contrib/wpa/src/ap/sta_info.c

   1 /*
   2  * hostapd / Station table
   3  * Copyright (c) 2002-2017, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "utils/eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/wpa_ctrl.h"
  15 #include "common/sae.h"
  16 #include "common/dpp.h"
  17 #include "radius/radius.h"
  18 #include "radius/radius_client.h"
  19 #include "p2p/p2p.h"
  20 #include "fst/fst.h"
  21 #include "crypto/crypto.h"
  22 #include "hostapd.h"
  23 #include "accounting.h"
  24 #include "ieee802_1x.h"
  25 #include "ieee802_11.h"
  26 #include "ieee802_11_auth.h"
  27 #include "wpa_auth.h"
  28 #include "preauth_auth.h"
  29 #include "ap_config.h"
  30 #include "beacon.h"
  31 #include "ap_mlme.h"
  32 #include "vlan_init.h"
  33 #include "p2p_hostapd.h"
  34 #include "ap_drv_ops.h"
  35 #include "gas_serv.h"
  36 #include "wnm_ap.h"
  37 #include "mbo_ap.h"
  38 #include "ndisc_snoop.h"
  39 #include "sta_info.h"
  40 #include "vlan.h"
  41 #include "wps_hostapd.h"
  42
  43 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
  44                                        struct sta_info *sta);
  45 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx);
  46 static void ap_handle_session_warning_timer(void *eloop_ctx, void *timeout_ctx);
  47 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx);
  48 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx);
  49 #ifdef CONFIG_IEEE80211W
  50 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx);
  51 #endif /* CONFIG_IEEE80211W */
  52 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta);
  53 static void ap_sta_delayed_1x_auth_fail_cb(void *eloop_ctx, void *timeout_ctx);
  54
  55 int ap_for_each_sta(struct hostapd_data *hapd,
  56                     int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
  57                               void *ctx),
  58                     void *ctx)
  59 {
  60         struct sta_info *sta;
  61
  62         for (sta = hapd->sta_list; sta; sta = sta->next) {
  63                 if (cb(hapd, sta, ctx))
  64                         return 1;
  65         }
  66
  67         return 0;
  68 }
  69
  70
  71 struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta)
  72 {
  73         struct sta_info *s;
  74
  75         s = hapd->sta_hash[STA_HASH(sta)];
  76         while (s != NULL && os_memcmp(s->addr, sta, 6) != 0)
  77                 s = s->hnext;
  78         return s;
  79 }
  80
  81
  82 #ifdef CONFIG_P2P
  83 struct sta_info * ap_get_sta_p2p(struct hostapd_data *hapd, const u8 *addr)
  84 {
  85         struct sta_info *sta;
  86
  87         for (sta = hapd->sta_list; sta; sta = sta->next) {
  88                 const u8 *p2p_dev_addr;
  89
  90                 if (sta->p2p_ie == NULL)
  91                         continue;
  92
  93                 p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie);
  94                 if (p2p_dev_addr == NULL)
  95                         continue;
  96
  97                 if (os_memcmp(p2p_dev_addr, addr, ETH_ALEN) == 0)
  98                         return sta;
  99         }
 100
 101         return NULL;
 102 }
 103 #endif /* CONFIG_P2P */
 104
 105
 106 static void ap_sta_list_del(struct hostapd_data *hapd, struct sta_info *sta)
 107 {
 108         struct sta_info *tmp;
 109
 110         if (hapd->sta_list == sta) {
 111                 hapd->sta_list = sta->next;
 112                 return;
 113         }
 114
 115         tmp = hapd->sta_list;
 116         while (tmp != NULL && tmp->next != sta)
 117                 tmp = tmp->next;
 118         if (tmp == NULL) {
 119                 wpa_printf(MSG_DEBUG, "Could not remove STA " MACSTR " from "
 120                            "list.", MAC2STR(sta->addr));
 121         } else
 122                 tmp->next = sta->next;
 123 }
 124
 125
 126 void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta)
 127 {
 128         sta->hnext = hapd->sta_hash[STA_HASH(sta->addr)];
 129         hapd->sta_hash[STA_HASH(sta->addr)] = sta;
 130 }
 131
 132
 133 static void ap_sta_hash_del(struct hostapd_data *hapd, struct sta_info *sta)
 134 {
 135         struct sta_info *s;
 136
 137         s = hapd->sta_hash[STA_HASH(sta->addr)];
 138         if (s == NULL) return;
 139         if (os_memcmp(s->addr, sta->addr, 6) == 0) {
 140                 hapd->sta_hash[STA_HASH(sta->addr)] = s->hnext;
 141                 return;
 142         }
 143
 144         while (s->hnext != NULL &&
 145                os_memcmp(s->hnext->addr, sta->addr, ETH_ALEN) != 0)
 146                 s = s->hnext;
 147         if (s->hnext != NULL)
 148                 s->hnext = s->hnext->hnext;
 149         else
 150                 wpa_printf(MSG_DEBUG, "AP: could not remove STA " MACSTR
 151                            " from hash table", MAC2STR(sta->addr));
 152 }
 153
 154
 155 void ap_sta_ip6addr_del(struct hostapd_data *hapd, struct sta_info *sta)
 156 {
 157         sta_ip6addr_del(hapd, sta);
 158 }
 159
 160
 161 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
 162 {
 163         int set_beacon = 0;
 164
 165         accounting_sta_stop(hapd, sta);
 166
 167         /* just in case */
 168         ap_sta_set_authorized(hapd, sta, 0);
 169
 170         if (sta->flags & (WLAN_STA_WDS | WLAN_STA_MULTI_AP))
 171                 hostapd_set_wds_sta(hapd, NULL, sta->addr, sta->aid, 0);
 172
 173         if (sta->ipaddr)
 174                 hostapd_drv_br_delete_ip_neigh(hapd, 4, (u8 *) &sta->ipaddr);
 175         ap_sta_ip6addr_del(hapd, sta);
 176
 177         if (!hapd->iface->driver_ap_teardown &&
 178             !(sta->flags & WLAN_STA_PREAUTH)) {
 179                 hostapd_drv_sta_remove(hapd, sta->addr);
 180                 sta->added_unassoc = 0;
 181         }
 182
 183         ap_sta_hash_del(hapd, sta);
 184         ap_sta_list_del(hapd, sta);
 185
 186         if (sta->aid > 0)
 187                 hapd->sta_aid[(sta->aid - 1) / 32] &=
 188                         ~BIT((sta->aid - 1) % 32);
 189
 190         hapd->num_sta--;
 191         if (sta->nonerp_set) {
 192                 sta->nonerp_set = 0;
 193                 hapd->iface->num_sta_non_erp--;
 194                 if (hapd->iface->num_sta_non_erp == 0)
 195                         set_beacon++;
 196         }
 197
 198         if (sta->no_short_slot_time_set) {
 199                 sta->no_short_slot_time_set = 0;
 200                 hapd->iface->num_sta_no_short_slot_time--;
 201                 if (hapd->iface->current_mode &&
 202                     hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 203                     && hapd->iface->num_sta_no_short_slot_time == 0)
 204                         set_beacon++;
 205         }
 206
 207         if (sta->no_short_preamble_set) {
 208                 sta->no_short_preamble_set = 0;
 209                 hapd->iface->num_sta_no_short_preamble--;
 210                 if (hapd->iface->current_mode &&
 211                     hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 212                     && hapd->iface->num_sta_no_short_preamble == 0)
