wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2010, 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 "p2p_supplicant.h"
  42 #include "bgscan.h"
  43 #include "ap.h"
  44 #include "bss.h"
  45 #include "mlme.h"
  46 #include "scan.h"
  47
  48
  49 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  50 {
  51         struct wpa_ssid *ssid, *old_ssid;
  52
  53         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  54                 return 0;
  55
  56         wpa_printf(MSG_DEBUG, "Select network based on association "
  57                    "information");
  58         ssid = wpa_supplicant_get_ssid(wpa_s);
  59         if (ssid == NULL) {
  60                 wpa_printf(MSG_INFO, "No network configuration found for the "
  61                            "current AP");
  62                 return -1;
  63         }
  64
  65         if (ssid->disabled) {
  66                 wpa_printf(MSG_DEBUG, "Selected network is disabled");
  67                 return -1;
  68         }
  69
  70         wpa_printf(MSG_DEBUG, "Network configuration found for the current "
  71                    "AP");
  72         if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
  73                               WPA_KEY_MGMT_WPA_NONE |
  74                               WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
  75                               WPA_KEY_MGMT_PSK_SHA256 |
  76                               WPA_KEY_MGMT_IEEE8021X_SHA256)) {
  77                 u8 wpa_ie[80];
  78                 size_t wpa_ie_len = sizeof(wpa_ie);
  79                 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
  80                                           wpa_ie, &wpa_ie_len);
  81         } else {
  82                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  83         }
  84
  85         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
  86                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
  87         old_ssid = wpa_s->current_ssid;
  88         wpa_s->current_ssid = ssid;
  89         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
  90         wpa_supplicant_initiate_eapol(wpa_s);
  91         if (old_ssid != wpa_s->current_ssid)
  92                 wpas_notify_network_changed(wpa_s);
  93
  94         return 0;
  95 }
  96
  97
  98 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
  99                                                 void *sock_ctx)
 100 {
 101         struct wpa_supplicant *wpa_s = eloop_ctx;
 102
 103         if (wpa_s->countermeasures) {
 104                 wpa_s->countermeasures = 0;
 105                 wpa_drv_set_countermeasures(wpa_s, 0);
 106                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 107                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 108         }
 109 }
 110
 111
 112 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 113 {
 114         int bssid_changed;
 115
 116         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 117                 return;
 118
 119         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 120         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 121         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 122         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 123         wpa_s->current_bss = NULL;
 124         wpa_s->assoc_freq = 0;
 125         if (bssid_changed)
 126                 wpas_notify_bssid_changed(wpa_s);
 127
 128         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 129         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 130         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 131                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 132         wpa_s->ap_ies_from_associnfo = 0;
 133 }
 134
 135
 136 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 137 {
 138         struct wpa_ie_data ie;
 139         int pmksa_set = -1;
 140         size_t i;
 141
 142         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 143             ie.pmkid == NULL)
 144                 return;
 145
 146         for (i = 0; i < ie.num_pmkid; i++) {
 147                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 148                                                     ie.pmkid + i * PMKID_LEN,
 149                                                     NULL, NULL, 0);
 150                 if (pmksa_set == 0) {
 151                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 152                         break;
 153                 }
 154         }
 155
 156         wpa_printf(MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from PMKSA "
 157                    "cache", pmksa_set == 0 ? "" : "not ");
 158 }
 159
 160
 161 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 162                                                  union wpa_event_data *data)
 163 {
 164         if (data == NULL) {
 165                 wpa_printf(MSG_DEBUG, "RSN: No data in PMKID candidate event");
 166                 return;
 167         }
 168         wpa_printf(MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 169                    " index=%d preauth=%d",
 170                    MAC2STR(data->pmkid_candidate.bssid),
 171                    data->pmkid_candidate.index,
 172                    data->pmkid_candidate.preauth);
 173
 174         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 175                             data->pmkid_candidate.index,
 176                             data->pmkid_candidate.preauth);
 177 }
 178
 179
 180 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 181 {
 182         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 183             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 184                 return 0;
 185
 186 #ifdef IEEE8021X_EAPOL
 187         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 188             wpa_s->current_ssid &&
 189             !(wpa_s->current_ssid->eapol_flags &
 190               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 191                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 192                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 193                  * plaintext or static WEP keys). */
 194                 return 0;
 195         }
 196 #endif /* IEEE8021X_EAPOL */
 197
 198         return 1;
 199 }
 200
 201
 202 /**
 203  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 204  * @wpa_s: pointer to wpa_supplicant data
 205  * @ssid: Configuration data for the network
 206  * Returns: 0 on success, -1 on failure
 207  *
 208  * This function is called when starting authentication with a network that is
 209  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 210  */
 211 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 212                               struct wpa_ssid *ssid)
 213 {
 214 #ifdef IEEE8021X_EAPOL
 215         int aka = 0, sim = 0, type;
 216
 217         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 218                 return 0;
 219
 220         if (ssid->eap.eap_methods == NULL) {
 221                 sim = 1;
 222                 aka = 1;
 223         } else {
 224                 struct eap_method_type *eap = ssid->eap.eap_methods;
 225                 while (eap->vendor != EAP_VENDOR_IETF ||
 226                        eap->method != EAP_TYPE_NONE) {
 227                         if (eap->vendor == EAP_VENDOR_IETF) {
 228                                 if (eap->method == EAP_TYPE_SIM)
 229                                         sim = 1;
 230                                 else if (eap->method == EAP_TYPE_AKA)
 231                                         aka = 1;
 232                         }
 233                         eap++;
 234                 }
 235         }
 236
 237         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 238                 sim = 0;
 239         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
 240                 aka = 0;
 241
 242         if (!sim && !aka) {
 243                 wpa_printf(MSG_DEBUG, "Selected network is configured to use "
 244                            "SIM, but neither EAP-SIM nor EAP-AKA are enabled");
 245                 return 0;
 246         }
 247
 248         wpa_printf(MSG_DEBUG, "Selected network is configured to use SIM "
 249                    "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 250         if (sim && aka)
 251                 type = SCARD_TRY_BOTH;
 252         else if (aka)
 253                 type = SCARD_USIM_ONLY;
 254         else
 255                 type = SCARD_GSM_SIM_ONLY;
 256
 257         wpa_s->scard = scard_init(type);
 258         if (wpa_s->scard == NULL) {
 259                 wpa_printf(MSG_WARNING, "Failed to initialize SIM "
 260                            "(pcsc-lite)");
 261                 return -1;
 262         }
 263         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 264         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 265 #endif /* IEEE8021X_EAPOL */
 266
 267         return 0;
 268 }
 269
 270
 271 #ifndef CONFIG_NO_SCAN_PROCESSING
 272 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
 273                                         struct wpa_ssid *ssid)
 274 {
 275         int i, privacy = 0;
 276
 277         if (ssid->mixed_cell)
 278                 return 1;
 279
 280 #ifdef CONFIG_WPS
 281         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 282                 return 1;
 283 #endif /* CONFIG_WPS */
 284
 285         for (i = 0; i < NUM_WEP_KEYS; i++) {
 286                 if (ssid->wep_key_len[i]) {
 287                         privacy = 1;
 288                         break;
 289                 }
 290         }
 291 #ifdef IEEE8021X_EAPOL
 292         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 293             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 294                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 295                 privacy = 1;
 296 #endif /* IEEE8021X_EAPOL */
 297
 298         if (bss->caps & IEEE80211_CAP_PRIVACY)
 299                 return privacy;
 300         return !privacy;
 301 }
 302
 303
 304 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 305                                          struct wpa_ssid *ssid,
 306                                          struct wpa_scan_res *bss)
 307 {
 308         struct wpa_ie_data ie;
 309         int proto_match = 0;
 310         const u8 *rsn_ie, *wpa_ie;
 311         int ret;
 312         int wep_ok;
 313
 314         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 315         if (ret >= 0)
 316                 return ret;
 317
 318         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 319         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 320                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 321                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 322                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 323
 324         rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 325         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 326                 proto_match++;
 327
 328                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 329                         wpa_printf(MSG_DEBUG, "   skip RSN IE - parse failed");
 330                         break;
 331                 }
 332
 333                 if (wep_ok &&
 334                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 335                 {
 336                         wpa_printf(MSG_DEBUG, "   selected based on TSN in "
 337                                    "RSN IE");
 338                         return 1;
 339                 }
 340
 341                 if (!(ie.proto & ssid->proto)) {
 342                         wpa_printf(MSG_DEBUG, "   skip RSN IE - proto "
 343                                    "mismatch");
 344                         break;
 345                 }
 346
 347                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 348                         wpa_printf(MSG_DEBUG, "   skip RSN IE - PTK cipher "
 349                                    "mismatch");
 350                         break;
 351                 }
 352
 353                 if (!(ie.group_cipher & ssid->group_cipher)) {
 354                         wpa_printf(MSG_DEBUG, "   skip RSN IE - GTK cipher "
 355                                    "mismatch");
 356                         break;
 357                 }
