src/ap/sta_info.c

   1 /*
   2  * hostapd / Station table
   3  * Copyright (c) 2002-2011, 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 "radius/radius.h"
  16 #include "radius/radius_client.h"
  17 #include "drivers/driver.h"
  18 #include "p2p/p2p.h"
  19 #include "hostapd.h"
  20 #include "accounting.h"
  21 #include "ieee802_1x.h"
  22 #include "ieee802_11.h"
  23 #include "wpa_auth.h"
  24 #include "preauth_auth.h"
  25 #include "ap_config.h"
  26 #include "beacon.h"
  27 #include "ap_mlme.h"
  28 #include "vlan_init.h"
  29 #include "p2p_hostapd.h"
  30 #include "ap_drv_ops.h"
  31 #include "gas_serv.h"
  32 #include "sta_info.h"
  33
  34 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
  35                                        struct sta_info *sta);
  36 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx);
  37 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx);
  38 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx);
  39 #ifdef CONFIG_IEEE80211W
  40 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx);
  41 #endif /* CONFIG_IEEE80211W */
  42 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta);
  43
  44 int ap_for_each_sta(struct hostapd_data *hapd,
  45                     int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
  46                               void *ctx),
  47                     void *ctx)
  48 {
  49         struct sta_info *sta;
  50
  51         for (sta = hapd->sta_list; sta; sta = sta->next) {
  52                 if (cb(hapd, sta, ctx))
  53                         return 1;
  54         }
  55
  56         return 0;
  57 }
  58
  59
  60 struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta)
  61 {
  62         struct sta_info *s;
  63
  64         s = hapd->sta_hash[STA_HASH(sta)];
  65         while (s != NULL && os_memcmp(s->addr, sta, 6) != 0)
  66                 s = s->hnext;
  67         return s;
  68 }
  69
  70
  71 static void ap_sta_list_del(struct hostapd_data *hapd, struct sta_info *sta)
  72 {
  73         struct sta_info *tmp;
  74
  75         if (hapd->sta_list == sta) {
  76                 hapd->sta_list = sta->next;
  77                 return;
  78         }
  79
  80         tmp = hapd->sta_list;
  81         while (tmp != NULL && tmp->next != sta)
  82                 tmp = tmp->next;
  83         if (tmp == NULL) {
  84                 wpa_printf(MSG_DEBUG, "Could not remove STA " MACSTR " from "
  85                            "list.", MAC2STR(sta->addr));
  86         } else
  87                 tmp->next = sta->next;
  88 }
  89
  90
  91 void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta)
  92 {
  93         sta->hnext = hapd->sta_hash[STA_HASH(sta->addr)];
  94         hapd->sta_hash[STA_HASH(sta->addr)] = sta;
  95 }
  96
  97
  98 static void ap_sta_hash_del(struct hostapd_data *hapd, struct sta_info *sta)
  99 {
 100         struct sta_info *s;
 101
 102         s = hapd->sta_hash[STA_HASH(sta->addr)];
 103         if (s == NULL) return;
 104         if (os_memcmp(s->addr, sta->addr, 6) == 0) {
 105                 hapd->sta_hash[STA_HASH(sta->addr)] = s->hnext;
 106                 return;
 107         }
 108
 109         while (s->hnext != NULL &&
 110                os_memcmp(s->hnext->addr, sta->addr, ETH_ALEN) != 0)
 111                 s = s->hnext;
 112         if (s->hnext != NULL)
 113                 s->hnext = s->hnext->hnext;
 114         else
 115                 wpa_printf(MSG_DEBUG, "AP: could not remove STA " MACSTR
 116                            " from hash table", MAC2STR(sta->addr));
 117 }
 118
 119
 120 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
 121 {
 122         int set_beacon = 0;
 123
 124         accounting_sta_stop(hapd, sta);
 125
 126         /* just in case */
 127         ap_sta_set_authorized(hapd, sta, 0);
 128
 129         if (sta->flags & WLAN_STA_WDS)
 130                 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 0);
 131
 132         if (!(sta->flags & WLAN_STA_PREAUTH))
 133                 hostapd_drv_sta_remove(hapd, sta->addr);
 134
 135         ap_sta_hash_del(hapd, sta);
 136         ap_sta_list_del(hapd, sta);
 137
 138         if (sta->aid > 0)
 139                 hapd->sta_aid[(sta->aid - 1) / 32] &=
 140                         ~BIT((sta->aid - 1) % 32);
 141
 142         hapd->num_sta--;
 143         if (sta->nonerp_set) {
 144                 sta->nonerp_set = 0;
 145                 hapd->iface->num_sta_non_erp--;