 213                         set_beacon++;
 214         }
 215
 216         if (sta->no_ht_gf_set) {
 217                 sta->no_ht_gf_set = 0;
 218                 hapd->iface->num_sta_ht_no_gf--;
 219         }
 220
 221         if (sta->no_ht_set) {
 222                 sta->no_ht_set = 0;
 223                 hapd->iface->num_sta_no_ht--;
 224         }
 225
 226         if (sta->ht_20mhz_set) {
 227                 sta->ht_20mhz_set = 0;
 228                 hapd->iface->num_sta_ht_20mhz--;
 229         }
 230
 231 #ifdef CONFIG_TAXONOMY
 232         wpabuf_free(sta->probe_ie_taxonomy);
 233         sta->probe_ie_taxonomy = NULL;
 234         wpabuf_free(sta->assoc_ie_taxonomy);
 235         sta->assoc_ie_taxonomy = NULL;
 236 #endif /* CONFIG_TAXONOMY */
 237
 238 #ifdef CONFIG_IEEE80211N
 239         ht40_intolerant_remove(hapd->iface, sta);
 240 #endif /* CONFIG_IEEE80211N */
 241
 242 #ifdef CONFIG_P2P
 243         if (sta->no_p2p_set) {
 244                 sta->no_p2p_set = 0;
 245                 hapd->num_sta_no_p2p--;
 246                 if (hapd->num_sta_no_p2p == 0)
 247                         hostapd_p2p_non_p2p_sta_disconnected(hapd);
 248         }
 249 #endif /* CONFIG_P2P */
 250
 251 #if defined(NEED_AP_MLME) && defined(CONFIG_IEEE80211N)
 252         if (hostapd_ht_operation_update(hapd->iface) > 0)
 253                 set_beacon++;
 254 #endif /* NEED_AP_MLME && CONFIG_IEEE80211N */
 255
 256 #ifdef CONFIG_MESH
 257         if (hapd->mesh_sta_free_cb)
 258                 hapd->mesh_sta_free_cb(hapd, sta);
 259 #endif /* CONFIG_MESH */
 260
 261         if (set_beacon)
 262                 ieee802_11_set_beacons(hapd->iface);
 263
 264         wpa_printf(MSG_DEBUG, "%s: cancel ap_handle_timer for " MACSTR,
 265                    __func__, MAC2STR(sta->addr));
 266         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 267         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 268         eloop_cancel_timeout(ap_handle_session_warning_timer, hapd, sta);
 269         ap_sta_clear_disconnect_timeouts(hapd, sta);
 270         sae_clear_retransmit_timer(hapd, sta);
 271
 272         ieee802_1x_free_station(hapd, sta);
 273         wpa_auth_sta_deinit(sta->wpa_sm);
 274         rsn_preauth_free_station(hapd, sta);
 275 #ifndef CONFIG_NO_RADIUS
 276         if (hapd->radius)
 277                 radius_client_flush_auth(hapd->radius, sta->addr);
 278 #endif /* CONFIG_NO_RADIUS */
 279
 280 #ifndef CONFIG_NO_VLAN
 281         /*
 282          * sta->wpa_sm->group needs to be released before so that
 283          * vlan_remove_dynamic() can check that no stations are left on the
 284          * AP_VLAN netdev.
 285          */
 286         if (sta->vlan_id)
 287                 vlan_remove_dynamic(hapd, sta->vlan_id);
 288         if (sta->vlan_id_bound) {
 289                 /*
 290                  * Need to remove the STA entry before potentially removing the
 291                  * VLAN.
 292                  */
 293                 if (hapd->iface->driver_ap_teardown &&
 294                     !(sta->flags & WLAN_STA_PREAUTH)) {
 295                         hostapd_drv_sta_remove(hapd, sta->addr);
 296                         sta->added_unassoc = 0;
 297                 }
 298                 vlan_remove_dynamic(hapd, sta->vlan_id_bound);
 299         }
 300 #endif /* CONFIG_NO_VLAN */
 301
 302         os_free(sta->challenge);
 303
 304 #ifdef CONFIG_IEEE80211W
 305         os_free(sta->sa_query_trans_id);
 306         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 307 #endif /* CONFIG_IEEE80211W */
 308
 309 #ifdef CONFIG_P2P
 310         p2p_group_notif_disassoc(hapd->p2p_group, sta->addr);
 311 #endif /* CONFIG_P2P */
 312
 313 #ifdef CONFIG_INTERWORKING
 314         if (sta->gas_dialog) {
 315                 int i;
 316                 for (i = 0; i < GAS_DIALOG_MAX; i++)
 317                         gas_serv_dialog_clear(&sta->gas_dialog[i]);
 318                 os_free(sta->gas_dialog);
 319         }
 320 #endif /* CONFIG_INTERWORKING */
 321
 322         wpabuf_free(sta->wps_ie);
 323         wpabuf_free(sta->p2p_ie);
 324         wpabuf_free(sta->hs20_ie);
 325         wpabuf_free(sta->roaming_consortium);
 326 #ifdef CONFIG_FST
 327         wpabuf_free(sta->mb_ies);
 328 #endif /* CONFIG_FST */
 329
 330         os_free(sta->ht_capabilities);
 331         os_free(sta->vht_capabilities);
 332         os_free(sta->vht_operation);
 333         os_free(sta->he_capab);
 334         hostapd_free_psk_list(sta->psk);
 335         os_free(sta->identity);
 336         os_free(sta->radius_cui);
 337         os_free(sta->remediation_url);
 338         os_free(sta->t_c_url);
 339         wpabuf_free(sta->hs20_deauth_req);
 340         os_free(sta->hs20_session_info_url);
 341
 342 #ifdef CONFIG_SAE
 343         sae_clear_data(sta->sae);
 344         os_free(sta->sae);
 345 #endif /* CONFIG_SAE */
 346
 347         mbo_ap_sta_free(sta);
 348         os_free(sta->supp_op_classes);
 349
 350 #ifdef CONFIG_FILS
 351         os_free(sta->fils_pending_assoc_req);
 352         wpabuf_free(sta->fils_hlp_resp);
 353         wpabuf_free(sta->hlp_dhcp_discover);
 354         eloop_cancel_timeout(fils_hlp_timeout, hapd, sta);
 355 #ifdef CONFIG_FILS_SK_PFS
 356         crypto_ecdh_deinit(sta->fils_ecdh);
 357         wpabuf_clear_free(sta->fils_dh_ss);
 358         wpabuf_free(sta->fils_g_sta);
 359 #endif /* CONFIG_FILS_SK_PFS */
 360 #endif /* CONFIG_FILS */
 361
 362 #ifdef CONFIG_OWE
 363         bin_clear_free(sta->owe_pmk, sta->owe_pmk_len);
 364         crypto_ecdh_deinit(sta->owe_ecdh);
 365 #endif /* CONFIG_OWE */
 366
 367 #ifdef CONFIG_DPP2
 368         dpp_pfs_free(sta->dpp_pfs);
 369         sta->dpp_pfs = NULL;
 370 #endif /* CONFIG_DPP2 */
 371
 372         os_free(sta->ext_capability);
 373
 374 #ifdef CONFIG_WNM_AP
 375         eloop_cancel_timeout(ap_sta_reset_steer_flag_timer, hapd, sta);
 376 #endif /* CONFIG_WNM_AP */
 377
 378         os_free(sta->ifname_wds);
 379
 380         os_free(sta);
 381 }
 382
 383
 384 void hostapd_free_stas(struct hostapd_data *hapd)
 385 {
 386         struct sta_info *sta, *prev;
 387
 388         sta = hapd->sta_list;
 389
 390         while (sta) {
 391                 prev = sta;
 392                 if (sta->flags & WLAN_STA_AUTH) {
 393                         mlme_deauthenticate_indication(
 394                                 hapd, sta, WLAN_REASON_UNSPECIFIED);
 395                 }
 396                 sta = sta->next;
 397                 wpa_printf(MSG_DEBUG, "Removing station " MACSTR,
 398                            MAC2STR(prev->addr));
 399                 ap_free_sta(hapd, prev);
 400         }
 401 }
 402
 403
 404 /**
 405  * ap_handle_timer - Per STA timer handler
 406  * @eloop_ctx: struct hostapd_data *
 407  * @timeout_ctx: struct sta_info *
 408  *
 409  * This function is called to check station activity and to remove inactive
 410  * stations.