 358
 359                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 360                         wpa_printf(MSG_DEBUG, "   skip RSN IE - key mgmt "
 361                                    "mismatch");
 362                         break;
 363                 }
 364
 365 #ifdef CONFIG_IEEE80211W
 366                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 367                     ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
 368                         wpa_printf(MSG_DEBUG, "   skip RSN IE - no mgmt frame "
 369                                    "protection");
 370                         break;
 371                 }
 372 #endif /* CONFIG_IEEE80211W */
 373
 374                 wpa_printf(MSG_DEBUG, "   selected based on RSN IE");
 375                 return 1;
 376         }
 377
 378         wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 379         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 380                 proto_match++;
 381
 382                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 383                         wpa_printf(MSG_DEBUG, "   skip WPA IE - parse failed");
 384                         break;
 385                 }
 386
 387                 if (wep_ok &&
 388                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 389                 {
 390                         wpa_printf(MSG_DEBUG, "   selected based on TSN in "
 391                                    "WPA IE");
 392                         return 1;
 393                 }
 394
 395                 if (!(ie.proto & ssid->proto)) {
 396                         wpa_printf(MSG_DEBUG, "   skip WPA IE - proto "
 397                                    "mismatch");
 398                         break;
 399                 }
 400
 401                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 402                         wpa_printf(MSG_DEBUG, "   skip WPA IE - PTK cipher "
 403                                    "mismatch");
 404                         break;
 405                 }
 406
 407                 if (!(ie.group_cipher & ssid->group_cipher)) {
 408                         wpa_printf(MSG_DEBUG, "   skip WPA IE - GTK cipher "
 409                                    "mismatch");
 410                         break;
 411                 }
 412
 413                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 414                         wpa_printf(MSG_DEBUG, "   skip WPA IE - key mgmt "
 415                                    "mismatch");
 416                         break;
 417                 }
 418
 419                 wpa_printf(MSG_DEBUG, "   selected based on WPA IE");
 420                 return 1;
 421         }
 422
 423         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 424             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 425                 wpa_printf(MSG_DEBUG, "   skip - no WPA/RSN proto match");
 426                 return 0;
 427         }
 428
 429         /* Allow in non-WPA configuration */
 430         return 1;
 431 }
 432
 433
 434 static int freq_allowed(int *freqs, int freq)
 435 {
 436         int i;
 437
 438         if (freqs == NULL)
 439                 return 1;
 440
 441         for (i = 0; freqs[i]; i++)
 442                 if (freqs[i] == freq)
 443                         return 1;
 444         return 0;
 445 }
 446
 447
 448 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 449                                             int i, struct wpa_scan_res *bss,
 450                                             struct wpa_ssid *group)
 451 {
 452         const u8 *ssid_;
 453         u8 wpa_ie_len, rsn_ie_len, ssid_len;
 454         int wpa;
 455         struct wpa_blacklist *e;
 456         const u8 *ie;
 457         struct wpa_ssid *ssid;
 458
 459         ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 460         ssid_ = ie ? ie + 2 : (u8 *) "";
 461         ssid_len = ie ? ie[1] : 0;
 462
 463         ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 464         wpa_ie_len = ie ? ie[1] : 0;
 465
 466         ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 467         rsn_ie_len = ie ? ie[1] : 0;
 468
 469         wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 470                    "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
 471                    i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
 472                    wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 473                    wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ?
 474                    " wps" : "");
 475
 476         e = wpa_blacklist_get(wpa_s, bss->bssid);
 477         if (e) {
 478                 int limit = 1;
 479                 if (wpa_supplicant_enabled_networks(wpa_s->conf) == 1) {
 480                         /*
 481                          * When only a single network is enabled, we can
 482                          * trigger blacklisting on the first failure. This
 483                          * should not be done with multiple enabled networks to
 484                          * avoid getting forced to move into a worse ESS on
 485                          * single error if there are no other BSSes of the
 486                          * current ESS.
 487                          */
 488                         limit = 0;
 489                 }
 490                 if (e->count > limit) {
 491                         wpa_printf(MSG_DEBUG, "   skip - blacklisted "
 492                                    "(count=%d limit=%d)", e->count, limit);
 493                         return 0;
 494                 }
 495         }
 496
 497         if (ssid_len == 0) {
 498                 wpa_printf(MSG_DEBUG, "   skip - SSID not known");
 499                 return 0;
 500         }
 501
 502         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 503
 504         for (ssid = group; ssid; ssid = ssid->pnext) {
 505                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 506
 507                 if (ssid->disabled) {
 508                         wpa_printf(MSG_DEBUG, "   skip - disabled");
 509                         continue;
 510                 }
 511
 512 #ifdef CONFIG_WPS
 513                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 514                         wpa_printf(MSG_DEBUG, "   skip - blacklisted (WPS)");
 515                         continue;
 516                 }
 517
 518                 if (wpa && ssid->ssid_len == 0 &&
 519                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 520                         check_ssid = 0;
 521
 522                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 523                         /* Only allow wildcard SSID match if an AP
 524                          * advertises active WPS operation that matches
 525                          * with our mode. */
 526                         check_ssid = 1;
 527                         if (ssid->ssid_len == 0 &&
 528                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 529                                 check_ssid = 0;
 530                 }
 531 #endif /* CONFIG_WPS */
 532
 533                 if (check_ssid &&
 534                     (ssid_len != ssid->ssid_len ||
 535                      os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
 536                         wpa_printf(MSG_DEBUG, "   skip - SSID mismatch");
 537                         continue;
 538                 }
 539
 540                 if (ssid->bssid_set &&
 541                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 542                         wpa_printf(MSG_DEBUG, "   skip - BSSID mismatch");
 543                         continue;
 544                 }
 545
 546                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 547                         continue;
 548
 549                 if (!wpa &&
 550                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 551                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 552                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 553                         wpa_printf(MSG_DEBUG, "   skip - non-WPA network not "
 554                                    "allowed");
 555                         continue;
 556                 }
 557
 558                 if (!wpa && !wpa_supplicant_match_privacy(bss, ssid)) {
 559                         wpa_printf(MSG_DEBUG, "   skip - privacy mismatch");
 560                         continue;
 561                 }
 562
 563                 if (!wpa && (bss->caps & IEEE80211_CAP_IBSS)) {
 564                         wpa_printf(MSG_DEBUG, "   skip - IBSS (adhoc) "
 565                                    "network");
 566                         continue;
 567                 }
 568
 569                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 570                         wpa_printf(MSG_DEBUG, "   skip - frequency not "
 571                                    "allowed");
 572                         continue;
 573                 }
 574
 575 #ifdef CONFIG_P2P
 576                 /*
 577                  * TODO: skip the AP if its P2P IE has Group Formation
 578                  * bit set in the P2P Group Capability Bitmap and we
 579                  * are not in Group Formation with that device.
 580                  */
 581 #endif /* CONFIG_P2P */
 582
 583                 /* Matching configuration found */
 584                 return ssid;
 585         }
 586
 587         /* No matching configuration found */
 588         return 0;
 589 }
 590
 591
 592 static struct wpa_bss *
 593 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 594                           struct wpa_scan_results *scan_res,
 595                           struct wpa_ssid *group,
 596                           struct wpa_ssid **selected_ssid)
 597 {
 598         size_t i;
 599
 600         wpa_printf(MSG_DEBUG, "Selecting BSS from priority group %d",
 601                    group->priority);
 602
 603         for (i = 0; i < scan_res->num; i++) {
 604                 struct wpa_scan_res *bss = scan_res->res[i];
 605                 const u8 *ie, *ssid;
 606                 u8 ssid_len;
 607
 608                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
 609                 if (!*selected_ssid)
 610                         continue;
 611
 612                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 613                 ssid = ie ? ie + 2 : (u8 *) "";
 614                 ssid_len = ie ? ie[1] : 0;
 615
 616                 wpa_printf(MSG_DEBUG, "   selected BSS " MACSTR " ssid='%s'",
 617                            MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
 618                 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
 619         }
 620
 621         return NULL;
 622 }
 623
 624
 625 static struct wpa_bss *
 626 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 627                             struct wpa_scan_results *scan_res,
 628                             struct wpa_ssid **selected_ssid)
 629 {
 630         struct wpa_bss *selected = NULL;
 631         int prio;
 632
 633         while (selected == NULL) {
 634                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 635                         selected = wpa_supplicant_select_bss(
 636                                 wpa_s, scan_res, wpa_s->conf->pssid[prio],
 637                                 selected_ssid);
 638                         if (selected)
 639                                 break;
 640                 }
 641
 642                 if (selected == NULL && wpa_s->blacklist) {
 643                         wpa_printf(MSG_DEBUG, "No APs found - clear blacklist "
 644                                    "and try again");
 645                         wpa_blacklist_clear(wpa_s);
 646                         wpa_s->blacklist_cleared++;
 647                 } else if (selected == NULL)
 648                         break;
 649         }
 650
 651         return selected;
 652 }
 653
 654
 655 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 656                                         int timeout_sec, int timeout_usec)
 657 {
 658         if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
 659                 /*
 660                  * No networks are enabled; short-circuit request so
 661                  * we don't wait timeout seconds before transitioning
 662                  * to INACTIVE state.