 146                 if (hapd->iface->num_sta_non_erp == 0)
 147                         set_beacon++;
 148         }
 149
 150         if (sta->no_short_slot_time_set) {
 151                 sta->no_short_slot_time_set = 0;
 152                 hapd->iface->num_sta_no_short_slot_time--;
 153                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 154                     && hapd->iface->num_sta_no_short_slot_time == 0)
 155                         set_beacon++;
 156         }
 157
 158         if (sta->no_short_preamble_set) {
 159                 sta->no_short_preamble_set = 0;
 160                 hapd->iface->num_sta_no_short_preamble--;
 161                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 162                     && hapd->iface->num_sta_no_short_preamble == 0)
 163                         set_beacon++;
 164         }
 165
 166         if (sta->no_ht_gf_set) {
 167                 sta->no_ht_gf_set = 0;
 168                 hapd->iface->num_sta_ht_no_gf--;
 169         }
 170
 171         if (sta->no_ht_set) {
 172                 sta->no_ht_set = 0;
 173                 hapd->iface->num_sta_no_ht--;
 174         }
 175
 176         if (sta->ht_20mhz_set) {
 177                 sta->ht_20mhz_set = 0;
 178                 hapd->iface->num_sta_ht_20mhz--;
 179         }
 180
 181 #ifdef CONFIG_P2P
 182         if (sta->no_p2p_set) {
 183                 sta->no_p2p_set = 0;
 184                 hapd->num_sta_no_p2p--;
 185                 if (hapd->num_sta_no_p2p == 0)
 186                         hostapd_p2p_non_p2p_sta_disconnected(hapd);
 187         }
 188 #endif /* CONFIG_P2P */
 189
 190 #if defined(NEED_AP_MLME) && defined(CONFIG_IEEE80211N)
 191         if (hostapd_ht_operation_update(hapd->iface) > 0)
 192                 set_beacon++;
 193 #endif /* NEED_AP_MLME && CONFIG_IEEE80211N */
 194
 195         if (set_beacon)
 196                 ieee802_11_set_beacons(hapd->iface);
 197
 198         wpa_printf(MSG_DEBUG, "%s: cancel ap_handle_timer for " MACSTR,
 199                    __func__, MAC2STR(sta->addr));
 200         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 201         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 202         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 203         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 204
 205         ieee802_1x_free_station(sta);
 206         wpa_auth_sta_deinit(sta->wpa_sm);
 207         rsn_preauth_free_station(hapd, sta);
 208 #ifndef CONFIG_NO_RADIUS
 209         radius_client_flush_auth(hapd->radius, sta->addr);
 210 #endif /* CONFIG_NO_RADIUS */
 211
 212         os_free(sta->last_assoc_req);
 213         os_free(sta->challenge);
 214
 215 #ifdef CONFIG_IEEE80211W
 216         os_free(sta->sa_query_trans_id);
 217         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 218 #endif /* CONFIG_IEEE80211W */
 219
 220 #ifdef CONFIG_P2P
 221         p2p_group_notif_disassoc(hapd->p2p_group, sta->addr);
 222 #endif /* CONFIG_P2P */
 223
 224 #ifdef CONFIG_INTERWORKING
 225         if (sta->gas_dialog) {
 226                 int i;
 227                 for (i = 0; i < GAS_DIALOG_MAX; i++)
 228                         gas_serv_dialog_clear(&sta->gas_dialog[i]);
 229                 os_free(sta->gas_dialog);
 230         }
 231 #endif /* CONFIG_INTERWORKING */
 232
 233         wpabuf_free(sta->wps_ie);
 234         wpabuf_free(sta->p2p_ie);
 235
 236         os_free(sta->ht_capabilities);
 237         os_free(sta->psk);
 238
 239         os_free(sta);
 240 }
 241
 242
 243 void hostapd_free_stas(struct hostapd_data *hapd)
 244 {
 245         struct sta_info *sta, *prev;
 246
 247         sta = hapd->sta_list;
 248
 249         while (sta) {
 250                 prev = sta;
 251                 if (sta->flags & WLAN_STA_AUTH) {
 252                         mlme_deauthenticate_indication(
 253                                 hapd, sta, WLAN_REASON_UNSPECIFIED);
 254                 }
 255                 sta = sta->next;
 256                 wpa_printf(MSG_DEBUG, "Removing station " MACSTR,
 257                            MAC2STR(prev->addr));
 258                 ap_free_sta(hapd, prev);
 259         }
 260 }
 261
 262
 263 /**
 264  * ap_handle_timer - Per STA timer handler
 265  * @eloop_ctx: struct hostapd_data *
 266  * @timeout_ctx: struct sta_info *
 267  *
 268  * This function is called to check station activity and to remove inactive
 269  * stations.
