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         hostapd_free_psk_list(sta->psk);
 334         os_free(sta->identity);
 335         os_free(sta->radius_cui);
 336         os_free(sta->remediation_url);
 337         os_free(sta->t_c_url);
 338         wpabuf_free(sta->hs20_deauth_req);
 339         os_free(sta->hs20_session_info_url);
 340
 341 #ifdef CONFIG_SAE
 342         sae_clear_data(sta->sae);
 343         os_free(sta->sae);
 344 #endif /* CONFIG_SAE */
 345
 346         mbo_ap_sta_free(sta);
 347         os_free(sta->supp_op_classes);
 348
 349 #ifdef CONFIG_FILS
 350         os_free(sta->fils_pending_assoc_req);
 351         wpabuf_free(sta->fils_hlp_resp);
 352         wpabuf_free(sta->hlp_dhcp_discover);
 353         eloop_cancel_timeout(fils_hlp_timeout, hapd, sta);
 354 #ifdef CONFIG_FILS_SK_PFS
 355         crypto_ecdh_deinit(sta->fils_ecdh);
 356         wpabuf_clear_free(sta->fils_dh_ss);
 357         wpabuf_free(sta->fils_g_sta);
 358 #endif /* CONFIG_FILS_SK_PFS */
 359 #endif /* CONFIG_FILS */
 360
 361 #ifdef CONFIG_OWE
 362         bin_clear_free(sta->owe_pmk, sta->owe_pmk_len);
 363         crypto_ecdh_deinit(sta->owe_ecdh);
 364 #endif /* CONFIG_OWE */
 365
 366 #ifdef CONFIG_DPP2
 367         dpp_pfs_free(sta->dpp_pfs);
 368         sta->dpp_pfs = NULL;
 369 #endif /* CONFIG_DPP2 */
 370
 371         os_free(sta->ext_capability);
 372
 373 #ifdef CONFIG_WNM_AP
 374         eloop_cancel_timeout(ap_sta_reset_steer_flag_timer, hapd, sta);
 375 #endif /* CONFIG_WNM_AP */
 376
 377         os_free(sta->ifname_wds);
 378
 379         os_free(sta);
 380 }
 381
 382
 383 void hostapd_free_stas(struct hostapd_data *hapd)
 384 {
 385         struct sta_info *sta, *prev;
 386
 387         sta = hapd->sta_list;
 388
 389         while (sta) {
 390                 prev = sta;
 391                 if (sta->flags & WLAN_STA_AUTH) {
 392                         mlme_deauthenticate_indication(
 393                                 hapd, sta, WLAN_REASON_UNSPECIFIED);
 394                 }
 395                 sta = sta->next;
 396                 wpa_printf(MSG_DEBUG, "Removing station " MACSTR,
 397                            MAC2STR(prev->addr));
 398                 ap_free_sta(hapd, prev);
 399         }
 400 }
 401
 402
 403 /**
 404  * ap_handle_timer - Per STA timer handler
 405  * @eloop_ctx: struct hostapd_data *
 406  * @timeout_ctx: struct sta_info *
 407  *
 408  * This function is called to check station activity and to remove inactive
 409  * stations.
 410  */
 411 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 412 {
 413         struct hostapd_data *hapd = eloop_ctx;
 414         struct sta_info *sta = timeout_ctx;
 415         unsigned long next_time = 0;
 416         int reason;
 417
 418         wpa_printf(MSG_DEBUG, "%s: %s: " MACSTR " flags=0x%x timeout_next=%d",
 419                    hapd->conf->iface, __func__, MAC2STR(sta->addr), sta->flags,
 420                    sta->timeout_next);
 421         if (sta->timeout_next == STA_REMOVE) {
 422                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 423                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 424                                "local deauth request");
 425                 ap_free_sta(hapd, sta);
 426                 return;
 427         }
 428
 429         if ((sta->flags & WLAN_STA_ASSOC) &&
 430             (sta->timeout_next == STA_NULLFUNC ||
 431              sta->timeout_next == STA_DISASSOC)) {
 432                 int inactive_sec;
 433                 /*
 434                  * Add random value to timeout so that we don't end up bouncing
 435                  * all stations at the same time if we have lots of associated
 436                  * stations that are idle (but keep re-associating).
 437                  */
 438                 int fuzz = os_random() % 20;
 439                 inactive_sec = hostapd_drv_get_inact_sec(hapd, sta->addr);
 440                 if (inactive_sec == -1) {
 441                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 442                                 "Check inactivity: Could not "
 443                                 "get station info from kernel driver for "
 444                                 MACSTR, MAC2STR(sta->addr));
 445                         /*
 446                          * The driver may not support this functionality.
 447                          * Anyway, try again after the next inactivity timeout,
 448                          * but do not disconnect the station now.
