wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eapol_supp/eapol_supp_sm.h"
  13 #include "rsn_supp/wpa.h"
  14 #include "eloop.h"
  15 #include "config.h"
  16 #include "l2_packet/l2_packet.h"
  17 #include "wpa_supplicant_i.h"
  18 #include "driver_i.h"
  19 #include "pcsc_funcs.h"
  20 #include "rsn_supp/preauth.h"
  21 #include "rsn_supp/pmksa_cache.h"
  22 #include "common/wpa_ctrl.h"
  23 #include "eap_peer/eap.h"
  24 #include "ap/hostapd.h"
  25 #include "p2p/p2p.h"
  26 #include "wnm_sta.h"
  27 #include "notify.h"
  28 #include "common/ieee802_11_defs.h"
  29 #include "common/ieee802_11_common.h"
  30 #include "crypto/random.h"
  31 #include "blacklist.h"
  32 #include "wpas_glue.h"
  33 #include "wps_supplicant.h"
  34 #include "ibss_rsn.h"
  35 #include "sme.h"
  36 #include "gas_query.h"
  37 #include "p2p_supplicant.h"
  38 #include "bgscan.h"
  39 #include "autoscan.h"
  40 #include "ap.h"
  41 #include "bss.h"
  42 #include "scan.h"
  43 #include "offchannel.h"
  44 #include "interworking.h"
  45 #include "mesh.h"
  46 #include "mesh_mpm.h"
  47 #include "wmm_ac.h"
  48
  49
  50 #ifndef CONFIG_NO_SCAN_PROCESSING
  51 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  52                                               int new_scan, int own_request);
  53 #endif /* CONFIG_NO_SCAN_PROCESSING */
  54
  55
  56 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  57                               struct wpa_ssid *ssid)
  58 {
  59         struct os_reltime now;
  60
  61         if (ssid == NULL || ssid->disabled_until.sec == 0)
  62                 return 0;
  63
  64         os_get_reltime(&now);
  65         if (ssid->disabled_until.sec > now.sec)
  66                 return ssid->disabled_until.sec - now.sec;
  67
  68         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  69
  70         return 0;
  71 }
  72
  73
  74 static struct wpa_bss * wpa_supplicant_get_new_bss(
  75         struct wpa_supplicant *wpa_s, const u8 *bssid)
  76 {
  77         struct wpa_bss *bss = NULL;
  78         struct wpa_ssid *ssid = wpa_s->current_ssid;
  79
  80         if (ssid->ssid_len > 0)
  81                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
  82         if (!bss)
  83                 bss = wpa_bss_get_bssid(wpa_s, bssid);
  84
  85         return bss;
  86 }
  87
  88
  89 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
  90 {
  91         struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
  92
  93         if (!bss) {
  94                 wpa_supplicant_update_scan_results(wpa_s);
  95
  96                 /* Get the BSS from the new scan results */
  97                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
  98         }
  99
 100         if (bss)
 101                 wpa_s->current_bss = bss;
 102 }
 103
 104
 105 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
 106 {
 107         struct wpa_ssid *ssid, *old_ssid;
 108         int res;
 109
 110         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
 111                 wpa_supplicant_update_current_bss(wpa_s);
 112                 return 0;
 113         }
 114
 115         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
 116                 "information");
 117         ssid = wpa_supplicant_get_ssid(wpa_s);
 118         if (ssid == NULL) {
 119                 wpa_msg(wpa_s, MSG_INFO,
 120                         "No network configuration found for the current AP");
 121                 return -1;
 122         }
 123
 124         if (wpas_network_disabled(wpa_s, ssid)) {
 125                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 126                 return -1;
 127         }
 128
 129         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 130             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 131                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 132                 return -1;
 133         }
 134
 135         res = wpas_temp_disabled(wpa_s, ssid);
 136         if (res > 0) {
 137                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 138                         "disabled for %d second(s)", res);
 139                 return -1;
 140         }
 141
 142         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 143                 "current AP");
 144         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 145                 u8 wpa_ie[80];
 146                 size_t wpa_ie_len = sizeof(wpa_ie);
 147                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 148                                               wpa_ie, &wpa_ie_len) < 0)
 149                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 150         } else {
 151                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 152         }
 153
 154         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 155                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 156         old_ssid = wpa_s->current_ssid;
 157         wpa_s->current_ssid = ssid;
 158
 159         wpa_supplicant_update_current_bss(wpa_s);
 160
 161         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 162         wpa_supplicant_initiate_eapol(wpa_s);
 163         if (old_ssid != wpa_s->current_ssid)
 164                 wpas_notify_network_changed(wpa_s);
 165
 166         return 0;
 167 }
 168
 169
 170 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 171 {
 172         struct wpa_supplicant *wpa_s = eloop_ctx;
 173
 174         if (wpa_s->countermeasures) {
 175                 wpa_s->countermeasures = 0;
 176                 wpa_drv_set_countermeasures(wpa_s, 0);
 177                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 178                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 179         }
 180 }
 181
 182
 183 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 184 {
 185         int bssid_changed;
 186
 187         wnm_bss_keep_alive_deinit(wpa_s);
 188
 189 #ifdef CONFIG_IBSS_RSN
 190         ibss_rsn_deinit(wpa_s->ibss_rsn);
 191         wpa_s->ibss_rsn = NULL;
 192 #endif /* CONFIG_IBSS_RSN */
 193
 194 #ifdef CONFIG_AP
 195         wpa_supplicant_ap_deinit(wpa_s);
 196 #endif /* CONFIG_AP */
 197
 198         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 199                 return;
 200
 201         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 202         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 203         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 204         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 205 #ifdef CONFIG_SME
 206         wpa_s->sme.prev_bssid_set = 0;
 207 #endif /* CONFIG_SME */
 208 #ifdef CONFIG_P2P
 209         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 210 #endif /* CONFIG_P2P */
 211         wpa_s->current_bss = NULL;
 212         wpa_s->assoc_freq = 0;
 213 #ifdef CONFIG_IEEE80211R
 214 #ifdef CONFIG_SME
 215         if (wpa_s->sme.ft_ies)
 216                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 217 #endif /* CONFIG_SME */
 218 #endif /* CONFIG_IEEE80211R */
 219
 220         if (bssid_changed)
 221                 wpas_notify_bssid_changed(wpa_s);
 222
 223         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 224         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 225         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 226                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 227         wpa_s->ap_ies_from_associnfo = 0;
 228         wpa_s->current_ssid = NULL;
 229         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 230         wpa_s->key_mgmt = 0;
 231 }
 232
 233
 234 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 235 {
 236         struct wpa_ie_data ie;
 237         int pmksa_set = -1;
 238         size_t i;
 239
 240         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 241             ie.pmkid == NULL)
 242                 return;
 243
 244         for (i = 0; i < ie.num_pmkid; i++) {
 245                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 246                                                     ie.pmkid + i * PMKID_LEN,
 247                                                     NULL, NULL, 0);
 248                 if (pmksa_set == 0) {
 249                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 250                         break;
 251                 }
 252         }
 253
 254         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 255                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 256 }
 257
 258
 259 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 260                                                  union wpa_event_data *data)
 261 {
 262         if (data == NULL) {
 263                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 264                         "event");
 265                 return;
 266         }
 267         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 268                 " index=%d preauth=%d",
 269                 MAC2STR(data->pmkid_candidate.bssid),
 270                 data->pmkid_candidate.index,
 271                 data->pmkid_candidate.preauth);
 272
 273         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 274                             data->pmkid_candidate.index,
 275                             data->pmkid_candidate.preauth);
 276 }
 277
 278
 279 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 280 {
 281         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 282             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 283                 return 0;
 284
 285 #ifdef IEEE8021X_EAPOL
 286         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 287             wpa_s->current_ssid &&
 288             !(wpa_s->current_ssid->eapol_flags &
 289               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 290                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 291                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 292                  * plaintext or static WEP keys). */
 293                 return 0;
 294         }
 295 #endif /* IEEE8021X_EAPOL */
 296
 297         return 1;
 298 }
 299
 300
 301 /**
 302  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 303  * @wpa_s: pointer to wpa_supplicant data
 304  * @ssid: Configuration data for the network
 305  * Returns: 0 on success, -1 on failure
 306  *
 307  * This function is called when starting authentication with a network that is
 308  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 309  */
 310 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 311                               struct wpa_ssid *ssid)
 312 {
 313 #ifdef IEEE8021X_EAPOL
 314 #ifdef PCSC_FUNCS
 315         int aka = 0, sim = 0;
 316
 317         if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
 318             wpa_s->scard != NULL || wpa_s->conf->external_sim)
 319                 return 0;
 320
 321         if (ssid == NULL || ssid->eap.eap_methods == NULL) {
 322                 sim = 1;
 323                 aka = 1;
 324         } else {
 325                 struct eap_method_type *eap = ssid->eap.eap_methods;
 326                 while (eap->vendor != EAP_VENDOR_IETF ||
 327                        eap->method != EAP_TYPE_NONE) {
 328                         if (eap->vendor == EAP_VENDOR_IETF) {
 329                                 if (eap->method == EAP_TYPE_SIM)
 330                                         sim = 1;
 331                                 else if (eap->method == EAP_TYPE_AKA ||
 332                                          eap->method == EAP_TYPE_AKA_PRIME)
 333                                         aka = 1;
 334                         }
 335                         eap++;
 336                 }
 337         }
 338
 339         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 340                 sim = 0;
 341         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 342             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 343             NULL)
 344                 aka = 0;
 345
 346         if (!sim && !aka) {
 347                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 348                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 349                         "enabled");
 350                 return 0;
 351         }
 352
 353         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 354                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 355
 356         wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
 357         if (wpa_s->scard == NULL) {
 358                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 359                         "(pcsc-lite)");
 360                 return -1;
 361         }
 362         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 363         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 364 #endif /* PCSC_FUNCS */
 365 #endif /* IEEE8021X_EAPOL */
 366
 367         return 0;
 368 }
 369
 370
 371 #ifndef CONFIG_NO_SCAN_PROCESSING
 372
 373 static int has_wep_key(struct wpa_ssid *ssid)
 374 {
 375         int i;
 376
 377         for (i = 0; i < NUM_WEP_KEYS; i++) {
 378                 if (ssid->wep_key_len[i])
 379                         return 1;
 380         }
 381
 382         return 0;
 383 }
 384
 385
 386 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 387                                         struct wpa_ssid *ssid)
 388 {
 389         int privacy = 0;
 390
 391         if (ssid->mixed_cell)
 392                 return 1;
 393
 394 #ifdef CONFIG_WPS
 395         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 396                 return 1;
 397 #endif /* CONFIG_WPS */
 398
 399         if (has_wep_key(ssid))
 400                 privacy = 1;
 401
 402 #ifdef IEEE8021X_EAPOL
 403         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 404             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 405                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 406                 privacy = 1;
 407 #endif /* IEEE8021X_EAPOL */
 408
 409         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 410                 privacy = 1;
 411
 412         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 413                 privacy = 1;
 414
 415         if (bss->caps & IEEE80211_CAP_PRIVACY)
 416                 return privacy;
 417         return !privacy;
 418 }
 419
 420
 421 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 422                                          struct wpa_ssid *ssid,
 423                                          struct wpa_bss *bss)
 424 {
 425         struct wpa_ie_data ie;
 426         int proto_match = 0;
 427         const u8 *rsn_ie, *wpa_ie;
 428         int ret;
 429         int wep_ok;
 430
 431         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 432         if (ret >= 0)
 433                 return ret;
 434
 435         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 436         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 437                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 438                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 439                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 440
 441         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 442         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 443                 proto_match++;
 444
 445                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 446                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 447                                 "failed");
 448                         break;
 449                 }
 450
 451                 if (wep_ok &&
 452                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 453                 {
 454                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 455                                 "in RSN IE");
 456                         return 1;
 457                 }
 458
 459                 if (!(ie.proto & ssid->proto)) {
 460                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 461                                 "mismatch");
 462                         break;
 463                 }
 464
 465                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 466                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 467                                 "cipher mismatch");
 468                         break;
 469                 }
 470
 471                 if (!(ie.group_cipher & ssid->group_cipher)) {
 472                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 473                                 "cipher mismatch");
 474                         break;
 475                 }
 476
 477                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 478                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 479                                 "mismatch");
 480                         break;
 481                 }
 482
 483 #ifdef CONFIG_IEEE80211W
 484                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 485                     (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
 486                      wpa_s->conf->pmf : ssid->ieee80211w) ==
 487                     MGMT_FRAME_PROTECTION_REQUIRED) {
 488                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 489                                 "frame protection");
 490                         break;
 491                 }
 492 #endif /* CONFIG_IEEE80211W */
 493
 494                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 495                 return 1;
 496         }
 497
 498         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 499         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 500                 proto_match++;
 501
 502                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 503                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 504                                 "failed");
 505                         break;
 506                 }
 507
 508                 if (wep_ok &&
 509                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 510                 {
 511                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 512                                 "in WPA IE");
 513                         return 1;
 514                 }
 515
 516                 if (!(ie.proto & ssid->proto)) {
 517                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 518                                 "mismatch");
 519                         break;
 520                 }
 521
 522                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 523                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 524                                 "cipher mismatch");
 525                         break;
 526                 }
 527
 528                 if (!(ie.group_cipher & ssid->group_cipher)) {
 529                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 530                                 "cipher mismatch");
 531                         break;
 532                 }
 533
 534                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 535                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 536                                 "mismatch");
 537                         break;
 538                 }
 539
 540                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 541                 return 1;
 542         }
 543
 544         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 545             !rsn_ie) {
 546                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 547                 return 1;
 548         }
 549
 550         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 551             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 552                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 553                 return 0;
 554         }
 555
 556         if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
 557             wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
 558                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
 559                 return 1;
 560         }
 561
 562         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 563                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 564                 return 1;
 565         }
 566
 567         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 568                 "WPA/WPA2");
 569
 570         return 0;
 571 }
 572
 573
 574 static int freq_allowed(int *freqs, int freq)
 575 {
 576         int i;
 577
 578         if (freqs == NULL)
 579                 return 1;
 580
 581         for (i = 0; freqs[i]; i++)
 582                 if (freqs[i] == freq)
 583                         return 1;
 584         return 0;
 585 }
 586
 587
 588 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 589 {
 590         const struct hostapd_hw_modes *mode = NULL, *modes;
 591         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 592         const u8 *rate_ie;
 593         int i, j, k;
 594
 595         if (bss->freq == 0)
 596                 return 1; /* Cannot do matching without knowing band */
 597
 598         modes = wpa_s->hw.modes;
 599         if (modes == NULL) {
 600                 /*
 601                  * The driver does not provide any additional information
 602                  * about the utilized hardware, so allow the connection attempt
 603                  * to continue.
