpa_bss *selected = NULL;
 579         int prio;
 580
 581         while (selected == NULL) {
 582                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 583                         selected = wpa_supplicant_select_bss(
 584                                 wpa_s, scan_res, wpa_s->conf->pssid[prio],
 585                                 selected_ssid);
 586                         if (selected)
 587                                 break;
 588                 }
 589
 590                 if (selected == NULL && wpa_s->blacklist) {
 591                         wpa_printf(MSG_DEBUG, "No APs found - clear blacklist "
 592                                    "and try again");
 593                         wpa_blacklist_clear(wpa_s);
 594                         wpa_s->blacklist_cleared++;
 595                 } else if (selected == NULL)
 596                         break;
 597         }
 598
 599         return selected;
 600 }
 601
 602
 603 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 604                                         int timeout_sec, int timeout_usec)
 605 {
 606         if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
 607                 /*
 608                  * No networks are enabled; short-circuit request so
 609                  * we don't wait timeout seconds before transitioning
 610                  * to INACTIVE state.
 611                  */
 612                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 613                 return;
 614         }
 615         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 616 }
 617
 618
 619 void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 620                             struct wpa_bss *selected,
 621                             struct wpa_ssid *ssid)
 622 {
 623         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 624                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 625                         "PBC session overlap");
 626 #ifdef CONFIG_P2P
 627                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
 628                         return;
 629 #endif /* CONFIG_P2P */
 630                 wpas_wps_cancel(wpa_s);
 631                 return;
 632         }
 633
 634         /*
 635          * Do not trigger new association unless the BSSID has changed or if
 636          * reassociation is requested. If we are in process of associating with
 637          * the selected BSSID, do not trigger new attempt.
 638          */
 639         if (wpa_s->reassociate ||
 640             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 641              (wpa_s->wpa_state != WPA_ASSOCIATING ||
 642               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 643               0))) {
 644                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 645                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 646                         return;
 647                 }
 648                 wpa_supplicant_associate(wpa_s, selected, ssid);
 649         } else {
 650                 wpa_printf(MSG_DEBUG, "Already associated with the selected "
 651                            "AP");
 652         }
 653 }
 654
 655
 656 static struct wpa_ssid *
 657 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 658 {
 659         int prio;
 660         struct wpa_ssid *ssid;
 661
 662         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 663                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 664                 {
 665                         if (ssid->disabled)
 666                                 continue;
 667                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 668                             ssid->mode == IEEE80211_MODE_AP)
 669                                 return ssid;
 670                 }
 671         }
 672         return NULL;
 673 }
 674
 675
 676 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 677  * on BSS added and BSS changed events */
 678 static void wpa_supplicant_rsn_preauth_scan_results(
 679         struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res)
 680 {
 681         int i;
 682
 683         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 684                 return;
 685
 686         for (i = scan_res->num - 1; i >= 0; i--) {
 687                 const u8 *ssid, *rsn;
 688                 struct wpa_scan_res *r;
 689
 690                 r = scan_res->res[i];
 691
 692                 ssid = wpa_scan_get_ie(r, WLAN_EID_SSID);
 693                 if (ssid == NULL)
 694                         continue;
 695
 696                 rsn = wpa_scan_get_ie(r, WLAN_EID_RSN);
 697                 if (rsn == NULL)
 698                         continue;
 699
 700                 rsn_preauth_scan_result(wpa_s->wpa, r->bssid, ssid, rsn);
 701         }
 702
 703 }
 704
 705
 706 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
 707                                        struct wpa_bss *selected,
 708                                        struct wpa_ssid *ssid,
 709                                        struct wpa_scan_results *scan_res)
 710 {
 711         size_t i;
 712         struct wpa_scan_res *current_bss = NULL;
 713         int min_diff;
 714
 715         if (wpa_s->reassociate)
 716                 return 1; /* explicit request to reassociate */
 717         if (wpa_s->wpa_state < WPA_ASSOCIATED)
 718                 return 1; /* we are not associated; continue */
 719         if (wpa_s->current_ssid == NULL)
 720                 return 1; /* unknown current SSID */
 721         if (wpa_s->current_ssid != ssid)
 722                 return 1; /* different network block */
 723
 724         for (i = 0; i < scan_res->num; i++) {
 725                 struct wpa_scan_res *res = scan_res->res[i];
 726                 const u8 *ie;