 270  */
 271 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 272 {
 273         struct hostapd_data *hapd = eloop_ctx;
 274         struct sta_info *sta = timeout_ctx;
 275         unsigned long next_time = 0;
 276
 277         wpa_printf(MSG_DEBUG, "%s: " MACSTR " flags=0x%x timeout_next=%d",
 278                    __func__, MAC2STR(sta->addr), sta->flags,
 279                    sta->timeout_next);
 280         if (sta->timeout_next == STA_REMOVE) {
 281                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 282                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 283                                "local deauth request");
 284                 ap_free_sta(hapd, sta);
 285                 return;
 286         }
 287
 288         if ((sta->flags & WLAN_STA_ASSOC) &&
 289             (sta->timeout_next == STA_NULLFUNC ||
 290              sta->timeout_next == STA_DISASSOC)) {
 291                 int inactive_sec;
 292                 /*
 293                  * Add random value to timeout so that we don't end up bouncing
 294                  * all stations at the same time if we have lots of associated
 295                  * stations that are idle (but keep re-associating).
 296                  */
 297                 int fuzz = os_random() % 20;
 298                 inactive_sec = hostapd_drv_get_inact_sec(hapd, sta->addr);
 299                 if (inactive_sec == -1) {
 300                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 301                                 "Check inactivity: Could not "
 302                                 "get station info from kernel driver for "
 303                                 MACSTR, MAC2STR(sta->addr));
 304                         /*
 305                          * The driver may not support this functionality.
 306                          * Anyway, try again after the next inactivity timeout,
 307                          * but do not disconnect the station now.
 308                          */
 309                         next_time = hapd->conf->ap_max_inactivity + fuzz;
 310                 } else if (inactive_sec < hapd->conf->ap_max_inactivity &&
 311                            sta->flags & WLAN_STA_ASSOC) {
 312                         /* station activity detected; reset timeout state */
 313                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 314                                 "Station " MACSTR " has been active %is ago",
 315                                 MAC2STR(sta->addr), inactive_sec);
 316                         sta->timeout_next = STA_NULLFUNC;
 317                         next_time = hapd->conf->ap_max_inactivity + fuzz -
 318                                 inactive_sec;
 319                 } else {
 320                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 321                                 "Station " MACSTR " has been "
 322                                 "inactive too long: %d sec, max allowed: %d",
 323                                 MAC2STR(sta->addr), inactive_sec,
 324                                 hapd->conf->ap_max_inactivity);
 325
 326                         if (hapd->conf->skip_inactivity_poll)
 327                                 sta->timeout_next = STA_DISASSOC;
 328                 }
 329         }
 330
 331         if ((sta->flags & WLAN_STA_ASSOC) &&
 332             sta->timeout_next == STA_DISASSOC &&
 333             !(sta->flags & WLAN_STA_PENDING_POLL) &&
 334             !hapd->conf->skip_inactivity_poll) {
 335                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR
 336                         " has ACKed data poll", MAC2STR(sta->addr));
 337                 /* data nullfunc frame poll did not produce TX errors; assume
 338                  * station ACKed it */
 339                 sta->timeout_next = STA_NULLFUNC;
 340                 next_time = hapd->conf->ap_max_inactivity;
 341         }
 342
 343         if (next_time) {
 344                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 345                            "for " MACSTR " (%lu seconds)",
 346                            __func__, MAC2STR(sta->addr), next_time);
 347                 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
 348                                        sta);
 349                 return;
 350         }
 351
 352         if (sta->timeout_next == STA_NULLFUNC &&
 353             (sta->flags & WLAN_STA_ASSOC)) {
 354                 wpa_printf(MSG_DEBUG, "  Polling STA");
 355                 sta->flags |= WLAN_STA_PENDING_POLL;
 356                 hostapd_drv_poll_client(hapd, hapd->own_addr, sta->addr,
 357                                         sta->flags & WLAN_STA_WMM);
 358         } else if (sta->timeout_next != STA_REMOVE) {
 359                 int deauth = sta->timeout_next == STA_DEAUTH;
 360
 361                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 362                         "Timeout, sending %s info to STA " MACSTR,
 363                         deauth ? "deauthentication" : "disassociation",
 364                         MAC2STR(sta->addr));
 365
 366                 if (deauth) {
 367                         hostapd_drv_sta_deauth(
 368                                 hapd, sta->addr,
 369                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