 604                  */
 605                 return 1;
 606         }
 607
 608         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 609                 for (j = 0; j < modes[i].num_channels; j++) {
 610                         int freq = modes[i].channels[j].freq;
 611                         if (freq == bss->freq) {
 612                                 if (mode &&
 613                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 614                                         break; /* do not allow 802.11b replace
 615                                                 * 802.11g */
 616                                 mode = &modes[i];
 617                                 break;
 618                         }
 619                 }
 620         }
 621
 622         if (mode == NULL)
 623                 return 0;
 624
 625         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 626                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 627                 if (rate_ie == NULL)
 628                         continue;
 629
 630                 for (j = 2; j < rate_ie[1] + 2; j++) {
 631                         int flagged = !!(rate_ie[j] & 0x80);
 632                         int r = (rate_ie[j] & 0x7f) * 5;
 633
 634                         /*
 635                          * IEEE Std 802.11n-2009 7.3.2.2:
 636                          * The new BSS Membership selector value is encoded
 637                          * like a legacy basic rate, but it is not a rate and
 638                          * only indicates if the BSS members are required to
 639                          * support the mandatory features of Clause 20 [HT PHY]
 640                          * in order to join the BSS.
 641                          */
 642                         if (flagged && ((rate_ie[j] & 0x7f) ==
 643                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 644                                 if (!ht_supported(mode)) {
 645                                         wpa_dbg(wpa_s, MSG_DEBUG,
 646                                                 "   hardware does not support "
 647                                                 "HT PHY");
 648                                         return 0;
 649                                 }
 650                                 continue;
 651                         }
 652
 653                         /* There's also a VHT selector for 802.11ac */
 654                         if (flagged && ((rate_ie[j] & 0x7f) ==
 655                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 656                                 if (!vht_supported(mode)) {
 657                                         wpa_dbg(wpa_s, MSG_DEBUG,
 658                                                 "   hardware does not support "
 659                                                 "VHT PHY");
 660                                         return 0;
 661                                 }
 662                                 continue;
 663                         }
 664
 665                         if (!flagged)
 666                                 continue;
 667
 668                         /* check for legacy basic rates */
 669                         for (k = 0; k < mode->num_rates; k++) {
 670                                 if (mode->rates[k] == r)
 671                                         break;
 672                         }
 673                         if (k == mode->num_rates) {
 674                                 /*
 675                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 676                                  * order to join a BSS all required rates
 677                                  * have to be supported by the hardware.
 678                                  */
 679                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 680                                         "not support required rate %d.%d Mbps",
 681                                         r / 10, r % 10);
 682                                 return 0;
 683                         }
 684                 }
 685         }
 686
 687         return 1;
 688 }
 689
 690
 691 /*
 692  * Test whether BSS is in an ESS.
 693  * This is done differently in DMG (60 GHz) and non-DMG bands
 694  */
 695 static int bss_is_ess(struct wpa_bss *bss)
 696 {
 697         if (bss_is_dmg(bss)) {
 698                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 699                         IEEE80211_CAP_DMG_AP;
 700         }
 701
 702         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 703                 IEEE80211_CAP_ESS);
 704 }
 705
 706
 707 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 708                                             int i, struct wpa_bss *bss,
 709                                             struct wpa_ssid *group,
 710                                             int only_first_ssid)
 711 {
 712         u8 wpa_ie_len, rsn_ie_len;
 713         int wpa;
 714         struct wpa_blacklist *e;
 715         const u8 *ie;
 716         struct wpa_ssid *ssid;
 717         int osen;
 718
 719         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 720         wpa_ie_len = ie ? ie[1] : 0;
 721
 722         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 723         rsn_ie_len = ie ? ie[1] : 0;
 724
 725         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 726         osen = ie != NULL;
 727
 728         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 729                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
 730                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 731                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 732                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 733                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 734                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 735                 " p2p" : "",
 736                 osen ? " osen=1" : "");
 737
 738         e = wpa_blacklist_get(wpa_s, bss->bssid);
 739         if (e) {
 740                 int limit = 1;
 741                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 742                         /*
 743                          * When only a single network is enabled, we can
 744                          * trigger blacklisting on the first failure. This
 745                          * should not be done with multiple enabled networks to
 746                          * avoid getting forced to move into a worse ESS on
 747                          * single error if there are no other BSSes of the
 748                          * current ESS.
 749                          */
 750                         limit = 0;
 751                 }
 752                 if (e->count > limit) {
 753                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 754                                 "(count=%d limit=%d)", e->count, limit);
 755                         return NULL;
 756                 }
 757         }
 758
 759         if (bss->ssid_len == 0) {
 760                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 761                 return NULL;
 762         }
 763
 764         if (disallowed_bssid(wpa_s, bss->bssid)) {
 765                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 766                 return NULL;
 767         }
 768
 769         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 770                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 771                 return NULL;
 772         }
 773
 774         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 775
 776         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 777                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 778                 int res;
 779
 780                 if (wpas_network_disabled(wpa_s, ssid)) {
 781                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 782                         continue;
 783                 }
 784
 785                 res = wpas_temp_disabled(wpa_s, ssid);
 786                 if (res > 0) {
 787                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 788                                 "temporarily for %d second(s)", res);
 789                         continue;
 790                 }
 791
 792 #ifdef CONFIG_WPS
 793                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 794                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 795                                 "(WPS)");
 796                         continue;
 797                 }
 798
 799                 if (wpa && ssid->ssid_len == 0 &&
 800                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 801                         check_ssid = 0;
 802
 803                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 804                         /* Only allow wildcard SSID match if an AP
 805                          * advertises active WPS operation that matches
 806                          * with our mode. */
 807                         check_ssid = 1;
 808                         if (ssid->ssid_len == 0 &&
 809                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 810                                 check_ssid = 0;
 811                 }
 812 #endif /* CONFIG_WPS */
 813
 814                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 815                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 816                         check_ssid = 0;
 817
 818                 if (check_ssid &&
 819                     (bss->ssid_len != ssid->ssid_len ||
 820                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 821                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 822                         continue;
 823                 }
 824
 825                 if (ssid->bssid_set &&
 826                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 827                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 828                         continue;
 829                 }
 830
 831                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 832                         continue;
 833
 834                 if (!osen && !wpa &&
 835                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 836                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 837                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 838                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 839                                 "not allowed");
 840                         continue;
 841                 }
 842
 843                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 844                     has_wep_key(ssid)) {
 845                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 846                         continue;
 847                 }
 848
 849                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
 850                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
 851                                 "not allowed");
 852                         continue;
 853                 }
 854
 855                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 856                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 857                                 "mismatch");
 858                         continue;
 859                 }
 860
 861                 if (!bss_is_ess(bss)) {
 862                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 863                         continue;
 864                 }
 865
 866                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 867                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 868                                 "allowed");
 869                         continue;
 870                 }
 871
 872                 if (!rate_match(wpa_s, bss)) {
 873                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 874                                 "not match");
 875                         continue;
 876                 }
 877
 878 #ifdef CONFIG_P2P
 879                 if (ssid->p2p_group &&
 880                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 881                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 882                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
 883                         continue;
 884                 }
 885
 886                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
 887                         struct wpabuf *p2p_ie;
 888                         u8 dev_addr[ETH_ALEN];
 889
 890                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
 891                         if (ie == NULL) {
 892                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
 893                                 continue;
 894                         }
 895                         p2p_ie = wpa_bss_get_vendor_ie_multi(
 896                                 bss, P2P_IE_VENDOR_TYPE);
 897                         if (p2p_ie == NULL) {
 898                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
 899                                 continue;
 900                         }
 901
 902                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
 903                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
 904                                          ETH_ALEN) != 0) {
 905                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
 906                                 wpabuf_free(p2p_ie);
 907                                 continue;
 908                         }
 909                         wpabuf_free(p2p_ie);
 910                 }
 911
 912                 /*
 913                  * TODO: skip the AP if its P2P IE has Group Formation
 914                  * bit set in the P2P Group Capability Bitmap and we
 915                  * are not in Group Formation with that device.
 916                  */
 917 #endif /* CONFIG_P2P */
 918
 919                 /* Matching configuration found */
 920                 return ssid;
 921         }
 922
 923         /* No matching configuration found */
 924         return NULL;
 925 }
 926
 927
 928 static struct wpa_bss *
 929 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 930                           struct wpa_ssid *group,
 931                           struct wpa_ssid **selected_ssid,
 932                           int only_first_ssid)
 933 {
 934         unsigned int i;
 935
 936         if (only_first_ssid)
 937                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
 938                         group->id);
 939         else
 940                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 941                         group->priority);
 942
 943         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 944                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 945                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
 946                                                     only_first_ssid);
 947                 if (!*selected_ssid)
 948                         continue;
 949                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 950                         " ssid='%s'",
 951                         MAC2STR(bss->bssid),
 952                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
 953                 return bss;
 954         }
 955
 956         return NULL;
 957 }
 958
 959
 960 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 961                                              struct wpa_ssid **selected_ssid)
 962 {
 963         struct wpa_bss *selected = NULL;
 964         int prio;
 965         struct wpa_ssid *next_ssid = NULL;
 966
 967         if (wpa_s->last_scan_res == NULL ||
 968             wpa_s->last_scan_res_used == 0)
 969                 return NULL; /* no scan results from last update */
 970
 971         if (wpa_s->next_ssid) {
 972                 struct wpa_ssid *ssid;
 973
 974                 /* check that next_ssid is still valid */
 975                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 976                         if (ssid == wpa_s->next_ssid)
 977                                 break;
 978                 }
 979                 next_ssid = ssid;
 980                 wpa_s->next_ssid = NULL;
 981         }
 982
 983         while (selected == NULL) {
 984                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 985                         if (next_ssid && next_ssid->priority ==
 986                             wpa_s->conf->pssid[prio]->priority) {
 987                                 selected = wpa_supplicant_select_bss(
 988                                         wpa_s, next_ssid, selected_ssid, 1);
 989                                 if (selected)
 990                                         break;
 991                         }
 992                         selected = wpa_supplicant_select_bss(
 993                                 wpa_s, wpa_s->conf->pssid[prio],
 994                                 selected_ssid, 0);
 995                         if (selected)
 996                                 break;
 997                 }
 998
 999                 if (selected == NULL && wpa_s->blacklist &&
1000                     !wpa_s->countermeasures) {
1001                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1002                                 "blacklist and try again");
1003                         wpa_blacklist_clear(wpa_s);
1004                         wpa_s->blacklist_cleared++;
1005                 } else if (selected == NULL)
1006                         break;
1007         }
1008
1009         return selected;
1010 }
1011
1012
1013 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1014                                         int timeout_sec, int timeout_usec)
1015 {
1016         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1017                 /*
1018                  * No networks are enabled; short-circuit request so
1019                  * we don't wait timeout seconds before transitioning
1020                  * to INACTIVE state.