 727                 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
 728                         continue;
 729
 730                 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 731                 if (ie == NULL)
 732                         continue;
 733                 if (ie[1] != wpa_s->current_ssid->ssid_len ||
 734                     os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
 735                         continue;
 736                 current_bss = res;
 737                 break;
 738         }
 739
 740         if (!current_bss)
 741                 return 1; /* current BSS not seen in scan results */
 742
 743         wpa_printf(MSG_DEBUG, "Considering within-ESS reassociation");
 744         wpa_printf(MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
 745                    MAC2STR(current_bss->bssid), current_bss->level);
 746         wpa_printf(MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
 747                    MAC2STR(selected->bssid), selected->level);
 748
 749         if (wpa_s->current_ssid->bssid_set &&
 750             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
 751             0) {
 752                 wpa_printf(MSG_DEBUG, "Allow reassociation - selected BSS has "
 753                            "preferred BSSID");
 754                 return 1;
 755         }
 756
 757         min_diff = 2;
 758         if (current_bss->level < 0) {
 759                 if (current_bss->level < -85)
 760                         min_diff = 1;
 761                 else if (current_bss->level < -80)
 762                         min_diff = 2;
 763                 else if (current_bss->level < -75)
 764                         min_diff = 3;
 765                 else if (current_bss->level < -70)
 766                         min_diff = 4;
 767                 else
 768                         min_diff = 5;
 769         }
 770         if (abs(current_bss->level - selected->level) < min_diff) {
 771                 wpa_printf(MSG_DEBUG, "Skip roam - too small difference in "
 772                            "signal level");
 773                 return 0;
 774         }
 775
 776         return 1;
 777 }
 778
 779
 780 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 781                                               union wpa_event_data *data)
 782 {
 783         struct wpa_bss *selected;
 784         struct wpa_ssid *ssid = NULL;
 785         struct wpa_scan_results *scan_res;
 786         int ap = 0;
 787
 788 #ifdef CONFIG_AP
 789         if (wpa_s->ap_iface)
 790                 ap = 1;
 791 #endif /* CONFIG_AP */
 792
 793         wpa_supplicant_notify_scanning(wpa_s, 0);
 794
 795         scan_res = wpa_supplicant_get_scan_results(wpa_s,
 796                                                    data ? &data->scan_info :
 797                                                    NULL, 1);
 798         if (scan_res == NULL) {
 799                 if (wpa_s->conf->ap_scan == 2 || ap)
 800                         return;
 801                 wpa_printf(MSG_DEBUG, "Failed to get scan results - try "
 802                            "scanning again");
 803                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
 804                 return;
 805         }
 806
 807         if (wpa_s->scan_res_handler) {
 808                 wpa_s->scan_res_handler(wpa_s, scan_res);
 809                 wpa_s->scan_res_handler = NULL;
 810                 wpa_scan_results_free(scan_res);
 811                 return;
 812         }
 813
 814         if (ap) {
 815                 wpa_printf(MSG_DEBUG, "Ignore scan results in AP mode");
 816                 wpa_scan_results_free(scan_res);
 817                 return;
 818         }
 819
 820         wpa_printf(MSG_DEBUG, "New scan results available");
 821         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
 822         wpas_notify_scan_results(wpa_s);
 823
 824         wpas_notify_scan_done(wpa_s, 1);
 825
 826         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
 827                 wpa_scan_results_free(scan_res);
 828                 return;
 829         }
 830
 831         if (wpa_s->disconnected) {
 832                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 833                 wpa_scan_results_free(scan_res);
 834                 return;
 835         }
 836
 837         if (bgscan_notify_scan(wpa_s, scan_res) == 1) {
 838                 wpa_scan_results_free(scan_res);
 839                 return;
 840         }
 841
 842         wpa_supplicant_rsn_preauth_scan_results(wpa_s, scan_res);
 843
 844         selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
 845
 846         if (selected) {
 847                 int skip;
 848                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
 849                                                     scan_res);
 850                 wpa_scan_results_free(scan_res);
 851                 if (skip)
 852                         return;
 853                 wpa_supplicant_connect(wpa_s, selected, ssid);
 854         } else {
 855                 wpa_scan_results_free(scan_res);
 856                 wpa_printf(MSG_DEBUG, "No suitable network found");
 857                 ssid = wpa_supplicant_pick_new_network(wpa_s);
 858                 if (ssid) {
 859                         wpa_printf(MSG_DEBUG, "Setup a new network");
 860                         wpa_supplicant_associate(wpa_s, NULL, ssid);
 861                 } else {
 862                         int timeout_sec = 5;
 863                         int timeout_usec = 0;
 864 #ifdef CONFIG_P2P
 865                         if (wpa_s->p2p_in_provisioning) {
 866                                 /*
 867                                  * Use shorter wait during P2P Provisioning
 868                                  * state to speed up group formation.
