src/ap/sta_info.c

   1 /*
   2  * hostapd / Station table
   3  * Copyright (c) 2002-2011, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "utils/includes.h"
  16
  17 #include "utils/common.h"
  18 #include "utils/eloop.h"
  19 #include "common/ieee802_11_defs.h"
  20 #include "common/wpa_ctrl.h"
  21 #include "radius/radius.h"
  22 #include "radius/radius_client.h"
  23 #include "drivers/driver.h"
  24 #include "p2p/p2p.h"
  25 #include "hostapd.h"
  26 #include "accounting.h"
  27 #include "ieee802_1x.h"
  28 #include "ieee802_11.h"
  29 #include "wpa_auth.h"
  30 #include "preauth_auth.h"
  31 #include "ap_config.h"
  32 #include "beacon.h"
  33 #include "ap_mlme.h"
  34 #include "vlan_init.h"
  35 #include "p2p_hostapd.h"
  36 #include "ap_drv_ops.h"
  37 #include "sta_info.h"
  38
  39 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
  40                                        struct sta_info *sta);
  41 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx);
  42 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx);
  43 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx);
  44 #ifdef CONFIG_IEEE80211W
  45 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx);
  46 #endif /* CONFIG_IEEE80211W */
  47 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta);
  48
  49 int ap_for_each_sta(struct hostapd_data *hapd,
  50                     int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
  51                               void *ctx),
  52                     void *ctx)
  53 {
  54         struct sta_info *sta;
  55
  56         for (sta = hapd->sta_list; sta; sta = sta->next) {
  57                 if (cb(hapd, sta, ctx))
  58                         return 1;
  59         }
  60
  61         return 0;
  62 }
  63
  64
  65 struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta)
  66 {
  67         struct sta_info *s;
  68
  69         s = hapd->sta_hash[STA_HASH(sta)];
  70         while (s != NULL && os_memcmp(s->addr, sta, 6) != 0)
  71                 s = s->hnext;
  72         return s;
  73 }
  74
  75
  76 static void ap_sta_list_del(struct hostapd_data *hapd, struct sta_info *sta)
  77 {
  78         struct sta_info *tmp;
  79
  80         if (hapd->sta_list == sta) {
  81                 hapd->sta_list = sta->next;
  82                 return;
  83         }
  84
  85         tmp = hapd->sta_list;
  86         while (tmp != NULL && tmp->next != sta)
  87                 tmp = tmp->next;
  88         if (tmp == NULL) {
  89                 wpa_printf(MSG_DEBUG, "Could not remove STA " MACSTR " from "
  90                            "list.", MAC2STR(sta->addr));
  91         } else
  92                 tmp->next = sta->next;
  93 }
  94
  95
  96 void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta)
  97 {
  98         sta->hnext = hapd->sta_hash[STA_HASH(sta->addr)];
  99         hapd->sta_hash[STA_HASH(sta->addr)] = sta;
 100 }
 101
 102
 103 static void ap_sta_hash_del(struct hostapd_data *hapd, struct sta_info *sta)
 104 {
 105         struct sta_info *s;
 106
 107         s = hapd->sta_hash[STA_HASH(sta->addr)];
 108         if (s == NULL) return;
 109         if (os_memcmp(s->addr, sta->addr, 6) == 0) {
 110                 hapd->sta_hash[STA_HASH(sta->addr)] = s->hnext;
 111                 return;
 112         }
 113
 114         while (s->hnext != NULL &&
 115                os_memcmp(s->hnext->addr, sta->addr, ETH_ALEN) != 0)
 116                 s = s->hnext;
 117         if (s->hnext != NULL)
 118                 s->hnext = s->hnext->hnext;
 119         else
 120                 wpa_printf(MSG_DEBUG, "AP: could not remove STA " MACSTR
 121                            " from hash table", MAC2STR(sta->addr));
 122 }
 123
 124
 125 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
 126 {
 127         int set_beacon = 0;
 128
 129         accounting_sta_stop(hapd, sta);
 130
 131         /* just in case */
 132         ap_sta_set_authorized(hapd, sta, 0);
 133
 134         if (sta->flags & WLAN_STA_WDS)
 135                 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 0);
 136
 137         if (!(sta->flags & WLAN_STA_PREAUTH))
 138                 hostapd_drv_sta_remove(hapd, sta->addr);
 139
 140         ap_sta_hash_del(hapd, sta);
 141         ap_sta_list_del(hapd, sta);
 142
 143         if (sta->aid > 0)
 144                 hapd->sta_aid[(sta->aid - 1) / 32] &=
 145                         ~BIT((sta->aid - 1) % 32);
 146
 147         hapd->num_sta--;
