wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2008, 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 "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 "preauth.h"
  27 #include "pmksa_cache.h"
  28 #include "wpa_ctrl.h"
  29 #include "eap_peer/eap.h"
  30 #include "notify.h"
  31 #include "ieee802_11_defs.h"
  32 #include "blacklist.h"
  33 #include "wpas_glue.h"
  34 #include "wps_supplicant.h"
  35 #include "ibss_rsn.h"
  36 #include "sme.h"
  37
  38
  39 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  40 {
  41         struct wpa_ssid *ssid, *old_ssid;
  42
  43         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  44                 return 0;
  45
  46         wpa_printf(MSG_DEBUG, "Select network based on association "
  47                    "information");
  48         ssid = wpa_supplicant_get_ssid(wpa_s);
  49         if (ssid == NULL) {
  50                 wpa_printf(MSG_INFO, "No network configuration found for the "
  51                            "current AP");
  52                 return -1;
  53         }
  54
  55         if (ssid->disabled) {
  56                 wpa_printf(MSG_DEBUG, "Selected network is disabled");
  57                 return -1;
  58         }
  59
  60         wpa_printf(MSG_DEBUG, "Network configuration found for the current "
  61                    "AP");
  62         if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
  63                               WPA_KEY_MGMT_WPA_NONE |
  64                               WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
  65                               WPA_KEY_MGMT_PSK_SHA256 |
  66                               WPA_KEY_MGMT_IEEE8021X_SHA256)) {
  67                 u8 wpa_ie[80];
  68                 size_t wpa_ie_len = sizeof(wpa_ie);
  69                 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
  70                                           wpa_ie, &wpa_ie_len);
  71         } else {
  72                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  73         }
  74
  75         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
  76                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
  77         old_ssid = wpa_s->current_ssid;
  78         wpa_s->current_ssid = ssid;
  79         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
  80         wpa_supplicant_initiate_eapol(wpa_s);
  81         if (old_ssid != wpa_s->current_ssid)
  82                 wpas_notify_network_changed(wpa_s);
  83
  84         return 0;
  85 }
  86
  87
  88 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
  89                                                 void *sock_ctx)
  90 {
  91         struct wpa_supplicant *wpa_s = eloop_ctx;
  92
  93         if (wpa_s->countermeasures) {
  94                 wpa_s->countermeasures = 0;
  95                 wpa_drv_set_countermeasures(wpa_s, 0);
  96                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
  97                 wpa_supplicant_req_scan(wpa_s, 0, 0);
  98         }
  99 }
 100
 101
 102 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 103 {
 104         int bssid_changed;
 105
 106         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 107         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 108         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 109         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 110         if (bssid_changed)
 111                 wpas_notify_bssid_changed(wpa_s);
 112
 113         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 114         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 115         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 116                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 117         wpa_s->ap_ies_from_associnfo = 0;
 118 }
 119
 120
 121 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 122 {
 123         struct wpa_ie_data ie;
 124         int pmksa_set = -1;
 125         size_t i;
 126
 127         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 128             ie.pmkid == NULL)
 129                 return;
 130
 131         for (i = 0; i < ie.num_pmkid; i++) {
 132                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 133                                                     ie.pmkid + i * PMKID_LEN,
 134                                                     NULL, NULL, 0);
 135                 if (pmksa_set == 0) {
 136                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 137                         break;
 138                 }
 139         }
 140
 141         wpa_printf(MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from PMKSA "
 142                    "cache", pmksa_set == 0 ? "" : "not ");
 143 }
 144
 145
 146 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 147                                                  union wpa_event_data *data)
 148 {
 149         if (data == NULL) {
 150                 wpa_printf(MSG_DEBUG, "RSN: No data in PMKID candidate event");
 151                 return;
 152         }
 153         wpa_printf(MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 154                    " index=%d preauth=%d",
 155                    MAC2STR(data->pmkid_candidate.bssid),
 156                    data->pmkid_candidate.index,
 157                    data->pmkid_candidate.preauth);
 158
 159         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 160                             data->pmkid_candidate.index,
 161                             data->pmkid_candidate.preauth);
 162 }
 163
 164
 165 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 166 {
 167         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 168             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 169                 return 0;
 170
 171 #ifdef IEEE8021X_EAPOL
 172         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 173             wpa_s->current_ssid &&
 174             !(wpa_s->current_ssid->eapol_flags &
 175               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 176                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 177                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 178                  * plaintext or static WEP keys). */
 179                 return 0;
 180         }
 181 #endif /* IEEE8021X_EAPOL */
 182
 183         return 1;
 184 }
 185
 186