1021                  */
1022                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1023                         "since there are no enabled networks");
1024                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1025                 return;
1026         }
1027
1028         wpa_s->scan_for_connection = 1;
1029         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1030 }
1031
1032
1033 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1034                            struct wpa_bss *selected,
1035                            struct wpa_ssid *ssid)
1036 {
1037         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1038                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1039                         "PBC session overlap");
1040 #ifdef CONFIG_P2P
1041                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1042                     wpa_s->p2p_in_provisioning) {
1043                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1044                                                wpa_s, NULL);
1045                         return -1;
1046                 }
1047 #endif /* CONFIG_P2P */
1048
1049 #ifdef CONFIG_WPS
1050                 wpas_wps_cancel(wpa_s);
1051 #endif /* CONFIG_WPS */
1052                 return -1;
1053         }
1054
1055         wpa_msg(wpa_s, MSG_DEBUG,
1056                 "Considering connect request: reassociate: %d  selected: "
1057                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1058                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1059                 wpa_s->reassociate, MAC2STR(selected->bssid),
1060                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1061                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1062                 ssid, wpa_s->current_ssid);
1063
1064         /*
1065          * Do not trigger new association unless the BSSID has changed or if
1066          * reassociation is requested. If we are in process of associating with
1067          * the selected BSSID, do not trigger new attempt.
1068          */
1069         if (wpa_s->reassociate ||
1070             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1071              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1072                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1073               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1074                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1075                0) ||
1076               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1077                ssid != wpa_s->current_ssid)))) {
1078                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1079                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1080                         return 0;
1081                 }
1082                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1083                         MAC2STR(selected->bssid));
1084                 wpa_supplicant_associate(wpa_s, selected, ssid);
1085         } else {
1086                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1087                         "connect with the selected AP");
1088         }
1089
1090         return 0;
1091 }
1092
1093
1094 static struct wpa_ssid *
1095 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1096 {
1097         int prio;
1098         struct wpa_ssid *ssid;
1099
1100         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1101                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1102                 {
1103                         if (wpas_network_disabled(wpa_s, ssid))
1104                                 continue;
1105                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1106                             ssid->mode == IEEE80211_MODE_AP ||
1107                             ssid->mode == IEEE80211_MODE_MESH)
1108                                 return ssid;
1109                 }
1110         }
1111         return NULL;
1112 }
1113
1114
1115 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1116  * on BSS added and BSS changed events */
1117 static void wpa_supplicant_rsn_preauth_scan_results(
1118         struct wpa_supplicant *wpa_s)
1119 {
1120         struct wpa_bss *bss;
1121
1122         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1123                 return;
1124
1125         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1126                 const u8 *ssid, *rsn;
1127
1128                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1129                 if (ssid == NULL)
1130                         continue;
1131
1132                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1133                 if (rsn == NULL)
1134                         continue;
1135
1136                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1137         }
1138
1139 }
1140
1141
1142 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1143                                        struct wpa_bss *selected,
1144                                        struct wpa_ssid *ssid)
1145 {
1146         struct wpa_bss *current_bss = NULL;
1147         int min_diff;
1148
1149         if (wpa_s->reassociate)
1150                 return 1; /* explicit request to reassociate */
1151         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1152                 return 1; /* we are not associated; continue */
1153         if (wpa_s->current_ssid == NULL)
1154                 return 1; /* unknown current SSID */
1155         if (wpa_s->current_ssid != ssid)
1156                 return 1; /* different network block */
1157
1158         if (wpas_driver_bss_selection(wpa_s))
1159                 return 0; /* Driver-based roaming */
1160
1161         if (wpa_s->current_ssid->ssid)
1162                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1163                                           wpa_s->current_ssid->ssid,
1164                                           wpa_s->current_ssid->ssid_len);
1165         if (!current_bss)
1166                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1167
1168         if (!current_bss)
1169                 return 1; /* current BSS not seen in scan results */
1170
1171         if (current_bss == selected)
1172                 return 0;
1173
1174         if (selected->last_update_idx > current_bss->last_update_idx)
1175                 return 1; /* current BSS not seen in the last scan */
1176
1177 #ifndef CONFIG_NO_ROAMING
1178         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1179         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1180                 MAC2STR(current_bss->bssid), current_bss->level);
1181         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1182                 MAC2STR(selected->bssid), selected->level);
1183
1184         if (wpa_s->current_ssid->bssid_set &&
1185             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1186             0) {
1187                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1188                         "has preferred BSSID");
1189                 return 1;
1190         }
1191
1192         if (current_bss->level < 0 && current_bss->level > selected->level) {
1193                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1194                         "signal level");
1195                 return 0;
1196         }
1197
1198         min_diff = 2;
1199         if (current_bss->level < 0) {
1200                 if (current_bss->level < -85)
1201                         min_diff = 1;
1202                 else if (current_bss->level < -80)
1203                         min_diff = 2;
1204                 else if (current_bss->level < -75)
1205                         min_diff = 3;
1206                 else if (current_bss->level < -70)
1207                         min_diff = 4;
1208                 else
1209                         min_diff = 5;
1210         }
1211         if (abs(current_bss->level - selected->level) < min_diff) {
1212                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1213                         "in signal level");
1214                 return 0;
1215         }
1216
1217         return 1;
1218 #else /* CONFIG_NO_ROAMING */
1219         return 0;
1220 #endif /* CONFIG_NO_ROAMING */
1221 }
1222
1223
1224 /* Return != 0 if no scan results could be fetched or if scan results should not
1225  * be shared with other virtual interfaces. */
1226 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1227                                               union wpa_event_data *data,
1228                                               int own_request)
1229 {
1230         struct wpa_scan_results *scan_res = NULL;
1231         int ret = 0;
1232         int ap = 0;
1233 #ifndef CONFIG_NO_RANDOM_POOL
1234         size_t i, num;
1235 #endif /* CONFIG_NO_RANDOM_POOL */
1236
1237 #ifdef CONFIG_AP
1238         if (wpa_s->ap_iface)
1239                 ap = 1;
1240 #endif /* CONFIG_AP */
1241
1242         wpa_supplicant_notify_scanning(wpa_s, 0);
1243
1244         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1245                                                    data ? &data->scan_info :
1246                                                    NULL, 1);
1247         if (scan_res == NULL) {
1248                 if (wpa_s->conf->ap_scan == 2 || ap ||
1249                     wpa_s->scan_res_handler == scan_only_handler)
1250                         return -1;
1251                 if (!own_request)
1252                         return -1;
1253                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1254                         "scanning again");
1255                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1256                 ret = -1;
1257                 goto scan_work_done;
1258         }
1259
1260 #ifndef CONFIG_NO_RANDOM_POOL
1261         num = scan_res->num;
1262         if (num > 10)
1263                 num = 10;
1264         for (i = 0; i < num; i++) {
1265                 u8 buf[5];
1266                 struct wpa_scan_res *res = scan_res->res[i];
1267                 buf[0] = res->bssid[5];
1268                 buf[1] = res->qual & 0xff;
1269                 buf[2] = res->noise & 0xff;
1270                 buf[3] = res->level & 0xff;
1271                 buf[4] = res->tsf & 0xff;
1272                 random_add_randomness(buf, sizeof(buf));
1273         }
1274 #endif /* CONFIG_NO_RANDOM_POOL */
1275
1276         if (own_request && wpa_s->scan_res_handler &&
1277             (wpa_s->own_scan_running || !wpa_s->external_scan_running)) {
1278                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1279                                          struct wpa_scan_results *scan_res);
1280
1281                 scan_res_handler = wpa_s->scan_res_handler;
1282                 wpa_s->scan_res_handler = NULL;
1283                 scan_res_handler(wpa_s, scan_res);
1284                 ret = -2;
1285                 goto scan_work_done;
1286         }
1287
1288         if (ap) {
1289                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1290 #ifdef CONFIG_AP
1291                 if (wpa_s->ap_iface->scan_cb)
1292                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1293 #endif /* CONFIG_AP */
1294                 goto scan_work_done;
1295         }
1296
1297         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1298                 wpa_s->own_scan_running, wpa_s->external_scan_running);
1299         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1300             wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1301                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1302                              wpa_s->manual_scan_id);
1303                 wpa_s->manual_scan_use_id = 0;
1304         } else {
1305                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1306         }
1307         wpas_notify_scan_results(wpa_s);
1308
1309         wpas_notify_scan_done(wpa_s, 1);
1310
1311         if (!wpa_s->own_scan_running && wpa_s->external_scan_running) {
1312                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1313                 wpa_scan_results_free(scan_res);
1314                 return 0;
1315         }
1316
1317         if (sme_proc_obss_scan(wpa_s) > 0)
1318                 goto scan_work_done;
1319
1320         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1321                 goto scan_work_done;
1322
1323         if (autoscan_notify_scan(wpa_s, scan_res))
1324                 goto scan_work_done;
1325
1326         if (wpa_s->disconnected) {
1327                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1328                 goto scan_work_done;
1329         }
1330
1331         if (!wpas_driver_bss_selection(wpa_s) &&
1332             bgscan_notify_scan(wpa_s, scan_res) == 1)
1333                 goto scan_work_done;
1334
1335         wpas_wps_update_ap_info(wpa_s, scan_res);
1336
1337         wpa_scan_results_free(scan_res);
1338
1339         if (wpa_s->scan_work) {
1340                 struct wpa_radio_work *work = wpa_s->scan_work;
1341                 wpa_s->scan_work = NULL;
1342                 radio_work_done(work);
1343         }
1344
1345         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1346
1347 scan_work_done:
1348         wpa_scan_results_free(scan_res);
1349         if (wpa_s->scan_work) {
1350                 struct wpa_radio_work *work = wpa_s->scan_work;
1351                 wpa_s->scan_work = NULL;
1352                 radio_work_done(work);
1353         }
1354         return ret;
1355 }
1356
1357
1358 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1359                                               int new_scan, int own_request)
1360 {
1361         struct wpa_bss *selected;
1362         struct wpa_ssid *ssid = NULL;
1363
1364         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1365
1366         if (selected) {
1367                 int skip;
1368                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1369                 if (skip) {
1370                         if (new_scan)
1371                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1372                         return 0;
1373                 }
1374
1375                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1376                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1377                         return -1;
1378                 }
1379                 if (new_scan)
1380                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1381                 /*
1382                  * Do not notify other virtual radios of scan results since we do not
1383                  * want them to start other associations at the same time.
1384                  */
1385                 return 1;
1386         } else {
1387 #ifdef CONFIG_MESH
1388                 if (wpa_s->ifmsh) {
1389                         wpa_msg(wpa_s, MSG_INFO,
1390                                 "Avoiding join because we already joined a mesh group");
1391                         return 0;
1392                 }
1393 #endif /* CONFIG_MESH */
1394                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1395                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1396                 if (ssid) {
1397                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1398                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1399                         if (new_scan)
1400                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1401                 } else if (own_request) {
1402                         /*
1403                          * No SSID found. If SCAN results are as a result of
1404                          * own scan request and not due to a scan request on
1405                          * another shared interface, try another scan.
1406                          */
1407                         int timeout_sec = wpa_s->scan_interval;
1408                         int timeout_usec = 0;
1409 #ifdef CONFIG_P2P
1410                         if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1411                                 return 0;
1412
1413                         if (wpa_s->p2p_in_provisioning ||
1414                             wpa_s->show_group_started ||
1415                             wpa_s->p2p_in_invitation) {
1416                                 /*
1417                                  * Use shorter wait during P2P Provisioning
1418                                  * state and during P2P join-a-group operation
1419                                  * to speed up group formation.