 370                 } else {
 371                         hostapd_drv_sta_disassoc(
 372                                 hapd, sta->addr,
 373                                 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 374                 }
 375         }
 376
 377         switch (sta->timeout_next) {
 378         case STA_NULLFUNC:
 379                 sta->timeout_next = STA_DISASSOC;
 380                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 381                            "for " MACSTR " (%d seconds - AP_DISASSOC_DELAY)",
 382                            __func__, MAC2STR(sta->addr), AP_DISASSOC_DELAY);
 383                 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
 384                                        hapd, sta);
 385                 break;
 386         case STA_DISASSOC:
 387                 ap_sta_set_authorized(hapd, sta, 0);
 388                 sta->flags &= ~WLAN_STA_ASSOC;
 389                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 390                 if (!sta->acct_terminate_cause)
 391                         sta->acct_terminate_cause =
 392                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 393                 accounting_sta_stop(hapd, sta);
 394                 ieee802_1x_free_station(sta);
 395                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 396                                HOSTAPD_LEVEL_INFO, "disassociated due to "
 397                                "inactivity");
 398                 sta->timeout_next = STA_DEAUTH;
 399                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 400                            "for " MACSTR " (%d seconds - AP_DEAUTH_DELAY)",
 401                            __func__, MAC2STR(sta->addr), AP_DEAUTH_DELAY);
 402                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
 403                                        hapd, sta);
 404                 mlme_disassociate_indication(
 405                         hapd, sta, WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 406                 break;
 407         case STA_DEAUTH:
 408         case STA_REMOVE:
 409                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 410                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 411                                "inactivity (timer DEAUTH/REMOVE)");
 412                 if (!sta->acct_terminate_cause)
 413                         sta->acct_terminate_cause =
 414                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 415                 mlme_deauthenticate_indication(
 416                         hapd, sta,
 417                         WLAN_REASON_PREV_AUTH_NOT_VALID);
 418                 ap_free_sta(hapd, sta);
 419                 break;
 420         }
 421 }
 422
 423
 424 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx)
 425 {
 426         struct hostapd_data *hapd = eloop_ctx;
 427         struct sta_info *sta = timeout_ctx;
 428         u8 addr[ETH_ALEN];
 429
 430         if (!(sta->flags & WLAN_STA_AUTH)) {
 431                 if (sta->flags & WLAN_STA_GAS) {
 432                         wpa_printf(MSG_DEBUG, "GAS: Remove temporary STA "
 433                                    "entry " MACSTR, MAC2STR(sta->addr));
 434                         ap_free_sta(hapd, sta);
 435                 }
 436                 return;
 437         }
 438
 439         mlme_deauthenticate_indication(hapd, sta,
 440                                        WLAN_REASON_PREV_AUTH_NOT_VALID);
 441         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 442                        HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 443                        "session timeout");
 444         sta->acct_terminate_cause =
 445                 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT;
 446         os_memcpy(addr, sta->addr, ETH_ALEN);
 447         ap_free_sta(hapd, sta);
 448         hostapd_drv_sta_deauth(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
 449 }
 450
 451
 452 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 453                             u32 session_timeout)
 454 {
 455         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 456                        HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d "
 457                        "seconds", session_timeout);
 458         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 459         eloop_register_timeout(session_timeout, 0, ap_handle_session_timer,
 460                                hapd, sta);
 461 }
 462
 463
 464 void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 465 {
 466         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 467 }
 468
 469
 470 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr)
 471 {
 472         struct sta_info *sta;
 473
 474         sta = ap_get_sta(hapd, addr);
 475         if (sta)
 476                 return sta;
 477
 478         wpa_printf(MSG_DEBUG, "  New STA");
 479         if (hapd->num_sta >= hapd->conf->max_num_sta) {
 480                 /* FIX: might try to remove some old STAs first? */
 481                 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)",
 482                            hapd->num_sta, hapd->conf->max_num_sta);
 483                 return NULL;
 484         }
 485
