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         wpabuf_free(sta->hs20_ie);
 236
 237         os_free(sta->ht_capabilities);
 238         os_free(sta->psk);
 239         os_free(sta->identity);
 240         os_free(sta->radius_cui);
 241
 242         os_free(sta);
 243 }
 244
 245
 246 void hostapd_free_stas(struct hostapd_data *hapd)
 247 {
 248         struct sta_info *sta, *prev;
 249
 250         sta = hapd->sta_list;
 251
 252         while (sta) {
 253                 prev = sta;
 254                 if (sta->flags & WLAN_STA_AUTH) {
 255                         mlme_deauthenticate_indication(
 256                                 hapd, sta, WLAN_REASON_UNSPECIFIED);
 257                 }
 258                 sta = sta->next;
 259                 wpa_printf(MSG_DEBUG, "Removing station " MACSTR,
 260                            MAC2STR(prev->addr));
 261                 ap_free_sta(hapd, prev);
 262         }
 263 }
 264
 265
 266 /**
 267  * ap_handle_timer - Per STA timer handler
 268  * @eloop_ctx: struct hostapd_data *
 269  * @timeout_ctx: struct sta_info *
 270  *
 271  * This function is called to check station activity and to remove inactive
 272  * stations.
 273  */
 274 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 275 {
 276         struct hostapd_data *hapd = eloop_ctx;
 277         struct sta_info *sta = timeout_ctx;
 278         unsigned long next_time = 0;
 279
 280         wpa_printf(MSG_DEBUG, "%s: " MACSTR " flags=0x%x timeout_next=%d",
 281                    __func__, MAC2STR(sta->addr), sta->flags,
 282                    sta->timeout_next);
 283         if (sta->timeout_next == STA_REMOVE) {
 284                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 285                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 286                                "local deauth request");
 287                 ap_free_sta(hapd, sta);
 288                 return;
 289         }
 290
 291         if ((sta->flags & WLAN_STA_ASSOC) &&
 292             (sta->timeout_next == STA_NULLFUNC ||
 293              sta->timeout_next == STA_DISASSOC)) {
 294                 int inactive_sec;
 295                 /*
 296                  * Add random value to timeout so that we don't end up bouncing
 297                  * all stations at the same time if we have lots of associated
 298                  * stations that are idle (but keep re-associating).
 299                  */
 300                 int fuzz = os_random() % 20;
 301                 inactive_sec = hostapd_drv_get_inact_sec(hapd, sta->addr);
 302                 if (inactive_sec == -1) {
 303                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 304                                 "Check inactivity: Could not "
 305                                 "get station info from kernel driver for "
 306                                 MACSTR, MAC2STR(sta->addr));
 307                         /*
 308                          * The driver may not support this functionality.
 309                          * Anyway, try again after the next inactivity timeout,
 310                          * but do not disconnect the station now.
 311                          */
 312                         next_time = hapd->conf->ap_max_inactivity + fuzz;
 313                 } else if (inactive_sec < hapd->conf->ap_max_inactivity &&
 314                            sta->flags & WLAN_STA_ASSOC) {
 315                         /* station activity detected; reset timeout state */
 316                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 317                                 "Station " MACSTR " has been active %is ago",
 318                                 MAC2STR(sta->addr), inactive_sec);
 319                         sta->timeout_next = STA_NULLFUNC;
 320                         next_time = hapd->conf->ap_max_inactivity + fuzz -
 321                                 inactive_sec;
 322                 } else {
 323                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 324                                 "Station " MACSTR " has been "
 325                                 "inactive too long: %d sec, max allowed: %d",
 326                                 MAC2STR(sta->addr), inactive_sec,
 327                                 hapd->conf->ap_max_inactivity);
 328
 329                         if (hapd->conf->skip_inactivity_poll)
 330                                 sta->timeout_next = STA_DISASSOC;
 331                 }
 332         }
 333
 334         if ((sta->flags & WLAN_STA_ASSOC) &&
 335             sta->timeout_next == STA_DISASSOC &&
 336             !(sta->flags & WLAN_STA_PENDING_POLL) &&
 337             !hapd->conf->skip_inactivity_poll) {
 338                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR
 339                         " has ACKed data poll", MAC2STR(sta->addr));
 340                 /* data nullfunc frame poll did not produce TX errors; assume
 341                  * station ACKed it */
 342                 sta->timeout_next = STA_NULLFUNC;
 343                 next_time = hapd->conf->ap_max_inactivity;
 344         }
 345
 346         if (next_time) {
 347                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 348                            "for " MACSTR " (%lu seconds)",
 349                            __func__, MAC2STR(sta->addr), next_time);
 350                 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
 351                                        sta);
 352                 return;
 353         }
 354
 355         if (sta->timeout_next == STA_NULLFUNC &&
 356             (sta->flags & WLAN_STA_ASSOC)) {