 869                                  */
 870                                 timeout_sec = 0;
 871                                 timeout_usec = 250000;
 872                         }
 873 #endif /* CONFIG_P2P */
 874                         wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
 875                                                     timeout_usec);
 876                 }
 877         }
 878 }
 879 #endif /* CONFIG_NO_SCAN_PROCESSING */
 880
 881
 882 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
 883                                           union wpa_event_data *data)
 884 {
 885         int l, len, found = 0, wpa_found, rsn_found;
 886         const u8 *p;
 887
 888         wpa_printf(MSG_DEBUG, "Association info event");
 889         if (data->assoc_info.req_ies)
 890                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
 891                             data->assoc_info.req_ies_len);
 892         if (data->assoc_info.resp_ies)
 893                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
 894                             data->assoc_info.resp_ies_len);
 895         if (data->assoc_info.beacon_ies)
 896                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
 897                             data->assoc_info.beacon_ies,
 898                             data->assoc_info.beacon_ies_len);
 899         if (data->assoc_info.freq)
 900                 wpa_printf(MSG_DEBUG, "freq=%u MHz", data->assoc_info.freq);
 901
 902         p = data->assoc_info.req_ies;
 903         l = data->assoc_info.req_ies_len;
 904
 905         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
 906         while (p && l >= 2) {
 907                 len = p[1] + 2;
 908                 if (len > l) {
 909                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
 910                                     p, l);
 911                         break;
 912                 }
 913                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
 914                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
 915                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
 916                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
 917                                 break;
 918                         found = 1;
 919                         wpa_find_assoc_pmkid(wpa_s);
 920                         break;
 921                 }
 922                 l -= len;
 923                 p += len;
 924         }
 925         if (!found && data->assoc_info.req_ies)
 926                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 927
 928 #ifdef CONFIG_IEEE80211R
 929 #ifdef CONFIG_SME
 930         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
 931                 u8 bssid[ETH_ALEN];
 932                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
 933                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
 934                                                  data->assoc_info.resp_ies,
 935                                                  data->assoc_info.resp_ies_len,
 936                                                  bssid) < 0) {
 937                         wpa_printf(MSG_DEBUG, "FT: Validation of "
 938                                    "Reassociation Response failed");
 939                         wpa_supplicant_deauthenticate(
 940                                 wpa_s, WLAN_REASON_INVALID_IE);
 941                         return -1;
 942                 }
 943         }
 944
 945         p = data->assoc_info.resp_ies;
 946         l = data->assoc_info.resp_ies_len;
 947
 948 #ifdef CONFIG_WPS_STRICT
 949         if (wpa_s->current_ssid &&
 950             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
 951                 struct wpabuf *wps;
 952                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
 953                 if (wps == NULL) {
 954                         wpa_printf(MSG_INFO, "WPS-STRICT: AP did not include "
 955                                    "WPS IE in (Re)Association Response");
 956                         return -1;
 957                 }
 958
 959                 if (wps_validate_assoc_resp(wps) < 0) {
 960                         wpabuf_free(wps);
 961                         wpa_supplicant_deauthenticate(
 962                                 wpa_s, WLAN_REASON_INVALID_IE);
 963                         return -1;
 964                 }
 965                 wpabuf_free(wps);
 966         }
 967 #endif /* CONFIG_WPS_STRICT */
 968
 969         /* Go through the IEs and make a copy of the MDIE, if present. */
 970         while (p && l >= 2) {
 971                 len = p[1] + 2;
 972                 if (len > l) {
 973                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
 974                                     p, l);
 975                         break;
 976                 }
 977                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
 978                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
 979                         wpa_s->sme.ft_used = 1;
 980                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
 981                                   MOBILITY_DOMAIN_ID_LEN);
 982                         break;
 983                 }
 984                 l -= len;
 985                 p += len;
 986         }
 987 #endif /* CONFIG_SME */
 988
 989         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
 990                              data->assoc_info.resp_ies_len);
 991 #endif /* CONFIG_IEEE80211R */
 992
 993         /* WPA/RSN IE from Beacon/ProbeResp */
 994         p = data->assoc_info.beacon_ies;
 995         l = data->assoc_info.beacon_ies_len;
 996
 997         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
 998          */
 999         wpa_found = rsn_found = 0;
1000         while (p && l >= 2) {
1001                 len = p[1] + 2;
1002                 if (len > l) {
1003                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1004                                     p, l);
1005                         break;
1006                 }
1007                 if (!wpa_found &&
1008                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1009                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1010                         wpa_found = 1;
1011                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1012                 }
1013
1014                 if (!rsn_found &&
1015                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1016                         rsn_found = 1;
1017                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1018                 }
1019
1020                 l -= len;
1021                 p += len;
1022         }
1023
1024         if (!wpa_found && data->assoc_info.beacon_ies)
1025                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1026         if (!rsn_found && data->assoc_info.beacon_ies)
1027                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1028         if (wpa_found || rsn_found)
1029                 wpa_s->ap_ies_from_associnfo = 1;
1030
1031         wpa_s->assoc_freq = data->assoc_info.freq;
1032
1033         return 0;
1034 }
1035
1036
1037 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1038                                        union wpa_event_data *data)
1039 {
1040         u8 bssid[ETH_ALEN];
1041         int ft_completed;
1042         int bssid_changed;
1043         struct wpa_driver_capa capa;
1044
1045 #ifdef CONFIG_AP
1046         if (wpa_s->ap_iface) {
1047                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1048                                     data->assoc_info.addr,
1049                                     data->assoc_info.req_ies,
1050                                     data->assoc_info.req_ies_len);
1051                 return;
1052         }
1053 #endif /* CONFIG_AP */
1054
1055         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1056         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1057                 return;
1058
1059         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1060         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1061                 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1062         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
1063             (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1064              os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
1065                 wpa_msg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1066                         MACSTR, MAC2STR(bssid));
1067                 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1068                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1069                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1070                 if (bssid_changed)
1071                         wpas_notify_bssid_changed(wpa_s);
1072
1073                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1074                         wpa_clear_keys(wpa_s, bssid);
1075                 }
1076                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1077                         wpa_supplicant_disassociate(
1078                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1079                         return;
1080                 }
1081                 if (wpa_s->current_ssid) {
1082                         struct wpa_bss *bss = NULL;
1083                         struct wpa_ssid *ssid = wpa_s->current_ssid;
1084                         if (ssid->ssid_len > 0)
1085                                 bss = wpa_bss_get(wpa_s, bssid,
1086                                                   ssid->ssid, ssid->ssid_len);
1087                         if (!bss)
1088                                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1089                         if (bss)
1090                                 wpa_s->current_bss = bss;
1091                 }
1092         }
1093
1094 #ifdef CONFIG_SME
1095         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1096         wpa_s->sme.prev_bssid_set = 1;
1097 #endif /* CONFIG_SME */
1098
1099         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1100         if (wpa_s->current_ssid) {
1101                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1102                  * initialized before association, but for other modes,
1103                  * initialize PC/SC here, if the current configuration needs
1104                  * smartcard or SIM/USIM. */
1105                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1106         }
1107         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1108         if (wpa_s->l2)
1109                 l2_packet_notify_auth_start(wpa_s->l2);
1110
1111         /*
1112          * Set portEnabled first to FALSE in order to get EAP state machine out
1113          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1114          * state machine may transit to AUTHENTICATING state based on obsolete
1115          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1116          * AUTHENTICATED without ever giving chance to EAP state machine to
1117          * reset the state.