 411  */
 412 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 413 {
 414         struct hostapd_data *hapd = eloop_ctx;
 415         struct sta_info *sta = timeout_ctx;
 416         unsigned long next_time = 0;
 417         int reason;
 418
 419         wpa_printf(MSG_DEBUG, "%s: %s: " MACSTR " flags=0x%x timeout_next=%d",
 420                    hapd->conf->iface, __func__, MAC2STR(sta->addr), sta->flags,
 421                    sta->timeout_next);
 422         if (sta->timeout_next == STA_REMOVE) {
 423                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 424                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 425                                "local deauth request");
 426                 ap_free_sta(hapd, sta);
 427                 return;
 428         }
 429
 430         if ((sta->flags & WLAN_STA_ASSOC) &&
 431             (sta->timeout_next == STA_NULLFUNC ||
 432              sta->timeout_next == STA_DISASSOC)) {
 433                 int inactive_sec;
 434                 /*
 435                  * Add random value to timeout so that we don't end up bouncing
 436                  * all stations at the same time if we have lots of associated
 437                  * stations that are idle (but keep re-associating).
 438                  */
 439                 int fuzz = os_random() % 20;
 440                 inactive_sec = hostapd_drv_get_inact_sec(hapd, sta->addr);
 441                 if (inactive_sec == -1) {
 442                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 443                                 "Check inactivity: Could not "
 444                                 "get station info from kernel driver for "
 445                                 MACSTR, MAC2STR(sta->addr));
 446                         /*
 447                          * The driver may not support this functionality.
 448                          * Anyway, try again after the next inactivity timeout,
 449                          * but do not disconnect the station now.
 450                          */
 451                         next_time = hapd->conf->ap_max_inactivity + fuzz;
 452                 } else if (inactive_sec == -ENOENT) {
 453                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 454                                 "Station " MACSTR " has lost its driver entry",
 455                                 MAC2STR(sta->addr));
 456
 457                         /* Avoid sending client probe on removed client */
 458                         sta->timeout_next = STA_DISASSOC;
 459                         goto skip_poll;
 460                 } else if (inactive_sec < hapd->conf->ap_max_inactivity) {
 461                         /* station activity detected; reset timeout state */
 462                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 463                                 "Station " MACSTR " has been active %is ago",
 464                                 MAC2STR(sta->addr), inactive_sec);
 465                         sta->timeout_next = STA_NULLFUNC;
 466                         next_time = hapd->conf->ap_max_inactivity + fuzz -
 467                                 inactive_sec;
 468                 } else {
 469                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 470                                 "Station " MACSTR " has been "
 471                                 "inactive too long: %d sec, max allowed: %d",
 472                                 MAC2STR(sta->addr), inactive_sec,
 473                                 hapd->conf->ap_max_inactivity);
 474
 475                         if (hapd->conf->skip_inactivity_poll)
 476                                 sta->timeout_next = STA_DISASSOC;
 477                 }
 478         }
 479
 480         if ((sta->flags & WLAN_STA_ASSOC) &&
 481             sta->timeout_next == STA_DISASSOC &&
 482             !(sta->flags & WLAN_STA_PENDING_POLL) &&
 483             !hapd->conf->skip_inactivity_poll) {
 484                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR
 485                         " has ACKed data poll", MAC2STR(sta->addr));
 486                 /* data nullfunc frame poll did not produce TX errors; assume
 487                  * station ACKed it */
 488                 sta->timeout_next = STA_NULLFUNC;
 489                 next_time = hapd->conf->ap_max_inactivity;
 490         }
 491
 492 skip_poll:
 493         if (next_time) {
 494                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 495                            "for " MACSTR " (%lu seconds)",
 496                            __func__, MAC2STR(sta->addr), next_time);
 497                 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
 498                                        sta);
 499                 return;
 500         }
 501
 502         if (sta->timeout_next == STA_NULLFUNC &&
 503             (sta->flags & WLAN_STA_ASSOC)) {
 504                 wpa_printf(MSG_DEBUG, "  Polling STA");
 505                 sta->flags |= WLAN_STA_PENDING_POLL;
 506                 hostapd_drv_poll_client(hapd, hapd->own_addr, sta->addr,
 507                                         sta->flags & WLAN_STA_WMM);
 508         } else if (sta->timeout_next != STA_REMOVE) {
 509                 int deauth = sta->timeout_next == STA_DEAUTH;
 510
 511                 if (!deauth && !(sta->flags & WLAN_STA_ASSOC)) {
 512                         /* Cannot disassociate not-associated STA, so move
 513                          * directly to deauthentication. */
 514                         sta->timeout_next = STA_DEAUTH;
 515                         deauth = 1;
 516                 }
 517
 518                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 519                         "Timeout, sending %s info to STA " MACSTR,
 520                         deauth ? "deauthentication" : "disassociation",
 521                         MAC2STR(sta->addr));
 522
 523                 if (deauth) {
 524                         hostapd_drv_sta_deauth(
 525                                 hapd, sta->addr,
 526                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
 527                 } else {
 528                         reason = (sta->timeout_next == STA_DISASSOC) ?
 529                                 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY :
 530                                 WLAN_REASON_PREV_AUTH_NOT_VALID;
 531
 532                         hostapd_drv_sta_disassoc(hapd, sta->addr, reason);
 533                 }
 534         }
 535
 536         switch (sta->timeout_next) {
 537         case STA_NULLFUNC:
 538                 sta->timeout_next = STA_DISASSOC;
 539                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 540                            "for " MACSTR " (%d seconds - AP_DISASSOC_DELAY)",
 541                            __func__, MAC2STR(sta->addr), AP_DISASSOC_DELAY);
 542                 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
 543                                        hapd, sta);
 544                 break;
 545         case STA_DISASSOC:
 546         case STA_DISASSOC_FROM_CLI:
 547                 ap_sta_set_authorized(hapd, sta, 0);
 548                 sta->flags &= ~WLAN_STA_ASSOC;
 549                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 550                 if (!sta->acct_terminate_cause)
 551                         sta->acct_terminate_cause =
 552                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 553                 accounting_sta_stop(hapd, sta);
 554                 ieee802_1x_free_station(hapd, sta);
 555                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 556                                HOSTAPD_LEVEL_INFO, "disassociated due to "
 557                                "inactivity");
 558                 reason = (sta->timeout_next == STA_DISASSOC) ?