 663                  */
 664                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 665                 return;
 666         }
 667         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 668 }
 669
 670
 671 void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 672                             struct wpa_bss *selected,
 673                             struct wpa_ssid *ssid)
 674 {
 675         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 676                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 677                         "PBC session overlap");
 678 #ifdef CONFIG_P2P
 679                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
 680                         return;
 681 #endif /* CONFIG_P2P */
 682
 683 #ifdef CONFIG_WPS
 684                 wpas_wps_cancel(wpa_s);
 685 #endif /* CONFIG_WPS */
 686                 return;
 687         }
 688
 689         /*
 690          * Do not trigger new association unless the BSSID has changed or if
 691          * reassociation is requested. If we are in process of associating with
 692          * the selected BSSID, do not trigger new attempt.
 693          */
 694         if (wpa_s->reassociate ||
 695             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 696              (wpa_s->wpa_state != WPA_ASSOCIATING ||
 697               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 698               0))) {
 699                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 700                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 701                         return;
 702                 }
 703                 wpa_supplicant_associate(wpa_s, selected, ssid);
 704         } else {
 705                 wpa_printf(MSG_DEBUG, "Already associated with the selected "
 706                            "AP");
 707         }
 708 }
 709
 710
 711 static struct wpa_ssid *
 712 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 713 {
 714         int prio;
 715         struct wpa_ssid *ssid;
 716
 717         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 718                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 719                 {
 720                         if (ssid->disabled)
 721                                 continue;
 722                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 723                             ssid->mode == IEEE80211_MODE_AP)
 724                                 return ssid;
 725                 }
 726         }
 727         return NULL;
 728 }
 729
 730
 731 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 732  * on BSS added and BSS changed events */
 733 static void wpa_supplicant_rsn_preauth_scan_results(
 734         struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res)
 735 {
 736         int i;
 737
 738         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 739                 return;
 740
 741         for (i = scan_res->num - 1; i >= 0; i--) {
 742                 const u8 *ssid, *rsn;
 743                 struct wpa_scan_res *r;
 744
 745                 r = scan_res->res[i];
 746
 747                 ssid = wpa_scan_get_ie(r, WLAN_EID_SSID);
 748                 if (ssid == NULL)
 749                         continue;
 750
 751                 rsn = wpa_scan_get_ie(r, WLAN_EID_RSN);
 752                 if (rsn == NULL)
 753                         continue;
 754
 755                 rsn_preauth_scan_result(wpa_s->wpa, r->bssid, ssid, rsn);
 756         }
 757
 758 }
 759
 760
 761 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
 762                                        struct wpa_bss *selected,
 763                                        struct wpa_ssid *ssid,
 764                                        struct wpa_scan_results *scan_res)
 765 {
 766         size_t i;
 767         struct wpa_scan_res *current_bss = NULL;
 768         int min_diff;
 769
 770         if (wpa_s->reassociate)
 771                 return 1; /* explicit request to reassociate */
 772         if (wpa_s->wpa_state < WPA_ASSOCIATED)
 773                 return 1; /* we are not associated; continue */
 774         if (wpa_s->current_ssid == NULL)
 775                 return 1; /* unknown current SSID */
 776         if (wpa_s->current_ssid != ssid)
 777                 return 1; /* different network block */
 778
 779         for (i = 0; i < scan_res->num; i++) {
 780                 struct wpa_scan_res *res = scan_res->res[i];
 781                 const u8 *ie;
 782                 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
 783                         continue;
 784
 785                 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 786                 if (ie == NULL)
 787                         continue;
 788                 if (ie[1] != wpa_s->current_ssid->ssid_len ||
 789                     os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
 790                         continue;
 791                 current_bss = res;
 792                 break;
 793         }
 794
 795         if (!current_bss)
 796                 return 1; /* current BSS not seen in scan results */
 797
 798         wpa_printf(MSG_DEBUG, "Considering within-ESS reassociation");
 799         wpa_printf(MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
 800                    MAC2STR(current_bss->bssid), current_bss->level);
 801         wpa_printf(MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
 802                    MAC2STR(selected->bssid), selected->level);
 803
 804         if (wpa_s->current_ssid->bssid_set &&
 805             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
 806             0) {
 807                 wpa_printf(MSG_DEBUG, "Allow reassociation - selected BSS has "
 808                            "preferred BSSID");
 809                 return 1;
 810         }
 811
 812         min_diff = 2;
 813         if (current_bss->level < 0) {
 814                 if (current_bss->level < -85)
 815                         min_diff = 1;
 816                 else if (current_bss->level < -80)
 817                         min_diff = 2;
 818                 else if (current_bss->level < -75)
 819                         min_diff = 3;
 820                 else if (current_bss->level < -70)
 821                         min_diff = 4;
 822                 else
 823                         min_diff = 5;
 824         }
 825         if (abs(current_bss->level - selected->level) < min_diff) {
 826                 wpa_printf(MSG_DEBUG, "Skip roam - too small difference in "
 827                            "signal level");
 828                 return 0;
 829         }
 830
 831         return 1;
 832 }
 833
 834
 835 static void _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 836                                                union wpa_event_data *data)
 837 {
 838         struct wpa_bss *selected;
 839         struct wpa_ssid *ssid = NULL;
 840         struct wpa_scan_results *scan_res;
 841         int ap = 0;
 842
 843 #ifdef CONFIG_AP
 844         if (wpa_s->ap_iface)
 845                 ap = 1;
 846 #endif /* CONFIG_AP */
 847
 848         wpa_supplicant_notify_scanning(wpa_s, 0);
 849
 850         scan_res = wpa_supplicant_get_scan_results(wpa_s,
 851                                                    data ? &data->scan_info :
 852                                                    NULL, 1);
 853         if (scan_res == NULL) {
 854                 if (wpa_s->conf->ap_scan == 2 || ap)
 855                         return;
 856                 wpa_printf(MSG_DEBUG, "Failed to get scan results - try "
 857                            "scanning again");
 858                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
 859                 return;
 860         }
 861
 862 #ifndef CONFIG_NO_RANDOM_POOL
 863         size_t i, num;
 864         num = scan_res->num;
 865         if (num > 10)
 866                 num = 10;
 867         for (i = 0; i < num; i++) {
 868                 u8 buf[5];
 869                 struct wpa_scan_res *res = scan_res->res[i];
 870                 buf[0] = res->bssid[5];
 871                 buf[1] = res->qual & 0xff;
 872                 buf[2] = res->noise & 0xff;
 873                 buf[3] = res->level & 0xff;
 874                 buf[4] = res->tsf & 0xff;
 875                 random_add_randomness(buf, sizeof(buf));
 876         }
 877 #endif /* CONFIG_NO_RANDOM_POOL */
 878
 879         if (wpa_s->scan_res_handler) {
 880                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
 881                                          struct wpa_scan_results *scan_res);
 882
 883                 scan_res_handler = wpa_s->scan_res_handler;
 884                 wpa_s->scan_res_handler = NULL;
 885                 scan_res_handler(wpa_s, scan_res);
 886
 887                 wpa_scan_results_free(scan_res);
 888                 return;
 889         }
 890
 891         if (ap) {
 892                 wpa_printf(MSG_DEBUG, "Ignore scan results in AP mode");
 893                 wpa_scan_results_free(scan_res);
 894                 return;
 895         }
 896
 897         wpa_printf(MSG_DEBUG, "%s: New scan results available", wpa_s->ifname);
 898         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
 899         wpas_notify_scan_results(wpa_s);
 900
 901         wpas_notify_scan_done(wpa_s, 1);
 902
 903         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
 904                 wpa_scan_results_free(scan_res);
 905                 return;
 906         }
 907
 908         if (wpa_s->disconnected) {
 909                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 910                 wpa_scan_results_free(scan_res);
 911                 return;
 912         }
 913
 914         if (bgscan_notify_scan(wpa_s, scan_res) == 1) {
 915                 wpa_scan_results_free(scan_res);
 916                 return;
 917         }
 918
 919         wpa_supplicant_rsn_preauth_scan_results(wpa_s, scan_res);
 920
 921         selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
 922
 923         if (selected) {
 924                 int skip;
 925                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
 926                                                     scan_res);
 927                 wpa_scan_results_free(scan_res);
 928                 if (skip)
 929                         return;
 930                 wpa_supplicant_connect(wpa_s, selected, ssid);
 931         } else {
 932                 wpa_scan_results_free(scan_res);
 933                 wpa_printf(MSG_DEBUG, "No suitable network found");
 934                 ssid = wpa_supplicant_pick_new_network(wpa_s);
 935                 if (ssid) {
 936                         wpa_printf(MSG_DEBUG, "Setup a new network");
 937                         wpa_supplicant_associate(wpa_s, NULL, ssid);
 938                 } else {
 939                         int timeout_sec = 5;
 940                         int timeout_usec = 0;
 941 #ifdef CONFIG_P2P
 942                         if (wpa_s->p2p_in_provisioning) {
 943                                 /*
 944                                  * Use shorter wait during P2P Provisioning
 945                                  * state to speed up group formation.