1118          */
1119         if (!ft_completed) {
1120                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1121                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1122         }
1123         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1124                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1125         /* 802.1X::portControl = Auto */
1126         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1127         wpa_s->eapol_received = 0;
1128         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1129             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1130             (wpa_s->current_ssid &&
1131              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1132                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1133                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1134         } else if (!ft_completed) {
1135                 /* Timeout for receiving the first EAPOL packet */
1136                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1137         }
1138         wpa_supplicant_cancel_scan(wpa_s);
1139
1140         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1141             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1142                 /*
1143                  * We are done; the driver will take care of RSN 4-way
1144                  * handshake.
1145                  */
1146                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1147                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1148                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1149                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1150         }
1151
1152         if (wpa_s->pending_eapol_rx) {
1153                 struct os_time now, age;
1154                 os_get_time(&now);
1155                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1156                 if (age.sec == 0 && age.usec < 100000 &&
1157                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1158                     0) {
1159                         wpa_printf(MSG_DEBUG, "Process pending EAPOL frame "
1160                                    "that was received just before association "
1161                                    "notification");
1162                         wpa_supplicant_rx_eapol(
1163                                 wpa_s, wpa_s->pending_eapol_rx_src,
1164                                 wpabuf_head(wpa_s->pending_eapol_rx),
1165                                 wpabuf_len(wpa_s->pending_eapol_rx));
1166                 }
1167                 wpabuf_free(wpa_s->pending_eapol_rx);
1168                 wpa_s->pending_eapol_rx = NULL;
1169         }
1170
1171 #ifdef CONFIG_BGSCAN
1172         if (wpa_s->current_ssid != wpa_s->bgscan_ssid) {
1173                 bgscan_deinit(wpa_s);
1174                 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
1175                         if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
1176                                 wpa_printf(MSG_DEBUG, "Failed to initialize "
1177                                            "bgscan");
1178                                 /*
1179                                  * Live without bgscan; it is only used as a
1180                                  * roaming optimization, so the initial
1181                                  * connection is not affected.
1182                                  */
1183                         } else
1184                                 wpa_s->bgscan_ssid = wpa_s->current_ssid;
1185                 } else
1186                         wpa_s->bgscan_ssid = NULL;
1187         }
1188 #endif /* CONFIG_BGSCAN */
1189
1190         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1191              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1192             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1193             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1194                 /* Set static WEP keys again */
1195                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1196         }
1197 }
1198
1199
1200 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1201                                           u16 reason_code)
1202 {
1203         const u8 *bssid;
1204 #ifdef CONFIG_SME
1205         int authenticating;
1206         u8 prev_pending_bssid[ETH_ALEN];
1207
1208         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1209         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1210 #endif /* CONFIG_SME */
1211
1212         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1213                 /*
1214                  * At least Host AP driver and a Prism3 card seemed to be
1215                  * generating streams of disconnected events when configuring
1216                  * IBSS for WPA-None. Ignore them for now.
1217                  */
1218                 wpa_printf(MSG_DEBUG, "Disconnect event - ignore in "
1219                            "IBSS/WPA-None mode");
1220                 return;
1221         }
1222
1223         if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1224             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1225                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1226                         "pre-shared key may be incorrect");
1227         }
1228         if (!wpa_s->auto_reconnect_disabled ||
1229             wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1230                 wpa_printf(MSG_DEBUG, "WPA: Auto connect enabled: try to "
1231                            "reconnect (wps=%d)",
1232                            wpa_s->key_mgmt == WPA_KEY_MGMT_WPS);
1233                 if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1234                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1235         } else {
1236                 wpa_printf(MSG_DEBUG, "WPA: Auto connect disabled: do not try "
1237                            "to re-connect");
1238                 wpa_s->reassociate = 0;
1239                 wpa_s->disconnected = 1;
1240         }
1241         bssid = wpa_s->bssid;
1242         if (is_zero_ether_addr(bssid))
1243                 bssid = wpa_s->pending_bssid;
1244         wpa_blacklist_add(wpa_s, bssid);
1245         wpa_sm_notify_disassoc(wpa_s->wpa);
1246         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1247                 " reason=%d",
1248                 MAC2STR(bssid), reason_code);
1249         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1250                 wpa_printf(MSG_DEBUG, "Disconnect event - remove keys");
1251                 wpa_s->keys_cleared = 0;
1252                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1253         }
1254         wpa_supplicant_mark_disassoc(wpa_s);
1255         bgscan_deinit(wpa_s);
1256         wpa_s->bgscan_ssid = NULL;
1257 #ifdef CONFIG_SME
1258         if (authenticating &&
1259             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
1260                 /*
1261                  * mac80211-workaround to force deauth on failed auth cmd,
1262                  * requires us to remain in authenticating state to allow the
1263                  * second authentication attempt to be continued properly.