1420                                  */
1421                                 timeout_sec = 0;
1422                                 timeout_usec = 250000;
1423                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1424                                                             timeout_usec);
1425                                 return 0;
1426                         }
1427 #endif /* CONFIG_P2P */
1428 #ifdef CONFIG_INTERWORKING
1429                         if (wpa_s->conf->auto_interworking &&
1430                             wpa_s->conf->interworking &&
1431                             wpa_s->conf->cred) {
1432                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1433                                         "start ANQP fetch since no matching "
1434                                         "networks found");
1435                                 wpa_s->network_select = 1;
1436                                 wpa_s->auto_network_select = 1;
1437                                 interworking_start_fetch_anqp(wpa_s);
1438                                 return 1;
1439                         }
1440 #endif /* CONFIG_INTERWORKING */
1441 #ifdef CONFIG_WPS
1442                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1443                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1444                                 timeout_sec = 0;
1445                                 timeout_usec = 500000;
1446                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1447                                                             timeout_usec);
1448                                 return 0;
1449                         }
1450 #endif /* CONFIG_WPS */
1451                         if (wpa_supplicant_req_sched_scan(wpa_s))
1452                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1453                                                             timeout_usec);
1454                 }
1455         }
1456         return 0;
1457 }
1458
1459
1460 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1461                                               union wpa_event_data *data)
1462 {
1463         struct wpa_supplicant *ifs;
1464
1465         if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
1466                 /*
1467                  * If no scan results could be fetched, then no need to
1468                  * notify those interfaces that did not actually request
1469                  * this scan. Similarly, if scan results started a new operation on this
1470                  * interface, do not notify other interfaces to avoid concurrent
1471                  * operations during a connection attempt.
1472                  */
1473                 return;
1474         }
1475
1476         /*
1477          * Check other interfaces to see if they share the same radio. If
1478          * so, they get updated with this same scan info.
1479          */
1480         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1481                          radio_list) {
1482                 if (ifs != wpa_s) {
1483                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1484                                    "sibling", ifs->ifname);
1485                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1486                 }
1487         }
1488 }
1489
1490 #endif /* CONFIG_NO_SCAN_PROCESSING */
1491
1492
1493 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1494 {
1495 #ifdef CONFIG_NO_SCAN_PROCESSING
1496         return -1;
1497 #else /* CONFIG_NO_SCAN_PROCESSING */
1498         struct os_reltime now;
1499
1500         if (wpa_s->last_scan_res_used <= 0)
1501                 return -1;
1502
1503         os_get_reltime(&now);
1504         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1505                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1506                 return -1;
1507         }
1508
1509         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1510 #endif /* CONFIG_NO_SCAN_PROCESSING */
1511 }
1512
1513 #ifdef CONFIG_WNM
1514
1515 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1516 {
1517         struct wpa_supplicant *wpa_s = eloop_ctx;
1518
1519         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1520                 return;
1521
1522         if (!wpa_s->no_keep_alive) {
1523                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1524                            MAC2STR(wpa_s->bssid));
1525                 /* TODO: could skip this if normal data traffic has been sent */
1526                 /* TODO: Consider using some more appropriate data frame for
1527                  * this */
1528                 if (wpa_s->l2)
1529                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1530                                        (u8 *) "", 0);
1531         }
1532
1533 #ifdef CONFIG_SME
1534         if (wpa_s->sme.bss_max_idle_period) {
1535                 unsigned int msec;
1536                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1537                 if (msec > 100)
1538                         msec -= 100;
1539                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1540                                        wnm_bss_keep_alive, wpa_s, NULL);
1541         }
1542 #endif /* CONFIG_SME */
1543 }
1544
1545
1546 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1547                                    const u8 *ies, size_t ies_len)
1548 {
1549         struct ieee802_11_elems elems;
1550
1551         if (ies == NULL)
1552                 return;
1553
1554         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1555                 return;
1556
1557 #ifdef CONFIG_SME
1558         if (elems.bss_max_idle_period) {
1559                 unsigned int msec;
1560                 wpa_s->sme.bss_max_idle_period =
1561                         WPA_GET_LE16(elems.bss_max_idle_period);
1562                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1563                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1564                            (elems.bss_max_idle_period[2] & 0x01) ?
1565                            " (protected keep-live required)" : "");
1566                 if (wpa_s->sme.bss_max_idle_period == 0)
1567                         wpa_s->sme.bss_max_idle_period = 1;
1568                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1569                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1570                          /* msec times 1000 */
1571                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1572                         if (msec > 100)
1573                                 msec -= 100;
1574                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1575                                                wnm_bss_keep_alive, wpa_s,
1576                                                NULL);
1577                 }
1578         }
1579 #endif /* CONFIG_SME */
1580 }
1581
1582 #endif /* CONFIG_WNM */
1583
1584
1585 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1586 {
1587 #ifdef CONFIG_WNM
1588         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1589 #endif /* CONFIG_WNM */
1590 }
1591
1592
1593 #ifdef CONFIG_INTERWORKING
1594
1595 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1596                             size_t len)
1597 {
1598         int res;
1599
1600         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1601         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1602         if (res) {
1603                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1604         }
1605
1606         return res;
1607 }
1608
1609
1610 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1611                                             const u8 *ies, size_t ies_len)
1612 {
1613         struct ieee802_11_elems elems;
1614
1615         if (ies == NULL)
1616                 return;
1617
1618         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1619                 return;
1620
1621         if (elems.qos_map_set) {
1622                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1623                                  elems.qos_map_set_len);
1624         }
1625 }
1626
1627 #endif /* CONFIG_INTERWORKING */
1628
1629
1630 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1631                                           union wpa_event_data *data)
1632 {
1633         int l, len, found = 0, wpa_found, rsn_found;
1634         const u8 *p;
1635 #ifdef CONFIG_IEEE80211R
1636         u8 bssid[ETH_ALEN];
1637 #endif /* CONFIG_IEEE80211R */
1638
1639         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1640         if (data->assoc_info.req_ies)
1641                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1642                             data->assoc_info.req_ies_len);
1643         if (data->assoc_info.resp_ies) {
1644                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1645                             data->assoc_info.resp_ies_len);
1646 #ifdef CONFIG_TDLS
1647                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1648                                         data->assoc_info.resp_ies_len);
1649 #endif /* CONFIG_TDLS */
1650 #ifdef CONFIG_WNM
1651                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1652                                        data->assoc_info.resp_ies_len);
1653 #endif /* CONFIG_WNM */
1654 #ifdef CONFIG_INTERWORKING
1655                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1656                                                 data->assoc_info.resp_ies_len);
1657 #endif /* CONFIG_INTERWORKING */
1658         }
1659         if (data->assoc_info.beacon_ies)
1660                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1661                             data->assoc_info.beacon_ies,
1662                             data->assoc_info.beacon_ies_len);
1663         if (data->assoc_info.freq)
1664                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1665                         data->assoc_info.freq);
1666
1667         p = data->assoc_info.req_ies;
1668         l = data->assoc_info.req_ies_len;
1669
1670         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1671         while (p && l >= 2) {
1672                 len = p[1] + 2;
1673                 if (len > l) {
1674                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1675                                     p, l);
1676                         break;
1677                 }
1678                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1679                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1680                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1681                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1682                                 break;
1683                         found = 1;
1684                         wpa_find_assoc_pmkid(wpa_s);
1685                         break;
1686                 }
1687                 l -= len;
1688                 p += len;
1689         }
1690         if (!found && data->assoc_info.req_ies)
1691                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1692
1693 #ifdef CONFIG_IEEE80211R
1694 #ifdef CONFIG_SME
1695         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1696                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1697                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1698                                                  data->assoc_info.resp_ies,
1699                                                  data->assoc_info.resp_ies_len,
1700                                                  bssid) < 0) {
1701                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1702                                 "Reassociation Response failed");
1703                         wpa_supplicant_deauthenticate(
1704                                 wpa_s, WLAN_REASON_INVALID_IE);
1705                         return -1;
1706                 }
1707         }
1708
1709         p = data->assoc_info.resp_ies;
1710         l = data->assoc_info.resp_ies_len;
1711
1712 #ifdef CONFIG_WPS_STRICT
1713         if (p && wpa_s->current_ssid &&
1714             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1715                 struct wpabuf *wps;
1716                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1717                 if (wps == NULL) {
1718                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1719                                 "include WPS IE in (Re)Association Response");
1720                         return -1;
1721                 }
1722
1723                 if (wps_validate_assoc_resp(wps) < 0) {
1724                         wpabuf_free(wps);
1725                         wpa_supplicant_deauthenticate(
1726                                 wpa_s, WLAN_REASON_INVALID_IE);
1727                         return -1;
1728                 }
1729                 wpabuf_free(wps);
1730         }
1731 #endif /* CONFIG_WPS_STRICT */
1732
1733         /* Go through the IEs and make a copy of the MDIE, if present. */
1734         while (p && l >= 2) {
1735                 len = p[1] + 2;
1736                 if (len > l) {
1737                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1738                                     p, l);
1739                         break;
1740                 }
1741                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1742                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1743                         wpa_s->sme.ft_used = 1;
1744                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1745                                   MOBILITY_DOMAIN_ID_LEN);
1746                         break;
1747                 }
1748                 l -= len;
1749                 p += len;
1750         }
1751 #endif /* CONFIG_SME */
1752
1753         /* Process FT when SME is in the driver */
1754         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1755             wpa_ft_is_completed(wpa_s->wpa)) {
1756                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1757                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1758                                                  data->assoc_info.resp_ies,
1759                                                  data->assoc_info.resp_ies_len,
1760                                                  bssid) < 0) {
1761                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1762                                 "Reassociation Response failed");
1763                         wpa_supplicant_deauthenticate(
1764                                 wpa_s, WLAN_REASON_INVALID_IE);
1765                         return -1;
1766                 }
1767                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1768         }
1769
1770         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1771                              data->assoc_info.resp_ies_len);
1772 #endif /* CONFIG_IEEE80211R */
1773
1774         /* WPA/RSN IE from Beacon/ProbeResp */
1775         p = data->assoc_info.beacon_ies;
1776         l = data->assoc_info.beacon_ies_len;
1777
1778         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1779          */
1780         wpa_found = rsn_found = 0;
1781         while (p && l >= 2) {
1782                 len = p[1] + 2;
1783                 if (len > l) {
1784                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1785                                     p, l);
1786                         break;
1787                 }
1788                 if (!wpa_found &&
1789                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1790                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1791                         wpa_found = 1;
1792                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1793                 }
1794
1795                 if (!rsn_found &&
1796                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1797                         rsn_found = 1;
1798                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1799                 }
1800
1801                 l -= len;
1802                 p += len;
1803         }
1804
1805         if (!wpa_found && data->assoc_info.beacon_ies)
1806                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1807         if (!rsn_found && data->assoc_info.beacon_ies)
1808                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1809         if (wpa_found || rsn_found)
1810                 wpa_s->ap_ies_from_associnfo = 1;
1811
1812         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1813             wpa_s->assoc_freq != data->assoc_info.freq) {
1814                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1815                            "%u to %u MHz",
1816                            wpa_s->assoc_freq, data->assoc_info.freq);
1817                 wpa_supplicant_update_scan_results(wpa_s);
1818         }
1819
1820         wpa_s->assoc_freq = data->assoc_info.freq;
1821
1822         return 0;
1823 }
1824
1825
1826 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1827 {
1828         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1829
1830         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1831                 return -1;
1832
1833         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1834                 return 0;
1835
1836         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1837                                         WPA_IE_VENDOR_TYPE);
1838         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1839
1840         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1841                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1842             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1843                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1844                 return -1;
1845
1846         return 0;
1847 }
1848
1849
1850 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1851                                        union wpa_event_data *data)
1852 {
1853         u8 bssid[ETH_ALEN];
1854         int ft_completed;
1855
1856 #ifdef CONFIG_AP
1857         if (wpa_s->ap_iface) {
1858                 if (!data)
1859                         return;
1860                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1861                                     data->assoc_info.addr,
1862                                     data->assoc_info.req_ies,
1863                                     data->assoc_info.req_ies_len,
1864                                     data->assoc_info.reassoc);
1865                 return;
1866         }
1867 #endif /* CONFIG_AP */
1868
1869         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1870         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1871                 return;
1872
1873         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1874                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1875                 wpa_supplicant_deauthenticate(
1876                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1877                 return;
1878         }
1879
1880         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1881         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1882                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1883                         MACSTR, MAC2STR(bssid));
1884                 random_add_randomness(bssid, ETH_ALEN);
1885                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1886                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1887                 wpas_notify_bssid_changed(wpa_s);
1888
1889                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1890                         wpa_clear_keys(wpa_s, bssid);
1891                 }
1892                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1893                         wpa_supplicant_deauthenticate(
1894                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1895                         return;
1896                 }
1897
1898                 if (wpa_s->conf->ap_scan == 1 &&
1899                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1900                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1901                                 wpa_msg(wpa_s, MSG_WARNING,
1902                                         "WPA/RSN IEs not updated");
1903                 }
1904         }
1905
1906 #ifdef CONFIG_SME
1907         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1908         wpa_s->sme.prev_bssid_set = 1;
1909         wpa_s->sme.last_unprot_disconnect.sec = 0;
1910 #endif /* CONFIG_SME */
1911
1912         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1913         if (wpa_s->current_ssid) {
1914                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1915                  * initialized before association, but for other modes,
1916                  * initialize PC/SC here, if the current configuration needs
1917                  * smartcard or SIM/USIM. */
1918                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1919         }
1920         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1921         if (wpa_s->l2)
1922                 l2_packet_notify_auth_start(wpa_s->l2);
1923
1924         /*
1925          * Set portEnabled first to FALSE in order to get EAP state machine out
1926          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1927          * state machine may transit to AUTHENTICATING state based on obsolete
1928          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1929          * AUTHENTICATED without ever giving chance to EAP state machine to
1930          * reset the state.