 946                                  */
 947                                 timeout_sec = 0;
 948                                 timeout_usec = 250000;
 949                         }
 950 #endif /* CONFIG_P2P */
 951                         wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
 952                                                     timeout_usec);
 953                 }
 954         }
 955 }
 956
 957
 958 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 959                                               union wpa_event_data *data)
 960 {
 961         const char *rn, *rn2;
 962         struct wpa_supplicant *ifs;
 963
 964         _wpa_supplicant_event_scan_results(wpa_s, data);
 965
 966         /*
 967          * Check other interfaces to see if they have the same radio-name. If
 968          * so, they get updated with this same scan info.
 969          */
 970         if (!wpa_s->driver->get_radio_name)
 971                 return;
 972
 973         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
 974         if (rn == NULL || rn[0] == '\0')
 975                 return;
 976
 977         wpa_printf(MSG_DEBUG, "%s: Checking for other virtual interfaces "
 978                    "sharing same radio (%s) in event_scan_results",
 979                    wpa_s->ifname, rn);
 980
 981         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 982                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
 983                         continue;
 984
 985                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
 986                 if (rn2 && os_strcmp(rn, rn2) == 0) {
 987                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
 988                                    "sibling", ifs->ifname);
 989                         _wpa_supplicant_event_scan_results(ifs, data);
 990                 }
 991         }
 992 }
 993
 994 #endif /* CONFIG_NO_SCAN_PROCESSING */
 995
 996
 997 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
 998                                           union wpa_event_data *data)
 999 {
1000         int l, len, found = 0, wpa_found, rsn_found;
1001         const u8 *p;
1002
1003         wpa_printf(MSG_DEBUG, "Association info event");
1004         if (data->assoc_info.req_ies)
1005                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1006                             data->assoc_info.req_ies_len);
1007         if (data->assoc_info.resp_ies)
1008                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1009                             data->assoc_info.resp_ies_len);
1010         if (data->assoc_info.beacon_ies)
1011                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1012                             data->assoc_info.beacon_ies,
1013                             data->assoc_info.beacon_ies_len);
1014         if (data->assoc_info.freq)
1015                 wpa_printf(MSG_DEBUG, "freq=%u MHz", data->assoc_info.freq);
1016
1017         p = data->assoc_info.req_ies;
1018         l = data->assoc_info.req_ies_len;
1019
1020         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1021         while (p && l >= 2) {
1022                 len = p[1] + 2;
1023                 if (len > l) {
1024                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1025                                     p, l);
1026                         break;
1027                 }
1028                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1029                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1030                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1031                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1032                                 break;
1033                         found = 1;
1034                         wpa_find_assoc_pmkid(wpa_s);
1035                         break;
1036                 }
1037                 l -= len;
1038                 p += len;
1039         }
1040         if (!found && data->assoc_info.req_ies)
1041                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1042
1043 #ifdef CONFIG_IEEE80211R
1044 #ifdef CONFIG_SME
1045         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1046                 u8 bssid[ETH_ALEN];
1047                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1048                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1049                                                  data->assoc_info.resp_ies,
1050                                                  data->assoc_info.resp_ies_len,
1051                                                  bssid) < 0) {
1052                         wpa_printf(MSG_DEBUG, "FT: Validation of "
1053                                    "Reassociation Response failed");
1054                         wpa_supplicant_deauthenticate(
1055                                 wpa_s, WLAN_REASON_INVALID_IE);
1056                         return -1;
1057                 }
1058         }
1059
1060         p = data->assoc_info.resp_ies;
1061         l = data->assoc_info.resp_ies_len;
1062
1063 #ifdef CONFIG_WPS_STRICT
1064         if (wpa_s->current_ssid &&
1065             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1066                 struct wpabuf *wps;
1067                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1068                 if (wps == NULL) {
1069                         wpa_printf(MSG_INFO, "WPS-STRICT: AP did not include "
1070                                    "WPS IE in (Re)Association Response");
1071                         return -1;
1072                 }
1073
1074                 if (wps_validate_assoc_resp(wps) < 0) {
1075                         wpabuf_free(wps);
1076                         wpa_supplicant_deauthenticate(
1077                                 wpa_s, WLAN_REASON_INVALID_IE);
1078                         return -1;
1079                 }
1080                 wpabuf_free(wps);
1081         }
1082 #endif /* CONFIG_WPS_STRICT */
1083
1084         /* Go through the IEs and make a copy of the MDIE, if present. */
1085         while (p && l >= 2) {
1086                 len = p[1] + 2;
1087                 if (len > l) {
1088                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1089                                     p, l);
1090                         break;
1091                 }
1092                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1093                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1094                         wpa_s->sme.ft_used = 1;
1095                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1096                                   MOBILITY_DOMAIN_ID_LEN);
1097                         break;
1098                 }
1099                 l -= len;
1100                 p += len;
1101         }
1102 #endif /* CONFIG_SME */
1103
1104         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1105                              data->assoc_info.resp_ies_len);
1106 #endif /* CONFIG_IEEE80211R */
1107
1108         /* WPA/RSN IE from Beacon/ProbeResp */
1109         p = data->assoc_info.beacon_ies;
1110         l = data->assoc_info.beacon_ies_len;
1111
1112         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1113          */
1114         wpa_found = rsn_found = 0;
1115         while (p && l >= 2) {
1116                 len = p[1] + 2;
1117                 if (len > l) {
1118                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1119                                     p, l);
1120                         break;
1121                 }
1122                 if (!wpa_found &&
1123                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1124                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1125                         wpa_found = 1;
1126                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1127                 }
1128
1129                 if (!rsn_found &&
1130                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1131                         rsn_found = 1;
1132                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1133                 }
1134
1135                 l -= len;
1136                 p += len;
1137         }
1138
1139         if (!wpa_found && data->assoc_info.beacon_ies)
1140                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1141         if (!rsn_found && data->assoc_info.beacon_ies)
1142                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1143         if (wpa_found || rsn_found)
1144                 wpa_s->ap_ies_from_associnfo = 1;
1145
1146         wpa_s->assoc_freq = data->assoc_info.freq;
1147
1148         return 0;
1149 }
1150
1151
1152 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1153                                        union wpa_event_data *data)
1154 {
1155         u8 bssid[ETH_ALEN];
1156         int ft_completed;
1157         int bssid_changed;
1158         struct wpa_driver_capa capa;
1159
1160 #ifdef CONFIG_AP
1161         if (wpa_s->ap_iface) {
1162                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1163                                     data->assoc_info.addr,
1164                                     data->assoc_info.req_ies,
1165                                     data->assoc_info.req_ies_len);
1166                 return;
1167         }
1168 #endif /* CONFIG_AP */
1169
1170         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1171         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1172                 return;
1173
1174         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1175         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1176                 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1177         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
1178             (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1179              os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
1180                 wpa_msg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1181                         MACSTR, MAC2STR(bssid));
1182                 random_add_randomness(bssid, ETH_ALEN);
1183                 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1184                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1185                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1186                 if (bssid_changed)
1187                         wpas_notify_bssid_changed(wpa_s);
1188
1189                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1190                         wpa_clear_keys(wpa_s, bssid);
1191                 }
1192                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1193                         wpa_supplicant_disassociate(
1194                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1195                         return;
1196                 }
1197                 if (wpa_s->current_ssid) {
1198                         struct wpa_bss *bss = NULL;
1199                         struct wpa_ssid *ssid = wpa_s->current_ssid;
1200                         if (ssid->ssid_len > 0)
1201                                 bss = wpa_bss_get(wpa_s, bssid,
1202                                                   ssid->ssid, ssid->ssid_len);
1203                         if (!bss)
1204                                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1205                         if (bss)
1206                                 wpa_s->current_bss = bss;
1207                 }
1208         }
1209
1210 #ifdef CONFIG_SME
1211         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1212         wpa_s->sme.prev_bssid_set = 1;
1213 #endif /* CONFIG_SME */
1214
1215         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1216         if (wpa_s->current_ssid) {
1217                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1218                  * initialized before association, but for other modes,
1219                  * initialize PC/SC here, if the current configuration needs
1220                  * smartcard or SIM/USIM. */
1221                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1222         }
1223         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1224         if (wpa_s->l2)
1225                 l2_packet_notify_auth_start(wpa_s->l2);
1226
1227         /*
1228          * Set portEnabled first to FALSE in order to get EAP state machine out
1229          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1230          * state machine may transit to AUTHENTICATING state based on obsolete
1231          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1232          * AUTHENTICATED without ever giving chance to EAP state machine to
1233          * reset the state.