1264                  */
1265                 wpa_printf(MSG_DEBUG, "SME: Allow pending authentication to "
1266                            "proceed after disconnection event");
1267                 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1268                 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1269         }
1270 #endif /* CONFIG_SME */
1271 }
1272
1273
1274 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1275 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
1276                                                     void *sock_ctx)
1277 {
1278         struct wpa_supplicant *wpa_s = eloop_ctx;
1279
1280         if (!wpa_s->pending_mic_error_report)
1281                 return;
1282
1283         wpa_printf(MSG_DEBUG, "WPA: Sending pending MIC error report");
1284         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1285         wpa_s->pending_mic_error_report = 0;
1286 }
1287 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1288
1289
1290 static void
1291 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1292                                          union wpa_event_data *data)
1293 {
1294         int pairwise;
1295         struct os_time t;
1296
1297         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1298         pairwise = (data && data->michael_mic_failure.unicast);
1299         os_get_time(&t);
1300         if ((wpa_s->last_michael_mic_error &&
1301              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1302             wpa_s->pending_mic_error_report) {
1303                 if (wpa_s->pending_mic_error_report) {
1304                         /*
1305                          * Send the pending MIC error report immediately since
1306                          * we are going to start countermeasures and AP better
1307                          * do the same.
1308                          */
1309                         wpa_sm_key_request(wpa_s->wpa, 1,
1310                                            wpa_s->pending_mic_error_pairwise);
1311                 }
1312
1313                 /* Send the new MIC error report immediately since we are going
1314                  * to start countermeasures and AP better do the same.
1315                  */
1316                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1317
1318                 /* initialize countermeasures */
1319                 wpa_s->countermeasures = 1;
1320                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1321
1322                 /*
1323                  * Need to wait for completion of request frame. We do not get
1324                  * any callback for the message completion, so just wait a
1325                  * short while and hope for the best. */
1326                 os_sleep(0, 10000);
1327
1328                 wpa_drv_set_countermeasures(wpa_s, 1);
1329                 wpa_supplicant_deauthenticate(wpa_s,
1330                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
1331                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1332                                      wpa_s, NULL);
1333                 eloop_register_timeout(60, 0,
1334                                        wpa_supplicant_stop_countermeasures,
1335                                        wpa_s, NULL);
1336                 /* TODO: mark the AP rejected for 60 second. STA is
1337                  * allowed to associate with another AP.. */
1338         } else {
1339 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1340                 if (wpa_s->mic_errors_seen) {
1341                         /*
1342                          * Reduce the effectiveness of Michael MIC error
1343                          * reports as a means for attacking against TKIP if
1344                          * more than one MIC failure is noticed with the same
1345                          * PTK. We delay the transmission of the reports by a
1346                          * random time between 0 and 60 seconds in order to
1347                          * force the attacker wait 60 seconds before getting
1348                          * the information on whether a frame resulted in a MIC
1349                          * failure.
1350                          */
1351                         u8 rval[4];
1352                         int sec;
1353
1354                         if (os_get_random(rval, sizeof(rval)) < 0)
1355                                 sec = os_random() % 60;
1356                         else
1357                                 sec = WPA_GET_BE32(rval) % 60;
1358                         wpa_printf(MSG_DEBUG, "WPA: Delay MIC error report %d "
1359                                    "seconds", sec);
1360                         wpa_s->pending_mic_error_report = 1;
1361                         wpa_s->pending_mic_error_pairwise = pairwise;
1362                         eloop_cancel_timeout(
1363                                 wpa_supplicant_delayed_mic_error_report,
1364                                 wpa_s, NULL);
1365                         eloop_register_timeout(
1366                                 sec, os_random() % 1000000,
1367                                 wpa_supplicant_delayed_mic_error_report,
1368                                 wpa_s, NULL);
1369                 } else {
1370                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1371                 }
1372 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1373                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1374 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1375         }
1376         wpa_s->last_michael_mic_error = t.sec;
1377         wpa_s->mic_errors_seen++;
1378 }
1379
1380
1381 #ifdef CONFIG_TERMINATE_ONLASTIF
1382 static int any_interfaces(struct wpa_supplicant *head)
1383 {
1384         struct wpa_supplicant *wpa_s;
1385
1386         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1387                 if (!wpa_s->interface_removed)
1388                         return 1;
1389         return 0;
1390 }
1391 #endif /* CONFIG_TERMINATE_ONLASTIF */
1392
1393
1394 static void
1395 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1396                                       union wpa_event_data *data)
1397 {
1398         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1399                 return;
1400
1401         switch (data->interface_status.ievent) {
1402         case EVENT_INTERFACE_ADDED:
1403                 if (!wpa_s->interface_removed)
1404                         break;
1405                 wpa_s->interface_removed = 0;
1406                 wpa_printf(MSG_DEBUG, "Configured interface was added.");
1407                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1408                         wpa_printf(MSG_INFO, "Failed to initialize the driver "
1409                                    "after interface was added.");
1410                 }
1411                 break;
1412         case EVENT_INTERFACE_REMOVED:
1413                 wpa_printf(MSG_DEBUG, "Configured interface was removed.");
1414                 wpa_s->interface_removed = 1;
1415                 wpa_supplicant_mark_disassoc(wpa_s);
1416                 l2_packet_deinit(wpa_s->l2);
1417                 wpa_s->l2 = NULL;
1418 #ifdef CONFIG_TERMINATE_ONLASTIF
