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