wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eapol_supp/eapol_supp_sm.h"
  19 #include "rsn_supp/wpa.h"
  20 #include "eloop.h"
  21 #include "config.h"
  22 #include "l2_packet/l2_packet.h"
  23 #include "wpa_supplicant_i.h"
  24 #include "driver_i.h"
  25 #include "pcsc_funcs.h"
  26 #include "rsn_supp/preauth.h"
  27 #include "rsn_supp/pmksa_cache.h"
  28 #include "common/wpa_ctrl.h"
  29 #include "eap_peer/eap.h"
  30 #include "ap/hostapd.h"
  31 #include "p2p/p2p.h"
  32 #include "notify.h"
  33 #include "common/ieee802_11_defs.h"
  34 #include "common/ieee802_11_common.h"
  35 #include "crypto/random.h"
  36 #include "blacklist.h"
  37 #include "wpas_glue.h"
  38 #include "wps_supplicant.h"
  39 #include "ibss_rsn.h"
  40 #include "sme.h"
  41 #include "gas_query.h"
  42 #include "p2p_supplicant.h"
  43 #include "bgscan.h"
  44 #include "ap.h"
  45 #include "bss.h"
  46 #include "scan.h"
  47 #include "offchannel.h"
  48
  49
  50 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  51 {
  52         struct wpa_ssid *ssid, *old_ssid;
  53
  54         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  55                 return 0;
  56
  57         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  58                 "information");
  59         ssid = wpa_supplicant_get_ssid(wpa_s);
  60         if (ssid == NULL) {
  61                 wpa_msg(wpa_s, MSG_INFO,
  62                         "No network configuration found for the current AP");
  63                 return -1;
  64         }
  65
  66         if (ssid->disabled) {
  67                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
  68                 return -1;
  69         }
  70
  71         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
  72                 "current AP");
  73         if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
  74                               WPA_KEY_MGMT_WPA_NONE |
  75                               WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
  76                               WPA_KEY_MGMT_PSK_SHA256 |
  77                               WPA_KEY_MGMT_IEEE8021X_SHA256)) {
  78                 u8 wpa_ie[80];
  79                 size_t wpa_ie_len = sizeof(wpa_ie);
  80                 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
  81                                           wpa_ie, &wpa_ie_len);
  82         } else {
  83                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  84         }
  85
  86         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
  87                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
  88         old_ssid = wpa_s->current_ssid;
  89         wpa_s->current_ssid = ssid;
  90         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
  91         wpa_supplicant_initiate_eapol(wpa_s);
  92         if (old_ssid != wpa_s->current_ssid)
  93                 wpas_notify_network_changed(wpa_s);
  94
  95         return 0;
  96 }
  97
  98
  99 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
 100                                                 void *sock_ctx)
 101 {
 102         struct wpa_supplicant *wpa_s = eloop_ctx;
 103
 104         if (wpa_s->countermeasures) {
 105                 wpa_s->countermeasures = 0;
 106                 wpa_drv_set_countermeasures(wpa_s, 0);
 107                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 108                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 109         }
 110 }
 111
 112
 113 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 114 {
 115         int bssid_changed;
 116
 117 #ifdef CONFIG_IBSS_RSN
 118         ibss_rsn_deinit(wpa_s->ibss_rsn);
 119         wpa_s->ibss_rsn = NULL;
 120 #endif /* CONFIG_IBSS_RSN */
 121
 122 #ifdef CONFIG_AP
 123         wpa_supplicant_ap_deinit(wpa_s);
 124 #endif /* CONFIG_AP */
 125
 126         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 127                 return;
 128
 129         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 130         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 131         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 132         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 133         wpa_s->current_bss = NULL;
 134         wpa_s->assoc_freq = 0;
 135 #ifdef CONFIG_IEEE80211R
 136 #ifdef CONFIG_SME
 137         if (wpa_s->sme.ft_ies)
 138                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 139 #endif /* CONFIG_SME */
 140 #endif /* CONFIG_IEEE80211R */
 141
 142         if (bssid_changed)
 143                 wpas_notify_bssid_changed(wpa_s);
 144
 145         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 146         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 147         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 148                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 149         wpa_s->ap_ies_from_associnfo = 0;
 150 }
 151
 152
 153 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 154 {
 155         struct wpa_ie_data ie;
 156         int pmksa_set = -1;
 157         size_t i;
 158
 159         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 160             ie.pmkid == NULL)
 161                 return;
 162
 163         for (i = 0; i < ie.num_pmkid; i++) {
 164                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 165                                                     ie.pmkid + i * PMKID_LEN,
 166                                                     NULL, NULL, 0);
 167                 if (pmksa_set == 0) {
 168                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 169                         break;
 170                 }
 171         }
 172
 173         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 174                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 175 }
 176
 177
 178 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 179                                                  union wpa_event_data *data)
 180 {
 181         if (data == NULL) {
 182                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 183                         "event");
 184                 return;
 185         }
 186         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 187                 " index=%d preauth=%d",
 188                 MAC2STR(data->pmkid_candidate.bssid),
 189                 data->pmkid_candidate.index,
 190                 data->pmkid_candidate.preauth);
 191
 192         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 193                             data->pmkid_candidate.index,
 194                             data->pmkid_candidate.preauth);
 195 }
 196
 197
 198 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 199 {
 200         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 201             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 202                 return 0;
 203
 204 #ifdef IEEE8021X_EAPOL
 205         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 206             wpa_s->current_ssid &&
 207             !(wpa_s->current_ssid->eapol_flags &
 208               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 209                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 210                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 211                  * plaintext or static WEP keys). */
 212                 return 0;
 213         }
 214 #endif /* IEEE8021X_EAPOL */
 215
 216         return 1;
 217 }
 218
 219
 220 /**
 221  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 222  * @wpa_s: pointer to wpa_supplicant data
 223  * @ssid: Configuration data for the network
 224  * Returns: 0 on success, -1 on failure
 225  *
 226  * This function is called when starting authentication with a network that is
 227  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 228  */
 229 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 230                               struct wpa_ssid *ssid)
 231 {
 232 #ifdef IEEE8021X_EAPOL
 233 #ifdef PCSC_FUNCS
 234         int aka = 0, sim = 0, type;
 235
 236         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 237                 return 0;
 238
 239         if (ssid->eap.eap_methods == NULL) {
 240                 sim = 1;
 241                 aka = 1;
 242         } else {
 243                 struct eap_method_type *eap = ssid->eap.eap_methods;
 244                 while (eap->vendor != EAP_VENDOR_IETF ||
 245                        eap->method != EAP_TYPE_NONE) {
 246                         if (eap->vendor == EAP_VENDOR_IETF) {
 247                                 if (eap->method == EAP_TYPE_SIM)
 248                                         sim = 1;
 249                                 else if (eap->method == EAP_TYPE_AKA)
 250                                         aka = 1;
 251                         }
 252                         eap++;
 253                 }
 254         }
 255
 256         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 257                 sim = 0;
 258         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
 259                 aka = 0;
 260
 261         if (!sim && !aka) {
 262                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 263                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 264                         "enabled");
 265                 return 0;
 266         }
 267
 268         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 269                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 270         if (sim && aka)
 271                 type = SCARD_TRY_BOTH;
 272         else if (aka)
 273                 type = SCARD_USIM_ONLY;
 274         else
 275                 type = SCARD_GSM_SIM_ONLY;
 276
 277         wpa_s->scard = scard_init(type);
 278         if (wpa_s->scard == NULL) {
 279                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 280                         "(pcsc-lite)");
 281                 return -1;
 282         }
 283         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 284         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 285 #endif /* PCSC_FUNCS */
 286 #endif /* IEEE8021X_EAPOL */
 287
 288         return 0;
 289 }
 290
 291
 292 #ifndef CONFIG_NO_SCAN_PROCESSING
 293 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
 294                                         struct wpa_ssid *ssid)
 295 {
 296         int i, privacy = 0;
 297
 298         if (ssid->mixed_cell)
 299                 return 1;
 300
 301 #ifdef CONFIG_WPS
 302         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 303                 return 1;
 304 #endif /* CONFIG_WPS */
 305
 306         for (i = 0; i < NUM_WEP_KEYS; i++) {
 307                 if (ssid->wep_key_len[i]) {
 308                         privacy = 1;
 309                         break;
 310                 }
 311         }
 312 #ifdef IEEE8021X_EAPOL
 313         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 314             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 315                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 316                 privacy = 1;
 317 #endif /* IEEE8021X_EAPOL */
 318
 319         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 320                 privacy = 1;
 321
 322         if (bss->caps & IEEE80211_CAP_PRIVACY)
 323                 return privacy;
 324         return !privacy;
 325 }
 326
 327
 328 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 329                                          struct wpa_ssid *ssid,
 330                                          struct wpa_scan_res *bss)
 331 {
 332         struct wpa_ie_data ie;
 333         int proto_match = 0;
 334         const u8 *rsn_ie, *wpa_ie;
 335         int ret;
 336         int wep_ok;
 337
 338         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 339         if (ret >= 0)
 340                 return ret;
 341
 342         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 343         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 344                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 345                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 346                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 347
 348         rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 349         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 350                 proto_match++;
 351
 352                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 353                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 354                                 "failed");
 355                         break;
 356                 }
 357
 358                 if (wep_ok &&
 359                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 360                 {
 361                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 362                                 "in RSN IE");
 363                         return 1;
 364                 }
 365
 366                 if (!(ie.proto & ssid->proto)) {
 367                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 368                                 "mismatch");
 369                         break;
 370                 }
 371
 372                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 373                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 374                                 "cipher mismatch");
 375                         break;
 376                 }
 377
 378                 if (!(ie.group_cipher & ssid->group_cipher)) {
 379                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 380                                 "cipher mismatch");
 381                         break;
 382                 }
 383
 384                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 385                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 386                                 "mismatch");
 387                         break;
 388                 }
 389
 390 #ifdef CONFIG_IEEE80211W
 391                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 392                     ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
 393                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 394                                 "frame protection");
 395                         break;
 396                 }
 397 #endif /* CONFIG_IEEE80211W */
 398
 399                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 400                 return 1;
 401         }
 402
 403         wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 404         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 405                 proto_match++;
 406
 407                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 408                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 409                                 "failed");
 410                         break;
 411                 }
 412
 413                 if (wep_ok &&
 414                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 415                 {
 416                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 417                                 "in WPA IE");
 418                         return 1;
 419                 }
 420
 421                 if (!(ie.proto & ssid->proto)) {
 422                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 423                                 "mismatch");
 424                         break;
 425                 }
 426
 427                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 428                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 429                                 "cipher mismatch");
 430                         break;
 431                 }
 432
 433                 if (!(ie.group_cipher & ssid->group_cipher)) {
 434                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 435                                 "cipher mismatch");
 436                         break;
 437                 }
 438
 439                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 440                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 441                                 "mismatch");
 442                         break;
 443                 }
 444
 445                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 446                 return 1;
 447         }
 448
 449         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 450             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 451                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 452                 return 0;
 453         }
 454
 455         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 456                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 457                 return 1;
 458         }
 459
 460         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 461                 "WPA/WPA2");
 462
 463         return 0;
 464 }
 465
 466
 467 static int freq_allowed(int *freqs, int freq)
 468 {
 469         int i;
 470
 471         if (freqs == NULL)
 472                 return 1;
 473
 474         for (i = 0; freqs[i]; i++)
 475                 if (freqs[i] == freq)
 476                         return 1;
 477         return 0;
 478 }
 479
 480
 481 static int ht_supported(const struct hostapd_hw_modes *mode)
 482 {
 483         if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
 484                 /*
 485                  * The driver did not indicate whether it supports HT. Assume
 486                  * it does to avoid connection issues.