1419                 /* check if last interface */
1420                 if (!any_interfaces(wpa_s->global->ifaces))
1421                         eloop_terminate();
1422 #endif /* CONFIG_TERMINATE_ONLASTIF */
1423                 break;
1424         }
1425 }
1426
1427
1428 #ifdef CONFIG_PEERKEY
1429 static void
1430 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1431                               union wpa_event_data *data)
1432 {
1433         if (data == NULL)
1434                 return;
1435         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1436 }
1437 #endif /* CONFIG_PEERKEY */
1438
1439
1440 #ifdef CONFIG_IEEE80211R
1441 static void
1442 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1443                                  union wpa_event_data *data)
1444 {
1445         if (data == NULL)
1446                 return;
1447
1448         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1449                                     data->ft_ies.ies_len,
1450                                     data->ft_ies.ft_action,
1451                                     data->ft_ies.target_ap,
1452                                     data->ft_ies.ric_ies,
1453                                     data->ft_ies.ric_ies_len) < 0) {
1454                 /* TODO: prevent MLME/driver from trying to associate? */
1455         }
1456 }
1457 #endif /* CONFIG_IEEE80211R */
1458
1459
1460 #ifdef CONFIG_IBSS_RSN
1461 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1462                                                 union wpa_event_data *data)
1463 {
1464         if (data == NULL)
1465                 return;
1466         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1467 }
1468 #endif /* CONFIG_IBSS_RSN */
1469
1470
1471 #ifdef CONFIG_IEEE80211R
1472 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1473                          size_t len)
1474 {
1475         const u8 *sta_addr, *target_ap_addr;
1476         u16 status;
1477
1478         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1479         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1480                 return; /* only SME case supported for now */
1481         if (len < 1 + 2 * ETH_ALEN + 2)
1482                 return;
1483         if (data[0] != 2)
1484                 return; /* Only FT Action Response is supported for now */
1485         sta_addr = data + 1;
1486         target_ap_addr = data + 1 + ETH_ALEN;
1487         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1488         wpa_printf(MSG_DEBUG, "FT: Received FT Action Response: STA " MACSTR
1489                    " TargetAP " MACSTR " status %u",
1490                    MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1491
1492         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1493                 wpa_printf(MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1494                            " in FT Action Response", MAC2STR(sta_addr));
1495                 return;
1496         }
1497
1498         if (status) {
1499                 wpa_printf(MSG_DEBUG, "FT: FT Action Response indicates "
1500                            "failure (status code %d)", status);
1501                 /* TODO: report error to FT code(?) */
1502                 return;
1503         }
1504
1505         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1506                                     len - (1 + 2 * ETH_ALEN + 2), 1,
1507                                     target_ap_addr, NULL, 0) < 0)
1508                 return;
1509
1510 #ifdef CONFIG_SME
1511         {
1512                 struct wpa_bss *bss;
1513                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1514                 if (bss)
1515                         wpa_s->sme.freq = bss->freq;
1516                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1517                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1518                               WLAN_AUTH_FT);
1519         }
1520 #endif /* CONFIG_SME */
1521 }
1522 #endif /* CONFIG_IEEE80211R */
1523
1524
1525 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1526                           union wpa_event_data *data)
1527 {
1528         struct wpa_supplicant *wpa_s = ctx;
1529         u16 reason_code = 0;
1530
1531         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
1532             event != EVENT_INTERFACE_ENABLED &&
1533             event != EVENT_INTERFACE_STATUS) {
1534                 wpa_printf(MSG_DEBUG, "Ignore event %d while interface is "
1535                            "disabled", event);
1536                 return;
1537         }
1538
1539         wpa_printf(MSG_DEBUG, "Event %d received on interface %s",
1540                    event, wpa_s->ifname);
1541
1542         switch (event) {
1543         case EVENT_AUTH:
1544                 sme_event_auth(wpa_s, data);
1545                 break;
1546         case EVENT_ASSOC:
1547                 wpa_supplicant_event_assoc(wpa_s, data);
1548                 break;
1549         case EVENT_DISASSOC:
1550                 wpa_printf(MSG_DEBUG, "Disassociation notification");
1551                 if (data) {
1552                         wpa_printf(MSG_DEBUG, " * reason %u",
1553                                    data->disassoc_info.reason_code);
1554                         if (data->disassoc_info.addr)
1555                                 wpa_printf(MSG_DEBUG, " * address " MACSTR,
1556                                            MAC2STR(data->disassoc_info.addr));
1557                 }
1558 #ifdef CONFIG_AP
1559                 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
1560                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1561                                                data->disassoc_info.addr);
1562                         break;
1563                 }
1564 #endif /* CONFIG_AP */
1565                 if (data) {
1566                         reason_code = data->disassoc_info.reason_code;
1567                         wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
1568                                     data->disassoc_info.ie,
1569                                     data->disassoc_info.ie_len);
1570 #ifdef CONFIG_P2P
1571                         wpas_p2p_disassoc_notif(
1572                                 wpa_s, data->disassoc_info.addr, reason_code,
1573                                 data->disassoc_info.ie,
1574                                 data->disassoc_info.ie_len);
1575 #endif /* CONFIG_P2P */
1576                 }
1577                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1578                         sme_event_disassoc(wpa_s, data);
1579                 /* fall through */
1580         case EVENT_DEAUTH:
1581                 if (event == EVENT_DEAUTH) {
1582                         wpa_printf(MSG_DEBUG, "Deauthentication notification");
1583                         if (data) {
1584                                 reason_code = data->deauth_info.reason_code;
1585                                 wpa_printf(MSG_DEBUG, " * reason %u",
1586                                            data->deauth_info.reason_code);
1587                                 if (data->deauth_info.addr) {
1588                                         wpa_printf(MSG_DEBUG, " * address "