 148         if (sta->nonerp_set) {
 149                 sta->nonerp_set = 0;
 150                 hapd->iface->num_sta_non_erp--;
 151                 if (hapd->iface->num_sta_non_erp == 0)
 152                         set_beacon++;
 153         }
 154
 155         if (sta->no_short_slot_time_set) {
 156                 sta->no_short_slot_time_set = 0;
 157                 hapd->iface->num_sta_no_short_slot_time--;
 158                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 159                     && hapd->iface->num_sta_no_short_slot_time == 0)
 160                         set_beacon++;
 161         }
 162
 163         if (sta->no_short_preamble_set) {
 164                 sta->no_short_preamble_set = 0;
 165                 hapd->iface->num_sta_no_short_preamble--;
 166                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 167                     && hapd->iface->num_sta_no_short_preamble == 0)
 168                         set_beacon++;
 169         }
 170
 171         if (sta->no_ht_gf_set) {
 172                 sta->no_ht_gf_set = 0;
 173                 hapd->iface->num_sta_ht_no_gf--;
 174         }
 175
 176         if (sta->no_ht_set) {
 177                 sta->no_ht_set = 0;
 178                 hapd->iface->num_sta_no_ht--;
 179         }
 180
 181         if (sta->ht_20mhz_set) {
 182                 sta->ht_20mhz_set = 0;
 183                 hapd->iface->num_sta_ht_20mhz--;
 184         }
 185
 186 #ifdef CONFIG_P2P
 187         if (sta->no_p2p_set) {
 188                 sta->no_p2p_set = 0;
 189                 hapd->num_sta_no_p2p--;
 190                 if (hapd->num_sta_no_p2p == 0)
 191                         hostapd_p2p_non_p2p_sta_disconnected(hapd);
 192         }
 193 #endif /* CONFIG_P2P */
 194
 195 #if defined(NEED_AP_MLME) && defined(CONFIG_IEEE80211N)
 196         if (hostapd_ht_operation_update(hapd->iface) > 0)
 197                 set_beacon++;
 198 #endif /* NEED_AP_MLME && CONFIG_IEEE80211N */
 199
 200         if (set_beacon)
 201                 ieee802_11_set_beacons(hapd->iface);
 202
 203         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 204         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 205         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 206         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 207
 208         ieee802_1x_free_station(sta);
 209         wpa_auth_sta_deinit(sta->wpa_sm);
 210         rsn_preauth_free_station(hapd, sta);
 211 #ifndef CONFIG_NO_RADIUS
 212         radius_client_flush_auth(hapd->radius, sta->addr);
 213 #endif /* CONFIG_NO_RADIUS */
 214
 215         os_free(sta->last_assoc_req);
 216         os_free(sta->challenge);
 217
 218 #ifdef CONFIG_IEEE80211W
 219         os_free(sta->sa_query_trans_id);
 220         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 221 #endif /* CONFIG_IEEE80211W */
 222
 223 #ifdef CONFIG_P2P
 224         p2p_group_notif_disassoc(hapd->p2p_group, sta->addr);
 225 #endif /* CONFIG_P2P */
 226
 227         wpabuf_free(sta->wps_ie);
 228         wpabuf_free(sta->p2p_ie);
 229
 230         os_free(sta->ht_capabilities);
 231         os_free(sta->psk);
 232
 233         os_free(sta);
 234 }
 235
 236
 237 void hostapd_free_stas(struct hostapd_data *hapd)
 238 {
 239         struct sta_info *sta, *prev;
 240
 241         sta = hapd->sta_list;
 242
 243         while (sta) {
 244                 prev = sta;
 245                 if (sta->flags & WLAN_STA_AUTH) {
 246                         mlme_deauthenticate_indication(
 247                                 hapd, sta, WLAN_REASON_UNSPECIFIED);
 248                 }
 249                 sta = sta->next;
 250                 wpa_printf(MSG_DEBUG, "Removing station " MACSTR,
 251                            MAC2STR(prev->addr));
 252                 ap_free_sta(hapd, prev);
 253         }
 254 }
 255
 256
 257 /**
 258  * ap_handle_timer - Per STA timer handler
 259  * @eloop_ctx: struct hostapd_data *
 260  * @timeout_ctx: struct sta_info *
 261  *
 262  * This function is called to check station activity and to remove inactive
 263  * stations.
 264  */
 265 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 266 {
 267         struct hostapd_data *hapd = eloop_ctx;
 268         struct sta_info *sta = timeout_ctx;
 269         unsigned long next_time = 0;
 270
 271         if (sta->timeout_next == STA_REMOVE) {
 272                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 273                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 274                                "local deauth request");
