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