 187 /**
 188  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 189  * @wpa_s: pointer to wpa_supplicant data
 190  * @ssid: Configuration data for the network
 191  * Returns: 0 on success, -1 on failure
 192  *
 193  * This function is called when starting authentication with a network that is
 194  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 195  */
 196 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 197                               struct wpa_ssid *ssid)
 198 {
 199 #ifdef IEEE8021X_EAPOL
 200         int aka = 0, sim = 0, type;
 201
 202         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 203                 return 0;
 204
 205         if (ssid->eap.eap_methods == NULL) {
 206                 sim = 1;
 207                 aka = 1;
 208         } else {
 209                 struct eap_method_type *eap = ssid->eap.eap_methods;
 210                 while (eap->vendor != EAP_VENDOR_IETF ||
 211                        eap->method != EAP_TYPE_NONE) {
 212                         if (eap->vendor == EAP_VENDOR_IETF) {
 213                                 if (eap->method == EAP_TYPE_SIM)
 214                                         sim = 1;
 215                                 else if (eap->method == EAP_TYPE_AKA)
 216                                         aka = 1;
 217                         }
 218                         eap++;
 219                 }
 220         }
 221
 222         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 223                 sim = 0;
 224         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
 225                 aka = 0;
 226
 227         if (!sim && !aka) {
 228                 wpa_printf(MSG_DEBUG, "Selected network is configured to use "
 229                            "SIM, but neither EAP-SIM nor EAP-AKA are enabled");
 230                 return 0;
 231         }
 232
 233         wpa_printf(MSG_DEBUG, "Selected network is configured to use SIM "
 234                    "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 235         if (sim && aka)
 236                 type = SCARD_TRY_BOTH;
 237         else if (aka)
 238                 type = SCARD_USIM_ONLY;
 239         else
 240                 type = SCARD_GSM_SIM_ONLY;
 241
 242         wpa_s->scard = scard_init(type);
 243         if (wpa_s->scard == NULL) {
 244                 wpa_printf(MSG_WARNING, "Failed to initialize SIM "
 245                            "(pcsc-lite)");
 246                 return -1;
 247         }
 248         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 249         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 250 #endif /* IEEE8021X_EAPOL */
 251
 252         return 0;
 253 }
 254
 255
 256 #ifndef CONFIG_NO_SCAN_PROCESSING
 257 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
 258                                         struct wpa_ssid *ssid)
 259 {
 260         int i, privacy = 0;
 261
 262         if (ssid->mixed_cell)
 263                 return 1;
 264
 265 #ifdef CONFIG_WPS
 266         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 267                 return 1;
 268 #endif /* CONFIG_WPS */
 269
 270         for (i = 0; i < NUM_WEP_KEYS; i++) {
 271                 if (ssid->wep_key_len[i]) {
 272                         privacy = 1;
 273                         break;
 274                 }
 275         }
 276 #ifdef IEEE8021X_EAPOL
 277         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 278             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 279                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 280                 privacy = 1;
 281 #endif /* IEEE8021X_EAPOL */
 282
 283         if (bss->caps & IEEE80211_CAP_PRIVACY)
 284                 return privacy;
 285         return !privacy;
 286 }
 287
 288
 289 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 290                                          struct wpa_ssid *ssid,
 291                                          struct wpa_scan_res *bss)
 292 {
 293         struct wpa_ie_data ie;
 294         int proto_match = 0;
 295         const u8 *rsn_ie, *wpa_ie;
 296         int ret;
 297
 298         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 299         if (ret >= 0)
 300                 return ret;
 301
 302         rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 303         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 304                 proto_match++;
 305
 306                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 307                         wpa_printf(MSG_DEBUG, "   skip RSN IE - parse failed");
 308                         break;
 309                 }
 310                 if (!(ie.proto & ssid->proto)) {
 311                         wpa_printf(MSG_DEBUG, "   skip RSN IE - proto "
 312                                    "mismatch");
 313                         break;
 314                 }
 315
 316                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 317                         wpa_printf(MSG_DEBUG, "   skip RSN IE - PTK cipher "
 318                                    "mismatch");
 319                         break;
 320                 }
 321
 322                 if (!(ie.group_cipher & ssid->group_cipher)) {
 323                         wpa_printf(MSG_DEBUG, "   skip RSN IE - GTK cipher "
 324                                    "mismatch");
 325                         break;
 326                 }
 327
 328                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 329                         wpa_printf(MSG_DEBUG, "   skip RSN IE - key mgmt "
 330                                    "mismatch");
 331                         break;
 332                 }
 333
 334 #ifdef CONFIG_IEEE80211W
 335                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 336                     ssid->ieee80211w == IEEE80211W_REQUIRED) {
 337                         wpa_printf(MSG_DEBUG, "   skip RSN IE - no mgmt frame "
 338                                    "protection");
 339                         break;
 340                 }
 341 #endif /* CONFIG_IEEE80211W */
 342
 343                 wpa_printf(MSG_DEBUG, "   selected based on RSN IE");
 344                 return 1;
 345         }
 346
 347         wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 348         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 349                 proto_match++;
 350
