src/ap/sta_info.c

   1 /*
   2  * hostapd / Station table
   3  * Copyright (c) 2002-2011, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "utils/eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/wpa_ctrl.h"
  15 #include "radius/radius.h"
  16 #include "radius/radius_client.h"
  17 #include "drivers/driver.h"
  18 #include "p2p/p2p.h"
  19 #include "hostapd.h"
  20 #include "accounting.h"
  21 #include "ieee802_1x.h"
  22 #include "ieee802_11.h"
  23 #include "ieee802_11_auth.h"
  24 #include "wpa_auth.h"
  25 #include "preauth_auth.h"
  26 #include "ap_config.h"
  27 #include "beacon.h"
  28 #include "ap_mlme.h"
  29 #include "vlan_init.h"
  30 #include "p2p_hostapd.h"
  31 #include "ap_drv_ops.h"
  32 #include "gas_serv.h"
  33 #include "sta_info.h"
  34
  35 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
  36                                        struct sta_info *sta);
  37 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx);
  38 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx);
  39 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx);
  40 #ifdef CONFIG_IEEE80211W
  41 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx);
  42 #endif /* CONFIG_IEEE80211W */
  43 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta);
  44
  45 int ap_for_each_sta(struct hostapd_data *hapd,
  46                     int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
  47                               void *ctx),
  48                     void *ctx)
  49 {
  50         struct sta_info *sta;
  51
  52         for (sta = hapd->sta_list; sta; sta = sta->next) {
  53                 if (cb(hapd, sta, ctx))
  54                         return 1;
  55         }
  56
  57         return 0;
  58 }
  59
  60
  61 struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta)
  62 {
  63         struct sta_info *s;
  64
  65         s = hapd->sta_hash[STA_HASH(sta)];
  66         while (s != NULL && os_memcmp(s->addr, sta, 6) != 0)
  67                 s = s->hnext;
  68         return s;
  69 }
  70
  71
  72 static void ap_sta_list_del(struct hostapd_data *hapd, struct sta_info *sta)
  73 {
  74         struct sta_info *tmp;
  75
  76         if (hapd->sta_list == sta) {
  77                 hapd->sta_list = sta->next;
  78                 return;
  79         }
  80
  81         tmp = hapd->sta_list;
  82         while (tmp != NULL && tmp->next != sta)
  83                 tmp = tmp->next;
  84         if (tmp == NULL) {
  85                 wpa_printf(MSG_DEBUG, "Could not remove STA " MACSTR " from "
  86                            "list.", MAC2STR(sta->addr));
  87         } else
  88                 tmp->next = sta->next;
  89 }
  90
  91
  92 void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta)
  93 {
  94         sta->hnext = hapd->sta_hash[STA_HASH(sta->addr)];
  95         hapd->sta_hash[STA_HASH(sta->addr)] = sta;
  96 }
  97
  98
  99 static void ap_sta_hash_del(struct hostapd_data *hapd, struct sta_info *sta)
 100 {
 101         struct sta_info *s;
 102
 103         s = hapd->sta_hash[STA_HASH(sta->addr)];
 104         if (s == NULL) return;
 105         if (os_memcmp(s->addr, sta->addr, 6) == 0) {
 106                 hapd->sta_hash[STA_HASH(sta->addr)] = s->hnext;
 107                 return;
 108         }
 109
 110         while (s->hnext != NULL &&
 111                os_memcmp(s->hnext->addr, sta->addr, ETH_ALEN) != 0)
 112                 s = s->hnext;
 113         if (s->hnext != NULL)
 114                 s->hnext = s->hnext->hnext;
 115         else
 116                 wpa_printf(MSG_DEBUG, "AP: could not remove STA " MACSTR
 117                            " from hash table", MAC2STR(sta->addr));
 118 }
 119
 120
 121 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
 122 {
 123         int set_beacon = 0;
 124
 125         accounting_sta_stop(hapd, sta);
 126
 127         /* just in case */
 128         ap_sta_set_authorized(hapd, sta, 0);
 129
 130         if (sta->flags & WLAN_STA_WDS)
 131                 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 0);
 132
 133         if (!(sta->flags & WLAN_STA_PREAUTH))
 134                 hostapd_drv_sta_remove(hapd, sta->addr);
 135
 136         ap_sta_hash_del(hapd, sta);
 137         ap_sta_list_del(hapd, sta);
 138
 139         if (sta->aid > 0)
 140                 hapd->sta_aid[(sta->aid - 1) / 32] &=
 141                         ~BIT((sta->aid - 1) % 32);
 142
 143         hapd->num_sta--;
 144         if (sta->nonerp_set) {
 145                 sta->nonerp_set = 0;
 146                 hapd->iface->num_sta_non_erp--;