 487                  */
 488                 return 1;
 489         }
 490
 491         /*
 492          * IEEE Std 802.11n-2009 20.1.1:
 493          * An HT non-AP STA shall support all EQM rates for one spatial stream.
 494          */
 495         return mode->mcs_set[0] == 0xff;
 496 }
 497
 498
 499 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_scan_res *bss)
 500 {
 501         const struct hostapd_hw_modes *mode = NULL, *modes;
 502         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 503         const u8 *rate_ie;
 504         int i, j, k;
 505
 506         modes = wpa_s->hw.modes;
 507         if (modes == NULL) {
 508                 /*
 509                  * The driver does not provide any additional information
 510                  * about the utilized hardware, so allow the connection attempt
 511                  * to continue.
 512                  */
 513                 return 1;
 514         }
 515
 516         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 517                 for (j = 0; j < modes[i].num_channels; j++) {
 518                         int freq = modes[i].channels[j].freq;
 519                         if (freq == bss->freq) {
 520                                 if (mode &&
 521                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 522                                         break; /* do not allow 802.11b replace
 523                                                 * 802.11g */
 524                                 mode = &modes[i];
 525                                 break;
 526                         }
 527                 }
 528         }
 529
 530         if (mode == NULL)
 531                 return 0;
 532
 533         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 534                 rate_ie = wpa_scan_get_ie(bss, scan_ie[i]);
 535                 if (rate_ie == NULL)
 536                         continue;
 537
 538                 for (j = 2; j < rate_ie[1] + 2; j++) {
 539                         int flagged = !!(rate_ie[j] & 0x80);
 540                         int r = (rate_ie[j] & 0x7f) * 5;
 541
 542                         /*
 543                          * IEEE Std 802.11n-2009 7.3.2.2:
 544                          * The new BSS Membership selector value is encoded
 545                          * like a legacy basic rate, but it is not a rate and
 546                          * only indicates if the BSS members are required to
 547                          * support the mandatory features of Clause 20 [HT PHY]
 548                          * in order to join the BSS.
 549                          */
 550                         if (flagged && ((rate_ie[j] & 0x7f) ==
 551                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 552                                 if (!ht_supported(mode)) {
 553                                         wpa_dbg(wpa_s, MSG_DEBUG,
 554                                                 "   hardware does not support "
 555                                                 "HT PHY");
 556                                         return 0;
 557                                 }
 558                                 continue;
 559                         }
 560
 561                         if (!flagged)
 562                                 continue;
 563
 564                         /* check for legacy basic rates */
 565                         for (k = 0; k < mode->num_rates; k++) {
 566                                 if (mode->rates[k] == r)
 567                                         break;
 568                         }
 569                         if (k == mode->num_rates) {
 570                                 /*
 571                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 572                                  * order to join a BSS all required rates
 573                                  * have to be supported by the hardware.
 574                                  */
 575                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 576                                         "not support required rate %d.%d Mbps",
 577                                         r / 10, r % 10);
 578                                 return 0;
 579                         }
 580                 }
 581         }
 582
 583         return 1;
 584 }
 585
 586
 587 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 588                                             int i, struct wpa_scan_res *bss,
 589                                             struct wpa_ssid *group)
 590 {
 591         const u8 *ssid_;
 592         u8 wpa_ie_len, rsn_ie_len, ssid_len;
 593         int wpa;
 594         struct wpa_blacklist *e;
 595         const u8 *ie;
 596         struct wpa_ssid *ssid;
 597
 598         ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 599         ssid_ = ie ? ie + 2 : (u8 *) "";
 600         ssid_len = ie ? ie[1] : 0;
 601
 602         ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 603         wpa_ie_len = ie ? ie[1] : 0;
 604
 605         ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 606         rsn_ie_len = ie ? ie[1] : 0;
 607
 608         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 609                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
 610                 i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
 611                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 612                 wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
 613
 614         e = wpa_blacklist_get(wpa_s, bss->bssid);
 615         if (e) {
 616                 int limit = 1;
 617                 if (wpa_supplicant_enabled_networks(wpa_s->conf) == 1) {
 618                         /*
 619                          * When only a single network is enabled, we can
 620                          * trigger blacklisting on the first failure. This
 621                          * should not be done with multiple enabled networks to
 622                          * avoid getting forced to move into a worse ESS on
 623                          * single error if there are no other BSSes of the
 624                          * current ESS.
 625                          */
 626                         limit = 0;
 627                 }
 628                 if (e->count > limit) {
 629                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 630                                 "(count=%d limit=%d)", e->count, limit);
 631                         return NULL;
 632                 }
 633         }
 634
 635         if (ssid_len == 0) {
 636                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 637                 return NULL;
 638         }
 639
 640         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 641
 642         for (ssid = group; ssid; ssid = ssid->pnext) {
 643                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 644
 645                 if (ssid->disabled) {
 646                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 647                         continue;
 648                 }
 649
 650 #ifdef CONFIG_WPS
 651                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 652                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 653                                 "(WPS)");
 654                         continue;
 655                 }
 656
 657                 if (wpa && ssid->ssid_len == 0 &&
 658                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 659                         check_ssid = 0;
 660
 661                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 662                         /* Only allow wildcard SSID match if an AP
 663                          * advertises active WPS operation that matches
 664                          * with our mode. */
 665                         check_ssid = 1;
 666                         if (ssid->ssid_len == 0 &&
 667                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 668                                 check_ssid = 0;
 669                 }
 670 #endif /* CONFIG_WPS */
 671
 672                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 673                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 674                         check_ssid = 0;
 675
 676                 if (check_ssid &&
 677                     (ssid_len != ssid->ssid_len ||
 678                      os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
 679                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 680                         continue;
 681                 }
 682
 683                 if (ssid->bssid_set &&
 684                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 685                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 686                         continue;
 687                 }
 688
 689                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 690                         continue;
 691
 692                 if (!wpa &&
 693                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 694                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 695                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 696                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 697                                 "not allowed");
 698                         continue;
 699                 }
 700
 701                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 702                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 703                                 "mismatch");
 704                         continue;
 705                 }
 706
 707                 if (bss->caps & IEEE80211_CAP_IBSS) {
 708                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - IBSS (adhoc) "
 709                                 "network");
 710                         continue;
 711                 }
 712
 713                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 714                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 715                                 "allowed");
 716                         continue;
 717                 }
 718
 719                 if (!rate_match(wpa_s, bss)) {
 720                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 721                                 "not match");
 722                         continue;
 723                 }
 724
 725 #ifdef CONFIG_P2P
 726                 /*
 727                  * TODO: skip the AP if its P2P IE has Group Formation
 728                  * bit set in the P2P Group Capability Bitmap and we
 729                  * are not in Group Formation with that device.