 486         sta = os_zalloc(sizeof(struct sta_info));
 487         if (sta == NULL) {
 488                 wpa_printf(MSG_ERROR, "malloc failed");
 489                 return NULL;
 490         }
 491         sta->acct_interim_interval = hapd->conf->acct_interim_interval;
 492
 493         /* initialize STA info data */
 494         wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 495                    "for " MACSTR " (%d seconds - ap_max_inactivity)",
 496                    __func__, MAC2STR(addr),
 497                    hapd->conf->ap_max_inactivity);
 498         eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 499                                ap_handle_timer, hapd, sta);
 500         os_memcpy(sta->addr, addr, ETH_ALEN);
 501         sta->next = hapd->sta_list;
 502         hapd->sta_list = sta;
 503         hapd->num_sta++;
 504         ap_sta_hash_add(hapd, sta);
 505         sta->ssid = &hapd->conf->ssid;
 506         ap_sta_remove_in_other_bss(hapd, sta);
 507
 508         return sta;
 509 }
 510
 511
 512 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 513 {
 514         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 515
 516         wpa_printf(MSG_DEBUG, "Removing STA " MACSTR " from kernel driver",
 517                    MAC2STR(sta->addr));
 518         if (hostapd_drv_sta_remove(hapd, sta->addr) &&
 519             sta->flags & WLAN_STA_ASSOC) {
 520                 wpa_printf(MSG_DEBUG, "Could not remove station " MACSTR
 521                            " from kernel driver.", MAC2STR(sta->addr));
 522                 return -1;
 523         }
 524         return 0;
 525 }
 526
 527
 528 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
 529                                        struct sta_info *sta)
 530 {
 531         struct hostapd_iface *iface = hapd->iface;
 532         size_t i;
 533
 534         for (i = 0; i < iface->num_bss; i++) {
 535                 struct hostapd_data *bss = iface->bss[i];
 536                 struct sta_info *sta2;
 537                 /* bss should always be set during operation, but it may be
 538                  * NULL during reconfiguration. Assume the STA is not
 539                  * associated to another BSS in that case to avoid NULL pointer
 540                  * dereferences. */
 541                 if (bss == hapd || bss == NULL)
 542                         continue;
 543                 sta2 = ap_get_sta(bss, sta->addr);
 544                 if (!sta2)
 545                         continue;
 546
 547                 ap_sta_disconnect(bss, sta2, sta2->addr,
 548                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
 549         }
 550 }
 551
 552
 553 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 554 {
 555         struct hostapd_data *hapd = eloop_ctx;
 556         struct sta_info *sta = timeout_ctx;
 557
 558         ap_sta_remove(hapd, sta);
 559         mlme_disassociate_indication(hapd, sta, sta->disassoc_reason);
 560 }
 561
 562
 563 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 564                          u16 reason)
 565 {
 566         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 567                    hapd->conf->iface, MAC2STR(sta->addr));
 568         sta->flags &= ~WLAN_STA_ASSOC;
 569         ap_sta_set_authorized(hapd, sta, 0);
 570         sta->timeout_next = STA_DEAUTH;
 571         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 572                    "for " MACSTR " (%d seconds - "
 573                    "AP_MAX_INACTIVITY_AFTER_DISASSOC)",
 574                    __func__, MAC2STR(sta->addr),
 575                    AP_MAX_INACTIVITY_AFTER_DISASSOC);
 576         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 577         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 578                                ap_handle_timer, hapd, sta);
 579         accounting_sta_stop(hapd, sta);
 580         ieee802_1x_free_station(sta);
 581
 582         sta->disassoc_reason = reason;
 583         sta->flags |= WLAN_STA_PENDING_DISASSOC_CB;
 584         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 585         eloop_register_timeout(hapd->iface->drv_flags &
 586                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 587                                ap_sta_disassoc_cb_timeout, hapd, sta);
 588 }
 589
 590
 591 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 592 {
 593         struct hostapd_data *hapd = eloop_ctx;
 594         struct sta_info *sta = timeout_ctx;
 595
 596         ap_sta_remove(hapd, sta);
 597         mlme_deauthenticate_indication(hapd, sta, sta->deauth_reason);
 598 }
 599
 600
 601 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 602                            u16 reason)
 603 {
 604         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 605                    hapd->conf->iface, MAC2STR(sta->addr));
 606         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 607         ap_sta_set_authorized(hapd, sta, 0);
 608         sta->timeout_next = STA_REMOVE;
 609         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 610                    "for " MACSTR " (%d seconds - "
 611                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
 612                    __func__, MAC2STR(sta->addr),
 613                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