 449                          */
 450                         next_time = hapd->conf->ap_max_inactivity + fuzz;
 451                 } else if (inactive_sec == -ENOENT) {
 452                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 453                                 "Station " MACSTR " has lost its driver entry",
 454                                 MAC2STR(sta->addr));
 455
 456                         /* Avoid sending client probe on removed client */
 457                         sta->timeout_next = STA_DISASSOC;
 458                         goto skip_poll;
 459                 } else if (inactive_sec < hapd->conf->ap_max_inactivity) {
 460                         /* station activity detected; reset timeout state */
 461                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 462                                 "Station " MACSTR " has been active %is ago",
 463                                 MAC2STR(sta->addr), inactive_sec);
 464                         sta->timeout_next = STA_NULLFUNC;
 465                         next_time = hapd->conf->ap_max_inactivity + fuzz -
 466                                 inactive_sec;
 467                 } else {
 468                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 469                                 "Station " MACSTR " has been "
 470                                 "inactive too long: %d sec, max allowed: %d",
 471                                 MAC2STR(sta->addr), inactive_sec,
 472                                 hapd->conf->ap_max_inactivity);
 473
 474                         if (hapd->conf->skip_inactivity_poll)
 475                                 sta->timeout_next = STA_DISASSOC;
 476                 }
 477         }
 478
 479         if ((sta->flags & WLAN_STA_ASSOC) &&
 480             sta->timeout_next == STA_DISASSOC &&
 481             !(sta->flags & WLAN_STA_PENDING_POLL) &&
 482             !hapd->conf->skip_inactivity_poll) {
 483                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR
 484                         " has ACKed data poll", MAC2STR(sta->addr));
 485                 /* data nullfunc frame poll did not produce TX errors; assume
 486                  * station ACKed it */
 487                 sta->timeout_next = STA_NULLFUNC;
 488                 next_time = hapd->conf->ap_max_inactivity;
 489         }
 490
 491 skip_poll:
 492         if (next_time) {
 493                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 494                            "for " MACSTR " (%lu seconds)",
 495                            __func__, MAC2STR(sta->addr), next_time);
 496                 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
 497                                        sta);
 498                 return;
 499         }
 500
 501         if (sta->timeout_next == STA_NULLFUNC &&
 502             (sta->flags & WLAN_STA_ASSOC)) {
 503                 wpa_printf(MSG_DEBUG, "  Polling STA");
 504                 sta->flags |= WLAN_STA_PENDING_POLL;
 505                 hostapd_drv_poll_client(hapd, hapd->own_addr, sta->addr,
 506                                         sta->flags & WLAN_STA_WMM);
 507         } else if (sta->timeout_next != STA_REMOVE) {
 508                 int deauth = sta->timeout_next == STA_DEAUTH;
 509
 510                 if (!deauth && !(sta->flags & WLAN_STA_ASSOC)) {
 511                         /* Cannot disassociate not-associated STA, so move
 512                          * directly to deauthentication. */
 513                         sta->timeout_next = STA_DEAUTH;
 514                         deauth = 1;
 515                 }
 516
 517                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 518                         "Timeout, sending %s info to STA " MACSTR,
 519                         deauth ? "deauthentication" : "disassociation",
 520                         MAC2STR(sta->addr));
 521
 522                 if (deauth) {
 523                         hostapd_drv_sta_deauth(
 524                                 hapd, sta->addr,
 525                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
 526                 } else {
 527                         reason = (sta->timeout_next == STA_DISASSOC) ?
 528                                 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY :
 529                                 WLAN_REASON_PREV_AUTH_NOT_VALID;
 530
 531                         hostapd_drv_sta_disassoc(hapd, sta->addr, reason);
 532                 }
 533         }
 534
 535         switch (sta->timeout_next) {
 536         case STA_NULLFUNC:
 537                 sta->timeout_next = STA_DISASSOC;
 538                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 539                            "for " MACSTR " (%d seconds - AP_DISASSOC_DELAY)",
 540                            __func__, MAC2STR(sta->addr), AP_DISASSOC_DELAY);
 541                 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
 542                                        hapd, sta);
 543                 break;
 544         case STA_DISASSOC:
 545         case STA_DISASSOC_FROM_CLI:
 546                 ap_sta_set_authorized(hapd, sta, 0);
 547                 sta->flags &= ~WLAN_STA_ASSOC;
 548                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 549                 if (!sta->acct_terminate_cause)
 550                         sta->acct_terminate_cause =
 551                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 552                 accounting_sta_stop(hapd, sta);
 553                 ieee802_1x_free_station(hapd, sta);
 554                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 555                                HOSTAPD_LEVEL_INFO, "disassociated due to "
 556                                "inactivity");
 557                 reason = (sta->timeout_next == STA_DISASSOC) ?
 558                         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY :
 559                         WLAN_REASON_PREV_AUTH_NOT_VALID;
 560                 sta->timeout_next = STA_DEAUTH;
 561                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 562                            "for " MACSTR " (%d seconds - AP_DEAUTH_DELAY)",
 563                            __func__, MAC2STR(sta->addr), AP_DEAUTH_DELAY);
 564                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
 565                                        hapd, sta);
 566                 mlme_disassociate_indication(hapd, sta, reason);
 567                 break;
 568         case STA_DEAUTH:
 569         case STA_REMOVE:
 570                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 571                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 572                                "inactivity (timer DEAUTH/REMOVE)");
