contrib/wpa/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         accounting_sta_get_id(hapd, sta);
 497
 498         /* initialize STA info data */
 499         wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 500                    "for " MACSTR " (%d seconds - ap_max_inactivity)",
 501                    __func__, MAC2STR(addr),
 502                    hapd->conf->ap_max_inactivity);
 503         eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 504                                ap_handle_timer, hapd, sta);
 505         os_memcpy(sta->addr, addr, ETH_ALEN);
 506         sta->next = hapd->sta_list;
 507         hapd->sta_list = sta;
 508         hapd->num_sta++;
 509         ap_sta_hash_add(hapd, sta);
 510         sta->ssid = &hapd->conf->ssid;
 511         ap_sta_remove_in_other_bss(hapd, sta);
 512
 513         return sta;
 514 }
 515
 516
 517 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 518 {
 519         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 520
 521         wpa_printf(MSG_DEBUG, "Removing STA " MACSTR " from kernel driver",
 522                    MAC2STR(sta->addr));
 523         if (hostapd_drv_sta_remove(hapd, sta->addr) &&
 524             sta->flags & WLAN_STA_ASSOC) {
 525                 wpa_printf(MSG_DEBUG, "Could not remove station " MACSTR
 526                            " from kernel driver.", MAC2STR(sta->addr));
 527                 return -1;
 528         }
 529         return 0;
 530 }
 531
 532
 533 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
 534                                        struct sta_info *sta)
 535 {
 536         struct hostapd_iface *iface = hapd->iface;
 537         size_t i;
 538
 539         for (i = 0; i < iface->num_bss; i++) {
 540                 struct hostapd_data *bss = iface->bss[i];
 541                 struct sta_info *sta2;
 542                 /* bss should always be set during operation, but it may be
 543                  * NULL during reconfiguration. Assume the STA is not
 544                  * associated to another BSS in that case to avoid NULL pointer
 545                  * dereferences. */
 546                 if (bss == hapd || bss == NULL)
 547                         continue;
 548                 sta2 = ap_get_sta(bss, sta->addr);
 549                 if (!sta2)
 550                         continue;
 551
 552                 ap_sta_disconnect(bss, sta2, sta2->addr,
 553                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
 554         }
 555 }
 556
 557
 558 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 559 {
 560         struct hostapd_data *hapd = eloop_ctx;
 561         struct sta_info *sta = timeout_ctx;
 562
 563         ap_sta_remove(hapd, sta);
 564         mlme_disassociate_indication(hapd, sta, sta->disassoc_reason);
 565 }
 566
 567
 568 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 569                          u16 reason)
 570 {
 571         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 572                    hapd->conf->iface, MAC2STR(sta->addr));
 573         sta->flags &= ~WLAN_STA_ASSOC;
 574         ap_sta_set_authorized(hapd, sta, 0);
 575         sta->timeout_next = STA_DEAUTH;
 576         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 577                    "for " MACSTR " (%d seconds - "
 578                    "AP_MAX_INACTIVITY_AFTER_DISASSOC)",
 579                    __func__, MAC2STR(sta->addr),
 580                    AP_MAX_INACTIVITY_AFTER_DISASSOC);
 581         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 582         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 583                                ap_handle_timer, hapd, sta);
 584         accounting_sta_stop(hapd, sta);
 585         ieee802_1x_free_station(sta);
 586
 587         sta->disassoc_reason = reason;
 588         sta->flags |= WLAN_STA_PENDING_DISASSOC_CB;
 589         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 590         eloop_register_timeout(hapd->iface->drv_flags &
 591                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 592                                ap_sta_disassoc_cb_timeout, hapd, sta);
 593 }
 594
 595
 596 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 597 {
 598         struct hostapd_data *hapd = eloop_ctx;
 599         struct sta_info *sta = timeout_ctx;
 600
 601         ap_sta_remove(hapd, sta);
 602         mlme_deauthenticate_indication(hapd, sta, sta->deauth_reason);
 603 }
 604
 605
 606 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 607                            u16 reason)
 608 {
 609         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 610                    hapd->conf->iface, MAC2STR(sta->addr));
 611         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 612         ap_sta_set_authorized(hapd, sta, 0);
 613         sta->timeout_next = STA_REMOVE;
 614         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 615                    "for " MACSTR " (%d seconds - "
 616                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
 617                    __func__, MAC2STR(sta->addr),
 618                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
