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