 559                         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY :
 560                         WLAN_REASON_PREV_AUTH_NOT_VALID;
 561                 sta->timeout_next = STA_DEAUTH;
 562                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 563                            "for " MACSTR " (%d seconds - AP_DEAUTH_DELAY)",
 564                            __func__, MAC2STR(sta->addr), AP_DEAUTH_DELAY);
 565                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
 566                                        hapd, sta);
 567                 mlme_disassociate_indication(hapd, sta, reason);
 568                 break;
 569         case STA_DEAUTH:
 570         case STA_REMOVE:
 571                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 572                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 573                                "inactivity (timer DEAUTH/REMOVE)");
 574                 if (!sta->acct_terminate_cause)
 575                         sta->acct_terminate_cause =
 576                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 577                 mlme_deauthenticate_indication(
 578                         hapd, sta,
 579                         WLAN_REASON_PREV_AUTH_NOT_VALID);
 580                 ap_free_sta(hapd, sta);
 581                 break;
 582         }
 583 }
 584
 585
 586 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx)
 587 {
 588         struct hostapd_data *hapd = eloop_ctx;
 589         struct sta_info *sta = timeout_ctx;
 590
 591         wpa_printf(MSG_DEBUG, "%s: Session timer for STA " MACSTR,
 592                    hapd->conf->iface, MAC2STR(sta->addr));
 593         if (!(sta->flags & WLAN_STA_AUTH)) {
 594                 if (sta->flags & WLAN_STA_GAS) {
 595                         wpa_printf(MSG_DEBUG, "GAS: Remove temporary STA "
 596                                    "entry " MACSTR, MAC2STR(sta->addr));
 597                         ap_free_sta(hapd, sta);
 598                 }
 599                 return;
 600         }
 601
 602         hostapd_drv_sta_deauth(hapd, sta->addr,
 603                                WLAN_REASON_PREV_AUTH_NOT_VALID);
 604         mlme_deauthenticate_indication(hapd, sta,
 605                                        WLAN_REASON_PREV_AUTH_NOT_VALID);
 606         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 607                        HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 608                        "session timeout");
 609         sta->acct_terminate_cause =
 610                 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT;
 611         ap_free_sta(hapd, sta);
 612 }
 613
 614
 615 void ap_sta_replenish_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 616                               u32 session_timeout)
 617 {
 618         if (eloop_replenish_timeout(session_timeout, 0,
 619                                     ap_handle_session_timer, hapd, sta) == 1) {
 620                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 621                                HOSTAPD_LEVEL_DEBUG, "setting session timeout "
 622                                "to %d seconds", session_timeout);
 623         }
 624 }
 625
 626
 627 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 628                             u32 session_timeout)
 629 {
 630         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 631                        HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d "
 632                        "seconds", session_timeout);
 633         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 634         eloop_register_timeout(session_timeout, 0, ap_handle_session_timer,
 635                                hapd, sta);
 636 }
 637
 638
 639 void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 640 {
 641         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 642 }
 643
 644
 645 static void ap_handle_session_warning_timer(void *eloop_ctx, void *timeout_ctx)
 646 {
 647 #ifdef CONFIG_WNM_AP
 648         struct hostapd_data *hapd = eloop_ctx;
 649         struct sta_info *sta = timeout_ctx;
 650
 651         wpa_printf(MSG_DEBUG, "%s: WNM: Session warning time reached for "
 652                    MACSTR, hapd->conf->iface, MAC2STR(sta->addr));
 653         if (sta->hs20_session_info_url == NULL)
 654                 return;
 655
 656         wnm_send_ess_disassoc_imminent(hapd, sta, sta->hs20_session_info_url,
 657                                        sta->hs20_disassoc_timer);
 658 #endif /* CONFIG_WNM_AP */
 659 }
 660
 661
 662 void ap_sta_session_warning_timeout(struct hostapd_data *hapd,
 663                                     struct sta_info *sta, int warning_time)
 664 {
 665         eloop_cancel_timeout(ap_handle_session_warning_timer, hapd, sta);
 666         eloop_register_timeout(warning_time, 0, ap_handle_session_warning_timer,
 667                                hapd, sta);
 668 }
 669
 670
 671 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr)
 672 {
 673         struct sta_info *sta;
 674         int i;
 675
 676         sta = ap_get_sta(hapd, addr);
 677         if (sta)
 678                 return sta;
 679
 680         wpa_printf(MSG_DEBUG, "  New STA");
 681         if (hapd->num_sta >= hapd->conf->max_num_sta) {
 682                 /* FIX: might try to remove some old STAs first? */
 683                 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)",
 684                            hapd->num_sta, hapd->conf->max_num_sta);
 685                 return NULL;
 686         }
 687
 688         sta = os_zalloc(sizeof(struct sta_info));
 689         if (sta == NULL) {
 690                 wpa_printf(MSG_ERROR, "malloc failed");
 691                 return NULL;
 692         }
 693         sta->acct_interim_interval = hapd->conf->acct_interim_interval;
 694         if (accounting_sta_get_id(hapd, sta) < 0) {
 695                 os_free(sta);
 696                 return NULL;
 697         }
 698
 699         for (i = 0; i < WLAN_SUPP_RATES_MAX; i++) {
 700                 if (!hapd->iface->basic_rates)
 701                         break;
 702                 if (hapd->iface->basic_rates[i] < 0)
 703                         break;
 704                 sta->supported_rates[i] = hapd->iface->basic_rates[i] / 5;
 705         }
 706         sta->supported_rates_len = i;
 707
 708         if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
 709                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 710                            "for " MACSTR " (%d seconds - ap_max_inactivity)",
 711                            __func__, MAC2STR(addr),
 712                            hapd->conf->ap_max_inactivity);
 713                 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 714                                        ap_handle_timer, hapd, sta);
 715         }
 716
 717         /* initialize STA info data */
 718         os_memcpy(sta->addr, addr, ETH_ALEN);
 719         sta->next = hapd->sta_list;
 720         hapd->sta_list = sta;
 721         hapd->num_sta++;
 722         ap_sta_hash_add(hapd, sta);
 723         ap_sta_remove_in_other_bss(hapd, sta);
 724         sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
 725         dl_list_init(&sta->ip6addr);
 726
 727 #ifdef CONFIG_TAXONOMY
 728         sta_track_claim_taxonomy_info(hapd->iface, addr,
 729                                       &sta->probe_ie_taxonomy);
 730 #endif /* CONFIG_TAXONOMY */
 731
 732         return sta;
 733 }
 734
 735
 736 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 737 {
 738         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 739
 740         if (sta->ipaddr)
 741                 hostapd_drv_br_delete_ip_neigh(hapd, 4, (u8 *) &sta->ipaddr);
 742         ap_sta_ip6addr_del(hapd, sta);
 743
 744         wpa_printf(MSG_DEBUG, "%s: Removing STA " MACSTR " from kernel driver",
 745                    hapd->conf->iface, MAC2STR(sta->addr));
 746         if (hostapd_drv_sta_remove(hapd, sta->addr) &&
 747             sta->flags & WLAN_STA_ASSOC) {
 748                 wpa_printf(MSG_DEBUG, "%s: Could not remove station " MACSTR
 749                            " from kernel driver",
 750                            hapd->conf->iface, MAC2STR(sta->addr));
 751                 return -1;
 752         }
 753         sta->added_unassoc = 0;
 754         return 0;
 755 }
 756
 757
 758 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
 759                                        struct sta_info *sta)
 760 {
 761         struct hostapd_iface *iface = hapd->iface;
 762         size_t i;
 763
 764         for (i = 0; i < iface->num_bss; i++) {
 765                 struct hostapd_data *bss = iface->bss[i];
 766                 struct sta_info *sta2;
 767                 /* bss should always be set during operation, but it may be
 768                  * NULL during reconfiguration. Assume the STA is not
 769                  * associated to another BSS in that case to avoid NULL pointer
 770                  * dereferences. */
 771                 if (bss == hapd || bss == NULL)
 772                         continue;
 773                 sta2 = ap_get_sta(bss, sta->addr);
 774                 if (!sta2)
 775                         continue;
 776
 777                 wpa_printf(MSG_DEBUG, "%s: disconnect old STA " MACSTR
 778                            " association from another BSS %s",
 779                            hapd->conf->iface, MAC2STR(sta2->addr),
 780                            bss->conf->iface);
 781                 ap_sta_disconnect(bss, sta2, sta2->addr,
 782                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
 783         }
