vcs.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         wpa_supplicant_notify_scanning(wpa_s, 0);
 619
 620         if (wpa_supplicant_get_scan_results(wpa_s) < 0) {
 621                 if (wpa_s->conf->ap_scan == 2)
 622                         return;
 623                 wpa_printf(MSG_DEBUG, "Failed to get scan results - try "
 624                            "scanning again");
 625                 timeout = 1;
 626                 goto req_scan;
 627         }
 628
 629         /*
 630          * Don't post the results if this was the initial cached
 631          * and there were no results.
 632          */
 633         if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1 &&
 634             wpa_s->scan_res->num == 0) {
 635                 wpa_msg(wpa_s, MSG_DEBUG, "Cached scan results are "
 636                         "empty - not posting");
 637         } else {
 638                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
 639                 wpa_supplicant_dbus_notify_scan_results(wpa_s);
 640                 wpas_wps_notify_scan_results(wpa_s);
 641         }
 642
 643         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)) ||
 644             wpa_s->disconnected)
 645                 return;
 646
 647         while (selected == NULL) {
 648                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 649                         selected = wpa_supplicant_select_bss(
 650                                 wpa_s, wpa_s->conf->pssid[prio], &ssid);
 651                         if (selected)
 652                                 break;
 653                 }
 654
 655                 if (selected == NULL && wpa_s->blacklist) {
 656                         wpa_printf(MSG_DEBUG, "No APs found - clear blacklist "
 657                                    "and try again");
 658                         wpa_blacklist_clear(wpa_s);
 659                         wpa_s->blacklist_cleared++;
 660                 } else if (selected == NULL) {
 661                         break;
 662                 }
 663         }
 664
 665         if (selected) {
 666                 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 667                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 668                                 "PBC session overlap");
 669                         timeout = 10;
 670                         goto req_scan;
 671                 }
 672
 673                 /* Do not trigger new association unless the BSSID has changed
 674                  * or if reassociation is requested. If we are in process of
 675                  * associating with the selected BSSID, do not trigger new
 676                  * attempt. */
 677                 if (wpa_s->reassociate ||
 678                     (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 679                      (wpa_s->wpa_state != WPA_ASSOCIATING ||
 680                       os_memcmp(selected->bssid, wpa_s->pending_bssid,
 681                                 ETH_ALEN) != 0))) {
 682                         if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 683                                 wpa_supplicant_req_scan(wpa_s, 10, 0);
 684                                 return;
 685                         }
 686                         wpa_supplicant_associate(wpa_s, selected, ssid);
 687                 } else {
 688                         wpa_printf(MSG_DEBUG, "Already associated with the "
 689                                    "selected AP.");
 690                 }
 691                 rsn_preauth_scan_results(wpa_s->wpa, wpa_s->scan_res);
 692         } else {
 693                 wpa_printf(MSG_DEBUG, "No suitable AP found.");
 694                 timeout = 5;
 695                 goto req_scan;
 696         }
 697
 698         return;
 699
 700 req_scan:
 701         if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1) {
 702                 /*
 703                  * Quick recovery if the initial scan results were not
 704                  * complete when fetched before the first scan request.