 351                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 352                         wpa_printf(MSG_DEBUG, "   skip WPA IE - parse failed");
 353                         break;
 354                 }
 355                 if (!(ie.proto & ssid->proto)) {
 356                         wpa_printf(MSG_DEBUG, "   skip WPA IE - proto "
 357                                    "mismatch");
 358                         break;
 359                 }
 360
 361                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 362                         wpa_printf(MSG_DEBUG, "   skip WPA IE - PTK cipher "
 363                                    "mismatch");
 364                         break;
 365                 }
 366
 367                 if (!(ie.group_cipher & ssid->group_cipher)) {
 368                         wpa_printf(MSG_DEBUG, "   skip WPA IE - GTK cipher "
 369                                    "mismatch");
 370                         break;
 371                 }
 372
 373                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 374                         wpa_printf(MSG_DEBUG, "   skip WPA IE - key mgmt "
 375                                    "mismatch");
 376                         break;
 377                 }
 378
 379                 wpa_printf(MSG_DEBUG, "   selected based on WPA IE");
 380                 return 1;
 381         }
 382
 383         if (proto_match == 0)
 384                 wpa_printf(MSG_DEBUG, "   skip - no WPA/RSN proto match");
 385
 386         return 0;
 387 }
 388
 389
 390 static struct wpa_scan_res *
 391 wpa_supplicant_select_bss_wpa(struct wpa_supplicant *wpa_s,
 392                               struct wpa_ssid *group,
 393                               struct wpa_ssid **selected_ssid)
 394 {
 395         struct wpa_ssid *ssid;
 396         struct wpa_scan_res *bss;
 397         size_t i;
 398         struct wpa_blacklist *e;
 399         const u8 *ie;
 400
 401         wpa_printf(MSG_DEBUG, "Try to find WPA-enabled AP");
 402         for (i = 0; i < wpa_s->scan_res->num; i++) {
 403                 const u8 *ssid_;
 404                 u8 wpa_ie_len, rsn_ie_len, ssid_len;
 405                 bss = wpa_s->scan_res->res[i];
 406
 407                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 408                 ssid_ = ie ? ie + 2 : (u8 *) "";
 409                 ssid_len = ie ? ie[1] : 0;
 410
 411                 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 412                 wpa_ie_len = ie ? ie[1] : 0;
 413
 414                 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 415                 rsn_ie_len = ie ? ie[1] : 0;
 416
 417                 wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 418                            "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
 419                            (int) i, MAC2STR(bss->bssid),
 420                            wpa_ssid_txt(ssid_, ssid_len),
 421                            wpa_ie_len, rsn_ie_len, bss->caps);
 422
 423                 e = wpa_blacklist_get(wpa_s, bss->bssid);
 424                 if (e && e->count > 1) {
 425                         wpa_printf(MSG_DEBUG, "   skip - blacklisted");
 426                         continue;
 427                 }
 428
 429                 if (wpa_ie_len == 0 && rsn_ie_len == 0) {
 430                         wpa_printf(MSG_DEBUG, "   skip - no WPA/RSN IE");
 431                         continue;
 432                 }
 433
 434                 for (ssid = group; ssid; ssid = ssid->pnext) {
 435                         int check_ssid = 1;
 436
 437                         if (ssid->disabled) {
 438                                 wpa_printf(MSG_DEBUG, "   skip - disabled");
 439                                 continue;
 440                         }
 441
 442 #ifdef CONFIG_WPS
 443                         if (ssid->ssid_len == 0 &&
 444                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 445                                 check_ssid = 0;
 446 #endif /* CONFIG_WPS */
 447
 448                         if (check_ssid &&
 449                             (ssid_len != ssid->ssid_len ||
 450                              os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
 451                                 wpa_printf(MSG_DEBUG, "   skip - "
 452                                            "SSID mismatch");
 453                                 continue;
 454                         }
 455
 456                         if (ssid->bssid_set &&
 457                             os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
 458                         {
 459                                 wpa_printf(MSG_DEBUG, "   skip - "
 460                                            "BSSID mismatch");
 461                                 continue;
 462                         }
 463
 464                         if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 465                                 continue;
 466
 467                         wpa_printf(MSG_DEBUG, "   selected WPA AP "
 468                                    MACSTR " ssid='%s'",
 469                                    MAC2STR(bss->bssid),
 470                                    wpa_ssid_txt(ssid_, ssid_len));
 471                         *selected_ssid = ssid;
 472                         return bss;
 473                 }
 474         }
 475
 476         return NULL;
 477 }
 478
 479
 480 static struct wpa_scan_res *
 481 wpa_supplicant_select_bss_non_wpa(struct wpa_supplicant *wpa_s,
 482                                   struct wpa_ssid *group,
 483                                   struct wpa_ssid **selected_ssid)
 484 {
 485         struct wpa_ssid *ssid;
 486         struct wpa_scan_res *bss;
 487         size_t i;
 488         struct wpa_blacklist *e;
 489         const u8 *ie;
 490
 491         wpa_printf(MSG_DEBUG, "Try to find non-WPA AP");
 492         for (i = 0; i < wpa_s->scan_res->num; i++) {
 493                 const u8 *ssid_;
 494                 u8 wpa_ie_len, rsn_ie_len, ssid_len;
 495                 bss = wpa_s->scan_res->res[i];
 496
 497                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 498                 ssid_ = ie ? ie + 2 : (u8 *) "";
 499                 ssid_len = ie ? ie[1] : 0;
 500
 501                 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 502                 wpa_ie_len = ie ? ie[1] : 0;