 784 }
 785
 786
 787 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 788 {
 789         struct hostapd_data *hapd = eloop_ctx;
 790         struct sta_info *sta = timeout_ctx;
 791
 792         wpa_printf(MSG_DEBUG, "%s: Disassociation callback for STA " MACSTR,
 793                    hapd->conf->iface, MAC2STR(sta->addr));
 794         ap_sta_remove(hapd, sta);
 795         mlme_disassociate_indication(hapd, sta, sta->disassoc_reason);
 796 }
 797
 798
 799 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 800                          u16 reason)
 801 {
 802         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 803                    hapd->conf->iface, MAC2STR(sta->addr));
 804         sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
 805         if (hapd->iface->current_mode &&
 806             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211AD) {
 807                 /* Skip deauthentication in DMG/IEEE 802.11ad */
 808                 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
 809                                 WLAN_STA_ASSOC_REQ_OK);
 810                 sta->timeout_next = STA_REMOVE;
 811         } else {
 812                 sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
 813                 sta->timeout_next = STA_DEAUTH;
 814         }
 815         ap_sta_set_authorized(hapd, sta, 0);
 816         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 817                    "for " MACSTR " (%d seconds - "
 818                    "AP_MAX_INACTIVITY_AFTER_DISASSOC)",
 819                    __func__, MAC2STR(sta->addr),
 820                    AP_MAX_INACTIVITY_AFTER_DISASSOC);
 821         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 822         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 823                                ap_handle_timer, hapd, sta);
 824         accounting_sta_stop(hapd, sta);
 825         ieee802_1x_free_station(hapd, sta);
 826         wpa_auth_sta_deinit(sta->wpa_sm);
 827         sta->wpa_sm = NULL;
 828
 829         sta->disassoc_reason = reason;
 830         sta->flags |= WLAN_STA_PENDING_DISASSOC_CB;
 831         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 832         eloop_register_timeout(hapd->iface->drv_flags &
 833                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 834                                ap_sta_disassoc_cb_timeout, hapd, sta);
 835 }
 836
 837
 838 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 839 {
 840         struct hostapd_data *hapd = eloop_ctx;
 841         struct sta_info *sta = timeout_ctx;
 842
 843         wpa_printf(MSG_DEBUG, "%s: Deauthentication callback for STA " MACSTR,
 844                    hapd->conf->iface, MAC2STR(sta->addr));
 845         ap_sta_remove(hapd, sta);
 846         mlme_deauthenticate_indication(hapd, sta, sta->deauth_reason);
 847 }
 848
 849
 850 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 851                            u16 reason)
 852 {
 853         if (hapd->iface->current_mode &&
 854             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211AD) {
 855                 /* Deauthentication is not used in DMG/IEEE 802.11ad;
 856                  * disassociate the STA instead. */
 857                 ap_sta_disassociate(hapd, sta, reason);
 858                 return;
 859         }
 860
 861         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 862                    hapd->conf->iface, MAC2STR(sta->addr));
 863         sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
 864         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
 865         ap_sta_set_authorized(hapd, sta, 0);
 866         sta->timeout_next = STA_REMOVE;
 867         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 868                    "for " MACSTR " (%d seconds - "
 869                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
 870                    __func__, MAC2STR(sta->addr),
 871                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
 872         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 873         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 874                                ap_handle_timer, hapd, sta);
 875         accounting_sta_stop(hapd, sta);
 876         ieee802_1x_free_station(hapd, sta);
 877
 878         sta->deauth_reason = reason;
 879         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 880         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 881         eloop_register_timeout(hapd->iface->drv_flags &
 882                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 883                                ap_sta_deauth_cb_timeout, hapd, sta);
 884 }
 885
 886
 887 #ifdef CONFIG_WPS
 888 int ap_sta_wps_cancel(struct hostapd_data *hapd,
 889                       struct sta_info *sta, void *ctx)
 890 {
 891         if (sta && (sta->flags & WLAN_STA_WPS)) {
 892                 ap_sta_deauthenticate(hapd, sta,
 893                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 894                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 895                            __func__, MAC2STR(sta->addr));
 896                 return 1;
 897         }
 898
 899         return 0;
 900 }
 901 #endif /* CONFIG_WPS */
 902
 903
 904 static int ap_sta_get_free_vlan_id(struct hostapd_data *hapd)
 905 {
 906         struct hostapd_vlan *vlan;
 907         int vlan_id = MAX_VLAN_ID + 2;
 908
 909 retry:
 910         for (vlan = hapd->conf->vlan; vlan; vlan = vlan->next) {
 911                 if (vlan->vlan_id == vlan_id) {
 912                         vlan_id++;
 913                         goto retry;
 914                 }
 915         }
 916         return vlan_id;
 917 }
 918
 919
 920 int ap_sta_set_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 921                     struct vlan_description *vlan_desc)
 922 {
 923         struct hostapd_vlan *vlan = NULL, *wildcard_vlan = NULL;
 924         int old_vlan_id, vlan_id = 0, ret = 0;
 925
 926         /* Check if there is something to do */
 927         if (hapd->conf->ssid.per_sta_vif && !sta->vlan_id) {
 928                 /* This sta is lacking its own vif */
 929         } else if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_DISABLED &&
 930                    !hapd->conf->ssid.per_sta_vif && sta->vlan_id) {
 931                 /* sta->vlan_id needs to be reset */
 932         } else if (!vlan_compare(vlan_desc, sta->vlan_desc)) {
 933                 return 0; /* nothing to change */
 934         }
 935
 936         /* Now the real VLAN changed or the STA just needs its own vif */
 937         if (hapd->conf->ssid.per_sta_vif) {
 938                 /* Assign a new vif, always */
 939                 /* find a free vlan_id sufficiently big */
 940                 vlan_id = ap_sta_get_free_vlan_id(hapd);
 941                 /* Get wildcard VLAN */
 942                 for (vlan = hapd->conf->vlan; vlan; vlan = vlan->next) {
 943                         if (vlan->vlan_id == VLAN_ID_WILDCARD)
 944                                 break;
 945                 }
 946                 if (!vlan) {
 947                         hostapd_logger(hapd, sta->addr,
 948                                        HOSTAPD_MODULE_IEEE80211,
 949                                        HOSTAPD_LEVEL_DEBUG,
 950                                        "per_sta_vif missing wildcard");
 951                         vlan_id = 0;
 952                         ret = -1;
 953                         goto done;
 954                 }
 955         } else if (vlan_desc && vlan_desc->notempty) {
 956                 for (vlan = hapd->conf->vlan; vlan; vlan = vlan->next) {
 957                         if (!vlan_compare(&vlan->vlan_desc, vlan_desc))
 958                                 break;
 959                         if (vlan->vlan_id == VLAN_ID_WILDCARD)
 960                                 wildcard_vlan = vlan;
 961                 }
 962                 if (vlan) {
 963                         vlan_id = vlan->vlan_id;
 964                 } else if (wildcard_vlan) {
 965                         vlan = wildcard_vlan;
 966                         vlan_id = vlan_desc->untagged;
 967                         if (vlan_desc->tagged[0]) {
 968                                 /* Tagged VLAN configuration */
 969                                 vlan_id = ap_sta_get_free_vlan_id(hapd);
 970                         }
 971                 } else {
 972                         hostapd_logger(hapd, sta->addr,
 973                                        HOSTAPD_MODULE_IEEE80211,
 974                                        HOSTAPD_LEVEL_DEBUG,
 975                                        "missing vlan and wildcard for vlan=%d%s",
 976                                        vlan_desc->untagged,
 977                                        vlan_desc->tagged[0] ? "+" : "");
 978                         vlan_id = 0;
 979                         ret = -1;
 980                         goto done;
 981                 }
 982         }
 983
 984         if (vlan && vlan->vlan_id == VLAN_ID_WILDCARD) {
 985                 vlan = vlan_add_dynamic(hapd, vlan, vlan_id, vlan_desc);
 986                 if (vlan == NULL) {
 987                         hostapd_logger(hapd, sta->addr,
 988                                        HOSTAPD_MODULE_IEEE80211,
 989                                        HOSTAPD_LEVEL_DEBUG,
 990                                        "could not add dynamic VLAN interface for vlan=%d%s",
 991                                        vlan_desc ? vlan_desc->untagged : -1,
 992                                        (vlan_desc && vlan_desc->tagged[0]) ?