 705                  */
 706                 wpa_s->scan_res_tried++;
 707                 timeout = 0;
 708         }
 709         wpa_supplicant_req_scan(wpa_s, timeout, 0);
 710 }
 711 #endif /* CONFIG_NO_SCAN_PROCESSING */
 712
 713
 714 #ifdef CONFIG_IEEE80211R
 715 static void wpa_assoc_set_ft_params(struct wpa_supplicant *wpa_s,
 716                                     const u8 *ftie, const u8 *mdie)
 717 {
 718         const u8 *mobility_domain = NULL;
 719         const u8 *r0kh_id = NULL;
 720         size_t r0kh_id_len = 0;
 721         const u8 *r1kh_id = NULL;
 722         struct rsn_ftie *hdr;
 723         const u8 *pos, *end;
 724
 725         if (mdie == NULL || ftie == NULL)
 726                 return;
 727
 728         if (mdie[1] >= MOBILITY_DOMAIN_ID_LEN) {
 729                 mobility_domain = mdie + 2;
 730 #ifdef CONFIG_SME
 731                 wpa_s->sme.ft_used = 1;
 732                 os_memcpy(wpa_s->sme.mobility_domain, mobility_domain, 2);
 733 #endif /* CONFIG_SME */
 734         }
 735         if (ftie[1] >= sizeof(struct rsn_ftie)) {
 736                 end = ftie + 2 + ftie[1];
 737                 hdr = (struct rsn_ftie *) (ftie + 2);
 738                 pos = (const u8 *) (hdr + 1);
 739                 while (pos + 1 < end) {
 740                         if (pos + 2 + pos[1] > end)
 741                                 break;
 742                         if (pos[0] == FTIE_SUBELEM_R1KH_ID &&
 743                             pos[1] == FT_R1KH_ID_LEN)
 744                                 r1kh_id = pos + 2;
 745                         else if (pos[0] == FTIE_SUBELEM_R0KH_ID &&
 746                                  pos[1] >= 1 && pos[1] <= FT_R0KH_ID_MAX_LEN) {
 747                                 r0kh_id = pos + 2;
 748                                 r0kh_id_len = pos[1];
 749                         }
 750                         pos += 2 + pos[1];
 751                 }
 752         }
 753         wpa_sm_set_ft_params(wpa_s->wpa, mobility_domain, r0kh_id,
 754                              r0kh_id_len, r1kh_id);
 755 }
 756 #endif /* CONFIG_IEEE80211R */
 757
 758 static void wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
 759                                            union wpa_event_data *data)
 760 {
 761         int l, len, found = 0, wpa_found, rsn_found;
 762         const u8 *p;
 763 #ifdef CONFIG_IEEE80211R
 764         const u8 *mdie = NULL, *ftie = NULL;
 765 #endif /* CONFIG_IEEE80211R */
 766
 767         wpa_printf(MSG_DEBUG, "Association info event");
 768         if (data->assoc_info.req_ies)
 769                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
 770                             data->assoc_info.req_ies_len);
 771         if (data->assoc_info.resp_ies)
 772                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
 773                             data->assoc_info.resp_ies_len);
 774         if (data->assoc_info.beacon_ies)
 775                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
 776                             data->assoc_info.beacon_ies,
 777                             data->assoc_info.beacon_ies_len);
 778
 779         p = data->assoc_info.req_ies;
 780         l = data->assoc_info.req_ies_len;
 781
 782         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
 783         while (p && l >= 2) {
 784                 len = p[1] + 2;
 785                 if (len > l) {
 786                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
 787                                     p, l);
 788                         break;
 789                 }
 790                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
 791                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
 792                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
 793                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
 794                                 break;
 795                         found = 1;
 796                         wpa_find_assoc_pmkid(wpa_s);
 797                         break;
 798                 }
 799                 l -= len;
 800                 p += len;
 801         }
 802         if (!found && data->assoc_info.req_ies)
 803                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 804
 805 #ifdef CONFIG_IEEE80211R
 806         p = data->assoc_info.resp_ies;
 807         l = data->assoc_info.resp_ies_len;
 808
 809         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
 810         while (p && l >= 2) {
 811                 len = p[1] + 2;
 812                 if (len > l) {
 813                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
 814                                     p, l);
 815                         break;
 816                 }
 817                 if (p[0] == WLAN_EID_FAST_BSS_TRANSITION)
 818                         ftie = p;
 819                 else if (p[0] == WLAN_EID_MOBILITY_DOMAIN)
 820                         mdie = p;
 821                 l -= len;
 822                 p += len;
 823         }
 824
 825         wpa_assoc_set_ft_params(wpa_s, ftie, mdie);
 826 #endif /* CONFIG_IEEE80211R */
 827
 828         /* WPA/RSN IE from Beacon/ProbeResp */
 829         p = data->assoc_info.beacon_ies;
 830         l = data->assoc_info.beacon_ies_len;
 831
 832         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
 833          */
 834         wpa_found = rsn_found = 0;
 835         while (p && l >= 2) {
 836                 len = p[1] + 2;
 837                 if (len > l) {
 838                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
 839                                     p, l);
 840                         break;
 841                 }
 842                 if (!wpa_found &&
 843                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
 844                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
 845                         wpa_found = 1;
 846                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
 847                 }
 848
 849                 if (!rsn_found &&
 850                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
 851                         rsn_found = 1;
 852                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
 853                 }
 854
 855                 l -= len;
 856                 p += len;
 857         }
 858
 859         if (!wpa_found && data->assoc_info.beacon_ies)
 860                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
 861         if (!rsn_found && data->assoc_info.beacon_ies)
 862                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
 863         if (wpa_found || rsn_found)
 864                 wpa_s->ap_ies_from_associnfo = 1;
 865 }
 866
 867
 868 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
 869                                        union wpa_event_data *data)
 870 {
 871         u8 bssid[ETH_ALEN];
 872         int ft_completed = wpa_ft_is_completed(wpa_s->wpa);