 503
 504                 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 505                 rsn_ie_len = ie ? ie[1] : 0;
 506
 507                 wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 508                            "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
 509                            (int) i, MAC2STR(bss->bssid),
 510                            wpa_ssid_txt(ssid_, ssid_len),
 511                            wpa_ie_len, rsn_ie_len, bss->caps);
 512
 513                 e = wpa_blacklist_get(wpa_s, bss->bssid);
 514                 if (e && e->count > 1) {
 515                         wpa_printf(MSG_DEBUG, "   skip - blacklisted");
 516                         continue;
 517                 }
 518
 519                 for (ssid = group; ssid; ssid = ssid->pnext) {
 520                         int check_ssid = ssid->ssid_len != 0;
 521
 522                         if (ssid->disabled) {
 523                                 wpa_printf(MSG_DEBUG, "   skip - disabled");
 524                                 continue;
 525                         }
 526
 527 #ifdef CONFIG_WPS
 528                         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 529                                 /* Only allow wildcard SSID match if an AP
 530                                  * advertises active WPS operation that matches
 531                                  * with our mode. */
 532                                 check_ssid = 1;
 533                                 if (ssid->ssid_len == 0 &&
 534                                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid,
 535                                                               bss))
 536                                         check_ssid = 0;
 537                         }
 538 #endif /* CONFIG_WPS */
 539
 540                         if (check_ssid &&
 541                             (ssid_len != ssid->ssid_len ||
 542                              os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
 543                                 wpa_printf(MSG_DEBUG, "   skip - "
 544                                            "SSID mismatch");
 545                                 continue;
 546                         }
 547
 548                         if (ssid->bssid_set &&
 549                             os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
 550                         {
 551                                 wpa_printf(MSG_DEBUG, "   skip - "
 552                                            "BSSID mismatch");
 553                                 continue;
 554                         }
 555
 556                         if (!(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 557                             !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 558                             !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA))
 559                         {
 560                                 wpa_printf(MSG_DEBUG, "   skip - "
 561                                            "non-WPA network not allowed");
 562                                 continue;
 563                         }
 564
 565                         if ((ssid->key_mgmt &
 566                              (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
 567                               WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK |
 568                               WPA_KEY_MGMT_IEEE8021X_SHA256 |
 569                               WPA_KEY_MGMT_PSK_SHA256)) &&
 570                             (wpa_ie_len != 0 || rsn_ie_len != 0)) {
 571                                 wpa_printf(MSG_DEBUG, "   skip - "
 572                                            "WPA network");
 573                                 continue;
 574                         }
 575
 576                         if (!wpa_supplicant_match_privacy(bss, ssid)) {
 577                                 wpa_printf(MSG_DEBUG, "   skip - "
 578                                            "privacy mismatch");
 579                                 continue;
 580                         }
 581
 582                         if (bss->caps & IEEE80211_CAP_IBSS) {
 583                                 wpa_printf(MSG_DEBUG, "   skip - "
 584                                            "IBSS (adhoc) network");
 585                                 continue;
 586                         }
 587
 588                         wpa_printf(MSG_DEBUG, "   selected non-WPA AP "
 589                                    MACSTR " ssid='%s'",
 590                                    MAC2STR(bss->bssid),
 591                                    wpa_ssid_txt(ssid_, ssid_len));
 592                         *selected_ssid = ssid;
 593                         return bss;
 594                 }
 595         }
 596
 597         return NULL;
 598 }
 599
 600
 601 static struct wpa_scan_res *
 602 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s, struct wpa_ssid *group,
 603                           struct wpa_ssid **selected_ssid)
 604 {
 605         struct wpa_scan_res *selected;
 606
 607         wpa_printf(MSG_DEBUG, "Selecting BSS from priority group %d",
 608                    group->priority);
 609
 610         /* First, try to find WPA-enabled AP */
 611         selected = wpa_supplicant_select_bss_wpa(wpa_s, group, selected_ssid);
 612         if (selected)
 613                 return selected;
 614
 615         /* If no WPA-enabled AP found, try to find non-WPA AP, if configuration
 616          * allows this. */
 617         return wpa_supplicant_select_bss_non_wpa(wpa_s, group, selected_ssid);
 618 }
 619
 620
 621 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s)
 622 {
 623         int prio, timeout;
 624         struct wpa_scan_res *selected = NULL;
 625         struct wpa_ssid *ssid = NULL;
 626
 627         wpa_supplicant_notify_scanning(wpa_s, 0);
 628
 629         if (wpa_supplicant_get_scan_results(wpa_s) < 0) {
 630                 if (wpa_s->conf->ap_scan == 2)
 631                         return;
 632                 wpa_printf(MSG_DEBUG, "Failed to get scan results - try "
 633                            "scanning again");
 634                 timeout = 1;
 635                 goto req_scan;
 636         }
 637
 638         /*
 639          * Don't post the results if this was the initial cached
 640          * and there were no results.