 993                                        "+" : "");
 994                         vlan_id = 0;
 995                         ret = -1;
 996                         goto done;
 997                 }
 998
 999                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1000                                HOSTAPD_LEVEL_DEBUG,
1001                                "added new dynamic VLAN interface '%s'",
1002                                vlan->ifname);
1003         } else if (vlan && vlan->dynamic_vlan > 0) {
1004                 vlan->dynamic_vlan++;
1005                 hostapd_logger(hapd, sta->addr,
1006                                HOSTAPD_MODULE_IEEE80211,
1007                                HOSTAPD_LEVEL_DEBUG,
1008                                "updated existing dynamic VLAN interface '%s'",
1009                                vlan->ifname);
1010         }
1011 done:
1012         old_vlan_id = sta->vlan_id;
1013         sta->vlan_id = vlan_id;
1014         sta->vlan_desc = vlan ? &vlan->vlan_desc : NULL;
1015
1016         if (vlan_id != old_vlan_id && old_vlan_id)
1017                 vlan_remove_dynamic(hapd, old_vlan_id);
1018
1019         return ret;
1020 }
1021
1022
1023 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta)
1024 {
1025 #ifndef CONFIG_NO_VLAN
1026         const char *iface;
1027         struct hostapd_vlan *vlan = NULL;
1028         int ret;
1029         int old_vlanid = sta->vlan_id_bound;
1030
1031         iface = hapd->conf->iface;
1032         if (hapd->conf->ssid.vlan[0])
1033                 iface = hapd->conf->ssid.vlan;
1034
1035         if (sta->vlan_id > 0) {
1036                 for (vlan = hapd->conf->vlan; vlan; vlan = vlan->next) {
1037                         if (vlan->vlan_id == sta->vlan_id)
1038                                 break;
1039                 }
1040                 if (vlan)
1041                         iface = vlan->ifname;
1042         }
1043
1044         /*
1045          * Do not increment ref counters if the VLAN ID remains same, but do
1046          * not skip hostapd_drv_set_sta_vlan() as hostapd_drv_sta_remove() might
1047          * have been called before.
1048          */
1049         if (sta->vlan_id == old_vlanid)
1050                 goto skip_counting;
1051
1052         if (sta->vlan_id > 0 && vlan == NULL) {
1053                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1054                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
1055                                "binding station to (vlan_id=%d)",
1056                                sta->vlan_id);
1057                 ret = -1;
1058                 goto done;
1059         } else if (vlan && vlan->dynamic_vlan > 0) {
1060                 vlan->dynamic_vlan++;
1061                 hostapd_logger(hapd, sta->addr,
1062                                HOSTAPD_MODULE_IEEE80211,
1063                                HOSTAPD_LEVEL_DEBUG,
1064                                "updated existing dynamic VLAN interface '%s'",
1065                                iface);
1066         }
1067
1068         /* ref counters have been increased, so mark the station */
1069         sta->vlan_id_bound = sta->vlan_id;
1070
1071 skip_counting:
1072         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1073                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
1074                        "'%s'", iface);
1075
1076         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
1077                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
1078
1079         ret = hostapd_drv_set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
1080         if (ret < 0) {
1081                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1082                                HOSTAPD_LEVEL_DEBUG, "could not bind the STA "
1083                                "entry to vlan_id=%d", sta->vlan_id);
1084         }
1085
1086         /* During 1x reauth, if the vlan id changes, then remove the old id. */
1087         if (old_vlanid > 0 && old_vlanid != sta->vlan_id)
1088                 vlan_remove_dynamic(hapd, old_vlanid);
1089 done:
1090
1091         return ret;
1092 #else /* CONFIG_NO_VLAN */
1093         return 0;
1094 #endif /* CONFIG_NO_VLAN */
1095 }
1096
1097
1098 #ifdef CONFIG_IEEE80211W
1099
1100 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
1101 {
1102         u32 tu;
1103         struct os_reltime now, passed;
1104         os_get_reltime(&now);
1105         os_reltime_sub(&now, &sta->sa_query_start, &passed);
1106         tu = (passed.sec * 1000000 + passed.usec) / 1024;
1107         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
1108                 hostapd_logger(hapd, sta->addr,
1109                                HOSTAPD_MODULE_IEEE80211,
1110                                HOSTAPD_LEVEL_DEBUG,
1111                                "association SA Query timed out");
1112                 sta->sa_query_timed_out = 1;
1113                 os_free(sta->sa_query_trans_id);
1114                 sta->sa_query_trans_id = NULL;
1115                 sta->sa_query_count = 0;
1116                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
1117                 return 1;
1118         }
1119
1120         return 0;
1121 }
1122
1123
1124 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1125 {
1126         struct hostapd_data *hapd = eloop_ctx;
1127         struct sta_info *sta = timeout_ctx;
1128         unsigned int timeout, sec, usec;
1129         u8 *trans_id, *nbuf;
1130
1131         wpa_printf(MSG_DEBUG, "%s: SA Query timer for STA " MACSTR
1132                    " (count=%d)",
1133                    hapd->conf->iface, MAC2STR(sta->addr), sta->sa_query_count);
1134
1135         if (sta->sa_query_count > 0 &&
1136             ap_check_sa_query_timeout(hapd, sta))
1137                 return;
1138
1139         nbuf = os_realloc_array(sta->sa_query_trans_id,
1140                                 sta->sa_query_count + 1,
1141                                 WLAN_SA_QUERY_TR_ID_LEN);
1142         if (nbuf == NULL)
1143                 return;
1144         if (sta->sa_query_count == 0) {
1145                 /* Starting a new SA Query procedure */
1146                 os_get_reltime(&sta->sa_query_start);
1147         }
1148         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1149         sta->sa_query_trans_id = nbuf;
1150         sta->sa_query_count++;
1151
1152         if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
1153                 /*
1154                  * We don't really care which ID is used here, so simply
1155                  * hardcode this if the mostly theoretical os_get_random()
1156                  * failure happens.