 619         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 620         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 621                                ap_handle_timer, hapd, sta);
 622         accounting_sta_stop(hapd, sta);
 623         ieee802_1x_free_station(sta);
 624
 625         sta->deauth_reason = reason;
 626         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 627         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 628         eloop_register_timeout(hapd->iface->drv_flags &
 629                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 630                                ap_sta_deauth_cb_timeout, hapd, sta);
 631 }
 632
 633
 634 #ifdef CONFIG_WPS
 635 int ap_sta_wps_cancel(struct hostapd_data *hapd,
 636                       struct sta_info *sta, void *ctx)
 637 {
 638         if (sta && (sta->flags & WLAN_STA_WPS)) {
 639                 ap_sta_deauthenticate(hapd, sta,
 640                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 641                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 642                            __func__, MAC2STR(sta->addr));
 643                 return 1;
 644         }
 645
 646         return 0;
 647 }
 648 #endif /* CONFIG_WPS */
 649
 650
 651 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 652                      int old_vlanid)
 653 {
 654 #ifndef CONFIG_NO_VLAN
 655         const char *iface;
 656         struct hostapd_vlan *vlan = NULL;
 657         int ret;
 658
 659         /*
 660          * Do not proceed furthur if the vlan id remains same. We do not want
 661          * duplicate dynamic vlan entries.
 662          */
 663         if (sta->vlan_id == old_vlanid)
 664                 return 0;
 665
 666         /*
 667          * During 1x reauth, if the vlan id changes, then remove the old id and
 668          * proceed furthur to add the new one.
 669          */
 670         if (old_vlanid > 0)
 671                 vlan_remove_dynamic(hapd, old_vlanid);
 672
 673         iface = hapd->conf->iface;
 674         if (sta->ssid->vlan[0])
 675                 iface = sta->ssid->vlan;
 676
 677         if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
 678                 sta->vlan_id = 0;
 679         else if (sta->vlan_id > 0) {
 680                 vlan = hapd->conf->vlan;
 681                 while (vlan) {
 682                         if (vlan->vlan_id == sta->vlan_id ||
 683                             vlan->vlan_id == VLAN_ID_WILDCARD) {
 684                                 iface = vlan->ifname;
 685                                 break;
 686                         }
 687                         vlan = vlan->next;
 688                 }
 689         }
 690
 691         if (sta->vlan_id > 0 && vlan == NULL) {
 692                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 693                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
 694                                "binding station to (vlan_id=%d)",
 695                                sta->vlan_id);
 696                 return -1;
 697         } else if (sta->vlan_id > 0 && vlan->vlan_id == VLAN_ID_WILDCARD) {
 698                 vlan = vlan_add_dynamic(hapd, vlan, sta->vlan_id);
 699                 if (vlan == NULL) {
 700                         hostapd_logger(hapd, sta->addr,
 701                                        HOSTAPD_MODULE_IEEE80211,
 702                                        HOSTAPD_LEVEL_DEBUG, "could not add "
 703                                        "dynamic VLAN interface for vlan_id=%d",
 704                                        sta->vlan_id);
 705                         return -1;
 706                 }
 707
 708                 iface = vlan->ifname;
 709                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 710                         hostapd_logger(hapd, sta->addr,
 711                                        HOSTAPD_MODULE_IEEE80211,
 712                                        HOSTAPD_LEVEL_DEBUG, "could not "
 713                                        "configure encryption for dynamic VLAN "
 714                                        "interface for vlan_id=%d",
 715                                        sta->vlan_id);
 716                 }
 717
 718                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 719                                HOSTAPD_LEVEL_DEBUG, "added new dynamic VLAN "
 720                                "interface '%s'", iface);
 721         } else if (vlan && vlan->vlan_id == sta->vlan_id) {
 722                 if (sta->vlan_id > 0) {
 723                         vlan->dynamic_vlan++;
 724                         hostapd_logger(hapd, sta->addr,
 725                                        HOSTAPD_MODULE_IEEE80211,
 726                                        HOSTAPD_LEVEL_DEBUG, "updated existing "
 727                                        "dynamic VLAN interface '%s'", iface);
 728                 }
 729
 730                 /*
 731                  * Update encryption configuration for statically generated
 732                  * VLAN interface. This is only used for static WEP
 733                  * configuration for the case where hostapd did not yet know
 734                  * which keys are to be used when the interface was added.
