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         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 199         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 200         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 201         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 202
 203         ieee802_1x_free_station(sta);
 204         wpa_auth_sta_deinit(sta->wpa_sm);
 205         rsn_preauth_free_station(hapd, sta);
 206 #ifndef CONFIG_NO_RADIUS
 207         radius_client_flush_auth(hapd->radius, sta->addr);
 208 #endif /* CONFIG_NO_RADIUS */
 209
 210         os_free(sta->last_assoc_req);
 211         os_free(sta->challenge);
 212
 213 #ifdef CONFIG_IEEE80211W
 214         os_free(sta->sa_query_trans_id);
 215         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 216 #endif /* CONFIG_IEEE80211W */
 217
 218 #ifdef CONFIG_P2P
 219         p2p_group_notif_disassoc(hapd->p2p_group, sta->addr);
 220 #endif /* CONFIG_P2P */
 221
 222 #ifdef CONFIG_INTERWORKING
 223         if (sta->gas_dialog) {
 224                 int i;
 225                 for (i = 0; i < GAS_DIALOG_MAX; i++)
 226                         gas_serv_dialog_clear(&sta->gas_dialog[i]);
 227                 os_free(sta->gas_dialog);
 228         }
 229 #endif /* CONFIG_INTERWORKING */
 230
 231         wpabuf_free(sta->wps_ie);
 232         wpabuf_free(sta->p2p_ie);
 233
 234         os_free(sta->ht_capabilities);
 235         os_free(sta->psk);
 236
 237         os_free(sta);
 238 }
 239
 240
 241 void hostapd_free_stas(struct hostapd_data *hapd)
 242 {
 243         struct sta_info *sta, *prev;
 244
 245         sta = hapd->sta_list;
 246
 247         while (sta) {
 248                 prev = sta;
 249                 if (sta->flags & WLAN_STA_AUTH) {
 250                         mlme_deauthenticate_indication(
 251                                 hapd, sta, WLAN_REASON_UNSPECIFIED);
 252                 }
 253                 sta = sta->next;
 254                 wpa_printf(MSG_DEBUG, "Removing station " MACSTR,
 255                            MAC2STR(prev->addr));
 256                 ap_free_sta(hapd, prev);
 257         }
 258 }
 259
 260
 261 /**
 262  * ap_handle_timer - Per STA timer handler
 263  * @eloop_ctx: struct hostapd_data *
 264  * @timeout_ctx: struct sta_info *
 265  *
 266  * This function is called to check station activity and to remove inactive
 267  * stations.
 268  */
 269 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 270 {
 271         struct hostapd_data *hapd = eloop_ctx;
 272         struct sta_info *sta = timeout_ctx;
 273         unsigned long next_time = 0;
 274
 275         if (sta->timeout_next == STA_REMOVE) {
 276                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 277                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 278                                "local deauth request");
 279                 ap_free_sta(hapd, sta);
 280                 return;
 281         }
 282
 283         if ((sta->flags & WLAN_STA_ASSOC) &&
 284             (sta->timeout_next == STA_NULLFUNC ||
 285              sta->timeout_next == STA_DISASSOC)) {
 286                 int inactive_sec;
 287                 inactive_sec = hostapd_drv_get_inact_sec(hapd, sta->addr);
 288                 if (inactive_sec == -1) {
 289                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 290                                 "Check inactivity: Could not "
 291                                 "get station info from kernel driver for "
 292                                 MACSTR, MAC2STR(sta->addr));
 293                         /*
 294                          * The driver may not support this functionality.
 295                          * Anyway, try again after the next inactivity timeout,
 296                          * but do not disconnect the station now.