 147                 if (hapd->iface->num_sta_non_erp == 0)
 148                         set_beacon++;
 149         }
 150
 151         if (sta->no_short_slot_time_set) {
 152                 sta->no_short_slot_time_set = 0;
 153                 hapd->iface->num_sta_no_short_slot_time--;
 154                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 155                     && hapd->iface->num_sta_no_short_slot_time == 0)
 156                         set_beacon++;
 157         }
 158
 159         if (sta->no_short_preamble_set) {
 160                 sta->no_short_preamble_set = 0;
 161                 hapd->iface->num_sta_no_short_preamble--;
 162                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 163                     && hapd->iface->num_sta_no_short_preamble == 0)
 164                         set_beacon++;
 165         }
 166
 167         if (sta->no_ht_gf_set) {
 168                 sta->no_ht_gf_set = 0;
 169                 hapd->iface->num_sta_ht_no_gf--;
 170         }
 171
 172         if (sta->no_ht_set) {
 173                 sta->no_ht_set = 0;
 174                 hapd->iface->num_sta_no_ht--;
 175         }
 176
 177         if (sta->ht_20mhz_set) {
 178                 sta->ht_20mhz_set = 0;
 179                 hapd->iface->num_sta_ht_20mhz--;
 180         }
 181
 182 #ifdef CONFIG_P2P
 183         if (sta->no_p2p_set) {
 184                 sta->no_p2p_set = 0;
 185                 hapd->num_sta_no_p2p--;
 186                 if (hapd->num_sta_no_p2p == 0)
 187                         hostapd_p2p_non_p2p_sta_disconnected(hapd);
 188         }
 189 #endif /* CONFIG_P2P */
 190
 191 #if defined(NEED_AP_MLME) && defined(CONFIG_IEEE80211N)
 192         if (hostapd_ht_operation_update(hapd->iface) > 0)
 193                 set_beacon++;
 194 #endif /* NEED_AP_MLME && CONFIG_IEEE80211N */
 195
 196         if (set_beacon)
 197                 ieee802_11_set_beacons(hapd->iface);
 198
 199         wpa_printf(MSG_DEBUG, "%s: cancel ap_handle_timer for " MACSTR,
 200                    __func__, MAC2STR(sta->addr));
 201         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 202         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 203         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 204         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 205
 206         ieee802_1x_free_station(sta);
 207         wpa_auth_sta_deinit(sta->wpa_sm);
 208         rsn_preauth_free_station(hapd, sta);
 209 #ifndef CONFIG_NO_RADIUS
 210         radius_client_flush_auth(hapd->radius, sta->addr);
 211 #endif /* CONFIG_NO_RADIUS */
 212
 213         os_free(sta->last_assoc_req);
 214         os_free(sta->challenge);
 215
 216 #ifdef CONFIG_IEEE80211W
 217         os_free(sta->sa_query_trans_id);
 218         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 219 #endif /* CONFIG_IEEE80211W */
 220
 221 #ifdef CONFIG_P2P
 222         p2p_group_notif_disassoc(hapd->p2p_group, sta->addr);
 223 #endif /* CONFIG_P2P */
 224
 225 #ifdef CONFIG_INTERWORKING
 226         if (sta->gas_dialog) {
 227                 int i;
 228                 for (i = 0; i < GAS_DIALOG_MAX; i++)
 229                         gas_serv_dialog_clear(&sta->gas_dialog[i]);
 230                 os_free(sta->gas_dialog);
 231         }
 232 #endif /* CONFIG_INTERWORKING */
 233
 234         wpabuf_free(sta->wps_ie);
 235         wpabuf_free(sta->p2p_ie);
 236         wpabuf_free(sta->hs20_ie);
 237
 238         os_free(sta->ht_capabilities);
 239         hostapd_free_psk_list(sta->psk);
 240         os_free(sta->identity);
 241         os_free(sta->radius_cui);
 242
 243         os_free(sta);
 244 }
 245
 246
 247 void hostapd_free_stas(struct hostapd_data *hapd)
 248 {
 249         struct sta_info *sta, *prev;
 250
 251         sta = hapd->sta_list;
 252
 253         while (sta) {
 254                 prev = sta;
 255                 if (sta->flags & WLAN_STA_AUTH) {
 256                         mlme_deauthenticate_indication(
 257                                 hapd, sta, WLAN_REASON_UNSPECIFIED);
 258                 }
 259                 sta = sta->next;
 260                 wpa_printf(MSG_DEBUG, "Removing station " MACSTR,
 261                            MAC2STR(prev->addr));
 262                 ap_free_sta(hapd, prev);
 263         }
 264 }
 265
 266
 267 /**
 268  * ap_handle_timer - Per STA timer handler
 269  * @eloop_ctx: struct hostapd_data *
 270  * @timeout_ctx: struct sta_info *
 271  *
 272  * This function is called to check station activity and to remove inactive
 273  * stations.