 573                 if (!sta->acct_terminate_cause)
 574                         sta->acct_terminate_cause =
 575                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 576                 mlme_deauthenticate_indication(
 577                         hapd, sta,
 578                         WLAN_REASON_PREV_AUTH_NOT_VALID);
 579                 ap_free_sta(hapd, sta);
 580                 break;
 581         }
 582 }
 583
 584
 585 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx)
 586 {
 587         struct hostapd_data *hapd = eloop_ctx;
 588         struct sta_info *sta = timeout_ctx;
 589
 590         wpa_printf(MSG_DEBUG, "%s: Session timer for STA " MACSTR,
 591                    hapd->conf->iface, MAC2STR(sta->addr));
 592         if (!(sta->flags & WLAN_STA_AUTH)) {
 593                 if (sta->flags & WLAN_STA_GAS) {
 594                         wpa_printf(MSG_DEBUG, "GAS: Remove temporary STA "
 595                                    "entry " MACSTR, MAC2STR(sta->addr));
 596                         ap_free_sta(hapd, sta);
 597                 }
 598                 return;
 599         }
 600
 601         hostapd_drv_sta_deauth(hapd, sta->addr,
 602                                WLAN_REASON_PREV_AUTH_NOT_VALID);
 603         mlme_deauthenticate_indication(hapd, sta,
 604                                        WLAN_REASON_PREV_AUTH_NOT_VALID);
 605         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 606                        HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 607                        "session timeout");
 608         sta->acct_terminate_cause =
 609                 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT;
 610         ap_free_sta(hapd, sta);
 611 }
 612
 613
 614 void ap_sta_replenish_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 615                               u32 session_timeout)
 616 {
 617         if (eloop_replenish_timeout(session_timeout, 0,
 618                                     ap_handle_session_timer, hapd, sta) == 1) {
 619                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 620                                HOSTAPD_LEVEL_DEBUG, "setting session timeout "
 621                                "to %d seconds", session_timeout);
 622         }
 623 }
 624
 625
 626 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 627                             u32 session_timeout)
 628 {
 629         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 630                        HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d "
 631                        "seconds", session_timeout);
 632         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 633         eloop_register_timeout(session_timeout, 0, ap_handle_session_timer,
 634                                hapd, sta);
 635 }
 636
 637
 638 void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 639 {
 640         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 641 }
 642
 643
 644 static void ap_handle_session_warning_timer(void *eloop_ctx, void *timeout_ctx)
 645 {
 646 #ifdef CONFIG_WNM_AP
 647         struct hostapd_data *hapd = eloop_ctx;
 648         struct sta_info *sta = timeout_ctx;
 649
 650         wpa_printf(MSG_DEBUG, "%s: WNM: Session warning time reached for "
 651                    MACSTR, hapd->conf->iface, MAC2STR(sta->addr));
 652         if (sta->hs20_session_info_url == NULL)
 653                 return;
 654
 655         wnm_send_ess_disassoc_imminent(hapd, sta, sta->hs20_session_info_url,
 656                                        sta->hs20_disassoc_timer);
 657 #endif /* CONFIG_WNM_AP */
 658 }
 659
 660
 661 void ap_sta_session_warning_timeout(struct hostapd_data *hapd,
 662                                     struct sta_info *sta, int warning_time)
 663 {
 664         eloop_cancel_timeout(ap_handle_session_warning_timer, hapd, sta);
 665         eloop_register_timeout(warning_time, 0, ap_handle_session_warning_timer,
 666                                hapd, sta);
 667 }
 668
 669
 670 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr)
 671 {
 672         struct sta_info *sta;
 673
 674         sta = ap_get_sta(hapd, addr);
 675         if (sta)
 676                 return sta;
 677
 678         wpa_printf(MSG_DEBUG, "  New STA");
 679         if (hapd->num_sta >= hapd->conf->max_num_sta) {
 680                 /* FIX: might try to remove some old STAs first? */
 681                 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)",
 682                            hapd->num_sta, hapd->conf->max_num_sta);
 683                 return NULL;
 684         }
 685
 686         sta = os_zalloc(sizeof(struct sta_info));
 687         if (sta == NULL) {
 688                 wpa_printf(MSG_ERROR, "malloc failed");
 689                 return NULL;
 690         }
 691         sta->acct_interim_interval = hapd->conf->acct_interim_interval;
 692         if (accounting_sta_get_id(hapd, sta) < 0) {
 693                 os_free(sta);
 694                 return NULL;
 695         }
 696
 697         if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
 698                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 699                            "for " MACSTR " (%d seconds - ap_max_inactivity)",
 700                            __func__, MAC2STR(addr),
 701                            hapd->conf->ap_max_inactivity);
 702                 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 703                                        ap_handle_timer, hapd, sta);
 704         }
 705
 706         /* initialize STA info data */
 707         os_memcpy(sta->addr, addr, ETH_ALEN);
 708         sta->next = hapd->sta_list;
 709         hapd->sta_list = sta;
 710         hapd->num_sta++;
 711         ap_sta_hash_add(hapd, sta);
 712         ap_sta_remove_in_other_bss(hapd, sta);
 713         sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
 714         dl_list_init(&sta->ip6addr);
 715
 716 #ifdef CONFIG_TAXONOMY
 717         sta_track_claim_taxonomy_info(hapd->iface, addr,
 718                                       &sta->probe_ie_taxonomy);
 719 #endif /* CONFIG_TAXONOMY */
 720
 721         return sta;
 722 }
 723
 724
 725 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 726 {
 727         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 728
 729         if (sta->ipaddr)
 730                 hostapd_drv_br_delete_ip_neigh(hapd, 4, (u8 *) &sta->ipaddr);
 731         ap_sta_ip6addr_del(hapd, sta);
 732
 733         wpa_printf(MSG_DEBUG, "%s: Removing STA " MACSTR " from kernel driver",
 734                    hapd->conf->iface, MAC2STR(sta->addr));
 735         if (hostapd_drv_sta_remove(hapd, sta->addr) &&