 357                 wpa_printf(MSG_DEBUG, "  Polling STA");
 358                 sta->flags |= WLAN_STA_PENDING_POLL;
 359                 hostapd_drv_poll_client(hapd, hapd->own_addr, sta->addr,
 360                                         sta->flags & WLAN_STA_WMM);
 361         } else if (sta->timeout_next != STA_REMOVE) {
 362                 int deauth = sta->timeout_next == STA_DEAUTH;
 363
 364                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 365                         "Timeout, sending %s info to STA " MACSTR,
 366                         deauth ? "deauthentication" : "disassociation",
 367                         MAC2STR(sta->addr));
 368
 369                 if (deauth) {
 370                         hostapd_drv_sta_deauth(
 371                                 hapd, sta->addr,
 372                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
 373                 } else {
 374                         hostapd_drv_sta_disassoc(
 375                                 hapd, sta->addr,
 376                                 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 377                 }
 378         }
 379
 380         switch (sta->timeout_next) {
 381         case STA_NULLFUNC:
 382                 sta->timeout_next = STA_DISASSOC;
 383                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 384                            "for " MACSTR " (%d seconds - AP_DISASSOC_DELAY)",
 385                            __func__, MAC2STR(sta->addr), AP_DISASSOC_DELAY);
 386                 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
 387                                        hapd, sta);
 388                 break;
 389         case STA_DISASSOC:
 390                 ap_sta_set_authorized(hapd, sta, 0);
 391                 sta->flags &= ~WLAN_STA_ASSOC;
 392                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 393                 if (!sta->acct_terminate_cause)
 394                         sta->acct_terminate_cause =
 395                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 396                 accounting_sta_stop(hapd, sta);
 397                 ieee802_1x_free_station(sta);
 398                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 399                                HOSTAPD_LEVEL_INFO, "disassociated due to "
 400                                "inactivity");
 401                 sta->timeout_next = STA_DEAUTH;
 402                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 403                            "for " MACSTR " (%d seconds - AP_DEAUTH_DELAY)",
 404                            __func__, MAC2STR(sta->addr), AP_DEAUTH_DELAY);
 405                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
 406                                        hapd, sta);
 407                 mlme_disassociate_indication(
 408                         hapd, sta, WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 409                 break;
 410         case STA_DEAUTH:
 411         case STA_REMOVE:
 412                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 413                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 414                                "inactivity (timer DEAUTH/REMOVE)");
 415                 if (!sta->acct_terminate_cause)
 416                         sta->acct_terminate_cause =
 417                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 418                 mlme_deauthenticate_indication(
 419                         hapd, sta,
 420                         WLAN_REASON_PREV_AUTH_NOT_VALID);
 421                 ap_free_sta(hapd, sta);
 422                 break;
 423         }
 424 }
 425
 426
 427 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx)
 428 {
 429         struct hostapd_data *hapd = eloop_ctx;
 430         struct sta_info *sta = timeout_ctx;
 431         u8 addr[ETH_ALEN];
 432
 433         if (!(sta->flags & WLAN_STA_AUTH)) {
 434                 if (sta->flags & WLAN_STA_GAS) {
 435                         wpa_printf(MSG_DEBUG, "GAS: Remove temporary STA "
 436                                    "entry " MACSTR, MAC2STR(sta->addr));
 437                         ap_free_sta(hapd, sta);
 438                 }
 439                 return;
 440         }
 441
 442         mlme_deauthenticate_indication(hapd, sta,
 443                                        WLAN_REASON_PREV_AUTH_NOT_VALID);
 444         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 445                        HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 446                        "session timeout");
 447         sta->acct_terminate_cause =
 448                 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT;
 449         os_memcpy(addr, sta->addr, ETH_ALEN);
 450         ap_free_sta(hapd, sta);
 451         hostapd_drv_sta_deauth(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
 452 }
 453
 454
 455 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 456                             u32 session_timeout)
 457 {
 458         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 459                        HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d "
 460                        "seconds", session_timeout);
 461         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 462         eloop_register_timeout(session_timeout, 0, ap_handle_session_timer,
 463                                hapd, sta);
 464 }
 465
 466
 467 void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 468 {
 469         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 470 }
 471
 472