 274  */
 275 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 276 {
 277         struct hostapd_data *hapd = eloop_ctx;
 278         struct sta_info *sta = timeout_ctx;
 279         unsigned long next_time = 0;
 280
 281         wpa_printf(MSG_DEBUG, "%s: " MACSTR " flags=0x%x timeout_next=%d",
 282                    __func__, MAC2STR(sta->addr), sta->flags,
 283                    sta->timeout_next);
 284         if (sta->timeout_next == STA_REMOVE) {
 285                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 286                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 287                                "local deauth request");
 288                 ap_free_sta(hapd, sta);
 289                 return;
 290         }
 291
 292         if ((sta->flags & WLAN_STA_ASSOC) &&
 293             (sta->timeout_next == STA_NULLFUNC ||
 294              sta->timeout_next == STA_DISASSOC)) {
 295                 int inactive_sec;
 296                 /*
 297                  * Add random value to timeout so that we don't end up bouncing
 298                  * all stations at the same time if we have lots of associated
 299                  * stations that are idle (but keep re-associating).
 300                  */
 301                 int fuzz = os_random() % 20;
 302                 inactive_sec = hostapd_drv_get_inact_sec(hapd, sta->addr);
 303                 if (inactive_sec == -1) {
 304                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 305                                 "Check inactivity: Could not "
 306                                 "get station info from kernel driver for "
 307                                 MACSTR, MAC2STR(sta->addr));
 308                         /*
 309                          * The driver may not support this functionality.
 310                          * Anyway, try again after the next inactivity timeout,
 311                          * but do not disconnect the station now.
 312                          */
 313                         next_time = hapd->conf->ap_max_inactivity + fuzz;
 314                 } else if (inactive_sec < hapd->conf->ap_max_inactivity &&
 315                            sta->flags & WLAN_STA_ASSOC) {
 316                         /* station activity detected; reset timeout state */
 317                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 318                                 "Station " MACSTR " has been active %is ago",
 319                                 MAC2STR(sta->addr), inactive_sec);
 320                         sta->timeout_next = STA_NULLFUNC;
 321                         next_time = hapd->conf->ap_max_inactivity + fuzz -
 322                                 inactive_sec;
 323                 } else {
 324                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 325                                 "Station " MACSTR " has been "
 326                                 "inactive too long: %d sec, max allowed: %d",
 327                                 MAC2STR(sta->addr), inactive_sec,
 328                                 hapd->conf->ap_max_inactivity);
 329
 330                         if (hapd->conf->skip_inactivity_poll)
 331                                 sta->timeout_next = STA_DISASSOC;
 332                 }
 333         }
 334
 335         if ((sta->flags & WLAN_STA_ASSOC) &&
 336             sta->timeout_next == STA_DISASSOC &&
 337             !(sta->flags & WLAN_STA_PENDING_POLL) &&
 338             !hapd->conf->skip_inactivity_poll) {
 339                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR
 340                         " has ACKed data poll", MAC2STR(sta->addr));
 341                 /* data nullfunc frame poll did not produce TX errors; assume
 342                  * station ACKed it */
 343                 sta->timeout_next = STA_NULLFUNC;
 344                 next_time = hapd->conf->ap_max_inactivity;
 345         }
 346
 347         if (next_time) {
 348                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 349                            "for " MACSTR " (%lu seconds)",
 350                            __func__, MAC2STR(sta->addr), next_time);
 351                 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
 352                                        sta);
 353                 return;
 354         }
 355
 356         if (sta->timeout_next == STA_NULLFUNC &&
 357             (sta->flags & WLAN_STA_ASSOC)) {
 358                 wpa_printf(MSG_DEBUG, "  Polling STA");
 359                 sta->flags |= WLAN_STA_PENDING_POLL;
 360                 hostapd_drv_poll_client(hapd, hapd->own_addr, sta->addr,
 361                                         sta->flags & WLAN_STA_WMM);
 362         } else if (sta->timeout_next != STA_REMOVE) {
 363                 int deauth = sta->timeout_next == STA_DEAUTH;
 364
 365                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 366                         "Timeout, sending %s info to STA " MACSTR,
 367                         deauth ? "deauthentication" : "disassociation",
 368                         MAC2STR(sta->addr));
 369
 370                 if (deauth) {
 371                         hostapd_drv_sta_deauth(
 372                                 hapd, sta->addr,
 373                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