 736             sta->flags & WLAN_STA_ASSOC) {
 737                 wpa_printf(MSG_DEBUG, "%s: Could not remove station " MACSTR
 738                            " from kernel driver",
 739                            hapd->conf->iface, MAC2STR(sta->addr));
 740                 return -1;
 741         }
 742         sta->added_unassoc = 0;
 743         return 0;
 744 }
 745
 746
 747 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
 748                                        struct sta_info *sta)
 749 {
 750         struct hostapd_iface *iface = hapd->iface;
 751         size_t i;
 752
 753         for (i = 0; i < iface->num_bss; i++) {
 754                 struct hostapd_data *bss = iface->bss[i];
 755                 struct sta_info *sta2;
 756                 /* bss should always be set during operation, but it may be
 757                  * NULL during reconfiguration. Assume the STA is not
 758                  * associated to another BSS in that case to avoid NULL pointer
 759                  * dereferences. */
 760                 if (bss == hapd || bss == NULL)
 761                         continue;
 762                 sta2 = ap_get_sta(bss, sta->addr);
 763                 if (!sta2)
 764                         continue;
 765
 766                 wpa_printf(MSG_DEBUG, "%s: disconnect old STA " MACSTR
 767                            " association from another BSS %s",
 768                            hapd->conf->iface, MAC2STR(sta2->addr),
 769                            bss->conf->iface);
 770                 ap_sta_disconnect(bss, sta2, sta2->addr,
 771                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
 772         }
 773 }
 774
 775
 776 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 777 {
 778         struct hostapd_data *hapd = eloop_ctx;
 779         struct sta_info *sta = timeout_ctx;
 780
 781         wpa_printf(MSG_DEBUG, "%s: Disassociation callback for STA " MACSTR,
 782                    hapd->conf->iface, MAC2STR(sta->addr));
 783         ap_sta_remove(hapd, sta);
 784         mlme_disassociate_indication(hapd, sta, sta->disassoc_reason);
 785 }
 786
 787
 788 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 789                          u16 reason)
 790 {
 791         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 792                    hapd->conf->iface, MAC2STR(sta->addr));
 793         sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
 794         if (hapd->iface->current_mode &&
 795             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211AD) {
 796                 /* Skip deauthentication in DMG/IEEE 802.11ad */
 797                 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
 798                                 WLAN_STA_ASSOC_REQ_OK);
 799                 sta->timeout_next = STA_REMOVE;
 800         } else {
 801                 sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
 802                 sta->timeout_next = STA_DEAUTH;
 803         }
 804         ap_sta_set_authorized(hapd, sta, 0);
 805         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 806                    "for " MACSTR " (%d seconds - "
 807                    "AP_MAX_INACTIVITY_AFTER_DISASSOC)",
 808                    __func__, MAC2STR(sta->addr),
 809                    AP_MAX_INACTIVITY_AFTER_DISASSOC);
 810         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 811         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 812                                ap_handle_timer, hapd, sta);
 813         accounting_sta_stop(hapd, sta);
 814         ieee802_1x_free_station(hapd, sta);
 815         wpa_auth_sta_deinit(sta->wpa_sm);
 816         sta->wpa_sm = NULL;
 817
 818         sta->disassoc_reason = reason;
 819         sta->flags |= WLAN_STA_PENDING_DISASSOC_CB;
 820         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 821         eloop_register_timeout(hapd->iface->drv_flags &
 822                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 823                                ap_sta_disassoc_cb_timeout, hapd, sta);
 824 }
 825
 826
 827 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 828 {
 829         struct hostapd_data *hapd = eloop_ctx;
 830         struct sta_info *sta = timeout_ctx;
 831
 832         wpa_printf(MSG_DEBUG, "%s: Deauthentication callback for STA " MACSTR,
 833                    hapd->conf->iface, MAC2STR(sta->addr));
 834         ap_sta_remove(hapd, sta);
 835         mlme_deauthenticate_indication(hapd, sta, sta->deauth_reason);
 836 }
 837
 838
 839 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 840                            u16 reason)
 841 {
 842         if (hapd->iface->current_mode &&
 843             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211AD) {
 844                 /* Deauthentication is not used in DMG/IEEE 802.11ad;
 845                  * disassociate the STA instead. */
 846                 ap_sta_disassociate(hapd, sta, reason);
 847                 return;
 848         }
 849
 850         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 851                    hapd->conf->iface, MAC2STR(sta->addr));
 852         sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
 853         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
 854         ap_sta_set_authorized(hapd, sta, 0);
 855         sta->timeout_next = STA_REMOVE;
 856         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 857                    "for " MACSTR " (%d seconds - "
 858                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
 859                    __func__, MAC2STR(sta->addr),
 860                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
 861         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 862         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 863                                ap_handle_timer, hapd, sta);
 864         accounting_sta_stop(hapd, sta);
 865         ieee802_1x_free_station(hapd, sta);
 866
 867         sta->deauth_reason = reason;
 868         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 869         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 870         eloop_register_timeout(hapd->iface->drv_flags &
 871                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 872                                ap_sta_deauth_cb_timeout, hapd, sta);
 873 }
 874
 875
 876 #ifdef CONFIG_WPS
 877 int ap_sta_wps_cancel(struct hostapd_data *hapd,
 878                       struct sta_info *sta, void *ctx)
 879 {
 880         if (sta && (sta->flags & WLAN_STA_WPS)) {
 881                 ap_sta_deauthenticate(hapd, sta,
 882                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 883                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 884                            __func__, MAC2STR(sta->addr));