 275                 ap_free_sta(hapd, sta);
 276                 return;
 277         }
 278
 279         if ((sta->flags & WLAN_STA_ASSOC) &&
 280             (sta->timeout_next == STA_NULLFUNC ||
 281              sta->timeout_next == STA_DISASSOC)) {
 282                 int inactive_sec;
 283                 inactive_sec = hostapd_drv_get_inact_sec(hapd, sta->addr);
 284                 if (inactive_sec == -1) {
 285                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 286                                 "Check inactivity: Could not "
 287                                 "get station info from kernel driver for "
 288                                 MACSTR, MAC2STR(sta->addr));
 289                         /*
 290                          * The driver may not support this functionality.
 291                          * Anyway, try again after the next inactivity timeout,
 292                          * but do not disconnect the station now.
 293                          */
 294                         next_time = hapd->conf->ap_max_inactivity;
 295                 } else if (inactive_sec < hapd->conf->ap_max_inactivity &&
 296                            sta->flags & WLAN_STA_ASSOC) {
 297                         /* station activity detected; reset timeout state */
 298                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 299                                 "Station " MACSTR " has been active %is ago",
 300                                 MAC2STR(sta->addr), inactive_sec);
 301                         sta->timeout_next = STA_NULLFUNC;
 302                         next_time = hapd->conf->ap_max_inactivity -
 303                                 inactive_sec;
 304                 } else {
 305                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 306                                 "Station " MACSTR " has been "
 307                                 "inactive too long: %d sec, max allowed: %d",
 308                                 MAC2STR(sta->addr), inactive_sec,
 309                                 hapd->conf->ap_max_inactivity);
 310
 311                         if (hapd->conf->skip_inactivity_poll)
 312                                 sta->timeout_next = STA_DISASSOC;
 313                 }
 314         }
 315
 316         if ((sta->flags & WLAN_STA_ASSOC) &&
 317             sta->timeout_next == STA_DISASSOC &&
 318             !(sta->flags & WLAN_STA_PENDING_POLL) &&
 319             !hapd->conf->skip_inactivity_poll) {
 320                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR
 321                         " has ACKed data poll", MAC2STR(sta->addr));
 322                 /* data nullfunc frame poll did not produce TX errors; assume
 323                  * station ACKed it */
 324                 sta->timeout_next = STA_NULLFUNC;
 325                 next_time = hapd->conf->ap_max_inactivity;
 326         }
 327
 328         if (next_time) {
 329                 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
 330                                        sta);
 331                 return;
 332         }
 333
 334         if (sta->timeout_next == STA_NULLFUNC &&
 335             (sta->flags & WLAN_STA_ASSOC)) {
 336                 wpa_printf(MSG_DEBUG, "  Polling STA");
 337                 sta->flags |= WLAN_STA_PENDING_POLL;
 338                 hostapd_drv_poll_client(hapd, hapd->own_addr, sta->addr,
 339                                         sta->flags & WLAN_STA_WMM);
 340         } else if (sta->timeout_next != STA_REMOVE) {
 341                 int deauth = sta->timeout_next == STA_DEAUTH;
 342
 343                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 344                         "Timeout, sending %s info to STA " MACSTR,
 345                         deauth ? "deauthentication" : "disassociation",
 346                         MAC2STR(sta->addr));
 347
 348                 if (deauth) {
 349                         hostapd_drv_sta_deauth(
 350                                 hapd, sta->addr,
 351                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
 352                 } else {
 353                         hostapd_drv_sta_disassoc(
 354                                 hapd, sta->addr,
 355                                 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 356                 }
 357         }
 358