1234          */
1235         if (!ft_completed) {
1236                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1237                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1238         }
1239         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1240                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1241         /* 802.1X::portControl = Auto */
1242         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1243         wpa_s->eapol_received = 0;
1244         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1245             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1246             (wpa_s->current_ssid &&
1247              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1248                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1249                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1250         } else if (!ft_completed) {
1251                 /* Timeout for receiving the first EAPOL packet */
1252                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1253         }
1254         wpa_supplicant_cancel_scan(wpa_s);
1255
1256         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1257             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1258                 /*
1259                  * We are done; the driver will take care of RSN 4-way
1260                  * handshake.
1261                  */
1262                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1263                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1264                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1265                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1266         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1267                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1268                 /*
1269                  * The driver will take care of RSN 4-way handshake, so we need
1270                  * to allow EAPOL supplicant to complete its work without
1271                  * waiting for WPA supplicant.
1272                  */
1273                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1274         }
1275
1276         if (wpa_s->pending_eapol_rx) {
1277                 struct os_time now, age;
1278                 os_get_time(&now);
1279                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1280                 if (age.sec == 0 && age.usec < 100000 &&
1281                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1282                     0) {
1283                         wpa_printf(MSG_DEBUG, "Process pending EAPOL frame "
1284                                    "that was received just before association "
1285                                    "notification");
1286                         wpa_supplicant_rx_eapol(
1287                                 wpa_s, wpa_s->pending_eapol_rx_src,
1288                                 wpabuf_head(wpa_s->pending_eapol_rx),
1289                                 wpabuf_len(wpa_s->pending_eapol_rx));
1290                 }
1291                 wpabuf_free(wpa_s->pending_eapol_rx);
1292                 wpa_s->pending_eapol_rx = NULL;
1293         }
1294
1295 #ifdef CONFIG_BGSCAN
1296         if (wpa_s->current_ssid != wpa_s->bgscan_ssid) {
1297                 bgscan_deinit(wpa_s);
1298                 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
1299                         if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
1300                                 wpa_printf(MSG_DEBUG, "Failed to initialize "
1301                                            "bgscan");
1302                                 /*
1303                                  * Live without bgscan; it is only used as a
1304                                  * roaming optimization, so the initial
1305                                  * connection is not affected.
1306                                  */
1307                         } else
1308                                 wpa_s->bgscan_ssid = wpa_s->current_ssid;
1309                 } else
1310                         wpa_s->bgscan_ssid = NULL;
1311         }
1312 #endif /* CONFIG_BGSCAN */
1313
1314         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1315              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1316             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1317             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1318                 /* Set static WEP keys again */
1319                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1320         }
1321
1322 #ifdef CONFIG_IBSS_RSN
1323         if (wpa_s->current_ssid &&
1324             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1325             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1326             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE)
1327                 ibss_rsn_connected(wpa_s->ibss_rsn);
1328 #endif /* CONFIG_IBSS_RSN */
1329 }
1330
1331
1332 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1333                                           u16 reason_code)
1334 {
1335         const u8 *bssid;
1336 #ifdef CONFIG_SME
1337         int authenticating;
1338         u8 prev_pending_bssid[ETH_ALEN];
1339
1340         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1341         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1342 #endif /* CONFIG_SME */
1343
1344         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1345                 /*
1346                  * At least Host AP driver and a Prism3 card seemed to be
1347                  * generating streams of disconnected events when configuring
1348                  * IBSS for WPA-None. Ignore them for now.
1349                  */
1350                 wpa_printf(MSG_DEBUG, "Disconnect event - ignore in "
1351                            "IBSS/WPA-None mode");
1352                 return;
1353         }
1354
1355         if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1356             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1357                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1358                         "pre-shared key may be incorrect");
1359         }
1360         if (!wpa_s->auto_reconnect_disabled ||
1361             wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1362                 wpa_printf(MSG_DEBUG, "WPA: Auto connect enabled: try to "
1363                            "reconnect (wps=%d)",
1364                            wpa_s->key_mgmt == WPA_KEY_MGMT_WPS);
1365                 if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1366                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1367         } else {
1368                 wpa_printf(MSG_DEBUG, "WPA: Auto connect disabled: do not try "
1369                            "to re-connect");
1370                 wpa_s->reassociate = 0;
1371                 wpa_s->disconnected = 1;
1372         }
1373         bssid = wpa_s->bssid;
1374         if (is_zero_ether_addr(bssid))
1375                 bssid = wpa_s->pending_bssid;
1376         wpas_connection_failed(wpa_s, bssid);
1377         wpa_sm_notify_disassoc(wpa_s->wpa);
1378         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1379                 " reason=%d",
1380                 MAC2STR(bssid), reason_code);
1381         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1382                 wpa_printf(MSG_DEBUG, "Disconnect event - remove keys");
1383                 wpa_s->keys_cleared = 0;
1384                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1385         }
1386         wpa_supplicant_mark_disassoc(wpa_s);
1387         bgscan_deinit(wpa_s);
1388         wpa_s->bgscan_ssid = NULL;
1389 #ifdef CONFIG_SME
1390         if (authenticating &&
1391             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
1392                 /*
1393                  * mac80211-workaround to force deauth on failed auth cmd,
1394                  * requires us to remain in authenticating state to allow the
1395                  * second authentication attempt to be continued properly.
1396                  */
1397                 wpa_printf(MSG_DEBUG, "SME: Allow pending authentication to "
1398                            "proceed after disconnection event");
1399                 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1400                 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1401         }
1402 #endif /* CONFIG_SME */
1403 }
1404
1405
1406 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1407 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
1408                                                     void *sock_ctx)
1409 {
1410         struct wpa_supplicant *wpa_s = eloop_ctx;
1411
1412         if (!wpa_s->pending_mic_error_report)
1413                 return;
1414
1415         wpa_printf(MSG_DEBUG, "WPA: Sending pending MIC error report");
1416         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1417         wpa_s->pending_mic_error_report = 0;
1418 }
1419 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1420
1421
1422 static void
1423 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1424                                          union wpa_event_data *data)
1425 {
1426         int pairwise;
1427         struct os_time t;
1428
1429         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1430         pairwise = (data && data->michael_mic_failure.unicast);
1431         os_get_time(&t);
1432         if ((wpa_s->last_michael_mic_error &&
1433              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1434             wpa_s->pending_mic_error_report) {
1435                 if (wpa_s->pending_mic_error_report) {
1436                         /*
1437                          * Send the pending MIC error report immediately since
1438                          * we are going to start countermeasures and AP better
1439                          * do the same.
1440                          */
1441                         wpa_sm_key_request(wpa_s->wpa, 1,
1442                                            wpa_s->pending_mic_error_pairwise);
1443                 }
1444
1445                 /* Send the new MIC error report immediately since we are going
1446                  * to start countermeasures and AP better do the same.