1157                  */
1158                 trans_id[0] = 0x12;
1159                 trans_id[1] = 0x34;
1160         }
1161
1162         timeout = hapd->conf->assoc_sa_query_retry_timeout;
1163         sec = ((timeout / 1000) * 1024) / 1000;
1164         usec = (timeout % 1000) * 1024;
1165         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
1166
1167         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1168                        HOSTAPD_LEVEL_DEBUG,
1169                        "association SA Query attempt %d", sta->sa_query_count);
1170
1171         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
1172 }
1173
1174
1175 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
1176 {
1177         ap_sa_query_timer(hapd, sta);
1178 }
1179
1180
1181 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
1182 {
1183         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
1184         os_free(sta->sa_query_trans_id);
1185         sta->sa_query_trans_id = NULL;
1186         sta->sa_query_count = 0;
1187 }
1188
1189 #endif /* CONFIG_IEEE80211W */
1190
1191
1192 const char * ap_sta_wpa_get_keyid(struct hostapd_data *hapd,
1193                                   struct sta_info *sta)
1194 {
1195         struct hostapd_wpa_psk *psk;
1196         struct hostapd_ssid *ssid;
1197         const u8 *pmk;
1198         int pmk_len;
1199
1200         ssid = &hapd->conf->ssid;
1201
1202         pmk = wpa_auth_get_pmk(sta->wpa_sm, &pmk_len);
1203         if (!pmk || pmk_len != PMK_LEN)
1204                 return NULL;
1205
1206         for (psk = ssid->wpa_psk; psk; psk = psk->next)
1207                 if (os_memcmp(pmk, psk->psk, PMK_LEN) == 0)
1208                         break;
1209         if (!psk)
1210                 return NULL;
1211         if (!psk || !psk->keyid[0])
1212                 return NULL;
1213
1214         return psk->keyid;
1215 }
1216
1217
1218 void ap_sta_set_authorized(struct hostapd_data *hapd, struct sta_info *sta,
1219                            int authorized)
1220 {
1221         const u8 *dev_addr = NULL;
1222         char buf[100];
1223 #ifdef CONFIG_P2P
1224         u8 addr[ETH_ALEN];
1225         u8 ip_addr_buf[4];
1226 #endif /* CONFIG_P2P */
1227
1228         if (!!authorized == !!(sta->flags & WLAN_STA_AUTHORIZED))
1229                 return;
1230
1231         if (authorized)
1232                 sta->flags |= WLAN_STA_AUTHORIZED;
1233         else
1234                 sta->flags &= ~WLAN_STA_AUTHORIZED;
1235
1236 #ifdef CONFIG_P2P
1237         if (hapd->p2p_group == NULL) {
1238                 if (sta->p2p_ie != NULL &&
1239                     p2p_parse_dev_addr_in_p2p_ie(sta->p2p_ie, addr) == 0)
1240                         dev_addr = addr;
1241         } else
1242                 dev_addr = p2p_group_get_dev_addr(hapd->p2p_group, sta->addr);
1243
1244         if (dev_addr)
1245                 os_snprintf(buf, sizeof(buf), MACSTR " p2p_dev_addr=" MACSTR,
1246                             MAC2STR(sta->addr), MAC2STR(dev_addr));
1247         else
1248 #endif /* CONFIG_P2P */
1249                 os_snprintf(buf, sizeof(buf), MACSTR, MAC2STR(sta->addr));
1250
1251         if (hapd->sta_authorized_cb)
1252                 hapd->sta_authorized_cb(hapd->sta_authorized_cb_ctx,
1253                                         sta->addr, authorized, dev_addr);
1254
1255         if (authorized) {
1256                 const char *keyid;
1257                 char keyid_buf[100];
1258                 char ip_addr[100];
1259
1260                 keyid_buf[0] = '\0';
1261                 ip_addr[0] = '\0';
1262 #ifdef CONFIG_P2P
1263                 if (wpa_auth_get_ip_addr(sta->wpa_sm, ip_addr_buf) == 0) {
1264                         os_snprintf(ip_addr, sizeof(ip_addr),
1265                                     " ip_addr=%u.%u.%u.%u",
1266                                     ip_addr_buf[0], ip_addr_buf[1],
1267                                     ip_addr_buf[2], ip_addr_buf[3]);
1268                 }
1269 #endif /* CONFIG_P2P */
1270
1271                 keyid = ap_sta_wpa_get_keyid(hapd, sta);
1272                 if (keyid) {
1273                         os_snprintf(keyid_buf, sizeof(keyid_buf),
1274                                     " keyid=%s", keyid);
1275                 }
1276
1277                 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED "%s%s%s",
1278                         buf, ip_addr, keyid_buf);
1279
1280                 if (hapd->msg_ctx_parent &&
1281                     hapd->msg_ctx_parent != hapd->msg_ctx)
1282                         wpa_msg_no_global(hapd->msg_ctx_parent, MSG_INFO,
1283                                           AP_STA_CONNECTED "%s%s%s",
1284                                           buf, ip_addr, keyid_buf);
1285         } else {
1286                 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED "%s", buf);
1287
1288                 if (hapd->msg_ctx_parent &&
1289                     hapd->msg_ctx_parent != hapd->msg_ctx)
1290                         wpa_msg_no_global(hapd->msg_ctx_parent, MSG_INFO,
1291                                           AP_STA_DISCONNECTED "%s", buf);
1292         }
1293
1294 #ifdef CONFIG_FST
1295         if (hapd->iface->fst) {
1296                 if (authorized)
1297                         fst_notify_peer_connected(hapd->iface->fst, sta->addr);
1298                 else
1299                         fst_notify_peer_disconnected(hapd->iface->fst,
1300                                                      sta->addr);
1301         }
1302 #endif /* CONFIG_FST */
1303 }
1304
1305
1306 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
1307                        const u8 *addr, u16 reason)
1308 {
1309         if (sta)
1310                 wpa_printf(MSG_DEBUG, "%s: %s STA " MACSTR " reason=%u",
1311                            hapd->conf->iface, __func__, MAC2STR(sta->addr),
1312                            reason);
1313         else if (addr)
1314                 wpa_printf(MSG_DEBUG, "%s: %s addr " MACSTR " reason=%u",
1315                            hapd->conf->iface, __func__, MAC2STR(addr),
1316                            reason);
1317
1318         if (sta == NULL && addr)
1319                 sta = ap_get_sta(hapd, addr);
1320
1321         if (addr)
1322                 hostapd_drv_sta_deauth(hapd, addr, reason);
1323
1324         if (sta == NULL)
1325                 return;
1326         ap_sta_set_authorized(hapd, sta, 0);
1327         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1328         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1329         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1330         wpa_printf(MSG_DEBUG, "%s: %s: reschedule ap_handle_timer timeout "
1331                    "for " MACSTR " (%d seconds - "
1332                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
1333                    hapd->conf->iface, __func__, MAC2STR(sta->addr),
1334                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
1335         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1336         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
1337                                ap_handle_timer, hapd, sta);
1338         sta->timeout_next = STA_REMOVE;
1339
1340         if (hapd->iface->current_mode &&
1341             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211AD) {
1342                 /* Deauthentication is not used in DMG/IEEE 802.11ad;
1343                  * disassociate the STA instead. */
1344                 sta->disassoc_reason = reason;
1345                 sta->flags |= WLAN_STA_PENDING_DISASSOC_CB;