 359         switch (sta->timeout_next) {
 360         case STA_NULLFUNC:
 361                 sta->timeout_next = STA_DISASSOC;
 362                 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
 363                                        hapd, sta);
 364                 break;
 365         case STA_DISASSOC:
 366                 ap_sta_set_authorized(hapd, sta, 0);
 367                 sta->flags &= ~WLAN_STA_ASSOC;
 368                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 369                 if (!sta->acct_terminate_cause)
 370                         sta->acct_terminate_cause =
 371                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 372                 accounting_sta_stop(hapd, sta);
 373                 ieee802_1x_free_station(sta);
 374                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 375                                HOSTAPD_LEVEL_INFO, "disassociated due to "
 376                                "inactivity");
 377                 sta->timeout_next = STA_DEAUTH;
 378                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
 379                                        hapd, sta);
 380                 mlme_disassociate_indication(
 381                         hapd, sta, WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 382                 break;
 383         case STA_DEAUTH:
 384         case STA_REMOVE:
 385                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 386                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 387                                "inactivity (timer DEAUTH/REMOVE)");
 388                 if (!sta->acct_terminate_cause)
 389                         sta->acct_terminate_cause =
 390                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 391                 mlme_deauthenticate_indication(
 392                         hapd, sta,
 393                         WLAN_REASON_PREV_AUTH_NOT_VALID);
 394                 ap_free_sta(hapd, sta);
 395                 break;
 396         }
 397 }
 398
 399
 400 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx)
 401 {
 402         struct hostapd_data *hapd = eloop_ctx;
 403         struct sta_info *sta = timeout_ctx;
 404         u8 addr[ETH_ALEN];
 405
 406         if (!(sta->flags & WLAN_STA_AUTH))
 407                 return;
 408
 409         mlme_deauthenticate_indication(hapd, sta,
 410                                        WLAN_REASON_PREV_AUTH_NOT_VALID);
 411         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 412                        HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 413                        "session timeout");
 414         sta->acct_terminate_cause =
 415                 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT;
 416         os_memcpy(addr, sta->addr, ETH_ALEN);
 417         ap_free_sta(hapd, sta);
 418         hostapd_drv_sta_deauth(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
 419 }
 420
 421
 422 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 423                             u32 session_timeout)
 424 {
 425         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 426                        HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d "
 427                        "seconds", session_timeout);
 428         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 429         eloop_register_timeout(session_timeout, 0, ap_handle_session_timer,
 430                                hapd, sta);
 431 }
 432
 433
 434 void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 435 {
 436         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 437 }
 438
 439
 440 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr)
 441 {
 442         struct sta_info *sta;
 443
 444         sta = ap_get_sta(hapd, addr);
 445         if (sta)
 446                 return sta;
 447
 448         wpa_printf(MSG_DEBUG, "  New STA");
 449         if (hapd->num_sta >= hapd->conf->max_num_sta) {
 450                 /* FIX: might try to remove some old STAs first? */
 451                 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)",
 452                            hapd->num_sta, hapd->conf->max_num_sta);
 453                 return NULL;
 454         }
 455
 456         sta = os_zalloc(sizeof(struct sta_info));
 457         if (sta == NULL) {
 458                 wpa_printf(MSG_ERROR, "malloc failed");
 459                 return NULL;
 460         }
 461         sta->acct_interim_interval = hapd->conf->acct_interim_interval;