 614         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 615         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 616                                ap_handle_timer, hapd, sta);
 617         accounting_sta_stop(hapd, sta);
 618         ieee802_1x_free_station(sta);
 619
 620         sta->deauth_reason = reason;
 621         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 622         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 623         eloop_register_timeout(hapd->iface->drv_flags &
 624                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 625                                ap_sta_deauth_cb_timeout, hapd, sta);
 626 }
 627
 628
 629 #ifdef CONFIG_WPS
 630 int ap_sta_wps_cancel(struct hostapd_data *hapd,
 631                       struct sta_info *sta, void *ctx)
 632 {
 633         if (sta && (sta->flags & WLAN_STA_WPS)) {
 634                 ap_sta_deauthenticate(hapd, sta,
 635                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 636                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 637                            __func__, MAC2STR(sta->addr));
 638                 return 1;
 639         }
 640
 641         return 0;
 642 }
 643 #endif /* CONFIG_WPS */
 644
 645
 646 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 647                      int old_vlanid)
 648 {
 649 #ifndef CONFIG_NO_VLAN
 650         const char *iface;
 651         struct hostapd_vlan *vlan = NULL;
 652         int ret;
 653
 654         /*
 655          * Do not proceed furthur if the vlan id remains same. We do not want
 656          * duplicate dynamic vlan entries.
 657          */
 658         if (sta->vlan_id == old_vlanid)
 659                 return 0;
 660
 661         /*
 662          * During 1x reauth, if the vlan id changes, then remove the old id and
 663          * proceed furthur to add the new one.
 664          */
 665         if (old_vlanid > 0)
 666                 vlan_remove_dynamic(hapd, old_vlanid);
 667
 668         iface = hapd->conf->iface;
 669         if (sta->ssid->vlan[0])
 670                 iface = sta->ssid->vlan;
 671
 672         if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
 673                 sta->vlan_id = 0;
 674         else if (sta->vlan_id > 0) {
 675                 vlan = hapd->conf->vlan;
 676                 while (vlan) {
 677                         if (vlan->vlan_id == sta->vlan_id ||
 678                             vlan->vlan_id == VLAN_ID_WILDCARD) {
 679                                 iface = vlan->ifname;
 680                                 break;
 681                         }
 682                         vlan = vlan->next;
 683                 }
 684         }
 685
 686         if (sta->vlan_id > 0 && vlan == NULL) {
 687                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 688                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
 689                                "binding station to (vlan_id=%d)",
 690                                sta->vlan_id);
 691                 return -1;
 692         } else if (sta->vlan_id > 0 && vlan->vlan_id == VLAN_ID_WILDCARD) {
 693                 vlan = vlan_add_dynamic(hapd, vlan, sta->vlan_id);
 694                 if (vlan == NULL) {
 695                         hostapd_logger(hapd, sta->addr,
 696                                        HOSTAPD_MODULE_IEEE80211,
 697                                        HOSTAPD_LEVEL_DEBUG, "could not add "
 698                                        "dynamic VLAN interface for vlan_id=%d",
 699                                        sta->vlan_id);
 700                         return -1;
 701                 }
 702
 703                 iface = vlan->ifname;
 704                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 705                         hostapd_logger(hapd, sta->addr,
 706                                        HOSTAPD_MODULE_IEEE80211,
 707                                        HOSTAPD_LEVEL_DEBUG, "could not "
 708                                        "configure encryption for dynamic VLAN "
 709                                        "interface for vlan_id=%d",
 710                                        sta->vlan_id);
 711                 }
 712
 713                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 714                                HOSTAPD_LEVEL_DEBUG, "added new dynamic VLAN "
 715                                "interface '%s'", iface);
 716         } else if (vlan && vlan->vlan_id == sta->vlan_id) {
 717                 if (sta->vlan_id > 0) {
 718                         vlan->dynamic_vlan++;
 719                         hostapd_logger(hapd, sta->addr,
 720                                        HOSTAPD_MODULE_IEEE80211,
 721                                        HOSTAPD_LEVEL_DEBUG, "updated existing "
 722                                        "dynamic VLAN interface '%s'", iface);
 723                 }
 724
 725                 /*
 726                  * Update encryption configuration for statically generated
 727                  * VLAN interface. This is only used for static WEP
 728                  * configuration for the case where hostapd did not yet know
 729                  * which keys are to be used when the interface was added.