 297                          */
 298                         next_time = hapd->conf->ap_max_inactivity;
 299                 } else if (inactive_sec < hapd->conf->ap_max_inactivity &&
 300                            sta->flags & WLAN_STA_ASSOC) {
 301                         /* station activity detected; reset timeout state */
 302                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 303                                 "Station " MACSTR " has been active %is ago",
 304                                 MAC2STR(sta->addr), inactive_sec);
 305                         sta->timeout_next = STA_NULLFUNC;
 306                         next_time = hapd->conf->ap_max_inactivity -
 307                                 inactive_sec;
 308                 } else {
 309                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 310                                 "Station " MACSTR " has been "
 311                                 "inactive too long: %d sec, max allowed: %d",
 312                                 MAC2STR(sta->addr), inactive_sec,
 313                                 hapd->conf->ap_max_inactivity);
 314
 315                         if (hapd->conf->skip_inactivity_poll)
 316                                 sta->timeout_next = STA_DISASSOC;
 317                 }
 318         }
 319
 320         if ((sta->flags & WLAN_STA_ASSOC) &&
 321             sta->timeout_next == STA_DISASSOC &&
 322             !(sta->flags & WLAN_STA_PENDING_POLL) &&
 323             !hapd->conf->skip_inactivity_poll) {
 324                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR
 325                         " has ACKed data poll", MAC2STR(sta->addr));
 326                 /* data nullfunc frame poll did not produce TX errors; assume
 327                  * station ACKed it */
 328                 sta->timeout_next = STA_NULLFUNC;
 329                 next_time = hapd->conf->ap_max_inactivity;
 330         }
 331
 332         if (next_time) {
 333                 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
 334                                        sta);
 335                 return;
 336         }
 337
 338         if (sta->timeout_next == STA_NULLFUNC &&
 339             (sta->flags & WLAN_STA_ASSOC)) {
 340                 wpa_printf(MSG_DEBUG, "  Polling STA");
 341                 sta->flags |= WLAN_STA_PENDING_POLL;
 342                 hostapd_drv_poll_client(hapd, hapd->own_addr, sta->addr,
 343                                         sta->flags & WLAN_STA_WMM);
 344         } else if (sta->timeout_next != STA_REMOVE) {
 345                 int deauth = sta->timeout_next == STA_DEAUTH;
 346
 347                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 348                         "Timeout, sending %s info to STA " MACSTR,
 349                         deauth ? "deauthentication" : "disassociation",
 350                         MAC2STR(sta->addr));
 351
 352                 if (deauth) {
 353                         hostapd_drv_sta_deauth(
 354                                 hapd, sta->addr,
 355                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
 356                 } else {
 357                         hostapd_drv_sta_disassoc(
 358                                 hapd, sta->addr,
 359                                 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 360                 }
 361         }
 362
 363         switch (sta->timeout_next) {
 364         case STA_NULLFUNC:
 365                 sta->timeout_next = STA_DISASSOC;
 366                 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
 367                                        hapd, sta);
 368                 break;
 369         case STA_DISASSOC:
 370                 ap_sta_set_authorized(hapd, sta, 0);
 371                 sta->flags &= ~WLAN_STA_ASSOC;
 372                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 373                 if (!sta->acct_terminate_cause)
 374                         sta->acct_terminate_cause =
 375                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 376                 accounting_sta_stop(hapd, sta);
 377                 ieee802_1x_free_station(sta);
 378                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 379                                HOSTAPD_LEVEL_INFO, "disassociated due to "
 380                                "inactivity");
 381                 sta->timeout_next = STA_DEAUTH;
 382                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
 383                                        hapd, sta);
 384                 mlme_disassociate_indication(
 385                         hapd, sta, WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 386                 break;
 387         case STA_DEAUTH:
 388         case STA_REMOVE:
 389                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 390                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 391                                "inactivity (timer DEAUTH/REMOVE)");
 392                 if (!sta->acct_terminate_cause)
 393                         sta->acct_terminate_cause =
 394                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 395                 mlme_deauthenticate_indication(
 396                         hapd, sta,
 397                         WLAN_REASON_PREV_AUTH_NOT_VALID);
 398                 ap_free_sta(hapd, sta);
 399                 break;
 400         }
 401 }
 402
 403
 404 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx)
 405 {
 406         struct hostapd_data *hapd = eloop_ctx;
 407         struct sta_info *sta = timeout_ctx;
 408         u8 addr[ETH_ALEN];
 409
 410         if (!(sta->flags & WLAN_STA_AUTH)) {
 411                 if (sta->flags & WLAN_STA_GAS) {
 412                         wpa_printf(MSG_DEBUG, "GAS: Remove temporary STA "
 413                                    "entry " MACSTR, MAC2STR(sta->addr));