 735                  */
 736                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 737                         hostapd_logger(hapd, sta->addr,
 738                                        HOSTAPD_MODULE_IEEE80211,
 739                                        HOSTAPD_LEVEL_DEBUG, "could not "
 740                                        "configure encryption for VLAN "
 741                                        "interface for vlan_id=%d",
 742                                        sta->vlan_id);
 743                 }
 744         }
 745
 746         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 747                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
 748                        "'%s'", iface);
 749
 750         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
 751                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
 752
 753         ret = hostapd_drv_set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
 754         if (ret < 0) {
 755                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 756                                HOSTAPD_LEVEL_DEBUG, "could not bind the STA "
 757                                "entry to vlan_id=%d", sta->vlan_id);
 758         }
 759         return ret;
 760 #else /* CONFIG_NO_VLAN */
 761         return 0;
 762 #endif /* CONFIG_NO_VLAN */
 763 }
 764
 765
 766 #ifdef CONFIG_IEEE80211W
 767
 768 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 769 {
 770         u32 tu;
 771         struct os_time now, passed;
 772         os_get_time(&now);
 773         os_time_sub(&now, &sta->sa_query_start, &passed);
 774         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 775         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
 776                 hostapd_logger(hapd, sta->addr,
 777                                HOSTAPD_MODULE_IEEE80211,
 778                                HOSTAPD_LEVEL_DEBUG,
 779                                "association SA Query timed out");
 780                 sta->sa_query_timed_out = 1;
 781                 os_free(sta->sa_query_trans_id);
 782                 sta->sa_query_trans_id = NULL;
 783                 sta->sa_query_count = 0;
 784                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 785                 return 1;
 786         }
 787
 788         return 0;
 789 }
 790
 791
 792 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
 793 {
 794         struct hostapd_data *hapd = eloop_ctx;
 795         struct sta_info *sta = timeout_ctx;
 796         unsigned int timeout, sec, usec;
 797         u8 *trans_id, *nbuf;
 798
 799         if (sta->sa_query_count > 0 &&
 800             ap_check_sa_query_timeout(hapd, sta))
 801                 return;
 802
 803         nbuf = os_realloc_array(sta->sa_query_trans_id,
 804                                 sta->sa_query_count + 1,
 805                                 WLAN_SA_QUERY_TR_ID_LEN);
 806         if (nbuf == NULL)
 807                 return;
 808         if (sta->sa_query_count == 0) {
 809                 /* Starting a new SA Query procedure */
 810                 os_get_time(&sta->sa_query_start);
 811         }
 812         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
 813         sta->sa_query_trans_id = nbuf;
 814         sta->sa_query_count++;
 815
 816         os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 817
 818         timeout = hapd->conf->assoc_sa_query_retry_timeout;
 819         sec = ((timeout / 1000) * 1024) / 1000;
 820         usec = (timeout % 1000) * 1024;
 821         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
 822
 823         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 824                        HOSTAPD_LEVEL_DEBUG,
 825                        "association SA Query attempt %d", sta->sa_query_count);
 826
 827         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
 828 }
 829
 830
 831 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 832 {
 833         ap_sa_query_timer(hapd, sta);
 834 }
 835
 836
 837 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 838 {
 839         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 840         os_free(sta->sa_query_trans_id);
 841         sta->sa_query_trans_id = NULL;
 842         sta->sa_query_count = 0;
 843 }
 844
 845 #endif /* CONFIG_IEEE80211W */
 846
 847
 848 void ap_sta_set_authorized(struct hostapd_data *hapd, struct sta_info *sta,
 849                            int authorized)
 850 {
 851         const u8 *dev_addr = NULL;
 852 #ifdef CONFIG_P2P
 853         u8 addr[ETH_ALEN];
 854 #endif /* CONFIG_P2P */
 855
 856         if (!!authorized == !!(sta->flags & WLAN_STA_AUTHORIZED))
 857                 return;
 858
 859 #ifdef CONFIG_P2P
 860         if (hapd->p2p_group == NULL) {
 861                 if (sta->p2p_ie != NULL &&
 862                     p2p_parse_dev_addr_in_p2p_ie(sta->p2p_ie, addr) == 0)
 863                         dev_addr = addr;
 864         } else
 865                 dev_addr = p2p_group_get_dev_addr(hapd->p2p_group, sta->addr);
 866 #endif /* CONFIG_P2P */