 873
 874         if (data)
 875                 wpa_supplicant_event_associnfo(wpa_s, data);
 876
 877         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
 878         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
 879                 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
 880         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
 881             (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
 882              os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
 883                 wpa_msg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
 884                         MACSTR, MAC2STR(bssid));
 885                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
 886                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 887                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
 888                         wpa_clear_keys(wpa_s, bssid);
 889                 }
 890                 if (wpa_supplicant_select_config(wpa_s) < 0) {
 891                         wpa_supplicant_disassociate(
 892                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 893                         return;
 894                 }
 895         }
 896
 897         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
 898         if (wpa_s->current_ssid) {
 899                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
 900                  * initialized before association, but for other modes,
 901                  * initialize PC/SC here, if the current configuration needs
 902                  * smartcard or SIM/USIM. */
 903                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
 904         }
 905         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
 906         l2_packet_notify_auth_start(wpa_s->l2);
 907
 908         /*
 909          * Set portEnabled first to FALSE in order to get EAP state machine out
 910          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
 911          * state machine may transit to AUTHENTICATING state based on obsolete
 912          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
 913          * AUTHENTICATED without ever giving chance to EAP state machine to
 914          * reset the state.
 915          */
 916         if (!ft_completed) {
 917                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 918                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 919         }
 920         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
 921                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 922         /* 802.1X::portControl = Auto */
 923         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
 924         wpa_s->eapol_received = 0;
 925         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 926             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
 927                 wpa_supplicant_cancel_auth_timeout(wpa_s);
 928                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 929         } else if (!ft_completed) {
 930                 /* Timeout for receiving the first EAPOL packet */
 931                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
 932         }
 933         wpa_supplicant_cancel_scan(wpa_s);
 934
 935         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
 936             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
 937                 /*
 938                  * We are done; the driver will take care of RSN 4-way
 939                  * handshake.
 940                  */
 941                 wpa_supplicant_cancel_auth_timeout(wpa_s);
 942                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 943                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
 944                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
 945         }
 946 }
 947
 948
 949 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s)
 950 {
 951         const u8 *bssid;
 952
 953         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
 954                 /*
 955                  * At least Host AP driver and a Prism3 card seemed to be
 956                  * generating streams of disconnected events when configuring
 957                  * IBSS for WPA-None. Ignore them for now.
 958                  */
 959                 wpa_printf(MSG_DEBUG, "Disconnect event - ignore in "
 960                            "IBSS/WPA-None mode");
 961                 return;
 962         }
 963
 964         if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
 965             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
 966                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
 967                         "pre-shared key may be incorrect");
 968         }
 969         if (wpa_s->wpa_state >= WPA_ASSOCIATED)
 970                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
 971         bssid = wpa_s->bssid;
 972         if (is_zero_ether_addr(bssid))
 973                 bssid = wpa_s->pending_bssid;
 974         wpa_blacklist_add(wpa_s, bssid);
 975         wpa_sm_notify_disassoc(wpa_s->wpa);
 976         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "- Disconnect event - "
 977                 "remove keys");
 978         if (wpa_supplicant_dynamic_keys(wpa_s)) {
 979                 wpa_s->keys_cleared = 0;
 980                 wpa_clear_keys(wpa_s, wpa_s->bssid);
 981         }
 982         wpa_supplicant_mark_disassoc(wpa_s);
 983 }
 984
 985
 986 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
 987 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
 988                                                     void *sock_ctx)
 989 {
 990         struct wpa_supplicant *wpa_s = eloop_ctx;
 991
 992         if (!wpa_s->pending_mic_error_report)
 993                 return;
 994
 995         wpa_printf(MSG_DEBUG, "WPA: Sending pending MIC error report");
 996         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
 997         wpa_s->pending_mic_error_report = 0;
 998 }
 999 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1000
1001
1002 static void
1003 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1004                                          union wpa_event_data *data)
1005 {
1006         int pairwise;
1007         struct os_time t;
1008
1009         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1010         pairwise = (data && data->michael_mic_failure.unicast);
1011         os_get_time(&t);
1012         if ((wpa_s->last_michael_mic_error &&
1013              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1014             wpa_s->pending_mic_error_report) {
1015                 if (wpa_s->pending_mic_error_report) {
1016                         /*
1017                          * Send the pending MIC error report immediately since
1018                          * we are going to start countermeasures and AP better
1019                          * do the same.
