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