 730                  */
 731 #endif /* CONFIG_P2P */
 732
 733                 /* Matching configuration found */
 734                 return ssid;
 735         }
 736
 737         /* No matching configuration found */
 738         return NULL;
 739 }
 740
 741
 742 static struct wpa_bss *
 743 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 744                           struct wpa_scan_results *scan_res,
 745                           struct wpa_ssid *group,
 746                           struct wpa_ssid **selected_ssid)
 747 {
 748         size_t i;
 749
 750         wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 751                 group->priority);
 752
 753         for (i = 0; i < scan_res->num; i++) {
 754                 struct wpa_scan_res *bss = scan_res->res[i];
 755                 const u8 *ie, *ssid;
 756                 u8 ssid_len;
 757
 758                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
 759                 if (!*selected_ssid)
 760                         continue;
 761
 762                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 763                 ssid = ie ? ie + 2 : (u8 *) "";
 764                 ssid_len = ie ? ie[1] : 0;
 765
 766                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 767                         " ssid='%s'",
 768                         MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
 769                 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
 770         }
 771
 772         return NULL;
 773 }
 774
 775
 776 static struct wpa_bss *
 777 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 778                             struct wpa_scan_results *scan_res,
 779                             struct wpa_ssid **selected_ssid)
 780 {
 781         struct wpa_bss *selected = NULL;
 782         int prio;
 783
 784         while (selected == NULL) {
 785                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 786                         selected = wpa_supplicant_select_bss(
 787                                 wpa_s, scan_res, wpa_s->conf->pssid[prio],
 788                                 selected_ssid);
 789                         if (selected)
 790                                 break;
 791                 }
 792
 793                 if (selected == NULL && wpa_s->blacklist) {
 794                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
 795                                 "blacklist and try again");
 796                         wpa_blacklist_clear(wpa_s);
 797                         wpa_s->blacklist_cleared++;
 798                 } else if (selected == NULL)
 799                         break;
 800         }
 801
 802         return selected;
 803 }
 804
 805
 806 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 807                                         int timeout_sec, int timeout_usec)
 808 {
 809         if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
 810                 /*
 811                  * No networks are enabled; short-circuit request so
 812                  * we don't wait timeout seconds before transitioning
 813                  * to INACTIVE state.
 814                  */
 815                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 816                 return;
 817         }
 818         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 819 }
 820
 821
 822 void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 823                             struct wpa_bss *selected,
 824                             struct wpa_ssid *ssid)
 825 {
 826         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 827                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 828                         "PBC session overlap");
 829 #ifdef CONFIG_P2P
 830                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
 831                         return;
 832 #endif /* CONFIG_P2P */
 833
 834 #ifdef CONFIG_WPS
 835                 wpas_wps_cancel(wpa_s);
 836 #endif /* CONFIG_WPS */
 837                 return;
 838         }
 839
 840         /*
 841          * Do not trigger new association unless the BSSID has changed or if
 842          * reassociation is requested. If we are in process of associating with
 843          * the selected BSSID, do not trigger new attempt.
 844          */
 845         if (wpa_s->reassociate ||
 846             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 847              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
 848                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
 849               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 850               0))) {
 851                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 852                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 853                         return;
 854                 }
 855                 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
 856                         "reassociate: %d  selected: "MACSTR "  bssid: " MACSTR
 857                         "  pending: " MACSTR "  wpa_state: %s",
 858                         wpa_s->reassociate, MAC2STR(selected->bssid),
 859                         MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
 860                         wpa_supplicant_state_txt(wpa_s->wpa_state));
 861                 wpa_supplicant_associate(wpa_s, selected, ssid);
 862         } else {
 863                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
 864                         "selected AP");
 865         }
 866 }
 867
 868
 869 static struct wpa_ssid *
 870 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 871 {
 872         int prio;
 873         struct wpa_ssid *ssid;
 874
 875         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 876                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 877                 {
 878                         if (ssid->disabled)
 879                                 continue;
 880                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 881                             ssid->mode == IEEE80211_MODE_AP)
 882                                 return ssid;
 883                 }
 884         }
 885         return NULL;
 886 }
 887
 888
 889 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 890  * on BSS added and BSS changed events */
 891 static void wpa_supplicant_rsn_preauth_scan_results(
 892         struct wpa_supplicant *wpa_s)
 893 {
 894         struct wpa_bss *bss;
 895
 896         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 897                 return;
 898
 899         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 900                 const u8 *ssid, *rsn;
 901
 902                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
 903                 if (ssid == NULL)
 904                         continue;
 905
 906                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 907                 if (rsn == NULL)
 908                         continue;
 909
 910                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
 911         }
 912
 913 }
 914
 915
 916 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
 917                                        struct wpa_bss *selected,
 918                                        struct wpa_ssid *ssid,
 919                                        struct wpa_scan_results *scan_res)
 920 {
 921         size_t i;
 922         struct wpa_scan_res *current_bss = NULL;
 923         int min_diff;
 924
 925         if (wpa_s->reassociate)
 926                 return 1; /* explicit request to reassociate */
 927         if (wpa_s->wpa_state < WPA_ASSOCIATED)
 928                 return 1; /* we are not associated; continue */
 929         if (wpa_s->current_ssid == NULL)
 930                 return 1; /* unknown current SSID */
 931         if (wpa_s->current_ssid != ssid)
 932                 return 1; /* different network block */
 933
 934         if (wpas_driver_bss_selection(wpa_s))
 935                 return 0; /* Driver-based roaming */
 936
 937         for (i = 0; i < scan_res->num; i++) {
 938                 struct wpa_scan_res *res = scan_res->res[i];
 939                 const u8 *ie;
 940                 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
 941                         continue;
 942
 943                 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 944                 if (ie == NULL)
 945                         continue;
 946                 if (ie[1] != wpa_s->current_ssid->ssid_len ||
 947                     os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
 948                         continue;
 949                 current_bss = res;
 950                 break;
 951         }
 952
 953         if (!current_bss)
 954                 return 1; /* current BSS not seen in scan results */
 955
 956         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
 957         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
 958                 MAC2STR(current_bss->bssid), current_bss->level);
 959         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
 960                 MAC2STR(selected->bssid), selected->level);
 961
 962         if (wpa_s->current_ssid->bssid_set &&
 963             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
 964             0) {
 965                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
 966                         "has preferred BSSID");
 967                 return 1;
 968         }
 969
 970         min_diff = 2;
 971         if (current_bss->level < 0) {
 972                 if (current_bss->level < -85)
 973                         min_diff = 1;
 974                 else if (current_bss->level < -80)
 975                         min_diff = 2;
 976                 else if (current_bss->level < -75)
 977                         min_diff = 3;
 978                 else if (current_bss->level < -70)
 979                         min_diff = 4;
 980                 else
 981                         min_diff = 5;
 982         }
 983         if (abs(current_bss->level - selected->level) < min_diff) {
 984                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
 985                         "in signal level");
 986                 return 0;
 987         }
 988
 989         return 1;
 990 }
 991
 992 /* Return < 0 if no scan results could be fetched. */
 993 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 994                                               union wpa_event_data *data)
 995 {
 996         struct wpa_bss *selected;
 997         struct wpa_ssid *ssid = NULL;
 998         struct wpa_scan_results *scan_res;
 999         int ap = 0;
1000
1001 #ifdef CONFIG_AP
1002         if (wpa_s->ap_iface)
1003                 ap = 1;
1004 #endif /* CONFIG_AP */
1005
1006         wpa_supplicant_notify_scanning(wpa_s, 0);
1007
1008         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1009                                                    data ? &data->scan_info :
1010                                                    NULL, 1);
1011         if (scan_res == NULL) {
1012                 if (wpa_s->conf->ap_scan == 2 || ap)
1013                         return -1;
1014                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1015                         "scanning again");
1016                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1017                 return -1;
1018         }
1019
1020 #ifndef CONFIG_NO_RANDOM_POOL
1021         size_t i, num;
1022         num = scan_res->num;
1023         if (num > 10)
1024                 num = 10;
1025         for (i = 0; i < num; i++) {
1026                 u8 buf[5];
1027                 struct wpa_scan_res *res = scan_res->res[i];
1028                 buf[0] = res->bssid[5];
1029                 buf[1] = res->qual & 0xff;
1030                 buf[2] = res->noise & 0xff;
1031                 buf[3] = res->level & 0xff;
1032                 buf[4] = res->tsf & 0xff;
1033                 random_add_randomness(buf, sizeof(buf));
1034         }
1035 #endif /* CONFIG_NO_RANDOM_POOL */
1036
1037         if (wpa_s->scan_res_handler) {
1038                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1039                                          struct wpa_scan_results *scan_res);
1040
1041                 scan_res_handler = wpa_s->scan_res_handler;
1042                 wpa_s->scan_res_handler = NULL;
1043                 scan_res_handler(wpa_s, scan_res);
1044
1045                 wpa_scan_results_free(scan_res);
1046                 return 0;
1047         }
1048
1049         if (ap) {
1050                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1051 #ifdef CONFIG_AP
1052                 if (wpa_s->ap_iface->scan_cb)
1053                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1054 #endif /* CONFIG_AP */
1055                 wpa_scan_results_free(scan_res);
1056                 return 0;
1057         }
1058
1059         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
1060         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1061         wpas_notify_scan_results(wpa_s);
1062
1063         wpas_notify_scan_done(wpa_s, 1);
1064
1065         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
1066                 wpa_scan_results_free(scan_res);
1067                 return 0;
1068         }
1069
1070         if (wpa_s->disconnected) {
1071                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1072                 wpa_scan_results_free(scan_res);
1073                 return 0;
1074         }
1075
1076         if (!wpas_driver_bss_selection(wpa_s) &&
1077             bgscan_notify_scan(wpa_s, scan_res) == 1) {
1078                 wpa_scan_results_free(scan_res);
1079                 return 0;
1080         }
1081
1082         selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
1083
1084         if (selected) {
1085                 int skip;
1086                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
1087                                                     scan_res);
1088                 wpa_scan_results_free(scan_res);
1089                 if (skip)
1090                         return 0;
1091                 wpa_supplicant_connect(wpa_s, selected, ssid);
1092                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1093         } else {
1094                 wpa_scan_results_free(scan_res);
1095                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1096                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1097                 if (ssid) {
1098                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1099                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1100                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1101                 } else {
1102                         int timeout_sec = wpa_s->scan_interval;
1103                         int timeout_usec = 0;
1104 #ifdef CONFIG_P2P
1105                         if (wpa_s->p2p_in_provisioning) {
1106                                 /*
1107                                  * Use shorter wait during P2P Provisioning
1108                                  * state to speed up group formation.