 473 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr)
 474 {
 475         struct sta_info *sta;
 476
 477         sta = ap_get_sta(hapd, addr);
 478         if (sta)
 479                 return sta;
 480
 481         wpa_printf(MSG_DEBUG, "  New STA");
 482         if (hapd->num_sta >= hapd->conf->max_num_sta) {
 483                 /* FIX: might try to remove some old STAs first? */
 484                 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)",
 485                            hapd->num_sta, hapd->conf->max_num_sta);
 486                 return NULL;
 487         }
 488
 489         sta = os_zalloc(sizeof(struct sta_info));
 490         if (sta == NULL) {
 491                 wpa_printf(MSG_ERROR, "malloc failed");
 492                 return NULL;
 493         }
 494         sta->acct_interim_interval = hapd->conf->acct_interim_interval;
 495
 496         /* initialize STA info data */
 497         wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 498                    "for " MACSTR " (%d seconds - ap_max_inactivity)",
 499                    __func__, MAC2STR(addr),
 500                    hapd->conf->ap_max_inactivity);
 501         eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 502                                ap_handle_timer, hapd, sta);
 503         os_memcpy(sta->addr, addr, ETH_ALEN);
 504         sta->next = hapd->sta_list;
 505         hapd->sta_list = sta;
 506         hapd->num_sta++;
 507         ap_sta_hash_add(hapd, sta);
 508         sta->ssid = &hapd->conf->ssid;
 509         ap_sta_remove_in_other_bss(hapd, sta);
 510
 511         return sta;
 512 }
 513
 514
 515 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 516 {
 517         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 518
 519         wpa_printf(MSG_DEBUG, "Removing STA " MACSTR " from kernel driver",
 520                    MAC2STR(sta->addr));
 521         if (hostapd_drv_sta_remove(hapd, sta->addr) &&
 522             sta->flags & WLAN_STA_ASSOC) {
 523                 wpa_printf(MSG_DEBUG, "Could not remove station " MACSTR
 524                            " from kernel driver.", MAC2STR(sta->addr));
 525                 return -1;
 526         }
 527         return 0;
 528 }
 529
 530
 531 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
 532                                        struct sta_info *sta)
 533 {
 534         struct hostapd_iface *iface = hapd->iface;
 535         size_t i;
 536
 537         for (i = 0; i < iface->num_bss; i++) {
 538                 struct hostapd_data *bss = iface->bss[i];
 539                 struct sta_info *sta2;
 540                 /* bss should always be set during operation, but it may be
 541                  * NULL during reconfiguration. Assume the STA is not
 542                  * associated to another BSS in that case to avoid NULL pointer
 543                  * dereferences. */
 544                 if (bss == hapd || bss == NULL)
 545                         continue;
 546                 sta2 = ap_get_sta(bss, sta->addr);
 547                 if (!sta2)
 548                         continue;
 549
 550                 ap_sta_disconnect(bss, sta2, sta2->addr,
 551                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
 552         }
 553 }
 554
 555
 556 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 557 {
 558         struct hostapd_data *hapd = eloop_ctx;
 559         struct sta_info *sta = timeout_ctx;
 560
 561         ap_sta_remove(hapd, sta);
 562         mlme_disassociate_indication(hapd, sta, sta->disassoc_reason);
 563 }
 564
 565
 566 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 567                          u16 reason)
 568 {
 569         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 570                    hapd->conf->iface, MAC2STR(sta->addr));
 571         sta->flags &= ~WLAN_STA_ASSOC;
 572         ap_sta_set_authorized(hapd, sta, 0);
 573         sta->timeout_next = STA_DEAUTH;
 574         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 575                    "for " MACSTR " (%d seconds - "
 576                    "AP_MAX_INACTIVITY_AFTER_DISASSOC)",
 577                    __func__, MAC2STR(sta->addr),
 578                    AP_MAX_INACTIVITY_AFTER_DISASSOC);
 579         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 580         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 581                                ap_handle_timer, hapd, sta);
 582         accounting_sta_stop(hapd, sta);
 583         ieee802_1x_free_station(sta);
 584
 585         sta->disassoc_reason = reason;
 586         sta->flags |= WLAN_STA_PENDING_DISASSOC_CB;
 587         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 588         eloop_register_timeout(hapd->iface->drv_flags &
 589                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 590                                ap_sta_disassoc_cb_timeout, hapd, sta);
 591 }
 592
 593
 594 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 595 {
 596         struct hostapd_data *hapd = eloop_ctx;
 597         struct sta_info *sta = timeout_ctx;
 598
 599         ap_sta_remove(hapd, sta);
 600         mlme_deauthenticate_indication(hapd, sta, sta->deauth_reason);
 601 }
 602
 603
 604 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 605                            u16 reason)
 606 {
 607         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 608                    hapd->conf->iface, MAC2STR(sta->addr));
 609         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 610         ap_sta_set_authorized(hapd, sta, 0);
 611         sta->timeout_next = STA_REMOVE;