1020                          */
1021                         wpa_sm_key_request(wpa_s->wpa, 1,
1022                                            wpa_s->pending_mic_error_pairwise);
1023                 }
1024
1025                 /* Send the new MIC error report immediately since we are going
1026                  * to start countermeasures and AP better do the same.
1027                  */
1028                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1029
1030                 /* initialize countermeasures */
1031                 wpa_s->countermeasures = 1;
1032                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1033
1034                 /*
1035                  * Need to wait for completion of request frame. We do not get
1036                  * any callback for the message completion, so just wait a
1037                  * short while and hope for the best. */
1038                 os_sleep(0, 10000);
1039
1040                 wpa_drv_set_countermeasures(wpa_s, 1);
1041                 wpa_supplicant_deauthenticate(wpa_s,
1042                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
1043                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1044                                      wpa_s, NULL);
1045                 eloop_register_timeout(60, 0,
1046                                        wpa_supplicant_stop_countermeasures,
1047                                        wpa_s, NULL);
1048                 /* TODO: mark the AP rejected for 60 second. STA is
1049                  * allowed to associate with another AP.. */
1050         } else {
1051 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1052                 if (wpa_s->mic_errors_seen) {
1053                         /*
1054                          * Reduce the effectiveness of Michael MIC error
1055                          * reports as a means for attacking against TKIP if
1056                          * more than one MIC failure is noticed with the same
1057                          * PTK. We delay the transmission of the reports by a
1058                          * random time between 0 and 60 seconds in order to
1059                          * force the attacker wait 60 seconds before getting
1060                          * the information on whether a frame resulted in a MIC
1061                          * failure.
1062                          */
1063                         u8 rval[4];
1064                         int sec;
1065
1066                         if (os_get_random(rval, sizeof(rval)) < 0)
1067                                 sec = os_random() % 60;
1068                         else
1069                                 sec = WPA_GET_BE32(rval) % 60;
1070                         wpa_printf(MSG_DEBUG, "WPA: Delay MIC error report %d "
1071                                    "seconds", sec);
1072                         wpa_s->pending_mic_error_report = 1;
1073                         wpa_s->pending_mic_error_pairwise = pairwise;
1074                         eloop_cancel_timeout(
1075                                 wpa_supplicant_delayed_mic_error_report,
1076                                 wpa_s, NULL);
1077                         eloop_register_timeout(
1078                                 sec, os_random() % 1000000,
1079                                 wpa_supplicant_delayed_mic_error_report,
1080                                 wpa_s, NULL);
1081                 } else {
1082                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1083                 }
1084 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1085                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1086 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1087         }
1088         wpa_s->last_michael_mic_error = t.sec;
1089         wpa_s->mic_errors_seen++;
1090 }
1091
1092
1093 #ifdef CONFIG_TERMINATE_ONLASTIF
1094 static int any_interfaces(struct wpa_supplicant *head)
1095 {
1096         struct wpa_supplicant *wpa_s;
1097
1098         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1099                 if (!wpa_s->interface_removed)
1100                         return 1;
1101         return 0;
1102 }
1103 #endif /* CONFIG_TERMINATE_ONLASTIF */
1104
1105
1106 static void
1107 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1108                                       union wpa_event_data *data)
1109 {
1110         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1111                 return;
1112
1113         switch (data->interface_status.ievent) {
1114         case EVENT_INTERFACE_ADDED:
1115                 if (!wpa_s->interface_removed)
1116                         break;
1117                 wpa_s->interface_removed = 0;
1118                 wpa_printf(MSG_DEBUG, "Configured interface was added.");