1447                  */
1448                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1449
1450                 /* initialize countermeasures */
1451                 wpa_s->countermeasures = 1;
1452                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1453
1454                 /*
1455                  * Need to wait for completion of request frame. We do not get
1456                  * any callback for the message completion, so just wait a
1457                  * short while and hope for the best. */
1458                 os_sleep(0, 10000);
1459
1460                 wpa_drv_set_countermeasures(wpa_s, 1);
1461                 wpa_supplicant_deauthenticate(wpa_s,
1462                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
1463                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1464                                      wpa_s, NULL);
1465                 eloop_register_timeout(60, 0,
1466                                        wpa_supplicant_stop_countermeasures,
1467                                        wpa_s, NULL);
1468                 /* TODO: mark the AP rejected for 60 second. STA is
1469                  * allowed to associate with another AP.. */
1470         } else {
1471 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1472                 if (wpa_s->mic_errors_seen) {
1473                         /*
1474                          * Reduce the effectiveness of Michael MIC error
1475                          * reports as a means for attacking against TKIP if
1476                          * more than one MIC failure is noticed with the same
1477                          * PTK. We delay the transmission of the reports by a
1478                          * random time between 0 and 60 seconds in order to
1479                          * force the attacker wait 60 seconds before getting
1480                          * the information on whether a frame resulted in a MIC
1481                          * failure.
1482                          */
1483                         u8 rval[4];
1484                         int sec;
1485
1486                         if (os_get_random(rval, sizeof(rval)) < 0)
1487                                 sec = os_random() % 60;
1488                         else
1489                                 sec = WPA_GET_BE32(rval) % 60;
1490                         wpa_printf(MSG_DEBUG, "WPA: Delay MIC error report %d "
1491                                    "seconds", sec);
1492                         wpa_s->pending_mic_error_report = 1;
1493                         wpa_s->pending_mic_error_pairwise = pairwise;
1494                         eloop_cancel_timeout(
1495                                 wpa_supplicant_delayed_mic_error_report,
1496                                 wpa_s, NULL);
1497                         eloop_register_timeout(
1498                                 sec, os_random() % 1000000,
1499                                 wpa_supplicant_delayed_mic_error_report,
1500                                 wpa_s, NULL);
1501                 } else {
1502                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1503                 }
1504 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1505                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1506 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1507         }
1508         wpa_s->last_michael_mic_error = t.sec;
1509         wpa_s->mic_errors_seen++;
1510 }
1511
1512
1513 #ifdef CONFIG_TERMINATE_ONLASTIF
1514 static int any_interfaces(struct wpa_supplicant *head)
1515 {
1516         struct wpa_supplicant *wpa_s;
1517
1518         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1519                 if (!wpa_s->interface_removed)
1520                         return 1;
1521         return 0;
1522 }
1523 #endif /* CONFIG_TERMINATE_ONLASTIF */
1524
1525
1526 static void
1527 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1528                                       union wpa_event_data *data)
1529 {
1530         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1531                 return;
1532
1533         switch (data->interface_status.ievent) {
1534         case EVENT_INTERFACE_ADDED:
1535                 if (!wpa_s->interface_removed)
1536                         break;
1537                 wpa_s->interface_removed = 0;
1538                 wpa_printf(MSG_DEBUG, "Configured interface was added.");
1539                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1540                         wpa_printf(MSG_INFO, "Failed to initialize the driver "
1541                                    "after interface was added.");
1542                 }
1543                 break;
1544         case EVENT_INTERFACE_REMOVED:
1545                 wpa_printf(MSG_DEBUG, "Configured interface was removed.");
1546                 wpa_s->interface_removed = 1;
1547                 wpa_supplicant_mark_disassoc(wpa_s);
1548                 l2_packet_deinit(wpa_s->l2);
1549                 wpa_s->l2 = NULL;
1550 #ifdef CONFIG_TERMINATE_ONLASTIF
1551                 /* check if last interface */
1552                 if (!any_interfaces(wpa_s->global->ifaces))
1553                         eloop_terminate();
1554 #endif /* CONFIG_TERMINATE_ONLASTIF */
1555                 break;
1556         }
1557 }
1558
1559
1560 #ifdef CONFIG_PEERKEY
1561 static void
1562 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1563                               union wpa_event_data *data)
1564 {
1565         if (data == NULL)
1566                 return;
1567         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1568 }
1569 #endif /* CONFIG_PEERKEY */
1570
1571
1572 #ifdef CONFIG_IEEE80211R
1573 static void
1574 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1575                                  union wpa_event_data *data)
1576 {
1577         if (data == NULL)
1578                 return;
1579
1580         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1581                                     data->ft_ies.ies_len,
1582                                     data->ft_ies.ft_action,
1583                                     data->ft_ies.target_ap,
1584                                     data->ft_ies.ric_ies,
1585                                     data->ft_ies.ric_ies_len) < 0) {
1586                 /* TODO: prevent MLME/driver from trying to associate? */
1587         }
1588 }
1589 #endif /* CONFIG_IEEE80211R */
1590
1591
1592 #ifdef CONFIG_IBSS_RSN
1593 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1594                                                 union wpa_event_data *data)
1595 {
1596         struct wpa_ssid *ssid;
1597         if (data == NULL)
1598                 return;
1599         ssid = wpa_s->current_ssid;
1600         if (ssid == NULL)
1601                 return;
1602         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
1603                 return;
1604
1605         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1606 }
1607 #endif /* CONFIG_IBSS_RSN */
1608
1609
1610 #ifdef CONFIG_IEEE80211R
1611 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1612                          size_t len)
1613 {
1614         const u8 *sta_addr, *target_ap_addr;
1615         u16 status;
1616
1617         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1618         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1619                 return; /* only SME case supported for now */
1620         if (len < 1 + 2 * ETH_ALEN + 2)
1621                 return;
1622         if (data[0] != 2)
1623                 return; /* Only FT Action Response is supported for now */
1624         sta_addr = data + 1;
1625         target_ap_addr = data + 1 + ETH_ALEN;
1626         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1627         wpa_printf(MSG_DEBUG, "FT: Received FT Action Response: STA " MACSTR
1628                    " TargetAP " MACSTR " status %u",
1629                    MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1630
1631         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1632                 wpa_printf(MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1633                            " in FT Action Response", MAC2STR(sta_addr));
1634                 return;
1635         }
1636
1637         if (status) {
1638                 wpa_printf(MSG_DEBUG, "FT: FT Action Response indicates "
1639                            "failure (status code %d)", status);
1640                 /* TODO: report error to FT code(?) */
1641                 return;
1642         }
1643
1644         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1645                                     len - (1 + 2 * ETH_ALEN + 2), 1,
1646                                     target_ap_addr, NULL, 0) < 0)
1647                 return;
1648
1649 #ifdef CONFIG_SME
1650         {
1651                 struct wpa_bss *bss;
1652                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1653                 if (bss)
1654                         wpa_s->sme.freq = bss->freq;
1655                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1656                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1657                               WLAN_AUTH_FT);
1658         }
1659 #endif /* CONFIG_SME */
1660 }
1661 #endif /* CONFIG_IEEE80211R */
1662
1663
1664 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
1665                                                struct unprot_deauth *e)
1666 {
1667 #ifdef CONFIG_IEEE80211W
1668         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
1669                    "dropped: " MACSTR " -> " MACSTR
1670                    " (reason code %u)",
1671                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1672         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1673 #endif /* CONFIG_IEEE80211W */
1674 }
1675
1676
1677 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
1678                                                  struct unprot_disassoc *e)
1679 {
1680 #ifdef CONFIG_IEEE80211W
1681         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
1682                    "dropped: " MACSTR " -> " MACSTR
1683                    " (reason code %u)",
1684                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1685         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1686 #endif /* CONFIG_IEEE80211W */
1687 }
1688
1689
1690 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1691                           union wpa_event_data *data)
1692 {
1693         struct wpa_supplicant *wpa_s = ctx;
1694         u16 reason_code = 0;
1695
1696         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
1697             event != EVENT_INTERFACE_ENABLED &&
1698             event != EVENT_INTERFACE_STATUS) {
1699                 wpa_printf(MSG_DEBUG, "Ignore event %d while interface is "
1700                            "disabled", event);
1701                 return;
1702         }
1703
1704         wpa_printf(MSG_DEBUG, "Event %d received on interface %s",
1705                    event, wpa_s->ifname);
1706
1707         switch (event) {
1708         case EVENT_AUTH:
1709                 sme_event_auth(wpa_s, data);
1710                 break;
1711         case EVENT_ASSOC:
1712                 wpa_supplicant_event_assoc(wpa_s, data);
1713                 break;
1714         case EVENT_DISASSOC:
1715                 wpa_printf(MSG_DEBUG, "Disassociation notification");
1716                 if (data) {
1717                         wpa_printf(MSG_DEBUG, " * reason %u",
1718                                    data->disassoc_info.reason_code);
1719                         if (data->disassoc_info.addr)
1720                                 wpa_printf(MSG_DEBUG, " * address " MACSTR,
1721                                            MAC2STR(data->disassoc_info.addr));
1722                 }
1723 #ifdef CONFIG_AP
1724                 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
1725                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1726                                                data->disassoc_info.addr);
1727                         break;
1728                 }
1729 #endif /* CONFIG_AP */
1730                 if (data) {
1731                         reason_code = data->disassoc_info.reason_code;
1732                         wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
1733                                     data->disassoc_info.ie,
1734                                     data->disassoc_info.ie_len);
1735 #ifdef CONFIG_P2P
1736                         wpas_p2p_disassoc_notif(
1737                                 wpa_s, data->disassoc_info.addr, reason_code,
1738                                 data->disassoc_info.ie,
1739                                 data->disassoc_info.ie_len);
1740 #endif /* CONFIG_P2P */
1741                 }
1742                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1743                         sme_event_disassoc(wpa_s, data);
1744                 /* fall through */
1745         case EVENT_DEAUTH:
1746                 if (event == EVENT_DEAUTH) {
1747                         wpa_printf(MSG_DEBUG, "Deauthentication notification");
1748                         if (data) {
1749                                 reason_code = data->deauth_info.reason_code;
1750                                 wpa_printf(MSG_DEBUG, " * reason %u",
1751                                            data->deauth_info.reason_code);
1752                                 if (data->deauth_info.addr) {
1753                                         wpa_printf(MSG_DEBUG, " * address "