 612         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 613                    "for " MACSTR " (%d seconds - "
 614                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
 615                    __func__, MAC2STR(sta->addr),
 616                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
 617         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 618         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 619                                ap_handle_timer, hapd, sta);
 620         accounting_sta_stop(hapd, sta);
 621         ieee802_1x_free_station(sta);
 622
 623         sta->deauth_reason = reason;
 624         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 625         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 626         eloop_register_timeout(hapd->iface->drv_flags &
 627                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 628                                ap_sta_deauth_cb_timeout, hapd, sta);
 629 }
 630
 631
 632 #ifdef CONFIG_WPS
 633 int ap_sta_wps_cancel(struct hostapd_data *hapd,
 634                       struct sta_info *sta, void *ctx)
 635 {
 636         if (sta && (sta->flags & WLAN_STA_WPS)) {
 637                 ap_sta_deauthenticate(hapd, sta,
 638                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 639                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 640                            __func__, MAC2STR(sta->addr));
 641                 return 1;
 642         }
 643
 644         return 0;
 645 }
 646 #endif /* CONFIG_WPS */
 647
 648
 649 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 650                      int old_vlanid)
 651 {
 652 #ifndef CONFIG_NO_VLAN
 653         const char *iface;
 654         struct hostapd_vlan *vlan = NULL;
 655         int ret;
 656
 657         /*
 658          * Do not proceed furthur if the vlan id remains same. We do not want
 659          * duplicate dynamic vlan entries.
 660          */
 661         if (sta->vlan_id == old_vlanid)
 662                 return 0;
 663
 664         /*
 665          * During 1x reauth, if the vlan id changes, then remove the old id and
 666          * proceed furthur to add the new one.
 667          */
 668         if (old_vlanid > 0)
 669                 vlan_remove_dynamic(hapd, old_vlanid);
 670
 671         iface = hapd->conf->iface;
 672         if (sta->ssid->vlan[0])
 673                 iface = sta->ssid->vlan;
 674
 675         if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
 676                 sta->vlan_id = 0;
 677         else if (sta->vlan_id > 0) {
 678                 vlan = hapd->conf->vlan;
 679                 while (vlan) {
 680                         if (vlan->vlan_id == sta->vlan_id ||
 681                             vlan->vlan_id == VLAN_ID_WILDCARD) {
 682                                 iface = vlan->ifname;
 683                                 break;
 684                         }
 685                         vlan = vlan->next;
 686                 }
 687         }
 688
 689         if (sta->vlan_id > 0 && vlan == NULL) {
 690                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 691                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
 692                                "binding station to (vlan_id=%d)",
 693                                sta->vlan_id);
 694                 return -1;
 695         } else if (sta->vlan_id > 0 && vlan->vlan_id == VLAN_ID_WILDCARD) {
 696                 vlan = vlan_add_dynamic(hapd, vlan, sta->vlan_id);
 697                 if (vlan == NULL) {
 698                         hostapd_logger(hapd, sta->addr,
 699                                        HOSTAPD_MODULE_IEEE80211,
 700                                        HOSTAPD_LEVEL_DEBUG, "could not add "
 701                                        "dynamic VLAN interface for vlan_id=%d",
 702                                        sta->vlan_id);
 703                         return -1;
 704                 }
 705
 706                 iface = vlan->ifname;
 707                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 708                         hostapd_logger(hapd, sta->addr,
 709                                        HOSTAPD_MODULE_IEEE80211,
 710                                        HOSTAPD_LEVEL_DEBUG, "could not "
 711                                        "configure encryption for dynamic VLAN "
 712                                        "interface for vlan_id=%d",
 713                                        sta->vlan_id);
 714                 }
 715
 716                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 717                                HOSTAPD_LEVEL_DEBUG, "added new dynamic VLAN "
 718                                "interface '%s'", iface);
 719         } else if (vlan && vlan->vlan_id == sta->vlan_id) {
 720                 if (sta->vlan_id > 0) {
 721                         vlan->dynamic_vlan++;
 722                         hostapd_logger(hapd, sta->addr,
 723                                        HOSTAPD_MODULE_IEEE80211,
 724                                        HOSTAPD_LEVEL_DEBUG, "updated existing "
 725                                        "dynamic VLAN interface '%s'", iface);
 726                 }
 727
 728                 /*
 729                  * Update encryption configuration for statically generated
 730                  * VLAN interface. This is only used for static WEP
 731                  * configuration for the case where hostapd did not yet know
 732                  * which keys are to be used when the interface was added.