 462
 463         /* initialize STA info data */
 464         eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 465                                ap_handle_timer, hapd, sta);
 466         os_memcpy(sta->addr, addr, ETH_ALEN);
 467         sta->next = hapd->sta_list;
 468         hapd->sta_list = sta;
 469         hapd->num_sta++;
 470         ap_sta_hash_add(hapd, sta);
 471         sta->ssid = &hapd->conf->ssid;
 472         ap_sta_remove_in_other_bss(hapd, sta);
 473
 474         return sta;
 475 }
 476
 477
 478 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 479 {
 480         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 481
 482         wpa_printf(MSG_DEBUG, "Removing STA " MACSTR " from kernel driver",
 483                    MAC2STR(sta->addr));
 484         if (hostapd_drv_sta_remove(hapd, sta->addr) &&
 485             sta->flags & WLAN_STA_ASSOC) {
 486                 wpa_printf(MSG_DEBUG, "Could not remove station " MACSTR
 487                            " from kernel driver.", MAC2STR(sta->addr));
 488                 return -1;
 489         }
 490         return 0;
 491 }
 492
 493
 494 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
 495                                        struct sta_info *sta)
 496 {
 497         struct hostapd_iface *iface = hapd->iface;
 498         size_t i;
 499
 500         for (i = 0; i < iface->num_bss; i++) {
 501                 struct hostapd_data *bss = iface->bss[i];
 502                 struct sta_info *sta2;
 503                 /* bss should always be set during operation, but it may be
 504                  * NULL during reconfiguration. Assume the STA is not
 505                  * associated to another BSS in that case to avoid NULL pointer
 506                  * dereferences. */
 507                 if (bss == hapd || bss == NULL)
 508                         continue;
 509                 sta2 = ap_get_sta(bss, sta->addr);
 510                 if (!sta2)
 511                         continue;
 512
 513                 ap_sta_disconnect(bss, sta2, sta2->addr,
 514                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
 515         }
 516 }
 517
 518
 519 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 520 {
 521         struct hostapd_data *hapd = eloop_ctx;
 522         struct sta_info *sta = timeout_ctx;
 523
 524         ap_sta_remove(hapd, sta);
 525         mlme_disassociate_indication(hapd, sta, sta->disassoc_reason);
 526 }
 527
 528
 529 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 530                          u16 reason)
 531 {
 532         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 533                    hapd->conf->iface, MAC2STR(sta->addr));
 534         sta->flags &= ~WLAN_STA_ASSOC;
 535         ap_sta_set_authorized(hapd, sta, 0);
 536         sta->timeout_next = STA_DEAUTH;
 537         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 538         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 539                                ap_handle_timer, hapd, sta);
 540         accounting_sta_stop(hapd, sta);
 541         ieee802_1x_free_station(sta);
 542
 543         sta->disassoc_reason = reason;
 544         sta->flags |= WLAN_STA_PENDING_DISASSOC_CB;
 545         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 546         eloop_register_timeout(hapd->iface->drv_flags &
 547                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 548                                ap_sta_disassoc_cb_timeout, hapd, sta);
 549 }
 550
 551
 552 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 553 {
 554         struct hostapd_data *hapd = eloop_ctx;
 555         struct sta_info *sta = timeout_ctx;
 556
 557         ap_sta_remove(hapd, sta);
 558         mlme_deauthenticate_indication(hapd, sta, sta->deauth_reason);
 559 }
 560
 561
 562 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 563                            u16 reason)
 564 {
 565         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 566                    hapd->conf->iface, MAC2STR(sta->addr));
 567         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 568         ap_sta_set_authorized(hapd, sta, 0);
 569         sta->timeout_next = STA_REMOVE;
 570         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 571         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 572                                ap_handle_timer, hapd, sta);
 573         accounting_sta_stop(hapd, sta);