 414                         ap_free_sta(hapd, sta);
 415                 }
 416                 return;
 417         }
 418
 419         mlme_deauthenticate_indication(hapd, sta,
 420                                        WLAN_REASON_PREV_AUTH_NOT_VALID);
 421         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 422                        HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 423                        "session timeout");
 424         sta->acct_terminate_cause =
 425                 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT;
 426         os_memcpy(addr, sta->addr, ETH_ALEN);
 427         ap_free_sta(hapd, sta);
 428         hostapd_drv_sta_deauth(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
 429 }
 430
 431
 432 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 433                             u32 session_timeout)
 434 {
 435         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 436                        HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d "
 437                        "seconds", session_timeout);
 438         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 439         eloop_register_timeout(session_timeout, 0, ap_handle_session_timer,
 440                                hapd, sta);
 441 }
 442
 443
 444 void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 445 {
 446         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 447 }
 448
 449
 450 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr)
 451 {
 452         struct sta_info *sta;
 453
 454         sta = ap_get_sta(hapd, addr);
 455         if (sta)
 456                 return sta;
 457
 458         wpa_printf(MSG_DEBUG, "  New STA");
 459         if (hapd->num_sta >= hapd->conf->max_num_sta) {
 460                 /* FIX: might try to remove some old STAs first? */
 461                 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)",
 462                            hapd->num_sta, hapd->conf->max_num_sta);
 463                 return NULL;
 464         }
 465
 466         sta = os_zalloc(sizeof(struct sta_info));
 467         if (sta == NULL) {
 468                 wpa_printf(MSG_ERROR, "malloc failed");
 469                 return NULL;
 470         }
 471         sta->acct_interim_interval = hapd->conf->acct_interim_interval;
 472
 473         /* initialize STA info data */
 474         eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 475                                ap_handle_timer, hapd, sta);
 476         os_memcpy(sta->addr, addr, ETH_ALEN);
 477         sta->next = hapd->sta_list;
 478         hapd->sta_list = sta;
 479         hapd->num_sta++;
 480         ap_sta_hash_add(hapd, sta);
 481         sta->ssid = &hapd->conf->ssid;
 482         ap_sta_remove_in_other_bss(hapd, sta);
 483
 484         return sta;
 485 }
 486
 487
 488 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 489 {
 490         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 491
 492         wpa_printf(MSG_DEBUG, "Removing STA " MACSTR " from kernel driver",
 493                    MAC2STR(sta->addr));
 494         if (hostapd_drv_sta_remove(hapd, sta->addr) &&
 495             sta->flags & WLAN_STA_ASSOC) {
 496                 wpa_printf(MSG_DEBUG, "Could not remove station " MACSTR
 497                            " from kernel driver.", MAC2STR(sta->addr));
 498                 return -1;
 499         }
 500         return 0;
 501 }
 502
 503
 504 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
 505                                        struct sta_info *sta)
 506 {
 507         struct hostapd_iface *iface = hapd->iface;
 508         size_t i;
 509
 510         for (i = 0; i < iface->num_bss; i++) {
 511                 struct hostapd_data *bss = iface->bss[i];
 512                 struct sta_info *sta2;
 513                 /* bss should always be set during operation, but it may be
 514                  * NULL during reconfiguration. Assume the STA is not
 515                  * associated to another BSS in that case to avoid NULL pointer
 516                  * dereferences. */
 517                 if (bss == hapd || bss == NULL)
 518                         continue;
 519                 sta2 = ap_get_sta(bss, sta->addr);
 520                 if (!sta2)
 521                         continue;
 522
 523                 ap_sta_disconnect(bss, sta2, sta2->addr,
 524                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
 525         }
 526 }
 527
 528
 529 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 530 {
 531         struct hostapd_data *hapd = eloop_ctx;
 532         struct sta_info *sta = timeout_ctx;
 533
 534         ap_sta_remove(hapd, sta);
 535         mlme_disassociate_indication(hapd, sta, sta->disassoc_reason);
 536 }
 537
 538
 539 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 540                          u16 reason)
 541 {
 542         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 543                    hapd->conf->iface, MAC2STR(sta->addr));
 544         sta->flags &= ~WLAN_STA_ASSOC;
 545         ap_sta_set_authorized(hapd, sta, 0);
 546         sta->timeout_next = STA_DEAUTH;
 547         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 548         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 549                                ap_handle_timer, hapd, sta);
 550         accounting_sta_stop(hapd, sta);
 551         ieee802_1x_free_station(sta);
 552
 553         sta->disassoc_reason = reason;
 554         sta->flags |= WLAN_STA_PENDING_DISASSOC_CB;
 555         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 556         eloop_register_timeout(hapd->iface->drv_flags &
 557                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 558                                ap_sta_disassoc_cb_timeout, hapd, sta);
 559 }
 560
 561
 562 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 563 {