1109                                  */
1110                                 timeout_sec = 0;
1111                                 timeout_usec = 250000;
1112                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1113                                                             timeout_usec);
1114                                 return 0;
1115                         }
1116 #endif /* CONFIG_P2P */
1117                         if (wpa_supplicant_req_sched_scan(wpa_s))
1118                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1119                                                             timeout_usec);
1120                 }
1121         }
1122         return 0;
1123 }
1124
1125
1126 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1127                                               union wpa_event_data *data)
1128 {
1129         const char *rn, *rn2;
1130         struct wpa_supplicant *ifs;
1131
1132         if (_wpa_supplicant_event_scan_results(wpa_s, data) < 0) {
1133                 /*
1134                  * If no scan results could be fetched, then no need to
1135                  * notify those interfaces that did not actually request
1136                  * this scan.
1137                  */
1138                 return;
1139         }
1140
1141         /*
1142          * Check other interfaces to see if they have the same radio-name. If
1143          * so, they get updated with this same scan info.
1144          */
1145         if (!wpa_s->driver->get_radio_name)
1146                 return;
1147
1148         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1149         if (rn == NULL || rn[0] == '\0')
1150                 return;
1151
1152         wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1153                 "sharing same radio (%s) in event_scan_results", rn);
1154
1155         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1156                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1157                         continue;
1158
1159                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1160                 if (rn2 && os_strcmp(rn, rn2) == 0) {
1161                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1162                                    "sibling", ifs->ifname);
1163                         _wpa_supplicant_event_scan_results(ifs, data);
1164                 }
1165         }
1166 }
1167
1168 #endif /* CONFIG_NO_SCAN_PROCESSING */
1169
1170
1171 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1172                                           union wpa_event_data *data)
1173 {
1174         int l, len, found = 0, wpa_found, rsn_found;
1175         const u8 *p;
1176
1177         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1178         if (data->assoc_info.req_ies)
1179                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1180                             data->assoc_info.req_ies_len);
1181         if (data->assoc_info.resp_ies) {
1182                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1183                             data->assoc_info.resp_ies_len);
1184 #ifdef CONFIG_TDLS
1185                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1186                                         data->assoc_info.resp_ies_len);
1187 #endif /* CONFIG_TDLS */
1188         }
1189         if (data->assoc_info.beacon_ies)
1190                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1191                             data->assoc_info.beacon_ies,
1192                             data->assoc_info.beacon_ies_len);
1193         if (data->assoc_info.freq)
1194                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1195                         data->assoc_info.freq);
1196
1197         p = data->assoc_info.req_ies;
1198         l = data->assoc_info.req_ies_len;
1199
1200         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1201         while (p && l >= 2) {
1202                 len = p[1] + 2;
1203                 if (len > l) {
1204                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1205                                     p, l);
1206                         break;
1207                 }
1208                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1209                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1210                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1211                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1212                                 break;
1213                         found = 1;
1214                         wpa_find_assoc_pmkid(wpa_s);
1215                         break;
1216                 }
1217                 l -= len;
1218                 p += len;
1219         }
1220         if (!found && data->assoc_info.req_ies)
1221                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1222
1223 #ifdef CONFIG_IEEE80211R
1224 #ifdef CONFIG_SME
1225         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1226                 u8 bssid[ETH_ALEN];
1227                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1228                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1229                                                  data->assoc_info.resp_ies,
1230                                                  data->assoc_info.resp_ies_len,
1231                                                  bssid) < 0) {
1232                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1233                                 "Reassociation Response failed");
1234                         wpa_supplicant_deauthenticate(
1235                                 wpa_s, WLAN_REASON_INVALID_IE);
1236                         return -1;
1237                 }
1238         }
1239
1240         p = data->assoc_info.resp_ies;
1241         l = data->assoc_info.resp_ies_len;
1242
1243 #ifdef CONFIG_WPS_STRICT
1244         if (p && wpa_s->current_ssid &&
1245             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1246                 struct wpabuf *wps;
1247                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1248                 if (wps == NULL) {
1249                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1250                                 "include WPS IE in (Re)Association Response");
1251                         return -1;
1252                 }
1253
1254                 if (wps_validate_assoc_resp(wps) < 0) {
1255                         wpabuf_free(wps);
1256                         wpa_supplicant_deauthenticate(
1257                                 wpa_s, WLAN_REASON_INVALID_IE);
1258                         return -1;
1259                 }
1260                 wpabuf_free(wps);
1261         }
1262 #endif /* CONFIG_WPS_STRICT */
1263
1264         /* Go through the IEs and make a copy of the MDIE, if present. */
1265         while (p && l >= 2) {
1266                 len = p[1] + 2;
1267                 if (len > l) {
1268                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1269                                     p, l);
1270                         break;
1271                 }
1272                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1273                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1274                         wpa_s->sme.ft_used = 1;
1275                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1276                                   MOBILITY_DOMAIN_ID_LEN);
1277                         break;
1278                 }
1279                 l -= len;
1280                 p += len;
1281         }
1282 #endif /* CONFIG_SME */
1283
1284         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1285                              data->assoc_info.resp_ies_len);
1286 #endif /* CONFIG_IEEE80211R */
1287
1288         /* WPA/RSN IE from Beacon/ProbeResp */
1289         p = data->assoc_info.beacon_ies;
1290         l = data->assoc_info.beacon_ies_len;
1291
1292         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1293          */
1294         wpa_found = rsn_found = 0;
1295         while (p && l >= 2) {
1296                 len = p[1] + 2;
1297                 if (len > l) {
1298                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1299                                     p, l);
1300                         break;
1301                 }
1302                 if (!wpa_found &&
1303                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1304                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1305                         wpa_found = 1;
1306                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1307                 }
1308
1309                 if (!rsn_found &&
1310                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1311                         rsn_found = 1;
1312                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1313                 }
1314
1315                 l -= len;
1316                 p += len;
1317         }
1318
1319         if (!wpa_found && data->assoc_info.beacon_ies)
1320                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1321         if (!rsn_found && data->assoc_info.beacon_ies)
1322                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1323         if (wpa_found || rsn_found)
1324                 wpa_s->ap_ies_from_associnfo = 1;
1325
1326         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1327             wpa_s->assoc_freq != data->assoc_info.freq) {
1328                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1329                            "%u to %u MHz",
1330                            wpa_s->assoc_freq, data->assoc_info.freq);
1331                 wpa_supplicant_update_scan_results(wpa_s);
1332         }
1333
1334         wpa_s->assoc_freq = data->assoc_info.freq;
1335
1336         return 0;
1337 }
1338
1339
1340 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1341                                        union wpa_event_data *data)
1342 {
1343         u8 bssid[ETH_ALEN];
1344         int ft_completed;
1345         int bssid_changed;
1346         struct wpa_driver_capa capa;
1347
1348 #ifdef CONFIG_AP
1349         if (wpa_s->ap_iface) {
1350                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1351                                     data->assoc_info.addr,
1352                                     data->assoc_info.req_ies,
1353                                     data->assoc_info.req_ies_len,
1354                                     data->assoc_info.reassoc);
1355                 return;
1356         }
1357 #endif /* CONFIG_AP */
1358
1359         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1360         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1361                 return;
1362
1363         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1364         if (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1365             os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1366                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1367                         MACSTR, MAC2STR(bssid));
1368                 random_add_randomness(bssid, ETH_ALEN);
1369                 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1370                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1371                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1372                 if (bssid_changed)
1373                         wpas_notify_bssid_changed(wpa_s);
1374
1375                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1376                         wpa_clear_keys(wpa_s, bssid);
1377                 }
1378                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1379                         wpa_supplicant_disassociate(
1380                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1381                         return;
1382                 }
1383                 if (wpa_s->current_ssid) {
1384                         struct wpa_bss *bss = NULL;
1385                         struct wpa_ssid *ssid = wpa_s->current_ssid;
1386                         if (ssid->ssid_len > 0)
1387                                 bss = wpa_bss_get(wpa_s, bssid,
1388                                                   ssid->ssid, ssid->ssid_len);
1389                         if (!bss)
1390                                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1391                         if (bss)
1392                                 wpa_s->current_bss = bss;
1393                 }
1394         }
1395
1396 #ifdef CONFIG_SME
1397         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1398         wpa_s->sme.prev_bssid_set = 1;
1399 #endif /* CONFIG_SME */
1400
1401         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1402         if (wpa_s->current_ssid) {
1403                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1404                  * initialized before association, but for other modes,
1405                  * initialize PC/SC here, if the current configuration needs
1406                  * smartcard or SIM/USIM. */
1407                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1408         }
1409         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1410         if (wpa_s->l2)
1411                 l2_packet_notify_auth_start(wpa_s->l2);
1412
1413         /*
1414          * Set portEnabled first to FALSE in order to get EAP state machine out
1415          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1416          * state machine may transit to AUTHENTICATING state based on obsolete
1417          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1418          * AUTHENTICATED without ever giving chance to EAP state machine to
1419          * reset the state.