 574         ieee802_1x_free_station(sta);
 575
 576         sta->deauth_reason = reason;
 577         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 578         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 579         eloop_register_timeout(hapd->iface->drv_flags &
 580                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 581                                ap_sta_deauth_cb_timeout, hapd, sta);
 582 }
 583
 584
 585 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 586                      int old_vlanid)
 587 {
 588 #ifndef CONFIG_NO_VLAN
 589         const char *iface;
 590         struct hostapd_vlan *vlan = NULL;
 591         int ret;
 592
 593         /*
 594          * Do not proceed furthur if the vlan id remains same. We do not want
 595          * duplicate dynamic vlan entries.
 596          */
 597         if (sta->vlan_id == old_vlanid)
 598                 return 0;
 599
 600         /*
 601          * During 1x reauth, if the vlan id changes, then remove the old id and
 602          * proceed furthur to add the new one.
 603          */
 604         if (old_vlanid > 0)
 605                 vlan_remove_dynamic(hapd, old_vlanid);
 606
 607         iface = hapd->conf->iface;
 608         if (sta->ssid->vlan[0])
 609                 iface = sta->ssid->vlan;
 610
 611         if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
 612                 sta->vlan_id = 0;
 613         else if (sta->vlan_id > 0) {
 614                 vlan = hapd->conf->vlan;
 615                 while (vlan) {
 616                         if (vlan->vlan_id == sta->vlan_id ||
 617                             vlan->vlan_id == VLAN_ID_WILDCARD) {
 618                                 iface = vlan->ifname;
 619                                 break;
 620                         }
 621                         vlan = vlan->next;
 622                 }
 623         }
 624
 625         if (sta->vlan_id > 0 && vlan == NULL) {
 626                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 627                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
 628                                "binding station to (vlan_id=%d)",
 629                                sta->vlan_id);
 630                 return -1;
 631         } else if (sta->vlan_id > 0 && vlan->vlan_id == VLAN_ID_WILDCARD) {
 632                 vlan = vlan_add_dynamic(hapd, vlan, sta->vlan_id);
 633                 if (vlan == NULL) {
 634                         hostapd_logger(hapd, sta->addr,
 635                                        HOSTAPD_MODULE_IEEE80211,
 636                                        HOSTAPD_LEVEL_DEBUG, "could not add "
 637                                        "dynamic VLAN interface for vlan_id=%d",
 638                                        sta->vlan_id);
 639                         return -1;
 640                 }
 641
 642                 iface = vlan->ifname;
 643                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 644                         hostapd_logger(hapd, sta->addr,
 645                                        HOSTAPD_MODULE_IEEE80211,
 646                                        HOSTAPD_LEVEL_DEBUG, "could not "
 647                                        "configure encryption for dynamic VLAN "
 648                                        "interface for vlan_id=%d",
 649                                        sta->vlan_id);
 650                 }
 651
 652                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 653                                HOSTAPD_LEVEL_DEBUG, "added new dynamic VLAN "
 654                                "interface '%s'", iface);
 655         } else if (vlan && vlan->vlan_id == sta->vlan_id) {
 656                 if (sta->vlan_id > 0) {
 657                         vlan->dynamic_vlan++;
 658                         hostapd_logger(hapd, sta->addr,
 659                                        HOSTAPD_MODULE_IEEE80211,
 660                                        HOSTAPD_LEVEL_DEBUG, "updated existing "
 661                                        "dynamic VLAN interface '%s'", iface);
 662                 }
 663
 664                 /*
 665                  * Update encryption configuration for statically generated
 666                  * VLAN interface. This is only used for static WEP
 667                  * configuration for the case where hostapd did not yet know
 668                  * which keys are to be used when the interface was added.