 564         struct hostapd_data *hapd = eloop_ctx;
 565         struct sta_info *sta = timeout_ctx;
 566
 567         ap_sta_remove(hapd, sta);
 568         mlme_deauthenticate_indication(hapd, sta, sta->deauth_reason);
 569 }
 570
 571
 572 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 573                            u16 reason)
 574 {
 575         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 576                    hapd->conf->iface, MAC2STR(sta->addr));
 577         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 578         ap_sta_set_authorized(hapd, sta, 0);
 579         sta->timeout_next = STA_REMOVE;
 580         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 581         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 582                                ap_handle_timer, hapd, sta);
 583         accounting_sta_stop(hapd, sta);
 584         ieee802_1x_free_station(sta);
 585
 586         sta->deauth_reason = reason;
 587         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 588         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 589         eloop_register_timeout(hapd->iface->drv_flags &
 590                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 591                                ap_sta_deauth_cb_timeout, hapd, sta);
 592 }
 593
 594
 595 #ifdef CONFIG_WPS
 596 int ap_sta_wps_cancel(struct hostapd_data *hapd,
 597                       struct sta_info *sta, void *ctx)
 598 {
 599         if (sta && (sta->flags & WLAN_STA_WPS)) {
 600                 ap_sta_deauthenticate(hapd, sta,
 601                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 602                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 603                            __func__, MAC2STR(sta->addr));
 604                 return 1;
 605         }
 606
 607         return 0;
 608 }
 609 #endif /* CONFIG_WPS */
 610
 611
 612 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 613                      int old_vlanid)
 614 {
 615 #ifndef CONFIG_NO_VLAN
 616         const char *iface;
 617         struct hostapd_vlan *vlan = NULL;
 618         int ret;
 619
 620         /*
 621          * Do not proceed furthur if the vlan id remains same. We do not want
 622          * duplicate dynamic vlan entries.
 623          */
 624         if (sta->vlan_id == old_vlanid)
 625                 return 0;
 626
 627         /*
 628          * During 1x reauth, if the vlan id changes, then remove the old id and
 629          * proceed furthur to add the new one.
 630          */
 631         if (old_vlanid > 0)
 632                 vlan_remove_dynamic(hapd, old_vlanid);
 633
 634         iface = hapd->conf->iface;
 635         if (sta->ssid->vlan[0])
 636                 iface = sta->ssid->vlan;
 637
 638         if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
 639                 sta->vlan_id = 0;
 640         else if (sta->vlan_id > 0) {
 641                 vlan = hapd->conf->vlan;
 642                 while (vlan) {
 643                         if (vlan->vlan_id == sta->vlan_id ||
 644                             vlan->vlan_id == VLAN_ID_WILDCARD) {
 645                                 iface = vlan->ifname;
 646                                 break;
 647                         }
 648                         vlan = vlan->next;
 649                 }
 650         }
 651
 652         if (sta->vlan_id > 0 && vlan == NULL) {
 653                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 654                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
 655                                "binding station to (vlan_id=%d)",
 656                                sta->vlan_id);
 657                 return -1;
 658         } else if (sta->vlan_id > 0 && vlan->vlan_id == VLAN_ID_WILDCARD) {
 659                 vlan = vlan_add_dynamic(hapd, vlan, sta->vlan_id);
 660                 if (vlan == NULL) {
 661                         hostapd_logger(hapd, sta->addr,
 662                                        HOSTAPD_MODULE_IEEE80211,
 663                                        HOSTAPD_LEVEL_DEBUG, "could not add "
 664                                        "dynamic VLAN interface for vlan_id=%d",
 665                                        sta->vlan_id);
 666                         return -1;
 667                 }
 668
 669                 iface = vlan->ifname;
 670                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 671                         hostapd_logger(hapd, sta->addr,
 672                                        HOSTAPD_MODULE_IEEE80211,
 673                                        HOSTAPD_LEVEL_DEBUG, "could not "
 674                                        "configure encryption for dynamic VLAN "
 675                                        "interface for vlan_id=%d",
 676                                        sta->vlan_id);
 677                 }
 678
 679                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 680                                HOSTAPD_LEVEL_DEBUG, "added new dynamic VLAN "
 681                                "interface '%s'", iface);
 682         } else if (vlan && vlan->vlan_id == sta->vlan_id) {
 683                 if (sta->vlan_id > 0) {
 684                         vlan->dynamic_vlan++;
 685                         hostapd_logger(hapd, sta->addr,
 686                                        HOSTAPD_MODULE_IEEE80211,
 687                                        HOSTAPD_LEVEL_DEBUG, "updated existing "
 688                                        "dynamic VLAN interface '%s'", iface);
 689                 }
 690
 691                 /*
 692                  * Update encryption configuration for statically generated
 693                  * VLAN interface. This is only used for static WEP
 694                  * configuration for the case where hostapd did not yet know
 695                  * which keys are to be used when the interface was added.