1119                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1120                         wpa_printf(MSG_INFO, "Failed to initialize the driver "
1121                                    "after interface was added.");
1122                 }
1123                 break;
1124         case EVENT_INTERFACE_REMOVED:
1125                 wpa_printf(MSG_DEBUG, "Configured interface was removed.");
1126                 wpa_s->interface_removed = 1;
1127                 wpa_supplicant_mark_disassoc(wpa_s);
1128                 l2_packet_deinit(wpa_s->l2);
1129                 wpa_s->l2 = NULL;
1130 #ifdef CONFIG_TERMINATE_ONLASTIF
1131                 /* check if last interface */
1132                 if (!any_interfaces(wpa_s->global->ifaces))
1133                         eloop_terminate();
1134 #endif /* CONFIG_TERMINATE_ONLASTIF */
1135                 break;
1136         }
1137 }
1138
1139
1140 #ifdef CONFIG_PEERKEY
1141 static void
1142 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1143                               union wpa_event_data *data)
1144 {
1145         if (data == NULL)
1146                 return;
1147         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1148 }
1149 #endif /* CONFIG_PEERKEY */
1150
1151
1152 #ifdef CONFIG_IEEE80211R
1153 static void
1154 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1155                                  union wpa_event_data *data)
1156 {
1157         if (data == NULL)
1158                 return;
1159
1160         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1161                                     data->ft_ies.ies_len,
1162                                     data->ft_ies.ft_action,
1163                                     data->ft_ies.target_ap,
1164                                     data->ft_ies.ric_ies,
1165                                     data->ft_ies.ric_ies_len) < 0) {
1166                 /* TODO: prevent MLME/driver from trying to associate? */
1167         }
1168 }
1169 #endif /* CONFIG_IEEE80211R */
1170
1171
1172 #ifdef CONFIG_IBSS_RSN
1173 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1174                                                 union wpa_event_data *data)
1175 {
1176         if (data == NULL)
1177                 return;
1178         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1179 }
1180 #endif /* CONFIG_IBSS_RSN */
1181
1182
1183 void wpa_supplicant_event(void *ctx, wpa_event_type event,
1184                           union wpa_event_data *data)
1185 {
1186         struct wpa_supplicant *wpa_s = ctx;
1187
1188         switch (event) {
1189         case EVENT_AUTH:
1190                 sme_event_auth(wpa_s, data);
1191                 break;
1192         case EVENT_ASSOC:
1193                 wpa_supplicant_event_assoc(wpa_s, data);
1194                 break;
1195         case EVENT_DEAUTH:
1196         case EVENT_DISASSOC:
1197                 wpa_supplicant_event_disassoc(wpa_s);
1198                 break;
1199         case EVENT_MICHAEL_MIC_FAILURE:
1200                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
1201                 break;
1202 #ifndef CONFIG_NO_SCAN_PROCESSING
1203         case EVENT_SCAN_RESULTS:
1204                 wpa_supplicant_event_scan_results(wpa_s);
1205                 break;
1206 #endif /* CONFIG_NO_SCAN_PROCESSING */
1207         case EVENT_ASSOCINFO:
1208                 wpa_supplicant_event_associnfo(wpa_s, data);
1209                 break;
1210         case EVENT_INTERFACE_STATUS:
1211                 wpa_supplicant_event_interface_status(wpa_s, data);
1212                 break;
1213         case EVENT_PMKID_CANDIDATE:
1214                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
1215                 break;
1216 #ifdef CONFIG_PEERKEY
1217         case EVENT_STKSTART:
1218                 wpa_supplicant_event_stkstart(wpa_s, data);
1219                 break;
1220 #endif /* CONFIG_PEERKEY */
1221 #ifdef CONFIG_IEEE80211R
1222         case EVENT_FT_RESPONSE:
1223                 wpa_supplicant_event_ft_response(wpa_s, data);
1224                 break;
1225 #endif /* CONFIG_IEEE80211R */
1226 #ifdef CONFIG_IBSS_RSN
1227         case EVENT_IBSS_RSN_START:
1228                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
1229                 break;
1230 #endif /* CONFIG_IBSS_RSN */
1231         case EVENT_ASSOC_REJECT:
1232                 sme_event_assoc_reject(wpa_s, data);
1233                 break;
1234         case EVENT_AUTH_TIMED_OUT:
1235                 sme_event_auth_timed_out(wpa_s, data);
1236                 break;
1237         case EVENT_ASSOC_TIMED_OUT:
1238                 sme_event_assoc_timed_out(wpa_s, data);
1239                 break;
1240         default:
1241                 wpa_printf(MSG_INFO, "Unknown event %d", event);
1242                 break;
1243         }
1244 }