 885                 return 1;
 886         }
 887
 888         return 0;
 889 }
 890 #endif /* CONFIG_WPS */
 891
 892
 893 static int ap_sta_get_free_vlan_id(struct hostapd_data *hapd)
 894 {
 895         struct hostapd_vlan *vlan;
 896         int vlan_id = MAX_VLAN_ID + 2;
 897
 898 retry:
 899         for (vlan = hapd->conf->vlan; vlan; vlan = vlan->next) {
 900                 if (vlan->vlan_id == vlan_id) {
 901                         vlan_id++;
 902                         goto retry;
 903                 }
 904         }
 905         return vlan_id;
 906 }
 907
 908
 909 int ap_sta_set_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 910                     struct vlan_description *vlan_desc)
 911 {
 912         struct hostapd_vlan *vlan = NULL, *wildcard_vlan = NULL;
 913         int old_vlan_id, vlan_id = 0, ret = 0;
 914
 915         /* Check if there is something to do */
 916         if (hapd->conf->ssid.per_sta_vif && !sta->vlan_id) {
 917                 /* This sta is lacking its own vif */
 918         } else if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_DISABLED &&
 919                    !hapd->conf->ssid.per_sta_vif && sta->vlan_id) {
 920                 /* sta->vlan_id needs to be reset */
 921         } else if (!vlan_compare(vlan_desc, sta->vlan_desc)) {
 922                 return 0; /* nothing to change */
 923         }
 924
 925         /* Now the real VLAN changed or the STA just needs its own vif */
 926         if (hapd->conf->ssid.per_sta_vif) {
 927                 /* Assign a new vif, always */
 928                 /* find a free vlan_id sufficiently big */
 929                 vlan_id = ap_sta_get_free_vlan_id(hapd);
 930                 /* Get wildcard VLAN */
 931                 for (vlan = hapd->conf->vlan; vlan; vlan = vlan->next) {
 932                         if (vlan->vlan_id == VLAN_ID_WILDCARD)
 933                                 break;
 934                 }
 935                 if (!vlan) {
 936                         hostapd_logger(hapd, sta->addr,
 937                                        HOSTAPD_MODULE_IEEE80211,
 938                                        HOSTAPD_LEVEL_DEBUG,
 939                                        "per_sta_vif missing wildcard");
 940                         vlan_id = 0;
 941                         ret = -1;
 942                         goto done;
 943                 }
 944         } else if (vlan_desc && vlan_desc->notempty) {
 945                 for (vlan = hapd->conf->vlan; vlan; vlan = vlan->next) {
 946                         if (!vlan_compare(&vlan->vlan_desc, vlan_desc))
 947                                 break;
 948                         if (vlan->vlan_id == VLAN_ID_WILDCARD)
 949                                 wildcard_vlan = vlan;
 950                 }
 951                 if (vlan) {
 952                         vlan_id = vlan->vlan_id;
 953                 } else if (wildcard_vlan) {
 954                         vlan = wildcard_vlan;
 955                         vlan_id = vlan_desc->untagged;
 956                         if (vlan_desc->tagged[0]) {
 957                                 /* Tagged VLAN configuration */
 958                                 vlan_id = ap_sta_get_free_vlan_id(hapd);
 959                         }
 960                 } else {
 961                         hostapd_logger(hapd, sta->addr,
 962                                        HOSTAPD_MODULE_IEEE80211,
 963                                        HOSTAPD_LEVEL_DEBUG,
 964                                        "missing vlan and wildcard for vlan=%d%s",
 965                                        vlan_desc->untagged,
 966                                        vlan_desc->tagged[0] ? "+" : "");
 967                         vlan_id = 0;
 968                         ret = -1;
 969                         goto done;
 970                 }
 971         }
 972
 973         if (vlan && vlan->vlan_id == VLAN_ID_WILDCARD) {
 974                 vlan = vlan_add_dynamic(hapd, vlan, vlan_id, vlan_desc);
 975                 if (vlan == NULL) {
 976                         hostapd_logger(hapd, sta->addr,
 977                                        HOSTAPD_MODULE_IEEE80211,
 978                                        HOSTAPD_LEVEL_DEBUG,
 979                                        "could not add dynamic VLAN interface for vlan=%d%s",
 980                                        vlan_desc ? vlan_desc->untagged : -1,
 981                                        (vlan_desc && vlan_desc->tagged[0]) ?
 982                                        "+" : "");
 983                         vlan_id = 0;
 984                         ret = -1;
 985                         goto done;
 986                 }
 987
 988                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 989                                HOSTAPD_LEVEL_DEBUG,
 990                                "added new dynamic VLAN interface '%s'",
 991                                vlan->ifname);
 992         } else if (vlan && vlan->dynamic_vlan > 0) {
 993                 vlan->dynamic_vlan++;
 994                 hostapd_logger(hapd, sta->addr,
 995                                HOSTAPD_MODULE_IEEE80211,
 996                                HOSTAPD_LEVEL_DEBUG,
 997                                "updated existing dynamic VLAN interface '%s'",
 998                                vlan->ifname);
 999         }
1000 done:
1001         old_vlan_id = sta->vlan_id;
1002         sta->vlan_id = vlan_id;
1003         sta->vlan_desc = vlan ? &vlan->vlan_desc : NULL;
1004
1005         if (vlan_id != old_vlan_id && old_vlan_id)
1006                 vlan_remove_dynamic(hapd, old_vlan_id);
1007
1008         return ret;
1009 }
1010
1011
1012 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta)
1013 {
1014 #ifndef CONFIG_NO_VLAN
1015         const char *iface;
1016         struct hostapd_vlan *vlan = NULL;
1017         int ret;
1018         int old_vlanid = sta->vlan_id_bound;
1019
1020         iface = hapd->conf->iface;
1021         if (hapd->conf->ssid.vlan[0])
1022                 iface = hapd->conf->ssid.vlan;
1023
1024         if (sta->vlan_id > 0) {
1025                 for (vlan = hapd->conf->vlan; vlan; vlan = vlan->next) {
1026                         if (vlan->vlan_id == sta->vlan_id)
1027                                 break;
1028                 }
1029                 if (vlan)
1030                         iface = vlan->ifname;
1031         }
1032
1033         /*
1034          * Do not increment ref counters if the VLAN ID remains same, but do
1035          * not skip hostapd_drv_set_sta_vlan() as hostapd_drv_sta_remove() might
1036          * have been called before.