1589                                                    MACSTR,
1590                                                    MAC2STR(data->deauth_info.
1591                                                            addr));
1592                                 }
1593                                 wpa_hexdump(MSG_DEBUG,
1594                                             "Deauthentication frame IE(s)",
1595                                             data->deauth_info.ie,
1596                                             data->deauth_info.ie_len);
1597 #ifdef CONFIG_P2P
1598                                 wpas_p2p_deauth_notif(
1599                                         wpa_s, data->deauth_info.addr,
1600                                         reason_code,
1601                                         data->deauth_info.ie,
1602                                         data->deauth_info.ie_len);
1603 #endif /* CONFIG_P2P */
1604                         }
1605                 }
1606 #ifdef CONFIG_AP
1607                 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
1608                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1609                                                data->deauth_info.addr);
1610                         break;
1611                 }
1612 #endif /* CONFIG_AP */
1613                 wpa_supplicant_event_disassoc(wpa_s, reason_code);
1614                 break;
1615         case EVENT_MICHAEL_MIC_FAILURE:
1616                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
1617                 break;
1618 #ifndef CONFIG_NO_SCAN_PROCESSING
1619         case EVENT_SCAN_RESULTS:
1620                 wpa_supplicant_event_scan_results(wpa_s, data);
1621                 break;
1622 #endif /* CONFIG_NO_SCAN_PROCESSING */
1623         case EVENT_ASSOCINFO:
1624                 wpa_supplicant_event_associnfo(wpa_s, data);
1625                 break;
1626         case EVENT_INTERFACE_STATUS:
1627                 wpa_supplicant_event_interface_status(wpa_s, data);
1628                 break;
1629         case EVENT_PMKID_CANDIDATE:
1630                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
1631                 break;
1632 #ifdef CONFIG_PEERKEY
1633         case EVENT_STKSTART:
1634                 wpa_supplicant_event_stkstart(wpa_s, data);
1635                 break;
1636 #endif /* CONFIG_PEERKEY */
1637 #ifdef CONFIG_IEEE80211R
1638         case EVENT_FT_RESPONSE:
1639                 wpa_supplicant_event_ft_response(wpa_s, data);
1640                 break;
1641 #endif /* CONFIG_IEEE80211R */
1642 #ifdef CONFIG_IBSS_RSN
1643         case EVENT_IBSS_RSN_START:
1644                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
1645                 break;
1646 #endif /* CONFIG_IBSS_RSN */
1647         case EVENT_ASSOC_REJECT:
1648                 sme_event_assoc_reject(wpa_s, data);
1649                 break;
1650         case EVENT_AUTH_TIMED_OUT:
1651                 sme_event_auth_timed_out(wpa_s, data);
1652                 break;
1653         case EVENT_ASSOC_TIMED_OUT:
1654                 sme_event_assoc_timed_out(wpa_s, data);
1655                 break;
1656 #ifdef CONFIG_AP
1657         case EVENT_TX_STATUS:
1658                 wpa_printf(MSG_DEBUG, "EVENT_TX_STATUS on %s dst=" MACSTR
1659                            " type=%d stype=%d pending_dst=" MACSTR,
1660                            wpa_s->ifname, MAC2STR(data->tx_status.dst),
1661                            data->tx_status.type, data->tx_status.stype,
1662                            MAC2STR(wpa_s->parent->pending_action_dst));
1663                 if (wpa_s->ap_iface == NULL) {
1664 #ifdef CONFIG_P2P
1665                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1666                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
1667                                 wpas_send_action_tx_status(
1668                                         wpa_s, data->tx_status.dst,
1669                                         data->tx_status.data,
1670                                         data->tx_status.data_len,
1671                                         data->tx_status.ack);
1672 #endif /* CONFIG_P2P */
1673                         break;
1674                 }
1675 #ifdef CONFIG_P2P
1676                 /*
1677                  * Catch TX status events for Action frames we sent via group
1678                  * interface in GO mode.