1754                                                    MACSTR,
1755                                                    MAC2STR(data->deauth_info.
1756                                                            addr));
1757                                 }
1758                                 wpa_hexdump(MSG_DEBUG,
1759                                             "Deauthentication frame IE(s)",
1760                                             data->deauth_info.ie,
1761                                             data->deauth_info.ie_len);
1762 #ifdef CONFIG_P2P
1763                                 wpas_p2p_deauth_notif(
1764                                         wpa_s, data->deauth_info.addr,
1765                                         reason_code,
1766                                         data->deauth_info.ie,
1767                                         data->deauth_info.ie_len);
1768 #endif /* CONFIG_P2P */
1769                         }
1770                 }
1771 #ifdef CONFIG_AP
1772                 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
1773                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1774                                                data->deauth_info.addr);
1775                         break;
1776                 }
1777 #endif /* CONFIG_AP */
1778                 wpa_supplicant_event_disassoc(wpa_s, reason_code);
1779                 break;
1780         case EVENT_MICHAEL_MIC_FAILURE:
1781                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
1782                 break;
1783 #ifndef CONFIG_NO_SCAN_PROCESSING
1784         case EVENT_SCAN_RESULTS:
1785                 wpa_supplicant_event_scan_results(wpa_s, data);
1786                 break;
1787 #endif /* CONFIG_NO_SCAN_PROCESSING */
1788         case EVENT_ASSOCINFO:
1789                 wpa_supplicant_event_associnfo(wpa_s, data);
1790                 break;
1791         case EVENT_INTERFACE_STATUS:
1792                 wpa_supplicant_event_interface_status(wpa_s, data);
1793                 break;
1794         case EVENT_PMKID_CANDIDATE:
1795                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
1796                 break;
1797 #ifdef CONFIG_PEERKEY
1798         case EVENT_STKSTART:
1799                 wpa_supplicant_event_stkstart(wpa_s, data);
1800                 break;
1801 #endif /* CONFIG_PEERKEY */
1802 #ifdef CONFIG_IEEE80211R
1803         case EVENT_FT_RESPONSE:
1804                 wpa_supplicant_event_ft_response(wpa_s, data);
1805                 break;
1806 #endif /* CONFIG_IEEE80211R */
1807 #ifdef CONFIG_IBSS_RSN
1808         case EVENT_IBSS_RSN_START:
1809                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
1810                 break;
1811 #endif /* CONFIG_IBSS_RSN */
1812         case EVENT_ASSOC_REJECT:
1813                 if (data->assoc_reject.bssid)
1814                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
1815                                 "bssid=" MACSTR " status_code=%u",
1816                                 MAC2STR(data->assoc_reject.bssid),
1817                                 data->assoc_reject.status_code);
1818                 else
1819                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
1820                                 "status_code=%u",
1821                                 data->assoc_reject.status_code);
1822                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1823                         sme_event_assoc_reject(wpa_s, data);
1824                 break;
1825         case EVENT_AUTH_TIMED_OUT:
1826                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1827                         sme_event_auth_timed_out(wpa_s, data);
1828                 break;
1829         case EVENT_ASSOC_TIMED_OUT:
1830                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1831                         sme_event_assoc_timed_out(wpa_s, data);
1832                 break;
1833 #ifdef CONFIG_AP
1834         case EVENT_TX_STATUS:
1835                 wpa_printf(MSG_DEBUG, "EVENT_TX_STATUS on %s dst=" MACSTR
1836                            " type=%d stype=%d",
1837                            wpa_s->ifname, MAC2STR(data->tx_status.dst),
1838                            data->tx_status.type, data->tx_status.stype);
1839                 if (wpa_s->ap_iface == NULL) {
1840 #ifdef CONFIG_P2P
1841                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1842                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
1843                                 wpas_send_action_tx_status(
1844                                         wpa_s, data->tx_status.dst,
1845                                         data->tx_status.data,
1846                                         data->tx_status.data_len,
1847                                         data->tx_status.ack ?
1848                                         P2P_SEND_ACTION_SUCCESS :
1849                                         P2P_SEND_ACTION_NO_ACK);
1850 #endif /* CONFIG_P2P */
1851                         break;
1852                 }
1853 #ifdef CONFIG_P2P
1854                 wpa_printf(MSG_DEBUG, "EVENT_TX_STATUS pending_dst=" MACSTR,
1855                            MAC2STR(wpa_s->parent->pending_action_dst));
1856                 /*
1857                  * Catch TX status events for Action frames we sent via group
1858                  * interface in GO mode.
1859                  */
1860                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1861                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
1862                     os_memcmp(wpa_s->parent->pending_action_dst,
1863                               data->tx_status.dst, ETH_ALEN) == 0) {
1864                         wpas_send_action_tx_status(
1865                                 wpa_s->parent, data->tx_status.dst,
1866                                 data->tx_status.data,
1867                                 data->tx_status.data_len,
1868                                 data->tx_status.ack ?