 641          */
 642         if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1 &&
 643             wpa_s->scan_res->num == 0) {
 644                 wpa_msg(wpa_s, MSG_DEBUG, "Cached scan results are "
 645                         "empty - not posting");
 646         } else {
 647                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
 648                 wpas_notify_scan_results(wpa_s);
 649         }
 650
 651         wpas_notify_scan_done(wpa_s, 1);
 652
 653         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
 654                 return;
 655
 656         if (wpa_s->disconnected) {
 657                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 658                 return;
 659         }
 660
 661         while (selected == NULL) {
 662                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 663                         selected = wpa_supplicant_select_bss(
 664                                 wpa_s, wpa_s->conf->pssid[prio], &ssid);
 665                         if (selected)
 666                                 break;
 667                 }
 668
 669                 if (selected == NULL && wpa_s->blacklist) {
 670                         wpa_printf(MSG_DEBUG, "No APs found - clear blacklist "
 671                                    "and try again");
 672                         wpa_blacklist_clear(wpa_s);
 673                         wpa_s->blacklist_cleared++;
 674                 } else if (selected == NULL) {
 675                         break;
 676                 }
 677         }
 678
 679         if (selected) {
 680                 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 681                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 682                                 "PBC session overlap");
 683                         timeout = 10;
 684                         goto req_scan;
 685                 }
 686
 687                 /* Do not trigger new association unless the BSSID has changed
 688                  * or if reassociation is requested. If we are in process of
 689                  * associating with the selected BSSID, do not trigger new
 690                  * attempt. */
 691                 if (wpa_s->reassociate ||
 692                     (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 693                      (wpa_s->wpa_state != WPA_ASSOCIATING ||
 694                       os_memcmp(selected->bssid, wpa_s->pending_bssid,
 695                                 ETH_ALEN) != 0))) {
 696                         if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 697                                 wpa_supplicant_req_scan(wpa_s, 10, 0);
 698                                 return;
 699                         }
 700                         wpa_supplicant_associate(wpa_s, selected, ssid);
 701                 } else {
 702                         wpa_printf(MSG_DEBUG, "Already associated with the "
 703                                    "selected AP.");
 704                 }
 705                 rsn_preauth_scan_results(wpa_s->wpa, wpa_s->scan_res);
 706         } else {
 707                 wpa_printf(MSG_DEBUG, "No suitable AP found.");
 708                 timeout = 5;
 709                 goto req_scan;
 710         }
 711
 712         return;
 713
 714 req_scan:
 715         if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1) {
 716                 /*
 717                  * Quick recovery if the initial scan results were not
 718                  * complete when fetched before the first scan request.
 719                  */
 720                 wpa_s->scan_res_tried++;
 721                 timeout = 0;
 722         }
 723         wpa_supplicant_req_scan(wpa_s, timeout, 0);
 724 }
 725 #endif /* CONFIG_NO_SCAN_PROCESSING */
 726
 727
 728 #ifdef CONFIG_IEEE80211R
 729 static void wpa_assoc_set_ft_params(struct wpa_supplicant *wpa_s,
 730                                     const u8 *ftie, const u8 *mdie)
 731 {
 732         const u8 *mobility_domain = NULL;
 733         const u8 *r0kh_id = NULL;
 734         size_t r0kh_id_len = 0;
 735         const u8 *r1kh_id = NULL;
 736         struct rsn_ftie *hdr;
 737         const u8 *pos, *end;
 738
 739         if (mdie == NULL || ftie == NULL)
 740                 return;
 741
 742         if (mdie[1] >= MOBILITY_DOMAIN_ID_LEN) {
 743                 mobility_domain = mdie + 2;
 744 #ifdef CONFIG_SME
 745                 wpa_s->sme.ft_used = 1;
 746                 os_memcpy(wpa_s->sme.mobility_domain, mobility_domain, 2);
 747 #endif /* CONFIG_SME */
 748         }
 749         if (ftie[1] >= sizeof(struct rsn_ftie)) {
 750                 end = ftie + 2 + ftie[1];
 751                 hdr = (struct rsn_ftie *) (ftie + 2);
 752                 pos = (const u8 *) (hdr + 1);
 753                 while (pos + 1 < end) {
 754                         if (pos + 2 + pos[1] > end)
 755                                 break;
 756                         if (pos[0] == FTIE_SUBELEM_R1KH_ID &&
 757                             pos[1] == FT_R1KH_ID_LEN)
 758                                 r1kh_id = pos + 2;
 759                         else if (pos[0] == FTIE_SUBELEM_R0KH_ID &&
 760                                  pos[1] >= 1 && pos[1] <= FT_R0KH_ID_MAX_LEN) {
 761                                 r0kh_id = pos + 2;
 762                                 r0kh_id_len = pos[1];
 763                         }
 764                         pos += 2 + pos[1];
 765                 }
 766         }
 767         wpa_sm_set_ft_params(wpa_s->wpa, mobility_domain, r0kh_id,
 768                              r0kh_id_len, r1kh_id);
 769 }
 770 #endif /* CONFIG_IEEE80211R */
 771
 772 static void wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
 773                                            union wpa_event_data *data)
 774 {
 775         int l, len, found = 0, wpa_found, rsn_found;
 776         const u8 *p;
 777 #ifdef CONFIG_IEEE80211R
 778         const u8 *mdie = NULL, *ftie = NULL;
 779 #endif /* CONFIG_IEEE80211R */
 780
 781         wpa_printf(MSG_DEBUG, "Association info event");
 782         if (data->assoc_info.req_ies)
 783                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
 784                             data->assoc_info.req_ies_len);
 785         if (data->assoc_info.resp_ies)
 786                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
 787                             data->assoc_info.resp_ies_len);
 788         if (data->assoc_info.beacon_ies)
 789                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
 790                             data->assoc_info.beacon_ies,
 791                             data->assoc_info.beacon_ies_len);
 792
 793         p = data->assoc_info.req_ies;
 794         l = data->assoc_info.req_ies_len;
 795
 796         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
 797         while (p && l >= 2) {
 798                 len = p[1] + 2;
 799                 if (len > l) {
 800                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
 801                                     p, l);
 802                         break;
 803                 }
 804                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
 805                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
 806                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
 807                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
 808                                 break;
 809                         found = 1;
 810                         wpa_find_assoc_pmkid(wpa_s);
 811                         break;
 812                 }
 813                 l -= len;
 814                 p += len;
 815         }
 816         if (!found && data->assoc_info.req_ies)
 817                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 818
 819 #ifdef CONFIG_IEEE80211R
 820         p = data->assoc_info.resp_ies;
 821         l = data->assoc_info.resp_ies_len;
 822
 823         /* Go through the IEs and make a copy of the FT/MD IE, if present. */