 730                  */
 731                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 732                         hostapd_logger(hapd, sta->addr,
 733                                        HOSTAPD_MODULE_IEEE80211,
 734                                        HOSTAPD_LEVEL_DEBUG, "could not "
 735                                        "configure encryption for VLAN "
 736                                        "interface for vlan_id=%d",
 737                                        sta->vlan_id);
 738                 }
 739         }
 740
 741         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 742                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
 743                        "'%s'", iface);
 744
 745         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
 746                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
 747
 748         ret = hostapd_drv_set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
 749         if (ret < 0) {
 750                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 751                                HOSTAPD_LEVEL_DEBUG, "could not bind the STA "
 752                                "entry to vlan_id=%d", sta->vlan_id);
 753         }
 754         return ret;
 755 #else /* CONFIG_NO_VLAN */
 756         return 0;
 757 #endif /* CONFIG_NO_VLAN */
 758 }
 759
 760
 761 #ifdef CONFIG_IEEE80211W
 762
 763 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 764 {
 765         u32 tu;
 766         struct os_time now, passed;
 767         os_get_time(&now);
 768         os_time_sub(&now, &sta->sa_query_start, &passed);
 769         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 770         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
 771                 hostapd_logger(hapd, sta->addr,
 772                                HOSTAPD_MODULE_IEEE80211,
 773                                HOSTAPD_LEVEL_DEBUG,
 774                                "association SA Query timed out");
 775                 sta->sa_query_timed_out = 1;
 776                 os_free(sta->sa_query_trans_id);
 777                 sta->sa_query_trans_id = NULL;
 778                 sta->sa_query_count = 0;
 779                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 780                 return 1;
 781         }
 782
 783         return 0;
 784 }
 785
 786
 787 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
 788 {
 789         struct hostapd_data *hapd = eloop_ctx;
 790         struct sta_info *sta = timeout_ctx;
 791         unsigned int timeout, sec, usec;
 792         u8 *trans_id, *nbuf;
 793
 794         if (sta->sa_query_count > 0 &&
 795             ap_check_sa_query_timeout(hapd, sta))
 796                 return;
 797
 798         nbuf = os_realloc(sta->sa_query_trans_id,
 799                           (sta->sa_query_count + 1) * WLAN_SA_QUERY_TR_ID_LEN);
 800         if (nbuf == NULL)
 801                 return;
 802         if (sta->sa_query_count == 0) {
 803                 /* Starting a new SA Query procedure */
 804                 os_get_time(&sta->sa_query_start);
 805         }
 806         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
 807         sta->sa_query_trans_id = nbuf;
 808         sta->sa_query_count++;
 809
 810         os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 811
 812         timeout = hapd->conf->assoc_sa_query_retry_timeout;
 813         sec = ((timeout / 1000) * 1024) / 1000;
 814         usec = (timeout % 1000) * 1024;
 815         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
 816
 817         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 818                        HOSTAPD_LEVEL_DEBUG,
 819                        "association SA Query attempt %d", sta->sa_query_count);
 820
 821 #ifdef NEED_AP_MLME
 822         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
 823 #endif /* NEED_AP_MLME */
 824 }
 825
 826
 827 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 828 {
 829         ap_sa_query_timer(hapd, sta);
 830 }
 831
 832
 833 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 834 {
 835         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 836         os_free(sta->sa_query_trans_id);
 837         sta->sa_query_trans_id = NULL;
 838         sta->sa_query_count = 0;
 839 }
 840
 841 #endif /* CONFIG_IEEE80211W */
 842
 843
 844 void ap_sta_set_authorized(struct hostapd_data *hapd, struct sta_info *sta,
 845                            int authorized)
 846 {
 847         const u8 *dev_addr = NULL;
 848 #ifdef CONFIG_P2P
 849         u8 addr[ETH_ALEN];
 850 #endif /* CONFIG_P2P */
 851
 852         if (!!authorized == !!(sta->flags & WLAN_STA_AUTHORIZED))
 853                 return;
 854
 855 #ifdef CONFIG_P2P
 856         if (hapd->p2p_group == NULL) {
 857                 if (sta->p2p_ie != NULL &&
 858                     p2p_parse_dev_addr_in_p2p_ie(sta->p2p_ie, addr) == 0)
 859                         dev_addr = addr;
 860         } else
 861                 dev_addr = p2p_group_get_dev_addr(hapd->p2p_group, sta->addr);