1037          */
1038         if (sta->vlan_id == old_vlanid)
1039                 goto skip_counting;
1040
1041         if (sta->vlan_id > 0 && vlan == NULL) {
1042                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1043                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
1044                                "binding station to (vlan_id=%d)",
1045                                sta->vlan_id);
1046                 ret = -1;
1047                 goto done;
1048         } else if (vlan && vlan->dynamic_vlan > 0) {
1049                 vlan->dynamic_vlan++;
1050                 hostapd_logger(hapd, sta->addr,
1051                                HOSTAPD_MODULE_IEEE80211,
1052                                HOSTAPD_LEVEL_DEBUG,
1053                                "updated existing dynamic VLAN interface '%s'",
1054                                iface);
1055         }
1056
1057         /* ref counters have been increased, so mark the station */
1058         sta->vlan_id_bound = sta->vlan_id;
1059
1060 skip_counting:
1061         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1062                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
1063                        "'%s'", iface);
1064
1065         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
1066                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
1067
1068         ret = hostapd_drv_set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
1069         if (ret < 0) {
1070                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1071                                HOSTAPD_LEVEL_DEBUG, "could not bind the STA "
1072                                "entry to vlan_id=%d", sta->vlan_id);
1073         }
1074
1075         /* During 1x reauth, if the vlan id changes, then remove the old id. */
1076         if (old_vlanid > 0 && old_vlanid != sta->vlan_id)
1077                 vlan_remove_dynamic(hapd, old_vlanid);
1078 done:
1079
1080         return ret;
1081 #else /* CONFIG_NO_VLAN */
1082         return 0;
1083 #endif /* CONFIG_NO_VLAN */
1084 }
1085
1086
1087 #ifdef CONFIG_IEEE80211W
1088
1089 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
1090 {
1091         u32 tu;
1092         struct os_reltime now, passed;
1093         os_get_reltime(&now);
1094         os_reltime_sub(&now, &sta->sa_query_start, &passed);
1095         tu = (passed.sec * 1000000 + passed.usec) / 1024;
1096         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
1097                 hostapd_logger(hapd, sta->addr,
1098                                HOSTAPD_MODULE_IEEE80211,
1099                                HOSTAPD_LEVEL_DEBUG,
1100                                "association SA Query timed out");
1101                 sta->sa_query_timed_out = 1;
1102                 os_free(sta->sa_query_trans_id);
1103                 sta->sa_query_trans_id = NULL;
1104                 sta->sa_query_count = 0;
1105                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
1106                 return 1;
1107         }
1108
1109         return 0;
1110 }
1111
1112
1113 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1114 {
1115         struct hostapd_data *hapd = eloop_ctx;
1116         struct sta_info *sta = timeout_ctx;
1117         unsigned int timeout, sec, usec;
1118         u8 *trans_id, *nbuf;
1119
1120         wpa_printf(MSG_DEBUG, "%s: SA Query timer for STA " MACSTR
1121                    " (count=%d)",
1122                    hapd->conf->iface, MAC2STR(sta->addr), sta->sa_query_count);
1123
1124         if (sta->sa_query_count > 0 &&
1125             ap_check_sa_query_timeout(hapd, sta))
1126                 return;
1127
1128         nbuf = os_realloc_array(sta->sa_query_trans_id,
1129                                 sta->sa_query_count + 1,
1130                                 WLAN_SA_QUERY_TR_ID_LEN);
1131         if (nbuf == NULL)
1132                 return;
1133         if (sta->sa_query_count == 0) {
1134                 /* Starting a new SA Query procedure */
1135                 os_get_reltime(&sta->sa_query_start);
1136         }
1137         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1138         sta->sa_query_trans_id = nbuf;
1139         sta->sa_query_count++;
1140
1141         if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
1142                 /*
1143                  * We don't really care which ID is used here, so simply
1144                  * hardcode this if the mostly theoretical os_get_random()
1145                  * failure happens.
1146                  */
1147                 trans_id[0] = 0x12;
1148                 trans_id[1] = 0x34;
1149         }
1150
1151         timeout = hapd->conf->assoc_sa_query_retry_timeout;
1152         sec = ((timeout / 1000) * 1024) / 1000;
1153         usec = (timeout % 1000) * 1024;
1154         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
1155
1156         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1157                        HOSTAPD_LEVEL_DEBUG,
1158                        "association SA Query attempt %d", sta->sa_query_count);
1159
1160         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
1161 }
1162
1163
1164 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
1165 {
1166         ap_sa_query_timer(hapd, sta);
1167 }
1168
1169
1170 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
1171 {
1172         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
1173         os_free(sta->sa_query_trans_id);
1174         sta->sa_query_trans_id = NULL;
1175         sta->sa_query_count = 0;
1176 }
1177
1178 #endif /* CONFIG_IEEE80211W */
1179
1180
1181 const char * ap_sta_wpa_get_keyid(struct hostapd_data *hapd,
1182                                   struct sta_info *sta)
1183 {
1184         struct hostapd_wpa_psk *psk;
1185         struct hostapd_ssid *ssid;
1186         const u8 *pmk;
1187         int pmk_len;
1188
1189         ssid = &hapd->conf->ssid;
1190
1191         pmk = wpa_auth_get_pmk(sta->wpa_sm, &pmk_len);
1192         if (!pmk || pmk_len != PMK_LEN)
1193                 return NULL;