1869                                 P2P_SEND_ACTION_SUCCESS :
1870                                 P2P_SEND_ACTION_NO_ACK);
1871                         break;
1872                 }
1873 #endif /* CONFIG_P2P */
1874                 switch (data->tx_status.type) {
1875                 case WLAN_FC_TYPE_MGMT:
1876                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
1877                                       data->tx_status.data_len,
1878                                       data->tx_status.stype,
1879                                       data->tx_status.ack);
1880                         break;
1881                 case WLAN_FC_TYPE_DATA:
1882                         ap_tx_status(wpa_s, data->tx_status.dst,
1883                                      data->tx_status.data,
1884                                      data->tx_status.data_len,
1885                                      data->tx_status.ack);
1886                         break;
1887                 }
1888                 break;
1889         case EVENT_RX_FROM_UNKNOWN:
1890                 if (wpa_s->ap_iface == NULL)
1891                         break;
1892                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame,
1893                                        data->rx_from_unknown.len);
1894                 break;
1895         case EVENT_RX_MGMT:
1896                 if (wpa_s->ap_iface == NULL) {
1897 #ifdef CONFIG_P2P
1898                         u16 fc, stype;
1899                         const struct ieee80211_mgmt *mgmt;
1900                         mgmt = (const struct ieee80211_mgmt *)
1901                                 data->rx_mgmt.frame;
1902                         fc = le_to_host16(mgmt->frame_control);
1903                         stype = WLAN_FC_GET_STYPE(fc);
1904                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
1905                             data->rx_mgmt.frame_len > 24) {
1906                                 const u8 *src = mgmt->sa;
1907                                 const u8 *ie = mgmt->u.probe_req.variable;
1908                                 size_t ie_len = data->rx_mgmt.frame_len -
1909                                         (mgmt->u.probe_req.variable -
1910                                          data->rx_mgmt.frame);
1911                                 wpas_p2p_probe_req_rx(wpa_s, src, ie, ie_len);
1912                                 break;
1913                         }
1914 #endif /* CONFIG_P2P */
1915                         wpa_printf(MSG_DEBUG, "AP: ignore received management "
1916                                    "frame in non-AP mode");
1917                         break;
1918                 }
1919                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
1920                 break;
1921 #endif /* CONFIG_AP */
1922         case EVENT_RX_ACTION:
1923                 wpa_printf(MSG_DEBUG, "Received Action frame: SA=" MACSTR
1924                            " Category=%u DataLen=%d freq=%d MHz",
1925                            MAC2STR(data->rx_action.sa),
1926                            data->rx_action.category, (int) data->rx_action.len,
1927                            data->rx_action.freq);
1928 #ifdef CONFIG_IEEE80211R
1929                 if (data->rx_action.category == WLAN_ACTION_FT) {
1930                         ft_rx_action(wpa_s, data->rx_action.data,
1931                                      data->rx_action.len);
1932                         break;
1933                 }
1934 #endif /* CONFIG_IEEE80211R */
1935 #ifdef CONFIG_IEEE80211W
1936 #ifdef CONFIG_SME
1937                 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
1938                         sme_sa_query_rx(wpa_s, data->rx_action.sa,
1939                                         data->rx_action.data,
1940                                         data->rx_action.len);
1941                         break;
1942                 }
1943 #endif /* CONFIG_SME */
1944 #endif /* CONFIG_IEEE80211W */
1945 #ifdef CONFIG_P2P
1946                 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
1947                                    data->rx_action.sa,
1948                                    data->rx_action.bssid,
1949                                    data->rx_action.category,
1950                                    data->rx_action.data,
1951                                    data->rx_action.len, data->rx_action.freq);
1952 #endif /* CONFIG_P2P */
1953                 break;
1954         case EVENT_RX_PROBE_REQ:
1955 #ifdef CONFIG_AP
1956                 if (wpa_s->ap_iface) {
1957                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
1958                                              data->rx_probe_req.sa,
1959                                              data->rx_probe_req.ie,
1960                                              data->rx_probe_req.ie_len);
1961                         break;
1962                 }
1963 #endif /* CONFIG_AP */
1964 #ifdef CONFIG_P2P
1965                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
1966                                       data->rx_probe_req.ie,
1967                                       data->rx_probe_req.ie_len);
1968 #endif /* CONFIG_P2P */
1969                 break;
1970 #ifdef CONFIG_P2P
1971         case EVENT_REMAIN_ON_CHANNEL:
1972                 wpas_p2p_remain_on_channel_cb(
1973                         wpa_s, data->remain_on_channel.freq,
1974                         data->remain_on_channel.duration);
1975                 break;
1976         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
1977                 wpas_p2p_cancel_remain_on_channel_cb(
1978                         wpa_s, data->remain_on_channel.freq);
1979                 break;
1980         case EVENT_P2P_DEV_FOUND:
1981                 wpas_dev_found(wpa_s, data->p2p_dev_found.addr,
1982                                data->p2p_dev_found.dev_addr,
1983                                data->p2p_dev_found.pri_dev_type,
1984                                data->p2p_dev_found.dev_name,
1985                                data->p2p_dev_found.config_methods,
1986                                data->p2p_dev_found.dev_capab,
1987                                data->p2p_dev_found.group_capab);
1988                 break;
1989         case EVENT_P2P_GO_NEG_REQ_RX:
1990                 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
1991                                    data->p2p_go_neg_req_rx.dev_passwd_id);
1992                 break;
1993         case EVENT_P2P_GO_NEG_COMPLETED:
1994                 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
1995                 break;
1996         case EVENT_P2P_PROV_DISC_REQUEST:
1997                 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
1998                                    data->p2p_prov_disc_req.config_methods,
1999                                    data->p2p_prov_disc_req.dev_addr,
2000                                    data->p2p_prov_disc_req.pri_dev_type,
2001                                    data->p2p_prov_disc_req.dev_name,
2002                                    data->p2p_prov_disc_req.supp_config_methods,
2003                                    data->p2p_prov_disc_req.dev_capab,
2004                                    data->p2p_prov_disc_req.group_capab);
2005                 break;
2006         case EVENT_P2P_PROV_DISC_RESPONSE:
2007                 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2008                                     data->p2p_prov_disc_resp.config_methods);
2009                 break;
2010         case EVENT_P2P_SD_REQUEST:
2011                 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2012                                 data->p2p_sd_req.sa,
2013                                 data->p2p_sd_req.dialog_token,
2014                                 data->p2p_sd_req.update_indic,
2015                                 data->p2p_sd_req.tlvs,
2016                                 data->p2p_sd_req.tlvs_len);
2017                 break;
2018         case EVENT_P2P_SD_RESPONSE:
2019                 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2020                                  data->p2p_sd_resp.update_indic,
2021                                  data->p2p_sd_resp.tlvs,
2022                                  data->p2p_sd_resp.tlvs_len);
2023                 break;
2024 #endif /* CONFIG_P2P */
2025 #ifdef CONFIG_CLIENT_MLME
2026         case EVENT_MLME_RX: {
2027                 struct ieee80211_rx_status rx_status;
2028                 os_memset(&rx_status, 0, sizeof(rx_status));
2029                 rx_status.freq = data->mlme_rx.freq;
2030                 rx_status.channel = data->mlme_rx.channel;
2031                 rx_status.ssi = data->mlme_rx.ssi;
2032                 ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len,
2033                                  &rx_status);
2034                 break;
2035         }
2036 #endif /* CONFIG_CLIENT_MLME */
2037         case EVENT_EAPOL_RX:
2038                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2039                                         data->eapol_rx.data,
2040                                         data->eapol_rx.data_len);
2041                 break;
2042         case EVENT_SIGNAL_CHANGE:
2043                 bgscan_notify_signal_change(
2044                         wpa_s, data->signal_change.above_threshold,
2045                         data->signal_change.current_signal,
2046                         data->signal_change.current_noise,
2047                         data->signal_change.current_txrate);
2048                 break;
2049         case EVENT_INTERFACE_ENABLED:
2050                 wpa_printf(MSG_DEBUG, "Interface was enabled");
2051                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2052 #ifdef CONFIG_AP
2053                         if (!wpa_s->ap_iface) {
2054                                 wpa_supplicant_set_state(wpa_s,
2055                                                          WPA_DISCONNECTED);
2056                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2057                         } else
2058                                 wpa_supplicant_set_state(wpa_s,
2059                                                          WPA_COMPLETED);
2060 #else /* CONFIG_AP */
2061                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2062                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2063 #endif /* CONFIG_AP */
2064                 }
2065                 break;
2066         case EVENT_INTERFACE_DISABLED:
2067                 wpa_printf(MSG_DEBUG, "Interface was disabled");
2068                 wpa_supplicant_mark_disassoc(wpa_s);
2069                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2070                 break;
2071         case EVENT_CHANNEL_LIST_CHANGED:
2072                 if (wpa_s->drv_priv == NULL)
2073                         break; /* Ignore event during drv initialization */
2074 #ifdef CONFIG_P2P
2075                 wpas_p2p_update_channel_list(wpa_s);
2076 #endif /* CONFIG_P2P */
2077                 break;
2078         case EVENT_INTERFACE_UNAVAILABLE:
2079 #ifdef CONFIG_P2P
2080                 wpas_p2p_interface_unavailable(wpa_s);
2081 #endif /* CONFIG_P2P */
2082                 break;
2083         case EVENT_BEST_CHANNEL:
2084                 wpa_printf(MSG_DEBUG, "Best channel event received (%d %d %d)",
2085                            data->best_chan.freq_24, data->best_chan.freq_5,
2086                            data->best_chan.freq_overall);
2087                 wpa_s->best_24_freq = data->best_chan.freq_24;
2088                 wpa_s->best_5_freq = data->best_chan.freq_5;
2089                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2090 #ifdef CONFIG_P2P
2091                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2092                                               data->best_chan.freq_5,
2093                                               data->best_chan.freq_overall);
2094 #endif /* CONFIG_P2P */
2095                 break;
2096         case EVENT_UNPROT_DEAUTH:
2097                 wpa_supplicant_event_unprot_deauth(wpa_s,
2098                                                    &data->unprot_deauth);
2099                 break;
2100         case EVENT_UNPROT_DISASSOC:
2101                 wpa_supplicant_event_unprot_disassoc(wpa_s,
2102                                                      &data->unprot_disassoc);
2103                 break;
2104         case EVENT_STATION_LOW_ACK:
2105 #ifdef CONFIG_AP
2106                 if (wpa_s->ap_iface && data)
2107                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2108                                                   data->low_ack.addr);
2109 #endif /* CONFIG_AP */
2110                 break;
2111         default:
2112                 wpa_printf(MSG_INFO, "Unknown event %d", event);
2113                 break;
2114         }
2115 }