1931          */
1932         if (!ft_completed) {
1933                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1934                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1935         }
1936         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1937                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1938         /* 802.1X::portControl = Auto */
1939         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1940         wpa_s->eapol_received = 0;
1941         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1942             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1943             (wpa_s->current_ssid &&
1944              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1945                 if (wpa_s->current_ssid &&
1946                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
1947                     (wpa_s->drv_flags &
1948                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1949                         /*
1950                          * Set the key after having received joined-IBSS event
1951                          * from the driver.
1952                          */
1953                         wpa_supplicant_set_wpa_none_key(wpa_s,
1954                                                         wpa_s->current_ssid);
1955                 }
1956                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1957                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1958         } else if (!ft_completed) {
1959                 /* Timeout for receiving the first EAPOL packet */
1960                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1961         }
1962         wpa_supplicant_cancel_scan(wpa_s);
1963
1964         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1965             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1966                 /*
1967                  * We are done; the driver will take care of RSN 4-way
1968                  * handshake.
1969                  */
1970                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1971                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1972                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1973                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1974         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1975                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1976                 /*
1977                  * The driver will take care of RSN 4-way handshake, so we need
1978                  * to allow EAPOL supplicant to complete its work without
1979                  * waiting for WPA supplicant.
1980                  */
1981                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1982         } else if (ft_completed) {
1983                 /*
1984                  * FT protocol completed - make sure EAPOL state machine ends
1985                  * up in authenticated.
1986                  */
1987                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1988                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1989                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1990                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1991         }
1992
1993         wpa_s->last_eapol_matches_bssid = 0;
1994
1995         if (wpa_s->pending_eapol_rx) {
1996                 struct os_reltime now, age;
1997                 os_get_reltime(&now);
1998                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1999                 if (age.sec == 0 && age.usec < 100000 &&
2000                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2001                     0) {
2002                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2003                                 "frame that was received just before "
2004                                 "association notification");
2005                         wpa_supplicant_rx_eapol(
2006                                 wpa_s, wpa_s->pending_eapol_rx_src,
2007                                 wpabuf_head(wpa_s->pending_eapol_rx),
2008                                 wpabuf_len(wpa_s->pending_eapol_rx));
2009                 }
2010                 wpabuf_free(wpa_s->pending_eapol_rx);
2011                 wpa_s->pending_eapol_rx = NULL;
2012         }
2013
2014         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2015              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2016             wpa_s->current_ssid &&
2017             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2018                 /* Set static WEP keys again */
2019                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2020         }
2021
2022 #ifdef CONFIG_IBSS_RSN
2023         if (wpa_s->current_ssid &&
2024             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2025             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2026             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2027             wpa_s->ibss_rsn == NULL) {
2028                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2029                 if (!wpa_s->ibss_rsn) {
2030                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2031                         wpa_supplicant_deauthenticate(
2032                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2033                         return;
2034                 }
2035
2036                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2037         }
2038 #endif /* CONFIG_IBSS_RSN */
2039
2040         wpas_wps_notify_assoc(wpa_s, bssid);
2041
2042         if (data) {
2043                 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2044                                     data->assoc_info.resp_ies_len,
2045                                     &data->assoc_info.wmm_params);
2046         }
2047 }
2048
2049
2050 static int disconnect_reason_recoverable(u16 reason_code)
2051 {
2052         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2053                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2054                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2055 }
2056
2057
2058 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2059                                           u16 reason_code,
2060                                           int locally_generated)
2061 {
2062         const u8 *bssid;
2063
2064         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2065                 /*
2066                  * At least Host AP driver and a Prism3 card seemed to be
2067                  * generating streams of disconnected events when configuring
2068                  * IBSS for WPA-None. Ignore them for now.
2069                  */
2070                 return;
2071         }
2072
2073         bssid = wpa_s->bssid;
2074         if (is_zero_ether_addr(bssid))
2075                 bssid = wpa_s->pending_bssid;
2076
2077         if (!is_zero_ether_addr(bssid) ||
2078             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2079                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2080                         " reason=%d%s",
2081                         MAC2STR(bssid), reason_code,
2082                         locally_generated ? " locally_generated=1" : "");
2083         }
2084 }
2085
2086
2087 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2088                                  int locally_generated)
2089 {
2090         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2091             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2092                 return 0; /* Not in 4-way handshake with PSK */
2093
2094         /*
2095          * It looks like connection was lost while trying to go through PSK
2096          * 4-way handshake. Filter out known disconnection cases that are caused
2097          * by something else than PSK mismatch to avoid confusing reports.
2098          */
2099
2100         if (locally_generated) {
2101                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2102                         return 0;
2103         }
2104
2105         return 1;
2106 }
2107
2108
2109 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2110                                                  u16 reason_code,
2111                                                  int locally_generated)
2112 {
2113         const u8 *bssid;
2114         int authenticating;
2115         u8 prev_pending_bssid[ETH_ALEN];
2116         struct wpa_bss *fast_reconnect = NULL;
2117         struct wpa_ssid *fast_reconnect_ssid = NULL;
2118         struct wpa_ssid *last_ssid;
2119
2120         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2121         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2122
2123         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2124                 /*
2125                  * At least Host AP driver and a Prism3 card seemed to be
2126                  * generating streams of disconnected events when configuring
2127                  * IBSS for WPA-None. Ignore them for now.
2128                  */
2129                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2130                         "IBSS/WPA-None mode");
2131                 return;
2132         }
2133
2134         wmm_ac_notify_disassoc(wpa_s);
2135
2136         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2137                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2138                         "pre-shared key may be incorrect");
2139                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2140                         return; /* P2P group removed */
2141                 wpas_auth_failed(wpa_s, "WRONG_KEY");
2142         }
2143         if (!wpa_s->disconnected &&
2144             (!wpa_s->auto_reconnect_disabled ||
2145              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2146              wpas_wps_searching(wpa_s))) {
2147                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2148                         "reconnect (wps=%d/%d wpa_state=%d)",
2149                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2150                         wpas_wps_searching(wpa_s),
2151                         wpa_s->wpa_state);
2152                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2153                     wpa_s->current_ssid &&
2154                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2155                     !locally_generated &&
2156                     disconnect_reason_recoverable(reason_code)) {
2157                         /*
2158                          * It looks like the AP has dropped association with
2159                          * us, but could allow us to get back in. Try to
2160                          * reconnect to the same BSS without full scan to save
2161                          * time for some common cases.
2162                          */
2163                         fast_reconnect = wpa_s->current_bss;
2164                         fast_reconnect_ssid = wpa_s->current_ssid;
2165                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2166                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2167                 else
2168                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2169                                 "immediate scan");
2170         } else {
2171                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2172                         "try to re-connect");
2173                 wpa_s->reassociate = 0;
2174                 wpa_s->disconnected = 1;
2175                 wpa_supplicant_cancel_sched_scan(wpa_s);
2176         }
2177         bssid = wpa_s->bssid;
2178         if (is_zero_ether_addr(bssid))
2179                 bssid = wpa_s->pending_bssid;
2180         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2181                 wpas_connection_failed(wpa_s, bssid);
2182         wpa_sm_notify_disassoc(wpa_s->wpa);
2183         if (locally_generated)
2184                 wpa_s->disconnect_reason = -reason_code;
2185         else
2186                 wpa_s->disconnect_reason = reason_code;
2187         wpas_notify_disconnect_reason(wpa_s);
2188         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2189                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2190                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2191         }
2192         last_ssid = wpa_s->current_ssid;
2193         wpa_supplicant_mark_disassoc(wpa_s);
2194
2195         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2196                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2197                 wpa_s->current_ssid = last_ssid;
2198         }
2199
2200         if (fast_reconnect &&
2201             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2202             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2203             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2204                              fast_reconnect->ssid_len) &&
2205             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2206 #ifndef CONFIG_NO_SCAN_PROCESSING
2207                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2208                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2209                                            fast_reconnect_ssid) < 0) {
2210                         /* Recover through full scan */
2211                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2212                 }
2213 #endif /* CONFIG_NO_SCAN_PROCESSING */
2214         } else if (fast_reconnect) {
2215                 /*
2216                  * Could not reconnect to the same BSS due to network being
2217                  * disabled. Use a new scan to match the alternative behavior
2218                  * above, i.e., to continue automatic reconnection attempt in a
2219                  * way that enforces disabled network rules.
2220                  */
2221                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2222         }
2223 }
2224
2225
2226 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2227 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2228 {
2229         struct wpa_supplicant *wpa_s = eloop_ctx;
2230
2231         if (!wpa_s->pending_mic_error_report)
2232                 return;
2233
2234         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2235         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2236         wpa_s->pending_mic_error_report = 0;
2237 }
2238 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2239
2240
2241 static void
2242 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2243                                          union wpa_event_data *data)
2244 {
2245         int pairwise;
2246         struct os_reltime t;
2247
2248         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2249         pairwise = (data && data->michael_mic_failure.unicast);
2250         os_get_reltime(&t);
2251         if ((wpa_s->last_michael_mic_error.sec &&
2252              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2253             wpa_s->pending_mic_error_report) {
2254                 if (wpa_s->pending_mic_error_report) {
2255                         /*
2256                          * Send the pending MIC error report immediately since
2257                          * we are going to start countermeasures and AP better
2258                          * do the same.
2259                          */
2260                         wpa_sm_key_request(wpa_s->wpa, 1,
2261                                            wpa_s->pending_mic_error_pairwise);
2262                 }
2263
2264                 /* Send the new MIC error report immediately since we are going
2265                  * to start countermeasures and AP better do the same.
2266                  */
2267                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2268
2269                 /* initialize countermeasures */
2270                 wpa_s->countermeasures = 1;
2271
2272                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2273
2274                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2275
2276                 /*
2277                  * Need to wait for completion of request frame. We do not get
2278                  * any callback for the message completion, so just wait a
2279                  * short while and hope for the best. */
2280                 os_sleep(0, 10000);
2281
2282                 wpa_drv_set_countermeasures(wpa_s, 1);
2283                 wpa_supplicant_deauthenticate(wpa_s,
2284                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2285                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2286                                      wpa_s, NULL);
2287                 eloop_register_timeout(60, 0,
2288                                        wpa_supplicant_stop_countermeasures,
2289                                        wpa_s, NULL);
2290                 /* TODO: mark the AP rejected for 60 second. STA is
2291                  * allowed to associate with another AP.. */
2292         } else {
2293 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2294                 if (wpa_s->mic_errors_seen) {
2295                         /*
2296                          * Reduce the effectiveness of Michael MIC error
2297                          * reports as a means for attacking against TKIP if
2298                          * more than one MIC failure is noticed with the same
2299                          * PTK. We delay the transmission of the reports by a
2300                          * random time between 0 and 60 seconds in order to
2301                          * force the attacker wait 60 seconds before getting
2302                          * the information on whether a frame resulted in a MIC
2303                          * failure.