 696                  */
 697                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 698                         hostapd_logger(hapd, sta->addr,
 699                                        HOSTAPD_MODULE_IEEE80211,
 700                                        HOSTAPD_LEVEL_DEBUG, "could not "
 701                                        "configure encryption for VLAN "
 702                                        "interface for vlan_id=%d",
 703                                        sta->vlan_id);
 704                 }
 705         }
 706
 707         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 708                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
 709                        "'%s'", iface);
 710
 711         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
 712                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
 713
 714         ret = hostapd_drv_set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
 715         if (ret < 0) {
 716                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 717                                HOSTAPD_LEVEL_DEBUG, "could not bind the STA "
 718                                "entry to vlan_id=%d", sta->vlan_id);
 719         }
 720         return ret;
 721 #else /* CONFIG_NO_VLAN */
 722         return 0;
 723 #endif /* CONFIG_NO_VLAN */
 724 }
 725
 726
 727 #ifdef CONFIG_IEEE80211W
 728
 729 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 730 {
 731         u32 tu;
 732         struct os_time now, passed;
 733         os_get_time(&now);
 734         os_time_sub(&now, &sta->sa_query_start, &passed);
 735         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 736         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
 737                 hostapd_logger(hapd, sta->addr,
 738                                HOSTAPD_MODULE_IEEE80211,
 739                                HOSTAPD_LEVEL_DEBUG,
 740                                "association SA Query timed out");
 741                 sta->sa_query_timed_out = 1;
 742                 os_free(sta->sa_query_trans_id);
 743                 sta->sa_query_trans_id = NULL;
 744                 sta->sa_query_count = 0;
 745                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 746                 return 1;
 747         }
 748
 749         return 0;
 750 }
 751
 752
 753 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
 754 {
 755         struct hostapd_data *hapd = eloop_ctx;
 756         struct sta_info *sta = timeout_ctx;
 757         unsigned int timeout, sec, usec;
 758         u8 *trans_id, *nbuf;
 759
 760         if (sta->sa_query_count > 0 &&
 761             ap_check_sa_query_timeout(hapd, sta))
 762                 return;
 763
 764         nbuf = os_realloc(sta->sa_query_trans_id,
 765                           (sta->sa_query_count + 1) * WLAN_SA_QUERY_TR_ID_LEN);
 766         if (nbuf == NULL)
 767                 return;
 768         if (sta->sa_query_count == 0) {
 769                 /* Starting a new SA Query procedure */
 770                 os_get_time(&sta->sa_query_start);
 771         }
 772         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
 773         sta->sa_query_trans_id = nbuf;
 774         sta->sa_query_count++;
 775
 776         os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 777
 778         timeout = hapd->conf->assoc_sa_query_retry_timeout;
 779         sec = ((timeout / 1000) * 1024) / 1000;
 780         usec = (timeout % 1000) * 1024;
 781         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
 782
 783         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 784                        HOSTAPD_LEVEL_DEBUG,
 785                        "association SA Query attempt %d", sta->sa_query_count);
 786
 787 #ifdef NEED_AP_MLME
 788         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
 789 #endif /* NEED_AP_MLME */
 790 }
 791
 792
 793 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 794 {
 795         ap_sa_query_timer(hapd, sta);
 796 }
 797
 798
 799 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 800 {
 801         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 802         os_free(sta->sa_query_trans_id);
 803         sta->sa_query_trans_id = NULL;
 804         sta->sa_query_count = 0;
 805 }
 806
 807 #endif /* CONFIG_IEEE80211W */
 808
 809
 810 void ap_sta_set_authorized(struct hostapd_data *hapd, struct sta_info *sta,
 811                            int authorized)
 812 {
 813         const u8 *dev_addr = NULL;
 814         if (!!authorized == !!(sta->flags & WLAN_STA_AUTHORIZED))
 815                 return;
 816
 817 #ifdef CONFIG_P2P
 818         dev_addr = p2p_group_get_dev_addr(hapd->p2p_group, sta->addr);
 819 #endif /* CONFIG_P2P */