1420          */
1421         if (!ft_completed) {
1422                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1423                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1424         }
1425         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1426                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1427         /* 802.1X::portControl = Auto */
1428         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1429         wpa_s->eapol_received = 0;
1430         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1431             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1432             (wpa_s->current_ssid &&
1433              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1434                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1435                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1436         } else if (!ft_completed) {
1437                 /* Timeout for receiving the first EAPOL packet */
1438                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1439         }
1440         wpa_supplicant_cancel_scan(wpa_s);
1441
1442         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1443             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1444                 /*
1445                  * We are done; the driver will take care of RSN 4-way
1446                  * handshake.
1447                  */
1448                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1449                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1450                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1451                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1452         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1453                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1454                 /*
1455                  * The driver will take care of RSN 4-way handshake, so we need
1456                  * to allow EAPOL supplicant to complete its work without
1457                  * waiting for WPA supplicant.
1458                  */
1459                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1460         } else if (ft_completed) {
1461                 /*
1462                  * FT protocol completed - make sure EAPOL state machine ends
1463                  * up in authenticated.
1464                  */
1465                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1466                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1467                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1468                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1469         }
1470
1471         if (wpa_s->pending_eapol_rx) {
1472                 struct os_time now, age;
1473                 os_get_time(&now);
1474                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1475                 if (age.sec == 0 && age.usec < 100000 &&
1476                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1477                     0) {
1478                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1479                                 "frame that was received just before "
1480                                 "association notification");
1481                         wpa_supplicant_rx_eapol(
1482                                 wpa_s, wpa_s->pending_eapol_rx_src,
1483                                 wpabuf_head(wpa_s->pending_eapol_rx),
1484                                 wpabuf_len(wpa_s->pending_eapol_rx));
1485                 }
1486                 wpabuf_free(wpa_s->pending_eapol_rx);
1487                 wpa_s->pending_eapol_rx = NULL;
1488         }
1489
1490         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1491              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1492             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1493             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1494                 /* Set static WEP keys again */
1495                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1496         }
1497
1498 #ifdef CONFIG_IBSS_RSN
1499         if (wpa_s->current_ssid &&
1500             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1501             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1502             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1503             wpa_s->ibss_rsn == NULL) {
1504                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1505                 if (!wpa_s->ibss_rsn) {
1506                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1507                         wpa_supplicant_deauthenticate(
1508                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1509                         return;
1510                 }
1511
1512                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1513         }
1514 #endif /* CONFIG_IBSS_RSN */
1515 }
1516
1517
1518 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1519                                           u16 reason_code)
1520 {
1521         const u8 *bssid;
1522         int authenticating;
1523         u8 prev_pending_bssid[ETH_ALEN];
1524
1525         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1526         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1527
1528         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1529                 /*
1530                  * At least Host AP driver and a Prism3 card seemed to be
1531                  * generating streams of disconnected events when configuring
1532                  * IBSS for WPA-None. Ignore them for now.
1533                  */
1534                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1535                         "IBSS/WPA-None mode");
1536                 return;
1537         }
1538
1539         if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1540             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1541                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1542                         "pre-shared key may be incorrect");
1543         }
1544         if (!wpa_s->auto_reconnect_disabled ||
1545             wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1546                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect enabled: try to "
1547                         "reconnect (wps=%d)",
1548                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS);
1549                 if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1550                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1551         } else {
1552                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect disabled: do not "
1553                         "try to re-connect");
1554                 wpa_s->reassociate = 0;
1555                 wpa_s->disconnected = 1;
1556         }
1557         bssid = wpa_s->bssid;
1558         if (is_zero_ether_addr(bssid))
1559                 bssid = wpa_s->pending_bssid;
1560         wpas_connection_failed(wpa_s, bssid);
1561         wpa_sm_notify_disassoc(wpa_s->wpa);
1562         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1563                 " reason=%d",
1564                 MAC2STR(bssid), reason_code);
1565         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1566                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1567                 wpa_s->keys_cleared = 0;
1568                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1569         }
1570         wpa_supplicant_mark_disassoc(wpa_s);
1571
1572         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1573                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
1574 }
1575
1576
1577 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1578 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
1579                                                     void *sock_ctx)
1580 {
1581         struct wpa_supplicant *wpa_s = eloop_ctx;
1582
1583         if (!wpa_s->pending_mic_error_report)
1584                 return;
1585
1586         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
1587         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1588         wpa_s->pending_mic_error_report = 0;
1589 }
1590 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1591
1592
1593 static void
1594 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1595                                          union wpa_event_data *data)
1596 {
1597         int pairwise;
1598         struct os_time t;
1599
1600         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1601         pairwise = (data && data->michael_mic_failure.unicast);
1602         os_get_time(&t);
1603         if ((wpa_s->last_michael_mic_error &&
1604              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1605             wpa_s->pending_mic_error_report) {
1606                 if (wpa_s->pending_mic_error_report) {
1607                         /*
1608                          * Send the pending MIC error report immediately since
1609                          * we are going to start countermeasures and AP better
1610                          * do the same.
1611                          */
1612                         wpa_sm_key_request(wpa_s->wpa, 1,
1613                                            wpa_s->pending_mic_error_pairwise);
1614                 }
1615
1616                 /* Send the new MIC error report immediately since we are going
1617                  * to start countermeasures and AP better do the same.
1618                  */
1619                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1620
1621                 /* initialize countermeasures */
1622                 wpa_s->countermeasures = 1;
1623                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1624
1625                 /*
1626                  * Need to wait for completion of request frame. We do not get
1627                  * any callback for the message completion, so just wait a
1628                  * short while and hope for the best. */
1629                 os_sleep(0, 10000);
1630
1631                 wpa_drv_set_countermeasures(wpa_s, 1);
1632                 wpa_supplicant_deauthenticate(wpa_s,
1633                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
1634                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1635                                      wpa_s, NULL);
1636                 eloop_register_timeout(60, 0,
1637                                        wpa_supplicant_stop_countermeasures,
1638                                        wpa_s, NULL);
1639                 /* TODO: mark the AP rejected for 60 second. STA is
1640                  * allowed to associate with another AP.. */
1641         } else {
1642 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1643                 if (wpa_s->mic_errors_seen) {
1644                         /*
1645                          * Reduce the effectiveness of Michael MIC error
1646                          * reports as a means for attacking against TKIP if
1647                          * more than one MIC failure is noticed with the same
1648                          * PTK. We delay the transmission of the reports by a
1649                          * random time between 0 and 60 seconds in order to
1650                          * force the attacker wait 60 seconds before getting
1651                          * the information on whether a frame resulted in a MIC
1652                          * failure.