2304                          */
2305                         u8 rval[4];
2306                         int sec;
2307
2308                         if (os_get_random(rval, sizeof(rval)) < 0)
2309                                 sec = os_random() % 60;
2310                         else
2311                                 sec = WPA_GET_BE32(rval) % 60;
2312                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2313                                 "report %d seconds", sec);
2314                         wpa_s->pending_mic_error_report = 1;
2315                         wpa_s->pending_mic_error_pairwise = pairwise;
2316                         eloop_cancel_timeout(
2317                                 wpa_supplicant_delayed_mic_error_report,
2318                                 wpa_s, NULL);
2319                         eloop_register_timeout(
2320                                 sec, os_random() % 1000000,
2321                                 wpa_supplicant_delayed_mic_error_report,
2322                                 wpa_s, NULL);
2323                 } else {
2324                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2325                 }
2326 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2327                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2328 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2329         }
2330         wpa_s->last_michael_mic_error = t;
2331         wpa_s->mic_errors_seen++;
2332 }
2333
2334
2335 #ifdef CONFIG_TERMINATE_ONLASTIF
2336 static int any_interfaces(struct wpa_supplicant *head)
2337 {
2338         struct wpa_supplicant *wpa_s;
2339
2340         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2341                 if (!wpa_s->interface_removed)
2342                         return 1;
2343         return 0;
2344 }
2345 #endif /* CONFIG_TERMINATE_ONLASTIF */
2346
2347
2348 static void
2349 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2350                                       union wpa_event_data *data)
2351 {
2352         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2353                 return;
2354
2355         switch (data->interface_status.ievent) {
2356         case EVENT_INTERFACE_ADDED:
2357                 if (!wpa_s->interface_removed)
2358                         break;
2359                 wpa_s->interface_removed = 0;
2360                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2361                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2362                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2363                                 "driver after interface was added");
2364                 }
2365                 break;
2366         case EVENT_INTERFACE_REMOVED:
2367                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2368                 wpa_s->interface_removed = 1;
2369                 wpa_supplicant_mark_disassoc(wpa_s);
2370                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2371                 l2_packet_deinit(wpa_s->l2);
2372                 wpa_s->l2 = NULL;
2373 #ifdef CONFIG_TERMINATE_ONLASTIF
2374                 /* check if last interface */
2375                 if (!any_interfaces(wpa_s->global->ifaces))
2376                         eloop_terminate();
2377 #endif /* CONFIG_TERMINATE_ONLASTIF */
2378                 break;
2379         }
2380 }
2381
2382
2383 #ifdef CONFIG_PEERKEY
2384 static void
2385 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2386                               union wpa_event_data *data)
2387 {
2388         if (data == NULL)
2389                 return;
2390         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2391 }
2392 #endif /* CONFIG_PEERKEY */
2393
2394
2395 #ifdef CONFIG_TDLS
2396 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2397                                       union wpa_event_data *data)
2398 {
2399         if (data == NULL)
2400                 return;
2401         switch (data->tdls.oper) {
2402         case TDLS_REQUEST_SETUP:
2403                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2404                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2405                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2406                 else
2407                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2408                 break;
2409         case TDLS_REQUEST_TEARDOWN:
2410                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2411                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2412                                                data->tdls.reason_code);
2413                 else
2414                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2415                                           data->tdls.peer);
2416                 break;
2417         }
2418 }
2419 #endif /* CONFIG_TDLS */
2420
2421
2422 #ifdef CONFIG_WNM
2423 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2424                                      union wpa_event_data *data)
2425 {
2426         if (data == NULL)
2427                 return;
2428         switch (data->wnm.oper) {
2429         case WNM_OPER_SLEEP:
2430                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2431                            "(action=%d, intval=%d)",
2432                            data->wnm.sleep_action, data->wnm.sleep_intval);
2433                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2434                                              data->wnm.sleep_intval, NULL);
2435                 break;
2436         }
2437 }
2438 #endif /* CONFIG_WNM */
2439
2440
2441 #ifdef CONFIG_IEEE80211R
2442 static void
2443 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2444                                  union wpa_event_data *data)
2445 {
2446         if (data == NULL)
2447                 return;
2448
2449         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2450                                     data->ft_ies.ies_len,
2451                                     data->ft_ies.ft_action,
2452                                     data->ft_ies.target_ap,
2453                                     data->ft_ies.ric_ies,
2454                                     data->ft_ies.ric_ies_len) < 0) {
2455                 /* TODO: prevent MLME/driver from trying to associate? */
2456         }
2457 }
2458 #endif /* CONFIG_IEEE80211R */
2459
2460
2461 #ifdef CONFIG_IBSS_RSN
2462 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2463                                                 union wpa_event_data *data)
2464 {
2465         struct wpa_ssid *ssid;
2466         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2467                 return;
2468         if (data == NULL)
2469                 return;
2470         ssid = wpa_s->current_ssid;
2471         if (ssid == NULL)
2472                 return;
2473         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2474                 return;
2475
2476         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2477 }
2478
2479
2480 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2481                                            union wpa_event_data *data)
2482 {
2483         struct wpa_ssid *ssid = wpa_s->current_ssid;
2484
2485         if (ssid == NULL)
2486                 return;
2487
2488         /* check if the ssid is correctly configured as IBSS/RSN */
2489         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2490                 return;
2491
2492         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2493                              data->rx_mgmt.frame_len);
2494 }
2495 #endif /* CONFIG_IBSS_RSN */
2496
2497
2498 #ifdef CONFIG_IEEE80211R
2499 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2500                          size_t len)
2501 {
2502         const u8 *sta_addr, *target_ap_addr;
2503         u16 status;
2504
2505         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2506         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2507                 return; /* only SME case supported for now */
2508         if (len < 1 + 2 * ETH_ALEN + 2)
2509                 return;
2510         if (data[0] != 2)
2511                 return; /* Only FT Action Response is supported for now */
2512         sta_addr = data + 1;
2513         target_ap_addr = data + 1 + ETH_ALEN;
2514         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2515         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2516                 MACSTR " TargetAP " MACSTR " status %u",
2517                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2518
2519         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2520                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2521                         " in FT Action Response", MAC2STR(sta_addr));
2522                 return;
2523         }
2524
2525         if (status) {
2526                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2527                         "failure (status code %d)", status);
2528                 /* TODO: report error to FT code(?) */
2529                 return;
2530         }
2531
2532         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2533                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2534                                     target_ap_addr, NULL, 0) < 0)
2535                 return;
2536
2537 #ifdef CONFIG_SME
2538         {
2539                 struct wpa_bss *bss;
2540                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2541                 if (bss)
2542                         wpa_s->sme.freq = bss->freq;
2543                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2544                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2545                               WLAN_AUTH_FT);
2546         }
2547 #endif /* CONFIG_SME */
2548 }
2549 #endif /* CONFIG_IEEE80211R */
2550
2551
2552 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2553                                                struct unprot_deauth *e)
2554 {
2555 #ifdef CONFIG_IEEE80211W
2556         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2557                    "dropped: " MACSTR " -> " MACSTR
2558                    " (reason code %u)",
2559                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2560         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2561 #endif /* CONFIG_IEEE80211W */
2562 }
2563
2564
2565 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2566                                                  struct unprot_disassoc *e)
2567 {
2568 #ifdef CONFIG_IEEE80211W
2569         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2570                    "dropped: " MACSTR " -> " MACSTR
2571                    " (reason code %u)",
2572                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2573         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2574 #endif /* CONFIG_IEEE80211W */
2575 }
2576
2577
2578 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2579                                   u16 reason_code, int locally_generated,
2580                                   const u8 *ie, size_t ie_len, int deauth)
2581 {
2582 #ifdef CONFIG_AP
2583         if (wpa_s->ap_iface && addr) {
2584                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2585                 return;
2586         }
2587
2588         if (wpa_s->ap_iface) {
2589                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2590                 return;
2591         }
2592 #endif /* CONFIG_AP */
2593
2594         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2595
2596         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2597               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2598                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2599                eapol_sm_failed(wpa_s->eapol))) &&
2600              !wpa_s->eap_expected_failure))
2601                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2602
2603 #ifdef CONFIG_P2P
2604         if (deauth && reason_code > 0) {
2605                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2606                                           locally_generated) > 0) {
2607                         /*
2608                          * The interface was removed, so cannot continue
2609                          * processing any additional operations after this.
2610                          */
2611                         return;
2612                 }
2613         }
2614 #endif /* CONFIG_P2P */
2615
2616         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2617                                              locally_generated);
2618 }
2619
2620
2621 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2622                                 struct disassoc_info *info)
2623 {
2624         u16 reason_code = 0;
2625         int locally_generated = 0;
2626         const u8 *addr = NULL;
2627         const u8 *ie = NULL;
2628         size_t ie_len = 0;
2629
2630         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2631
2632         if (info) {
2633                 addr = info->addr;
2634                 ie = info->ie;
2635                 ie_len = info->ie_len;
2636                 reason_code = info->reason_code;
2637                 locally_generated = info->locally_generated;
2638                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2639                         locally_generated ? " (locally generated)" : "");
2640                 if (addr)
2641                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2642                                 MAC2STR(addr));
2643                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2644                             ie, ie_len);
2645         }
2646
2647 #ifdef CONFIG_AP
2648         if (wpa_s->ap_iface && info && info->addr) {
2649                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2650                 return;
2651         }
2652
2653         if (wpa_s->ap_iface) {
2654                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2655                 return;
2656         }
2657 #endif /* CONFIG_AP */
2658
2659 #ifdef CONFIG_P2P
2660         if (info) {
2661                 wpas_p2p_disassoc_notif(
2662                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2663                         locally_generated);
2664         }
2665 #endif /* CONFIG_P2P */
2666
2667         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2668                 sme_event_disassoc(wpa_s, info);
2669
2670         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2671                               ie, ie_len, 0);
2672 }
2673
2674
2675 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2676                               struct deauth_info *info)
2677 {
2678         u16 reason_code = 0;
2679         int locally_generated = 0;
2680         const u8 *addr = NULL;
2681         const u8 *ie = NULL;
2682         size_t ie_len = 0;
2683
2684         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2685
2686         if (info) {
2687                 addr = info->addr;
2688                 ie = info->ie;
2689                 ie_len = info->ie_len;
2690                 reason_code = info->reason_code;
2691                 locally_generated = info->locally_generated;
2692                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2693                         reason_code,
2694                         locally_generated ? " (locally generated)" : "");
2695                 if (addr) {
2696                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2697                                 MAC2STR(addr));
2698                 }
2699                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2700                             ie, ie_len);
2701         }
2702
2703         wpa_reset_ft_completed(wpa_s->wpa);
2704
2705         wpas_event_disconnect(wpa_s, addr, reason_code,
2706                               locally_generated, ie, ie_len, 1);
2707 }
2708
2709
2710 static const char * reg_init_str(enum reg_change_initiator init)
2711 {
2712         switch (init) {
2713         case REGDOM_SET_BY_CORE:
2714                 return "CORE";
2715         case REGDOM_SET_BY_USER:
2716                 return "USER";
2717         case REGDOM_SET_BY_DRIVER:
2718                 return "DRIVER";
2719         case REGDOM_SET_BY_COUNTRY_IE:
2720                 return "COUNTRY_IE";
2721         case REGDOM_BEACON_HINT:
2722                 return "BEACON_HINT";
2723         }
2724         return "?";
2725 }
2726
2727
2728 static const char * reg_type_str(enum reg_type type)
2729 {
2730         switch (type) {
2731         case REGDOM_TYPE_UNKNOWN:
2732                 return "UNKNOWN";
2733         case REGDOM_TYPE_COUNTRY:
2734                 return "COUNTRY";
2735         case REGDOM_TYPE_WORLD:
2736                 return "WORLD";
2737         case REGDOM_TYPE_CUSTOM_WORLD:
2738                 return "CUSTOM_WORLD";
2739         case REGDOM_TYPE_INTERSECTION:
2740                 return "INTERSECTION";
2741         }
2742         return "?";
2743 }
2744
2745
2746 static void wpa_supplicant_update_channel_list(
2747         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
2748 {
2749         struct wpa_supplicant *ifs;
2750
2751         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
2752                 reg_init_str(info->initiator), reg_type_str(info->type),
2753                 info->alpha2[0] ? " alpha2=" : "",
2754                 info->alpha2[0] ? info->alpha2 : "");
2755
2756         if (wpa_s->drv_priv == NULL)
2757                 return; /* Ignore event during drv initialization */
2758
2759         free_hw_features(wpa_s);
2760         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2761                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2762
2763         wpas_p2p_update_channel_list(wpa_s);
2764
2765         /*
2766          * Check other interfaces to see if they share the same radio. If
2767          * so, they get updated with this same hw mode info.