 824         while (p && l >= 2) {
 825                 len = p[1] + 2;
 826                 if (len > l) {
 827                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
 828                                     p, l);
 829                         break;
 830                 }
 831                 if (p[0] == WLAN_EID_FAST_BSS_TRANSITION)
 832                         ftie = p;
 833                 else if (p[0] == WLAN_EID_MOBILITY_DOMAIN)
 834                         mdie = p;
 835                 l -= len;
 836                 p += len;
 837         }
 838
 839         wpa_assoc_set_ft_params(wpa_s, ftie, mdie);
 840 #endif /* CONFIG_IEEE80211R */
 841
 842         /* WPA/RSN IE from Beacon/ProbeResp */
 843         p = data->assoc_info.beacon_ies;
 844         l = data->assoc_info.beacon_ies_len;
 845
 846         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
 847          */
 848         wpa_found = rsn_found = 0;
 849         while (p && l >= 2) {
 850                 len = p[1] + 2;
 851                 if (len > l) {
 852                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
 853                                     p, l);
 854                         break;
 855                 }
 856                 if (!wpa_found &&
 857                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
 858                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
 859                         wpa_found = 1;
 860                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
 861                 }
 862
 863                 if (!rsn_found &&
 864                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
 865                         rsn_found = 1;
 866                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
 867                 }
 868
 869                 l -= len;
 870                 p += len;
 871         }
 872
 873         if (!wpa_found && data->assoc_info.beacon_ies)
 874                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
 875         if (!rsn_found && data->assoc_info.beacon_ies)
 876                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
 877         if (wpa_found || rsn_found)
 878                 wpa_s->ap_ies_from_associnfo = 1;
 879 }
 880
 881
 882 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
 883                                        union wpa_event_data *data)
 884 {
 885         u8 bssid[ETH_ALEN];
 886         int ft_completed = wpa_ft_is_completed(wpa_s->wpa);
 887         int bssid_changed;
 888
 889         if (data)
 890                 wpa_supplicant_event_associnfo(wpa_s, data);
 891
 892         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
 893         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
 894                 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
 895         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
 896             (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
 897              os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
 898                 wpa_msg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
 899                         MACSTR, MAC2STR(bssid));
 900                 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
 901                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
 902                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 903                 if (bssid_changed)
 904                         wpas_notify_bssid_changed(wpa_s);
 905
 906                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
 907                         wpa_clear_keys(wpa_s, bssid);
 908                 }
 909                 if (wpa_supplicant_select_config(wpa_s) < 0) {
 910                         wpa_supplicant_disassociate(
 911                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 912                         return;
 913                 }
 914         }
 915
 916         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
 917         if (wpa_s->current_ssid) {
 918                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
 919                  * initialized before association, but for other modes,
 920                  * initialize PC/SC here, if the current configuration needs
 921                  * smartcard or SIM/USIM. */
 922                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
 923         }
 924         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
 925         l2_packet_notify_auth_start(wpa_s->l2);
 926
 927         /*
 928          * Set portEnabled first to FALSE in order to get EAP state machine out
 929          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
 930          * state machine may transit to AUTHENTICATING state based on obsolete
 931          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
 932          * AUTHENTICATED without ever giving chance to EAP state machine to
 933          * reset the state.
 934          */
 935         if (!ft_completed) {
 936                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 937                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 938         }
 939         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
 940                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 941         /* 802.1X::portControl = Auto */
 942         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
 943         wpa_s->eapol_received = 0;
 944         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 945             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
 946                 wpa_supplicant_cancel_auth_timeout(wpa_s);
 947                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 948         } else if (!ft_completed) {
 949                 /* Timeout for receiving the first EAPOL packet */
 950                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
 951         }
 952         wpa_supplicant_cancel_scan(wpa_s);
 953
 954         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
 955             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
 956                 /*
 957                  * We are done; the driver will take care of RSN 4-way
 958                  * handshake.
 959                  */
 960                 wpa_supplicant_cancel_auth_timeout(wpa_s);
 961                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 962                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
 963                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
 964         }
 965
 966         if (wpa_s->pending_eapol_rx) {
 967                 struct os_time now, age;
 968                 os_get_time(&now);
 969                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
 970                 if (age.sec == 0 && age.usec < 100000 &&
 971                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
 972                     0) {
 973                         wpa_printf(MSG_DEBUG, "Process pending EAPOL frame "
 974                                    "that was received just before association "
 975                                    "notification");
 976                         wpa_supplicant_rx_eapol(
 977                                 wpa_s, wpa_s->pending_eapol_rx_src,
 978                                 wpabuf_head(wpa_s->pending_eapol_rx),
 979                                 wpabuf_len(wpa_s->pending_eapol_rx));
 980                 }
 981                 wpabuf_free(wpa_s->pending_eapol_rx);
 982                 wpa_s->pending_eapol_rx = NULL;
 983         }
 984 }
 985
 986
 987 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s)
 988 {
 989         const u8 *bssid;
 990
 991         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
 992                 /*
 993                  * At least Host AP driver and a Prism3 card seemed to be
 994                  * generating streams of disconnected events when configuring
 995                  * IBSS for WPA-None. Ignore them for now.