 374                 } else {
 375                         hostapd_drv_sta_disassoc(
 376                                 hapd, sta->addr,
 377                                 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 378                 }
 379         }
 380
 381         switch (sta->timeout_next) {
 382         case STA_NULLFUNC:
 383                 sta->timeout_next = STA_DISASSOC;
 384                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 385                            "for " MACSTR " (%d seconds - AP_DISASSOC_DELAY)",
 386                            __func__, MAC2STR(sta->addr), AP_DISASSOC_DELAY);
 387                 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
 388                                        hapd, sta);
 389                 break;
 390         case STA_DISASSOC:
 391                 ap_sta_set_authorized(hapd, sta, 0);
 392                 sta->flags &= ~WLAN_STA_ASSOC;
 393                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 394                 if (!sta->acct_terminate_cause)
 395                         sta->acct_terminate_cause =
 396                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 397                 accounting_sta_stop(hapd, sta);
 398                 ieee802_1x_free_station(sta);
 399                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 400                                HOSTAPD_LEVEL_INFO, "disassociated due to "
 401                                "inactivity");
 402                 sta->timeout_next = STA_DEAUTH;
 403                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 404                            "for " MACSTR " (%d seconds - AP_DEAUTH_DELAY)",
 405                            __func__, MAC2STR(sta->addr), AP_DEAUTH_DELAY);
 406                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
 407                                        hapd, sta);
 408                 mlme_disassociate_indication(
 409                         hapd, sta, WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 410                 break;
 411         case STA_DEAUTH:
 412         case STA_REMOVE:
 413                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 414                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 415                                "inactivity (timer DEAUTH/REMOVE)");
 416                 if (!sta->acct_terminate_cause)
 417                         sta->acct_terminate_cause =
 418                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 419                 mlme_deauthenticate_indication(
 420                         hapd, sta,
 421                         WLAN_REASON_PREV_AUTH_NOT_VALID);
 422                 ap_free_sta(hapd, sta);
 423                 break;
 424         }
 425 }
 426
 427
 428 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx)
 429 {
 430         struct hostapd_data *hapd = eloop_ctx;
 431         struct sta_info *sta = timeout_ctx;
 432         u8 addr[ETH_ALEN];
 433
 434         if (!(sta->flags & WLAN_STA_AUTH)) {
 435                 if (sta->flags & WLAN_STA_GAS) {
 436                         wpa_printf(MSG_DEBUG, "GAS: Remove temporary STA "
 437                                    "entry " MACSTR, MAC2STR(sta->addr));
 438                         ap_free_sta(hapd, sta);
 439                 }
 440                 return;
 441         }
 442
 443         mlme_deauthenticate_indication(hapd, sta,
 444                                        WLAN_REASON_PREV_AUTH_NOT_VALID);
 445         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 446                        HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 447                        "session timeout");
 448         sta->acct_terminate_cause =
 449                 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT;
 450         os_memcpy(addr, sta->addr, ETH_ALEN);
 451         ap_free_sta(hapd, sta);
 452         hostapd_drv_sta_deauth(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
 453 }
 454
 455
 456 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 457                             u32 session_timeout)
 458 {
 459         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 460                        HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d "
 461                        "seconds", session_timeout);
 462         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 463         eloop_register_timeout(session_timeout, 0, ap_handle_session_timer,
 464                                hapd, sta);
 465 }
 466
 467
 468 void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 469 {
 470         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 471 }
 472
 473
 474 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr)
 475 {
 476         struct sta_info *sta;
 477
 478         sta = ap_get_sta(hapd, addr);
 479         if (sta)
 480                 return sta;
 481
 482         wpa_printf(MSG_DEBUG, "  New STA");
 483         if (hapd->num_sta >= hapd->conf->max_num_sta) {
 484                 /* FIX: might try to remove some old STAs first? */
 485                 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)",
 486                            hapd->num_sta, hapd->conf->max_num_sta);
 487                 return NULL;
 488         }
 489