1653                          */
1654                         u8 rval[4];
1655                         int sec;
1656
1657                         if (os_get_random(rval, sizeof(rval)) < 0)
1658                                 sec = os_random() % 60;
1659                         else
1660                                 sec = WPA_GET_BE32(rval) % 60;
1661                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
1662                                 "report %d seconds", sec);
1663                         wpa_s->pending_mic_error_report = 1;
1664                         wpa_s->pending_mic_error_pairwise = pairwise;
1665                         eloop_cancel_timeout(
1666                                 wpa_supplicant_delayed_mic_error_report,
1667                                 wpa_s, NULL);
1668                         eloop_register_timeout(
1669                                 sec, os_random() % 1000000,
1670                                 wpa_supplicant_delayed_mic_error_report,
1671                                 wpa_s, NULL);
1672                 } else {
1673                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1674                 }
1675 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1676                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1677 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1678         }
1679         wpa_s->last_michael_mic_error = t.sec;
1680         wpa_s->mic_errors_seen++;
1681 }
1682
1683
1684 #ifdef CONFIG_TERMINATE_ONLASTIF
1685 static int any_interfaces(struct wpa_supplicant *head)
1686 {
1687         struct wpa_supplicant *wpa_s;
1688
1689         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1690                 if (!wpa_s->interface_removed)
1691                         return 1;
1692         return 0;
1693 }
1694 #endif /* CONFIG_TERMINATE_ONLASTIF */
1695
1696
1697 static void
1698 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1699                                       union wpa_event_data *data)
1700 {
1701         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1702                 return;
1703
1704         switch (data->interface_status.ievent) {
1705         case EVENT_INTERFACE_ADDED:
1706                 if (!wpa_s->interface_removed)
1707                         break;
1708                 wpa_s->interface_removed = 0;
1709                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
1710                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1711                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
1712                                 "driver after interface was added");
1713                 }
1714                 break;
1715         case EVENT_INTERFACE_REMOVED:
1716                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
1717                 wpa_s->interface_removed = 1;
1718                 wpa_supplicant_mark_disassoc(wpa_s);
1719                 l2_packet_deinit(wpa_s->l2);
1720                 wpa_s->l2 = NULL;
1721 #ifdef CONFIG_IBSS_RSN
1722                 ibss_rsn_deinit(wpa_s->ibss_rsn);
1723                 wpa_s->ibss_rsn = NULL;
1724 #endif /* CONFIG_IBSS_RSN */
1725 #ifdef CONFIG_TERMINATE_ONLASTIF
1726                 /* check if last interface */
1727                 if (!any_interfaces(wpa_s->global->ifaces))
1728                         eloop_terminate();
1729 #endif /* CONFIG_TERMINATE_ONLASTIF */
1730                 break;
1731         }
1732 }
1733
1734
1735 #ifdef CONFIG_PEERKEY
1736 static void
1737 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1738                               union wpa_event_data *data)
1739 {
1740         if (data == NULL)
1741                 return;
1742         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1743 }
1744 #endif /* CONFIG_PEERKEY */
1745
1746
1747 #ifdef CONFIG_TDLS
1748 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
1749                                       union wpa_event_data *data)
1750 {
1751         if (data == NULL)
1752                 return;
1753         switch (data->tdls.oper) {
1754         case TDLS_REQUEST_SETUP:
1755                 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
1756                 break;
1757         case TDLS_REQUEST_TEARDOWN:
1758                 /* request from driver to add FTIE */
1759                 wpa_tdls_recv_teardown_notify(wpa_s->wpa, data->tdls.peer,
1760                                               data->tdls.reason_code);
1761                 break;
1762         }
1763 }
1764 #endif /* CONFIG_TDLS */
1765
1766
1767 #ifdef CONFIG_IEEE80211R
1768 static void
1769 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1770                                  union wpa_event_data *data)
1771 {
1772         if (data == NULL)
1773                 return;
1774
1775         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1776                                     data->ft_ies.ies_len,
1777                                     data->ft_ies.ft_action,
1778                                     data->ft_ies.target_ap,
1779                                     data->ft_ies.ric_ies,
1780                                     data->ft_ies.ric_ies_len) < 0) {
1781                 /* TODO: prevent MLME/driver from trying to associate? */
1782         }
1783 }
1784 #endif /* CONFIG_IEEE80211R */
1785
1786
1787 #ifdef CONFIG_IBSS_RSN
1788 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1789                                                 union wpa_event_data *data)
1790 {
1791         struct wpa_ssid *ssid;
1792         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1793                 return;
1794         if (data == NULL)
1795                 return;
1796         ssid = wpa_s->current_ssid;
1797         if (ssid == NULL)
1798                 return;
1799         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
1800                 return;
1801
1802         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1803 }
1804 #endif /* CONFIG_IBSS_RSN */
1805
1806
1807 #ifdef CONFIG_IEEE80211R
1808 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1809                          size_t len)
1810 {
1811         const u8 *sta_addr, *target_ap_addr;
1812         u16 status;
1813
1814         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1815         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1816                 return; /* only SME case supported for now */
1817         if (len < 1 + 2 * ETH_ALEN + 2)
1818                 return;
1819         if (data[0] != 2)
1820                 return; /* Only FT Action Response is supported for now */
1821         sta_addr = data + 1;
1822         target_ap_addr = data + 1 + ETH_ALEN;
1823         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1824         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
1825                 MACSTR " TargetAP " MACSTR " status %u",
1826                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1827
1828         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1829                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1830                         " in FT Action Response", MAC2STR(sta_addr));
1831                 return;
1832         }
1833
1834         if (status) {
1835                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
1836                         "failure (status code %d)", status);
1837                 /* TODO: report error to FT code(?) */
1838                 return;
1839         }
1840
1841         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1842                                     len - (1 + 2 * ETH_ALEN + 2), 1,
1843                                     target_ap_addr, NULL, 0) < 0)
1844                 return;
1845
1846 #ifdef CONFIG_SME
1847         {
1848                 struct wpa_bss *bss;
1849                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1850                 if (bss)
1851                         wpa_s->sme.freq = bss->freq;
1852                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1853                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1854                               WLAN_AUTH_FT);
1855         }
1856 #endif /* CONFIG_SME */
1857 }
1858 #endif /* CONFIG_IEEE80211R */
1859
1860
1861 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
1862                                                struct unprot_deauth *e)
1863 {
1864 #ifdef CONFIG_IEEE80211W
1865         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
1866                    "dropped: " MACSTR " -> " MACSTR
1867                    " (reason code %u)",
1868                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1869         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1870 #endif /* CONFIG_IEEE80211W */
1871 }
1872
1873
1874 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
1875                                                  struct unprot_disassoc *e)
1876 {
1877 #ifdef CONFIG_IEEE80211W
1878         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
1879                    "dropped: " MACSTR " -> " MACSTR
1880                    " (reason code %u)",
1881                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1882         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1883 #endif /* CONFIG_IEEE80211W */
1884 }
1885
1886
1887 static void wnm_action_rx(struct wpa_supplicant *wpa_s, struct rx_action *rx)
1888 {
1889         u8 action, mode;
1890         const u8 *pos, *end;
1891
1892         if (rx->data == NULL || rx->len == 0)
1893                 return;
1894
1895         pos = rx->data;
1896         end = pos + rx->len;
1897         action = *pos++;
1898
1899         wpa_printf(MSG_DEBUG, "WNM: RX action %u from " MACSTR,
1900                    action, MAC2STR(rx->sa));
1901         switch (action) {
1902         case WNM_BSS_TRANS_MGMT_REQ:
1903                 if (pos + 5 > end)
1904                         break;
1905                 wpa_printf(MSG_DEBUG, "WNM: BSS Transition Management "
1906                            "Request: dialog_token=%u request_mode=0x%x "
1907                            "disassoc_timer=%u validity_interval=%u",
1908                            pos[0], pos[1], WPA_GET_LE16(pos + 2), pos[4]);
1909                 mode = pos[1];
1910                 pos += 5;
1911                 if (mode & 0x08)
1912                         pos += 12; /* BSS Termination Duration */
1913                 if (mode & 0x10) {
1914                         char url[256];
1915                         if (pos + 1 > end || pos + 1 + pos[0] > end) {
1916                                 wpa_printf(MSG_DEBUG, "WNM: Invalid BSS "
1917                                            "Transition Management Request "
1918                                            "(URL)");
1919                                 break;
1920                         }
1921                         os_memcpy(url, pos + 1, pos[0]);
1922                         url[pos[0]] = '\0';
1923                         wpa_msg(wpa_s, MSG_INFO, "WNM: ESS Disassociation "
1924                                 "Imminent - session_info_url=%s", url);
1925                 }
1926                 break;
1927         }
1928 }
1929
1930
1931 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1932                           union wpa_event_data *data)
1933 {
1934         struct wpa_supplicant *wpa_s = ctx;
1935         u16 reason_code = 0;
1936
1937         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
1938             event != EVENT_INTERFACE_ENABLED &&
1939             event != EVENT_INTERFACE_STATUS) {
1940                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore event %d while interface is "
1941                         "disabled", event);
1942                 return;
1943         }
1944
1945         wpa_dbg(wpa_s, MSG_DEBUG, "Event %d received on interface %s",
1946                 event, wpa_s->ifname);
1947
1948         switch (event) {
1949         case EVENT_AUTH:
1950                 sme_event_auth(wpa_s, data);
1951                 break;
1952         case EVENT_ASSOC:
1953                 wpa_supplicant_event_assoc(wpa_s, data);
1954                 break;
1955         case EVENT_DISASSOC:
1956                 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
1957                 if (data) {
1958                         wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1959                                 data->disassoc_info.reason_code);
1960                         if (data->disassoc_info.addr)
1961                                 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
1962                                         MAC2STR(data->disassoc_info.addr));
1963                 }
1964 #ifdef CONFIG_AP
1965                 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
1966                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1967                                                data->disassoc_info.addr);
1968                         break;
1969                 }
1970 #endif /* CONFIG_AP */
1971                 if (data) {
1972                         reason_code = data->disassoc_info.reason_code;
1973                         wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
1974                                     data->disassoc_info.ie,
1975                                     data->disassoc_info.ie_len);
1976 #ifdef CONFIG_P2P
1977                         wpas_p2p_disassoc_notif(
1978                                 wpa_s, data->disassoc_info.addr, reason_code,
1979                                 data->disassoc_info.ie,
1980                                 data->disassoc_info.ie_len);
1981 #endif /* CONFIG_P2P */
1982                 }
1983                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1984                         sme_event_disassoc(wpa_s, data);
1985                 /* fall through */
1986         case EVENT_DEAUTH:
1987                 if (event == EVENT_DEAUTH) {
1988                         wpa_dbg(wpa_s, MSG_DEBUG,
1989                                 "Deauthentication notification");
1990                         if (data) {
1991                                 reason_code = data->deauth_info.reason_code;
1992                                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1993                                         data->deauth_info.reason_code);
1994                                 if (data->deauth_info.addr) {
1995                                         wpa_dbg(wpa_s, MSG_DEBUG, " * address "