 733                  */
 734                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 735                         hostapd_logger(hapd, sta->addr,
 736                                        HOSTAPD_MODULE_IEEE80211,
 737                                        HOSTAPD_LEVEL_DEBUG, "could not "
 738                                        "configure encryption for VLAN "
 739                                        "interface for vlan_id=%d",
 740                                        sta->vlan_id);
 741                 }
 742         }
 743
 744         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 745                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
 746                        "'%s'", iface);
 747
 748         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
 749                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
 750
 751         ret = hostapd_drv_set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
 752         if (ret < 0) {
 753                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 754                                HOSTAPD_LEVEL_DEBUG, "could not bind the STA "
 755                                "entry to vlan_id=%d", sta->vlan_id);
 756         }
 757         return ret;
 758 #else /* CONFIG_NO_VLAN */
 759         return 0;
 760 #endif /* CONFIG_NO_VLAN */
 761 }
 762
 763
 764 #ifdef CONFIG_IEEE80211W
 765
 766 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 767 {
 768         u32 tu;
 769         struct os_time now, passed;
 770         os_get_time(&now);
 771         os_time_sub(&now, &sta->sa_query_start, &passed);
 772         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 773         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
 774                 hostapd_logger(hapd, sta->addr,
 775                                HOSTAPD_MODULE_IEEE80211,
 776                                HOSTAPD_LEVEL_DEBUG,
 777                                "association SA Query timed out");
 778                 sta->sa_query_timed_out = 1;
 779                 os_free(sta->sa_query_trans_id);
 780                 sta->sa_query_trans_id = NULL;
 781                 sta->sa_query_count = 0;
 782                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 783                 return 1;
 784         }
 785
 786         return 0;
 787 }
 788
 789
 790 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
 791 {
 792         struct hostapd_data *hapd = eloop_ctx;
 793         struct sta_info *sta = timeout_ctx;
 794         unsigned int timeout, sec, usec;
 795         u8 *trans_id, *nbuf;
 796
 797         if (sta->sa_query_count > 0 &&
 798             ap_check_sa_query_timeout(hapd, sta))
 799                 return;
 800
 801         nbuf = os_realloc_array(sta->sa_query_trans_id,
 802                                 sta->sa_query_count + 1,
 803                                 WLAN_SA_QUERY_TR_ID_LEN);
 804         if (nbuf == NULL)
 805                 return;
 806         if (sta->sa_query_count == 0) {
 807                 /* Starting a new SA Query procedure */
 808                 os_get_time(&sta->sa_query_start);
 809         }
 810         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
 811         sta->sa_query_trans_id = nbuf;
 812         sta->sa_query_count++;
 813
 814         os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 815
 816         timeout = hapd->conf->assoc_sa_query_retry_timeout;
 817         sec = ((timeout / 1000) * 1024) / 1000;
 818         usec = (timeout % 1000) * 1024;
 819         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
 820
 821         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 822                        HOSTAPD_LEVEL_DEBUG,
 823                        "association SA Query attempt %d", sta->sa_query_count);
 824
 825         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
 826 }
 827
 828
 829 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 830 {
 831         ap_sa_query_timer(hapd, sta);
 832 }
 833
 834
 835 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 836 {
 837         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 838         os_free(sta->sa_query_trans_id);
 839         sta->sa_query_trans_id = NULL;
 840         sta->sa_query_count = 0;
 841 }
 842
 843 #endif /* CONFIG_IEEE80211W */
 844
 845
 846 void ap_sta_set_authorized(struct hostapd_data *hapd, struct sta_info *sta,
 847                            int authorized)
 848 {
 849         const u8 *dev_addr = NULL;
 850 #ifdef CONFIG_P2P
 851         u8 addr[ETH_ALEN];
 852 #endif /* CONFIG_P2P */
 853
 854         if (!!authorized == !!(sta->flags & WLAN_STA_AUTHORIZED))
 855                 return;
 856
 857 #ifdef CONFIG_P2P
 858         if (hapd->p2p_group == NULL) {
 859                 if (sta->p2p_ie != NULL &&
 860                     p2p_parse_dev_addr_in_p2p_ie(sta->p2p_ie, addr) == 0)
 861                         dev_addr = addr;
 862         } else
 863                 dev_addr = p2p_group_get_dev_addr(hapd->p2p_group, sta->addr);
 864 #endif /* CONFIG_P2P */