 862 #endif /* CONFIG_P2P */
 863
 864         if (authorized) {
 865                 if (dev_addr)
 866                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 867                                 MACSTR " p2p_dev_addr=" MACSTR,
 868                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 869                 else
 870                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 871                                 MACSTR, MAC2STR(sta->addr));
 872                 if (hapd->msg_ctx_parent &&
 873                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 874                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 875                                 AP_STA_CONNECTED MACSTR " p2p_dev_addr="
 876                                 MACSTR,
 877                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 878                 else if (hapd->msg_ctx_parent &&
 879                          hapd->msg_ctx_parent != hapd->msg_ctx)
 880                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 881                                 AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
 882
 883                 sta->flags |= WLAN_STA_AUTHORIZED;
 884         } else {
 885                 if (dev_addr)
 886                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 887                                 MACSTR " p2p_dev_addr=" MACSTR,
 888                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 889                 else
 890                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 891                                 MACSTR, MAC2STR(sta->addr));
 892                 if (hapd->msg_ctx_parent &&
 893                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 894                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 895                                 AP_STA_DISCONNECTED MACSTR " p2p_dev_addr="
 896                                 MACSTR, MAC2STR(sta->addr), MAC2STR(dev_addr));
 897                 else if (hapd->msg_ctx_parent &&
 898                          hapd->msg_ctx_parent != hapd->msg_ctx)
 899                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 900                                 AP_STA_DISCONNECTED MACSTR,
 901                                 MAC2STR(sta->addr));
 902                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 903         }
 904
 905         if (hapd->sta_authorized_cb)
 906                 hapd->sta_authorized_cb(hapd->sta_authorized_cb_ctx,
 907                                         sta->addr, authorized, dev_addr);
 908 }
 909
 910
 911 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
 912                        const u8 *addr, u16 reason)
 913 {
 914
 915         if (sta == NULL && addr)
 916                 sta = ap_get_sta(hapd, addr);
 917
 918         if (addr)
 919                 hostapd_drv_sta_deauth(hapd, addr, reason);
 920
 921         if (sta == NULL)
 922                 return;
 923         ap_sta_set_authorized(hapd, sta, 0);
 924         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
 925         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 926         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 927         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 928                    "for " MACSTR " (%d seconds - "
 929                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
 930                    __func__, MAC2STR(sta->addr),
 931                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
 932         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 933         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 934                                ap_handle_timer, hapd, sta);
 935         sta->timeout_next = STA_REMOVE;
 936
 937         sta->deauth_reason = reason;
 938         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 939         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 940         eloop_register_timeout(hapd->iface->drv_flags &
 941                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 942                                ap_sta_deauth_cb_timeout, hapd, sta);
 943 }
 944
 945
 946 void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta)
 947 {
 948         if (!(sta->flags & WLAN_STA_PENDING_DEAUTH_CB)) {
 949                 wpa_printf(MSG_DEBUG, "Ignore deauth cb for test frame");
 950                 return;
 951         }
 952         sta->flags &= ~WLAN_STA_PENDING_DEAUTH_CB;
 953         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 954         ap_sta_deauth_cb_timeout(hapd, sta);
 955 }
 956
 957
 958 void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta)
 959 {
 960         if (!(sta->flags & WLAN_STA_PENDING_DISASSOC_CB)) {
 961                 wpa_printf(MSG_DEBUG, "Ignore disassoc cb for test frame");
 962                 return;
 963         }
 964         sta->flags &= ~WLAN_STA_PENDING_DISASSOC_CB;
 965         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 966         ap_sta_disassoc_cb_timeout(hapd, sta);
 967 }