1996                                                 MACSTR,
1997                                                 MAC2STR(data->deauth_info.
1998                                                         addr));
1999                                 }
2000                                 wpa_hexdump(MSG_DEBUG,
2001                                             "Deauthentication frame IE(s)",
2002                                             data->deauth_info.ie,
2003                                             data->deauth_info.ie_len);
2004 #ifdef CONFIG_P2P
2005                                 wpas_p2p_deauth_notif(
2006                                         wpa_s, data->deauth_info.addr,
2007                                         reason_code,
2008                                         data->deauth_info.ie,
2009                                         data->deauth_info.ie_len);
2010 #endif /* CONFIG_P2P */
2011                         }
2012                 }
2013 #ifdef CONFIG_AP
2014                 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
2015                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2016                                                data->deauth_info.addr);
2017                         break;
2018                 }
2019 #endif /* CONFIG_AP */
2020                 wpa_supplicant_event_disassoc(wpa_s, reason_code);
2021                 break;
2022         case EVENT_MICHAEL_MIC_FAILURE:
2023                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2024                 break;
2025 #ifndef CONFIG_NO_SCAN_PROCESSING
2026         case EVENT_SCAN_RESULTS:
2027                 wpa_supplicant_event_scan_results(wpa_s, data);
2028                 break;
2029 #endif /* CONFIG_NO_SCAN_PROCESSING */
2030         case EVENT_ASSOCINFO:
2031                 wpa_supplicant_event_associnfo(wpa_s, data);
2032                 break;
2033         case EVENT_INTERFACE_STATUS:
2034                 wpa_supplicant_event_interface_status(wpa_s, data);
2035                 break;
2036         case EVENT_PMKID_CANDIDATE:
2037                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2038                 break;
2039 #ifdef CONFIG_PEERKEY
2040         case EVENT_STKSTART:
2041                 wpa_supplicant_event_stkstart(wpa_s, data);
2042                 break;
2043 #endif /* CONFIG_PEERKEY */
2044 #ifdef CONFIG_TDLS
2045         case EVENT_TDLS:
2046                 wpa_supplicant_event_tdls(wpa_s, data);
2047                 break;
2048 #endif /* CONFIG_TDLS */
2049 #ifdef CONFIG_IEEE80211R
2050         case EVENT_FT_RESPONSE:
2051                 wpa_supplicant_event_ft_response(wpa_s, data);
2052                 break;
2053 #endif /* CONFIG_IEEE80211R */
2054 #ifdef CONFIG_IBSS_RSN
2055         case EVENT_IBSS_RSN_START:
2056                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2057                 break;
2058 #endif /* CONFIG_IBSS_RSN */
2059         case EVENT_ASSOC_REJECT:
2060                 if (data->assoc_reject.bssid)
2061                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2062                                 "bssid=" MACSTR " status_code=%u",
2063                                 MAC2STR(data->assoc_reject.bssid),
2064                                 data->assoc_reject.status_code);
2065                 else
2066                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2067                                 "status_code=%u",
2068                                 data->assoc_reject.status_code);
2069                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2070                         sme_event_assoc_reject(wpa_s, data);
2071                 break;
2072         case EVENT_AUTH_TIMED_OUT:
2073                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2074                         sme_event_auth_timed_out(wpa_s, data);
2075                 break;
2076         case EVENT_ASSOC_TIMED_OUT:
2077                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2078                         sme_event_assoc_timed_out(wpa_s, data);
2079                 break;
2080         case EVENT_TX_STATUS:
2081                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2082                         " type=%d stype=%d",
2083                         MAC2STR(data->tx_status.dst),
2084                         data->tx_status.type, data->tx_status.stype);
2085 #ifdef CONFIG_AP
2086                 if (wpa_s->ap_iface == NULL) {
2087 #ifdef CONFIG_OFFCHANNEL
2088                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2089                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2090                                 offchannel_send_action_tx_status(
2091                                         wpa_s, data->tx_status.dst,
2092                                         data->tx_status.data,
2093                                         data->tx_status.data_len,
2094                                         data->tx_status.ack ?
2095                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
2096                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
2097 #endif /* CONFIG_OFFCHANNEL */
2098                         break;
2099                 }
2100 #endif /* CONFIG_AP */
2101 #ifdef CONFIG_OFFCHANNEL
2102                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2103                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2104                 /*
2105                  * Catch TX status events for Action frames we sent via group
2106                  * interface in GO mode.
2107                  */
2108                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2109                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2110                     os_memcmp(wpa_s->parent->pending_action_dst,
2111                               data->tx_status.dst, ETH_ALEN) == 0) {
2112                         offchannel_send_action_tx_status(
2113                                 wpa_s->parent, data->tx_status.dst,
2114                                 data->tx_status.data,
2115                                 data->tx_status.data_len,
2116                                 data->tx_status.ack ?
2117                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
2118                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
2119                         break;
2120                 }
2121 #endif /* CONFIG_OFFCHANNEL */
2122 #ifdef CONFIG_AP
2123                 switch (data->tx_status.type) {
2124                 case WLAN_FC_TYPE_MGMT:
2125                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2126                                       data->tx_status.data_len,
2127                                       data->tx_status.stype,
2128                                       data->tx_status.ack);
2129                         break;
2130                 case WLAN_FC_TYPE_DATA:
2131                         ap_tx_status(wpa_s, data->tx_status.dst,
2132                                      data->tx_status.data,
2133                                      data->tx_status.data_len,
2134                                      data->tx_status.ack);
2135                         break;
2136                 }
2137 #endif /* CONFIG_AP */
2138                 break;
2139 #ifdef CONFIG_AP
2140         case EVENT_DRIVER_CLIENT_POLL_OK:
2141                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
2142                 break;
2143         case EVENT_RX_FROM_UNKNOWN:
2144                 if (wpa_s->ap_iface == NULL)
2145                         break;
2146                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
2147                                        data->rx_from_unknown.wds);
2148                 break;
2149         case EVENT_RX_MGMT:
2150                 if (wpa_s->ap_iface == NULL) {
2151 #ifdef CONFIG_P2P
2152                         u16 fc, stype;
2153                         const struct ieee80211_mgmt *mgmt;
2154                         mgmt = (const struct ieee80211_mgmt *)
2155                                 data->rx_mgmt.frame;
2156                         fc = le_to_host16(mgmt->frame_control);
2157                         stype = WLAN_FC_GET_STYPE(fc);
2158                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2159                             data->rx_mgmt.frame_len > 24) {
2160                                 const u8 *src = mgmt->sa;
2161                                 const u8 *ie = mgmt->u.probe_req.variable;
2162                                 size_t ie_len = data->rx_mgmt.frame_len -
2163                                         (mgmt->u.probe_req.variable -
2164                                          data->rx_mgmt.frame);
2165                                 wpas_p2p_probe_req_rx(wpa_s, src, mgmt->da,
2166                                                       mgmt->bssid, ie, ie_len);
2167                                 break;
2168                         }
2169 #endif /* CONFIG_P2P */
2170                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2171                                 "management frame in non-AP mode");
2172                         break;
2173                 }
2174                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2175                 break;
2176 #endif /* CONFIG_AP */
2177         case EVENT_RX_ACTION:
2178                 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2179                         " Category=%u DataLen=%d freq=%d MHz",
2180                         MAC2STR(data->rx_action.sa),
2181                         data->rx_action.category, (int) data->rx_action.len,
2182                         data->rx_action.freq);
2183 #ifdef CONFIG_IEEE80211R
2184                 if (data->rx_action.category == WLAN_ACTION_FT) {
2185                         ft_rx_action(wpa_s, data->rx_action.data,
2186                                      data->rx_action.len);
2187                         break;
2188                 }
2189 #endif /* CONFIG_IEEE80211R */
2190 #ifdef CONFIG_IEEE80211W
2191 #ifdef CONFIG_SME
2192                 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2193                         sme_sa_query_rx(wpa_s, data->rx_action.sa,
2194                                         data->rx_action.data,
2195                                         data->rx_action.len);
2196                         break;
2197                 }
2198 #endif /* CONFIG_SME */
2199 #endif /* CONFIG_IEEE80211W */
2200 #ifdef CONFIG_GAS
2201                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2202                     gas_query_rx(wpa_s->gas, data->rx_action.da,
2203                                  data->rx_action.sa, data->rx_action.bssid,
2204                                  data->rx_action.data, data->rx_action.len,
2205                                  data->rx_action.freq) == 0)
2206                         break;
2207 #endif /* CONFIG_GAS */
2208                 if (data->rx_action.category == WLAN_ACTION_WNM) {
2209                         wnm_action_rx(wpa_s, &data->rx_action);
2210                         break;
2211                 }
2212 #ifdef CONFIG_P2P
2213                 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2214                                    data->rx_action.sa,
2215                                    data->rx_action.bssid,
2216                                    data->rx_action.category,