 669                  */
 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 VLAN "
 675                                        "interface for vlan_id=%d",
 676                                        sta->vlan_id);
 677                 }
 678         }
 679
 680         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 681                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
 682                        "'%s'", iface);
 683
 684         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
 685                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
 686
 687         ret = hostapd_drv_set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
 688         if (ret < 0) {
 689                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 690                                HOSTAPD_LEVEL_DEBUG, "could not bind the STA "
 691                                "entry to vlan_id=%d", sta->vlan_id);
 692         }
 693         return ret;
 694 #else /* CONFIG_NO_VLAN */
 695         return 0;
 696 #endif /* CONFIG_NO_VLAN */
 697 }
 698
 699
 700 #ifdef CONFIG_IEEE80211W
 701
 702 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 703 {
 704         u32 tu;
 705         struct os_time now, passed;
 706         os_get_time(&now);
 707         os_time_sub(&now, &sta->sa_query_start, &passed);
 708         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 709         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
 710                 hostapd_logger(hapd, sta->addr,
 711                                HOSTAPD_MODULE_IEEE80211,
 712                                HOSTAPD_LEVEL_DEBUG,
 713                                "association SA Query timed out");
 714                 sta->sa_query_timed_out = 1;
 715                 os_free(sta->sa_query_trans_id);
 716                 sta->sa_query_trans_id = NULL;
 717                 sta->sa_query_count = 0;
 718                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 719                 return 1;
 720         }
 721
 722         return 0;
 723 }
 724
 725
 726 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
 727 {
 728         struct hostapd_data *hapd = eloop_ctx;
 729         struct sta_info *sta = timeout_ctx;
 730         unsigned int timeout, sec, usec;
 731         u8 *trans_id, *nbuf;
 732
 733         if (sta->sa_query_count > 0 &&
 734             ap_check_sa_query_timeout(hapd, sta))
 735                 return;
 736
 737         nbuf = os_realloc(sta->sa_query_trans_id,
 738                           (sta->sa_query_count + 1) * WLAN_SA_QUERY_TR_ID_LEN);
 739         if (nbuf == NULL)
 740                 return;
 741         if (sta->sa_query_count == 0) {
 742                 /* Starting a new SA Query procedure */
 743                 os_get_time(&sta->sa_query_start);
 744         }
 745         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
 746         sta->sa_query_trans_id = nbuf;
 747         sta->sa_query_count++;
 748
 749         os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 750
 751         timeout = hapd->conf->assoc_sa_query_retry_timeout;
 752         sec = ((timeout / 1000) * 1024) / 1000;
 753         usec = (timeout % 1000) * 1024;
 754         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
 755
 756         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 757                        HOSTAPD_LEVEL_DEBUG,
 758                        "association SA Query attempt %d", sta->sa_query_count);
 759
 760 #ifdef NEED_AP_MLME
 761         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
 762 #endif /* NEED_AP_MLME */
 763 }
 764
 765
 766 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 767 {
 768         ap_sa_query_timer(hapd, sta);
 769 }
 770
 771
 772 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 773 {
 774         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 775         os_free(sta->sa_query_trans_id);
 776         sta->sa_query_trans_id = NULL;
 777         sta->sa_query_count = 0;
 778 }
 779
 780 #endif /* CONFIG_IEEE80211W */
 781
 782
 783 void ap_sta_set_authorized(struct hostapd_data *hapd, struct sta_info *sta,
 784                            int authorized)
 785 {
 786         const u8 *dev_addr = NULL;
 787         if (!!authorized == !!(sta->flags & WLAN_STA_AUTHORIZED))
 788                 return;
 789
 790 #ifdef CONFIG_P2P
 791         dev_addr = p2p_group_get_dev_addr(hapd->p2p_group, sta->addr);
 792 #endif /* CONFIG_P2P */
 793
 794         if (authorized) {
 795                 if (dev_addr)