 490         sta = os_zalloc(sizeof(struct sta_info));
 491         if (sta == NULL) {
 492                 wpa_printf(MSG_ERROR, "malloc failed");
 493                 return NULL;
 494         }
 495         sta->acct_interim_interval = hapd->conf->acct_interim_interval;
 496
 497         /* initialize STA info data */
 498         wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 499                    "for " MACSTR " (%d seconds - ap_max_inactivity)",
 500                    __func__, MAC2STR(addr),
 501                    hapd->conf->ap_max_inactivity);
 502         eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 503                                ap_handle_timer, hapd, sta);
 504         os_memcpy(sta->addr, addr, ETH_ALEN);
 505         sta->next = hapd->sta_list;
 506         hapd->sta_list = sta;
 507         hapd->num_sta++;
 508         ap_sta_hash_add(hapd, sta);
 509         sta->ssid = &hapd->conf->ssid;
 510         ap_sta_remove_in_other_bss(hapd, sta);
 511
 512         return sta;
 513 }
 514
 515
 516 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 517 {
 518         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 519
 520         wpa_printf(MSG_DEBUG, "Removing STA " MACSTR " from kernel driver",
 521                    MAC2STR(sta->addr));
 522         if (hostapd_drv_sta_remove(hapd, sta->addr) &&
 523             sta->flags & WLAN_STA_ASSOC) {
 524                 wpa_printf(MSG_DEBUG, "Could not remove station " MACSTR
 525                            " from kernel driver.", MAC2STR(sta->addr));
 526                 return -1;
 527         }
 528         return 0;
 529 }
 530
 531
 532 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
 533                                        struct sta_info *sta)
 534 {
 535         struct hostapd_iface *iface = hapd->iface;
 536         size_t i;
 537
 538         for (i = 0; i < iface->num_bss; i++) {
 539                 struct hostapd_data *bss = iface->bss[i];
 540                 struct sta_info *sta2;
 541                 /* bss should always be set during operation, but it may be
 542                  * NULL during reconfiguration. Assume the STA is not
 543                  * associated to another BSS in that case to avoid NULL pointer
 544                  * dereferences. */
 545                 if (bss == hapd || bss == NULL)
 546                         continue;
 547                 sta2 = ap_get_sta(bss, sta->addr);
 548                 if (!sta2)
 549                         continue;
 550
 551                 ap_sta_disconnect(bss, sta2, sta2->addr,
 552                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
 553         }
 554 }
 555
 556
 557 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 558 {
 559         struct hostapd_data *hapd = eloop_ctx;
 560         struct sta_info *sta = timeout_ctx;
 561
 562         ap_sta_remove(hapd, sta);
 563         mlme_disassociate_indication(hapd, sta, sta->disassoc_reason);
 564 }
 565
 566
 567 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 568                          u16 reason)
 569 {
 570         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 571                    hapd->conf->iface, MAC2STR(sta->addr));
 572         sta->flags &= ~WLAN_STA_ASSOC;
 573         ap_sta_set_authorized(hapd, sta, 0);
 574         sta->timeout_next = STA_DEAUTH;
 575         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 576                    "for " MACSTR " (%d seconds - "
 577                    "AP_MAX_INACTIVITY_AFTER_DISASSOC)",
 578                    __func__, MAC2STR(sta->addr),
 579                    AP_MAX_INACTIVITY_AFTER_DISASSOC);
 580         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 581         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 582                                ap_handle_timer, hapd, sta);
 583         accounting_sta_stop(hapd, sta);
 584         ieee802_1x_free_station(sta);
 585
 586         sta->disassoc_reason = reason;
 587         sta->flags |= WLAN_STA_PENDING_DISASSOC_CB;
 588         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 589         eloop_register_timeout(hapd->iface->drv_flags &
 590                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 591                                ap_sta_disassoc_cb_timeout, hapd, sta);
 592 }
 593
 594
 595 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 596 {
 597         struct hostapd_data *hapd = eloop_ctx;
 598         struct sta_info *sta = timeout_ctx;
 599
 600         ap_sta_remove(hapd, sta);
 601         mlme_deauthenticate_indication(hapd, sta, sta->deauth_reason);
 602 }
 603
 604
 605 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 606                            u16 reason)
 607 {
 608         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 609                    hapd->conf->iface, MAC2STR(sta->addr));
 610         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 611         ap_sta_set_authorized(hapd, sta, 0);
 612         sta->timeout_next = STA_REMOVE;
 613         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 614                    "for " MACSTR " (%d seconds - "
 615                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
 616                    __func__, MAC2STR(sta->addr),
 617                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