1679                  */
1680                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1681                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
1682                     os_memcmp(wpa_s->parent->pending_action_dst,
1683                               data->tx_status.dst, ETH_ALEN) == 0) {
1684                         wpas_send_action_tx_status(
1685                                 wpa_s->parent, data->tx_status.dst,
1686                                 data->tx_status.data,
1687                                 data->tx_status.data_len,
1688                                 data->tx_status.ack);
1689                         break;
1690                 }
1691 #endif /* CONFIG_P2P */
1692                 switch (data->tx_status.type) {
1693                 case WLAN_FC_TYPE_MGMT:
1694                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
1695                                       data->tx_status.data_len,
1696                                       data->tx_status.stype,
1697                                       data->tx_status.ack);
1698                         break;
1699                 case WLAN_FC_TYPE_DATA:
1700                         ap_tx_status(wpa_s, data->tx_status.dst,
1701                                      data->tx_status.data,
1702                                      data->tx_status.data_len,
1703                                      data->tx_status.ack);
1704                         break;
1705                 }
1706                 break;
1707         case EVENT_RX_FROM_UNKNOWN:
1708                 if (wpa_s->ap_iface == NULL)
1709                         break;
1710                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame,
1711                                        data->rx_from_unknown.len);
1712                 break;
1713         case EVENT_RX_MGMT:
1714                 if (wpa_s->ap_iface == NULL) {
1715 #ifdef CONFIG_P2P
1716                         u16 fc, stype;
1717                         const struct ieee80211_mgmt *mgmt;
1718                         mgmt = (const struct ieee80211_mgmt *)
1719                                 data->rx_mgmt.frame;
1720                         fc = le_to_host16(mgmt->frame_control);
1721                         stype = WLAN_FC_GET_STYPE(fc);
1722                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
1723                             data->rx_mgmt.frame_len > 24) {
1724                                 const u8 *src = mgmt->sa;
1725                                 const u8 *ie = mgmt->u.probe_req.variable;
1726                                 size_t ie_len = data->rx_mgmt.frame_len -
1727                                         (mgmt->u.probe_req.variable -
1728                                          data->rx_mgmt.frame);
1729                                 wpas_p2p_probe_req_rx(wpa_s, src, ie, ie_len);
1730                                 break;
1731                         }
1732 #endif /* CONFIG_P2P */
1733                         wpa_printf(MSG_DEBUG, "AP: ignore received management "
1734                                    "frame in non-AP mode");
1735                         break;
1736                 }
1737                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
1738                 break;
1739 #endif /* CONFIG_AP */
1740         case EVENT_RX_ACTION:
1741                 wpa_printf(MSG_DEBUG, "Received Action frame: SA=" MACSTR
1742                            " Category=%u DataLen=%d freq=%d MHz",
1743                            MAC2STR(data->rx_action.sa),
1744                            data->rx_action.category, (int) data->rx_action.len,
1745                            data->rx_action.freq);
1746 #ifdef CONFIG_IEEE80211R
1747                 if (data->rx_action.category == WLAN_ACTION_FT) {
1748                         ft_rx_action(wpa_s, data->rx_action.data,
1749                                      data->rx_action.len);
1750                         break;
1751                 }
1752 #endif /* CONFIG_IEEE80211R */
1753 #ifdef CONFIG_P2P
1754                 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
1755                                    data->rx_action.sa,
1756                                    data->rx_action.bssid,
1757                                    data->rx_action.category,
1758                                    data->rx_action.data,
1759                                    data->rx_action.len, data->rx_action.freq);
1760 #endif /* CONFIG_P2P */
1761                 break;
1762 #ifdef CONFIG_P2P
1763         case EVENT_REMAIN_ON_CHANNEL:
1764                 wpas_p2p_remain_on_channel_cb(
1765                         wpa_s, data->remain_on_channel.freq,
1766                         data->remain_on_channel.duration);
1767                 break;
1768         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
1769                 wpas_p2p_cancel_remain_on_channel_cb(
1770                         wpa_s, data->remain_on_channel.freq);
1771                 break;
1772         case EVENT_RX_PROBE_REQ:
1773                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
1774                                       data->rx_probe_req.ie,
1775                                       data->rx_probe_req.ie_len);
1776                 break;
1777 #endif /* CONFIG_P2P */
1778 #ifdef CONFIG_CLIENT_MLME
1779         case EVENT_MLME_RX: {
1780                 struct ieee80211_rx_status rx_status;
1781                 os_memset(&rx_status, 0, sizeof(rx_status));
1782                 rx_status.freq = data->mlme_rx.freq;
1783                 rx_status.channel = data->mlme_rx.channel;
1784                 rx_status.ssi = data->mlme_rx.ssi;
1785                 ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len,
1786                                  &rx_status);
1787                 break;
1788         }
1789 #endif /* CONFIG_CLIENT_MLME */
1790         case EVENT_EAPOL_RX:
1791                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
1792                                         data->eapol_rx.data,
1793                                         data->eapol_rx.data_len);
1794                 break;
1795         case EVENT_SIGNAL_CHANGE:
1796                 bgscan_notify_signal_change(
1797                         wpa_s, data->signal_change.above_threshold,
1798                         data->signal_change.current_signal);
1799                 break;
1800         case EVENT_INTERFACE_ENABLED:
1801                 wpa_printf(MSG_DEBUG, "Interface was enabled");
1802                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
1803                         wpa_supplicant_set_state(wpa_s,
1804                                                  WPA_DISCONNECTED);
1805                         wpa_supplicant_req_scan(wpa_s, 0, 0);
1806                 }
1807                 break;
1808         case EVENT_INTERFACE_DISABLED:
1809                 wpa_printf(MSG_DEBUG, "Interface was disabled");
1810                 wpa_supplicant_mark_disassoc(wpa_s);
1811                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
1812                 break;
1813         default:
1814                 wpa_printf(MSG_INFO, "Unknown event %d", event);
1815                 break;
1816         }
1817 }