1194
1195         for (psk = ssid->wpa_psk; psk; psk = psk->next)
1196                 if (os_memcmp(pmk, psk->psk, PMK_LEN) == 0)
1197                         break;
1198         if (!psk)
1199                 return NULL;
1200         if (!psk || !psk->keyid[0])
1201                 return NULL;
1202
1203         return psk->keyid;
1204 }
1205
1206
1207 void ap_sta_set_authorized(struct hostapd_data *hapd, struct sta_info *sta,
1208                            int authorized)
1209 {
1210         const u8 *dev_addr = NULL;
1211         char buf[100];
1212 #ifdef CONFIG_P2P
1213         u8 addr[ETH_ALEN];
1214         u8 ip_addr_buf[4];
1215 #endif /* CONFIG_P2P */
1216
1217         if (!!authorized == !!(sta->flags & WLAN_STA_AUTHORIZED))
1218                 return;
1219
1220         if (authorized)
1221                 sta->flags |= WLAN_STA_AUTHORIZED;
1222         else
1223                 sta->flags &= ~WLAN_STA_AUTHORIZED;
1224
1225 #ifdef CONFIG_P2P
1226         if (hapd->p2p_group == NULL) {
1227                 if (sta->p2p_ie != NULL &&
1228                     p2p_parse_dev_addr_in_p2p_ie(sta->p2p_ie, addr) == 0)
1229                         dev_addr = addr;
1230         } else
1231                 dev_addr = p2p_group_get_dev_addr(hapd->p2p_group, sta->addr);
1232
1233         if (dev_addr)
1234                 os_snprintf(buf, sizeof(buf), MACSTR " p2p_dev_addr=" MACSTR,
1235                             MAC2STR(sta->addr), MAC2STR(dev_addr));
1236         else
1237 #endif /* CONFIG_P2P */
1238                 os_snprintf(buf, sizeof(buf), MACSTR, MAC2STR(sta->addr));
1239
1240         if (hapd->sta_authorized_cb)
1241                 hapd->sta_authorized_cb(hapd->sta_authorized_cb_ctx,
1242                                         sta->addr, authorized, dev_addr);
1243
1244         if (authorized) {
1245                 const char *keyid;
1246                 char keyid_buf[100];
1247                 char ip_addr[100];
1248
1249                 keyid_buf[0] = '\0';
1250                 ip_addr[0] = '\0';
1251 #ifdef CONFIG_P2P
1252                 if (wpa_auth_get_ip_addr(sta->wpa_sm, ip_addr_buf) == 0) {
1253                         os_snprintf(ip_addr, sizeof(ip_addr),
1254                                     " ip_addr=%u.%u.%u.%u",
1255                                     ip_addr_buf[0], ip_addr_buf[1],
1256                                     ip_addr_buf[2], ip_addr_buf[3]);
1257                 }
1258 #endif /* CONFIG_P2P */
1259
1260                 keyid = ap_sta_wpa_get_keyid(hapd, sta);
1261                 if (keyid) {
1262                         os_snprintf(keyid_buf, sizeof(keyid_buf),
1263                                     " keyid=%s", keyid);
1264                 }
1265
1266                 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED "%s%s%s",
1267                         buf, ip_addr, keyid_buf);
1268
1269                 if (hapd->msg_ctx_parent &&
1270                     hapd->msg_ctx_parent != hapd->msg_ctx)
1271                         wpa_msg_no_global(hapd->msg_ctx_parent, MSG_INFO,
1272                                           AP_STA_CONNECTED "%s%s%s",
1273                                           buf, ip_addr, keyid_buf);
1274         } else {
1275                 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED "%s", buf);
1276
1277                 if (hapd->msg_ctx_parent &&
1278                     hapd->msg_ctx_parent != hapd->msg_ctx)
1279                         wpa_msg_no_global(hapd->msg_ctx_parent, MSG_INFO,
1280                                           AP_STA_DISCONNECTED "%s", buf);
1281         }
1282
1283 #ifdef CONFIG_FST
1284         if (hapd->iface->fst) {
1285                 if (authorized)
1286                         fst_notify_peer_connected(hapd->iface->fst, sta->addr);
1287                 else
1288                         fst_notify_peer_disconnected(hapd->iface->fst,
1289                                                      sta->addr);
1290         }
1291 #endif /* CONFIG_FST */
1292 }
1293
1294
1295 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
1296                        const u8 *addr, u16 reason)
1297 {
1298         if (sta)
1299                 wpa_printf(MSG_DEBUG, "%s: %s STA " MACSTR " reason=%u",
1300                            hapd->conf->iface, __func__, MAC2STR(sta->addr),
1301                            reason);
1302         else if (addr)
1303                 wpa_printf(MSG_DEBUG, "%s: %s addr " MACSTR " reason=%u",
1304                            hapd->conf->iface, __func__, MAC2STR(addr),
1305                            reason);
1306
1307         if (sta == NULL && addr)
1308                 sta = ap_get_sta(hapd, addr);
1309
1310         if (addr)
1311                 hostapd_drv_sta_deauth(hapd, addr, reason);
1312
1313         if (sta == NULL)
1314                 return;
1315         ap_sta_set_authorized(hapd, sta, 0);
1316         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1317         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1318         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1319         wpa_printf(MSG_DEBUG, "%s: %s: reschedule ap_handle_timer timeout "
1320                    "for " MACSTR " (%d seconds - "
1321                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
1322                    hapd->conf->iface, __func__, MAC2STR(sta->addr),
1323                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
1324         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1325         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
1326                                ap_handle_timer, hapd, sta);
1327         sta->timeout_next = STA_REMOVE;
1328
1329         if (hapd->iface->current_mode &&
1330             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211AD) {
1331                 /* Deauthentication is not used in DMG/IEEE 802.11ad;
1332                  * disassociate the STA instead. */
1333                 sta->disassoc_reason = reason;
1334                 sta->flags |= WLAN_STA_PENDING_DISASSOC_CB;