2768          */
2769         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2770                          radio_list) {
2771                 if (ifs != wpa_s) {
2772                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2773                                    ifs->ifname);
2774                         free_hw_features(ifs);
2775                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2776                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2777                 }
2778         }
2779 }
2780
2781
2782 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2783                                       const u8 *frame, size_t len, int freq)
2784 {
2785         const struct ieee80211_mgmt *mgmt;
2786         const u8 *payload;
2787         size_t plen;
2788         u8 category;
2789
2790         if (len < IEEE80211_HDRLEN + 2)
2791                 return;
2792
2793         mgmt = (const struct ieee80211_mgmt *) frame;
2794         payload = frame + IEEE80211_HDRLEN;
2795         category = *payload++;
2796         plen = len - IEEE80211_HDRLEN - 1;
2797
2798         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2799                 " Category=%u DataLen=%d freq=%d MHz",
2800                 MAC2STR(mgmt->sa), category, (int) plen, freq);
2801
2802         if (category == WLAN_ACTION_WMM) {
2803                 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
2804                 return;
2805         }
2806
2807 #ifdef CONFIG_IEEE80211R
2808         if (category == WLAN_ACTION_FT) {
2809                 ft_rx_action(wpa_s, payload, plen);
2810                 return;
2811         }
2812 #endif /* CONFIG_IEEE80211R */
2813
2814 #ifdef CONFIG_IEEE80211W
2815 #ifdef CONFIG_SME
2816         if (category == WLAN_ACTION_SA_QUERY) {
2817                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2818                 return;
2819         }
2820 #endif /* CONFIG_SME */
2821 #endif /* CONFIG_IEEE80211W */
2822
2823 #ifdef CONFIG_WNM
2824         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2825                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2826                 return;
2827         }
2828 #endif /* CONFIG_WNM */
2829
2830 #ifdef CONFIG_GAS
2831         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2832              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2833             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2834                          mgmt->u.action.category,
2835                          payload, plen, freq) == 0)
2836                 return;
2837 #endif /* CONFIG_GAS */
2838
2839 #ifdef CONFIG_TDLS
2840         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2841             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2842                 wpa_dbg(wpa_s, MSG_DEBUG,
2843                         "TDLS: Received Discovery Response from " MACSTR,
2844                         MAC2STR(mgmt->sa));
2845                 return;
2846         }
2847 #endif /* CONFIG_TDLS */
2848
2849 #ifdef CONFIG_INTERWORKING
2850         if (category == WLAN_ACTION_QOS && plen >= 1 &&
2851             payload[0] == QOS_QOS_MAP_CONFIG) {
2852                 const u8 *pos = payload + 1;
2853                 size_t qlen = plen - 1;
2854                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2855                         MACSTR, MAC2STR(mgmt->sa));
2856                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2857                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2858                     pos[1] <= qlen - 2 && pos[1] >= 16)
2859                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2860                 return;
2861         }
2862 #endif /* CONFIG_INTERWORKING */
2863
2864         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2865                            category, payload, plen, freq);
2866         if (wpa_s->ifmsh)
2867                 mesh_mpm_action_rx(wpa_s, mgmt, len);
2868 }
2869
2870
2871 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2872                                              union wpa_event_data *event)
2873 {
2874 #ifdef CONFIG_P2P
2875         struct wpa_supplicant *ifs;
2876 #endif /* CONFIG_P2P */
2877         struct wpa_freq_range_list *list;
2878         char *str = NULL;
2879
2880         list = &event->freq_range;
2881
2882         if (list->num)
2883                 str = freq_range_list_str(list);
2884         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2885                 str ? str : "");
2886
2887 #ifdef CONFIG_P2P
2888         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2889                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2890                         __func__);
2891         } else {
2892                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2893                 wpas_p2p_update_channel_list(wpa_s);
2894         }
2895
2896         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2897                 int freq;
2898                 if (!ifs->current_ssid ||
2899                     !ifs->current_ssid->p2p_group ||
2900                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
2901                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
2902                         continue;
2903
2904                 freq = ifs->current_ssid->frequency;
2905                 if (!freq_range_list_includes(list, freq)) {
2906                         wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
2907                                 freq);
2908                         continue;
2909                 }
2910
2911                 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
2912                         freq);
2913                 /* TODO: Consider using CSA or removing the group within
2914                  * wpa_supplicant */
2915                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
2916         }
2917 #endif /* CONFIG_P2P */
2918
2919         os_free(str);
2920 }
2921
2922
2923 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
2924                                             union wpa_event_data *data)
2925 {
2926         wpa_dbg(wpa_s, MSG_DEBUG,
2927                 "Connection authorized by device, previous state %d",
2928                 wpa_s->wpa_state);
2929         if (wpa_s->wpa_state == WPA_ASSOCIATED) {
2930                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2931                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2932                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2933                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2934         }
2935         wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
2936         wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
2937                                data->assoc_info.ptk_kek);
2938 }
2939
2940
2941 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2942                           union wpa_event_data *data)
2943 {
2944         struct wpa_supplicant *wpa_s = ctx;
2945
2946         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2947             event != EVENT_INTERFACE_ENABLED &&
2948             event != EVENT_INTERFACE_STATUS &&
2949             event != EVENT_SCHED_SCAN_STOPPED) {
2950                 wpa_dbg(wpa_s, MSG_DEBUG,
2951                         "Ignore event %s (%d) while interface is disabled",
2952                         event_to_string(event), event);
2953                 return;
2954         }
2955
2956 #ifndef CONFIG_NO_STDOUT_DEBUG
2957 {
2958         int level = MSG_DEBUG;
2959
2960         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2961                 const struct ieee80211_hdr *hdr;
2962                 u16 fc;
2963                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2964                 fc = le_to_host16(hdr->frame_control);
2965                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2966                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2967                         level = MSG_EXCESSIVE;
2968         }
2969
2970         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2971                 event_to_string(event), event);
2972 }
2973 #endif /* CONFIG_NO_STDOUT_DEBUG */
2974
2975         switch (event) {
2976         case EVENT_AUTH:
2977                 sme_event_auth(wpa_s, data);
2978                 break;
2979         case EVENT_ASSOC:
2980                 wpa_supplicant_event_assoc(wpa_s, data);
2981                 if (data && data->assoc_info.authorized)
2982                         wpa_supplicant_event_assoc_auth(wpa_s, data);
2983                 break;
2984         case EVENT_DISASSOC:
2985                 wpas_event_disassoc(wpa_s,
2986                                     data ? &data->disassoc_info : NULL);
2987                 break;
2988         case EVENT_DEAUTH:
2989                 wpas_event_deauth(wpa_s,
2990                                   data ? &data->deauth_info : NULL);
2991                 break;
2992         case EVENT_MICHAEL_MIC_FAILURE:
2993                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2994                 break;
2995 #ifndef CONFIG_NO_SCAN_PROCESSING
2996         case EVENT_SCAN_STARTED:
2997                 os_get_reltime(&wpa_s->scan_start_time);
2998                 if (wpa_s->own_scan_requested) {
2999                         struct os_reltime diff;
3000
3001                         os_reltime_sub(&wpa_s->scan_start_time,
3002                                        &wpa_s->scan_trigger_time, &diff);
3003                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3004                                 diff.sec, diff.usec);
3005                         wpa_s->own_scan_requested = 0;
3006                         wpa_s->own_scan_running = 1;
3007                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3008                             wpa_s->manual_scan_use_id) {
3009                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3010                                              WPA_EVENT_SCAN_STARTED "id=%u",
3011                                              wpa_s->manual_scan_id);
3012                         } else {
3013                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3014                                              WPA_EVENT_SCAN_STARTED);
3015                         }
3016                 } else {
3017                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3018                         wpa_s->external_scan_running = 1;
3019                         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3020                 }
3021                 break;
3022         case EVENT_SCAN_RESULTS:
3023                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
3024                         struct os_reltime now, diff;
3025                         os_get_reltime(&now);
3026                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3027                         wpa_s->scan_start_time.sec = 0;
3028                         wpa_s->scan_start_time.usec = 0;
3029                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3030                                 diff.sec, diff.usec);
3031                 }
3032                 wpa_supplicant_event_scan_results(wpa_s, data);
3033                 wpa_s->own_scan_running = 0;
3034                 wpa_s->external_scan_running = 0;
3035                 radio_work_check_next(wpa_s);
3036                 break;
3037 #endif /* CONFIG_NO_SCAN_PROCESSING */
3038         case EVENT_ASSOCINFO:
3039                 wpa_supplicant_event_associnfo(wpa_s, data);
3040                 break;
3041         case EVENT_INTERFACE_STATUS:
3042                 wpa_supplicant_event_interface_status(wpa_s, data);
3043                 break;
3044         case EVENT_PMKID_CANDIDATE:
3045                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3046                 break;
3047 #ifdef CONFIG_PEERKEY
3048         case EVENT_STKSTART:
3049                 wpa_supplicant_event_stkstart(wpa_s, data);
3050                 break;
3051 #endif /* CONFIG_PEERKEY */
3052 #ifdef CONFIG_TDLS
3053         case EVENT_TDLS:
3054                 wpa_supplicant_event_tdls(wpa_s, data);
3055                 break;
3056 #endif /* CONFIG_TDLS */
3057 #ifdef CONFIG_WNM
3058         case EVENT_WNM:
3059                 wpa_supplicant_event_wnm(wpa_s, data);
3060                 break;
3061 #endif /* CONFIG_WNM */
3062 #ifdef CONFIG_IEEE80211R
3063         case EVENT_FT_RESPONSE:
3064                 wpa_supplicant_event_ft_response(wpa_s, data);
3065                 break;
3066 #endif /* CONFIG_IEEE80211R */
3067 #ifdef CONFIG_IBSS_RSN
3068         case EVENT_IBSS_RSN_START:
3069                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3070                 break;
3071 #endif /* CONFIG_IBSS_RSN */
3072         case EVENT_ASSOC_REJECT:
3073                 if (data->assoc_reject.bssid)
3074                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3075                                 "bssid=" MACSTR " status_code=%u",
3076                                 MAC2STR(data->assoc_reject.bssid),
3077                                 data->assoc_reject.status_code);
3078                 else
3079                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3080                                 "status_code=%u",
3081                                 data->assoc_reject.status_code);
3082                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3083                         sme_event_assoc_reject(wpa_s, data);
3084                 else {
3085                         const u8 *bssid = data->assoc_reject.bssid;
3086                         if (bssid == NULL || is_zero_ether_addr(bssid))
3087                                 bssid = wpa_s->pending_bssid;
3088                         wpas_connection_failed(wpa_s, bssid);
3089                         wpa_supplicant_mark_disassoc(wpa_s);
3090                 }
3091                 break;
3092         case EVENT_AUTH_TIMED_OUT:
3093                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3094                         sme_event_auth_timed_out(wpa_s, data);
3095                 break;
3096         case EVENT_ASSOC_TIMED_OUT:
3097                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3098                         sme_event_assoc_timed_out(wpa_s, data);
3099                 break;
3100         case EVENT_TX_STATUS:
3101                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3102                         " type=%d stype=%d",
3103                         MAC2STR(data->tx_status.dst),
3104                         data->tx_status.type, data->tx_status.stype);
3105 #ifdef CONFIG_AP
3106                 if (wpa_s->ap_iface == NULL) {
3107 #ifdef CONFIG_OFFCHANNEL
3108                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3109                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3110                                 offchannel_send_action_tx_status(
3111                                         wpa_s, data->tx_status.dst,
3112                                         data->tx_status.data,
3113                                         data->tx_status.data_len,
3114                                         data->tx_status.ack ?
3115                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3116                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3117 #endif /* CONFIG_OFFCHANNEL */
3118                         break;
3119                 }
3120 #endif /* CONFIG_AP */
3121 #ifdef CONFIG_OFFCHANNEL
3122                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3123                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3124                 /*
3125                  * Catch TX status events for Action frames we sent via group
3126                  * interface in GO mode.
3127                  */
3128                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3129                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3130                     os_memcmp(wpa_s->parent->pending_action_dst,
3131                               data->tx_status.dst, ETH_ALEN) == 0) {
3132                         offchannel_send_action_tx_status(
3133                                 wpa_s->parent, data->tx_status.dst,
3134                                 data->tx_status.data,
3135                                 data->tx_status.data_len,
3136                                 data->tx_status.ack ?