 820
 821         if (authorized) {
 822                 if (dev_addr)
 823                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 824                                 MACSTR " p2p_dev_addr=" MACSTR,
 825                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 826                 else
 827                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 828                                 MACSTR, MAC2STR(sta->addr));
 829                 if (hapd->msg_ctx_parent &&
 830                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 831                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 832                                 AP_STA_CONNECTED MACSTR " p2p_dev_addr="
 833                                 MACSTR,
 834                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 835                 else if (hapd->msg_ctx_parent &&
 836                          hapd->msg_ctx_parent != hapd->msg_ctx)
 837                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 838                                 AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
 839
 840                 sta->flags |= WLAN_STA_AUTHORIZED;
 841         } else {
 842                 if (dev_addr)
 843                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 844                                 MACSTR " p2p_dev_addr=" MACSTR,
 845                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 846                 else
 847                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 848                                 MACSTR, MAC2STR(sta->addr));
 849                 if (hapd->msg_ctx_parent &&
 850                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 851                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 852                                 AP_STA_DISCONNECTED MACSTR " p2p_dev_addr="
 853                                 MACSTR, MAC2STR(sta->addr), MAC2STR(dev_addr));
 854                 else if (hapd->msg_ctx_parent &&
 855                          hapd->msg_ctx_parent != hapd->msg_ctx)
 856                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 857                                 AP_STA_DISCONNECTED MACSTR,
 858                                 MAC2STR(sta->addr));
 859                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 860         }
 861
 862         if (hapd->sta_authorized_cb)
 863                 hapd->sta_authorized_cb(hapd->sta_authorized_cb_ctx,
 864                                         sta->addr, authorized, dev_addr);
 865 }
 866
 867
 868 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
 869                        const u8 *addr, u16 reason)
 870 {
 871
 872         if (sta == NULL && addr)
 873                 sta = ap_get_sta(hapd, addr);
 874
 875         if (addr)
 876                 hostapd_drv_sta_deauth(hapd, addr, reason);
 877
 878         if (sta == NULL)
 879                 return;
 880         ap_sta_set_authorized(hapd, sta, 0);
 881         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
 882         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 883         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 884         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 885         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 886                                ap_handle_timer, hapd, sta);
 887         sta->timeout_next = STA_REMOVE;
 888
 889         sta->deauth_reason = reason;
 890         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 891         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 892         eloop_register_timeout(hapd->iface->drv_flags &
 893                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 894                                ap_sta_deauth_cb_timeout, hapd, sta);
 895 }
 896
 897
 898 void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta)
 899 {
 900         if (!(sta->flags & WLAN_STA_PENDING_DEAUTH_CB)) {
 901                 wpa_printf(MSG_DEBUG, "Ignore deauth cb for test frame");
 902                 return;
 903         }
 904         sta->flags &= ~WLAN_STA_PENDING_DEAUTH_CB;
 905         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 906         ap_sta_deauth_cb_timeout(hapd, sta);
 907 }
 908
 909
 910 void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta)
 911 {
 912         if (!(sta->flags & WLAN_STA_PENDING_DISASSOC_CB)) {
 913                 wpa_printf(MSG_DEBUG, "Ignore disassoc cb for test frame");
 914                 return;
 915         }
 916         sta->flags &= ~WLAN_STA_PENDING_DISASSOC_CB;
 917         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 918         ap_sta_disassoc_cb_timeout(hapd, sta);
 919 }