 996                  */
 997                 wpa_printf(MSG_DEBUG, "Disconnect event - ignore in "
 998                            "IBSS/WPA-None mode");
 999                 return;
1000         }
1001
1002         if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1003             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1004                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1005                         "pre-shared key may be incorrect");
1006         }
1007         if (wpa_s->wpa_state >= WPA_ASSOCIATED)
1008                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
1009         bssid = wpa_s->bssid;
1010         if (is_zero_ether_addr(bssid))
1011                 bssid = wpa_s->pending_bssid;
1012         wpa_blacklist_add(wpa_s, bssid);
1013         wpa_sm_notify_disassoc(wpa_s->wpa);
1014         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "- Disconnect event - "
1015                 "remove keys");
1016         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1017                 wpa_s->keys_cleared = 0;
1018                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1019         }
1020         wpa_supplicant_mark_disassoc(wpa_s);
1021 }
1022
1023
1024 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1025 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
1026                                                     void *sock_ctx)
1027 {
1028         struct wpa_supplicant *wpa_s = eloop_ctx;
1029
1030         if (!wpa_s->pending_mic_error_report)
1031                 return;
1032
1033         wpa_printf(MSG_DEBUG, "WPA: Sending pending MIC error report");
1034         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1035         wpa_s->pending_mic_error_report = 0;
1036 }
1037 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1038
1039
1040 static void
1041 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1042                                          union wpa_event_data *data)
1043 {
1044         int pairwise;
1045         struct os_time t;
1046
1047         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1048         pairwise = (data && data->michael_mic_failure.unicast);
1049         os_get_time(&t);
1050         if ((wpa_s->last_michael_mic_error &&
1051              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1052             wpa_s->pending_mic_error_report) {
1053                 if (wpa_s->pending_mic_error_report) {
1054                         /*
1055                          * Send the pending MIC error report immediately since
1056                          * we are going to start countermeasures and AP better
1057                          * do the same.
1058                          */
1059                         wpa_sm_key_request(wpa_s->wpa, 1,
1060                                            wpa_s->pending_mic_error_pairwise);
1061                 }
1062
1063                 /* Send the new MIC error report immediately since we are going
1064                  * to start countermeasures and AP better do the same.
1065                  */
1066                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1067
1068                 /* initialize countermeasures */
1069                 wpa_s->countermeasures = 1;
1070                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1071
1072                 /*
1073                  * Need to wait for completion of request frame. We do not get
1074                  * any callback for the message completion, so just wait a
1075                  * short while and hope for the best. */
1076                 os_sleep(0, 10000);
1077
1078                 wpa_drv_set_countermeasures(wpa_s, 1);
1079                 wpa_supplicant_deauthenticate(wpa_s,
1080                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
1081                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1082                                      wpa_s, NULL);
1083                 eloop_register_timeout(60, 0,
1084                                        wpa_supplicant_stop_countermeasures,
1085                                        wpa_s, NULL);
1086                 /* TODO: mark the AP rejected for 60 second. STA is
1087                  * allowed to associate with another AP.. */
1088         } else {
1089 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1090                 if (wpa_s->mic_errors_seen) {
1091                         /*
1092                          * Reduce the effectiveness of Michael MIC error
1093                          * reports as a means for attacking against TKIP if
1094                          * more than one MIC failure is noticed with the same
1095                          * PTK. We delay the transmission of the reports by a
1096                          * random time between 0 and 60 seconds in order to
1097                          * force the attacker wait 60 seconds before getting
1098                          * the information on whether a frame resulted in a MIC
1099                          * failure.