 618         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 619         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 620                                ap_handle_timer, hapd, sta);
 621         accounting_sta_stop(hapd, sta);
 622         ieee802_1x_free_station(sta);
 623
 624         sta->deauth_reason = reason;
 625         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 626         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 627         eloop_register_timeout(hapd->iface->drv_flags &
 628                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 629                                ap_sta_deauth_cb_timeout, hapd, sta);
 630 }
 631
 632
 633 #ifdef CONFIG_WPS
 634 int ap_sta_wps_cancel(struct hostapd_data *hapd,
 635                       struct sta_info *sta, void *ctx)
 636 {
 637         if (sta && (sta->flags & WLAN_STA_WPS)) {
 638                 ap_sta_deauthenticate(hapd, sta,
 639                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 640                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 641                            __func__, MAC2STR(sta->addr));
 642                 return 1;
 643         }
 644
 645         return 0;
 646 }
 647 #endif /* CONFIG_WPS */
 648
 649
 650 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 651                      int old_vlanid)
 652 {
 653 #ifndef CONFIG_NO_VLAN
 654         const char *iface;
 655         struct hostapd_vlan *vlan = NULL;
 656         int ret;
 657
 658         /*
 659          * Do not proceed furthur if the vlan id remains same. We do not want
 660          * duplicate dynamic vlan entries.
 661          */
 662         if (sta->vlan_id == old_vlanid)
 663                 return 0;
 664
 665         /*
 666          * During 1x reauth, if the vlan id changes, then remove the old id and
 667          * proceed furthur to add the new one.
 668          */
 669         if (old_vlanid > 0)
 670                 vlan_remove_dynamic(hapd, old_vlanid);
 671
 672         iface = hapd->conf->iface;
 673         if (sta->ssid->vlan[0])
 674                 iface = sta->ssid->vlan;
 675
 676         if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
 677                 sta->vlan_id = 0;
 678         else if (sta->vlan_id > 0) {
 679                 vlan = hapd->conf->vlan;
 680                 while (vlan) {
 681                         if (vlan->vlan_id == sta->vlan_id ||
 682                             vlan->vlan_id == VLAN_ID_WILDCARD) {
 683                                 iface = vlan->ifname;
 684                                 break;
 685                         }
 686                         vlan = vlan->next;
 687                 }
 688         }
 689
 690         if (sta->vlan_id > 0 && vlan == NULL) {
 691                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 692                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
 693                                "binding station to (vlan_id=%d)",
 694                                sta->vlan_id);
 695                 return -1;
 696         } else if (sta->vlan_id > 0 && vlan->vlan_id == VLAN_ID_WILDCARD) {
 697                 vlan = vlan_add_dynamic(hapd, vlan, sta->vlan_id);
 698                 if (vlan == NULL) {
 699                         hostapd_logger(hapd, sta->addr,
 700                                        HOSTAPD_MODULE_IEEE80211,
 701                                        HOSTAPD_LEVEL_DEBUG, "could not add "
 702                                        "dynamic VLAN interface for vlan_id=%d",
 703                                        sta->vlan_id);
 704                         return -1;
 705                 }
 706
 707                 iface = vlan->ifname;
 708                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 709                         hostapd_logger(hapd, sta->addr,
 710                                        HOSTAPD_MODULE_IEEE80211,
 711                                        HOSTAPD_LEVEL_DEBUG, "could not "
 712                                        "configure encryption for dynamic VLAN "
 713                                        "interface for vlan_id=%d",
 714                                        sta->vlan_id);
 715                 }
 716
 717                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 718                                HOSTAPD_LEVEL_DEBUG, "added new dynamic VLAN "
 719                                "interface '%s'", iface);
 720         } else if (vlan && vlan->vlan_id == sta->vlan_id) {
 721                 if (sta->vlan_id > 0) {
 722                         vlan->dynamic_vlan++;
 723                         hostapd_logger(hapd, sta->addr,
 724                                        HOSTAPD_MODULE_IEEE80211,
 725                                        HOSTAPD_LEVEL_DEBUG, "updated existing "
 726                                        "dynamic VLAN interface '%s'", iface);
 727                 }
 728
 729                 /*
 730                  * Update encryption configuration for statically generated
 731                  * VLAN interface. This is only used for static WEP
 732                  * configuration for the case where hostapd did not yet know
 733                  * which keys are to be used when the interface was added.