3137                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3138                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3139                         break;
3140                 }
3141 #endif /* CONFIG_OFFCHANNEL */
3142 #ifdef CONFIG_AP
3143                 switch (data->tx_status.type) {
3144                 case WLAN_FC_TYPE_MGMT:
3145                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3146                                       data->tx_status.data_len,
3147                                       data->tx_status.stype,
3148                                       data->tx_status.ack);
3149                         break;
3150                 case WLAN_FC_TYPE_DATA:
3151                         ap_tx_status(wpa_s, data->tx_status.dst,
3152                                      data->tx_status.data,
3153                                      data->tx_status.data_len,
3154                                      data->tx_status.ack);
3155                         break;
3156                 }
3157 #endif /* CONFIG_AP */
3158                 break;
3159 #ifdef CONFIG_AP
3160         case EVENT_EAPOL_TX_STATUS:
3161                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3162                                    data->eapol_tx_status.data,
3163                                    data->eapol_tx_status.data_len,
3164                                    data->eapol_tx_status.ack);
3165                 break;
3166         case EVENT_DRIVER_CLIENT_POLL_OK:
3167                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3168                 break;
3169         case EVENT_RX_FROM_UNKNOWN:
3170                 if (wpa_s->ap_iface == NULL)
3171                         break;
3172                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3173                                        data->rx_from_unknown.wds);
3174                 break;
3175         case EVENT_CH_SWITCH:
3176                 if (!data)
3177                         break;
3178                 if (!wpa_s->ap_iface) {
3179                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3180                                 "event in non-AP mode");
3181                         break;
3182                 }
3183
3184                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3185                                   data->ch_switch.ht_enabled,
3186                                   data->ch_switch.ch_offset,
3187                                   data->ch_switch.ch_width,
3188                                   data->ch_switch.cf1,
3189                                   data->ch_switch.cf2);
3190                 break;
3191 #endif /* CONFIG_AP */
3192         case EVENT_RX_MGMT: {
3193                 u16 fc, stype;
3194                 const struct ieee80211_mgmt *mgmt;
3195
3196 #ifdef CONFIG_TESTING_OPTIONS
3197                 if (wpa_s->ext_mgmt_frame_handling) {
3198                         struct rx_mgmt *rx = &data->rx_mgmt;
3199                         size_t hex_len = 2 * rx->frame_len + 1;
3200                         char *hex = os_malloc(hex_len);
3201                         if (hex) {
3202                                 wpa_snprintf_hex(hex, hex_len,
3203                                                  rx->frame, rx->frame_len);
3204                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3205                                         rx->freq, rx->datarate, rx->ssi_signal,
3206                                         hex);
3207                                 os_free(hex);
3208                         }
3209                         break;
3210                 }
3211 #endif /* CONFIG_TESTING_OPTIONS */
3212
3213                 mgmt = (const struct ieee80211_mgmt *)
3214                         data->rx_mgmt.frame;
3215                 fc = le_to_host16(mgmt->frame_control);
3216                 stype = WLAN_FC_GET_STYPE(fc);
3217
3218 #ifdef CONFIG_AP
3219                 if (wpa_s->ap_iface == NULL) {
3220 #endif /* CONFIG_AP */
3221 #ifdef CONFIG_P2P
3222                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3223                             data->rx_mgmt.frame_len > 24) {
3224                                 const u8 *src = mgmt->sa;
3225                                 const u8 *ie = mgmt->u.probe_req.variable;
3226                                 size_t ie_len = data->rx_mgmt.frame_len -
3227                                         (mgmt->u.probe_req.variable -
3228                                          data->rx_mgmt.frame);
3229                                 wpas_p2p_probe_req_rx(
3230                                         wpa_s, src, mgmt->da,
3231                                         mgmt->bssid, ie, ie_len,
3232                                         data->rx_mgmt.ssi_signal);
3233                                 break;
3234                         }
3235 #endif /* CONFIG_P2P */
3236 #ifdef CONFIG_IBSS_RSN
3237                         if (wpa_s->current_ssid &&
3238                             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3239                             stype == WLAN_FC_STYPE_AUTH &&
3240                             data->rx_mgmt.frame_len >= 30) {
3241                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3242                                 break;
3243                         }
3244 #endif /* CONFIG_IBSS_RSN */
3245
3246                         if (stype == WLAN_FC_STYPE_ACTION) {
3247                                 wpas_event_rx_mgmt_action(
3248                                         wpa_s, data->rx_mgmt.frame,
3249                                         data->rx_mgmt.frame_len,
3250                                         data->rx_mgmt.freq);
3251                                 break;
3252                         }
3253
3254                         if (wpa_s->ifmsh) {
3255                                 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3256                                 break;
3257                         }
3258
3259                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3260                                 "management frame in non-AP mode");
3261                         break;
3262 #ifdef CONFIG_AP
3263                 }
3264
3265                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3266                     data->rx_mgmt.frame_len > 24) {
3267                         const u8 *ie = mgmt->u.probe_req.variable;
3268                         size_t ie_len = data->rx_mgmt.frame_len -
3269                                 (mgmt->u.probe_req.variable -
3270                                  data->rx_mgmt.frame);
3271
3272                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3273                                          mgmt->bssid, ie, ie_len,
3274                                          data->rx_mgmt.ssi_signal);
3275                 }
3276
3277                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3278 #endif /* CONFIG_AP */
3279                 break;
3280                 }
3281         case EVENT_RX_PROBE_REQ:
3282                 if (data->rx_probe_req.sa == NULL ||
3283                     data->rx_probe_req.ie == NULL)
3284                         break;
3285 #ifdef CONFIG_AP
3286                 if (wpa_s->ap_iface) {
3287                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3288                                              data->rx_probe_req.sa,
3289                                              data->rx_probe_req.da,
3290                                              data->rx_probe_req.bssid,
3291                                              data->rx_probe_req.ie,
3292                                              data->rx_probe_req.ie_len,
3293                                              data->rx_probe_req.ssi_signal);
3294                         break;
3295                 }
3296 #endif /* CONFIG_AP */
3297                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3298                                       data->rx_probe_req.da,
3299                                       data->rx_probe_req.bssid,
3300                                       data->rx_probe_req.ie,
3301                                       data->rx_probe_req.ie_len,
3302                                       data->rx_probe_req.ssi_signal);
3303                 break;
3304         case EVENT_REMAIN_ON_CHANNEL:
3305 #ifdef CONFIG_OFFCHANNEL
3306                 offchannel_remain_on_channel_cb(
3307                         wpa_s, data->remain_on_channel.freq,
3308                         data->remain_on_channel.duration);
3309 #endif /* CONFIG_OFFCHANNEL */
3310                 wpas_p2p_remain_on_channel_cb(
3311                         wpa_s, data->remain_on_channel.freq,
3312                         data->remain_on_channel.duration);
3313                 break;
3314         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3315 #ifdef CONFIG_OFFCHANNEL
3316                 offchannel_cancel_remain_on_channel_cb(
3317                         wpa_s, data->remain_on_channel.freq);
3318 #endif /* CONFIG_OFFCHANNEL */
3319                 wpas_p2p_cancel_remain_on_channel_cb(
3320                         wpa_s, data->remain_on_channel.freq);
3321                 break;
3322         case EVENT_EAPOL_RX:
3323                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3324                                         data->eapol_rx.data,
3325                                         data->eapol_rx.data_len);
3326                 break;
3327         case EVENT_SIGNAL_CHANGE:
3328                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3329                         "above=%d signal=%d noise=%d txrate=%d",
3330                         data->signal_change.above_threshold,
3331                         data->signal_change.current_signal,
3332                         data->signal_change.current_noise,
3333                         data->signal_change.current_txrate);
3334                 bgscan_notify_signal_change(
3335                         wpa_s, data->signal_change.above_threshold,
3336                         data->signal_change.current_signal,
3337                         data->signal_change.current_noise,
3338                         data->signal_change.current_txrate);
3339                 break;
3340         case EVENT_INTERFACE_ENABLED:
3341                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3342                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3343                         wpa_supplicant_update_mac_addr(wpa_s);
3344                         if (wpa_s->p2p_mgmt) {
3345                                 wpa_supplicant_set_state(wpa_s,
3346                                                          WPA_DISCONNECTED);
3347                                 break;
3348                         }
3349
3350 #ifdef CONFIG_AP
3351                         if (!wpa_s->ap_iface) {
3352                                 wpa_supplicant_set_state(wpa_s,
3353                                                          WPA_DISCONNECTED);
3354                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3355                         } else
3356                                 wpa_supplicant_set_state(wpa_s,
3357                                                          WPA_COMPLETED);
3358 #else /* CONFIG_AP */
3359                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3360                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3361 #endif /* CONFIG_AP */
3362                 }
3363                 break;
3364         case EVENT_INTERFACE_DISABLED:
3365                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3366 #ifdef CONFIG_P2P
3367                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3368                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3369                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3370                         /*
3371                          * The interface was externally disabled. Remove
3372                          * it assuming an external entity will start a
3373                          * new session if needed.
3374                          */
3375                         wpas_p2p_disconnect(wpa_s);
3376                         break;
3377                 }
3378                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3379                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3380                         /* This radio work will be cancelled, so clear P2P
3381                          * state as well.
3382                          */
3383                         p2p_stop_find(wpa_s->global->p2p);
3384                 }
3385 #endif /* CONFIG_P2P */
3386
3387                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3388                         /*
3389                          * Indicate disconnection to keep ctrl_iface events
3390                          * consistent.
3391                          */
3392                         wpa_supplicant_event_disassoc(
3393                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3394                 }
3395                 wpa_supplicant_mark_disassoc(wpa_s);
3396                 radio_remove_works(wpa_s, NULL, 0);
3397
3398                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3399                 break;
3400         case EVENT_CHANNEL_LIST_CHANGED:
3401                 wpa_supplicant_update_channel_list(
3402                         wpa_s, &data->channel_list_changed);
3403                 break;
3404         case EVENT_INTERFACE_UNAVAILABLE:
3405                 wpas_p2p_interface_unavailable(wpa_s);
3406                 break;
3407         case EVENT_BEST_CHANNEL:
3408                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3409                         "(%d %d %d)",
3410                         data->best_chan.freq_24, data->best_chan.freq_5,
3411                         data->best_chan.freq_overall);
3412                 wpa_s->best_24_freq = data->best_chan.freq_24;
3413                 wpa_s->best_5_freq = data->best_chan.freq_5;
3414                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3415                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3416                                               data->best_chan.freq_5,
3417                                               data->best_chan.freq_overall);
3418                 break;
3419         case EVENT_UNPROT_DEAUTH:
3420                 wpa_supplicant_event_unprot_deauth(wpa_s,
3421                                                    &data->unprot_deauth);
3422                 break;
3423         case EVENT_UNPROT_DISASSOC:
3424                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3425                                                      &data->unprot_disassoc);
3426                 break;
3427         case EVENT_STATION_LOW_ACK:
3428 #ifdef CONFIG_AP
3429                 if (wpa_s->ap_iface && data)
3430                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3431                                                   data->low_ack.addr);
3432 #endif /* CONFIG_AP */
3433 #ifdef CONFIG_TDLS
3434                 if (data)
3435                         wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3436                                                           data->low_ack.addr);
3437 #endif /* CONFIG_TDLS */
3438                 break;
3439         case EVENT_IBSS_PEER_LOST:
3440 #ifdef CONFIG_IBSS_RSN
3441                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3442 #endif /* CONFIG_IBSS_RSN */
3443                 break;
3444         case EVENT_DRIVER_GTK_REKEY:
3445                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3446                               wpa_s->bssid, ETH_ALEN))
3447                         break;
3448                 if (!wpa_s->wpa)
3449                         break;
3450                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3451                                          data->driver_gtk_rekey.replay_ctr);
3452                 break;
3453         case EVENT_SCHED_SCAN_STOPPED:
3454                 wpa_s->pno = 0;
3455                 wpa_s->sched_scanning = 0;
3456                 wpa_supplicant_notify_scanning(wpa_s, 0);
3457
3458                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3459                         break;
3460
3461                 /*
3462                  * Start a new sched scan to continue searching for more SSIDs
3463                  * either if timed out or PNO schedule scan is pending.
3464                  */
3465                 if (wpa_s->sched_scan_timed_out) {
3466                         wpa_supplicant_req_sched_scan(wpa_s);
3467                 } else if (wpa_s->pno_sched_pending) {
3468                         wpa_s->pno_sched_pending = 0;
3469                         wpas_start_pno(wpa_s);
3470                 }
3471
3472                 break;
3473         case EVENT_WPS_BUTTON_PUSHED:
3474 #ifdef CONFIG_WPS
3475                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3476 #endif /* CONFIG_WPS */
3477                 break;
3478         case EVENT_AVOID_FREQUENCIES:
3479                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3480                 break;
3481         case EVENT_CONNECT_FAILED_REASON:
3482 #ifdef CONFIG_AP
3483                 if (!wpa_s->ap_iface || !data)
3484                         break;
3485                 hostapd_event_connect_failed_reason(
3486                         wpa_s->ap_iface->bss[0],
3487                         data->connect_failed_reason.addr,
3488                         data->connect_failed_reason.code);
3489 #endif /* CONFIG_AP */
3490                 break;
3491         case EVENT_NEW_PEER_CANDIDATE:
3492 #ifdef CONFIG_MESH
3493                 if (!wpa_s->ifmsh || !data)
3494                         break;
3495                 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
3496                                      data->mesh_peer.ies,
3497                                      data->mesh_peer.ie_len);
3498 #endif /* CONFIG_MESH */
3499                 break;
3500         default:
3501                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3502                 break;
3503         }
3504 }