1100                          */
1101                         u8 rval[4];
1102                         int sec;
1103
1104                         if (os_get_random(rval, sizeof(rval)) < 0)
1105                                 sec = os_random() % 60;
1106                         else
1107                                 sec = WPA_GET_BE32(rval) % 60;
1108                         wpa_printf(MSG_DEBUG, "WPA: Delay MIC error report %d "
1109                                    "seconds", sec);
1110                         wpa_s->pending_mic_error_report = 1;
1111                         wpa_s->pending_mic_error_pairwise = pairwise;
1112                         eloop_cancel_timeout(
1113                                 wpa_supplicant_delayed_mic_error_report,
1114                                 wpa_s, NULL);
1115                         eloop_register_timeout(
1116                                 sec, os_random() % 1000000,
1117                                 wpa_supplicant_delayed_mic_error_report,
1118                                 wpa_s, NULL);
1119                 } else {
1120                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1121                 }
1122 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1123                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1124 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1125         }
1126         wpa_s->last_michael_mic_error = t.sec;
1127         wpa_s->mic_errors_seen++;
1128 }
1129
1130
1131 #ifdef CONFIG_TERMINATE_ONLASTIF
1132 static int any_interfaces(struct wpa_supplicant *head)
1133 {
1134         struct wpa_supplicant *wpa_s;
1135
1136         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1137                 if (!wpa_s->interface_removed)
1138                         return 1;
1139         return 0;
1140 }
1141 #endif /* CONFIG_TERMINATE_ONLASTIF */
1142
1143
1144 static void
1145 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1146                                       union wpa_event_data *data)
1147 {
1148         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1149                 return;
1150
1151         switch (data->interface_status.ievent) {
1152         case EVENT_INTERFACE_ADDED:
1153                 if (!wpa_s->interface_removed)
1154                         break;
1155                 wpa_s->interface_removed = 0;
1156                 wpa_printf(MSG_DEBUG, "Configured interface was added.");
1157                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1158                         wpa_printf(MSG_INFO, "Failed to initialize the driver "
1159                                    "after interface was added.");
1160                 }
1161                 break;
1162         case EVENT_INTERFACE_REMOVED:
1163                 wpa_printf(MSG_DEBUG, "Configured interface was removed.");
1164                 wpa_s->interface_removed = 1;
1165                 wpa_supplicant_mark_disassoc(wpa_s);
1166                 l2_packet_deinit(wpa_s->l2);
1167                 wpa_s->l2 = NULL;
1168 #ifdef CONFIG_TERMINATE_ONLASTIF
1169                 /* check if last interface */
1170                 if (!any_interfaces(wpa_s->global->ifaces))
1171                         eloop_terminate();
1172 #endif /* CONFIG_TERMINATE_ONLASTIF */
1173                 break;
1174         }
1175 }
1176
1177
1178 #ifdef CONFIG_PEERKEY
1179 static void
1180 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1181                               union wpa_event_data *data)
1182 {
1183         if (data == NULL)
1184                 return;
1185         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1186 }
1187 #endif /* CONFIG_PEERKEY */
1188
1189
1190 #ifdef CONFIG_IEEE80211R
1191 static void
1192 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1193                                  union wpa_event_data *data)
1194 {
1195         if (data == NULL)
1196                 return;
1197
1198         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1199                                     data->ft_ies.ies_len,
1200                                     data->ft_ies.ft_action,
1201                                     data->ft_ies.target_ap,
1202                                     data->ft_ies.ric_ies,
1203                                     data->ft_ies.ric_ies_len) < 0) {
1204                 /* TODO: prevent MLME/driver from trying to associate? */
1205         }
1206 }
1207 #endif /* CONFIG_IEEE80211R */
1208
1209
1210 #ifdef CONFIG_IBSS_RSN
1211 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1212                                                 union wpa_event_data *data)
1213 {
1214         if (data == NULL)
1215                 return;
1216         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1217 }
1218 #endif /* CONFIG_IBSS_RSN */
1219
1220
1221 void wpa_supplicant_event(void *ctx, wpa_event_type event,
1222                           union wpa_event_data *data)
1223 {
1224         struct wpa_supplicant *wpa_s = ctx;
1225
1226         switch (event) {
1227         case EVENT_AUTH:
1228                 sme_event_auth(wpa_s, data);
1229                 break;
1230         case EVENT_ASSOC:
1231                 wpa_supplicant_event_assoc(wpa_s, data);
1232                 break;
1233         case EVENT_DEAUTH:
1234         case EVENT_DISASSOC:
1235                 wpa_supplicant_event_disassoc(wpa_s);
1236                 break;
1237         case EVENT_MICHAEL_MIC_FAILURE:
1238                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
1239                 break;
1240 #ifndef CONFIG_NO_SCAN_PROCESSING
1241         case EVENT_SCAN_RESULTS:
1242                 wpa_supplicant_event_scan_results(wpa_s);
1243                 break;
1244 #endif /* CONFIG_NO_SCAN_PROCESSING */
1245         case EVENT_ASSOCINFO:
1246                 wpa_supplicant_event_associnfo(wpa_s, data);
1247                 break;
1248         case EVENT_INTERFACE_STATUS:
1249                 wpa_supplicant_event_interface_status(wpa_s, data);
1250                 break;
1251         case EVENT_PMKID_CANDIDATE:
1252                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
1253                 break;
1254 #ifdef CONFIG_PEERKEY
1255         case EVENT_STKSTART:
1256                 wpa_supplicant_event_stkstart(wpa_s, data);
1257                 break;
1258 #endif /* CONFIG_PEERKEY */
1259 #ifdef CONFIG_IEEE80211R
1260         case EVENT_FT_RESPONSE:
1261                 wpa_supplicant_event_ft_response(wpa_s, data);
1262                 break;
1263 #endif /* CONFIG_IEEE80211R */
1264 #ifdef CONFIG_IBSS_RSN
1265         case EVENT_IBSS_RSN_START:
1266                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
1267                 break;
1268 #endif /* CONFIG_IBSS_RSN */
1269         case EVENT_ASSOC_REJECT:
1270                 sme_event_assoc_reject(wpa_s, data);
1271                 break;
1272         case EVENT_AUTH_TIMED_OUT:
1273                 sme_event_auth_timed_out(wpa_s, data);
1274                 break;
1275         case EVENT_ASSOC_TIMED_OUT:
1276                 sme_event_assoc_timed_out(wpa_s, data);
1277                 break;
1278         default:
1279                 wpa_printf(MSG_INFO, "Unknown event %d", event);
1280                 break;
1281         }
1282 }