 734                  */
 735                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 736                         hostapd_logger(hapd, sta->addr,
 737                                        HOSTAPD_MODULE_IEEE80211,
 738                                        HOSTAPD_LEVEL_DEBUG, "could not "
 739                                        "configure encryption for VLAN "
 740                                        "interface for vlan_id=%d",
 741                                        sta->vlan_id);
 742                 }
 743         }
 744
 745         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 746                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
 747                        "'%s'", iface);
 748
 749         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
 750                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
 751
 752         ret = hostapd_drv_set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
 753         if (ret < 0) {
 754                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 755                                HOSTAPD_LEVEL_DEBUG, "could not bind the STA "
 756                                "entry to vlan_id=%d", sta->vlan_id);
 757         }
 758         return ret;
 759 #else /* CONFIG_NO_VLAN */
 760         return 0;
 761 #endif /* CONFIG_NO_VLAN */
 762 }
 763
 764
 765 #ifdef CONFIG_IEEE80211W
 766
 767 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 768 {
 769         u32 tu;
 770         struct os_time now, passed;
 771         os_get_time(&now);
 772         os_time_sub(&now, &sta->sa_query_start, &passed);
 773         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 774         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
 775                 hostapd_logger(hapd, sta->addr,
 776                                HOSTAPD_MODULE_IEEE80211,
 777                                HOSTAPD_LEVEL_DEBUG,
 778                                "association SA Query timed out");
 779                 sta->sa_query_timed_out = 1;
 780                 os_free(sta->sa_query_trans_id);
 781                 sta->sa_query_trans_id = NULL;
 782                 sta->sa_query_count = 0;
 783                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 784                 return 1;
 785         }
 786
 787         return 0;
 788 }
 789
 790
 791 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
 792 {
 793         struct hostapd_data *hapd = eloop_ctx;
 794         struct sta_info *sta = timeout_ctx;
 795         unsigned int timeout, sec, usec;
 796         u8 *trans_id, *nbuf;
 797
 798         if (sta->sa_query_count > 0 &&
 799             ap_check_sa_query_timeout(hapd, sta))
 800                 return;
 801
 802         nbuf = os_realloc_array(sta->sa_query_trans_id,
 803                                 sta->sa_query_count + 1,
 804                                 WLAN_SA_QUERY_TR_ID_LEN);
 805         if (nbuf == NULL)
 806                 return;
 807         if (sta->sa_query_count == 0) {
 808                 /* Starting a new SA Query procedure */
 809                 os_get_time(&sta->sa_query_start);
 810         }
 811         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
 812         sta->sa_query_trans_id = nbuf;
 813         sta->sa_query_count++;
 814
 815         os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 816
 817         timeout = hapd->conf->assoc_sa_query_retry_timeout;
 818         sec = ((timeout / 1000) * 1024) / 1000;
 819         usec = (timeout % 1000) * 1024;
 820         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
 821
 822         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 823                        HOSTAPD_LEVEL_DEBUG,
 824                        "association SA Query attempt %d", sta->sa_query_count);
 825
 826         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
 827 }
 828
 829
 830 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 831 {
 832         ap_sa_query_timer(hapd, sta);
 833 }
 834
 835
 836 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 837 {
 838         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 839         os_free(sta->sa_query_trans_id);
 840         sta->sa_query_trans_id = NULL;
 841         sta->sa_query_count = 0;
 842 }
 843
 844 #endif /* CONFIG_IEEE80211W */
 845
 846
 847 void ap_sta_set_authorized(struct hostapd_data *hapd, struct sta_info *sta,
 848                            int authorized)
 849 {
 850         const u8 *dev_addr = NULL;
 851 #ifdef CONFIG_P2P
 852         u8 addr[ETH_ALEN];
 853 #endif /* CONFIG_P2P */
 854
 855         if (!!authorized == !!(sta->flags & WLAN_STA_AUTHORIZED))
 856                 return;
 857
 858 #ifdef CONFIG_P2P
 859         if (hapd->p2p_group == NULL) {
 860                 if (sta->p2p_ie != NULL &&
 861                     p2p_parse_dev_addr_in_p2p_ie(sta->p2p_ie, addr) == 0)
 862                         dev_addr = addr;
 863         } else
 864                 dev_addr = p2p_group_get_dev_addr(hapd->p2p_group, sta->addr);
 865 #endif /* CONFIG_P2P */