2217                                    data->rx_action.data,
2218                                    data->rx_action.len, data->rx_action.freq);
2219 #endif /* CONFIG_P2P */
2220                 break;
2221         case EVENT_RX_PROBE_REQ:
2222                 if (data->rx_probe_req.sa == NULL ||
2223                     data->rx_probe_req.ie == NULL)
2224                         break;
2225 #ifdef CONFIG_AP
2226                 if (wpa_s->ap_iface) {
2227                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2228                                              data->rx_probe_req.sa,
2229                                              data->rx_probe_req.da,
2230                                              data->rx_probe_req.bssid,
2231                                              data->rx_probe_req.ie,
2232                                              data->rx_probe_req.ie_len);
2233                         break;
2234                 }
2235 #endif /* CONFIG_AP */
2236 #ifdef CONFIG_P2P
2237                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2238                                       data->rx_probe_req.da,
2239                                       data->rx_probe_req.bssid,
2240                                       data->rx_probe_req.ie,
2241                                       data->rx_probe_req.ie_len);
2242 #endif /* CONFIG_P2P */
2243                 break;
2244         case EVENT_REMAIN_ON_CHANNEL:
2245 #ifdef CONFIG_OFFCHANNEL
2246                 offchannel_remain_on_channel_cb(
2247                         wpa_s, data->remain_on_channel.freq,
2248                         data->remain_on_channel.duration);
2249 #endif /* CONFIG_OFFCHANNEL */
2250 #ifdef CONFIG_P2P
2251                 wpas_p2p_remain_on_channel_cb(
2252                         wpa_s, data->remain_on_channel.freq,
2253                         data->remain_on_channel.duration);
2254 #endif /* CONFIG_P2P */
2255                 break;
2256         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2257 #ifdef CONFIG_OFFCHANNEL
2258                 offchannel_cancel_remain_on_channel_cb(
2259                         wpa_s, data->remain_on_channel.freq);
2260 #endif /* CONFIG_OFFCHANNEL */
2261 #ifdef CONFIG_P2P
2262                 wpas_p2p_cancel_remain_on_channel_cb(
2263                         wpa_s, data->remain_on_channel.freq);
2264 #endif /* CONFIG_P2P */
2265                 break;
2266 #ifdef CONFIG_P2P
2267         case EVENT_P2P_DEV_FOUND: {
2268                 struct p2p_peer_info peer_info;
2269
2270                 os_memset(&peer_info, 0, sizeof(peer_info));
2271                 if (data->p2p_dev_found.dev_addr)
2272                         os_memcpy(peer_info.p2p_device_addr,
2273                                   data->p2p_dev_found.dev_addr, ETH_ALEN);
2274                 if (data->p2p_dev_found.pri_dev_type)
2275                         os_memcpy(peer_info.pri_dev_type,
2276                                   data->p2p_dev_found.pri_dev_type,
2277                                   sizeof(peer_info.pri_dev_type));
2278                 if (data->p2p_dev_found.dev_name)
2279                         os_strlcpy(peer_info.device_name,
2280                                    data->p2p_dev_found.dev_name,
2281                                    sizeof(peer_info.device_name));
2282                 peer_info.config_methods = data->p2p_dev_found.config_methods;
2283                 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2284                 peer_info.group_capab = data->p2p_dev_found.group_capab;
2285
2286                 /*
2287                  * FIX: new_device=1 is not necessarily correct. We should
2288                  * maintain a P2P peer database in wpa_supplicant and update
2289                  * this information based on whether the peer is truly new.
2290                  */
2291                 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2292                 break;
2293                 }
2294         case EVENT_P2P_GO_NEG_REQ_RX:
2295                 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2296                                    data->p2p_go_neg_req_rx.dev_passwd_id);
2297                 break;
2298         case EVENT_P2P_GO_NEG_COMPLETED:
2299                 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2300                 break;
2301         case EVENT_P2P_PROV_DISC_REQUEST:
2302                 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2303                                    data->p2p_prov_disc_req.config_methods,
2304                                    data->p2p_prov_disc_req.dev_addr,
2305                                    data->p2p_prov_disc_req.pri_dev_type,
2306                                    data->p2p_prov_disc_req.dev_name,
2307                                    data->p2p_prov_disc_req.supp_config_methods,
2308                                    data->p2p_prov_disc_req.dev_capab,
2309                                    data->p2p_prov_disc_req.group_capab);
2310                 break;
2311         case EVENT_P2P_PROV_DISC_RESPONSE:
2312                 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2313                                     data->p2p_prov_disc_resp.config_methods);
2314                 break;
2315         case EVENT_P2P_SD_REQUEST:
2316                 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2317                                 data->p2p_sd_req.sa,
2318                                 data->p2p_sd_req.dialog_token,
2319                                 data->p2p_sd_req.update_indic,
2320                                 data->p2p_sd_req.tlvs,
2321                                 data->p2p_sd_req.tlvs_len);
2322                 break;
2323         case EVENT_P2P_SD_RESPONSE:
2324                 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2325                                  data->p2p_sd_resp.update_indic,
2326                                  data->p2p_sd_resp.tlvs,
2327                                  data->p2p_sd_resp.tlvs_len);
2328                 break;
2329 #endif /* CONFIG_P2P */
2330         case EVENT_EAPOL_RX:
2331                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2332                                         data->eapol_rx.data,
2333                                         data->eapol_rx.data_len);
2334                 break;
2335         case EVENT_SIGNAL_CHANGE:
2336                 bgscan_notify_signal_change(
2337                         wpa_s, data->signal_change.above_threshold,
2338                         data->signal_change.current_signal,
2339                         data->signal_change.current_noise,
2340                         data->signal_change.current_txrate);
2341                 break;
2342         case EVENT_INTERFACE_ENABLED:
2343                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2344                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2345 #ifdef CONFIG_AP
2346                         if (!wpa_s->ap_iface) {
2347                                 wpa_supplicant_set_state(wpa_s,
2348                                                          WPA_DISCONNECTED);
2349                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2350                         } else
2351                                 wpa_supplicant_set_state(wpa_s,
2352                                                          WPA_COMPLETED);
2353 #else /* CONFIG_AP */
2354                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2355                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2356 #endif /* CONFIG_AP */
2357                 }
2358                 break;
2359         case EVENT_INTERFACE_DISABLED:
2360                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2361                 wpa_supplicant_mark_disassoc(wpa_s);
2362                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2363                 break;
2364         case EVENT_CHANNEL_LIST_CHANGED:
2365                 if (wpa_s->drv_priv == NULL)
2366                         break; /* Ignore event during drv initialization */
2367 #ifdef CONFIG_P2P
2368                 wpas_p2p_update_channel_list(wpa_s);
2369 #endif /* CONFIG_P2P */
2370                 break;
2371         case EVENT_INTERFACE_UNAVAILABLE:
2372 #ifdef CONFIG_P2P
2373                 wpas_p2p_interface_unavailable(wpa_s);
2374 #endif /* CONFIG_P2P */
2375                 break;
2376         case EVENT_BEST_CHANNEL:
2377                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2378                         "(%d %d %d)",
2379                         data->best_chan.freq_24, data->best_chan.freq_5,
2380                         data->best_chan.freq_overall);
2381                 wpa_s->best_24_freq = data->best_chan.freq_24;
2382                 wpa_s->best_5_freq = data->best_chan.freq_5;
2383                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2384 #ifdef CONFIG_P2P
2385                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2386                                               data->best_chan.freq_5,
2387                                               data->best_chan.freq_overall);
2388 #endif /* CONFIG_P2P */
2389                 break;
2390         case EVENT_UNPROT_DEAUTH:
2391                 wpa_supplicant_event_unprot_deauth(wpa_s,
2392                                                    &data->unprot_deauth);
2393                 break;
2394         case EVENT_UNPROT_DISASSOC:
2395                 wpa_supplicant_event_unprot_disassoc(wpa_s,
2396                                                      &data->unprot_disassoc);
2397                 break;
2398         case EVENT_STATION_LOW_ACK:
2399 #ifdef CONFIG_AP
2400                 if (wpa_s->ap_iface && data)
2401                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2402                                                   data->low_ack.addr);
2403 #endif /* CONFIG_AP */
2404                 break;
2405         case EVENT_IBSS_PEER_LOST:
2406 #ifdef CONFIG_IBSS_RSN
2407                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
2408 #endif /* CONFIG_IBSS_RSN */
2409                 break;
2410         case EVENT_DRIVER_GTK_REKEY:
2411                 if (os_memcmp(data->driver_gtk_rekey.bssid,
2412                               wpa_s->bssid, ETH_ALEN))
2413                         break;
2414                 if (!wpa_s->wpa)
2415                         break;
2416                 wpa_sm_update_replay_ctr(wpa_s->wpa,
2417                                          data->driver_gtk_rekey.replay_ctr);
2418                 break;
2419         case EVENT_SCHED_SCAN_STOPPED:
2420                 wpa_s->sched_scanning = 0;
2421                 wpa_supplicant_notify_scanning(wpa_s, 0);
2422
2423                 /*
2424                  * If we timed out, start a new sched scan to continue
2425                  * searching for more SSIDs.
2426                  */
2427                 if (wpa_s->sched_scan_timed_out)
2428                         wpa_supplicant_req_sched_scan(wpa_s);
2429                 break;
2430         case EVENT_WPS_BUTTON_PUSHED:
2431 #ifdef CONFIG_WPS
2432                 wpas_wps_start_pbc(wpa_s, NULL, 0);
2433 #endif /* CONFIG_WPS */
2434                 break;
2435         default:
2436                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2437                 break;
2438         }
2439 }