 867
 868         if (authorized) {
 869                 if (dev_addr)
 870                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 871                                 MACSTR " p2p_dev_addr=" MACSTR,
 872                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 873                 else
 874                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED
 875                                 MACSTR, MAC2STR(sta->addr));
 876                 if (hapd->msg_ctx_parent &&
 877                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 878                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 879                                 AP_STA_CONNECTED MACSTR " p2p_dev_addr="
 880                                 MACSTR,
 881                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 882                 else if (hapd->msg_ctx_parent &&
 883                          hapd->msg_ctx_parent != hapd->msg_ctx)
 884                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 885                                 AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
 886
 887                 sta->flags |= WLAN_STA_AUTHORIZED;
 888         } else {
 889                 if (dev_addr)
 890                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 891                                 MACSTR " p2p_dev_addr=" MACSTR,
 892                                 MAC2STR(sta->addr), MAC2STR(dev_addr));
 893                 else
 894                         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED
 895                                 MACSTR, MAC2STR(sta->addr));
 896                 if (hapd->msg_ctx_parent &&
 897                     hapd->msg_ctx_parent != hapd->msg_ctx && dev_addr)
 898                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 899                                 AP_STA_DISCONNECTED MACSTR " p2p_dev_addr="
 900                                 MACSTR, MAC2STR(sta->addr), MAC2STR(dev_addr));
 901                 else if (hapd->msg_ctx_parent &&
 902                          hapd->msg_ctx_parent != hapd->msg_ctx)
 903                         wpa_msg(hapd->msg_ctx_parent, MSG_INFO,
 904                                 AP_STA_DISCONNECTED MACSTR,
 905                                 MAC2STR(sta->addr));
 906                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 907         }
 908
 909         if (hapd->sta_authorized_cb)
 910                 hapd->sta_authorized_cb(hapd->sta_authorized_cb_ctx,
 911                                         sta->addr, authorized, dev_addr);
 912 }
 913
 914
 915 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
 916                        const u8 *addr, u16 reason)
 917 {
 918
 919         if (sta == NULL && addr)
 920                 sta = ap_get_sta(hapd, addr);
 921
 922         if (addr)
 923                 hostapd_drv_sta_deauth(hapd, addr, reason);
 924
 925         if (sta == NULL)
 926                 return;
 927         ap_sta_set_authorized(hapd, sta, 0);
 928         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
 929         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 930         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 931         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 932                    "for " MACSTR " (%d seconds - "
 933                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
 934                    __func__, MAC2STR(sta->addr),
 935                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
 936         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 937         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 938                                ap_handle_timer, hapd, sta);
 939         sta->timeout_next = STA_REMOVE;
 940
 941         sta->deauth_reason = reason;
 942         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 943         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 944         eloop_register_timeout(hapd->iface->drv_flags &
 945                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 946                                ap_sta_deauth_cb_timeout, hapd, sta);
 947 }
 948
 949
 950 void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta)
 951 {
 952         if (!(sta->flags & WLAN_STA_PENDING_DEAUTH_CB)) {
 953                 wpa_printf(MSG_DEBUG, "Ignore deauth cb for test frame");
 954                 return;
 955         }
 956         sta->flags &= ~WLAN_STA_PENDING_DEAUTH_CB;
 957         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 958         ap_sta_deauth_cb_timeout(hapd, sta);
 959 }
 960
 961
 962 void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta)
 963 {
 964         if (!(sta->flags & WLAN_STA_PENDING_DISASSOC_CB)) {
 965                 wpa_printf(MSG_DEBUG, "Ignore disassoc cb for test frame");
 966                 return;
 967         }
 968         sta->flags &= ~WLAN_STA_PENDING_DISASSOC_CB;
 969         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 970         ap_sta_disassoc_cb_timeout(hapd, sta);
 971 }