 865
 866         if (authorized) {
 867                 if (dev_addr)
 868                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 869                                 MACSTR " p2p_dev_addr=" MACSTR,
 870                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 871                 else
 872                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 873                                 MACSTR, MAC2STR(sta->addr));
 874                 if (hapd->msg_ctx_parent &&
 875                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 876                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 877                                 AP_STA_CONNECTED MACSTR " p2p_dev_addr="
 878                                 MACSTR,
 879                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 880                 else if (hapd->msg_ctx_parent &&
 881                          hapd->msg_ctx_parent != hapd->msg_ctx)
 882                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 883                                 AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
 884
 885                 sta->flags |= WLAN_STA_AUTHORIZED;
 886         } else {
 887                 if (dev_addr)
 888                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 889                                 MACSTR " p2p_dev_addr=" MACSTR,
 890                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 891                 else
 892                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 893                                 MACSTR, MAC2STR(sta->addr));
 894                 if (hapd->msg_ctx_parent &&
 895                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 896                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 897                                 AP_STA_DISCONNECTED MACSTR " p2p_dev_addr="
 898                                 MACSTR, MAC2STR(sta->addr), MAC2STR(dev_addr));
 899                 else if (hapd->msg_ctx_parent &&
 900                          hapd->msg_ctx_parent != hapd->msg_ctx)
 901                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 902                                 AP_STA_DISCONNECTED MACSTR,
 903                                 MAC2STR(sta->addr));
 904                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 905         }
 906
 907         if (hapd->sta_authorized_cb)
 908                 hapd->sta_authorized_cb(hapd->sta_authorized_cb_ctx,
 909                                         sta->addr, authorized, dev_addr);
 910 }
 911
 912
 913 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
 914                        const u8 *addr, u16 reason)
 915 {
 916
 917         if (sta == NULL && addr)
 918                 sta = ap_get_sta(hapd, addr);
 919
 920         if (addr)
 921                 hostapd_drv_sta_deauth(hapd, addr, reason);
 922
 923         if (sta == NULL)
 924                 return;
 925         ap_sta_set_authorized(hapd, sta, 0);
 926         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
 927         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 928         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 929         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 930                    "for " MACSTR " (%d seconds - "
 931                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
 932                    __func__, MAC2STR(sta->addr),
 933                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
 934         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 935         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 936                                ap_handle_timer, hapd, sta);
 937         sta->timeout_next = STA_REMOVE;
 938
 939         sta->deauth_reason = reason;
 940         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 941         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 942         eloop_register_timeout(hapd->iface->drv_flags &
 943                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 944                                ap_sta_deauth_cb_timeout, hapd, sta);
 945 }
 946
 947
 948 void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta)
 949 {
 950         if (!(sta->flags & WLAN_STA_PENDING_DEAUTH_CB)) {
 951                 wpa_printf(MSG_DEBUG, "Ignore deauth cb for test frame");
 952                 return;
 953         }
 954         sta->flags &= ~WLAN_STA_PENDING_DEAUTH_CB;
 955         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 956         ap_sta_deauth_cb_timeout(hapd, sta);
 957 }
 958
 959
 960 void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta)
 961 {
 962         if (!(sta->flags & WLAN_STA_PENDING_DISASSOC_CB)) {
 963                 wpa_printf(MSG_DEBUG, "Ignore disassoc cb for test frame");
 964                 return;
 965         }
 966         sta->flags &= ~WLAN_STA_PENDING_DISASSOC_CB;
 967         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 968         ap_sta_disassoc_cb_timeout(hapd, sta);
 969 }