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