 866
 867         if (authorized) {
 868                 if (dev_addr)
 869                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 870                                 MACSTR " p2p_dev_addr=" MACSTR,
 871                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 872                 else
 873                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 874                                 MACSTR, MAC2STR(sta->addr));
 875                 if (hapd->msg_ctx_parent &&
 876                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 877                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 878                                 AP_STA_CONNECTED MACSTR " p2p_dev_addr="
 879                                 MACSTR,
 880                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 881                 else if (hapd->msg_ctx_parent &&
 882                          hapd->msg_ctx_parent != hapd->msg_ctx)
 883                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 884                                 AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
 885
 886                 sta->flags |= WLAN_STA_AUTHORIZED;
 887         } else {
 888                 if (dev_addr)
 889                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 890                                 MACSTR " p2p_dev_addr=" MACSTR,
 891                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 892                 else
 893                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 894                                 MACSTR, MAC2STR(sta->addr));
 895                 if (hapd->msg_ctx_parent &&
 896                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 897                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 898                                 AP_STA_DISCONNECTED MACSTR " p2p_dev_addr="
 899                                 MACSTR, MAC2STR(sta->addr), MAC2STR(dev_addr));
 900                 else if (hapd->msg_ctx_parent &&
 901                          hapd->msg_ctx_parent != hapd->msg_ctx)
 902                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 903                                 AP_STA_DISCONNECTED MACSTR,
 904                                 MAC2STR(sta->addr));
 905                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 906         }
 907
 908         if (hapd->sta_authorized_cb)
 909                 hapd->sta_authorized_cb(hapd->sta_authorized_cb_ctx,
 910                                         sta->addr, authorized, dev_addr);
 911 }
 912
 913
 914 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
 915                        const u8 *addr, u16 reason)
 916 {
 917
 918         if (sta == NULL && addr)
 919                 sta = ap_get_sta(hapd, addr);
 920
 921         if (addr)
 922                 hostapd_drv_sta_deauth(hapd, addr, reason);
 923
 924         if (sta == NULL)
 925                 return;
 926         ap_sta_set_authorized(hapd, sta, 0);
 927         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
 928         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 929         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 930         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 931                    "for " MACSTR " (%d seconds - "
 932                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
 933                    __func__, MAC2STR(sta->addr),
 934                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
 935         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 936         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 937                                ap_handle_timer, hapd, sta);
 938         sta->timeout_next = STA_REMOVE;
 939
 940         sta->deauth_reason = reason;
 941         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 942         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 943         eloop_register_timeout(hapd->iface->drv_flags &
 944                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 945                                ap_sta_deauth_cb_timeout, hapd, sta);
 946 }
 947
 948
 949 void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta)
 950 {
 951         if (!(sta->flags & WLAN_STA_PENDING_DEAUTH_CB)) {
 952                 wpa_printf(MSG_DEBUG, "Ignore deauth cb for test frame");
 953                 return;
 954         }
 955         sta->flags &= ~WLAN_STA_PENDING_DEAUTH_CB;
 956         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 957         ap_sta_deauth_cb_timeout(hapd, sta);
 958 }
 959
 960
 961 void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta)
 962 {
 963         if (!(sta->flags & WLAN_STA_PENDING_DISASSOC_CB)) {
 964                 wpa_printf(MSG_DEBUG, "Ignore disassoc cb for test frame");
 965                 return;
 966         }
 967         sta->flags &= ~WLAN_STA_PENDING_DISASSOC_CB;
 968         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 969         ap_sta_disassoc_cb_timeout(hapd, sta);
 970 }