1335                 eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
1336                 eloop_register_timeout(hapd->iface->drv_flags &
1337                                        WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ?
1338                                        2 : 0, 0, ap_sta_disassoc_cb_timeout,
1339                                        hapd, sta);
1340                 return;
1341         }
1342
1343         sta->deauth_reason = reason;
1344         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
1345         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
1346         eloop_register_timeout(hapd->iface->drv_flags &
1347                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
1348                                ap_sta_deauth_cb_timeout, hapd, sta);
1349 }
1350
1351
1352 void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta)
1353 {
1354         if (!(sta->flags & WLAN_STA_PENDING_DEAUTH_CB)) {
1355                 wpa_printf(MSG_DEBUG, "Ignore deauth cb for test frame");
1356                 return;
1357         }
1358         sta->flags &= ~WLAN_STA_PENDING_DEAUTH_CB;
1359         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
1360         ap_sta_deauth_cb_timeout(hapd, sta);
1361 }
1362
1363
1364 void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta)
1365 {
1366         if (!(sta->flags & WLAN_STA_PENDING_DISASSOC_CB)) {
1367                 wpa_printf(MSG_DEBUG, "Ignore disassoc cb for test frame");
1368                 return;
1369         }
1370         sta->flags &= ~WLAN_STA_PENDING_DISASSOC_CB;
1371         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
1372         ap_sta_disassoc_cb_timeout(hapd, sta);
1373 }
1374
1375
1376 void ap_sta_clear_disconnect_timeouts(struct hostapd_data *hapd,
1377                                       struct sta_info *sta)
1378 {
1379         if (eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta) > 0)
1380                 wpa_printf(MSG_DEBUG,
1381                            "%s: Removed ap_sta_deauth_cb_timeout timeout for "
1382                            MACSTR,
1383                            hapd->conf->iface, MAC2STR(sta->addr));
1384         if (eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta) > 0)
1385                 wpa_printf(MSG_DEBUG,
1386                            "%s: Removed ap_sta_disassoc_cb_timeout timeout for "
1387                            MACSTR,
1388                            hapd->conf->iface, MAC2STR(sta->addr));
1389         if (eloop_cancel_timeout(ap_sta_delayed_1x_auth_fail_cb, hapd, sta) > 0)
1390         {
1391                 wpa_printf(MSG_DEBUG,
1392                            "%s: Removed ap_sta_delayed_1x_auth_fail_cb timeout for "
1393                            MACSTR,
1394                            hapd->conf->iface, MAC2STR(sta->addr));
1395                 if (sta->flags & WLAN_STA_WPS)
1396                         hostapd_wps_eap_completed(hapd);
1397         }
1398 }
1399
1400
1401 int ap_sta_flags_txt(u32 flags, char *buf, size_t buflen)
1402 {
1403         int res;
1404
1405         buf[0] = '\0';
1406         res = os_snprintf(buf, buflen, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
1407                           (flags & WLAN_STA_AUTH ? "[AUTH]" : ""),
1408                           (flags & WLAN_STA_ASSOC ? "[ASSOC]" : ""),
1409                           (flags & WLAN_STA_AUTHORIZED ? "[AUTHORIZED]" : ""),
1410                           (flags & WLAN_STA_PENDING_POLL ? "[PENDING_POLL" :
1411                            ""),
1412                           (flags & WLAN_STA_SHORT_PREAMBLE ?
1413                            "[SHORT_PREAMBLE]" : ""),
1414                           (flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""),
1415                           (flags & WLAN_STA_WMM ? "[WMM]" : ""),
1416                           (flags & WLAN_STA_MFP ? "[MFP]" : ""),
1417                           (flags & WLAN_STA_WPS ? "[WPS]" : ""),
1418                           (flags & WLAN_STA_MAYBE_WPS ? "[MAYBE_WPS]" : ""),
1419                           (flags & WLAN_STA_WDS ? "[WDS]" : ""),
1420                           (flags & WLAN_STA_NONERP ? "[NonERP]" : ""),
1421                           (flags & WLAN_STA_WPS2 ? "[WPS2]" : ""),
1422                           (flags & WLAN_STA_GAS ? "[GAS]" : ""),
1423                           (flags & WLAN_STA_HT ? "[HT]" : ""),
1424                           (flags & WLAN_STA_VHT ? "[VHT]" : ""),
1425                           (flags & WLAN_STA_VENDOR_VHT ? "[VENDOR_VHT]" : ""),
1426                           (flags & WLAN_STA_WNM_SLEEP_MODE ?
1427                            "[WNM_SLEEP_MODE]" : ""));
1428         if (os_snprintf_error(buflen, res))
1429                 res = -1;
1430
1431         return res;
1432 }
1433
1434
1435 static void ap_sta_delayed_1x_auth_fail_cb(void *eloop_ctx, void *timeout_ctx)
1436 {
1437         struct hostapd_data *hapd = eloop_ctx;
1438         struct sta_info *sta = timeout_ctx;
1439         u16 reason;
1440
1441         wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
1442                 "IEEE 802.1X: Scheduled disconnection of " MACSTR
1443                 " after EAP-Failure", MAC2STR(sta->addr));
1444
1445         reason = sta->disconnect_reason_code;
1446         if (!reason)
1447                 reason = WLAN_REASON_IEEE_802_1X_AUTH_FAILED;
1448         ap_sta_disconnect(hapd, sta, sta->addr, reason);
1449         if (sta->flags & WLAN_STA_WPS)
1450                 hostapd_wps_eap_completed(hapd);
1451 }
1452
1453
1454 void ap_sta_delayed_1x_auth_fail_disconnect(struct hostapd_data *hapd,
1455                                             struct sta_info *sta)
1456 {
1457         wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
1458                 "IEEE 802.1X: Force disconnection of " MACSTR
1459                 " after EAP-Failure in 10 ms", MAC2STR(sta->addr));
1460
1461         /*
1462          * Add a small sleep to increase likelihood of previously requested
1463          * EAP-Failure TX getting out before this should the driver reorder
1464          * operations.
1465          */
1466         eloop_cancel_timeout(ap_sta_delayed_1x_auth_fail_cb, hapd, sta);
1467         eloop_register_timeout(0, 10000, ap_sta_delayed_1x_auth_fail_cb,
1468                                hapd, sta);
1469 }
1470
1471
1472 int ap_sta_pending_delayed_1x_auth_fail_disconnect(struct hostapd_data *hapd,
1473                                                    struct sta_info *sta)
1474 {
1475         return eloop_is_timeout_registered(ap_sta_delayed_1x_auth_fail_cb,
1476                                            hapd, sta);
1477 }