1346                 eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
1347                 eloop_register_timeout(hapd->iface->drv_flags &
1348                                        WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ?
1349                                        2 : 0, 0, ap_sta_disassoc_cb_timeout,
1350                                        hapd, sta);
1351                 return;
1352         }
1353
1354         sta->deauth_reason = reason;
1355         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
1356         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
1357         eloop_register_timeout(hapd->iface->drv_flags &
1358                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
1359                                ap_sta_deauth_cb_timeout, hapd, sta);
1360 }
1361
1362
1363 void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta)
1364 {
1365         if (!(sta->flags & WLAN_STA_PENDING_DEAUTH_CB)) {
1366                 wpa_printf(MSG_DEBUG, "Ignore deauth cb for test frame");
1367                 return;
1368         }
1369         sta->flags &= ~WLAN_STA_PENDING_DEAUTH_CB;
1370         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
1371         ap_sta_deauth_cb_timeout(hapd, sta);
1372 }
1373
1374
1375 void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta)
1376 {
1377         if (!(sta->flags & WLAN_STA_PENDING_DISASSOC_CB)) {
1378                 wpa_printf(MSG_DEBUG, "Ignore disassoc cb for test frame");
1379                 return;
1380         }
1381         sta->flags &= ~WLAN_STA_PENDING_DISASSOC_CB;
1382         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
1383         ap_sta_disassoc_cb_timeout(hapd, sta);
1384 }
1385
1386
1387 void ap_sta_clear_disconnect_timeouts(struct hostapd_data *hapd,
1388                                       struct sta_info *sta)
1389 {
1390         if (eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta) > 0)
1391                 wpa_printf(MSG_DEBUG,
1392                            "%s: Removed ap_sta_deauth_cb_timeout timeout for "
1393                            MACSTR,
1394                            hapd->conf->iface, MAC2STR(sta->addr));
1395         if (eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta) > 0)
1396                 wpa_printf(MSG_DEBUG,
1397                            "%s: Removed ap_sta_disassoc_cb_timeout timeout for "
1398                            MACSTR,
1399                            hapd->conf->iface, MAC2STR(sta->addr));
1400         if (eloop_cancel_timeout(ap_sta_delayed_1x_auth_fail_cb, hapd, sta) > 0)
1401         {
1402                 wpa_printf(MSG_DEBUG,
1403                            "%s: Removed ap_sta_delayed_1x_auth_fail_cb timeout for "
1404                            MACSTR,
1405                            hapd->conf->iface, MAC2STR(sta->addr));
1406                 if (sta->flags & WLAN_STA_WPS)
1407                         hostapd_wps_eap_completed(hapd);
1408         }
1409 }
1410
1411
1412 int ap_sta_flags_txt(u32 flags, char *buf, size_t buflen)
1413 {
1414         int res;
1415
1416         buf[0] = '\0';
1417         res = os_snprintf(buf, buflen, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
1418                           (flags & WLAN_STA_AUTH ? "[AUTH]" : ""),
1419                           (flags & WLAN_STA_ASSOC ? "[ASSOC]" : ""),
1420                           (flags & WLAN_STA_AUTHORIZED ? "[AUTHORIZED]" : ""),
1421                           (flags & WLAN_STA_PENDING_POLL ? "[PENDING_POLL" :
1422                            ""),
1423                           (flags & WLAN_STA_SHORT_PREAMBLE ?
1424                            "[SHORT_PREAMBLE]" : ""),
1425                           (flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""),
1426                           (flags & WLAN_STA_WMM ? "[WMM]" : ""),
1427                           (flags & WLAN_STA_MFP ? "[MFP]" : ""),
1428                           (flags & WLAN_STA_WPS ? "[WPS]" : ""),
1429                           (flags & WLAN_STA_MAYBE_WPS ? "[MAYBE_WPS]" : ""),
1430                           (flags & WLAN_STA_WDS ? "[WDS]" : ""),
1431                           (flags & WLAN_STA_NONERP ? "[NonERP]" : ""),
1432                           (flags & WLAN_STA_WPS2 ? "[WPS2]" : ""),
1433                           (flags & WLAN_STA_GAS ? "[GAS]" : ""),
1434                           (flags & WLAN_STA_HT ? "[HT]" : ""),
1435                           (flags & WLAN_STA_VHT ? "[VHT]" : ""),
1436                           (flags & WLAN_STA_VENDOR_VHT ? "[VENDOR_VHT]" : ""),
1437                           (flags & WLAN_STA_WNM_SLEEP_MODE ?
1438                            "[WNM_SLEEP_MODE]" : ""));
1439         if (os_snprintf_error(buflen, res))
1440                 res = -1;
1441
1442         return res;
1443 }
1444
1445
1446 static void ap_sta_delayed_1x_auth_fail_cb(void *eloop_ctx, void *timeout_ctx)
1447 {
1448         struct hostapd_data *hapd = eloop_ctx;
1449         struct sta_info *sta = timeout_ctx;
1450         u16 reason;
1451
1452         wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
1453                 "IEEE 802.1X: Scheduled disconnection of " MACSTR
1454                 " after EAP-Failure", MAC2STR(sta->addr));
1455
1456         reason = sta->disconnect_reason_code;
1457         if (!reason)
1458                 reason = WLAN_REASON_IEEE_802_1X_AUTH_FAILED;
1459         ap_sta_disconnect(hapd, sta, sta->addr, reason);
1460         if (sta->flags & WLAN_STA_WPS)
1461                 hostapd_wps_eap_completed(hapd);
1462 }
1463
1464
1465 void ap_sta_delayed_1x_auth_fail_disconnect(struct hostapd_data *hapd,
1466                                             struct sta_info *sta)
1467 {
1468         wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
1469                 "IEEE 802.1X: Force disconnection of " MACSTR
1470                 " after EAP-Failure in 10 ms", MAC2STR(sta->addr));
1471
1472         /*
1473          * Add a small sleep to increase likelihood of previously requested
1474          * EAP-Failure TX getting out before this should the driver reorder
1475          * operations.
1476          */
1477         eloop_cancel_timeout(ap_sta_delayed_1x_auth_fail_cb, hapd, sta);
1478         eloop_register_timeout(0, 10000, ap_sta_delayed_1x_auth_fail_cb,
1479                                hapd, sta);
1480 }
1481
1482
1483 int ap_sta_pending_delayed_1x_auth_fail_disconnect(struct hostapd_data *hapd,
1484                                                    struct sta_info *sta)
1485 {
1486         return eloop_is_timeout_registered(ap_sta_delayed_1x_auth_fail_cb,
1487                                            hapd, sta);
1488 }