 796                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 797                                 MACSTR " p2p_dev_addr=" MACSTR,
 798                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 799                 else
 800                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 801                                 MACSTR, MAC2STR(sta->addr));
 802                 if (hapd->msg_ctx_parent &&
 803                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 804                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 805                                 AP_STA_CONNECTED MACSTR " p2p_dev_addr="
 806                                 MACSTR,
 807                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 808                 else if (hapd->msg_ctx_parent &&
 809                          hapd->msg_ctx_parent != hapd->msg_ctx)
 810                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 811                                 AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
 812
 813                 sta->flags |= WLAN_STA_AUTHORIZED;
 814         } else {
 815                 if (dev_addr)
 816                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 817                                 MACSTR " p2p_dev_addr=" MACSTR,
 818                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 819                 else
 820                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 821                                 MACSTR, MAC2STR(sta->addr));
 822                 if (hapd->msg_ctx_parent &&
 823                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 824                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 825                                 AP_STA_DISCONNECTED MACSTR " p2p_dev_addr="
 826                                 MACSTR, MAC2STR(sta->addr), MAC2STR(dev_addr));
 827                 else if (hapd->msg_ctx_parent &&
 828                          hapd->msg_ctx_parent != hapd->msg_ctx)
 829                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 830                                 AP_STA_DISCONNECTED MACSTR,
 831                                 MAC2STR(sta->addr));
 832                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 833         }
 834
 835         if (hapd->sta_authorized_cb)
 836                 hapd->sta_authorized_cb(hapd->sta_authorized_cb_ctx,
 837                                         sta->addr, authorized, dev_addr);
 838 }
 839
 840
 841 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
 842                        const u8 *addr, u16 reason)
 843 {
 844
 845         if (sta == NULL && addr)
 846                 sta = ap_get_sta(hapd, addr);
 847
 848         if (addr)
 849                 hostapd_drv_sta_deauth(hapd, addr, reason);
 850
 851         if (sta == NULL)
 852                 return;
 853         ap_sta_set_authorized(hapd, sta, 0);
 854         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 855         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 856         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 857                                ap_handle_timer, hapd, sta);
 858         sta->timeout_next = STA_REMOVE;
 859
 860         sta->deauth_reason = reason;
 861         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 862         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 863         eloop_register_timeout(hapd->iface->drv_flags &
 864                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 865                                ap_sta_deauth_cb_timeout, hapd, sta);
 866 }
 867
 868
 869 void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta)
 870 {
 871         if (!(sta->flags & WLAN_STA_PENDING_DEAUTH_CB)) {
 872                 wpa_printf(MSG_DEBUG, "Ignore deauth cb for test frame");
 873                 return;
 874         }
 875         sta->flags &= ~WLAN_STA_PENDING_DEAUTH_CB;
 876         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 877         ap_sta_deauth_cb_timeout(hapd, sta);
 878 }
 879
 880
 881 void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta)
 882 {
 883         if (!(sta->flags & WLAN_STA_PENDING_DISASSOC_CB)) {
 884                 wpa_printf(MSG_DEBUG, "Ignore disassoc cb for test frame");
 885                 return;
 886         }
 887         sta->flags &= ~WLAN_STA_PENDING_DISASSOC_CB;
 888         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 889         ap_sta_disassoc_cb_timeout(hapd, sta);
 890 }